+++ /dev/null
-
- ChangeLog file for zlib
-
-Changes in 1.2.3 (18 July 2005)
-- Apply security vulnerability fixes to contrib/infback9 as well
-- Clean up some text files (carriage returns, trailing space)
-- Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant]
-
-Changes in 1.2.2.4 (11 July 2005)
-- Add inflatePrime() function for starting inflation at bit boundary
-- Avoid some Visual C warnings in deflate.c
-- Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit
- compile
-- Fix some spelling errors in comments [Betts]
-- Correct inflateInit2() error return documentation in zlib.h
-- Added zran.c example of compressed data random access to examples
- directory, shows use of inflatePrime()
-- Fix cast for assignments to strm->state in inflate.c and infback.c
-- Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer]
-- Move declarations of gf2 functions to right place in crc32.c [Oberhumer]
-- Add cast in trees.c t avoid a warning [Oberhumer]
-- Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer]
-- Update make_vms.com [Zinser]
-- Initialize state->write in inflateReset() since copied in inflate_fast()
-- Be more strict on incomplete code sets in inflate_table() and increase
- ENOUGH and MAXD -- this repairs a possible security vulnerability for
- invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for
- discovering the vulnerability and providing test cases.
-- Add ia64 support to configure for HP-UX [Smith]
-- Add error return to gzread() for format or i/o error [Levin]
-- Use malloc.h for OS/2 [Necasek]
-
-Changes in 1.2.2.3 (27 May 2005)
-- Replace 1U constants in inflate.c and inftrees.c for 64-bit compile
-- Typecast fread() return values in gzio.c [Vollant]
-- Remove trailing space in minigzip.c outmode (VC++ can't deal with it)
-- Fix crc check bug in gzread() after gzungetc() [Heiner]
-- Add the deflateTune() function to adjust internal compression parameters
-- Add a fast gzip decompressor, gun.c, to examples (use of inflateBack)
-- Remove an incorrect assertion in examples/zpipe.c
-- Add C++ wrapper in infback9.h [Donais]
-- Fix bug in inflateCopy() when decoding fixed codes
-- Note in zlib.h how much deflateSetDictionary() actually uses
-- Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used)
-- Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer]
-- Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer]
-- Add gzdirect() function to indicate transparent reads
-- Update contrib/minizip [Vollant]
-- Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer]
-- Add casts in crc32.c to avoid warnings [Oberhumer]
-- Add contrib/masmx64 [Vollant]
-- Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant]
-
-Changes in 1.2.2.2 (30 December 2004)
-- Replace structure assignments in deflate.c and inflate.c with zmemcpy to
- avoid implicit memcpy calls (portability for no-library compilation)
-- Increase sprintf() buffer size in gzdopen() to allow for large numbers
-- Add INFLATE_STRICT to check distances against zlib header
-- Improve WinCE errno handling and comments [Chang]
-- Remove comment about no gzip header processing in FAQ
-- Add Z_FIXED strategy option to deflateInit2() to force fixed trees
-- Add updated make_vms.com [Coghlan], update README
-- Create a new "examples" directory, move gzappend.c there, add zpipe.c,
- fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html.
-- Add FAQ entry and comments in deflate.c on uninitialized memory access
-- Add Solaris 9 make options in configure [Gilbert]
-- Allow strerror() usage in gzio.c for STDC
-- Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer]
-- Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant]
-- Use z_off_t for adler32_combine() and crc32_combine() lengths
-- Make adler32() much faster for small len
-- Use OS_CODE in deflate() default gzip header
-
-Changes in 1.2.2.1 (31 October 2004)
-- Allow inflateSetDictionary() call for raw inflate
-- Fix inflate header crc check bug for file names and comments
-- Add deflateSetHeader() and gz_header structure for custom gzip headers
-- Add inflateGetheader() to retrieve gzip headers
-- Add crc32_combine() and adler32_combine() functions
-- Add alloc_func, free_func, in_func, out_func to Z_PREFIX list
-- Use zstreamp consistently in zlib.h (inflate_back functions)
-- Remove GUNZIP condition from definition of inflate_mode in inflate.h
- and in contrib/inflate86/inffast.S [Truta, Anderson]
-- Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]
-- Update projects/README.projects and projects/visualc6 [Truta]
-- Update win32/DLL_FAQ.txt [Truta]
-- Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]
-- Deprecate Z_ASCII; use Z_TEXT instead [Truta]
-- Use a new algorithm for setting strm->data_type in trees.c [Truta]
-- Do not define an exit() prototype in zutil.c unless DEBUG defined
-- Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]
-- Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()
-- Fix Darwin build version identification [Peterson]
-
-Changes in 1.2.2 (3 October 2004)
-- Update zlib.h comments on gzip in-memory processing
-- Set adler to 1 in inflateReset() to support Java test suite [Walles]
-- Add contrib/dotzlib [Ravn]
-- Update win32/DLL_FAQ.txt [Truta]
-- Update contrib/minizip [Vollant]
-- Move contrib/visual-basic.txt to old/ [Truta]
-- Fix assembler builds in projects/visualc6/ [Truta]
-
-Changes in 1.2.1.2 (9 September 2004)
-- Update INDEX file
-- Fix trees.c to update strm->data_type (no one ever noticed!)
-- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]
-- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)
-- Add limited multitasking protection to DYNAMIC_CRC_TABLE
-- Add NO_vsnprintf for VMS in zutil.h [Mozilla]
-- Don't declare strerror() under VMS [Mozilla]
-- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize
-- Update contrib/ada [Anisimkov]
-- Update contrib/minizip [Vollant]
-- Fix configure to not hardcode directories for Darwin [Peterson]
-- Fix gzio.c to not return error on empty files [Brown]
-- Fix indentation; update version in contrib/delphi/ZLib.pas and
- contrib/pascal/zlibpas.pas [Truta]
-- Update mkasm.bat in contrib/masmx86 [Truta]
-- Update contrib/untgz [Truta]
-- Add projects/README.projects [Truta]
-- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]
-- Update win32/DLL_FAQ.txt [Truta]
-- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]
-- Remove an unnecessary assignment to curr in inftrees.c [Truta]
-- Add OS/2 to exe builds in configure [Poltorak]
-- Remove err dummy parameter in zlib.h [Kientzle]
-
-Changes in 1.2.1.1 (9 January 2004)
-- Update email address in README
-- Several FAQ updates
-- Fix a big fat bug in inftrees.c that prevented decoding valid
- dynamic blocks with only literals and no distance codes --
- Thanks to "Hot Emu" for the bug report and sample file
-- Add a note to puff.c on no distance codes case.
-
-Changes in 1.2.1 (17 November 2003)
-- Remove a tab in contrib/gzappend/gzappend.c
-- Update some interfaces in contrib for new zlib functions
-- Update zlib version number in some contrib entries
-- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
-- Support shared libraries on Hurd and KFreeBSD [Brown]
-- Fix error in NO_DIVIDE option of adler32.c
-
-Changes in 1.2.0.8 (4 November 2003)
-- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
-- Add experimental NO_DIVIDE #define in adler32.c
- - Possibly faster on some processors (let me know if it is)
-- Correct Z_BLOCK to not return on first inflate call if no wrap
-- Fix strm->data_type on inflate() return to correctly indicate EOB
-- Add deflatePrime() function for appending in the middle of a byte
-- Add contrib/gzappend for an example of appending to a stream
-- Update win32/DLL_FAQ.txt [Truta]
-- Delete Turbo C comment in README [Truta]
-- Improve some indentation in zconf.h [Truta]
-- Fix infinite loop on bad input in configure script [Church]
-- Fix gzeof() for concatenated gzip files [Johnson]
-- Add example to contrib/visual-basic.txt [Michael B.]
-- Add -p to mkdir's in Makefile.in [vda]
-- Fix configure to properly detect presence or lack of printf functions
-- Add AS400 support [Monnerat]
-- Add a little Cygwin support [Wilson]
-
-Changes in 1.2.0.7 (21 September 2003)
-- Correct some debug formats in contrib/infback9
-- Cast a type in a debug statement in trees.c
-- Change search and replace delimiter in configure from % to # [Beebe]
-- Update contrib/untgz to 0.2 with various fixes [Truta]
-- Add build support for Amiga [Nikl]
-- Remove some directories in old that have been updated to 1.2
-- Add dylib building for Mac OS X in configure and Makefile.in
-- Remove old distribution stuff from Makefile
-- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
-- Update links in README
-
-Changes in 1.2.0.6 (13 September 2003)
-- Minor FAQ updates
-- Update contrib/minizip to 1.00 [Vollant]
-- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
-- Update POSTINC comment for 68060 [Nikl]
-- Add contrib/infback9 with deflate64 decoding (unsupported)
-- For MVS define NO_vsnprintf and undefine FAR [van Burik]
-- Add pragma for fdopen on MVS [van Burik]
-
-Changes in 1.2.0.5 (8 September 2003)
-- Add OF to inflateBackEnd() declaration in zlib.h
-- Remember start when using gzdopen in the middle of a file
-- Use internal off_t counters in gz* functions to properly handle seeks
-- Perform more rigorous check for distance-too-far in inffast.c
-- Add Z_BLOCK flush option to return from inflate at block boundary
-- Set strm->data_type on return from inflate
- - Indicate bits unused, if at block boundary, and if in last block
-- Replace size_t with ptrdiff_t in crc32.c, and check for correct size
-- Add condition so old NO_DEFLATE define still works for compatibility
-- FAQ update regarding the Windows DLL [Truta]
-- INDEX update: add qnx entry, remove aix entry [Truta]
-- Install zlib.3 into mandir [Wilson]
-- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
-- Adapt the zlib interface to the new DLL convention guidelines [Truta]
-- Introduce ZLIB_WINAPI macro to allow the export of functions using
- the WINAPI calling convention, for Visual Basic [Vollant, Truta]
-- Update msdos and win32 scripts and makefiles [Truta]
-- Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
-- Add contrib/ada [Anisimkov]
-- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
-- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
-- Add contrib/masm686 [Truta]
-- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
- [Truta, Vollant]
-- Update contrib/delphi; rename to contrib/pascal; add example [Truta]
-- Remove contrib/delphi2; add a new contrib/delphi [Truta]
-- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
- and fix some method prototypes [Truta]
-- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
- [Truta]
-- Avoid the use of backslash (\) in contrib/minizip [Vollant]
-- Fix file time handling in contrib/untgz; update makefiles [Truta]
-- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
- [Vollant]
-- Remove contrib/vstudio/vc15_16 [Vollant]
-- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
-- Update README.contrib [Truta]
-- Invert the assignment order of match_head and s->prev[...] in
- INSERT_STRING [Truta]
-- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
- [Truta]
-- Compare function pointers with 0, not with NULL or Z_NULL [Truta]
-- Fix prototype of syncsearch in inflate.c [Truta]
-- Introduce ASMINF macro to be enabled when using an ASM implementation
- of inflate_fast [Truta]
-- Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
-- Modify test_gzio in example.c to take a single file name as a
- parameter [Truta]
-- Exit the example.c program if gzopen fails [Truta]
-- Add type casts around strlen in example.c [Truta]
-- Remove casting to sizeof in minigzip.c; give a proper type
- to the variable compared with SUFFIX_LEN [Truta]
-- Update definitions of STDC and STDC99 in zconf.h [Truta]
-- Synchronize zconf.h with the new Windows DLL interface [Truta]
-- Use SYS16BIT instead of __32BIT__ to distinguish between
- 16- and 32-bit platforms [Truta]
-- Use far memory allocators in small 16-bit memory models for
- Turbo C [Truta]
-- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
- zlibCompileFlags [Truta]
-- Cygwin has vsnprintf [Wilson]
-- In Windows16, OS_CODE is 0, as in MSDOS [Truta]
-- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]
-
-Changes in 1.2.0.4 (10 August 2003)
-- Minor FAQ updates
-- Be more strict when checking inflateInit2's windowBits parameter
-- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
-- Add gzip wrapper option to deflateInit2 using windowBits
-- Add updated QNX rule in configure and qnx directory [Bonnefoy]
-- Make inflate distance-too-far checks more rigorous
-- Clean up FAR usage in inflate
-- Add casting to sizeof() in gzio.c and minigzip.c
-
-Changes in 1.2.0.3 (19 July 2003)
-- Fix silly error in gzungetc() implementation [Vollant]
-- Update contrib/minizip and contrib/vstudio [Vollant]
-- Fix printf format in example.c
-- Correct cdecl support in zconf.in.h [Anisimkov]
-- Minor FAQ updates
-
-Changes in 1.2.0.2 (13 July 2003)
-- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
-- Attempt to avoid warnings in crc32.c for pointer-int conversion
-- Add AIX to configure, remove aix directory [Bakker]
-- Add some casts to minigzip.c
-- Improve checking after insecure sprintf() or vsprintf() calls
-- Remove #elif's from crc32.c
-- Change leave label to inf_leave in inflate.c and infback.c to avoid
- library conflicts
-- Remove inflate gzip decoding by default--only enable gzip decoding by
- special request for stricter backward compatibility
-- Add zlibCompileFlags() function to return compilation information
-- More typecasting in deflate.c to avoid warnings
-- Remove leading underscore from _Capital #defines [Truta]
-- Fix configure to link shared library when testing
-- Add some Windows CE target adjustments [Mai]
-- Remove #define ZLIB_DLL in zconf.h [Vollant]
-- Add zlib.3 [Rodgers]
-- Update RFC URL in deflate.c and algorithm.txt [Mai]
-- Add zlib_dll_FAQ.txt to contrib [Truta]
-- Add UL to some constants [Truta]
-- Update minizip and vstudio [Vollant]
-- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
-- Expand use of NO_DUMMY_DECL to avoid all dummy structures
-- Added iostream3 to contrib [Schwardt]
-- Replace rewind() with fseek() for WinCE [Truta]
-- Improve setting of zlib format compression level flags
- - Report 0 for huffman and rle strategies and for level == 0 or 1
- - Report 2 only for level == 6
-- Only deal with 64K limit when necessary at compile time [Truta]
-- Allow TOO_FAR check to be turned off at compile time [Truta]
-- Add gzclearerr() function [Souza]
-- Add gzungetc() function
-
-Changes in 1.2.0.1 (17 March 2003)
-- Add Z_RLE strategy for run-length encoding [Truta]
- - When Z_RLE requested, restrict matches to distance one
- - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE
-- Correct FASTEST compilation to allow level == 0
-- Clean up what gets compiled for FASTEST
-- Incorporate changes to zconf.in.h [Vollant]
- - Refine detection of Turbo C need for dummy returns
- - Refine ZLIB_DLL compilation
- - Include additional header file on VMS for off_t typedef
-- Try to use _vsnprintf where it supplants vsprintf [Vollant]
-- Add some casts in inffast.c
-- Enchance comments in zlib.h on what happens if gzprintf() tries to
- write more than 4095 bytes before compression
-- Remove unused state from inflateBackEnd()
-- Remove exit(0) from minigzip.c, example.c
-- Get rid of all those darn tabs
-- Add "check" target to Makefile.in that does the same thing as "test"
-- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in
-- Update contrib/inflate86 [Anderson]
-- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]
-- Add msdos and win32 directories with makefiles [Truta]
-- More additions and improvements to the FAQ
-
-Changes in 1.2.0 (9 March 2003)
-- New and improved inflate code
- - About 20% faster
- - Does not allocate 32K window unless and until needed
- - Automatically detects and decompresses gzip streams
- - Raw inflate no longer needs an extra dummy byte at end
- - Added inflateBack functions using a callback interface--even faster
- than inflate, useful for file utilities (gzip, zip)
- - Added inflateCopy() function to record state for random access on
- externally generated deflate streams (e.g. in gzip files)
- - More readable code (I hope)
-- New and improved crc32()
- - About 50% faster, thanks to suggestions from Rodney Brown
-- Add deflateBound() and compressBound() functions
-- Fix memory leak in deflateInit2()
-- Permit setting dictionary for raw deflate (for parallel deflate)
-- Fix const declaration for gzwrite()
-- Check for some malloc() failures in gzio.c
-- Fix bug in gzopen() on single-byte file 0x1f
-- Fix bug in gzread() on concatenated file with 0x1f at end of buffer
- and next buffer doesn't start with 0x8b
-- Fix uncompress() to return Z_DATA_ERROR on truncated input
-- Free memory at end of example.c
-- Remove MAX #define in trees.c (conflicted with some libraries)
-- Fix static const's in deflate.c, gzio.c, and zutil.[ch]
-- Declare malloc() and free() in gzio.c if STDC not defined
-- Use malloc() instead of calloc() in zutil.c if int big enough
-- Define STDC for AIX
-- Add aix/ with approach for compiling shared library on AIX
-- Add HP-UX support for shared libraries in configure
-- Add OpenUNIX support for shared libraries in configure
-- Use $cc instead of gcc to build shared library
-- Make prefix directory if needed when installing
-- Correct Macintosh avoidance of typedef Byte in zconf.h
-- Correct Turbo C memory allocation when under Linux
-- Use libz.a instead of -lz in Makefile (assure use of compiled library)
-- Update configure to check for snprintf or vsnprintf functions and their
- return value, warn during make if using an insecure function
-- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that
- is lost when library is used--resolution is to build new zconf.h
-- Documentation improvements (in zlib.h):
- - Document raw deflate and inflate
- - Update RFCs URL
- - Point out that zlib and gzip formats are different
- - Note that Z_BUF_ERROR is not fatal
- - Document string limit for gzprintf() and possible buffer overflow
- - Note requirement on avail_out when flushing
- - Note permitted values of flush parameter of inflate()
-- Add some FAQs (and even answers) to the FAQ
-- Add contrib/inflate86/ for x86 faster inflate
-- Add contrib/blast/ for PKWare Data Compression Library decompression
-- Add contrib/puff/ simple inflate for deflate format description
-
-Changes in 1.1.4 (11 March 2002)
-- ZFREE was repeated on same allocation on some error conditions.
- This creates a security problem described in
- http://www.zlib.org/advisory-2002-03-11.txt
-- Returned incorrect error (Z_MEM_ERROR) on some invalid data
-- Avoid accesses before window for invalid distances with inflate window
- less than 32K.
-- force windowBits > 8 to avoid a bug in the encoder for a window size
- of 256 bytes. (A complete fix will be available in 1.1.5).
-
-Changes in 1.1.3 (9 July 1998)
-- fix "an inflate input buffer bug that shows up on rare but persistent
- occasions" (Mark)
-- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
-- fix gzseek(..., SEEK_SET) in write mode
-- fix crc check after a gzeek (Frank Faubert)
-- fix miniunzip when the last entry in a zip file is itself a zip file
- (J Lillge)
-- add contrib/asm586 and contrib/asm686 (Brian Raiter)
- See http://www.muppetlabs.com/~breadbox/software/assembly.html
-- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
-- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
-- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
-- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
-- added a FAQ file
-
-- Support gzdopen on Mac with Metrowerks (Jason Linhart)
-- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
-- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
-- avoid some warnings with Borland C (Tom Tanner)
-- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
-- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant)
-- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
-- use libdir and includedir in Makefile.in (Tim Mooney)
-- support shared libraries on OSF1 V4 (Tim Mooney)
-- remove so_locations in "make clean" (Tim Mooney)
-- fix maketree.c compilation error (Glenn, Mark)
-- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
-- new Makefile.riscos (Rich Walker)
-- initialize static descriptors in trees.c for embedded targets (Nick Smith)
-- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
-- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
-- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
-- fix maketree.c to allow clean compilation of inffixed.h (Mark)
-- fix parameter check in deflateCopy (Gunther Nikl)
-- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
-- Many portability patches by Christian Spieler:
- . zutil.c, zutil.h: added "const" for zmem*
- . Make_vms.com: fixed some typos
- . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
- . msdos/Makefile.msc: remove "default rtl link library" info from obj files
- . msdos/Makefile.*: use model-dependent name for the built zlib library
- . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
- new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
-- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
-- replace __far with _far for better portability (Christian Spieler, Tom Lane)
-- fix test for errno.h in configure (Tim Newsham)
-
-Changes in 1.1.2 (19 March 98)
-- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
- See http://www.winimage.com/zLibDll/unzip.html
-- preinitialize the inflate tables for fixed codes, to make the code
- completely thread safe (Mark)
-- some simplifications and slight speed-up to the inflate code (Mark)
-- fix gzeof on non-compressed files (Allan Schrum)
-- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
-- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
-- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
-- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
-- do not wrap extern "C" around system includes (Tom Lane)
-- mention zlib binding for TCL in README (Andreas Kupries)
-- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
-- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
-- allow "configure --prefix $HOME" (Tim Mooney)
-- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)
-- move Makefile.sas to amiga/Makefile.sas
-
-Changes in 1.1.1 (27 Feb 98)
-- fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson)
-- remove block truncation heuristic which had very marginal effect for zlib
- (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the
- compression ratio on some files. This also allows inlining _tr_tally for
- matches in deflate_slow.
-- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)
-
-Changes in 1.1.0 (24 Feb 98)
-- do not return STREAM_END prematurely in inflate (John Bowler)
-- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
-- compile with -DFASTEST to get compression code optimized for speed only
-- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
-- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
- on Sun but significant on HP)
-
-- add a pointer to experimental unzip library in README (Gilles Vollant)
-- initialize variable gcc in configure (Chris Herborth)
-
-Changes in 1.0.9 (17 Feb 1998)
-- added gzputs and gzgets functions
-- do not clear eof flag in gzseek (Mark Diekhans)
-- fix gzseek for files in transparent mode (Mark Diekhans)
-- do not assume that vsprintf returns the number of bytes written (Jens Krinke)
-- replace EXPORT with ZEXPORT to avoid conflict with other programs
-- added compress2 in zconf.h, zlib.def, zlib.dnt
-- new asm code from Gilles Vollant in contrib/asm386
-- simplify the inflate code (Mark):
- . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
- . ZALLOC the length list in inflate_trees_fixed() instead of using stack
- . ZALLOC the value area for huft_build() instead of using stack
- . Simplify Z_FINISH check in inflate()
-
-- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
-- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
-- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
- the declaration of FAR (Gilles VOllant)
-- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
-- read_buf buf parameter of type Bytef* instead of charf*
-- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
-- do not redeclare unlink in minigzip.c for WIN32 (John Bowler)
-- fix check for presence of directories in "make install" (Ian Willis)
-
-Changes in 1.0.8 (27 Jan 1998)
-- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
-- fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
-- added compress2() to allow setting the compression level
-- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
-- use constant arrays for the static trees in trees.c instead of computing
- them at run time (thanks to Ken Raeburn for this suggestion). To create
- trees.h, compile with GEN_TREES_H and run "make test".
-- check return code of example in "make test" and display result
-- pass minigzip command line options to file_compress
-- simplifying code of inflateSync to avoid gcc 2.8 bug
-
-- support CC="gcc -Wall" in configure -s (QingLong)
-- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)
-- fix test for shared library support to avoid compiler warnings
-- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)
-- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)
-- do not use fdopen for Metrowerks on Mac (Brad Pettit))
-- add checks for gzputc and gzputc in example.c
-- avoid warnings in gzio.c and deflate.c (Andreas Kleinert)
-- use const for the CRC table (Ken Raeburn)
-- fixed "make uninstall" for shared libraries
-- use Tracev instead of Trace in infblock.c
-- in example.c use correct compressed length for test_sync
-- suppress +vnocompatwarnings in configure for HPUX (not always supported)
-
-Changes in 1.0.7 (20 Jan 1998)
-- fix gzseek which was broken in write mode
-- return error for gzseek to negative absolute position
-- fix configure for Linux (Chun-Chung Chen)
-- increase stack space for MSC (Tim Wegner)
-- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
-- define EXPORTVA for gzprintf (Gilles Vollant)
-- added man page zlib.3 (Rick Rodgers)
-- for contrib/untgz, fix makedir() and improve Makefile
-
-- check gzseek in write mode in example.c
-- allocate extra buffer for seeks only if gzseek is actually called
-- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)
-- add inflateSyncPoint in zconf.h
-- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def
-
-Changes in 1.0.6 (19 Jan 1998)
-- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and
- gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)
-- Fix a deflate bug occurring only with compression level 0 (thanks to
- Andy Buckler for finding this one).
-- In minigzip, pass transparently also the first byte for .Z files.
-- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()
-- check Z_FINISH in inflate (thanks to Marc Schluper)
-- Implement deflateCopy (thanks to Adam Costello)
-- make static libraries by default in configure, add --shared option.
-- move MSDOS or Windows specific files to directory msdos
-- suppress the notion of partial flush to simplify the interface
- (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)
-- suppress history buffer provided by application to simplify the interface
- (this feature was not implemented anyway in 1.0.4)
-- next_in and avail_in must be initialized before calling inflateInit or
- inflateInit2
-- add EXPORT in all exported functions (for Windows DLL)
-- added Makefile.nt (thanks to Stephen Williams)
-- added the unsupported "contrib" directory:
- contrib/asm386/ by Gilles Vollant <info@winimage.com>
- 386 asm code replacing longest_match().
- contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
- A C++ I/O streams interface to the zlib gz* functions
- contrib/iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no>
- Another C++ I/O streams interface
- contrib/untgz/ by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
- A very simple tar.gz file extractor using zlib
- contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
- How to use compress(), uncompress() and the gz* functions from VB.
-- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression
- level) in minigzip (thanks to Tom Lane)
-
-- use const for rommable constants in deflate
-- added test for gzseek and gztell in example.c
-- add undocumented function inflateSyncPoint() (hack for Paul Mackerras)
-- add undocumented function zError to convert error code to string
- (for Tim Smithers)
-- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code.
-- Use default memcpy for Symantec MSDOS compiler.
-- Add EXPORT keyword for check_func (needed for Windows DLL)
-- add current directory to LD_LIBRARY_PATH for "make test"
-- create also a link for libz.so.1
-- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)
-- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)
-- added -soname for Linux in configure (Chun-Chung Chen,
-- assign numbers to the exported functions in zlib.def (for Windows DLL)
-- add advice in zlib.h for best usage of deflateSetDictionary
-- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)
-- allow compilation with ANSI keywords only enabled for TurboC in large model
-- avoid "versionString"[0] (Borland bug)
-- add NEED_DUMMY_RETURN for Borland
-- use variable z_verbose for tracing in debug mode (L. Peter Deutsch).
-- allow compilation with CC
-- defined STDC for OS/2 (David Charlap)
-- limit external names to 8 chars for MVS (Thomas Lund)
-- in minigzip.c, use static buffers only for 16-bit systems
-- fix suffix check for "minigzip -d foo.gz"
-- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)
-- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)
-- added makelcc.bat for lcc-win32 (Tom St Denis)
-- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)
-- Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion.
-- check for unistd.h in configure (for off_t)
-- remove useless check parameter in inflate_blocks_free
-- avoid useless assignment of s->check to itself in inflate_blocks_new
-- do not flush twice in gzclose (thanks to Ken Raeburn)
-- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h
-- use NO_ERRNO_H instead of enumeration of operating systems with errno.h
-- work around buggy fclose on pipes for HP/UX
-- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)
-- fix configure if CC is already equal to gcc
-
-Changes in 1.0.5 (3 Jan 98)
-- Fix inflate to terminate gracefully when fed corrupted or invalid data
-- Use const for rommable constants in inflate
-- Eliminate memory leaks on error conditions in inflate
-- Removed some vestigial code in inflate
-- Update web address in README
-
-Changes in 1.0.4 (24 Jul 96)
-- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF
- bit, so the decompressor could decompress all the correct data but went
- on to attempt decompressing extra garbage data. This affected minigzip too.
-- zlibVersion and gzerror return const char* (needed for DLL)
-- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)
-- use z_error only for DEBUG (avoid problem with DLLs)
-
-Changes in 1.0.3 (2 Jul 96)
-- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS
- small and medium models; this makes the library incompatible with previous
- versions for these models. (No effect in large model or on other systems.)
-- return OK instead of BUF_ERROR if previous deflate call returned with
- avail_out as zero but there is nothing to do
-- added memcmp for non STDC compilers
-- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)
-- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)
-- better check for 16-bit mode MSC (avoids problem with Symantec)
-
-Changes in 1.0.2 (23 May 96)
-- added Windows DLL support
-- added a function zlibVersion (for the DLL support)
-- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)
-- Bytef is define's instead of typedef'd only for Borland C
-- avoid reading uninitialized memory in example.c
-- mention in README that the zlib format is now RFC1950
-- updated Makefile.dj2
-- added algorithm.doc
-
-Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
-- fix array overlay in deflate.c which sometimes caused bad compressed data
-- fix inflate bug with empty stored block
-- fix MSDOS medium model which was broken in 0.99
-- fix deflateParams() which could generated bad compressed data.
-- Bytef is define'd instead of typedef'ed (work around Borland bug)
-- added an INDEX file
-- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),
- Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)
-- speed up adler32 for modern machines without auto-increment
-- added -ansi for IRIX in configure
-- static_init_done in trees.c is an int
-- define unlink as delete for VMS
-- fix configure for QNX
-- add configure branch for SCO and HPUX
-- avoid many warnings (unused variables, dead assignments, etc...)
-- no fdopen for BeOS
-- fix the Watcom fix for 32 bit mode (define FAR as empty)
-- removed redefinition of Byte for MKWERKS
-- work around an MWKERKS bug (incorrect merge of all .h files)
-
-Changes in 0.99 (27 Jan 96)
-- allow preset dictionary shared between compressor and decompressor
-- allow compression level 0 (no compression)
-- add deflateParams in zlib.h: allow dynamic change of compression level
- and compression strategy.
-- test large buffers and deflateParams in example.c
-- add optional "configure" to build zlib as a shared library
-- suppress Makefile.qnx, use configure instead
-- fixed deflate for 64-bit systems (detected on Cray)
-- fixed inflate_blocks for 64-bit systems (detected on Alpha)
-- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)
-- always return Z_BUF_ERROR when deflate() has nothing to do
-- deflateInit and inflateInit are now macros to allow version checking
-- prefix all global functions and types with z_ with -DZ_PREFIX
-- make falloc completely reentrant (inftrees.c)
-- fixed very unlikely race condition in ct_static_init
-- free in reverse order of allocation to help memory manager
-- use zlib-1.0/* instead of zlib/* inside the tar.gz
-- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith
- -Wconversion -Wstrict-prototypes -Wmissing-prototypes"
-- allow gzread on concatenated .gz files
-- deflateEnd now returns Z_DATA_ERROR if it was premature
-- deflate is finally (?) fully deterministic (no matches beyond end of input)
-- Document Z_SYNC_FLUSH
-- add uninstall in Makefile
-- Check for __cpluplus in zlib.h
-- Better test in ct_align for partial flush
-- avoid harmless warnings for Borland C++
-- initialize hash_head in deflate.c
-- avoid warning on fdopen (gzio.c) for HP cc -Aa
-- include stdlib.h for STDC compilers
-- include errno.h for Cray
-- ignore error if ranlib doesn't exist
-- call ranlib twice for NeXTSTEP
-- use exec_prefix instead of prefix for libz.a
-- renamed ct_* as _tr_* to avoid conflict with applications
-- clear z->msg in inflateInit2 before any error return
-- initialize opaque in example.c, gzio.c, deflate.c and inflate.c
-- fixed typo in zconf.h (_GNUC__ => __GNUC__)
-- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)
-- fix typo in Make_vms.com (f$trnlnm -> f$getsyi)
-- in fcalloc, normalize pointer if size > 65520 bytes
-- don't use special fcalloc for 32 bit Borland C++
-- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc...
-- use Z_BINARY instead of BINARY
-- document that gzclose after gzdopen will close the file
-- allow "a" as mode in gzopen.
-- fix error checking in gzread
-- allow skipping .gz extra-field on pipes
-- added reference to Perl interface in README
-- put the crc table in FAR data (I dislike more and more the medium model :)
-- added get_crc_table
-- added a dimension to all arrays (Borland C can't count).
-- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast
-- guard against multiple inclusion of *.h (for precompiled header on Mac)
-- Watcom C pretends to be Microsoft C small model even in 32 bit mode.
-- don't use unsized arrays to avoid silly warnings by Visual C++:
- warning C4746: 'inflate_mask' : unsized array treated as '__far'
- (what's wrong with far data in far model?).
-- define enum out of inflate_blocks_state to allow compilation with C++
-
-Changes in 0.95 (16 Aug 95)
-- fix MSDOS small and medium model (now easier to adapt to any compiler)
-- inlined send_bits
-- fix the final (:-) bug for deflate with flush (output was correct but
- not completely flushed in rare occasions).
-- default window size is same for compression and decompression
- (it's now sufficient to set MAX_WBITS in zconf.h).
-- voidp -> voidpf and voidnp -> voidp (for consistency with other
- typedefs and because voidnp was not near in large model).
-
-Changes in 0.94 (13 Aug 95)
-- support MSDOS medium model
-- fix deflate with flush (could sometimes generate bad output)
-- fix deflateReset (zlib header was incorrectly suppressed)
-- added support for VMS
-- allow a compression level in gzopen()
-- gzflush now calls fflush
-- For deflate with flush, flush even if no more input is provided.
-- rename libgz.a as libz.a
-- avoid complex expression in infcodes.c triggering Turbo C bug
-- work around a problem with gcc on Alpha (in INSERT_STRING)
-- don't use inline functions (problem with some gcc versions)
-- allow renaming of Byte, uInt, etc... with #define.
-- avoid warning about (unused) pointer before start of array in deflate.c
-- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c
-- avoid reserved word 'new' in trees.c
-
-Changes in 0.93 (25 June 95)
-- temporarily disable inline functions
-- make deflate deterministic
-- give enough lookahead for PARTIAL_FLUSH
-- Set binary mode for stdin/stdout in minigzip.c for OS/2
-- don't even use signed char in inflate (not portable enough)
-- fix inflate memory leak for segmented architectures
-
-Changes in 0.92 (3 May 95)
-- don't assume that char is signed (problem on SGI)
-- Clear bit buffer when starting a stored block
-- no memcpy on Pyramid
-- suppressed inftest.c
-- optimized fill_window, put longest_match inline for gcc
-- optimized inflate on stored blocks.
-- untabify all sources to simplify patches
-
-Changes in 0.91 (2 May 95)
-- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
-- Document the memory requirements in zconf.h
-- added "make install"
-- fix sync search logic in inflateSync
-- deflate(Z_FULL_FLUSH) now works even if output buffer too short
-- after inflateSync, don't scare people with just "lo world"
-- added support for DJGPP
-
-Changes in 0.9 (1 May 95)
-- don't assume that zalloc clears the allocated memory (the TurboC bug
- was Mark's bug after all :)
-- let again gzread copy uncompressed data unchanged (was working in 0.71)
-- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
-- added a test of inflateSync in example.c
-- moved MAX_WBITS to zconf.h because users might want to change that.
-- document explicitly that zalloc(64K) on MSDOS must return a normalized
- pointer (zero offset)
-- added Makefiles for Microsoft C, Turbo C, Borland C++
-- faster crc32()
-
-Changes in 0.8 (29 April 95)
-- added fast inflate (inffast.c)
-- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this
- is incompatible with previous versions of zlib which returned Z_OK.
-- work around a TurboC compiler bug (bad code for b << 0, see infutil.h)
- (actually that was not a compiler bug, see 0.81 above)
-- gzread no longer reads one extra byte in certain cases
-- In gzio destroy(), don't reference a freed structure
-- avoid many warnings for MSDOS
-- avoid the ERROR symbol which is used by MS Windows
-
-Changes in 0.71 (14 April 95)
-- Fixed more MSDOS compilation problems :( There is still a bug with
- TurboC large model.
-
-Changes in 0.7 (14 April 95)
-- Added full inflate support.
-- Simplified the crc32() interface. The pre- and post-conditioning
- (one's complement) is now done inside crc32(). WARNING: this is
- incompatible with previous versions; see zlib.h for the new usage.
-
-Changes in 0.61 (12 April 95)
-- workaround for a bug in TurboC. example and minigzip now work on MSDOS.
-
-Changes in 0.6 (11 April 95)
-- added minigzip.c
-- added gzdopen to reopen a file descriptor as gzFile
-- added transparent reading of non-gziped files in gzread.
-- fixed bug in gzread (don't read crc as data)
-- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose).
-- don't allocate big arrays in the stack (for MSDOS)
-- fix some MSDOS compilation problems
-
-Changes in 0.5:
-- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but
- not yet Z_FULL_FLUSH.
-- support decompression but only in a single step (forced Z_FINISH)
-- added opaque object for zalloc and zfree.
-- added deflateReset and inflateReset
-- added a variable zlib_version for consistency checking.
-- renamed the 'filter' parameter of deflateInit2 as 'strategy'.
- Added Z_FILTERED and Z_HUFFMAN_ONLY constants.
-
-Changes in 0.4:
-- avoid "zip" everywhere, use zlib instead of ziplib.
-- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush
- if compression method == 8.
-- added adler32 and crc32
-- renamed deflateOptions as deflateInit2, call one or the other but not both
-- added the method parameter for deflateInit2.
-- added inflateInit2
-- simplied considerably deflateInit and inflateInit by not supporting
- user-provided history buffer. This is supported only in deflateInit2
- and inflateInit2.
-
-Changes in 0.3:
-- prefix all macro names with Z_
-- use Z_FINISH instead of deflateEnd to finish compression.
-- added Z_HUFFMAN_ONLY
-- added gzerror()
+++ /dev/null
-
- Frequently Asked Questions about zlib
-
-
-If your question is not there, please check the zlib home page
-http://www.zlib.org which may have more recent information.
-The lastest zlib FAQ is at http://www.gzip.org/zlib/zlib_faq.html
-
-
- 1. Is zlib Y2K-compliant?
-
- Yes. zlib doesn't handle dates.
-
- 2. Where can I get a Windows DLL version?
-
- The zlib sources can be compiled without change to produce a DLL.
- See the file win32/DLL_FAQ.txt in the zlib distribution.
- Pointers to the precompiled DLL are found in the zlib web site at
- http://www.zlib.org.
-
- 3. Where can I get a Visual Basic interface to zlib?
-
- See
- * http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm
- * contrib/visual-basic.txt in the zlib distribution
- * win32/DLL_FAQ.txt in the zlib distribution
-
- 4. compress() returns Z_BUF_ERROR.
-
- Make sure that before the call of compress, the length of the compressed
- buffer is equal to the total size of the compressed buffer and not
- zero. For Visual Basic, check that this parameter is passed by reference
- ("as any"), not by value ("as long").
-
- 5. deflate() or inflate() returns Z_BUF_ERROR.
-
- Before making the call, make sure that avail_in and avail_out are not
- zero. When setting the parameter flush equal to Z_FINISH, also make sure
- that avail_out is big enough to allow processing all pending input.
- Note that a Z_BUF_ERROR is not fatal--another call to deflate() or
- inflate() can be made with more input or output space. A Z_BUF_ERROR
- may in fact be unavoidable depending on how the functions are used, since
- it is not possible to tell whether or not there is more output pending
- when strm.avail_out returns with zero.
-
- 6. Where's the zlib documentation (man pages, etc.)?
-
- It's in zlib.h for the moment, and Francis S. Lin has converted it to a
- web page zlib.html. Volunteers to transform this to Unix-style man pages,
- please contact us (zlib@gzip.org). Examples of zlib usage are in the files
- example.c and minigzip.c.
-
- 7. Why don't you use GNU autoconf or libtool or ...?
-
- Because we would like to keep zlib as a very small and simple
- package. zlib is rather portable and doesn't need much configuration.
-
- 8. I found a bug in zlib.
-
- Most of the time, such problems are due to an incorrect usage of
- zlib. Please try to reproduce the problem with a small program and send
- the corresponding source to us at zlib@gzip.org . Do not send
- multi-megabyte data files without prior agreement.
-
- 9. Why do I get "undefined reference to gzputc"?
-
- If "make test" produces something like
-
- example.o(.text+0x154): undefined reference to `gzputc'
-
- check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
- /usr/X11R6/lib. Remove any old versions, then do "make install".
-
-10. I need a Delphi interface to zlib.
-
- See the contrib/delphi directory in the zlib distribution.
-
-11. Can zlib handle .zip archives?
-
- Not by itself, no. See the directory contrib/minizip in the zlib
- distribution.
-
-12. Can zlib handle .Z files?
-
- No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
- the code of uncompress on your own.
-
-13. How can I make a Unix shared library?
-
- make clean
- ./configure -s
- make
-
-14. How do I install a shared zlib library on Unix?
-
- After the above, then:
-
- make install
-
- However, many flavors of Unix come with a shared zlib already installed.
- Before going to the trouble of compiling a shared version of zlib and
- trying to install it, you may want to check if it's already there! If you
- can #include <zlib.h>, it's there. The -lz option will probably link to it.
-
-15. I have a question about OttoPDF.
-
- We are not the authors of OttoPDF. The real author is on the OttoPDF web
- site: Joel Hainley, jhainley@myndkryme.com.
-
-16. Can zlib decode Flate data in an Adobe PDF file?
-
- Yes. See http://www.fastio.com/ (ClibPDF), or http://www.pdflib.com/ .
- To modify PDF forms, see http://sourceforge.net/projects/acroformtool/ .
-
-17. Why am I getting this "register_frame_info not found" error on Solaris?
-
- After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
- generates an error such as:
-
- ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
- symbol __register_frame_info: referenced symbol not found
-
- The symbol __register_frame_info is not part of zlib, it is generated by
- the C compiler (cc or gcc). You must recompile applications using zlib
- which have this problem. This problem is specific to Solaris. See
- http://www.sunfreeware.com for Solaris versions of zlib and applications
- using zlib.
-
-18. Why does gzip give an error on a file I make with compress/deflate?
-
- The compress and deflate functions produce data in the zlib format, which
- is different and incompatible with the gzip format. The gz* functions in
- zlib on the other hand use the gzip format. Both the zlib and gzip
- formats use the same compressed data format internally, but have different
- headers and trailers around the compressed data.
-
-19. Ok, so why are there two different formats?
-
- The gzip format was designed to retain the directory information about
- a single file, such as the name and last modification date. The zlib
- format on the other hand was designed for in-memory and communication
- channel applications, and has a much more compact header and trailer and
- uses a faster integrity check than gzip.
-
-20. Well that's nice, but how do I make a gzip file in memory?
-
- You can request that deflate write the gzip format instead of the zlib
- format using deflateInit2(). You can also request that inflate decode
- the gzip format using inflateInit2(). Read zlib.h for more details.
-
-21. Is zlib thread-safe?
-
- Yes. However any library routines that zlib uses and any application-
- provided memory allocation routines must also be thread-safe. zlib's gz*
- functions use stdio library routines, and most of zlib's functions use the
- library memory allocation routines by default. zlib's Init functions allow
- for the application to provide custom memory allocation routines.
-
- Of course, you should only operate on any given zlib or gzip stream from a
- single thread at a time.
-
-22. Can I use zlib in my commercial application?
-
- Yes. Please read the license in zlib.h.
-
-23. Is zlib under the GNU license?
-
- No. Please read the license in zlib.h.
-
-24. The license says that altered source versions must be "plainly marked". So
- what exactly do I need to do to meet that requirement?
-
- You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In
- particular, the final version number needs to be changed to "f", and an
- identification string should be appended to ZLIB_VERSION. Version numbers
- x.x.x.f are reserved for modifications to zlib by others than the zlib
- maintainers. For example, if the version of the base zlib you are altering
- is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
- ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also
- update the version strings in deflate.c and inftrees.c.
-
- For altered source distributions, you should also note the origin and
- nature of the changes in zlib.h, as well as in ChangeLog and README, along
- with the dates of the alterations. The origin should include at least your
- name (or your company's name), and an email address to contact for help or
- issues with the library.
-
- Note that distributing a compiled zlib library along with zlib.h and
- zconf.h is also a source distribution, and so you should change
- ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
- in zlib.h as you would for a full source distribution.
-
-25. Will zlib work on a big-endian or little-endian architecture, and can I
- exchange compressed data between them?
-
- Yes and yes.
-
-26. Will zlib work on a 64-bit machine?
-
- It should. It has been tested on 64-bit machines, and has no dependence
- on any data types being limited to 32-bits in length. If you have any
- difficulties, please provide a complete problem report to zlib@gzip.org
-
-27. Will zlib decompress data from the PKWare Data Compression Library?
-
- No. The PKWare DCL uses a completely different compressed data format
- than does PKZIP and zlib. However, you can look in zlib's contrib/blast
- directory for a possible solution to your problem.
-
-28. Can I access data randomly in a compressed stream?
-
- No, not without some preparation. If when compressing you periodically
- use Z_FULL_FLUSH, carefully write all the pending data at those points,
- and keep an index of those locations, then you can start decompression
- at those points. You have to be careful to not use Z_FULL_FLUSH too
- often, since it can significantly degrade compression.
-
-29. Does zlib work on MVS, OS/390, CICS, etc.?
-
- We don't know for sure. We have heard occasional reports of success on
- these systems. If you do use it on one of these, please provide us with
- a report, instructions, and patches that we can reference when we get
- these questions. Thanks.
-
-30. Is there some simpler, easier to read version of inflate I can look at
- to understand the deflate format?
-
- First off, you should read RFC 1951. Second, yes. Look in zlib's
- contrib/puff directory.
-
-31. Does zlib infringe on any patents?
-
- As far as we know, no. In fact, that was originally the whole point behind
- zlib. Look here for some more information:
-
- http://www.gzip.org/#faq11
-
-32. Can zlib work with greater than 4 GB of data?
-
- Yes. inflate() and deflate() will process any amount of data correctly.
- Each call of inflate() or deflate() is limited to input and output chunks
- of the maximum value that can be stored in the compiler's "unsigned int"
- type, but there is no limit to the number of chunks. Note however that the
- strm.total_in and strm_total_out counters may be limited to 4 GB. These
- counters are provided as a convenience and are not used internally by
- inflate() or deflate(). The application can easily set up its own counters
- updated after each call of inflate() or deflate() to count beyond 4 GB.
- compress() and uncompress() may be limited to 4 GB, since they operate in a
- single call. gzseek() and gztell() may be limited to 4 GB depending on how
- zlib is compiled. See the zlibCompileFlags() function in zlib.h.
-
- The word "may" appears several times above since there is a 4 GB limit
- only if the compiler's "long" type is 32 bits. If the compiler's "long"
- type is 64 bits, then the limit is 16 exabytes.
-
-33. Does zlib have any security vulnerabilities?
-
- The only one that we are aware of is potentially in gzprintf(). If zlib
- is compiled to use sprintf() or vsprintf(), then there is no protection
- against a buffer overflow of a 4K string space, other than the caller of
- gzprintf() assuring that the output will not exceed 4K. On the other
- hand, if zlib is compiled to use snprintf() or vsnprintf(), which should
- normally be the case, then there is no vulnerability. The ./configure
- script will display warnings if an insecure variation of sprintf() will
- be used by gzprintf(). Also the zlibCompileFlags() function will return
- information on what variant of sprintf() is used by gzprintf().
-
- If you don't have snprintf() or vsnprintf() and would like one, you can
- find a portable implementation here:
-
- http://www.ijs.si/software/snprintf/
-
- Note that you should be using the most recent version of zlib. Versions
- 1.1.3 and before were subject to a double-free vulnerability.
-
-34. Is there a Java version of zlib?
-
- Probably what you want is to use zlib in Java. zlib is already included
- as part of the Java SDK in the java.util.zip package. If you really want
- a version of zlib written in the Java language, look on the zlib home
- page for links: http://www.zlib.org/
-
-35. I get this or that compiler or source-code scanner warning when I crank it
- up to maximally-pedantic. Can't you guys write proper code?
-
- Many years ago, we gave up attempting to avoid warnings on every compiler
- in the universe. It just got to be a waste of time, and some compilers
- were downright silly. So now, we simply make sure that the code always
- works.
-
-36. Valgrind (or some similar memory access checker) says that deflate is
- performing a conditional jump that depends on an uninitialized value.
- Isn't that a bug?
-
- No. That is intentional for performance reasons, and the output of
- deflate is not affected. This only started showing up recently since
- zlib 1.2.x uses malloc() by default for allocations, whereas earlier
- versions used calloc(), which zeros out the allocated memory.
-
-37. Will zlib read the (insert any ancient or arcane format here) compressed
- data format?
-
- Probably not. Look in the comp.compression FAQ for pointers to various
- formats and associated software.
-
-38. How can I encrypt/decrypt zip files with zlib?
-
- zlib doesn't support encryption. The original PKZIP encryption is very weak
- and can be broken with freely available programs. To get strong encryption,
- use GnuPG, http://www.gnupg.org/ , which already includes zlib compression.
- For PKZIP compatible "encryption", look at http://www.info-zip.org/
-
-39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
-
- "gzip" is the gzip format, and "deflate" is the zlib format. They should
- probably have called the second one "zlib" instead to avoid confusion
- with the raw deflate compressed data format. While the HTTP 1.1 RFC 2616
- correctly points to the zlib specification in RFC 1950 for the "deflate"
- transfer encoding, there have been reports of servers and browsers that
- incorrectly produce or expect raw deflate data per the deflate
- specficiation in RFC 1951, most notably Microsoft. So even though the
- "deflate" transfer encoding using the zlib format would be the more
- efficient approach (and in fact exactly what the zlib format was designed
- for), using the "gzip" transfer encoding is probably more reliable due to
- an unfortunate choice of name on the part of the HTTP 1.1 authors.
-
- Bottom line: use the gzip format for HTTP 1.1 encoding.
-
-40. Does zlib support the new "Deflate64" format introduced by PKWare?
-
- No. PKWare has apparently decided to keep that format proprietary, since
- they have not documented it as they have previous compression formats.
- In any case, the compression improvements are so modest compared to other
- more modern approaches, that it's not worth the effort to implement.
-
-41. Can you please sign these lengthy legal documents and fax them back to us
- so that we can use your software in our product?
-
- No. Go away. Shoo.
+++ /dev/null
-ChangeLog history of changes
-FAQ Frequently Asked Questions about zlib
-INDEX this file
-Makefile makefile for Unix (generated by configure)
-Makefile.in makefile for Unix (template for configure)
-README guess what
-algorithm.txt description of the (de)compression algorithm
-configure configure script for Unix
-zconf.in.h template for zconf.h (used by configure)
-
-amiga/ makefiles for Amiga SAS C
-as400/ makefiles for IBM AS/400
-msdos/ makefiles for MSDOS
-old/ makefiles for various architectures and zlib documentation
- files that have not yet been updated for zlib 1.2.x
-projects/ projects for various Integrated Development Environments
-qnx/ makefiles for QNX
-win32/ makefiles for Windows
-
- zlib public header files (must be kept):
-zconf.h
-zlib.h
-
- private source files used to build the zlib library:
-adler32.c
-compress.c
-crc32.c
-crc32.h
-deflate.c
-deflate.h
-gzio.c
-infback.c
-inffast.c
-inffast.h
-inffixed.h
-inflate.c
-inflate.h
-inftrees.c
-inftrees.h
-trees.c
-trees.h
-uncompr.c
-zutil.c
-zutil.h
-
- source files for sample programs:
-example.c
-minigzip.c
-
- unsupported contribution by third parties
-See contrib/README.contrib
+++ /dev/null
-# Makefile for zlib
-# Copyright (C) 1995-2005 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile and test, type:
-# ./configure; make test
-# The call of configure is optional if you don't have special requirements
-# If you wish to build zlib as a shared library, use: ./configure -s
-
-# To use the asm code, type:
-# cp contrib/asm?86/match.S ./match.S
-# make LOC=-DASMV OBJA=match.o
-
-# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
-# make install
-# To install in $HOME instead of /usr/local, use:
-# make install prefix=$HOME
-
-CC=cc
-
-CFLAGS=-O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-g -DDEBUG
-#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-# -Wstrict-prototypes -Wmissing-prototypes
-
-LDFLAGS=libz.a
-LDSHARED=$(CC)
-CPP=$(CC) -E
-
-LIBS=libz.a
-SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.3
-SHAREDLIBM=libz.so.1
-
-AR=ar rc
-RANLIB=ranlib
-TAR=tar
-SHELL=/bin/sh
-EXE=
-
-prefix = /usr/local
-exec_prefix = ${prefix}
-libdir = ${exec_prefix}/lib
-includedir = ${prefix}/include
-mandir = ${prefix}/share/man
-man3dir = ${mandir}/man3
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-OBJA =
-# to use the asm code: make OBJA=match.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: example$(EXE) minigzip$(EXE)
-
-check: test
-test: all
- @LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
- echo hello world | ./minigzip | ./minigzip -d || \
- echo ' *** minigzip test FAILED ***' ; \
- if ./example; then \
- echo ' *** zlib test OK ***'; \
- else \
- echo ' *** zlib test FAILED ***'; \
- fi
-
-libz.a: $(OBJS) $(OBJA)
- $(AR) $@ $(OBJS) $(OBJA)
- -@ ($(RANLIB) $@ || true) >/dev/null 2>&1
-
-match.o: match.S
- $(CPP) match.S > _match.s
- $(CC) -c _match.s
- mv _match.o match.o
- rm -f _match.s
-
-$(SHAREDLIBV): $(OBJS)
- $(LDSHARED) -o $@ $(OBJS)
- rm -f $(SHAREDLIB) $(SHAREDLIBM)
- ln -s $@ $(SHAREDLIB)
- ln -s $@ $(SHAREDLIBM)
-
-example$(EXE): example.o $(LIBS)
- $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
-
-minigzip$(EXE): minigzip.o $(LIBS)
- $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
-
-install: $(LIBS)
- -@if [ ! -d $(exec_prefix) ]; then mkdir -p $(exec_prefix); fi
- -@if [ ! -d $(includedir) ]; then mkdir -p $(includedir); fi
- -@if [ ! -d $(libdir) ]; then mkdir -p $(libdir); fi
- -@if [ ! -d $(man3dir) ]; then mkdir -p $(man3dir); fi
- cp zlib.h zconf.h $(includedir)
- chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
- cp $(LIBS) $(libdir)
- cd $(libdir); chmod 755 $(LIBS)
- -@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
- cd $(libdir); if test -f $(SHAREDLIBV); then \
- rm -f $(SHAREDLIB) $(SHAREDLIBM); \
- ln -s $(SHAREDLIBV) $(SHAREDLIB); \
- ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
- (ldconfig || true) >/dev/null 2>&1; \
- fi
- cp zlib.3 $(man3dir)
- chmod 644 $(man3dir)/zlib.3
-# The ranlib in install is needed on NeXTSTEP which checks file times
-# ldconfig is for Linux
-
-uninstall:
- cd $(includedir); \
- cd $(libdir); rm -f libz.a; \
- if test -f $(SHAREDLIBV); then \
- rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
- fi
- cd $(man3dir); rm -f zlib.3
-
-mostlyclean: clean
-clean:
- rm -f *.o *~ example$(EXE) minigzip$(EXE) \
- libz.* foo.gz so_locations \
- _match.s maketree contrib/infback9/*.o
-
-maintainer-clean: distclean
-distclean: clean
- cp -p Makefile.in Makefile
- cp -p zconf.in.h zconf.h
- rm -f .DS_Store
-
-tags:
- etags *.[ch]
-
-depend:
- makedepend -- $(CFLAGS) -- *.[ch]
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: crc32.h zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h
+++ /dev/null
-# Makefile for zlib
-# Copyright (C) 1995-2005 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile and test, type:
-# ./configure; make test
-# The call of configure is optional if you don't have special requirements
-# If you wish to build zlib as a shared library, use: ./configure -s
-
-# To use the asm code, type:
-# cp contrib/asm?86/match.S ./match.S
-# make LOC=-DASMV OBJA=match.o
-
-# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
-# make install
-# To install in $HOME instead of /usr/local, use:
-# make install prefix=$HOME
-
-CC=cc
-
-CFLAGS=-O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-g -DDEBUG
-#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-# -Wstrict-prototypes -Wmissing-prototypes
-
-LDFLAGS=libz.a
-LDSHARED=$(CC)
-CPP=$(CC) -E
-
-LIBS=libz.a
-SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.3
-SHAREDLIBM=libz.so.1
-
-AR=ar rc
-RANLIB=ranlib
-TAR=tar
-SHELL=/bin/sh
-EXE=
-
-prefix = /usr/local
-exec_prefix = ${prefix}
-libdir = ${exec_prefix}/lib
-includedir = ${prefix}/include
-mandir = ${prefix}/share/man
-man3dir = ${mandir}/man3
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-OBJA =
-# to use the asm code: make OBJA=match.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: example$(EXE) minigzip$(EXE)
-
-check: test
-test: all
- @LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
- echo hello world | ./minigzip | ./minigzip -d || \
- echo ' *** minigzip test FAILED ***' ; \
- if ./example; then \
- echo ' *** zlib test OK ***'; \
- else \
- echo ' *** zlib test FAILED ***'; \
- fi
-
-libz.a: $(OBJS) $(OBJA)
- $(AR) $@ $(OBJS) $(OBJA)
- -@ ($(RANLIB) $@ || true) >/dev/null 2>&1
-
-match.o: match.S
- $(CPP) match.S > _match.s
- $(CC) -c _match.s
- mv _match.o match.o
- rm -f _match.s
-
-$(SHAREDLIBV): $(OBJS)
- $(LDSHARED) -o $@ $(OBJS)
- rm -f $(SHAREDLIB) $(SHAREDLIBM)
- ln -s $@ $(SHAREDLIB)
- ln -s $@ $(SHAREDLIBM)
-
-example$(EXE): example.o $(LIBS)
- $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
-
-minigzip$(EXE): minigzip.o $(LIBS)
- $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
-
-install: $(LIBS)
- -@if [ ! -d $(exec_prefix) ]; then mkdir -p $(exec_prefix); fi
- -@if [ ! -d $(includedir) ]; then mkdir -p $(includedir); fi
- -@if [ ! -d $(libdir) ]; then mkdir -p $(libdir); fi
- -@if [ ! -d $(man3dir) ]; then mkdir -p $(man3dir); fi
- cp zlib.h zconf.h $(includedir)
- chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
- cp $(LIBS) $(libdir)
- cd $(libdir); chmod 755 $(LIBS)
- -@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
- cd $(libdir); if test -f $(SHAREDLIBV); then \
- rm -f $(SHAREDLIB) $(SHAREDLIBM); \
- ln -s $(SHAREDLIBV) $(SHAREDLIB); \
- ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
- (ldconfig || true) >/dev/null 2>&1; \
- fi
- cp zlib.3 $(man3dir)
- chmod 644 $(man3dir)/zlib.3
-# The ranlib in install is needed on NeXTSTEP which checks file times
-# ldconfig is for Linux
-
-uninstall:
- cd $(includedir); \
- cd $(libdir); rm -f libz.a; \
- if test -f $(SHAREDLIBV); then \
- rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
- fi
- cd $(man3dir); rm -f zlib.3
-
-mostlyclean: clean
-clean:
- rm -f *.o *~ example$(EXE) minigzip$(EXE) \
- libz.* foo.gz so_locations \
- _match.s maketree contrib/infback9/*.o
-
-maintainer-clean: distclean
-distclean: clean
- cp -p Makefile.in Makefile
- cp -p zconf.in.h zconf.h
- rm -f .DS_Store
-
-tags:
- etags *.[ch]
-
-depend:
- makedepend -- $(CFLAGS) -- *.[ch]
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: crc32.h zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h
+++ /dev/null
-ZLIB DATA COMPRESSION LIBRARY
-
-zlib 1.2.3 is a general purpose data compression library. All the code is
-thread safe. The data format used by the zlib library is described by RFCs
-(Request for Comments) 1950 to 1952 in the files
-http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
-and rfc1952.txt (gzip format). These documents are also available in other
-formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
-
-All functions of the compression library are documented in the file zlib.h
-(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
-of the library is given in the file example.c which also tests that the library
-is working correctly. Another example is given in the file minigzip.c. The
-compression library itself is composed of all source files except example.c and
-minigzip.c.
-
-To compile all files and run the test program, follow the instructions given at
-the top of Makefile. In short "make test; make install" should work for most
-machines. For Unix: "./configure; make test; make install". For MSDOS, use one
-of the special makefiles such as Makefile.msc. For VMS, use make_vms.com.
-
-Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
-<info@winimage.com> for the Windows DLL version. The zlib home page is
-http://www.zlib.org or http://www.gzip.org/zlib/ Before reporting a problem,
-please check this site to verify that you have the latest version of zlib;
-otherwise get the latest version and check whether the problem still exists or
-not.
-
-PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html before asking
-for help.
-
-Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
-issue of Dr. Dobb's Journal; a copy of the article is available in
-http://dogma.net/markn/articles/zlibtool/zlibtool.htm
-
-The changes made in version 1.2.3 are documented in the file ChangeLog.
-
-Unsupported third party contributions are provided in directory "contrib".
-
-A Java implementation of zlib is available in the Java Development Kit
-http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html
-See the zlib home page http://www.zlib.org for details.
-
-A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is in the
-CPAN (Comprehensive Perl Archive Network) sites
-http://www.cpan.org/modules/by-module/Compress/
-
-A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
-available in Python 1.5 and later versions, see
-http://www.python.org/doc/lib/module-zlib.html
-
-A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com> is
-availlable at http://www.oche.de/~akupries/soft/trf/trf_zip.html
-
-An experimental package to read and write files in .zip format, written on top
-of zlib by Gilles Vollant <info@winimage.com>, is available in the
-contrib/minizip directory of zlib.
-
-
-Notes for some targets:
-
-- For Windows DLL versions, please see win32/DLL_FAQ.txt
-
-- For 64-bit Irix, deflate.c must be compiled without any optimization. With
- -O, one libpng test fails. The test works in 32 bit mode (with the -n32
- compiler flag). The compiler bug has been reported to SGI.
-
-- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
- when compiled with cc.
-
-- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
- necessary to get gzprintf working correctly. This is done by configure.
-
-- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
- other compilers. Use "make test" to check your compiler.
-
-- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
-
-- For PalmOs, see http://palmzlib.sourceforge.net/
-
-- When building a shared, i.e. dynamic library on Mac OS X, the library must be
- installed before testing (do "make install" before "make test"), since the
- library location is specified in the library.
-
-
-Acknowledgments:
-
- The deflate format used by zlib was defined by Phil Katz. The deflate
- and zlib specifications were written by L. Peter Deutsch. Thanks to all the
- people who reported problems and suggested various improvements in zlib;
- they are too numerous to cite here.
-
-Copyright notice:
-
- (C) 1995-2004 Jean-loup Gailly and Mark Adler
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Jean-loup Gailly Mark Adler
- jloup@gzip.org madler@alumni.caltech.edu
-
-If you use the zlib library in a product, we would appreciate *not*
-receiving lengthy legal documents to sign. The sources are provided
-for free but without warranty of any kind. The library has been
-entirely written by Jean-loup Gailly and Mark Adler; it does not
-include third-party code.
-
-If you redistribute modified sources, we would appreciate that you include
-in the file ChangeLog history information documenting your changes. Please
-read the FAQ for more information on the distribution of modified source
-versions.
+++ /dev/null
-/* adler32.c -- compute the Adler-32 checksum of a data stream
- * Copyright (C) 1995-2004 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-
-#define BASE 65521UL /* largest prime smaller than 65536 */
-#define NMAX 5552
-/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
-
-#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
-#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
-#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
-#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
-#define DO16(buf) DO8(buf,0); DO8(buf,8);
-
-/* use NO_DIVIDE if your processor does not do division in hardware */
-#ifdef NO_DIVIDE
-# define MOD(a) \
- do { \
- if (a >= (BASE << 16)) a -= (BASE << 16); \
- if (a >= (BASE << 15)) a -= (BASE << 15); \
- if (a >= (BASE << 14)) a -= (BASE << 14); \
- if (a >= (BASE << 13)) a -= (BASE << 13); \
- if (a >= (BASE << 12)) a -= (BASE << 12); \
- if (a >= (BASE << 11)) a -= (BASE << 11); \
- if (a >= (BASE << 10)) a -= (BASE << 10); \
- if (a >= (BASE << 9)) a -= (BASE << 9); \
- if (a >= (BASE << 8)) a -= (BASE << 8); \
- if (a >= (BASE << 7)) a -= (BASE << 7); \
- if (a >= (BASE << 6)) a -= (BASE << 6); \
- if (a >= (BASE << 5)) a -= (BASE << 5); \
- if (a >= (BASE << 4)) a -= (BASE << 4); \
- if (a >= (BASE << 3)) a -= (BASE << 3); \
- if (a >= (BASE << 2)) a -= (BASE << 2); \
- if (a >= (BASE << 1)) a -= (BASE << 1); \
- if (a >= BASE) a -= BASE; \
- } while (0)
-# define MOD4(a) \
- do { \
- if (a >= (BASE << 4)) a -= (BASE << 4); \
- if (a >= (BASE << 3)) a -= (BASE << 3); \
- if (a >= (BASE << 2)) a -= (BASE << 2); \
- if (a >= (BASE << 1)) a -= (BASE << 1); \
- if (a >= BASE) a -= BASE; \
- } while (0)
-#else
-# define MOD(a) a %= BASE
-# define MOD4(a) a %= BASE
-#endif
-
-/* ========================================================================= */
-uLong ZEXPORT adler32(adler, buf, len)
- uLong adler;
- const Bytef *buf;
- uInt len;
-{
- unsigned long sum2;
- unsigned n;
-
- /* split Adler-32 into component sums */
- sum2 = (adler >> 16) & 0xffff;
- adler &= 0xffff;
-
- /* in case user likes doing a byte at a time, keep it fast */
- if (len == 1) {
- adler += buf[0];
- if (adler >= BASE)
- adler -= BASE;
- sum2 += adler;
- if (sum2 >= BASE)
- sum2 -= BASE;
- return adler | (sum2 << 16);
- }
-
- /* initial Adler-32 value (deferred check for len == 1 speed) */
- if (buf == Z_NULL)
- return 1L;
-
- /* in case short lengths are provided, keep it somewhat fast */
- if (len < 16) {
- while (len--) {
- adler += *buf++;
- sum2 += adler;
- }
- if (adler >= BASE)
- adler -= BASE;
- MOD4(sum2); /* only added so many BASE's */
- return adler | (sum2 << 16);
- }
-
- /* do length NMAX blocks -- requires just one modulo operation */
- while (len >= NMAX) {
- len -= NMAX;
- n = NMAX / 16; /* NMAX is divisible by 16 */
- do {
- DO16(buf); /* 16 sums unrolled */
- buf += 16;
- } while (--n);
- MOD(adler);
- MOD(sum2);
- }
-
- /* do remaining bytes (less than NMAX, still just one modulo) */
- if (len) { /* avoid modulos if none remaining */
- while (len >= 16) {
- len -= 16;
- DO16(buf);
- buf += 16;
- }
- while (len--) {
- adler += *buf++;
- sum2 += adler;
- }
- MOD(adler);
- MOD(sum2);
- }
-
- /* return recombined sums */
- return adler | (sum2 << 16);
-}
-
-/* ========================================================================= */
-uLong ZEXPORT adler32_combine(adler1, adler2, len2)
- uLong adler1;
- uLong adler2;
- z_off_t len2;
-{
- unsigned long sum1;
- unsigned long sum2;
- unsigned rem;
-
- /* the derivation of this formula is left as an exercise for the reader */
- rem = (unsigned)(len2 % BASE);
- sum1 = adler1 & 0xffff;
- sum2 = rem * sum1;
- MOD(sum2);
- sum1 += (adler2 & 0xffff) + BASE - 1;
- sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
- if (sum1 > BASE) sum1 -= BASE;
- if (sum1 > BASE) sum1 -= BASE;
- if (sum2 > (BASE << 1)) sum2 -= (BASE << 1);
- if (sum2 > BASE) sum2 -= BASE;
- return sum1 | (sum2 << 16);
-}
+++ /dev/null
-1. Compression algorithm (deflate)
-
-The deflation algorithm used by gzip (also zip and zlib) is a variation of
-LZ77 (Lempel-Ziv 1977, see reference below). It finds duplicated strings in
-the input data. The second occurrence of a string is replaced by a
-pointer to the previous string, in the form of a pair (distance,
-length). Distances are limited to 32K bytes, and lengths are limited
-to 258 bytes. When a string does not occur anywhere in the previous
-32K bytes, it is emitted as a sequence of literal bytes. (In this
-description, `string' must be taken as an arbitrary sequence of bytes,
-and is not restricted to printable characters.)
-
-Literals or match lengths are compressed with one Huffman tree, and
-match distances are compressed with another tree. The trees are stored
-in a compact form at the start of each block. The blocks can have any
-size (except that the compressed data for one block must fit in
-available memory). A block is terminated when deflate() determines that
-it would be useful to start another block with fresh trees. (This is
-somewhat similar to the behavior of LZW-based _compress_.)
-
-Duplicated strings are found using a hash table. All input strings of
-length 3 are inserted in the hash table. A hash index is computed for
-the next 3 bytes. If the hash chain for this index is not empty, all
-strings in the chain are compared with the current input string, and
-the longest match is selected.
-
-The hash chains are searched starting with the most recent strings, to
-favor small distances and thus take advantage of the Huffman encoding.
-The hash chains are singly linked. There are no deletions from the
-hash chains, the algorithm simply discards matches that are too old.
-
-To avoid a worst-case situation, very long hash chains are arbitrarily
-truncated at a certain length, determined by a runtime option (level
-parameter of deflateInit). So deflate() does not always find the longest
-possible match but generally finds a match which is long enough.
-
-deflate() also defers the selection of matches with a lazy evaluation
-mechanism. After a match of length N has been found, deflate() searches for
-a longer match at the next input byte. If a longer match is found, the
-previous match is truncated to a length of one (thus producing a single
-literal byte) and the process of lazy evaluation begins again. Otherwise,
-the original match is kept, and the next match search is attempted only N
-steps later.
-
-The lazy match evaluation is also subject to a runtime parameter. If
-the current match is long enough, deflate() reduces the search for a longer
-match, thus speeding up the whole process. If compression ratio is more
-important than speed, deflate() attempts a complete second search even if
-the first match is already long enough.
-
-The lazy match evaluation is not performed for the fastest compression
-modes (level parameter 1 to 3). For these fast modes, new strings
-are inserted in the hash table only when no match was found, or
-when the match is not too long. This degrades the compression ratio
-but saves time since there are both fewer insertions and fewer searches.
-
-
-2. Decompression algorithm (inflate)
-
-2.1 Introduction
-
-The key question is how to represent a Huffman code (or any prefix code) so
-that you can decode fast. The most important characteristic is that shorter
-codes are much more common than longer codes, so pay attention to decoding the
-short codes fast, and let the long codes take longer to decode.
-
-inflate() sets up a first level table that covers some number of bits of
-input less than the length of longest code. It gets that many bits from the
-stream, and looks it up in the table. The table will tell if the next
-code is that many bits or less and how many, and if it is, it will tell
-the value, else it will point to the next level table for which inflate()
-grabs more bits and tries to decode a longer code.
-
-How many bits to make the first lookup is a tradeoff between the time it
-takes to decode and the time it takes to build the table. If building the
-table took no time (and if you had infinite memory), then there would only
-be a first level table to cover all the way to the longest code. However,
-building the table ends up taking a lot longer for more bits since short
-codes are replicated many times in such a table. What inflate() does is
-simply to make the number of bits in the first table a variable, and then
-to set that variable for the maximum speed.
-
-For inflate, which has 286 possible codes for the literal/length tree, the size
-of the first table is nine bits. Also the distance trees have 30 possible
-values, and the size of the first table is six bits. Note that for each of
-those cases, the table ended up one bit longer than the ``average'' code
-length, i.e. the code length of an approximately flat code which would be a
-little more than eight bits for 286 symbols and a little less than five bits
-for 30 symbols.
-
-
-2.2 More details on the inflate table lookup
-
-Ok, you want to know what this cleverly obfuscated inflate tree actually
-looks like. You are correct that it's not a Huffman tree. It is simply a
-lookup table for the first, let's say, nine bits of a Huffman symbol. The
-symbol could be as short as one bit or as long as 15 bits. If a particular
-symbol is shorter than nine bits, then that symbol's translation is duplicated
-in all those entries that start with that symbol's bits. For example, if the
-symbol is four bits, then it's duplicated 32 times in a nine-bit table. If a
-symbol is nine bits long, it appears in the table once.
-
-If the symbol is longer than nine bits, then that entry in the table points
-to another similar table for the remaining bits. Again, there are duplicated
-entries as needed. The idea is that most of the time the symbol will be short
-and there will only be one table look up. (That's whole idea behind data
-compression in the first place.) For the less frequent long symbols, there
-will be two lookups. If you had a compression method with really long
-symbols, you could have as many levels of lookups as is efficient. For
-inflate, two is enough.
-
-So a table entry either points to another table (in which case nine bits in
-the above example are gobbled), or it contains the translation for the symbol
-and the number of bits to gobble. Then you start again with the next
-ungobbled bit.
-
-You may wonder: why not just have one lookup table for how ever many bits the
-longest symbol is? The reason is that if you do that, you end up spending
-more time filling in duplicate symbol entries than you do actually decoding.
-At least for deflate's output that generates new trees every several 10's of
-kbytes. You can imagine that filling in a 2^15 entry table for a 15-bit code
-would take too long if you're only decoding several thousand symbols. At the
-other extreme, you could make a new table for every bit in the code. In fact,
-that's essentially a Huffman tree. But then you spend two much time
-traversing the tree while decoding, even for short symbols.
-
-So the number of bits for the first lookup table is a trade of the time to
-fill out the table vs. the time spent looking at the second level and above of
-the table.
-
-Here is an example, scaled down:
-
-The code being decoded, with 10 symbols, from 1 to 6 bits long:
-
-A: 0
-B: 10
-C: 1100
-D: 11010
-E: 11011
-F: 11100
-G: 11101
-H: 11110
-I: 111110
-J: 111111
-
-Let's make the first table three bits long (eight entries):
-
-000: A,1
-001: A,1
-010: A,1
-011: A,1
-100: B,2
-101: B,2
-110: -> table X (gobble 3 bits)
-111: -> table Y (gobble 3 bits)
-
-Each entry is what the bits decode as and how many bits that is, i.e. how
-many bits to gobble. Or the entry points to another table, with the number of
-bits to gobble implicit in the size of the table.
-
-Table X is two bits long since the longest code starting with 110 is five bits
-long:
-
-00: C,1
-01: C,1
-10: D,2
-11: E,2
-
-Table Y is three bits long since the longest code starting with 111 is six
-bits long:
-
-000: F,2
-001: F,2
-010: G,2
-011: G,2
-100: H,2
-101: H,2
-110: I,3
-111: J,3
-
-So what we have here are three tables with a total of 20 entries that had to
-be constructed. That's compared to 64 entries for a single table. Or
-compared to 16 entries for a Huffman tree (six two entry tables and one four
-entry table). Assuming that the code ideally represents the probability of
-the symbols, it takes on the average 1.25 lookups per symbol. That's compared
-to one lookup for the single table, or 1.66 lookups per symbol for the
-Huffman tree.
-
-There, I think that gives you a picture of what's going on. For inflate, the
-meaning of a particular symbol is often more than just a letter. It can be a
-byte (a "literal"), or it can be either a length or a distance which
-indicates a base value and a number of bits to fetch after the code that is
-added to the base value. Or it might be the special end-of-block code. The
-data structures created in inftrees.c try to encode all that information
-compactly in the tables.
-
-
-Jean-loup Gailly Mark Adler
-jloup@gzip.org madler@alumni.caltech.edu
-
-
-References:
-
-[LZ77] Ziv J., Lempel A., ``A Universal Algorithm for Sequential Data
-Compression,'' IEEE Transactions on Information Theory, Vol. 23, No. 3,
-pp. 337-343.
-
-``DEFLATE Compressed Data Format Specification'' available in
-http://www.ietf.org/rfc/rfc1951.txt
+++ /dev/null
-# Amiga powerUP (TM) Makefile
-# makefile for libpng and SAS C V6.58/7.00 PPC compiler
-# Copyright (C) 1998 by Andreas R. Kleinert
-
-LIBNAME = libzip.a
-
-CC = scppc
-CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
- OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
-AR = ppc-amigaos-ar cr
-RANLIB = ppc-amigaos-ranlib
-LD = ppc-amigaos-ld -r
-LDFLAGS = -o
-LDLIBS = LIB:scppc.a LIB:end.o
-RM = delete quiet
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: example minigzip
-
-check: test
-test: all
- example
- echo hello world | minigzip | minigzip -d
-
-$(LIBNAME): $(OBJS)
- $(AR) $@ $(OBJS)
- -$(RANLIB) $@
-
-example: example.o $(LIBNAME)
- $(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
-
-minigzip: minigzip.o $(LIBNAME)
- $(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
-
-mostlyclean: clean
-clean:
- $(RM) *.o example minigzip $(LIBNAME) foo.gz
-
-zip:
- zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
- descrip.mms *.[ch]
-
-tgz:
- cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
- zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: crc32.h zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h
+++ /dev/null
-# SMakefile for zlib
-# Modified from the standard UNIX Makefile Copyright Jean-loup Gailly
-# Osma Ahvenlampi <Osma.Ahvenlampi@hut.fi>
-# Amiga, SAS/C 6.56 & Smake
-
-CC=sc
-CFLAGS=OPT
-#CFLAGS=OPT CPU=68030
-#CFLAGS=DEBUG=LINE
-LDFLAGS=LIB z.lib
-
-SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
- NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
- DEF=POSTINC
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: SCOPTIONS example minigzip
-
-check: test
-test: all
- example
- echo hello world | minigzip | minigzip -d
-
-install: z.lib
- copy clone zlib.h zconf.h INCLUDE:
- copy clone z.lib LIB:
-
-z.lib: $(OBJS)
- oml z.lib r $(OBJS)
-
-example: example.o z.lib
- $(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS)
-
-minigzip: minigzip.o z.lib
- $(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)
-
-mostlyclean: clean
-clean:
- -delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS
-
-SCOPTIONS: Makefile.sas
- copy to $@ <from <
-$(SCOPTIONS)
-<
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: crc32.h zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h
+++ /dev/null
-STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
-
-/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
-/* Version 1.1.3 entry points. */
-/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
-
-/********************************************************************/
-/* *MODULE ADLER32 ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("adler32")
-
-/********************************************************************/
-/* *MODULE COMPRESS ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("compress")
- EXPORT SYMBOL("compress2")
-
-/********************************************************************/
-/* *MODULE CRC32 ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("crc32")
- EXPORT SYMBOL("get_crc_table")
-
-/********************************************************************/
-/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("deflate")
- EXPORT SYMBOL("deflateEnd")
- EXPORT SYMBOL("deflateSetDictionary")
- EXPORT SYMBOL("deflateCopy")
- EXPORT SYMBOL("deflateReset")
- EXPORT SYMBOL("deflateParams")
- EXPORT SYMBOL("deflatePrime")
- EXPORT SYMBOL("deflateInit_")
- EXPORT SYMBOL("deflateInit2_")
-
-/********************************************************************/
-/* *MODULE GZIO ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("gzopen")
- EXPORT SYMBOL("gzdopen")
- EXPORT SYMBOL("gzsetparams")
- EXPORT SYMBOL("gzread")
- EXPORT SYMBOL("gzwrite")
- EXPORT SYMBOL("gzprintf")
- EXPORT SYMBOL("gzputs")
- EXPORT SYMBOL("gzgets")
- EXPORT SYMBOL("gzputc")
- EXPORT SYMBOL("gzgetc")
- EXPORT SYMBOL("gzflush")
- EXPORT SYMBOL("gzseek")
- EXPORT SYMBOL("gzrewind")
- EXPORT SYMBOL("gztell")
- EXPORT SYMBOL("gzeof")
- EXPORT SYMBOL("gzclose")
- EXPORT SYMBOL("gzerror")
-
-/********************************************************************/
-/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("inflate")
- EXPORT SYMBOL("inflateEnd")
- EXPORT SYMBOL("inflateSetDictionary")
- EXPORT SYMBOL("inflateSync")
- EXPORT SYMBOL("inflateReset")
- EXPORT SYMBOL("inflateInit_")
- EXPORT SYMBOL("inflateInit2_")
- EXPORT SYMBOL("inflateSyncPoint")
-
-/********************************************************************/
-/* *MODULE UNCOMPR ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("uncompress")
-
-/********************************************************************/
-/* *MODULE ZUTIL ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("zlibVersion")
- EXPORT SYMBOL("zError")
-
-/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
-/* Version 1.2.1 additional entry points. */
-/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
-
-/********************************************************************/
-/* *MODULE COMPRESS ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("compressBound")
-
-/********************************************************************/
-/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("deflateBound")
-
-/********************************************************************/
-/* *MODULE GZIO ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("gzungetc")
- EXPORT SYMBOL("gzclearerr")
-
-/********************************************************************/
-/* *MODULE INFBACK ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("inflateBack")
- EXPORT SYMBOL("inflateBackEnd")
- EXPORT SYMBOL("inflateBackInit_")
-
-/********************************************************************/
-/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("inflateCopy")
-
-/********************************************************************/
-/* *MODULE ZUTIL ZLIB 01/02/01 00:15:09 */
-/********************************************************************/
-
- EXPORT SYMBOL("zlibCompileFlags")
-
-ENDPGMEXP
+++ /dev/null
-/******************************************************************************/
-/* */
-/* ZLIB */
-/* */
-/* Compile sources into modules and link them into a service program. */
-/* */
-/******************************************************************************/
-
- PGM
-
-/* Configuration adjustable parameters. */
-
- DCL VAR(&SRCLIB) TYPE(*CHAR) LEN(10) +
- VALUE('ZLIB') /* Source library. */
- DCL VAR(&SRCFILE) TYPE(*CHAR) LEN(10) +
- VALUE('SOURCES') /* Source member file. */
- DCL VAR(&CTLFILE) TYPE(*CHAR) LEN(10) +
- VALUE('TOOLS') /* Control member file. */
-
- DCL VAR(&MODLIB) TYPE(*CHAR) LEN(10) +
- VALUE('ZLIB') /* Module library. */
-
- DCL VAR(&SRVLIB) TYPE(*CHAR) LEN(10) +
- VALUE('LGPL') /* Service program library. */
-
- DCL VAR(&CFLAGS) TYPE(*CHAR) +
- VALUE('OPTIMIZE(40)') /* Compile options. */
-
-
-/* Working storage. */
-
- DCL VAR(&CMDLEN) TYPE(*DEC) LEN(15 5) VALUE(300) /* Command length. */
- DCL VAR(&CMD) TYPE(*CHAR) LEN(512)
-
-
-/* Compile sources into modules. */
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/ADLER32) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/COMPRESS) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/CRC32) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/DEFLATE) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/GZIO) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/INFBACK) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/INFFAST) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/INFLATE) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/INFTREES) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/TREES) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/UNCOMPR) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
- CHGVAR VAR(&CMD) VALUE('CRTCMOD MODULE(' *TCAT &MODLIB *TCAT +
- '/ZUTIL) SRCFILE(' *TCAT +
- &SRCLIB *TCAT '/' *TCAT &SRCFILE *TCAT +
- ') SYSIFCOPT(*IFSIO)' *BCAT &CFLAGS)
- CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
-
-
-/* Link modules into a service program. */
-
- CRTSRVPGM SRVPGM(&SRVLIB/ZLIB) +
- MODULE(&MODLIB/ADLER32 &MODLIB/COMPRESS +
- &MODLIB/CRC32 &MODLIB/DEFLATE +
- &MODLIB/GZIO &MODLIB/INFBACK +
- &MODLIB/INFFAST &MODLIB/INFLATE +
- &MODLIB/INFTREES &MODLIB/TREES +
- &MODLIB/UNCOMPR &MODLIB/ZUTIL) +
- SRCFILE(&SRCLIB/&CTLFILE) SRCMBR(BNDSRC) +
- TEXT('ZLIB 1.2.3') TGTRLS(V4R4M0)
-
- ENDPGM
+++ /dev/null
- ZLIB version 1.2.3 for AS400 installation instructions
-
-I) From an AS400 *SAVF file:
-
-1) Unpacking archive to an AS400 save file
-
-On the AS400:
-
-_ Create the ZLIB AS400 library:
-
- CRTLIB LIB(ZLIB) TYPE(PROD) TEXT('ZLIB compression API library')
-
-_ Create a work save file, for example:
-
- CRTSAVF FILE(ZLIB/ZLIBSAVF)
-
-On a PC connected to the target AS400:
-
-_ Unpack the save file image to a PC file "ZLIBSAVF"
-_ Upload this file into the save file on the AS400, for example
- using ftp in BINARY mode.
-
-
-2) Populating the ZLIB AS400 source library
-
-On the AS400:
-
-_ Extract the saved objects into the ZLIB AS400 library using:
-
-RSTOBJ OBJ(*ALL) SAVLIB(ZLIB) DEV(*SAVF) SAVF(ZLIB/ZLIBSAVF) RSTLIB(ZLIB)
-
-
-3) Customize installation:
-
-_ Edit CL member ZLIB/TOOLS(COMPILE) and change parameters if needed,
- according to the comments.
-
-_ Compile this member with:
-
- CRTCLPGM PGM(ZLIB/COMPILE) SRCFILE(ZLIB/TOOLS) SRCMBR(COMPILE)
-
-
-4) Compile and generate the service program:
-
-_ This can now be done by executing:
-
- CALL PGM(ZLIB/COMPILE)
-
-
-
-II) From the original source distribution:
-
-1) On the AS400, create the source library:
-
- CRTLIB LIB(ZLIB) TYPE(PROD) TEXT('ZLIB compression API library')
-
-2) Create the source files:
-
- CRTSRCPF FILE(ZLIB/SOURCES) RCDLEN(112) TEXT('ZLIB library modules')
- CRTSRCPF FILE(ZLIB/H) RCDLEN(112) TEXT('ZLIB library includes')
- CRTSRCPF FILE(ZLIB/TOOLS) RCDLEN(112) TEXT('ZLIB library control utilities')
-
-3) From the machine hosting the distribution files, upload them (with
- FTP in text mode, for example) according to the following table:
-
- Original AS400 AS400 AS400 AS400
- file file member type description
- SOURCES Original ZLIB C subprogram sources
- adler32.c ADLER32 C ZLIB - Compute the Adler-32 checksum of a dta strm
- compress.c COMPRESS C ZLIB - Compress a memory buffer
- crc32.c CRC32 C ZLIB - Compute the CRC-32 of a data stream
- deflate.c DEFLATE C ZLIB - Compress data using the deflation algorithm
- gzio.c GZIO C ZLIB - IO on .gz files
- infback.c INFBACK C ZLIB - Inflate using a callback interface
- inffast.c INFFAST C ZLIB - Fast proc. literals & length/distance pairs
- inflate.c INFLATE C ZLIB - Interface to inflate modules
- inftrees.c INFTREES C ZLIB - Generate Huffman trees for efficient decode
- trees.c TREES C ZLIB - Output deflated data using Huffman coding
- uncompr.c UNCOMPR C ZLIB - Decompress a memory buffer
- zutil.c ZUTIL C ZLIB - Target dependent utility functions
- H Original ZLIB C and ILE/RPG include files
- crc32.h CRC32 C ZLIB - CRC32 tables
- deflate.h DEFLATE C ZLIB - Internal compression state
- inffast.h INFFAST C ZLIB - Header to use inffast.c
- inffixed.h INFFIXED C ZLIB - Table for decoding fixed codes
- inflate.h INFLATE C ZLIB - Internal inflate state definitions
- inftrees.h INFTREES C ZLIB - Header to use inftrees.c
- trees.h TREES C ZLIB - Created automatically with -DGEN_TREES_H
- zconf.h ZCONF C ZLIB - Compression library configuration
- zlib.h ZLIB C ZLIB - Compression library C user interface
- as400/zlib.inc ZLIB.INC RPGLE ZLIB - Compression library ILE RPG user interface
- zutil.h ZUTIL C ZLIB - Internal interface and configuration
- TOOLS Building source software & AS/400 README
- as400/bndsrc BNDSRC Entry point exportation list
- as400/compile.clp COMPILE CLP Compile sources & generate service program
- as400/readme.txt README TXT Installation instructions
-
-4) Continue as in I)3).
-
-
-
-
-Notes: For AS400 ILE RPG programmers, a /copy member defining the ZLIB
- API prototypes for ILE RPG can be found in ZLIB/H(ZLIB.INC).
- Please read comments in this member for more information.
-
- Remember that most foreign textual data are ASCII coded: this
- implementation does not handle conversion from/to ASCII, so
- text data code conversions must be done explicitely.
-
- Always open zipped files in binary mode.
+++ /dev/null
- * ZLIB.INC - Interface to the general purpose compression library
- *
- * ILE RPG400 version by Patrick Monnerat, DATASPHERE.
- * Version 1.2.3
- *
- *
- * WARNING:
- * Procedures inflateInit(), inflateInit2(), deflateInit(),
- * deflateInit2() and inflateBackInit() need to be called with
- * two additional arguments:
- * the package version string and the stream control structure.
- * size. This is needed because RPG lacks some macro feature.
- * Call these procedures as:
- * inflateInit(...: ZLIB_VERSION: %size(z_stream))
- *
- /if not defined(ZLIB_H_)
- /define ZLIB_H_
- *
- **************************************************************************
- * Constants
- **************************************************************************
- *
- * Versioning information.
- *
- D ZLIB_VERSION C '1.2.3'
- D ZLIB_VERNUM C X'1230'
- *
- * Other equates.
- *
- D Z_NO_FLUSH C 0
- D Z_SYNC_FLUSH C 2
- D Z_FULL_FLUSH C 3
- D Z_FINISH C 4
- D Z_BLOCK C 5
- *
- D Z_OK C 0
- D Z_STREAM_END C 1
- D Z_NEED_DICT C 2
- D Z_ERRNO C -1
- D Z_STREAM_ERROR C -2
- D Z_DATA_ERROR C -3
- D Z_MEM_ERROR C -4
- D Z_BUF_ERROR C -5
- DZ_VERSION_ERROR C -6
- *
- D Z_NO_COMPRESSION...
- D C 0
- D Z_BEST_SPEED C 1
- D Z_BEST_COMPRESSION...
- D C 9
- D Z_DEFAULT_COMPRESSION...
- D C -1
- *
- D Z_FILTERED C 1
- D Z_HUFFMAN_ONLY C 2
- D Z_RLE C 3
- D Z_DEFAULT_STRATEGY...
- D C 0
- *
- D Z_BINARY C 0
- D Z_ASCII C 1
- D Z_UNKNOWN C 2
- *
- D Z_DEFLATED C 8
- *
- D Z_NULL C 0
- *
- **************************************************************************
- * Types
- **************************************************************************
- *
- D z_streamp S * Stream struct ptr
- D gzFile S * File pointer
- D z_off_t S 10i 0 Stream offsets
- *
- **************************************************************************
- * Structures
- **************************************************************************
- *
- * The GZIP encode/decode stream support structure.
- *
- D z_stream DS align based(z_streamp)
- D zs_next_in * Next input byte
- D zs_avail_in 10U 0 Byte cnt at next_in
- D zs_total_in 10U 0 Total bytes read
- D zs_next_out * Output buffer ptr
- D zs_avail_out 10U 0 Room left @ next_out
- D zs_total_out 10U 0 Total bytes written
- D zs_msg * Last errmsg or null
- D zs_state * Internal state
- D zs_zalloc * procptr Int. state allocator
- D zs_free * procptr Int. state dealloc.
- D zs_opaque * Private alloc. data
- D zs_data_type 10i 0 ASC/BIN best guess
- D zs_adler 10u 0 Uncompr. adler32 val
- D 10U 0 Reserved
- D 10U 0 Ptr. alignment
- *
- **************************************************************************
- * Utility function prototypes
- **************************************************************************
- *
- D compress PR 10I 0 extproc('compress')
- D dest 32767 options(*varsize) Destination buffer
- D destLen 10U 0 Destination length
- D source 32767 const options(*varsize) Source buffer
- D sourceLen 10u 0 value Source length
- *
- D compress2 PR 10I 0 extproc('compress2')
- D dest 32767 options(*varsize) Destination buffer
- D destLen 10U 0 Destination length
- D source 32767 const options(*varsize) Source buffer
- D sourceLen 10U 0 value Source length
- D level 10I 0 value Compression level
- *
- D compressBound PR 10U 0 extproc('compressBound')
- D sourceLen 10U 0 value
- *
- D uncompress PR 10I 0 extproc('uncompress')
- D dest 32767 options(*varsize) Destination buffer
- D destLen 10U 0 Destination length
- D source 32767 const options(*varsize) Source buffer
- D sourceLen 10U 0 value Source length
- *
- D gzopen PR extproc('gzopen')
- D like(gzFile)
- D path * value options(*string) File pathname
- D mode * value options(*string) Open mode
- *
- D gzdopen PR extproc('gzdopen')
- D like(gzFile)
- D fd 10i 0 value File descriptor
- D mode * value options(*string) Open mode
- *
- D gzsetparams PR 10I 0 extproc('gzsetparams')
- D file value like(gzFile) File pointer
- D level 10I 0 value
- D strategy 10i 0 value
- *
- D gzread PR 10I 0 extproc('gzread')
- D file value like(gzFile) File pointer
- D buf 32767 options(*varsize) Buffer
- D len 10u 0 value Buffer length
- *
- D gzwrite PR 10I 0 extproc('gzwrite')
- D file value like(gzFile) File pointer
- D buf 32767 const options(*varsize) Buffer
- D len 10u 0 value Buffer length
- *
- D gzputs PR 10I 0 extproc('gzputs')
- D file value like(gzFile) File pointer
- D s * value options(*string) String to output
- *
- D gzgets PR * extproc('gzgets')
- D file value like(gzFile) File pointer
- D buf 32767 options(*varsize) Read buffer
- D len 10i 0 value Buffer length
- *
- D gzflush PR 10i 0 extproc('gzflush')
- D file value like(gzFile) File pointer
- D flush 10I 0 value Type of flush
- *
- D gzseek PR extproc('gzseek')
- D like(z_off_t)
- D file value like(gzFile) File pointer
- D offset value like(z_off_t) Offset
- D whence 10i 0 value Origin
- *
- D gzrewind PR 10i 0 extproc('gzrewind')
- D file value like(gzFile) File pointer
- *
- D gztell PR extproc('gztell')
- D like(z_off_t)
- D file value like(gzFile) File pointer
- *
- D gzeof PR 10i 0 extproc('gzeof')
- D file value like(gzFile) File pointer
- *
- D gzclose PR 10i 0 extproc('gzclose')
- D file value like(gzFile) File pointer
- *
- D gzerror PR * extproc('gzerror') Error string
- D file value like(gzFile) File pointer
- D errnum 10I 0 Error code
- *
- D gzclearerr PR extproc('gzclearerr')
- D file value like(gzFile) File pointer
- *
- **************************************************************************
- * Basic function prototypes
- **************************************************************************
- *
- D zlibVersion PR * extproc('zlibVersion') Version string
- *
- D deflateInit PR 10I 0 extproc('deflateInit_') Init. compression
- D strm like(z_stream) Compression stream
- D level 10I 0 value Compression level
- D version * value options(*string) Version string
- D stream_size 10i 0 value Stream struct. size
- *
- D deflate PR 10I 0 extproc('deflate') Compress data
- D strm like(z_stream) Compression stream
- D flush 10I 0 value Flush type required
- *
- D deflateEnd PR 10I 0 extproc('deflateEnd') Termin. compression
- D strm like(z_stream) Compression stream
- *
- D inflateInit PR 10I 0 extproc('inflateInit_') Init. expansion
- D strm like(z_stream) Expansion stream
- D version * value options(*string) Version string
- D stream_size 10i 0 value Stream struct. size
- *
- D inflate PR 10I 0 extproc('inflate') Expand data
- D strm like(z_stream) Expansion stream
- D flush 10I 0 value Flush type required
- *
- D inflateEnd PR 10I 0 extproc('inflateEnd') Termin. expansion
- D strm like(z_stream) Expansion stream
- *
- **************************************************************************
- * Advanced function prototypes
- **************************************************************************
- *
- D deflateInit2 PR 10I 0 extproc('deflateInit2_') Init. compression
- D strm like(z_stream) Compression stream
- D level 10I 0 value Compression level
- D method 10I 0 value Compression method
- D windowBits 10I 0 value log2(window size)
- D memLevel 10I 0 value Mem/cmpress tradeoff
- D strategy 10I 0 value Compression stategy
- D version * value options(*string) Version string
- D stream_size 10i 0 value Stream struct. size
- *
- D deflateSetDictionary...
- D PR 10I 0 extproc('deflateSetDictionary') Init. dictionary
- D strm like(z_stream) Compression stream
- D dictionary 32767 const options(*varsize) Dictionary bytes
- D dictLength 10U 0 value Dictionary length
- *
- D deflateCopy PR 10I 0 extproc('deflateCopy') Compress strm 2 strm
- D dest like(z_stream) Destination stream
- D source like(z_stream) Source stream
- *
- D deflateReset PR 10I 0 extproc('deflateReset') End and init. stream
- D strm like(z_stream) Compression stream
- *
- D deflateParams PR 10I 0 extproc('deflateParams') Change level & strat
- D strm like(z_stream) Compression stream
- D level 10I 0 value Compression level
- D strategy 10I 0 value Compression stategy
- *
- D deflateBound PR 10U 0 extproc('deflateBound') Change level & strat
- D strm like(z_stream) Compression stream
- D sourcelen 10U 0 value Compression level
- *
- D deflatePrime PR 10I 0 extproc('deflatePrime') Change level & strat
- D strm like(z_stream) Compression stream
- D bits 10I 0 value Number of bits to insert
- D value 10I 0 value Bits to insert
- *
- D inflateInit2 PR 10I 0 extproc('inflateInit2_') Init. expansion
- D strm like(z_stream) Expansion stream
- D windowBits 10I 0 value log2(window size)
- D version * value options(*string) Version string
- D stream_size 10i 0 value Stream struct. size
- *
- D inflateSetDictionary...
- D PR 10I 0 extproc('inflateSetDictionary') Init. dictionary
- D strm like(z_stream) Expansion stream
- D dictionary 32767 const options(*varsize) Dictionary bytes
- D dictLength 10U 0 value Dictionary length
- *
- D inflateSync PR 10I 0 extproc('inflateSync') Sync. expansion
- D strm like(z_stream) Expansion stream
- *
- D inflateCopy PR 10I 0 extproc('inflateCopy')
- D dest like(z_stream) Destination stream
- D source like(z_stream) Source stream
- *
- D inflateReset PR 10I 0 extproc('inflateReset') End and init. stream
- D strm like(z_stream) Expansion stream
- *
- D inflateBackInit...
- D PR 10I 0 extproc('inflateBackInit_')
- D strm like(z_stream) Expansion stream
- D windowBits 10I 0 value Log2(buffer size)
- D window 32767 options(*varsize) Buffer
- D version * value options(*string) Version string
- D stream_size 10i 0 value Stream struct. size
- *
- D inflateBack PR 10I 0 extproc('inflateBack')
- D strm like(z_stream) Expansion stream
- D in * value procptr Input function
- D in_desc * value Input descriptor
- D out * value procptr Output function
- D out_desc * value Output descriptor
- *
- D inflateBackEnd PR 10I 0 extproc('inflateBackEnd')
- D strm like(z_stream) Expansion stream
- *
- D zlibCompileFlags...
- D PR 10U 0 extproc('zlibCompileFlags')
- *
- **************************************************************************
- * Checksum function prototypes
- **************************************************************************
- *
- D adler32 PR 10U 0 extproc('adler32') New checksum
- D adler 10U 0 value Old checksum
- D buf 32767 const options(*varsize) Bytes to accumulate
- D len 10U 0 value Buffer length
- *
- D crc32 PR 10U 0 extproc('crc32') New checksum
- D crc 10U 0 value Old checksum
- D buf 32767 const options(*varsize) Bytes to accumulate
- D len 10U 0 value Buffer length
- *
- **************************************************************************
- * Miscellaneous function prototypes
- **************************************************************************
- *
- D zError PR * extproc('zError') Error string
- D err 10I 0 value Error code
- *
- D inflateSyncPoint...
- D PR 10I 0 extproc('inflateSyncPoint')
- D strm like(z_stream) Expansion stream
- *
- D get_crc_table PR * extproc('get_crc_table') Ptr to ulongs
- *
- /endif
+++ /dev/null
-/* compress.c -- compress a memory buffer
- * Copyright (C) 1995-2003 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-
-/* ===========================================================================
- Compresses the source buffer into the destination buffer. The level
- parameter has the same meaning as in deflateInit. sourceLen is the byte
- length of the source buffer. Upon entry, destLen is the total size of the
- destination buffer, which must be at least 0.1% larger than sourceLen plus
- 12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
-
- compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_BUF_ERROR if there was not enough room in the output buffer,
- Z_STREAM_ERROR if the level parameter is invalid.
-*/
-int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
- int level;
-{
- z_stream stream;
- int err;
-
- stream.next_in = source;
- stream.avail_in = (uInt)sourceLen;
-#ifdef MAXSEG_64K
- /* Check for source > 64K on 16-bit machine: */
- if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
-#endif
- stream.next_out = dest;
- stream.avail_out = (uInt)*destLen;
- if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
-
- stream.zalloc = (alloc_func)0;
- stream.zfree = (free_func)0;
- stream.opaque = (voidpf)0;
-
- err = deflateInit(&stream, level);
- if (err != Z_OK) return err;
-
- err = deflate(&stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- deflateEnd(&stream);
- return err == Z_OK ? Z_BUF_ERROR : err;
- }
- *destLen = stream.total_out;
-
- err = deflateEnd(&stream);
- return err;
-}
-
-/* ===========================================================================
- */
-int ZEXPORT compress (dest, destLen, source, sourceLen)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
-{
- return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
-}
-
-/* ===========================================================================
- If the default memLevel or windowBits for deflateInit() is changed, then
- this function needs to be updated.
- */
-uLong ZEXPORT compressBound (sourceLen)
- uLong sourceLen;
-{
- return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11;
-}
+++ /dev/null
-All files under this contrib directory are UNSUPPORTED. There were
-provided by users of zlib and were not tested by the authors of zlib.
-Use at your own risk. Please contact the authors of the contributions
-for help about these, not the zlib authors. Thanks.
-
-
-ada/ by Dmitriy Anisimkov <anisimkov@yahoo.com>
- Support for Ada
- See http://zlib-ada.sourceforge.net/
-
-asm586/
-asm686/ by Brian Raiter <breadbox@muppetlabs.com>
- asm code for Pentium and PPro/PII, using the AT&T (GNU as) syntax
- See http://www.muppetlabs.com/~breadbox/software/assembly.html
-
-blast/ by Mark Adler <madler@alumni.caltech.edu>
- Decompressor for output of PKWare Data Compression Library (DCL)
-
-delphi/ by Cosmin Truta <cosmint@cs.ubbcluj.ro>
- Support for Delphi and C++ Builder
-
-dotzlib/ by Henrik Ravn <henrik@ravn.com>
- Support for Microsoft .Net and Visual C++ .Net
-
-infback9/ by Mark Adler <madler@alumni.caltech.edu>
- Unsupported diffs to infback to decode the deflate64 format
-
-inflate86/ by Chris Anderson <christop@charm.net>
- Tuned x86 gcc asm code to replace inflate_fast()
-
-iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
- A C++ I/O streams interface to the zlib gz* functions
-
-iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no>
- Another C++ I/O streams interface
-
-iostream3/ by Ludwig Schwardt <schwardt@sun.ac.za>
- and Kevin Ruland <kevin@rodin.wustl.edu>
- Yet another C++ I/O streams interface
-
-masm686/ by Dan Higdon <hdan@kinesoft.com>
- and Chuck Walbourn <chuckw@kinesoft.com>
- asm code for Pentium Pro/PII, using the MASM syntax
-
-masmx64/ by Gilles Vollant <info@winimage.com>
- x86 64-bit (AMD64 and Intel EM64t) code for x64 assembler to
- replace longest_match() and inflate_fast()
-
-masmx86/ by Gilles Vollant <info@winimage.com>
- x86 asm code to replace longest_match() and inflate_fast(),
- for Visual C++ and MASM
-
-minizip/ by Gilles Vollant <info@winimage.com>
- Mini zip and unzip based on zlib
- See http://www.winimage.com/zLibDll/unzip.html
-
-pascal/ by Bob Dellaca <bobdl@xtra.co.nz> et al.
- Support for Pascal
-
-puff/ by Mark Adler <madler@alumni.caltech.edu>
- Small, low memory usage inflate. Also serves to provide an
- unambiguous description of the deflate format.
-
-testzlib/ by Gilles Vollant <info@winimage.com>
- Example of the use of zlib
-
-untgz/ by Pedro A. Aranda Gutierrez <paag@tid.es>
- A very simple tar.gz file extractor using zlib
-
-vstudio/ by Gilles Vollant <info@winimage.com>
- Building a minizip-enhanced zlib with Microsoft Visual Studio
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2004 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
---
--- $Id: buffer_demo.adb,v 1.3 2004/09/06 06:55:35 vagul Exp $
-
--- This demo program provided by Dr Steve Sangwine <sjs@essex.ac.uk>
---
--- Demonstration of a problem with Zlib-Ada (already fixed) when a buffer
--- of exactly the correct size is used for decompressed data, and the last
--- few bytes passed in to Zlib are checksum bytes.
-
--- This program compresses a string of text, and then decompresses the
--- compressed text into a buffer of the same size as the original text.
-
-with Ada.Streams; use Ada.Streams;
-with Ada.Text_IO;
-
-with ZLib; use ZLib;
-
-procedure Buffer_Demo is
- EOL : Character renames ASCII.LF;
- Text : constant String
- := "Four score and seven years ago our fathers brought forth," & EOL &
- "upon this continent, a new nation, conceived in liberty," & EOL &
- "and dedicated to the proposition that `all men are created equal'.";
-
- Source : Stream_Element_Array (1 .. Text'Length);
- for Source'Address use Text'Address;
-
-begin
- Ada.Text_IO.Put (Text);
- Ada.Text_IO.New_Line;
- Ada.Text_IO.Put_Line
- ("Uncompressed size : " & Positive'Image (Text'Length) & " bytes");
-
- declare
- Compressed_Data : Stream_Element_Array (1 .. Text'Length);
- L : Stream_Element_Offset;
- begin
- Compress : declare
- Compressor : Filter_Type;
- I : Stream_Element_Offset;
- begin
- Deflate_Init (Compressor);
-
- -- Compress the whole of T at once.
-
- Translate (Compressor, Source, I, Compressed_Data, L, Finish);
- pragma Assert (I = Source'Last);
-
- Close (Compressor);
-
- Ada.Text_IO.Put_Line
- ("Compressed size : "
- & Stream_Element_Offset'Image (L) & " bytes");
- end Compress;
-
- -- Now we decompress the data, passing short blocks of data to Zlib
- -- (because this demonstrates the problem - the last block passed will
- -- contain checksum information and there will be no output, only a
- -- check inside Zlib that the checksum is correct).
-
- Decompress : declare
- Decompressor : Filter_Type;
-
- Uncompressed_Data : Stream_Element_Array (1 .. Text'Length);
-
- Block_Size : constant := 4;
- -- This makes sure that the last block contains
- -- only Adler checksum data.
-
- P : Stream_Element_Offset := Compressed_Data'First - 1;
- O : Stream_Element_Offset;
- begin
- Inflate_Init (Decompressor);
-
- loop
- Translate
- (Decompressor,
- Compressed_Data
- (P + 1 .. Stream_Element_Offset'Min (P + Block_Size, L)),
- P,
- Uncompressed_Data
- (Total_Out (Decompressor) + 1 .. Uncompressed_Data'Last),
- O,
- No_Flush);
-
- Ada.Text_IO.Put_Line
- ("Total in : " & Count'Image (Total_In (Decompressor)) &
- ", out : " & Count'Image (Total_Out (Decompressor)));
-
- exit when P = L;
- end loop;
-
- Ada.Text_IO.New_Line;
- Ada.Text_IO.Put_Line
- ("Decompressed text matches original text : "
- & Boolean'Image (Uncompressed_Data = Source));
- end Decompress;
- end;
-end Buffer_Demo;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
--- Continuous test for ZLib multithreading. If the test would fail
--- we should provide thread safe allocation routines for the Z_Stream.
---
--- $Id: mtest.adb,v 1.4 2004/07/23 07:49:54 vagul Exp $
-
-with ZLib;
-with Ada.Streams;
-with Ada.Numerics.Discrete_Random;
-with Ada.Text_IO;
-with Ada.Exceptions;
-with Ada.Task_Identification;
-
-procedure MTest is
- use Ada.Streams;
- use ZLib;
-
- Stop : Boolean := False;
-
- pragma Atomic (Stop);
-
- subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
-
- package Random_Elements is
- new Ada.Numerics.Discrete_Random (Visible_Symbols);
-
- task type Test_Task;
-
- task body Test_Task is
- Buffer : Stream_Element_Array (1 .. 100_000);
- Gen : Random_Elements.Generator;
-
- Buffer_First : Stream_Element_Offset;
- Compare_First : Stream_Element_Offset;
-
- Deflate : Filter_Type;
- Inflate : Filter_Type;
-
- procedure Further (Item : in Stream_Element_Array);
-
- procedure Read_Buffer
- (Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset);
-
- -------------
- -- Further --
- -------------
-
- procedure Further (Item : in Stream_Element_Array) is
-
- procedure Compare (Item : in Stream_Element_Array);
-
- -------------
- -- Compare --
- -------------
-
- procedure Compare (Item : in Stream_Element_Array) is
- Next_First : Stream_Element_Offset := Compare_First + Item'Length;
- begin
- if Buffer (Compare_First .. Next_First - 1) /= Item then
- raise Program_Error;
- end if;
-
- Compare_First := Next_First;
- end Compare;
-
- procedure Compare_Write is new ZLib.Write (Write => Compare);
- begin
- Compare_Write (Inflate, Item, No_Flush);
- end Further;
-
- -----------------
- -- Read_Buffer --
- -----------------
-
- procedure Read_Buffer
- (Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset)
- is
- Buff_Diff : Stream_Element_Offset := Buffer'Last - Buffer_First;
- Next_First : Stream_Element_Offset;
- begin
- if Item'Length <= Buff_Diff then
- Last := Item'Last;
-
- Next_First := Buffer_First + Item'Length;
-
- Item := Buffer (Buffer_First .. Next_First - 1);
-
- Buffer_First := Next_First;
- else
- Last := Item'First + Buff_Diff;
- Item (Item'First .. Last) := Buffer (Buffer_First .. Buffer'Last);
- Buffer_First := Buffer'Last + 1;
- end if;
- end Read_Buffer;
-
- procedure Translate is new Generic_Translate
- (Data_In => Read_Buffer,
- Data_Out => Further);
-
- begin
- Random_Elements.Reset (Gen);
-
- Buffer := (others => 20);
-
- Main : loop
- for J in Buffer'Range loop
- Buffer (J) := Random_Elements.Random (Gen);
-
- Deflate_Init (Deflate);
- Inflate_Init (Inflate);
-
- Buffer_First := Buffer'First;
- Compare_First := Buffer'First;
-
- Translate (Deflate);
-
- if Compare_First /= Buffer'Last + 1 then
- raise Program_Error;
- end if;
-
- Ada.Text_IO.Put_Line
- (Ada.Task_Identification.Image
- (Ada.Task_Identification.Current_Task)
- & Stream_Element_Offset'Image (J)
- & ZLib.Count'Image (Total_Out (Deflate)));
-
- Close (Deflate);
- Close (Inflate);
-
- exit Main when Stop;
- end loop;
- end loop Main;
- exception
- when E : others =>
- Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
- Stop := True;
- end Test_Task;
-
- Test : array (1 .. 4) of Test_Task;
-
- pragma Unreferenced (Test);
-
- Dummy : Character;
-
-begin
- Ada.Text_IO.Get_Immediate (Dummy);
- Stop := True;
-end MTest;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: read.adb,v 1.8 2004/05/31 10:53:40 vagul Exp $
-
--- Test/demo program for the generic read interface.
-
-with Ada.Numerics.Discrete_Random;
-with Ada.Streams;
-with Ada.Text_IO;
-
-with ZLib;
-
-procedure Read is
-
- use Ada.Streams;
-
- ------------------------------------
- -- Test configuration parameters --
- ------------------------------------
-
- File_Size : Stream_Element_Offset := 100_000;
-
- Continuous : constant Boolean := False;
- -- If this constant is True, the test would be repeated again and again,
- -- with increment File_Size for every iteration.
-
- Header : constant ZLib.Header_Type := ZLib.Default;
- -- Do not use Header other than Default in ZLib versions 1.1.4 and older.
-
- Init_Random : constant := 8;
- -- We are using the same random sequence, in case of we catch bug,
- -- so we would be able to reproduce it.
-
- -- End --
-
- Pack_Size : Stream_Element_Offset;
- Offset : Stream_Element_Offset;
-
- Filter : ZLib.Filter_Type;
-
- subtype Visible_Symbols
- is Stream_Element range 16#20# .. 16#7E#;
-
- package Random_Elements is new
- Ada.Numerics.Discrete_Random (Visible_Symbols);
-
- Gen : Random_Elements.Generator;
- Period : constant Stream_Element_Offset := 200;
- -- Period constant variable for random generator not to be very random.
- -- Bigger period, harder random.
-
- Read_Buffer : Stream_Element_Array (1 .. 2048);
- Read_First : Stream_Element_Offset;
- Read_Last : Stream_Element_Offset;
-
- procedure Reset;
-
- procedure Read
- (Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset);
- -- this procedure is for generic instantiation of
- -- ZLib.Read
- -- reading data from the File_In.
-
- procedure Read is new ZLib.Read
- (Read,
- Read_Buffer,
- Rest_First => Read_First,
- Rest_Last => Read_Last);
-
- ----------
- -- Read --
- ----------
-
- procedure Read
- (Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset) is
- begin
- Last := Stream_Element_Offset'Min
- (Item'Last,
- Item'First + File_Size - Offset);
-
- for J in Item'First .. Last loop
- if J < Item'First + Period then
- Item (J) := Random_Elements.Random (Gen);
- else
- Item (J) := Item (J - Period);
- end if;
-
- Offset := Offset + 1;
- end loop;
- end Read;
-
- -----------
- -- Reset --
- -----------
-
- procedure Reset is
- begin
- Random_Elements.Reset (Gen, Init_Random);
- Pack_Size := 0;
- Offset := 1;
- Read_First := Read_Buffer'Last + 1;
- Read_Last := Read_Buffer'Last;
- end Reset;
-
-begin
- Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
-
- loop
- for Level in ZLib.Compression_Level'Range loop
-
- Ada.Text_IO.Put ("Level ="
- & ZLib.Compression_Level'Image (Level));
-
- -- Deflate using generic instantiation.
-
- ZLib.Deflate_Init
- (Filter,
- Level,
- Header => Header);
-
- Reset;
-
- Ada.Text_IO.Put
- (Stream_Element_Offset'Image (File_Size) & " ->");
-
- loop
- declare
- Buffer : Stream_Element_Array (1 .. 1024);
- Last : Stream_Element_Offset;
- begin
- Read (Filter, Buffer, Last);
-
- Pack_Size := Pack_Size + Last - Buffer'First + 1;
-
- exit when Last < Buffer'Last;
- end;
- end loop;
-
- Ada.Text_IO.Put_Line (Stream_Element_Offset'Image (Pack_Size));
-
- ZLib.Close (Filter);
- end loop;
-
- exit when not Continuous;
-
- File_Size := File_Size + 1;
- end loop;
-end Read;
+++ /dev/null
- ZLib for Ada thick binding (ZLib.Ada)
- Release 1.3
-
-ZLib.Ada is a thick binding interface to the popular ZLib data
-compression library, available at http://www.gzip.org/zlib/.
-It provides Ada-style access to the ZLib C library.
-
-
- Here are the main changes since ZLib.Ada 1.2:
-
-- Attension: ZLib.Read generic routine have a initialization requirement
- for Read_Last parameter now. It is a bit incompartible with previous version,
- but extends functionality, we could use new parameters Allow_Read_Some and
- Flush now.
-
-- Added Is_Open routines to ZLib and ZLib.Streams packages.
-
-- Add pragma Assert to check Stream_Element is 8 bit.
-
-- Fix extraction to buffer with exact known decompressed size. Error reported by
- Steve Sangwine.
-
-- Fix definition of ULong (changed to unsigned_long), fix regression on 64 bits
- computers. Patch provided by Pascal Obry.
-
-- Add Status_Error exception definition.
-
-- Add pragma Assertion that Ada.Streams.Stream_Element size is 8 bit.
-
-
- How to build ZLib.Ada under GNAT
-
-You should have the ZLib library already build on your computer, before
-building ZLib.Ada. Make the directory of ZLib.Ada sources current and
-issue the command:
-
- gnatmake test -largs -L<directory where libz.a is> -lz
-
-Or use the GNAT project file build for GNAT 3.15 or later:
-
- gnatmake -Pzlib.gpr -L<directory where libz.a is>
-
-
- How to build ZLib.Ada under Aonix ObjectAda for Win32 7.2.2
-
-1. Make a project with all *.ads and *.adb files from the distribution.
-2. Build the libz.a library from the ZLib C sources.
-3. Rename libz.a to z.lib.
-4. Add the library z.lib to the project.
-5. Add the libc.lib library from the ObjectAda distribution to the project.
-6. Build the executable using test.adb as a main procedure.
-
-
- How to use ZLib.Ada
-
-The source files test.adb and read.adb are small demo programs that show
-the main functionality of ZLib.Ada.
-
-The routines from the package specifications are commented.
-
-
-Homepage: http://zlib-ada.sourceforge.net/
-Author: Dmitriy Anisimkov <anisimkov@yahoo.com>
-
-Contributors: Pascal Obry <pascal@obry.org>, Steve Sangwine <sjs@essex.ac.uk>
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: test.adb,v 1.17 2003/08/12 12:13:30 vagul Exp $
-
--- The program has a few aims.
--- 1. Test ZLib.Ada95 thick binding functionality.
--- 2. Show the example of use main functionality of the ZLib.Ada95 binding.
--- 3. Build this program automatically compile all ZLib.Ada95 packages under
--- GNAT Ada95 compiler.
-
-with ZLib.Streams;
-with Ada.Streams.Stream_IO;
-with Ada.Numerics.Discrete_Random;
-
-with Ada.Text_IO;
-
-with Ada.Calendar;
-
-procedure Test is
-
- use Ada.Streams;
- use Stream_IO;
-
- ------------------------------------
- -- Test configuration parameters --
- ------------------------------------
-
- File_Size : Count := 100_000;
- Continuous : constant Boolean := False;
-
- Header : constant ZLib.Header_Type := ZLib.Default;
- -- ZLib.None;
- -- ZLib.Auto;
- -- ZLib.GZip;
- -- Do not use Header other then Default in ZLib versions 1.1.4
- -- and older.
-
- Strategy : constant ZLib.Strategy_Type := ZLib.Default_Strategy;
- Init_Random : constant := 10;
-
- -- End --
-
- In_File_Name : constant String := "testzlib.in";
- -- Name of the input file
-
- Z_File_Name : constant String := "testzlib.zlb";
- -- Name of the compressed file.
-
- Out_File_Name : constant String := "testzlib.out";
- -- Name of the decompressed file.
-
- File_In : File_Type;
- File_Out : File_Type;
- File_Back : File_Type;
- File_Z : ZLib.Streams.Stream_Type;
-
- Filter : ZLib.Filter_Type;
-
- Time_Stamp : Ada.Calendar.Time;
-
- procedure Generate_File;
- -- Generate file of spetsified size with some random data.
- -- The random data is repeatable, for the good compression.
-
- procedure Compare_Streams
- (Left, Right : in out Root_Stream_Type'Class);
- -- The procedure compearing data in 2 streams.
- -- It is for compare data before and after compression/decompression.
-
- procedure Compare_Files (Left, Right : String);
- -- Compare files. Based on the Compare_Streams.
-
- procedure Copy_Streams
- (Source, Target : in out Root_Stream_Type'Class;
- Buffer_Size : in Stream_Element_Offset := 1024);
- -- Copying data from one stream to another. It is for test stream
- -- interface of the library.
-
- procedure Data_In
- (Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset);
- -- this procedure is for generic instantiation of
- -- ZLib.Generic_Translate.
- -- reading data from the File_In.
-
- procedure Data_Out (Item : in Stream_Element_Array);
- -- this procedure is for generic instantiation of
- -- ZLib.Generic_Translate.
- -- writing data to the File_Out.
-
- procedure Stamp;
- -- Store the timestamp to the local variable.
-
- procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count);
- -- Print the time statistic with the message.
-
- procedure Translate is new ZLib.Generic_Translate
- (Data_In => Data_In,
- Data_Out => Data_Out);
- -- This procedure is moving data from File_In to File_Out
- -- with compression or decompression, depend on initialization of
- -- Filter parameter.
-
- -------------------
- -- Compare_Files --
- -------------------
-
- procedure Compare_Files (Left, Right : String) is
- Left_File, Right_File : File_Type;
- begin
- Open (Left_File, In_File, Left);
- Open (Right_File, In_File, Right);
- Compare_Streams (Stream (Left_File).all, Stream (Right_File).all);
- Close (Left_File);
- Close (Right_File);
- end Compare_Files;
-
- ---------------------
- -- Compare_Streams --
- ---------------------
-
- procedure Compare_Streams
- (Left, Right : in out Ada.Streams.Root_Stream_Type'Class)
- is
- Left_Buffer, Right_Buffer : Stream_Element_Array (0 .. 16#FFF#);
- Left_Last, Right_Last : Stream_Element_Offset;
- begin
- loop
- Read (Left, Left_Buffer, Left_Last);
- Read (Right, Right_Buffer, Right_Last);
-
- if Left_Last /= Right_Last then
- Ada.Text_IO.Put_Line ("Compare error :"
- & Stream_Element_Offset'Image (Left_Last)
- & " /= "
- & Stream_Element_Offset'Image (Right_Last));
-
- raise Constraint_Error;
-
- elsif Left_Buffer (0 .. Left_Last)
- /= Right_Buffer (0 .. Right_Last)
- then
- Ada.Text_IO.Put_Line ("ERROR: IN and OUT files is not equal.");
- raise Constraint_Error;
-
- end if;
-
- exit when Left_Last < Left_Buffer'Last;
- end loop;
- end Compare_Streams;
-
- ------------------
- -- Copy_Streams --
- ------------------
-
- procedure Copy_Streams
- (Source, Target : in out Ada.Streams.Root_Stream_Type'Class;
- Buffer_Size : in Stream_Element_Offset := 1024)
- is
- Buffer : Stream_Element_Array (1 .. Buffer_Size);
- Last : Stream_Element_Offset;
- begin
- loop
- Read (Source, Buffer, Last);
- Write (Target, Buffer (1 .. Last));
-
- exit when Last < Buffer'Last;
- end loop;
- end Copy_Streams;
-
- -------------
- -- Data_In --
- -------------
-
- procedure Data_In
- (Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset) is
- begin
- Read (File_In, Item, Last);
- end Data_In;
-
- --------------
- -- Data_Out --
- --------------
-
- procedure Data_Out (Item : in Stream_Element_Array) is
- begin
- Write (File_Out, Item);
- end Data_Out;
-
- -------------------
- -- Generate_File --
- -------------------
-
- procedure Generate_File is
- subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
-
- package Random_Elements is
- new Ada.Numerics.Discrete_Random (Visible_Symbols);
-
- Gen : Random_Elements.Generator;
- Buffer : Stream_Element_Array := (1 .. 77 => 16#20#) & 10;
-
- Buffer_Count : constant Count := File_Size / Buffer'Length;
- -- Number of same buffers in the packet.
-
- Density : constant Count := 30; -- from 0 to Buffer'Length - 2;
-
- procedure Fill_Buffer (J, D : in Count);
- -- Change the part of the buffer.
-
- -----------------
- -- Fill_Buffer --
- -----------------
-
- procedure Fill_Buffer (J, D : in Count) is
- begin
- for K in 0 .. D loop
- Buffer
- (Stream_Element_Offset ((J + K) mod (Buffer'Length - 1) + 1))
- := Random_Elements.Random (Gen);
-
- end loop;
- end Fill_Buffer;
-
- begin
- Random_Elements.Reset (Gen, Init_Random);
-
- Create (File_In, Out_File, In_File_Name);
-
- Fill_Buffer (1, Buffer'Length - 2);
-
- for J in 1 .. Buffer_Count loop
- Write (File_In, Buffer);
-
- Fill_Buffer (J, Density);
- end loop;
-
- -- fill remain size.
-
- Write
- (File_In,
- Buffer
- (1 .. Stream_Element_Offset
- (File_Size - Buffer'Length * Buffer_Count)));
-
- Flush (File_In);
- Close (File_In);
- end Generate_File;
-
- ---------------------
- -- Print_Statistic --
- ---------------------
-
- procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count) is
- use Ada.Calendar;
- use Ada.Text_IO;
-
- package Count_IO is new Integer_IO (ZLib.Count);
-
- Curr_Dur : Duration := Clock - Time_Stamp;
- begin
- Put (Msg);
-
- Set_Col (20);
- Ada.Text_IO.Put ("size =");
-
- Count_IO.Put
- (Data_Size,
- Width => Stream_IO.Count'Image (File_Size)'Length);
-
- Put_Line (" duration =" & Duration'Image (Curr_Dur));
- end Print_Statistic;
-
- -----------
- -- Stamp --
- -----------
-
- procedure Stamp is
- begin
- Time_Stamp := Ada.Calendar.Clock;
- end Stamp;
-
-begin
- Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
-
- loop
- Generate_File;
-
- for Level in ZLib.Compression_Level'Range loop
-
- Ada.Text_IO.Put_Line ("Level ="
- & ZLib.Compression_Level'Image (Level));
-
- -- Test generic interface.
- Open (File_In, In_File, In_File_Name);
- Create (File_Out, Out_File, Z_File_Name);
-
- Stamp;
-
- -- Deflate using generic instantiation.
-
- ZLib.Deflate_Init
- (Filter => Filter,
- Level => Level,
- Strategy => Strategy,
- Header => Header);
-
- Translate (Filter);
- Print_Statistic ("Generic compress", ZLib.Total_Out (Filter));
- ZLib.Close (Filter);
-
- Close (File_In);
- Close (File_Out);
-
- Open (File_In, In_File, Z_File_Name);
- Create (File_Out, Out_File, Out_File_Name);
-
- Stamp;
-
- -- Inflate using generic instantiation.
-
- ZLib.Inflate_Init (Filter, Header => Header);
-
- Translate (Filter);
- Print_Statistic ("Generic decompress", ZLib.Total_Out (Filter));
-
- ZLib.Close (Filter);
-
- Close (File_In);
- Close (File_Out);
-
- Compare_Files (In_File_Name, Out_File_Name);
-
- -- Test stream interface.
-
- -- Compress to the back stream.
-
- Open (File_In, In_File, In_File_Name);
- Create (File_Back, Out_File, Z_File_Name);
-
- Stamp;
-
- ZLib.Streams.Create
- (Stream => File_Z,
- Mode => ZLib.Streams.Out_Stream,
- Back => ZLib.Streams.Stream_Access
- (Stream (File_Back)),
- Back_Compressed => True,
- Level => Level,
- Strategy => Strategy,
- Header => Header);
-
- Copy_Streams
- (Source => Stream (File_In).all,
- Target => File_Z);
-
- -- Flushing internal buffers to the back stream.
-
- ZLib.Streams.Flush (File_Z, ZLib.Finish);
-
- Print_Statistic ("Write compress",
- ZLib.Streams.Write_Total_Out (File_Z));
-
- ZLib.Streams.Close (File_Z);
-
- Close (File_In);
- Close (File_Back);
-
- -- Compare reading from original file and from
- -- decompression stream.
-
- Open (File_In, In_File, In_File_Name);
- Open (File_Back, In_File, Z_File_Name);
-
- ZLib.Streams.Create
- (Stream => File_Z,
- Mode => ZLib.Streams.In_Stream,
- Back => ZLib.Streams.Stream_Access
- (Stream (File_Back)),
- Back_Compressed => True,
- Header => Header);
-
- Stamp;
- Compare_Streams (Stream (File_In).all, File_Z);
-
- Print_Statistic ("Read decompress",
- ZLib.Streams.Read_Total_Out (File_Z));
-
- ZLib.Streams.Close (File_Z);
- Close (File_In);
- Close (File_Back);
-
- -- Compress by reading from compression stream.
-
- Open (File_Back, In_File, In_File_Name);
- Create (File_Out, Out_File, Z_File_Name);
-
- ZLib.Streams.Create
- (Stream => File_Z,
- Mode => ZLib.Streams.In_Stream,
- Back => ZLib.Streams.Stream_Access
- (Stream (File_Back)),
- Back_Compressed => False,
- Level => Level,
- Strategy => Strategy,
- Header => Header);
-
- Stamp;
- Copy_Streams
- (Source => File_Z,
- Target => Stream (File_Out).all);
-
- Print_Statistic ("Read compress",
- ZLib.Streams.Read_Total_Out (File_Z));
-
- ZLib.Streams.Close (File_Z);
-
- Close (File_Out);
- Close (File_Back);
-
- -- Decompress to decompression stream.
-
- Open (File_In, In_File, Z_File_Name);
- Create (File_Back, Out_File, Out_File_Name);
-
- ZLib.Streams.Create
- (Stream => File_Z,
- Mode => ZLib.Streams.Out_Stream,
- Back => ZLib.Streams.Stream_Access
- (Stream (File_Back)),
- Back_Compressed => False,
- Header => Header);
-
- Stamp;
-
- Copy_Streams
- (Source => Stream (File_In).all,
- Target => File_Z);
-
- Print_Statistic ("Write decompress",
- ZLib.Streams.Write_Total_Out (File_Z));
-
- ZLib.Streams.Close (File_Z);
- Close (File_In);
- Close (File_Back);
-
- Compare_Files (In_File_Name, Out_File_Name);
- end loop;
-
- Ada.Text_IO.Put_Line (Count'Image (File_Size) & " Ok.");
-
- exit when not Continuous;
-
- File_Size := File_Size + 1;
- end loop;
-end Test;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: zlib-streams.adb,v 1.10 2004/05/31 10:53:40 vagul Exp $
-
-with Ada.Unchecked_Deallocation;
-
-package body ZLib.Streams is
-
- -----------
- -- Close --
- -----------
-
- procedure Close (Stream : in out Stream_Type) is
- procedure Free is new Ada.Unchecked_Deallocation
- (Stream_Element_Array, Buffer_Access);
- begin
- if Stream.Mode = Out_Stream or Stream.Mode = Duplex then
- -- We should flush the data written by the writer.
-
- Flush (Stream, Finish);
-
- Close (Stream.Writer);
- end if;
-
- if Stream.Mode = In_Stream or Stream.Mode = Duplex then
- Close (Stream.Reader);
- Free (Stream.Buffer);
- end if;
- end Close;
-
- ------------
- -- Create --
- ------------
-
- procedure Create
- (Stream : out Stream_Type;
- Mode : in Stream_Mode;
- Back : in Stream_Access;
- Back_Compressed : in Boolean;
- Level : in Compression_Level := Default_Compression;
- Strategy : in Strategy_Type := Default_Strategy;
- Header : in Header_Type := Default;
- Read_Buffer_Size : in Ada.Streams.Stream_Element_Offset
- := Default_Buffer_Size;
- Write_Buffer_Size : in Ada.Streams.Stream_Element_Offset
- := Default_Buffer_Size)
- is
-
- subtype Buffer_Subtype is Stream_Element_Array (1 .. Read_Buffer_Size);
-
- procedure Init_Filter
- (Filter : in out Filter_Type;
- Compress : in Boolean);
-
- -----------------
- -- Init_Filter --
- -----------------
-
- procedure Init_Filter
- (Filter : in out Filter_Type;
- Compress : in Boolean) is
- begin
- if Compress then
- Deflate_Init
- (Filter, Level, Strategy, Header => Header);
- else
- Inflate_Init (Filter, Header => Header);
- end if;
- end Init_Filter;
-
- begin
- Stream.Back := Back;
- Stream.Mode := Mode;
-
- if Mode = Out_Stream or Mode = Duplex then
- Init_Filter (Stream.Writer, Back_Compressed);
- Stream.Buffer_Size := Write_Buffer_Size;
- else
- Stream.Buffer_Size := 0;
- end if;
-
- if Mode = In_Stream or Mode = Duplex then
- Init_Filter (Stream.Reader, not Back_Compressed);
-
- Stream.Buffer := new Buffer_Subtype;
- Stream.Rest_First := Stream.Buffer'Last + 1;
- Stream.Rest_Last := Stream.Buffer'Last;
- end if;
- end Create;
-
- -----------
- -- Flush --
- -----------
-
- procedure Flush
- (Stream : in out Stream_Type;
- Mode : in Flush_Mode := Sync_Flush)
- is
- Buffer : Stream_Element_Array (1 .. Stream.Buffer_Size);
- Last : Stream_Element_Offset;
- begin
- loop
- Flush (Stream.Writer, Buffer, Last, Mode);
-
- Ada.Streams.Write (Stream.Back.all, Buffer (1 .. Last));
-
- exit when Last < Buffer'Last;
- end loop;
- end Flush;
-
- -------------
- -- Is_Open --
- -------------
-
- function Is_Open (Stream : Stream_Type) return Boolean is
- begin
- return Is_Open (Stream.Reader) or else Is_Open (Stream.Writer);
- end Is_Open;
-
- ----------
- -- Read --
- ----------
-
- procedure Read
- (Stream : in out Stream_Type;
- Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset)
- is
-
- procedure Read
- (Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset);
-
- ----------
- -- Read --
- ----------
-
- procedure Read
- (Item : out Stream_Element_Array;
- Last : out Stream_Element_Offset) is
- begin
- Ada.Streams.Read (Stream.Back.all, Item, Last);
- end Read;
-
- procedure Read is new ZLib.Read
- (Read => Read,
- Buffer => Stream.Buffer.all,
- Rest_First => Stream.Rest_First,
- Rest_Last => Stream.Rest_Last);
-
- begin
- Read (Stream.Reader, Item, Last);
- end Read;
-
- -------------------
- -- Read_Total_In --
- -------------------
-
- function Read_Total_In (Stream : in Stream_Type) return Count is
- begin
- return Total_In (Stream.Reader);
- end Read_Total_In;
-
- --------------------
- -- Read_Total_Out --
- --------------------
-
- function Read_Total_Out (Stream : in Stream_Type) return Count is
- begin
- return Total_Out (Stream.Reader);
- end Read_Total_Out;
-
- -----------
- -- Write --
- -----------
-
- procedure Write
- (Stream : in out Stream_Type;
- Item : in Stream_Element_Array)
- is
-
- procedure Write (Item : in Stream_Element_Array);
-
- -----------
- -- Write --
- -----------
-
- procedure Write (Item : in Stream_Element_Array) is
- begin
- Ada.Streams.Write (Stream.Back.all, Item);
- end Write;
-
- procedure Write is new ZLib.Write
- (Write => Write,
- Buffer_Size => Stream.Buffer_Size);
-
- begin
- Write (Stream.Writer, Item, No_Flush);
- end Write;
-
- --------------------
- -- Write_Total_In --
- --------------------
-
- function Write_Total_In (Stream : in Stream_Type) return Count is
- begin
- return Total_In (Stream.Writer);
- end Write_Total_In;
-
- ---------------------
- -- Write_Total_Out --
- ---------------------
-
- function Write_Total_Out (Stream : in Stream_Type) return Count is
- begin
- return Total_Out (Stream.Writer);
- end Write_Total_Out;
-
-end ZLib.Streams;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: zlib-streams.ads,v 1.12 2004/05/31 10:53:40 vagul Exp $
-
-package ZLib.Streams is
-
- type Stream_Mode is (In_Stream, Out_Stream, Duplex);
-
- type Stream_Access is access all Ada.Streams.Root_Stream_Type'Class;
-
- type Stream_Type is
- new Ada.Streams.Root_Stream_Type with private;
-
- procedure Read
- (Stream : in out Stream_Type;
- Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset);
-
- procedure Write
- (Stream : in out Stream_Type;
- Item : in Ada.Streams.Stream_Element_Array);
-
- procedure Flush
- (Stream : in out Stream_Type;
- Mode : in Flush_Mode := Sync_Flush);
- -- Flush the written data to the back stream,
- -- all data placed to the compressor is flushing to the Back stream.
- -- Should not be used untill necessary, because it is decreasing
- -- compression.
-
- function Read_Total_In (Stream : in Stream_Type) return Count;
- pragma Inline (Read_Total_In);
- -- Return total number of bytes read from back stream so far.
-
- function Read_Total_Out (Stream : in Stream_Type) return Count;
- pragma Inline (Read_Total_Out);
- -- Return total number of bytes read so far.
-
- function Write_Total_In (Stream : in Stream_Type) return Count;
- pragma Inline (Write_Total_In);
- -- Return total number of bytes written so far.
-
- function Write_Total_Out (Stream : in Stream_Type) return Count;
- pragma Inline (Write_Total_Out);
- -- Return total number of bytes written to the back stream.
-
- procedure Create
- (Stream : out Stream_Type;
- Mode : in Stream_Mode;
- Back : in Stream_Access;
- Back_Compressed : in Boolean;
- Level : in Compression_Level := Default_Compression;
- Strategy : in Strategy_Type := Default_Strategy;
- Header : in Header_Type := Default;
- Read_Buffer_Size : in Ada.Streams.Stream_Element_Offset
- := Default_Buffer_Size;
- Write_Buffer_Size : in Ada.Streams.Stream_Element_Offset
- := Default_Buffer_Size);
- -- Create the Comression/Decompression stream.
- -- If mode is In_Stream then Write operation is disabled.
- -- If mode is Out_Stream then Read operation is disabled.
-
- -- If Back_Compressed is true then
- -- Data written to the Stream is compressing to the Back stream
- -- and data read from the Stream is decompressed data from the Back stream.
-
- -- If Back_Compressed is false then
- -- Data written to the Stream is decompressing to the Back stream
- -- and data read from the Stream is compressed data from the Back stream.
-
- -- !!! When the Need_Header is False ZLib-Ada is using undocumented
- -- ZLib 1.1.4 functionality to do not create/wait for ZLib headers.
-
- function Is_Open (Stream : Stream_Type) return Boolean;
-
- procedure Close (Stream : in out Stream_Type);
-
-private
-
- use Ada.Streams;
-
- type Buffer_Access is access all Stream_Element_Array;
-
- type Stream_Type
- is new Root_Stream_Type with
- record
- Mode : Stream_Mode;
-
- Buffer : Buffer_Access;
- Rest_First : Stream_Element_Offset;
- Rest_Last : Stream_Element_Offset;
- -- Buffer for Read operation.
- -- We need to have this buffer in the record
- -- because not all read data from back stream
- -- could be processed during the read operation.
-
- Buffer_Size : Stream_Element_Offset;
- -- Buffer size for write operation.
- -- We do not need to have this buffer
- -- in the record because all data could be
- -- processed in the write operation.
-
- Back : Stream_Access;
- Reader : Filter_Type;
- Writer : Filter_Type;
- end record;
-
-end ZLib.Streams;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: zlib-thin.adb,v 1.8 2003/12/14 18:27:31 vagul Exp $
-
-package body ZLib.Thin is
-
- ZLIB_VERSION : constant Chars_Ptr := zlibVersion;
-
- Z_Stream_Size : constant Int := Z_Stream'Size / System.Storage_Unit;
-
- --------------
- -- Avail_In --
- --------------
-
- function Avail_In (Strm : in Z_Stream) return UInt is
- begin
- return Strm.Avail_In;
- end Avail_In;
-
- ---------------
- -- Avail_Out --
- ---------------
-
- function Avail_Out (Strm : in Z_Stream) return UInt is
- begin
- return Strm.Avail_Out;
- end Avail_Out;
-
- ------------------
- -- Deflate_Init --
- ------------------
-
- function Deflate_Init
- (strm : Z_Streamp;
- level : Int;
- method : Int;
- windowBits : Int;
- memLevel : Int;
- strategy : Int)
- return Int is
- begin
- return deflateInit2
- (strm,
- level,
- method,
- windowBits,
- memLevel,
- strategy,
- ZLIB_VERSION,
- Z_Stream_Size);
- end Deflate_Init;
-
- ------------------
- -- Inflate_Init --
- ------------------
-
- function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int is
- begin
- return inflateInit2 (strm, windowBits, ZLIB_VERSION, Z_Stream_Size);
- end Inflate_Init;
-
- ------------------------
- -- Last_Error_Message --
- ------------------------
-
- function Last_Error_Message (Strm : in Z_Stream) return String is
- use Interfaces.C.Strings;
- begin
- if Strm.msg = Null_Ptr then
- return "";
- else
- return Value (Strm.msg);
- end if;
- end Last_Error_Message;
-
- ------------
- -- Set_In --
- ------------
-
- procedure Set_In
- (Strm : in out Z_Stream;
- Buffer : in Voidp;
- Size : in UInt) is
- begin
- Strm.Next_In := Buffer;
- Strm.Avail_In := Size;
- end Set_In;
-
- ------------------
- -- Set_Mem_Func --
- ------------------
-
- procedure Set_Mem_Func
- (Strm : in out Z_Stream;
- Opaque : in Voidp;
- Alloc : in alloc_func;
- Free : in free_func) is
- begin
- Strm.opaque := Opaque;
- Strm.zalloc := Alloc;
- Strm.zfree := Free;
- end Set_Mem_Func;
-
- -------------
- -- Set_Out --
- -------------
-
- procedure Set_Out
- (Strm : in out Z_Stream;
- Buffer : in Voidp;
- Size : in UInt) is
- begin
- Strm.Next_Out := Buffer;
- Strm.Avail_Out := Size;
- end Set_Out;
-
- --------------
- -- Total_In --
- --------------
-
- function Total_In (Strm : in Z_Stream) return ULong is
- begin
- return Strm.Total_In;
- end Total_In;
-
- ---------------
- -- Total_Out --
- ---------------
-
- function Total_Out (Strm : in Z_Stream) return ULong is
- begin
- return Strm.Total_Out;
- end Total_Out;
-
-end ZLib.Thin;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2003 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: zlib-thin.ads,v 1.11 2004/07/23 06:33:11 vagul Exp $
-
-with Interfaces.C.Strings;
-
-with System;
-
-private package ZLib.Thin is
-
- -- From zconf.h
-
- MAX_MEM_LEVEL : constant := 9; -- zconf.h:105
- -- zconf.h:105
- MAX_WBITS : constant := 15; -- zconf.h:115
- -- 32K LZ77 window
- -- zconf.h:115
- SEEK_SET : constant := 8#0000#; -- zconf.h:244
- -- Seek from beginning of file.
- -- zconf.h:244
- SEEK_CUR : constant := 1; -- zconf.h:245
- -- Seek from current position.
- -- zconf.h:245
- SEEK_END : constant := 2; -- zconf.h:246
- -- Set file pointer to EOF plus "offset"
- -- zconf.h:246
-
- type Byte is new Interfaces.C.unsigned_char; -- 8 bits
- -- zconf.h:214
- type UInt is new Interfaces.C.unsigned; -- 16 bits or more
- -- zconf.h:216
- type Int is new Interfaces.C.int;
-
- type ULong is new Interfaces.C.unsigned_long; -- 32 bits or more
- -- zconf.h:217
- subtype Chars_Ptr is Interfaces.C.Strings.chars_ptr;
-
- type ULong_Access is access ULong;
- type Int_Access is access Int;
-
- subtype Voidp is System.Address; -- zconf.h:232
-
- subtype Byte_Access is Voidp;
-
- Nul : constant Voidp := System.Null_Address;
- -- end from zconf
-
- Z_NO_FLUSH : constant := 8#0000#; -- zlib.h:125
- -- zlib.h:125
- Z_PARTIAL_FLUSH : constant := 1; -- zlib.h:126
- -- will be removed, use
- -- Z_SYNC_FLUSH instead
- -- zlib.h:126
- Z_SYNC_FLUSH : constant := 2; -- zlib.h:127
- -- zlib.h:127
- Z_FULL_FLUSH : constant := 3; -- zlib.h:128
- -- zlib.h:128
- Z_FINISH : constant := 4; -- zlib.h:129
- -- zlib.h:129
- Z_OK : constant := 8#0000#; -- zlib.h:132
- -- zlib.h:132
- Z_STREAM_END : constant := 1; -- zlib.h:133
- -- zlib.h:133
- Z_NEED_DICT : constant := 2; -- zlib.h:134
- -- zlib.h:134
- Z_ERRNO : constant := -1; -- zlib.h:135
- -- zlib.h:135
- Z_STREAM_ERROR : constant := -2; -- zlib.h:136
- -- zlib.h:136
- Z_DATA_ERROR : constant := -3; -- zlib.h:137
- -- zlib.h:137
- Z_MEM_ERROR : constant := -4; -- zlib.h:138
- -- zlib.h:138
- Z_BUF_ERROR : constant := -5; -- zlib.h:139
- -- zlib.h:139
- Z_VERSION_ERROR : constant := -6; -- zlib.h:140
- -- zlib.h:140
- Z_NO_COMPRESSION : constant := 8#0000#; -- zlib.h:145
- -- zlib.h:145
- Z_BEST_SPEED : constant := 1; -- zlib.h:146
- -- zlib.h:146
- Z_BEST_COMPRESSION : constant := 9; -- zlib.h:147
- -- zlib.h:147
- Z_DEFAULT_COMPRESSION : constant := -1; -- zlib.h:148
- -- zlib.h:148
- Z_FILTERED : constant := 1; -- zlib.h:151
- -- zlib.h:151
- Z_HUFFMAN_ONLY : constant := 2; -- zlib.h:152
- -- zlib.h:152
- Z_DEFAULT_STRATEGY : constant := 8#0000#; -- zlib.h:153
- -- zlib.h:153
- Z_BINARY : constant := 8#0000#; -- zlib.h:156
- -- zlib.h:156
- Z_ASCII : constant := 1; -- zlib.h:157
- -- zlib.h:157
- Z_UNKNOWN : constant := 2; -- zlib.h:158
- -- zlib.h:158
- Z_DEFLATED : constant := 8; -- zlib.h:161
- -- zlib.h:161
- Z_NULL : constant := 8#0000#; -- zlib.h:164
- -- for initializing zalloc, zfree, opaque
- -- zlib.h:164
- type gzFile is new Voidp; -- zlib.h:646
-
- type Z_Stream is private;
-
- type Z_Streamp is access all Z_Stream; -- zlib.h:89
-
- type alloc_func is access function
- (Opaque : Voidp;
- Items : UInt;
- Size : UInt)
- return Voidp; -- zlib.h:63
-
- type free_func is access procedure (opaque : Voidp; address : Voidp);
-
- function zlibVersion return Chars_Ptr;
-
- function Deflate (strm : Z_Streamp; flush : Int) return Int;
-
- function DeflateEnd (strm : Z_Streamp) return Int;
-
- function Inflate (strm : Z_Streamp; flush : Int) return Int;
-
- function InflateEnd (strm : Z_Streamp) return Int;
-
- function deflateSetDictionary
- (strm : Z_Streamp;
- dictionary : Byte_Access;
- dictLength : UInt)
- return Int;
-
- function deflateCopy (dest : Z_Streamp; source : Z_Streamp) return Int;
- -- zlib.h:478
-
- function deflateReset (strm : Z_Streamp) return Int; -- zlib.h:495
-
- function deflateParams
- (strm : Z_Streamp;
- level : Int;
- strategy : Int)
- return Int; -- zlib.h:506
-
- function inflateSetDictionary
- (strm : Z_Streamp;
- dictionary : Byte_Access;
- dictLength : UInt)
- return Int; -- zlib.h:548
-
- function inflateSync (strm : Z_Streamp) return Int; -- zlib.h:565
-
- function inflateReset (strm : Z_Streamp) return Int; -- zlib.h:580
-
- function compress
- (dest : Byte_Access;
- destLen : ULong_Access;
- source : Byte_Access;
- sourceLen : ULong)
- return Int; -- zlib.h:601
-
- function compress2
- (dest : Byte_Access;
- destLen : ULong_Access;
- source : Byte_Access;
- sourceLen : ULong;
- level : Int)
- return Int; -- zlib.h:615
-
- function uncompress
- (dest : Byte_Access;
- destLen : ULong_Access;
- source : Byte_Access;
- sourceLen : ULong)
- return Int;
-
- function gzopen (path : Chars_Ptr; mode : Chars_Ptr) return gzFile;
-
- function gzdopen (fd : Int; mode : Chars_Ptr) return gzFile;
-
- function gzsetparams
- (file : gzFile;
- level : Int;
- strategy : Int)
- return Int;
-
- function gzread
- (file : gzFile;
- buf : Voidp;
- len : UInt)
- return Int;
-
- function gzwrite
- (file : in gzFile;
- buf : in Voidp;
- len : in UInt)
- return Int;
-
- function gzprintf (file : in gzFile; format : in Chars_Ptr) return Int;
-
- function gzputs (file : in gzFile; s : in Chars_Ptr) return Int;
-
- function gzgets
- (file : gzFile;
- buf : Chars_Ptr;
- len : Int)
- return Chars_Ptr;
-
- function gzputc (file : gzFile; char : Int) return Int;
-
- function gzgetc (file : gzFile) return Int;
-
- function gzflush (file : gzFile; flush : Int) return Int;
-
- function gzseek
- (file : gzFile;
- offset : Int;
- whence : Int)
- return Int;
-
- function gzrewind (file : gzFile) return Int;
-
- function gztell (file : gzFile) return Int;
-
- function gzeof (file : gzFile) return Int;
-
- function gzclose (file : gzFile) return Int;
-
- function gzerror (file : gzFile; errnum : Int_Access) return Chars_Ptr;
-
- function adler32
- (adler : ULong;
- buf : Byte_Access;
- len : UInt)
- return ULong;
-
- function crc32
- (crc : ULong;
- buf : Byte_Access;
- len : UInt)
- return ULong;
-
- function deflateInit
- (strm : Z_Streamp;
- level : Int;
- version : Chars_Ptr;
- stream_size : Int)
- return Int;
-
- function deflateInit2
- (strm : Z_Streamp;
- level : Int;
- method : Int;
- windowBits : Int;
- memLevel : Int;
- strategy : Int;
- version : Chars_Ptr;
- stream_size : Int)
- return Int;
-
- function Deflate_Init
- (strm : Z_Streamp;
- level : Int;
- method : Int;
- windowBits : Int;
- memLevel : Int;
- strategy : Int)
- return Int;
- pragma Inline (Deflate_Init);
-
- function inflateInit
- (strm : Z_Streamp;
- version : Chars_Ptr;
- stream_size : Int)
- return Int;
-
- function inflateInit2
- (strm : in Z_Streamp;
- windowBits : in Int;
- version : in Chars_Ptr;
- stream_size : in Int)
- return Int;
-
- function inflateBackInit
- (strm : in Z_Streamp;
- windowBits : in Int;
- window : in Byte_Access;
- version : in Chars_Ptr;
- stream_size : in Int)
- return Int;
- -- Size of window have to be 2**windowBits.
-
- function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int;
- pragma Inline (Inflate_Init);
-
- function zError (err : Int) return Chars_Ptr;
-
- function inflateSyncPoint (z : Z_Streamp) return Int;
-
- function get_crc_table return ULong_Access;
-
- -- Interface to the available fields of the z_stream structure.
- -- The application must update next_in and avail_in when avail_in has
- -- dropped to zero. It must update next_out and avail_out when avail_out
- -- has dropped to zero. The application must initialize zalloc, zfree and
- -- opaque before calling the init function.
-
- procedure Set_In
- (Strm : in out Z_Stream;
- Buffer : in Voidp;
- Size : in UInt);
- pragma Inline (Set_In);
-
- procedure Set_Out
- (Strm : in out Z_Stream;
- Buffer : in Voidp;
- Size : in UInt);
- pragma Inline (Set_Out);
-
- procedure Set_Mem_Func
- (Strm : in out Z_Stream;
- Opaque : in Voidp;
- Alloc : in alloc_func;
- Free : in free_func);
- pragma Inline (Set_Mem_Func);
-
- function Last_Error_Message (Strm : in Z_Stream) return String;
- pragma Inline (Last_Error_Message);
-
- function Avail_Out (Strm : in Z_Stream) return UInt;
- pragma Inline (Avail_Out);
-
- function Avail_In (Strm : in Z_Stream) return UInt;
- pragma Inline (Avail_In);
-
- function Total_In (Strm : in Z_Stream) return ULong;
- pragma Inline (Total_In);
-
- function Total_Out (Strm : in Z_Stream) return ULong;
- pragma Inline (Total_Out);
-
- function inflateCopy
- (dest : in Z_Streamp;
- Source : in Z_Streamp)
- return Int;
-
- function compressBound (Source_Len : in ULong) return ULong;
-
- function deflateBound
- (Strm : in Z_Streamp;
- Source_Len : in ULong)
- return ULong;
-
- function gzungetc (C : in Int; File : in gzFile) return Int;
-
- function zlibCompileFlags return ULong;
-
-private
-
- type Z_Stream is record -- zlib.h:68
- Next_In : Voidp := Nul; -- next input byte
- Avail_In : UInt := 0; -- number of bytes available at next_in
- Total_In : ULong := 0; -- total nb of input bytes read so far
- Next_Out : Voidp := Nul; -- next output byte should be put there
- Avail_Out : UInt := 0; -- remaining free space at next_out
- Total_Out : ULong := 0; -- total nb of bytes output so far
- msg : Chars_Ptr; -- last error message, NULL if no error
- state : Voidp; -- not visible by applications
- zalloc : alloc_func := null; -- used to allocate the internal state
- zfree : free_func := null; -- used to free the internal state
- opaque : Voidp; -- private data object passed to
- -- zalloc and zfree
- data_type : Int; -- best guess about the data type:
- -- ascii or binary
- adler : ULong; -- adler32 value of the uncompressed
- -- data
- reserved : ULong; -- reserved for future use
- end record;
-
- pragma Convention (C, Z_Stream);
-
- pragma Import (C, zlibVersion, "zlibVersion");
- pragma Import (C, Deflate, "deflate");
- pragma Import (C, DeflateEnd, "deflateEnd");
- pragma Import (C, Inflate, "inflate");
- pragma Import (C, InflateEnd, "inflateEnd");
- pragma Import (C, deflateSetDictionary, "deflateSetDictionary");
- pragma Import (C, deflateCopy, "deflateCopy");
- pragma Import (C, deflateReset, "deflateReset");
- pragma Import (C, deflateParams, "deflateParams");
- pragma Import (C, inflateSetDictionary, "inflateSetDictionary");
- pragma Import (C, inflateSync, "inflateSync");
- pragma Import (C, inflateReset, "inflateReset");
- pragma Import (C, compress, "compress");
- pragma Import (C, compress2, "compress2");
- pragma Import (C, uncompress, "uncompress");
- pragma Import (C, gzopen, "gzopen");
- pragma Import (C, gzdopen, "gzdopen");
- pragma Import (C, gzsetparams, "gzsetparams");
- pragma Import (C, gzread, "gzread");
- pragma Import (C, gzwrite, "gzwrite");
- pragma Import (C, gzprintf, "gzprintf");
- pragma Import (C, gzputs, "gzputs");
- pragma Import (C, gzgets, "gzgets");
- pragma Import (C, gzputc, "gzputc");
- pragma Import (C, gzgetc, "gzgetc");
- pragma Import (C, gzflush, "gzflush");
- pragma Import (C, gzseek, "gzseek");
- pragma Import (C, gzrewind, "gzrewind");
- pragma Import (C, gztell, "gztell");
- pragma Import (C, gzeof, "gzeof");
- pragma Import (C, gzclose, "gzclose");
- pragma Import (C, gzerror, "gzerror");
- pragma Import (C, adler32, "adler32");
- pragma Import (C, crc32, "crc32");
- pragma Import (C, deflateInit, "deflateInit_");
- pragma Import (C, inflateInit, "inflateInit_");
- pragma Import (C, deflateInit2, "deflateInit2_");
- pragma Import (C, inflateInit2, "inflateInit2_");
- pragma Import (C, zError, "zError");
- pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
- pragma Import (C, get_crc_table, "get_crc_table");
-
- -- since zlib 1.2.0:
-
- pragma Import (C, inflateCopy, "inflateCopy");
- pragma Import (C, compressBound, "compressBound");
- pragma Import (C, deflateBound, "deflateBound");
- pragma Import (C, gzungetc, "gzungetc");
- pragma Import (C, zlibCompileFlags, "zlibCompileFlags");
-
- pragma Import (C, inflateBackInit, "inflateBackInit_");
-
- -- I stopped binding the inflateBack routines, because realize that
- -- it does not support zlib and gzip headers for now, and have no
- -- symmetric deflateBack routines.
- -- ZLib-Ada is symmetric regarding deflate/inflate data transformation
- -- and has a similar generic callback interface for the
- -- deflate/inflate transformation based on the regular Deflate/Inflate
- -- routines.
-
- -- pragma Import (C, inflateBack, "inflateBack");
- -- pragma Import (C, inflateBackEnd, "inflateBackEnd");
-
-end ZLib.Thin;
+++ /dev/null
-----------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2004 Dmitriy Anisimkov --
--- --
--- Open source license information is in the zlib.ads file. --
-----------------------------------------------------------------
-
--- $Id: zlib.adb,v 1.31 2004/09/06 06:53:19 vagul Exp $
-
-with Ada.Exceptions;
-with Ada.Unchecked_Conversion;
-with Ada.Unchecked_Deallocation;
-
-with Interfaces.C.Strings;
-
-with ZLib.Thin;
-
-package body ZLib is
-
- use type Thin.Int;
-
- type Z_Stream is new Thin.Z_Stream;
-
- type Return_Code_Enum is
- (OK,
- STREAM_END,
- NEED_DICT,
- ERRNO,
- STREAM_ERROR,
- DATA_ERROR,
- MEM_ERROR,
- BUF_ERROR,
- VERSION_ERROR);
-
- type Flate_Step_Function is access
- function (Strm : in Thin.Z_Streamp; Flush : in Thin.Int) return Thin.Int;
- pragma Convention (C, Flate_Step_Function);
-
- type Flate_End_Function is access
- function (Ctrm : in Thin.Z_Streamp) return Thin.Int;
- pragma Convention (C, Flate_End_Function);
-
- type Flate_Type is record
- Step : Flate_Step_Function;
- Done : Flate_End_Function;
- end record;
-
- subtype Footer_Array is Stream_Element_Array (1 .. 8);
-
- Simple_GZip_Header : constant Stream_Element_Array (1 .. 10)
- := (16#1f#, 16#8b#, -- Magic header
- 16#08#, -- Z_DEFLATED
- 16#00#, -- Flags
- 16#00#, 16#00#, 16#00#, 16#00#, -- Time
- 16#00#, -- XFlags
- 16#03# -- OS code
- );
- -- The simplest gzip header is not for informational, but just for
- -- gzip format compatibility.
- -- Note that some code below is using assumption
- -- Simple_GZip_Header'Last > Footer_Array'Last, so do not make
- -- Simple_GZip_Header'Last <= Footer_Array'Last.
-
- Return_Code : constant array (Thin.Int range <>) of Return_Code_Enum
- := (0 => OK,
- 1 => STREAM_END,
- 2 => NEED_DICT,
- -1 => ERRNO,
- -2 => STREAM_ERROR,
- -3 => DATA_ERROR,
- -4 => MEM_ERROR,
- -5 => BUF_ERROR,
- -6 => VERSION_ERROR);
-
- Flate : constant array (Boolean) of Flate_Type
- := (True => (Step => Thin.Deflate'Access,
- Done => Thin.DeflateEnd'Access),
- False => (Step => Thin.Inflate'Access,
- Done => Thin.InflateEnd'Access));
-
- Flush_Finish : constant array (Boolean) of Flush_Mode
- := (True => Finish, False => No_Flush);
-
- procedure Raise_Error (Stream : in Z_Stream);
- pragma Inline (Raise_Error);
-
- procedure Raise_Error (Message : in String);
- pragma Inline (Raise_Error);
-
- procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int);
-
- procedure Free is new Ada.Unchecked_Deallocation
- (Z_Stream, Z_Stream_Access);
-
- function To_Thin_Access is new Ada.Unchecked_Conversion
- (Z_Stream_Access, Thin.Z_Streamp);
-
- procedure Translate_GZip
- (Filter : in out Filter_Type;
- In_Data : in Ada.Streams.Stream_Element_Array;
- In_Last : out Ada.Streams.Stream_Element_Offset;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode);
- -- Separate translate routine for make gzip header.
-
- procedure Translate_Auto
- (Filter : in out Filter_Type;
- In_Data : in Ada.Streams.Stream_Element_Array;
- In_Last : out Ada.Streams.Stream_Element_Offset;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode);
- -- translate routine without additional headers.
-
- -----------------
- -- Check_Error --
- -----------------
-
- procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int) is
- use type Thin.Int;
- begin
- if Code /= Thin.Z_OK then
- Raise_Error
- (Return_Code_Enum'Image (Return_Code (Code))
- & ": " & Last_Error_Message (Stream));
- end if;
- end Check_Error;
-
- -----------
- -- Close --
- -----------
-
- procedure Close
- (Filter : in out Filter_Type;
- Ignore_Error : in Boolean := False)
- is
- Code : Thin.Int;
- begin
- if not Ignore_Error and then not Is_Open (Filter) then
- raise Status_Error;
- end if;
-
- Code := Flate (Filter.Compression).Done (To_Thin_Access (Filter.Strm));
-
- if Ignore_Error or else Code = Thin.Z_OK then
- Free (Filter.Strm);
- else
- declare
- Error_Message : constant String
- := Last_Error_Message (Filter.Strm.all);
- begin
- Free (Filter.Strm);
- Ada.Exceptions.Raise_Exception
- (ZLib_Error'Identity,
- Return_Code_Enum'Image (Return_Code (Code))
- & ": " & Error_Message);
- end;
- end if;
- end Close;
-
- -----------
- -- CRC32 --
- -----------
-
- function CRC32
- (CRC : in Unsigned_32;
- Data : in Ada.Streams.Stream_Element_Array)
- return Unsigned_32
- is
- use Thin;
- begin
- return Unsigned_32 (crc32 (ULong (CRC),
- Data'Address,
- Data'Length));
- end CRC32;
-
- procedure CRC32
- (CRC : in out Unsigned_32;
- Data : in Ada.Streams.Stream_Element_Array) is
- begin
- CRC := CRC32 (CRC, Data);
- end CRC32;
-
- ------------------
- -- Deflate_Init --
- ------------------
-
- procedure Deflate_Init
- (Filter : in out Filter_Type;
- Level : in Compression_Level := Default_Compression;
- Strategy : in Strategy_Type := Default_Strategy;
- Method : in Compression_Method := Deflated;
- Window_Bits : in Window_Bits_Type := Default_Window_Bits;
- Memory_Level : in Memory_Level_Type := Default_Memory_Level;
- Header : in Header_Type := Default)
- is
- use type Thin.Int;
- Win_Bits : Thin.Int := Thin.Int (Window_Bits);
- begin
- if Is_Open (Filter) then
- raise Status_Error;
- end if;
-
- -- We allow ZLib to make header only in case of default header type.
- -- Otherwise we would either do header by ourselfs, or do not do
- -- header at all.
-
- if Header = None or else Header = GZip then
- Win_Bits := -Win_Bits;
- end if;
-
- -- For the GZip CRC calculation and make headers.
-
- if Header = GZip then
- Filter.CRC := 0;
- Filter.Offset := Simple_GZip_Header'First;
- else
- Filter.Offset := Simple_GZip_Header'Last + 1;
- end if;
-
- Filter.Strm := new Z_Stream;
- Filter.Compression := True;
- Filter.Stream_End := False;
- Filter.Header := Header;
-
- if Thin.Deflate_Init
- (To_Thin_Access (Filter.Strm),
- Level => Thin.Int (Level),
- method => Thin.Int (Method),
- windowBits => Win_Bits,
- memLevel => Thin.Int (Memory_Level),
- strategy => Thin.Int (Strategy)) /= Thin.Z_OK
- then
- Raise_Error (Filter.Strm.all);
- end if;
- end Deflate_Init;
-
- -----------
- -- Flush --
- -----------
-
- procedure Flush
- (Filter : in out Filter_Type;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode)
- is
- No_Data : Stream_Element_Array := (1 .. 0 => 0);
- Last : Stream_Element_Offset;
- begin
- Translate (Filter, No_Data, Last, Out_Data, Out_Last, Flush);
- end Flush;
-
- -----------------------
- -- Generic_Translate --
- -----------------------
-
- procedure Generic_Translate
- (Filter : in out ZLib.Filter_Type;
- In_Buffer_Size : in Integer := Default_Buffer_Size;
- Out_Buffer_Size : in Integer := Default_Buffer_Size)
- is
- In_Buffer : Stream_Element_Array
- (1 .. Stream_Element_Offset (In_Buffer_Size));
- Out_Buffer : Stream_Element_Array
- (1 .. Stream_Element_Offset (Out_Buffer_Size));
- Last : Stream_Element_Offset;
- In_Last : Stream_Element_Offset;
- In_First : Stream_Element_Offset;
- Out_Last : Stream_Element_Offset;
- begin
- Main : loop
- Data_In (In_Buffer, Last);
-
- In_First := In_Buffer'First;
-
- loop
- Translate
- (Filter => Filter,
- In_Data => In_Buffer (In_First .. Last),
- In_Last => In_Last,
- Out_Data => Out_Buffer,
- Out_Last => Out_Last,
- Flush => Flush_Finish (Last < In_Buffer'First));
-
- if Out_Buffer'First <= Out_Last then
- Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
- end if;
-
- exit Main when Stream_End (Filter);
-
- -- The end of in buffer.
-
- exit when In_Last = Last;
-
- In_First := In_Last + 1;
- end loop;
- end loop Main;
-
- end Generic_Translate;
-
- ------------------
- -- Inflate_Init --
- ------------------
-
- procedure Inflate_Init
- (Filter : in out Filter_Type;
- Window_Bits : in Window_Bits_Type := Default_Window_Bits;
- Header : in Header_Type := Default)
- is
- use type Thin.Int;
- Win_Bits : Thin.Int := Thin.Int (Window_Bits);
-
- procedure Check_Version;
- -- Check the latest header types compatibility.
-
- procedure Check_Version is
- begin
- if Version <= "1.1.4" then
- Raise_Error
- ("Inflate header type " & Header_Type'Image (Header)
- & " incompatible with ZLib version " & Version);
- end if;
- end Check_Version;
-
- begin
- if Is_Open (Filter) then
- raise Status_Error;
- end if;
-
- case Header is
- when None =>
- Check_Version;
-
- -- Inflate data without headers determined
- -- by negative Win_Bits.
-
- Win_Bits := -Win_Bits;
- when GZip =>
- Check_Version;
-
- -- Inflate gzip data defined by flag 16.
-
- Win_Bits := Win_Bits + 16;
- when Auto =>
- Check_Version;
-
- -- Inflate with automatic detection
- -- of gzip or native header defined by flag 32.
-
- Win_Bits := Win_Bits + 32;
- when Default => null;
- end case;
-
- Filter.Strm := new Z_Stream;
- Filter.Compression := False;
- Filter.Stream_End := False;
- Filter.Header := Header;
-
- if Thin.Inflate_Init
- (To_Thin_Access (Filter.Strm), Win_Bits) /= Thin.Z_OK
- then
- Raise_Error (Filter.Strm.all);
- end if;
- end Inflate_Init;
-
- -------------
- -- Is_Open --
- -------------
-
- function Is_Open (Filter : in Filter_Type) return Boolean is
- begin
- return Filter.Strm /= null;
- end Is_Open;
-
- -----------------
- -- Raise_Error --
- -----------------
-
- procedure Raise_Error (Message : in String) is
- begin
- Ada.Exceptions.Raise_Exception (ZLib_Error'Identity, Message);
- end Raise_Error;
-
- procedure Raise_Error (Stream : in Z_Stream) is
- begin
- Raise_Error (Last_Error_Message (Stream));
- end Raise_Error;
-
- ----------
- -- Read --
- ----------
-
- procedure Read
- (Filter : in out Filter_Type;
- Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode := No_Flush)
- is
- In_Last : Stream_Element_Offset;
- Item_First : Ada.Streams.Stream_Element_Offset := Item'First;
- V_Flush : Flush_Mode := Flush;
-
- begin
- pragma Assert (Rest_First in Buffer'First .. Buffer'Last + 1);
- pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);
-
- loop
- if Rest_Last = Buffer'First - 1 then
- V_Flush := Finish;
-
- elsif Rest_First > Rest_Last then
- Read (Buffer, Rest_Last);
- Rest_First := Buffer'First;
-
- if Rest_Last < Buffer'First then
- V_Flush := Finish;
- end if;
- end if;
-
- Translate
- (Filter => Filter,
- In_Data => Buffer (Rest_First .. Rest_Last),
- In_Last => In_Last,
- Out_Data => Item (Item_First .. Item'Last),
- Out_Last => Last,
- Flush => V_Flush);
-
- Rest_First := In_Last + 1;
-
- exit when Stream_End (Filter)
- or else Last = Item'Last
- or else (Last >= Item'First and then Allow_Read_Some);
-
- Item_First := Last + 1;
- end loop;
- end Read;
-
- ----------------
- -- Stream_End --
- ----------------
-
- function Stream_End (Filter : in Filter_Type) return Boolean is
- begin
- if Filter.Header = GZip and Filter.Compression then
- return Filter.Stream_End
- and then Filter.Offset = Footer_Array'Last + 1;
- else
- return Filter.Stream_End;
- end if;
- end Stream_End;
-
- --------------
- -- Total_In --
- --------------
-
- function Total_In (Filter : in Filter_Type) return Count is
- begin
- return Count (Thin.Total_In (To_Thin_Access (Filter.Strm).all));
- end Total_In;
-
- ---------------
- -- Total_Out --
- ---------------
-
- function Total_Out (Filter : in Filter_Type) return Count is
- begin
- return Count (Thin.Total_Out (To_Thin_Access (Filter.Strm).all));
- end Total_Out;
-
- ---------------
- -- Translate --
- ---------------
-
- procedure Translate
- (Filter : in out Filter_Type;
- In_Data : in Ada.Streams.Stream_Element_Array;
- In_Last : out Ada.Streams.Stream_Element_Offset;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode) is
- begin
- if Filter.Header = GZip and then Filter.Compression then
- Translate_GZip
- (Filter => Filter,
- In_Data => In_Data,
- In_Last => In_Last,
- Out_Data => Out_Data,
- Out_Last => Out_Last,
- Flush => Flush);
- else
- Translate_Auto
- (Filter => Filter,
- In_Data => In_Data,
- In_Last => In_Last,
- Out_Data => Out_Data,
- Out_Last => Out_Last,
- Flush => Flush);
- end if;
- end Translate;
-
- --------------------
- -- Translate_Auto --
- --------------------
-
- procedure Translate_Auto
- (Filter : in out Filter_Type;
- In_Data : in Ada.Streams.Stream_Element_Array;
- In_Last : out Ada.Streams.Stream_Element_Offset;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode)
- is
- use type Thin.Int;
- Code : Thin.Int;
-
- begin
- if not Is_Open (Filter) then
- raise Status_Error;
- end if;
-
- if Out_Data'Length = 0 and then In_Data'Length = 0 then
- raise Constraint_Error;
- end if;
-
- Set_Out (Filter.Strm.all, Out_Data'Address, Out_Data'Length);
- Set_In (Filter.Strm.all, In_Data'Address, In_Data'Length);
-
- Code := Flate (Filter.Compression).Step
- (To_Thin_Access (Filter.Strm),
- Thin.Int (Flush));
-
- if Code = Thin.Z_STREAM_END then
- Filter.Stream_End := True;
- else
- Check_Error (Filter.Strm.all, Code);
- end if;
-
- In_Last := In_Data'Last
- - Stream_Element_Offset (Avail_In (Filter.Strm.all));
- Out_Last := Out_Data'Last
- - Stream_Element_Offset (Avail_Out (Filter.Strm.all));
- end Translate_Auto;
-
- --------------------
- -- Translate_GZip --
- --------------------
-
- procedure Translate_GZip
- (Filter : in out Filter_Type;
- In_Data : in Ada.Streams.Stream_Element_Array;
- In_Last : out Ada.Streams.Stream_Element_Offset;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode)
- is
- Out_First : Stream_Element_Offset;
-
- procedure Add_Data (Data : in Stream_Element_Array);
- -- Add data to stream from the Filter.Offset till necessary,
- -- used for add gzip headr/footer.
-
- procedure Put_32
- (Item : in out Stream_Element_Array;
- Data : in Unsigned_32);
- pragma Inline (Put_32);
-
- --------------
- -- Add_Data --
- --------------
-
- procedure Add_Data (Data : in Stream_Element_Array) is
- Data_First : Stream_Element_Offset renames Filter.Offset;
- Data_Last : Stream_Element_Offset;
- Data_Len : Stream_Element_Offset; -- -1
- Out_Len : Stream_Element_Offset; -- -1
- begin
- Out_First := Out_Last + 1;
-
- if Data_First > Data'Last then
- return;
- end if;
-
- Data_Len := Data'Last - Data_First;
- Out_Len := Out_Data'Last - Out_First;
-
- if Data_Len <= Out_Len then
- Out_Last := Out_First + Data_Len;
- Data_Last := Data'Last;
- else
- Out_Last := Out_Data'Last;
- Data_Last := Data_First + Out_Len;
- end if;
-
- Out_Data (Out_First .. Out_Last) := Data (Data_First .. Data_Last);
-
- Data_First := Data_Last + 1;
- Out_First := Out_Last + 1;
- end Add_Data;
-
- ------------
- -- Put_32 --
- ------------
-
- procedure Put_32
- (Item : in out Stream_Element_Array;
- Data : in Unsigned_32)
- is
- D : Unsigned_32 := Data;
- begin
- for J in Item'First .. Item'First + 3 loop
- Item (J) := Stream_Element (D and 16#FF#);
- D := Shift_Right (D, 8);
- end loop;
- end Put_32;
-
- begin
- Out_Last := Out_Data'First - 1;
-
- if not Filter.Stream_End then
- Add_Data (Simple_GZip_Header);
-
- Translate_Auto
- (Filter => Filter,
- In_Data => In_Data,
- In_Last => In_Last,
- Out_Data => Out_Data (Out_First .. Out_Data'Last),
- Out_Last => Out_Last,
- Flush => Flush);
-
- CRC32 (Filter.CRC, In_Data (In_Data'First .. In_Last));
- end if;
-
- if Filter.Stream_End and then Out_Last <= Out_Data'Last then
- -- This detection method would work only when
- -- Simple_GZip_Header'Last > Footer_Array'Last
-
- if Filter.Offset = Simple_GZip_Header'Last + 1 then
- Filter.Offset := Footer_Array'First;
- end if;
-
- declare
- Footer : Footer_Array;
- begin
- Put_32 (Footer, Filter.CRC);
- Put_32 (Footer (Footer'First + 4 .. Footer'Last),
- Unsigned_32 (Total_In (Filter)));
- Add_Data (Footer);
- end;
- end if;
- end Translate_GZip;
-
- -------------
- -- Version --
- -------------
-
- function Version return String is
- begin
- return Interfaces.C.Strings.Value (Thin.zlibVersion);
- end Version;
-
- -----------
- -- Write --
- -----------
-
- procedure Write
- (Filter : in out Filter_Type;
- Item : in Ada.Streams.Stream_Element_Array;
- Flush : in Flush_Mode := No_Flush)
- is
- Buffer : Stream_Element_Array (1 .. Buffer_Size);
- In_Last : Stream_Element_Offset;
- Out_Last : Stream_Element_Offset;
- In_First : Stream_Element_Offset := Item'First;
- begin
- if Item'Length = 0 and Flush = No_Flush then
- return;
- end if;
-
- loop
- Translate
- (Filter => Filter,
- In_Data => Item (In_First .. Item'Last),
- In_Last => In_Last,
- Out_Data => Buffer,
- Out_Last => Out_Last,
- Flush => Flush);
-
- if Out_Last >= Buffer'First then
- Write (Buffer (1 .. Out_Last));
- end if;
-
- exit when In_Last = Item'Last or Stream_End (Filter);
-
- In_First := In_Last + 1;
- end loop;
- end Write;
-
-end ZLib;
+++ /dev/null
-------------------------------------------------------------------------------
--- ZLib for Ada thick binding. --
--- --
--- Copyright (C) 2002-2004 Dmitriy Anisimkov --
--- --
--- This library is free software; you can redistribute it and/or modify --
--- it under the terms of the GNU General Public License as published by --
--- the Free Software Foundation; either version 2 of the License, or (at --
--- your option) any later version. --
--- --
--- This library is distributed in the hope that it will be useful, but --
--- WITHOUT ANY WARRANTY; without even the implied warranty of --
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
--- General Public License for more details. --
--- --
--- You should have received a copy of the GNU General Public License --
--- along with this library; if not, write to the Free Software Foundation, --
--- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
-------------------------------------------------------------------------------
-
--- $Id: zlib.ads,v 1.26 2004/09/06 06:53:19 vagul Exp $
-
-with Ada.Streams;
-
-with Interfaces;
-
-package ZLib is
-
- ZLib_Error : exception;
- Status_Error : exception;
-
- type Compression_Level is new Integer range -1 .. 9;
-
- type Flush_Mode is private;
-
- type Compression_Method is private;
-
- type Window_Bits_Type is new Integer range 8 .. 15;
-
- type Memory_Level_Type is new Integer range 1 .. 9;
-
- type Unsigned_32 is new Interfaces.Unsigned_32;
-
- type Strategy_Type is private;
-
- type Header_Type is (None, Auto, Default, GZip);
- -- Header type usage have a some limitation for inflate.
- -- See comment for Inflate_Init.
-
- subtype Count is Ada.Streams.Stream_Element_Count;
-
- Default_Memory_Level : constant Memory_Level_Type := 8;
- Default_Window_Bits : constant Window_Bits_Type := 15;
-
- ----------------------------------
- -- Compression method constants --
- ----------------------------------
-
- Deflated : constant Compression_Method;
- -- Only one method allowed in this ZLib version
-
- ---------------------------------
- -- Compression level constants --
- ---------------------------------
-
- No_Compression : constant Compression_Level := 0;
- Best_Speed : constant Compression_Level := 1;
- Best_Compression : constant Compression_Level := 9;
- Default_Compression : constant Compression_Level := -1;
-
- --------------------------
- -- Flush mode constants --
- --------------------------
-
- No_Flush : constant Flush_Mode;
- -- Regular way for compression, no flush
-
- Partial_Flush : constant Flush_Mode;
- -- Will be removed, use Z_SYNC_FLUSH instead
-
- Sync_Flush : constant Flush_Mode;
- -- All pending output is flushed to the output buffer and the output
- -- is aligned on a byte boundary, so that the decompressor can get all
- -- input data available so far. (In particular avail_in is zero after the
- -- call if enough output space has been provided before the call.)
- -- Flushing may degrade compression for some compression algorithms and so
- -- it should be used only when necessary.
-
- Block_Flush : constant Flush_Mode;
- -- Z_BLOCK requests that inflate() stop
- -- if and when it get to the next deflate block boundary. When decoding the
- -- zlib or gzip format, this will cause inflate() to return immediately
- -- after the header and before the first block. When doing a raw inflate,
- -- inflate() will go ahead and process the first block, and will return
- -- when it gets to the end of that block, or when it runs out of data.
-
- Full_Flush : constant Flush_Mode;
- -- All output is flushed as with SYNC_FLUSH, and the compression state
- -- is reset so that decompression can restart from this point if previous
- -- compressed data has been damaged or if random access is desired. Using
- -- Full_Flush too often can seriously degrade the compression.
-
- Finish : constant Flush_Mode;
- -- Just for tell the compressor that input data is complete.
-
- ------------------------------------
- -- Compression strategy constants --
- ------------------------------------
-
- -- RLE stategy could be used only in version 1.2.0 and later.
-
- Filtered : constant Strategy_Type;
- Huffman_Only : constant Strategy_Type;
- RLE : constant Strategy_Type;
- Default_Strategy : constant Strategy_Type;
-
- Default_Buffer_Size : constant := 4096;
-
- type Filter_Type is tagged limited private;
- -- The filter is for compression and for decompression.
- -- The usage of the type is depend of its initialization.
-
- function Version return String;
- pragma Inline (Version);
- -- Return string representation of the ZLib version.
-
- procedure Deflate_Init
- (Filter : in out Filter_Type;
- Level : in Compression_Level := Default_Compression;
- Strategy : in Strategy_Type := Default_Strategy;
- Method : in Compression_Method := Deflated;
- Window_Bits : in Window_Bits_Type := Default_Window_Bits;
- Memory_Level : in Memory_Level_Type := Default_Memory_Level;
- Header : in Header_Type := Default);
- -- Compressor initialization.
- -- When Header parameter is Auto or Default, then default zlib header
- -- would be provided for compressed data.
- -- When Header is GZip, then gzip header would be set instead of
- -- default header.
- -- When Header is None, no header would be set for compressed data.
-
- procedure Inflate_Init
- (Filter : in out Filter_Type;
- Window_Bits : in Window_Bits_Type := Default_Window_Bits;
- Header : in Header_Type := Default);
- -- Decompressor initialization.
- -- Default header type mean that ZLib default header is expecting in the
- -- input compressed stream.
- -- Header type None mean that no header is expecting in the input stream.
- -- GZip header type mean that GZip header is expecting in the
- -- input compressed stream.
- -- Auto header type mean that header type (GZip or Native) would be
- -- detected automatically in the input stream.
- -- Note that header types parameter values None, GZip and Auto are
- -- supported for inflate routine only in ZLib versions 1.2.0.2 and later.
- -- Deflate_Init is supporting all header types.
-
- function Is_Open (Filter : in Filter_Type) return Boolean;
- pragma Inline (Is_Open);
- -- Is the filter opened for compression or decompression.
-
- procedure Close
- (Filter : in out Filter_Type;
- Ignore_Error : in Boolean := False);
- -- Closing the compression or decompressor.
- -- If stream is closing before the complete and Ignore_Error is False,
- -- The exception would be raised.
-
- generic
- with procedure Data_In
- (Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset);
- with procedure Data_Out
- (Item : in Ada.Streams.Stream_Element_Array);
- procedure Generic_Translate
- (Filter : in out Filter_Type;
- In_Buffer_Size : in Integer := Default_Buffer_Size;
- Out_Buffer_Size : in Integer := Default_Buffer_Size);
- -- Compress/decompress data fetch from Data_In routine and pass the result
- -- to the Data_Out routine. User should provide Data_In and Data_Out
- -- for compression/decompression data flow.
- -- Compression or decompression depend on Filter initialization.
-
- function Total_In (Filter : in Filter_Type) return Count;
- pragma Inline (Total_In);
- -- Returns total number of input bytes read so far
-
- function Total_Out (Filter : in Filter_Type) return Count;
- pragma Inline (Total_Out);
- -- Returns total number of bytes output so far
-
- function CRC32
- (CRC : in Unsigned_32;
- Data : in Ada.Streams.Stream_Element_Array)
- return Unsigned_32;
- pragma Inline (CRC32);
- -- Compute CRC32, it could be necessary for make gzip format
-
- procedure CRC32
- (CRC : in out Unsigned_32;
- Data : in Ada.Streams.Stream_Element_Array);
- pragma Inline (CRC32);
- -- Compute CRC32, it could be necessary for make gzip format
-
- -------------------------------------------------
- -- Below is more complex low level routines. --
- -------------------------------------------------
-
- procedure Translate
- (Filter : in out Filter_Type;
- In_Data : in Ada.Streams.Stream_Element_Array;
- In_Last : out Ada.Streams.Stream_Element_Offset;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode);
- -- Compress/decompress the In_Data buffer and place the result into
- -- Out_Data. In_Last is the index of last element from In_Data accepted by
- -- the Filter. Out_Last is the last element of the received data from
- -- Filter. To tell the filter that incoming data are complete put the
- -- Flush parameter to Finish.
-
- function Stream_End (Filter : in Filter_Type) return Boolean;
- pragma Inline (Stream_End);
- -- Return the true when the stream is complete.
-
- procedure Flush
- (Filter : in out Filter_Type;
- Out_Data : out Ada.Streams.Stream_Element_Array;
- Out_Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode);
- pragma Inline (Flush);
- -- Flushing the data from the compressor.
-
- generic
- with procedure Write
- (Item : in Ada.Streams.Stream_Element_Array);
- -- User should provide this routine for accept
- -- compressed/decompressed data.
-
- Buffer_Size : in Ada.Streams.Stream_Element_Offset
- := Default_Buffer_Size;
- -- Buffer size for Write user routine.
-
- procedure Write
- (Filter : in out Filter_Type;
- Item : in Ada.Streams.Stream_Element_Array;
- Flush : in Flush_Mode := No_Flush);
- -- Compress/Decompress data from Item to the generic parameter procedure
- -- Write. Output buffer size could be set in Buffer_Size generic parameter.
-
- generic
- with procedure Read
- (Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset);
- -- User should provide data for compression/decompression
- -- thru this routine.
-
- Buffer : in out Ada.Streams.Stream_Element_Array;
- -- Buffer for keep remaining data from the previous
- -- back read.
-
- Rest_First, Rest_Last : in out Ada.Streams.Stream_Element_Offset;
- -- Rest_First have to be initialized to Buffer'Last + 1
- -- Rest_Last have to be initialized to Buffer'Last
- -- before usage.
-
- Allow_Read_Some : in Boolean := False;
- -- Is it allowed to return Last < Item'Last before end of data.
-
- procedure Read
- (Filter : in out Filter_Type;
- Item : out Ada.Streams.Stream_Element_Array;
- Last : out Ada.Streams.Stream_Element_Offset;
- Flush : in Flush_Mode := No_Flush);
- -- Compress/Decompress data from generic parameter procedure Read to the
- -- Item. User should provide Buffer and initialized Rest_First, Rest_Last
- -- indicators. If Allow_Read_Some is True, Read routines could return
- -- Last < Item'Last only at end of stream.
-
-private
-
- use Ada.Streams;
-
- pragma Assert (Ada.Streams.Stream_Element'Size = 8);
- pragma Assert (Ada.Streams.Stream_Element'Modulus = 2**8);
-
- type Flush_Mode is new Integer range 0 .. 5;
-
- type Compression_Method is new Integer range 8 .. 8;
-
- type Strategy_Type is new Integer range 0 .. 3;
-
- No_Flush : constant Flush_Mode := 0;
- Partial_Flush : constant Flush_Mode := 1;
- Sync_Flush : constant Flush_Mode := 2;
- Full_Flush : constant Flush_Mode := 3;
- Finish : constant Flush_Mode := 4;
- Block_Flush : constant Flush_Mode := 5;
-
- Filtered : constant Strategy_Type := 1;
- Huffman_Only : constant Strategy_Type := 2;
- RLE : constant Strategy_Type := 3;
- Default_Strategy : constant Strategy_Type := 0;
-
- Deflated : constant Compression_Method := 8;
-
- type Z_Stream;
-
- type Z_Stream_Access is access all Z_Stream;
-
- type Filter_Type is tagged limited record
- Strm : Z_Stream_Access;
- Compression : Boolean;
- Stream_End : Boolean;
- Header : Header_Type;
- CRC : Unsigned_32;
- Offset : Stream_Element_Offset;
- -- Offset for gzip header/footer output.
- end record;
-
-end ZLib;
+++ /dev/null
-project Zlib is
-
- for Languages use ("Ada");
- for Source_Dirs use (".");
- for Object_Dir use ".";
- for Main use ("test.adb", "mtest.adb", "read.adb", "buffer_demo");
-
- package Compiler is
- for Default_Switches ("ada") use ("-gnatwcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
- end Compiler;
-
- package Linker is
- for Default_Switches ("ada") use ("-lz");
- end Linker;
-
- package Builder is
- for Default_Switches ("ada") use ("-s", "-gnatQ");
- end Builder;
-
-end Zlib;
+++ /dev/null
-This is a patched version of zlib modified to use
-Pentium-optimized assembly code in the deflation algorithm. The files
-changed/added by this patch are:
-
-README.586
-match.S
-
-The effectiveness of these modifications is a bit marginal, as the the
-program's bottleneck seems to be mostly L1-cache contention, for which
-there is no real way to work around without rewriting the basic
-algorithm. The speedup on average is around 5-10% (which is generally
-less than the amount of variance between subsequent executions).
-However, when used at level 9 compression, the cache contention can
-drop enough for the assembly version to achieve 10-20% speedup (and
-sometimes more, depending on the amount of overall redundancy in the
-files). Even here, though, cache contention can still be the limiting
-factor, depending on the nature of the program using the zlib library.
-This may also mean that better improvements will be seen on a Pentium
-with MMX, which suffers much less from L1-cache contention, but I have
-not yet verified this.
-
-Note that this code has been tailored for the Pentium in particular,
-and will not perform well on the Pentium Pro (due to the use of a
-partial register in the inner loop).
-
-If you are using an assembler other than GNU as, you will have to
-translate match.S to use your assembler's syntax. (Have fun.)
-
-Brian Raiter
-breadbox@muppetlabs.com
-April, 1998
-
-
-Added for zlib 1.1.3:
-
-The patches come from
-http://www.muppetlabs.com/~breadbox/software/assembly.html
-
-To compile zlib with this asm file, copy match.S to the zlib directory
-then do:
-
-CFLAGS="-O3 -DASMV" ./configure
-make OBJA=match.o
+++ /dev/null
-/* match.s -- Pentium-optimized version of longest_match()
- * Written for zlib 1.1.2
- * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
- *
- * This is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License.
- */
-
-#ifndef NO_UNDERLINE
-#define match_init _match_init
-#define longest_match _longest_match
-#endif
-
-#define MAX_MATCH (258)
-#define MIN_MATCH (3)
-#define MIN_LOOKAHEAD (MAX_MATCH + MIN_MATCH + 1)
-#define MAX_MATCH_8 ((MAX_MATCH + 7) & ~7)
-
-/* stack frame offsets */
-
-#define wmask 0 /* local copy of s->wmask */
-#define window 4 /* local copy of s->window */
-#define windowbestlen 8 /* s->window + bestlen */
-#define chainlenscanend 12 /* high word: current chain len */
- /* low word: last bytes sought */
-#define scanstart 16 /* first two bytes of string */
-#define scanalign 20 /* dword-misalignment of string */
-#define nicematch 24 /* a good enough match size */
-#define bestlen 28 /* size of best match so far */
-#define scan 32 /* ptr to string wanting match */
-
-#define LocalVarsSize (36)
-/* saved ebx 36 */
-/* saved edi 40 */
-/* saved esi 44 */
-/* saved ebp 48 */
-/* return address 52 */
-#define deflatestate 56 /* the function arguments */
-#define curmatch 60
-
-/* Offsets for fields in the deflate_state structure. These numbers
- * are calculated from the definition of deflate_state, with the
- * assumption that the compiler will dword-align the fields. (Thus,
- * changing the definition of deflate_state could easily cause this
- * program to crash horribly, without so much as a warning at
- * compile time. Sigh.)
- */
-
-/* All the +zlib1222add offsets are due to the addition of fields
- * in zlib in the deflate_state structure since the asm code was first written
- * (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
- * (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
- * if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
- */
-
-#define zlib1222add (8)
-
-#define dsWSize (36+zlib1222add)
-#define dsWMask (44+zlib1222add)
-#define dsWindow (48+zlib1222add)
-#define dsPrev (56+zlib1222add)
-#define dsMatchLen (88+zlib1222add)
-#define dsPrevMatch (92+zlib1222add)
-#define dsStrStart (100+zlib1222add)
-#define dsMatchStart (104+zlib1222add)
-#define dsLookahead (108+zlib1222add)
-#define dsPrevLen (112+zlib1222add)
-#define dsMaxChainLen (116+zlib1222add)
-#define dsGoodMatch (132+zlib1222add)
-#define dsNiceMatch (136+zlib1222add)
-
-
-.file "match.S"
-
-.globl match_init, longest_match
-
-.text
-
-/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
-
-longest_match:
-
-/* Save registers that the compiler may be using, and adjust %esp to */
-/* make room for our stack frame. */
-
- pushl %ebp
- pushl %edi
- pushl %esi
- pushl %ebx
- subl $LocalVarsSize, %esp
-
-/* Retrieve the function arguments. %ecx will hold cur_match */
-/* throughout the entire function. %edx will hold the pointer to the */
-/* deflate_state structure during the function's setup (before */
-/* entering the main loop). */
-
- movl deflatestate(%esp), %edx
- movl curmatch(%esp), %ecx
-
-/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; */
-
- movl dsNiceMatch(%edx), %eax
- movl dsLookahead(%edx), %ebx
- cmpl %eax, %ebx
- jl LookaheadLess
- movl %eax, %ebx
-LookaheadLess: movl %ebx, nicematch(%esp)
-
-/* register Bytef *scan = s->window + s->strstart; */
-
- movl dsWindow(%edx), %esi
- movl %esi, window(%esp)
- movl dsStrStart(%edx), %ebp
- lea (%esi,%ebp), %edi
- movl %edi, scan(%esp)
-
-/* Determine how many bytes the scan ptr is off from being */
-/* dword-aligned. */
-
- movl %edi, %eax
- negl %eax
- andl $3, %eax
- movl %eax, scanalign(%esp)
-
-/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */
-/* s->strstart - (IPos)MAX_DIST(s) : NIL; */
-
- movl dsWSize(%edx), %eax
- subl $MIN_LOOKAHEAD, %eax
- subl %eax, %ebp
- jg LimitPositive
- xorl %ebp, %ebp
-LimitPositive:
-
-/* unsigned chain_length = s->max_chain_length; */
-/* if (s->prev_length >= s->good_match) { */
-/* chain_length >>= 2; */
-/* } */
-
- movl dsPrevLen(%edx), %eax
- movl dsGoodMatch(%edx), %ebx
- cmpl %ebx, %eax
- movl dsMaxChainLen(%edx), %ebx
- jl LastMatchGood
- shrl $2, %ebx
-LastMatchGood:
-
-/* chainlen is decremented once beforehand so that the function can */
-/* use the sign flag instead of the zero flag for the exit test. */
-/* It is then shifted into the high word, to make room for the scanend */
-/* scanend value, which it will always accompany. */
-
- decl %ebx
- shll $16, %ebx
-
-/* int best_len = s->prev_length; */
-
- movl dsPrevLen(%edx), %eax
- movl %eax, bestlen(%esp)
-
-/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
-
- addl %eax, %esi
- movl %esi, windowbestlen(%esp)
-
-/* register ush scan_start = *(ushf*)scan; */
-/* register ush scan_end = *(ushf*)(scan+best_len-1); */
-
- movw (%edi), %bx
- movw %bx, scanstart(%esp)
- movw -1(%edi,%eax), %bx
- movl %ebx, chainlenscanend(%esp)
-
-/* Posf *prev = s->prev; */
-/* uInt wmask = s->w_mask; */
-
- movl dsPrev(%edx), %edi
- movl dsWMask(%edx), %edx
- mov %edx, wmask(%esp)
-
-/* Jump into the main loop. */
-
- jmp LoopEntry
-
-.balign 16
-
-/* do {
- * match = s->window + cur_match;
- * if (*(ushf*)(match+best_len-1) != scan_end ||
- * *(ushf*)match != scan_start) continue;
- * [...]
- * } while ((cur_match = prev[cur_match & wmask]) > limit
- * && --chain_length != 0);
- *
- * Here is the inner loop of the function. The function will spend the
- * majority of its time in this loop, and majority of that time will
- * be spent in the first ten instructions.
- *
- * Within this loop:
- * %ebx = chainlenscanend - i.e., ((chainlen << 16) | scanend)
- * %ecx = curmatch
- * %edx = curmatch & wmask
- * %esi = windowbestlen - i.e., (window + bestlen)
- * %edi = prev
- * %ebp = limit
- *
- * Two optimization notes on the choice of instructions:
- *
- * The first instruction uses a 16-bit address, which costs an extra,
- * unpairable cycle. This is cheaper than doing a 32-bit access and
- * zeroing the high word, due to the 3-cycle misalignment penalty which
- * would occur half the time. This also turns out to be cheaper than
- * doing two separate 8-bit accesses, as the memory is so rarely in the
- * L1 cache.
- *
- * The window buffer, however, apparently spends a lot of time in the
- * cache, and so it is faster to retrieve the word at the end of the
- * match string with two 8-bit loads. The instructions that test the
- * word at the beginning of the match string, however, are executed
- * much less frequently, and there it was cheaper to use 16-bit
- * instructions, which avoided the necessity of saving off and
- * subsequently reloading one of the other registers.
- */
-LookupLoop:
- /* 1 U & V */
- movw (%edi,%edx,2), %cx /* 2 U pipe */
- movl wmask(%esp), %edx /* 2 V pipe */
- cmpl %ebp, %ecx /* 3 U pipe */
- jbe LeaveNow /* 3 V pipe */
- subl $0x00010000, %ebx /* 4 U pipe */
- js LeaveNow /* 4 V pipe */
-LoopEntry: movb -1(%esi,%ecx), %al /* 5 U pipe */
- andl %ecx, %edx /* 5 V pipe */
- cmpb %bl, %al /* 6 U pipe */
- jnz LookupLoop /* 6 V pipe */
- movb (%esi,%ecx), %ah
- cmpb %bh, %ah
- jnz LookupLoop
- movl window(%esp), %eax
- movw (%eax,%ecx), %ax
- cmpw scanstart(%esp), %ax
- jnz LookupLoop
-
-/* Store the current value of chainlen. */
-
- movl %ebx, chainlenscanend(%esp)
-
-/* Point %edi to the string under scrutiny, and %esi to the string we */
-/* are hoping to match it up with. In actuality, %esi and %edi are */
-/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */
-/* initialized to -(MAX_MATCH_8 - scanalign). */
-
- movl window(%esp), %esi
- movl scan(%esp), %edi
- addl %ecx, %esi
- movl scanalign(%esp), %eax
- movl $(-MAX_MATCH_8), %edx
- lea MAX_MATCH_8(%edi,%eax), %edi
- lea MAX_MATCH_8(%esi,%eax), %esi
-
-/* Test the strings for equality, 8 bytes at a time. At the end,
- * adjust %edx so that it is offset to the exact byte that mismatched.
- *
- * We already know at this point that the first three bytes of the
- * strings match each other, and they can be safely passed over before
- * starting the compare loop. So what this code does is skip over 0-3
- * bytes, as much as necessary in order to dword-align the %edi
- * pointer. (%esi will still be misaligned three times out of four.)
- *
- * It should be confessed that this loop usually does not represent
- * much of the total running time. Replacing it with a more
- * straightforward "rep cmpsb" would not drastically degrade
- * performance.
- */
-LoopCmps:
- movl (%esi,%edx), %eax
- movl (%edi,%edx), %ebx
- xorl %ebx, %eax
- jnz LeaveLoopCmps
- movl 4(%esi,%edx), %eax
- movl 4(%edi,%edx), %ebx
- xorl %ebx, %eax
- jnz LeaveLoopCmps4
- addl $8, %edx
- jnz LoopCmps
- jmp LenMaximum
-LeaveLoopCmps4: addl $4, %edx
-LeaveLoopCmps: testl $0x0000FFFF, %eax
- jnz LenLower
- addl $2, %edx
- shrl $16, %eax
-LenLower: subb $1, %al
- adcl $0, %edx
-
-/* Calculate the length of the match. If it is longer than MAX_MATCH, */
-/* then automatically accept it as the best possible match and leave. */
-
- lea (%edi,%edx), %eax
- movl scan(%esp), %edi
- subl %edi, %eax
- cmpl $MAX_MATCH, %eax
- jge LenMaximum
-
-/* If the length of the match is not longer than the best match we */
-/* have so far, then forget it and return to the lookup loop. */
-
- movl deflatestate(%esp), %edx
- movl bestlen(%esp), %ebx
- cmpl %ebx, %eax
- jg LongerMatch
- movl chainlenscanend(%esp), %ebx
- movl windowbestlen(%esp), %esi
- movl dsPrev(%edx), %edi
- movl wmask(%esp), %edx
- andl %ecx, %edx
- jmp LookupLoop
-
-/* s->match_start = cur_match; */
-/* best_len = len; */
-/* if (len >= nice_match) break; */
-/* scan_end = *(ushf*)(scan+best_len-1); */
-
-LongerMatch: movl nicematch(%esp), %ebx
- movl %eax, bestlen(%esp)
- movl %ecx, dsMatchStart(%edx)
- cmpl %ebx, %eax
- jge LeaveNow
- movl window(%esp), %esi
- addl %eax, %esi
- movl %esi, windowbestlen(%esp)
- movl chainlenscanend(%esp), %ebx
- movw -1(%edi,%eax), %bx
- movl dsPrev(%edx), %edi
- movl %ebx, chainlenscanend(%esp)
- movl wmask(%esp), %edx
- andl %ecx, %edx
- jmp LookupLoop
-
-/* Accept the current string, with the maximum possible length. */
-
-LenMaximum: movl deflatestate(%esp), %edx
- movl $MAX_MATCH, bestlen(%esp)
- movl %ecx, dsMatchStart(%edx)
-
-/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */
-/* return s->lookahead; */
-
-LeaveNow:
- movl deflatestate(%esp), %edx
- movl bestlen(%esp), %ebx
- movl dsLookahead(%edx), %eax
- cmpl %eax, %ebx
- jg LookaheadRet
- movl %ebx, %eax
-LookaheadRet:
-
-/* Restore the stack and return from whence we came. */
-
- addl $LocalVarsSize, %esp
- popl %ebx
- popl %esi
- popl %edi
- popl %ebp
-match_init: ret
+++ /dev/null
-This is a patched version of zlib, modified to use
-Pentium-Pro-optimized assembly code in the deflation algorithm. The
-files changed/added by this patch are:
-
-README.686
-match.S
-
-The speedup that this patch provides varies, depending on whether the
-compiler used to build the original version of zlib falls afoul of the
-PPro's speed traps. My own tests show a speedup of around 10-20% at
-the default compression level, and 20-30% using -9, against a version
-compiled using gcc 2.7.2.3. Your mileage may vary.
-
-Note that this code has been tailored for the PPro/PII in particular,
-and will not perform particuarly well on a Pentium.
-
-If you are using an assembler other than GNU as, you will have to
-translate match.S to use your assembler's syntax. (Have fun.)
-
-Brian Raiter
-breadbox@muppetlabs.com
-April, 1998
-
-
-Added for zlib 1.1.3:
-
-The patches come from
-http://www.muppetlabs.com/~breadbox/software/assembly.html
-
-To compile zlib with this asm file, copy match.S to the zlib directory
-then do:
-
-CFLAGS="-O3 -DASMV" ./configure
-make OBJA=match.o
+++ /dev/null
-/* match.s -- Pentium-Pro-optimized version of longest_match()
- * Written for zlib 1.1.2
- * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
- *
- * This is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License.
- */
-
-#ifndef NO_UNDERLINE
-#define match_init _match_init
-#define longest_match _longest_match
-#endif
-
-#define MAX_MATCH (258)
-#define MIN_MATCH (3)
-#define MIN_LOOKAHEAD (MAX_MATCH + MIN_MATCH + 1)
-#define MAX_MATCH_8 ((MAX_MATCH + 7) & ~7)
-
-/* stack frame offsets */
-
-#define chainlenwmask 0 /* high word: current chain len */
- /* low word: s->wmask */
-#define window 4 /* local copy of s->window */
-#define windowbestlen 8 /* s->window + bestlen */
-#define scanstart 16 /* first two bytes of string */
-#define scanend 12 /* last two bytes of string */
-#define scanalign 20 /* dword-misalignment of string */
-#define nicematch 24 /* a good enough match size */
-#define bestlen 28 /* size of best match so far */
-#define scan 32 /* ptr to string wanting match */
-
-#define LocalVarsSize (36)
-/* saved ebx 36 */
-/* saved edi 40 */
-/* saved esi 44 */
-/* saved ebp 48 */
-/* return address 52 */
-#define deflatestate 56 /* the function arguments */
-#define curmatch 60
-
-/* All the +zlib1222add offsets are due to the addition of fields
- * in zlib in the deflate_state structure since the asm code was first written
- * (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
- * (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
- * if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
- */
-
-#define zlib1222add (8)
-
-#define dsWSize (36+zlib1222add)
-#define dsWMask (44+zlib1222add)
-#define dsWindow (48+zlib1222add)
-#define dsPrev (56+zlib1222add)
-#define dsMatchLen (88+zlib1222add)
-#define dsPrevMatch (92+zlib1222add)
-#define dsStrStart (100+zlib1222add)
-#define dsMatchStart (104+zlib1222add)
-#define dsLookahead (108+zlib1222add)
-#define dsPrevLen (112+zlib1222add)
-#define dsMaxChainLen (116+zlib1222add)
-#define dsGoodMatch (132+zlib1222add)
-#define dsNiceMatch (136+zlib1222add)
-
-
-.file "match.S"
-
-.globl match_init, longest_match
-
-.text
-
-/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
-
-longest_match:
-
-/* Save registers that the compiler may be using, and adjust %esp to */
-/* make room for our stack frame. */
-
- pushl %ebp
- pushl %edi
- pushl %esi
- pushl %ebx
- subl $LocalVarsSize, %esp
-
-/* Retrieve the function arguments. %ecx will hold cur_match */
-/* throughout the entire function. %edx will hold the pointer to the */
-/* deflate_state structure during the function's setup (before */
-/* entering the main loop). */
-
- movl deflatestate(%esp), %edx
- movl curmatch(%esp), %ecx
-
-/* uInt wmask = s->w_mask; */
-/* unsigned chain_length = s->max_chain_length; */
-/* if (s->prev_length >= s->good_match) { */
-/* chain_length >>= 2; */
-/* } */
-
- movl dsPrevLen(%edx), %eax
- movl dsGoodMatch(%edx), %ebx
- cmpl %ebx, %eax
- movl dsWMask(%edx), %eax
- movl dsMaxChainLen(%edx), %ebx
- jl LastMatchGood
- shrl $2, %ebx
-LastMatchGood:
-
-/* chainlen is decremented once beforehand so that the function can */
-/* use the sign flag instead of the zero flag for the exit test. */
-/* It is then shifted into the high word, to make room for the wmask */
-/* value, which it will always accompany. */
-
- decl %ebx
- shll $16, %ebx
- orl %eax, %ebx
- movl %ebx, chainlenwmask(%esp)
-
-/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; */
-
- movl dsNiceMatch(%edx), %eax
- movl dsLookahead(%edx), %ebx
- cmpl %eax, %ebx
- jl LookaheadLess
- movl %eax, %ebx
-LookaheadLess: movl %ebx, nicematch(%esp)
-
-/* register Bytef *scan = s->window + s->strstart; */
-
- movl dsWindow(%edx), %esi
- movl %esi, window(%esp)
- movl dsStrStart(%edx), %ebp
- lea (%esi,%ebp), %edi
- movl %edi, scan(%esp)
-
-/* Determine how many bytes the scan ptr is off from being */
-/* dword-aligned. */
-
- movl %edi, %eax
- negl %eax
- andl $3, %eax
- movl %eax, scanalign(%esp)
-
-/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */
-/* s->strstart - (IPos)MAX_DIST(s) : NIL; */
-
- movl dsWSize(%edx), %eax
- subl $MIN_LOOKAHEAD, %eax
- subl %eax, %ebp
- jg LimitPositive
- xorl %ebp, %ebp
-LimitPositive:
-
-/* int best_len = s->prev_length; */
-
- movl dsPrevLen(%edx), %eax
- movl %eax, bestlen(%esp)
-
-/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
-
- addl %eax, %esi
- movl %esi, windowbestlen(%esp)
-
-/* register ush scan_start = *(ushf*)scan; */
-/* register ush scan_end = *(ushf*)(scan+best_len-1); */
-/* Posf *prev = s->prev; */
-
- movzwl (%edi), %ebx
- movl %ebx, scanstart(%esp)
- movzwl -1(%edi,%eax), %ebx
- movl %ebx, scanend(%esp)
- movl dsPrev(%edx), %edi
-
-/* Jump into the main loop. */
-
- movl chainlenwmask(%esp), %edx
- jmp LoopEntry
-
-.balign 16
-
-/* do {
- * match = s->window + cur_match;
- * if (*(ushf*)(match+best_len-1) != scan_end ||
- * *(ushf*)match != scan_start) continue;
- * [...]
- * } while ((cur_match = prev[cur_match & wmask]) > limit
- * && --chain_length != 0);
- *
- * Here is the inner loop of the function. The function will spend the
- * majority of its time in this loop, and majority of that time will
- * be spent in the first ten instructions.
- *
- * Within this loop:
- * %ebx = scanend
- * %ecx = curmatch
- * %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
- * %esi = windowbestlen - i.e., (window + bestlen)
- * %edi = prev
- * %ebp = limit
- */
-LookupLoop:
- andl %edx, %ecx
- movzwl (%edi,%ecx,2), %ecx
- cmpl %ebp, %ecx
- jbe LeaveNow
- subl $0x00010000, %edx
- js LeaveNow
-LoopEntry: movzwl -1(%esi,%ecx), %eax
- cmpl %ebx, %eax
- jnz LookupLoop
- movl window(%esp), %eax
- movzwl (%eax,%ecx), %eax
- cmpl scanstart(%esp), %eax
- jnz LookupLoop
-
-/* Store the current value of chainlen. */
-
- movl %edx, chainlenwmask(%esp)
-
-/* Point %edi to the string under scrutiny, and %esi to the string we */
-/* are hoping to match it up with. In actuality, %esi and %edi are */
-/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */
-/* initialized to -(MAX_MATCH_8 - scanalign). */
-
- movl window(%esp), %esi
- movl scan(%esp), %edi
- addl %ecx, %esi
- movl scanalign(%esp), %eax
- movl $(-MAX_MATCH_8), %edx
- lea MAX_MATCH_8(%edi,%eax), %edi
- lea MAX_MATCH_8(%esi,%eax), %esi
-
-/* Test the strings for equality, 8 bytes at a time. At the end,
- * adjust %edx so that it is offset to the exact byte that mismatched.
- *
- * We already know at this point that the first three bytes of the
- * strings match each other, and they can be safely passed over before
- * starting the compare loop. So what this code does is skip over 0-3
- * bytes, as much as necessary in order to dword-align the %edi
- * pointer. (%esi will still be misaligned three times out of four.)
- *
- * It should be confessed that this loop usually does not represent
- * much of the total running time. Replacing it with a more
- * straightforward "rep cmpsb" would not drastically degrade
- * performance.
- */
-LoopCmps:
- movl (%esi,%edx), %eax
- xorl (%edi,%edx), %eax
- jnz LeaveLoopCmps
- movl 4(%esi,%edx), %eax
- xorl 4(%edi,%edx), %eax
- jnz LeaveLoopCmps4
- addl $8, %edx
- jnz LoopCmps
- jmp LenMaximum
-LeaveLoopCmps4: addl $4, %edx
-LeaveLoopCmps: testl $0x0000FFFF, %eax
- jnz LenLower
- addl $2, %edx
- shrl $16, %eax
-LenLower: subb $1, %al
- adcl $0, %edx
-
-/* Calculate the length of the match. If it is longer than MAX_MATCH, */
-/* then automatically accept it as the best possible match and leave. */
-
- lea (%edi,%edx), %eax
- movl scan(%esp), %edi
- subl %edi, %eax
- cmpl $MAX_MATCH, %eax
- jge LenMaximum
-
-/* If the length of the match is not longer than the best match we */
-/* have so far, then forget it and return to the lookup loop. */
-
- movl deflatestate(%esp), %edx
- movl bestlen(%esp), %ebx
- cmpl %ebx, %eax
- jg LongerMatch
- movl windowbestlen(%esp), %esi
- movl dsPrev(%edx), %edi
- movl scanend(%esp), %ebx
- movl chainlenwmask(%esp), %edx
- jmp LookupLoop
-
-/* s->match_start = cur_match; */
-/* best_len = len; */
-/* if (len >= nice_match) break; */
-/* scan_end = *(ushf*)(scan+best_len-1); */
-
-LongerMatch: movl nicematch(%esp), %ebx
- movl %eax, bestlen(%esp)
- movl %ecx, dsMatchStart(%edx)
- cmpl %ebx, %eax
- jge LeaveNow
- movl window(%esp), %esi
- addl %eax, %esi
- movl %esi, windowbestlen(%esp)
- movzwl -1(%edi,%eax), %ebx
- movl dsPrev(%edx), %edi
- movl %ebx, scanend(%esp)
- movl chainlenwmask(%esp), %edx
- jmp LookupLoop
-
-/* Accept the current string, with the maximum possible length. */
-
-LenMaximum: movl deflatestate(%esp), %edx
- movl $MAX_MATCH, bestlen(%esp)
- movl %ecx, dsMatchStart(%edx)
-
-/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */
-/* return s->lookahead; */
-
-LeaveNow:
- movl deflatestate(%esp), %edx
- movl bestlen(%esp), %ebx
- movl dsLookahead(%edx), %eax
- cmpl %eax, %ebx
- jg LookaheadRet
- movl %ebx, %eax
-LookaheadRet:
-
-/* Restore the stack and return from whence we came. */
-
- addl $LocalVarsSize, %esp
- popl %ebx
- popl %esi
- popl %edi
- popl %ebp
-match_init: ret
+++ /dev/null
-blast: blast.c blast.h
- cc -DTEST -o blast blast.c
-
-test: blast
- blast < test.pk | cmp - test.txt
-
-clean:
- rm -f blast blast.o
+++ /dev/null
-Read blast.h for purpose and usage.
-
-Mark Adler
-madler@alumni.caltech.edu
+++ /dev/null
-/* blast.c
- * Copyright (C) 2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in blast.h
- * version 1.1, 16 Feb 2003
- *
- * blast.c decompresses data compressed by the PKWare Compression Library.
- * This function provides functionality similar to the explode() function of
- * the PKWare library, hence the name "blast".
- *
- * This decompressor is based on the excellent format description provided by
- * Ben Rudiak-Gould in comp.compression on August 13, 2001. Interestingly, the
- * example Ben provided in the post is incorrect. The distance 110001 should
- * instead be 111000. When corrected, the example byte stream becomes:
- *
- * 00 04 82 24 25 8f 80 7f
- *
- * which decompresses to "AIAIAIAIAIAIA" (without the quotes).
- */
-
-/*
- * Change history:
- *
- * 1.0 12 Feb 2003 - First version
- * 1.1 16 Feb 2003 - Fixed distance check for > 4 GB uncompressed data
- */
-
-#include <setjmp.h> /* for setjmp(), longjmp(), and jmp_buf */
-#include "blast.h" /* prototype for blast() */
-
-#define local static /* for local function definitions */
-#define MAXBITS 13 /* maximum code length */
-#define MAXWIN 4096 /* maximum window size */
-
-/* input and output state */
-struct state {
- /* input state */
- blast_in infun; /* input function provided by user */
- void *inhow; /* opaque information passed to infun() */
- unsigned char *in; /* next input location */
- unsigned left; /* available input at in */
- int bitbuf; /* bit buffer */
- int bitcnt; /* number of bits in bit buffer */
-
- /* input limit error return state for bits() and decode() */
- jmp_buf env;
-
- /* output state */
- blast_out outfun; /* output function provided by user */
- void *outhow; /* opaque information passed to outfun() */
- unsigned next; /* index of next write location in out[] */
- int first; /* true to check distances (for first 4K) */
- unsigned char out[MAXWIN]; /* output buffer and sliding window */
-};
-
-/*
- * Return need bits from the input stream. This always leaves less than
- * eight bits in the buffer. bits() works properly for need == 0.
- *
- * Format notes:
- *
- * - Bits are stored in bytes from the least significant bit to the most
- * significant bit. Therefore bits are dropped from the bottom of the bit
- * buffer, using shift right, and new bytes are appended to the top of the
- * bit buffer, using shift left.
- */
-local int bits(struct state *s, int need)
-{
- int val; /* bit accumulator */
-
- /* load at least need bits into val */
- val = s->bitbuf;
- while (s->bitcnt < need) {
- if (s->left == 0) {
- s->left = s->infun(s->inhow, &(s->in));
- if (s->left == 0) longjmp(s->env, 1); /* out of input */
- }
- val |= (int)(*(s->in)++) << s->bitcnt; /* load eight bits */
- s->left--;
- s->bitcnt += 8;
- }
-
- /* drop need bits and update buffer, always zero to seven bits left */
- s->bitbuf = val >> need;
- s->bitcnt -= need;
-
- /* return need bits, zeroing the bits above that */
- return val & ((1 << need) - 1);
-}
-
-/*
- * Huffman code decoding tables. count[1..MAXBITS] is the number of symbols of
- * each length, which for a canonical code are stepped through in order.
- * symbol[] are the symbol values in canonical order, where the number of
- * entries is the sum of the counts in count[]. The decoding process can be
- * seen in the function decode() below.
- */
-struct huffman {
- short *count; /* number of symbols of each length */
- short *symbol; /* canonically ordered symbols */
-};
-
-/*
- * Decode a code from the stream s using huffman table h. Return the symbol or
- * a negative value if there is an error. If all of the lengths are zero, i.e.
- * an empty code, or if the code is incomplete and an invalid code is received,
- * then -9 is returned after reading MAXBITS bits.
- *
- * Format notes:
- *
- * - The codes as stored in the compressed data are bit-reversed relative to
- * a simple integer ordering of codes of the same lengths. Hence below the
- * bits are pulled from the compressed data one at a time and used to
- * build the code value reversed from what is in the stream in order to
- * permit simple integer comparisons for decoding.
- *
- * - The first code for the shortest length is all ones. Subsequent codes of
- * the same length are simply integer decrements of the previous code. When
- * moving up a length, a one bit is appended to the code. For a complete
- * code, the last code of the longest length will be all zeros. To support
- * this ordering, the bits pulled during decoding are inverted to apply the
- * more "natural" ordering starting with all zeros and incrementing.
- */
-local int decode(struct state *s, struct huffman *h)
-{
- int len; /* current number of bits in code */
- int code; /* len bits being decoded */
- int first; /* first code of length len */
- int count; /* number of codes of length len */
- int index; /* index of first code of length len in symbol table */
- int bitbuf; /* bits from stream */
- int left; /* bits left in next or left to process */
- short *next; /* next number of codes */
-
- bitbuf = s->bitbuf;
- left = s->bitcnt;
- code = first = index = 0;
- len = 1;
- next = h->count + 1;
- while (1) {
- while (left--) {
- code |= (bitbuf & 1) ^ 1; /* invert code */
- bitbuf >>= 1;
- count = *next++;
- if (code < first + count) { /* if length len, return symbol */
- s->bitbuf = bitbuf;
- s->bitcnt = (s->bitcnt - len) & 7;
- return h->symbol[index + (code - first)];
- }
- index += count; /* else update for next length */
- first += count;
- first <<= 1;
- code <<= 1;
- len++;
- }
- left = (MAXBITS+1) - len;
- if (left == 0) break;
- if (s->left == 0) {
- s->left = s->infun(s->inhow, &(s->in));
- if (s->left == 0) longjmp(s->env, 1); /* out of input */
- }
- bitbuf = *(s->in)++;
- s->left--;
- if (left > 8) left = 8;
- }
- return -9; /* ran out of codes */
-}
-
-/*
- * Given a list of repeated code lengths rep[0..n-1], where each byte is a
- * count (high four bits + 1) and a code length (low four bits), generate the
- * list of code lengths. This compaction reduces the size of the object code.
- * Then given the list of code lengths length[0..n-1] representing a canonical
- * Huffman code for n symbols, construct the tables required to decode those
- * codes. Those tables are the number of codes of each length, and the symbols
- * sorted by length, retaining their original order within each length. The
- * return value is zero for a complete code set, negative for an over-
- * subscribed code set, and positive for an incomplete code set. The tables
- * can be used if the return value is zero or positive, but they cannot be used
- * if the return value is negative. If the return value is zero, it is not
- * possible for decode() using that table to return an error--any stream of
- * enough bits will resolve to a symbol. If the return value is positive, then
- * it is possible for decode() using that table to return an error for received
- * codes past the end of the incomplete lengths.
- */
-local int construct(struct huffman *h, const unsigned char *rep, int n)
-{
- int symbol; /* current symbol when stepping through length[] */
- int len; /* current length when stepping through h->count[] */
- int left; /* number of possible codes left of current length */
- short offs[MAXBITS+1]; /* offsets in symbol table for each length */
- short length[256]; /* code lengths */
-
- /* convert compact repeat counts into symbol bit length list */
- symbol = 0;
- do {
- len = *rep++;
- left = (len >> 4) + 1;
- len &= 15;
- do {
- length[symbol++] = len;
- } while (--left);
- } while (--n);
- n = symbol;
-
- /* count number of codes of each length */
- for (len = 0; len <= MAXBITS; len++)
- h->count[len] = 0;
- for (symbol = 0; symbol < n; symbol++)
- (h->count[length[symbol]])++; /* assumes lengths are within bounds */
- if (h->count[0] == n) /* no codes! */
- return 0; /* complete, but decode() will fail */
-
- /* check for an over-subscribed or incomplete set of lengths */
- left = 1; /* one possible code of zero length */
- for (len = 1; len <= MAXBITS; len++) {
- left <<= 1; /* one more bit, double codes left */
- left -= h->count[len]; /* deduct count from possible codes */
- if (left < 0) return left; /* over-subscribed--return negative */
- } /* left > 0 means incomplete */
-
- /* generate offsets into symbol table for each length for sorting */
- offs[1] = 0;
- for (len = 1; len < MAXBITS; len++)
- offs[len + 1] = offs[len] + h->count[len];
-
- /*
- * put symbols in table sorted by length, by symbol order within each
- * length
- */
- for (symbol = 0; symbol < n; symbol++)
- if (length[symbol] != 0)
- h->symbol[offs[length[symbol]]++] = symbol;
-
- /* return zero for complete set, positive for incomplete set */
- return left;
-}
-
-/*
- * Decode PKWare Compression Library stream.
- *
- * Format notes:
- *
- * - First byte is 0 if literals are uncoded or 1 if they are coded. Second
- * byte is 4, 5, or 6 for the number of extra bits in the distance code.
- * This is the base-2 logarithm of the dictionary size minus six.
- *
- * - Compressed data is a combination of literals and length/distance pairs
- * terminated by an end code. Literals are either Huffman coded or
- * uncoded bytes. A length/distance pair is a coded length followed by a
- * coded distance to represent a string that occurs earlier in the
- * uncompressed data that occurs again at the current location.
- *
- * - A bit preceding a literal or length/distance pair indicates which comes
- * next, 0 for literals, 1 for length/distance.
- *
- * - If literals are uncoded, then the next eight bits are the literal, in the
- * normal bit order in th stream, i.e. no bit-reversal is needed. Similarly,
- * no bit reversal is needed for either the length extra bits or the distance
- * extra bits.
- *
- * - Literal bytes are simply written to the output. A length/distance pair is
- * an instruction to copy previously uncompressed bytes to the output. The
- * copy is from distance bytes back in the output stream, copying for length
- * bytes.
- *
- * - Distances pointing before the beginning of the output data are not
- * permitted.
- *
- * - Overlapped copies, where the length is greater than the distance, are
- * allowed and common. For example, a distance of one and a length of 518
- * simply copies the last byte 518 times. A distance of four and a length of
- * twelve copies the last four bytes three times. A simple forward copy
- * ignoring whether the length is greater than the distance or not implements
- * this correctly.
- */
-local int decomp(struct state *s)
-{
- int lit; /* true if literals are coded */
- int dict; /* log2(dictionary size) - 6 */
- int symbol; /* decoded symbol, extra bits for distance */
- int len; /* length for copy */
- int dist; /* distance for copy */
- int copy; /* copy counter */
- unsigned char *from, *to; /* copy pointers */
- static int virgin = 1; /* build tables once */
- static short litcnt[MAXBITS+1], litsym[256]; /* litcode memory */
- static short lencnt[MAXBITS+1], lensym[16]; /* lencode memory */
- static short distcnt[MAXBITS+1], distsym[64]; /* distcode memory */
- static struct huffman litcode = {litcnt, litsym}; /* length code */
- static struct huffman lencode = {lencnt, lensym}; /* length code */
- static struct huffman distcode = {distcnt, distsym};/* distance code */
- /* bit lengths of literal codes */
- static const unsigned char litlen[] = {
- 11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
- 9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
- 7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
- 8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
- 44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
- 44, 173};
- /* bit lengths of length codes 0..15 */
- static const unsigned char lenlen[] = {2, 35, 36, 53, 38, 23};
- /* bit lengths of distance codes 0..63 */
- static const unsigned char distlen[] = {2, 20, 53, 230, 247, 151, 248};
- static const short base[16] = { /* base for length codes */
- 3, 2, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 136, 264};
- static const char extra[16] = { /* extra bits for length codes */
- 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8};
-
- /* set up decoding tables (once--might not be thread-safe) */
- if (virgin) {
- construct(&litcode, litlen, sizeof(litlen));
- construct(&lencode, lenlen, sizeof(lenlen));
- construct(&distcode, distlen, sizeof(distlen));
- virgin = 0;
- }
-
- /* read header */
- lit = bits(s, 8);
- if (lit > 1) return -1;
- dict = bits(s, 8);
- if (dict < 4 || dict > 6) return -2;
-
- /* decode literals and length/distance pairs */
- do {
- if (bits(s, 1)) {
- /* get length */
- symbol = decode(s, &lencode);
- len = base[symbol] + bits(s, extra[symbol]);
- if (len == 519) break; /* end code */
-
- /* get distance */
- symbol = len == 2 ? 2 : dict;
- dist = decode(s, &distcode) << symbol;
- dist += bits(s, symbol);
- dist++;
- if (s->first && dist > s->next)
- return -3; /* distance too far back */
-
- /* copy length bytes from distance bytes back */
- do {
- to = s->out + s->next;
- from = to - dist;
- copy = MAXWIN;
- if (s->next < dist) {
- from += copy;
- copy = dist;
- }
- copy -= s->next;
- if (copy > len) copy = len;
- len -= copy;
- s->next += copy;
- do {
- *to++ = *from++;
- } while (--copy);
- if (s->next == MAXWIN) {
- if (s->outfun(s->outhow, s->out, s->next)) return 1;
- s->next = 0;
- s->first = 0;
- }
- } while (len != 0);
- }
- else {
- /* get literal and write it */
- symbol = lit ? decode(s, &litcode) : bits(s, 8);
- s->out[s->next++] = symbol;
- if (s->next == MAXWIN) {
- if (s->outfun(s->outhow, s->out, s->next)) return 1;
- s->next = 0;
- s->first = 0;
- }
- }
- } while (1);
- return 0;
-}
-
-/* See comments in blast.h */
-int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow)
-{
- struct state s; /* input/output state */
- int err; /* return value */
-
- /* initialize input state */
- s.infun = infun;
- s.inhow = inhow;
- s.left = 0;
- s.bitbuf = 0;
- s.bitcnt = 0;
-
- /* initialize output state */
- s.outfun = outfun;
- s.outhow = outhow;
- s.next = 0;
- s.first = 1;
-
- /* return if bits() or decode() tries to read past available input */
- if (setjmp(s.env) != 0) /* if came back here via longjmp(), */
- err = 2; /* then skip decomp(), return error */
- else
- err = decomp(&s); /* decompress */
-
- /* write any leftover output and update the error code if needed */
- if (err != 1 && s.next && s.outfun(s.outhow, s.out, s.next) && err == 0)
- err = 1;
- return err;
-}
-
-#ifdef TEST
-/* Example of how to use blast() */
-#include <stdio.h>
-#include <stdlib.h>
-
-#define CHUNK 16384
-
-local unsigned inf(void *how, unsigned char **buf)
-{
- static unsigned char hold[CHUNK];
-
- *buf = hold;
- return fread(hold, 1, CHUNK, (FILE *)how);
-}
-
-local int outf(void *how, unsigned char *buf, unsigned len)
-{
- return fwrite(buf, 1, len, (FILE *)how) != len;
-}
-
-/* Decompress a PKWare Compression Library stream from stdin to stdout */
-int main(void)
-{
- int ret, n;
-
- /* decompress to stdout */
- ret = blast(inf, stdin, outf, stdout);
- if (ret != 0) fprintf(stderr, "blast error: %d\n", ret);
-
- /* see if there are any leftover bytes */
- n = 0;
- while (getchar() != EOF) n++;
- if (n) fprintf(stderr, "blast warning: %d unused bytes of input\n", n);
-
- /* return blast() error code */
- return ret;
-}
-#endif
+++ /dev/null
-/* blast.h -- interface for blast.c
- Copyright (C) 2003 Mark Adler
- version 1.1, 16 Feb 2003
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Mark Adler madler@alumni.caltech.edu
- */
-
-
-/*
- * blast() decompresses the PKWare Data Compression Library (DCL) compressed
- * format. It provides the same functionality as the explode() function in
- * that library. (Note: PKWare overused the "implode" verb, and the format
- * used by their library implode() function is completely different and
- * incompatible with the implode compression method supported by PKZIP.)
- */
-
-
-typedef unsigned (*blast_in)(void *how, unsigned char **buf);
-typedef int (*blast_out)(void *how, unsigned char *buf, unsigned len);
-/* Definitions for input/output functions passed to blast(). See below for
- * what the provided functions need to do.
- */
-
-
-int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow);
-/* Decompress input to output using the provided infun() and outfun() calls.
- * On success, the return value of blast() is zero. If there is an error in
- * the source data, i.e. it is not in the proper format, then a negative value
- * is returned. If there is not enough input available or there is not enough
- * output space, then a positive error is returned.
- *
- * The input function is invoked: len = infun(how, &buf), where buf is set by
- * infun() to point to the input buffer, and infun() returns the number of
- * available bytes there. If infun() returns zero, then blast() returns with
- * an input error. (blast() only asks for input if it needs it.) inhow is for
- * use by the application to pass an input descriptor to infun(), if desired.
- *
- * The output function is invoked: err = outfun(how, buf, len), where the bytes
- * to be written are buf[0..len-1]. If err is not zero, then blast() returns
- * with an output error. outfun() is always called with len <= 4096. outhow
- * is for use by the application to pass an output descriptor to outfun(), if
- * desired.
- *
- * The return codes are:
- *
- * 2: ran out of input before completing decompression
- * 1: output error before completing decompression
- * 0: successful decompression
- * -1: literal flag not zero or one
- * -2: dictionary size not in 4..6
- * -3: distance is too far back
- *
- * At the bottom of blast.c is an example program that uses blast() that can be
- * compiled to produce a command-line decompression filter by defining TEST.
- */
+++ /dev/null
-AIAIAIAIAIAIA
\ No newline at end of file
+++ /dev/null
-{*******************************************************}
-{ }
-{ Borland Delphi Supplemental Components }
-{ ZLIB Data Compression Interface Unit }
-{ }
-{ Copyright (c) 1997,99 Borland Corporation }
-{ }
-{*******************************************************}
-
-{ Updated for zlib 1.2.x by Cosmin Truta <cosmint@cs.ubbcluj.ro> }
-
-unit ZLib;
-
-interface
-
-uses SysUtils, Classes;
-
-type
- TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
- TFree = procedure (AppData, Block: Pointer); cdecl;
-
- // Internal structure. Ignore.
- TZStreamRec = packed record
- next_in: PChar; // next input byte
- avail_in: Integer; // number of bytes available at next_in
- total_in: Longint; // total nb of input bytes read so far
-
- next_out: PChar; // next output byte should be put here
- avail_out: Integer; // remaining free space at next_out
- total_out: Longint; // total nb of bytes output so far
-
- msg: PChar; // last error message, NULL if no error
- internal: Pointer; // not visible by applications
-
- zalloc: TAlloc; // used to allocate the internal state
- zfree: TFree; // used to free the internal state
- AppData: Pointer; // private data object passed to zalloc and zfree
-
- data_type: Integer; // best guess about the data type: ascii or binary
- adler: Longint; // adler32 value of the uncompressed data
- reserved: Longint; // reserved for future use
- end;
-
- // Abstract ancestor class
- TCustomZlibStream = class(TStream)
- private
- FStrm: TStream;
- FStrmPos: Integer;
- FOnProgress: TNotifyEvent;
- FZRec: TZStreamRec;
- FBuffer: array [Word] of Char;
- protected
- procedure Progress(Sender: TObject); dynamic;
- property OnProgress: TNotifyEvent read FOnProgress write FOnProgress;
- constructor Create(Strm: TStream);
- end;
-
-{ TCompressionStream compresses data on the fly as data is written to it, and
- stores the compressed data to another stream.
-
- TCompressionStream is write-only and strictly sequential. Reading from the
- stream will raise an exception. Using Seek to move the stream pointer
- will raise an exception.
-
- Output data is cached internally, written to the output stream only when
- the internal output buffer is full. All pending output data is flushed
- when the stream is destroyed.
-
- The Position property returns the number of uncompressed bytes of
- data that have been written to the stream so far.
-
- CompressionRate returns the on-the-fly percentage by which the original
- data has been compressed: (1 - (CompressedBytes / UncompressedBytes)) * 100
- If raw data size = 100 and compressed data size = 25, the CompressionRate
- is 75%
-
- The OnProgress event is called each time the output buffer is filled and
- written to the output stream. This is useful for updating a progress
- indicator when you are writing a large chunk of data to the compression
- stream in a single call.}
-
-
- TCompressionLevel = (clNone, clFastest, clDefault, clMax);
-
- TCompressionStream = class(TCustomZlibStream)
- private
- function GetCompressionRate: Single;
- public
- constructor Create(CompressionLevel: TCompressionLevel; Dest: TStream);
- destructor Destroy; override;
- function Read(var Buffer; Count: Longint): Longint; override;
- function Write(const Buffer; Count: Longint): Longint; override;
- function Seek(Offset: Longint; Origin: Word): Longint; override;
- property CompressionRate: Single read GetCompressionRate;
- property OnProgress;
- end;
-
-{ TDecompressionStream decompresses data on the fly as data is read from it.
-
- Compressed data comes from a separate source stream. TDecompressionStream
- is read-only and unidirectional; you can seek forward in the stream, but not
- backwards. The special case of setting the stream position to zero is
- allowed. Seeking forward decompresses data until the requested position in
- the uncompressed data has been reached. Seeking backwards, seeking relative
- to the end of the stream, requesting the size of the stream, and writing to
- the stream will raise an exception.
-
- The Position property returns the number of bytes of uncompressed data that
- have been read from the stream so far.
-
- The OnProgress event is called each time the internal input buffer of
- compressed data is exhausted and the next block is read from the input stream.
- This is useful for updating a progress indicator when you are reading a
- large chunk of data from the decompression stream in a single call.}
-
- TDecompressionStream = class(TCustomZlibStream)
- public
- constructor Create(Source: TStream);
- destructor Destroy; override;
- function Read(var Buffer; Count: Longint): Longint; override;
- function Write(const Buffer; Count: Longint): Longint; override;
- function Seek(Offset: Longint; Origin: Word): Longint; override;
- property OnProgress;
- end;
-
-
-
-{ CompressBuf compresses data, buffer to buffer, in one call.
- In: InBuf = ptr to compressed data
- InBytes = number of bytes in InBuf
- Out: OutBuf = ptr to newly allocated buffer containing decompressed data
- OutBytes = number of bytes in OutBuf }
-procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
- out OutBuf: Pointer; out OutBytes: Integer);
-
-
-{ DecompressBuf decompresses data, buffer to buffer, in one call.
- In: InBuf = ptr to compressed data
- InBytes = number of bytes in InBuf
- OutEstimate = zero, or est. size of the decompressed data
- Out: OutBuf = ptr to newly allocated buffer containing decompressed data
- OutBytes = number of bytes in OutBuf }
-procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
- OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
-
-{ DecompressToUserBuf decompresses data, buffer to buffer, in one call.
- In: InBuf = ptr to compressed data
- InBytes = number of bytes in InBuf
- Out: OutBuf = ptr to user-allocated buffer to contain decompressed data
- BufSize = number of bytes in OutBuf }
-procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
- const OutBuf: Pointer; BufSize: Integer);
-
-const
- zlib_version = '1.2.3';
-
-type
- EZlibError = class(Exception);
- ECompressionError = class(EZlibError);
- EDecompressionError = class(EZlibError);
-
-implementation
-
-uses ZLibConst;
-
-const
- Z_NO_FLUSH = 0;
- Z_PARTIAL_FLUSH = 1;
- Z_SYNC_FLUSH = 2;
- Z_FULL_FLUSH = 3;
- Z_FINISH = 4;
-
- Z_OK = 0;
- Z_STREAM_END = 1;
- Z_NEED_DICT = 2;
- Z_ERRNO = (-1);
- Z_STREAM_ERROR = (-2);
- Z_DATA_ERROR = (-3);
- Z_MEM_ERROR = (-4);
- Z_BUF_ERROR = (-5);
- Z_VERSION_ERROR = (-6);
-
- Z_NO_COMPRESSION = 0;
- Z_BEST_SPEED = 1;
- Z_BEST_COMPRESSION = 9;
- Z_DEFAULT_COMPRESSION = (-1);
-
- Z_FILTERED = 1;
- Z_HUFFMAN_ONLY = 2;
- Z_RLE = 3;
- Z_DEFAULT_STRATEGY = 0;
-
- Z_BINARY = 0;
- Z_ASCII = 1;
- Z_UNKNOWN = 2;
-
- Z_DEFLATED = 8;
-
-
-{$L adler32.obj}
-{$L compress.obj}
-{$L crc32.obj}
-{$L deflate.obj}
-{$L infback.obj}
-{$L inffast.obj}
-{$L inflate.obj}
-{$L inftrees.obj}
-{$L trees.obj}
-{$L uncompr.obj}
-{$L zutil.obj}
-
-procedure adler32; external;
-procedure compressBound; external;
-procedure crc32; external;
-procedure deflateInit2_; external;
-procedure deflateParams; external;
-
-function _malloc(Size: Integer): Pointer; cdecl;
-begin
- Result := AllocMem(Size);
-end;
-
-procedure _free(Block: Pointer); cdecl;
-begin
- FreeMem(Block);
-end;
-
-procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
-begin
- FillChar(P^, count, B);
-end;
-
-procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
-begin
- Move(source^, dest^, count);
-end;
-
-
-
-// deflate compresses data
-function deflateInit_(var strm: TZStreamRec; level: Integer; version: PChar;
- recsize: Integer): Integer; external;
-function deflate(var strm: TZStreamRec; flush: Integer): Integer; external;
-function deflateEnd(var strm: TZStreamRec): Integer; external;
-
-// inflate decompresses data
-function inflateInit_(var strm: TZStreamRec; version: PChar;
- recsize: Integer): Integer; external;
-function inflate(var strm: TZStreamRec; flush: Integer): Integer; external;
-function inflateEnd(var strm: TZStreamRec): Integer; external;
-function inflateReset(var strm: TZStreamRec): Integer; external;
-
-
-function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
-begin
-// GetMem(Result, Items*Size);
- Result := AllocMem(Items * Size);
-end;
-
-procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
-begin
- FreeMem(Block);
-end;
-
-{function zlibCheck(code: Integer): Integer;
-begin
- Result := code;
- if code < 0 then
- raise EZlibError.Create('error'); //!!
-end;}
-
-function CCheck(code: Integer): Integer;
-begin
- Result := code;
- if code < 0 then
- raise ECompressionError.Create('error'); //!!
-end;
-
-function DCheck(code: Integer): Integer;
-begin
- Result := code;
- if code < 0 then
- raise EDecompressionError.Create('error'); //!!
-end;
-
-procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
- out OutBuf: Pointer; out OutBytes: Integer);
-var
- strm: TZStreamRec;
- P: Pointer;
-begin
- FillChar(strm, sizeof(strm), 0);
- strm.zalloc := zlibAllocMem;
- strm.zfree := zlibFreeMem;
- OutBytes := ((InBytes + (InBytes div 10) + 12) + 255) and not 255;
- GetMem(OutBuf, OutBytes);
- try
- strm.next_in := InBuf;
- strm.avail_in := InBytes;
- strm.next_out := OutBuf;
- strm.avail_out := OutBytes;
- CCheck(deflateInit_(strm, Z_BEST_COMPRESSION, zlib_version, sizeof(strm)));
- try
- while CCheck(deflate(strm, Z_FINISH)) <> Z_STREAM_END do
- begin
- P := OutBuf;
- Inc(OutBytes, 256);
- ReallocMem(OutBuf, OutBytes);
- strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
- strm.avail_out := 256;
- end;
- finally
- CCheck(deflateEnd(strm));
- end;
- ReallocMem(OutBuf, strm.total_out);
- OutBytes := strm.total_out;
- except
- FreeMem(OutBuf);
- raise
- end;
-end;
-
-
-procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
- OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
-var
- strm: TZStreamRec;
- P: Pointer;
- BufInc: Integer;
-begin
- FillChar(strm, sizeof(strm), 0);
- strm.zalloc := zlibAllocMem;
- strm.zfree := zlibFreeMem;
- BufInc := (InBytes + 255) and not 255;
- if OutEstimate = 0 then
- OutBytes := BufInc
- else
- OutBytes := OutEstimate;
- GetMem(OutBuf, OutBytes);
- try
- strm.next_in := InBuf;
- strm.avail_in := InBytes;
- strm.next_out := OutBuf;
- strm.avail_out := OutBytes;
- DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
- try
- while DCheck(inflate(strm, Z_NO_FLUSH)) <> Z_STREAM_END do
- begin
- P := OutBuf;
- Inc(OutBytes, BufInc);
- ReallocMem(OutBuf, OutBytes);
- strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
- strm.avail_out := BufInc;
- end;
- finally
- DCheck(inflateEnd(strm));
- end;
- ReallocMem(OutBuf, strm.total_out);
- OutBytes := strm.total_out;
- except
- FreeMem(OutBuf);
- raise
- end;
-end;
-
-procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
- const OutBuf: Pointer; BufSize: Integer);
-var
- strm: TZStreamRec;
-begin
- FillChar(strm, sizeof(strm), 0);
- strm.zalloc := zlibAllocMem;
- strm.zfree := zlibFreeMem;
- strm.next_in := InBuf;
- strm.avail_in := InBytes;
- strm.next_out := OutBuf;
- strm.avail_out := BufSize;
- DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
- try
- if DCheck(inflate(strm, Z_FINISH)) <> Z_STREAM_END then
- raise EZlibError.CreateRes(@sTargetBufferTooSmall);
- finally
- DCheck(inflateEnd(strm));
- end;
-end;
-
-// TCustomZlibStream
-
-constructor TCustomZLibStream.Create(Strm: TStream);
-begin
- inherited Create;
- FStrm := Strm;
- FStrmPos := Strm.Position;
- FZRec.zalloc := zlibAllocMem;
- FZRec.zfree := zlibFreeMem;
-end;
-
-procedure TCustomZLibStream.Progress(Sender: TObject);
-begin
- if Assigned(FOnProgress) then FOnProgress(Sender);
-end;
-
-
-// TCompressionStream
-
-constructor TCompressionStream.Create(CompressionLevel: TCompressionLevel;
- Dest: TStream);
-const
- Levels: array [TCompressionLevel] of ShortInt =
- (Z_NO_COMPRESSION, Z_BEST_SPEED, Z_DEFAULT_COMPRESSION, Z_BEST_COMPRESSION);
-begin
- inherited Create(Dest);
- FZRec.next_out := FBuffer;
- FZRec.avail_out := sizeof(FBuffer);
- CCheck(deflateInit_(FZRec, Levels[CompressionLevel], zlib_version, sizeof(FZRec)));
-end;
-
-destructor TCompressionStream.Destroy;
-begin
- FZRec.next_in := nil;
- FZRec.avail_in := 0;
- try
- if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
- while (CCheck(deflate(FZRec, Z_FINISH)) <> Z_STREAM_END)
- and (FZRec.avail_out = 0) do
- begin
- FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
- FZRec.next_out := FBuffer;
- FZRec.avail_out := sizeof(FBuffer);
- end;
- if FZRec.avail_out < sizeof(FBuffer) then
- FStrm.WriteBuffer(FBuffer, sizeof(FBuffer) - FZRec.avail_out);
- finally
- deflateEnd(FZRec);
- end;
- inherited Destroy;
-end;
-
-function TCompressionStream.Read(var Buffer; Count: Longint): Longint;
-begin
- raise ECompressionError.CreateRes(@sInvalidStreamOp);
-end;
-
-function TCompressionStream.Write(const Buffer; Count: Longint): Longint;
-begin
- FZRec.next_in := @Buffer;
- FZRec.avail_in := Count;
- if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
- while (FZRec.avail_in > 0) do
- begin
- CCheck(deflate(FZRec, 0));
- if FZRec.avail_out = 0 then
- begin
- FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
- FZRec.next_out := FBuffer;
- FZRec.avail_out := sizeof(FBuffer);
- FStrmPos := FStrm.Position;
- Progress(Self);
- end;
- end;
- Result := Count;
-end;
-
-function TCompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
-begin
- if (Offset = 0) and (Origin = soFromCurrent) then
- Result := FZRec.total_in
- else
- raise ECompressionError.CreateRes(@sInvalidStreamOp);
-end;
-
-function TCompressionStream.GetCompressionRate: Single;
-begin
- if FZRec.total_in = 0 then
- Result := 0
- else
- Result := (1.0 - (FZRec.total_out / FZRec.total_in)) * 100.0;
-end;
-
-
-// TDecompressionStream
-
-constructor TDecompressionStream.Create(Source: TStream);
-begin
- inherited Create(Source);
- FZRec.next_in := FBuffer;
- FZRec.avail_in := 0;
- DCheck(inflateInit_(FZRec, zlib_version, sizeof(FZRec)));
-end;
-
-destructor TDecompressionStream.Destroy;
-begin
- FStrm.Seek(-FZRec.avail_in, 1);
- inflateEnd(FZRec);
- inherited Destroy;
-end;
-
-function TDecompressionStream.Read(var Buffer; Count: Longint): Longint;
-begin
- FZRec.next_out := @Buffer;
- FZRec.avail_out := Count;
- if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
- while (FZRec.avail_out > 0) do
- begin
- if FZRec.avail_in = 0 then
- begin
- FZRec.avail_in := FStrm.Read(FBuffer, sizeof(FBuffer));
- if FZRec.avail_in = 0 then
- begin
- Result := Count - FZRec.avail_out;
- Exit;
- end;
- FZRec.next_in := FBuffer;
- FStrmPos := FStrm.Position;
- Progress(Self);
- end;
- CCheck(inflate(FZRec, 0));
- end;
- Result := Count;
-end;
-
-function TDecompressionStream.Write(const Buffer; Count: Longint): Longint;
-begin
- raise EDecompressionError.CreateRes(@sInvalidStreamOp);
-end;
-
-function TDecompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
-var
- I: Integer;
- Buf: array [0..4095] of Char;
-begin
- if (Offset = 0) and (Origin = soFromBeginning) then
- begin
- DCheck(inflateReset(FZRec));
- FZRec.next_in := FBuffer;
- FZRec.avail_in := 0;
- FStrm.Position := 0;
- FStrmPos := 0;
- end
- else if ( (Offset >= 0) and (Origin = soFromCurrent)) or
- ( ((Offset - FZRec.total_out) > 0) and (Origin = soFromBeginning)) then
- begin
- if Origin = soFromBeginning then Dec(Offset, FZRec.total_out);
- if Offset > 0 then
- begin
- for I := 1 to Offset div sizeof(Buf) do
- ReadBuffer(Buf, sizeof(Buf));
- ReadBuffer(Buf, Offset mod sizeof(Buf));
- end;
- end
- else
- raise EDecompressionError.CreateRes(@sInvalidStreamOp);
- Result := FZRec.total_out;
-end;
-
-
-end.
+++ /dev/null
-unit ZLibConst;
-
-interface
-
-resourcestring
- sTargetBufferTooSmall = 'ZLib error: target buffer may be too small';
- sInvalidStreamOp = 'Invalid stream operation';
-
-implementation
-
-end.
+++ /dev/null
-
-Overview
-========
-
-This directory contains an update to the ZLib interface unit,
-distributed by Borland as a Delphi supplemental component.
-
-The original ZLib unit is Copyright (c) 1997,99 Borland Corp.,
-and is based on zlib version 1.0.4. There are a series of bugs
-and security problems associated with that old zlib version, and
-we recommend the users to update their ZLib unit.
-
-
-Summary of modifications
-========================
-
-- Improved makefile, adapted to zlib version 1.2.1.
-
-- Some field types from TZStreamRec are changed from Integer to
- Longint, for consistency with the zlib.h header, and for 64-bit
- readiness.
-
-- The zlib_version constant is updated.
-
-- The new Z_RLE strategy has its corresponding symbolic constant.
-
-- The allocation and deallocation functions and function types
- (TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl,
- and _malloc and _free are added as C RTL stubs. As a result,
- the original C sources of zlib can be compiled out of the box,
- and linked to the ZLib unit.
-
-
-Suggestions for improvements
-============================
-
-Currently, the ZLib unit provides only a limited wrapper around
-the zlib library, and much of the original zlib functionality is
-missing. Handling compressed file formats like ZIP/GZIP or PNG
-cannot be implemented without having this functionality.
-Applications that handle these formats are either using their own,
-duplicated code, or not using the ZLib unit at all.
-
-Here are a few suggestions:
-
-- Checksum class wrappers around adler32() and crc32(), similar
- to the Java classes that implement the java.util.zip.Checksum
- interface.
-
-- The ability to read and write raw deflate streams, without the
- zlib stream header and trailer. Raw deflate streams are used
- in the ZIP file format.
-
-- The ability to read and write gzip streams, used in the GZIP
- file format, and normally produced by the gzip program.
-
-- The ability to select a different compression strategy, useful
- to PNG and MNG image compression, and to multimedia compression
- in general. Besides the compression level
-
- TCompressionLevel = (clNone, clFastest, clDefault, clMax);
-
- which, in fact, could have used the 'z' prefix and avoided
- TColor-like symbols
-
- TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax);
-
- there could be a compression strategy
-
- TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle);
-
-- ZIP and GZIP stream handling via TStreams.
-
-
---
-Cosmin Truta <cosmint@cs.ubbcluj.ro>
+++ /dev/null
-# Makefile for zlib
-# For use with Delphi and C++ Builder under Win32
-# Updated for zlib 1.2.x by Cosmin Truta
-
-# ------------ Borland C++ ------------
-
-# This project uses the Delphi (fastcall/register) calling convention:
-LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
-
-CC = bcc32
-LD = bcc32
-AR = tlib
-# do not use "-pr" in CFLAGS
-CFLAGS = -a -d -k- -O2 $(LOC)
-LDFLAGS =
-
-
-# variables
-ZLIB_LIB = zlib.lib
-
-OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
-OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
-OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
-
-
-# targets
-all: $(ZLIB_LIB) example.exe minigzip.exe
-
-.c.obj:
- $(CC) -c $(CFLAGS) $*.c
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
-
-minigzip.obj: minigzip.c zlib.h zconf.h
-
-
-# For the sake of the old Borland make,
-# the command line is cut to fit in the MS-DOS 128 byte limit:
-$(ZLIB_LIB): $(OBJ1) $(OBJ2)
- -del $(ZLIB_LIB)
- $(AR) $(ZLIB_LIB) $(OBJP1)
- $(AR) $(ZLIB_LIB) $(OBJP2)
-
-
-# testing
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-example.exe: example.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
-
-minigzip.exe: minigzip.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
-
-
-# cleanup
-clean:
- -del *.obj
- -del *.exe
- -del *.lib
- -del *.tds
- -del zlib.bak
- -del foo.gz
-
+++ /dev/null
-<?xml version="1.0" encoding="utf-8" ?>\r
-<project name="DotZLib" default="build" basedir="./DotZLib">\r
- <description>A .Net wrapper library around ZLib1.dll</description>\r
-\r
- <property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />\r
- <property name="build.root" value="bin" />\r
- \r
- <property name="debug" value="true" />\r
- <property name="nunit" value="true" />\r
-\r
- <property name="build.folder" value="${build.root}/debug/" if="${debug}" />\r
- <property name="build.folder" value="${build.root}/release/" unless="${debug}" />\r
-\r
- <target name="clean" description="Remove all generated files">\r
- <delete dir="${build.root}" failonerror="false" />\r
- </target>\r
-\r
- <target name="build" description="compiles the source code">\r
- \r
- <mkdir dir="${build.folder}" />\r
- <csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">\r
- <references basedir="${nunit.location}">\r
- <includes if="${nunit}" name="nunit.framework.dll" />\r
- </references>\r
- <sources>\r
- <includes name="*.cs" />\r
- <excludes name="UnitTests.cs" unless="${nunit}" />\r
- </sources>\r
- <arg value="/d:nunit" if="${nunit}" />\r
- </csc>\r
- </target>\r
-\r
-</project>
\ No newline at end of file
+++ /dev/null
-Microsoft Visual Studio Solution File, Format Version 8.00\r
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"\r
- ProjectSection(ProjectDependencies) = postProject\r
- EndProjectSection\r
-EndProject\r
-Global\r
- GlobalSection(SolutionConfiguration) = preSolution\r
- Debug = Debug\r
- Release = Release\r
- EndGlobalSection\r
- GlobalSection(ProjectConfiguration) = postSolution\r
- {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET\r
- {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET\r
- {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET\r
- {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET\r
- EndGlobalSection\r
- GlobalSection(ExtensibilityGlobals) = postSolution\r
- EndGlobalSection\r
- GlobalSection(ExtensibilityAddIns) = postSolution\r
- EndGlobalSection\r
-EndGlobal\r
+++ /dev/null
-using System.Reflection;\r
-using System.Runtime.CompilerServices;\r
-\r
-//\r
-// General Information about an assembly is controlled through the following \r
-// set of attributes. Change these attribute values to modify the information\r
-// associated with an assembly.\r
-//\r
-[assembly: AssemblyTitle("DotZLib")]\r
-[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]\r
-[assembly: AssemblyConfiguration("")]\r
-[assembly: AssemblyCompany("Henrik Ravn")]\r
-[assembly: AssemblyProduct("")]\r
-[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]\r
-[assembly: AssemblyTrademark("")]\r
-[assembly: AssemblyCulture("")] \r
-\r
-//\r
-// Version information for an assembly consists of the following four values:\r
-//\r
-// Major Version\r
-// Minor Version \r
-// Build Number\r
-// Revision\r
-//\r
-// You can specify all the values or you can default the Revision and Build Numbers \r
-// by using the '*' as shown below:\r
-\r
-[assembly: AssemblyVersion("1.0.*")]\r
-\r
-//\r
-// In order to sign your assembly you must specify a key to use. Refer to the \r
-// Microsoft .NET Framework documentation for more information on assembly signing.\r
-//\r
-// Use the attributes below to control which key is used for signing. \r
-//\r
-// Notes: \r
-// (*) If no key is specified, the assembly is not signed.\r
-// (*) KeyName refers to a key that has been installed in the Crypto Service\r
-// Provider (CSP) on your machine. KeyFile refers to a file which contains\r
-// a key.\r
-// (*) If the KeyFile and the KeyName values are both specified, the \r
-// following processing occurs:\r
-// (1) If the KeyName can be found in the CSP, that key is used.\r
-// (2) If the KeyName does not exist and the KeyFile does exist, the key \r
-// in the KeyFile is installed into the CSP and used.\r
-// (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.\r
-// When specifying the KeyFile, the location of the KeyFile should be\r
-// relative to the project output directory which is\r
-// %Project Directory%\obj\<configuration>. For example, if your KeyFile is\r
-// located in the project directory, you would specify the AssemblyKeyFile \r
-// attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]\r
-// (*) Delay Signing is an advanced option - see the Microsoft .NET Framework\r
-// documentation for more information on this.\r
-//\r
-[assembly: AssemblyDelaySign(false)]\r
-[assembly: AssemblyKeyFile("")]\r
-[assembly: AssemblyKeyName("")]\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.Runtime.InteropServices;\r
-using System.Text;\r
-\r
-\r
-namespace DotZLib\r
-{\r
- #region ChecksumGeneratorBase\r
- /// <summary>\r
- /// Implements the common functionality needed for all <see cref="ChecksumGenerator"/>s\r
- /// </summary>\r
- /// <example></example>\r
- public abstract class ChecksumGeneratorBase : ChecksumGenerator\r
- {\r
- /// <summary>\r
- /// The value of the current checksum\r
- /// </summary>\r
- protected uint _current;\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the checksum generator base - the current checksum is \r
- /// set to zero\r
- /// </summary>\r
- public ChecksumGeneratorBase()\r
- {\r
- _current = 0;\r
- }\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the checksum generator basewith a specified value\r
- /// </summary>\r
- /// <param name="initialValue">The value to set the current checksum to</param>\r
- public ChecksumGeneratorBase(uint initialValue)\r
- {\r
- _current = initialValue;\r
- }\r
-\r
- /// <summary>\r
- /// Resets the current checksum to zero\r
- /// </summary>\r
- public void Reset() { _current = 0; }\r
-\r
- /// <summary>\r
- /// Gets the current checksum value\r
- /// </summary>\r
- public uint Value { get { return _current; } }\r
-\r
- /// <summary>\r
- /// Updates the current checksum with part of an array of bytes\r
- /// </summary>\r
- /// <param name="data">The data to update the checksum with</param>\r
- /// <param name="offset">Where in <c>data</c> to start updating</param>\r
- /// <param name="count">The number of bytes from <c>data</c> to use</param>\r
- /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>\r
- /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>\r
- /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>\r
- /// <remarks>All the other <c>Update</c> methods are implmeneted in terms of this one. \r
- /// This is therefore the only method a derived class has to implement</remarks>\r
- public abstract void Update(byte[] data, int offset, int count);\r
-\r
- /// <summary>\r
- /// Updates the current checksum with an array of bytes.\r
- /// </summary>\r
- /// <param name="data">The data to update the checksum with</param>\r
- public void Update(byte[] data)\r
- {\r
- Update(data, 0, data.Length);\r
- }\r
-\r
- /// <summary>\r
- /// Updates the current checksum with the data from a string\r
- /// </summary>\r
- /// <param name="data">The string to update the checksum with</param>\r
- /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>\r
- public void Update(string data)\r
- {\r
- Update(Encoding.UTF8.GetBytes(data));\r
- }\r
-\r
- /// <summary>\r
- /// Updates the current checksum with the data from a string, using a specific encoding\r
- /// </summary>\r
- /// <param name="data">The string to update the checksum with</param>\r
- /// <param name="encoding">The encoding to use</param>\r
- public void Update(string data, Encoding encoding)\r
- {\r
- Update(encoding.GetBytes(data));\r
- }\r
-\r
- }\r
- #endregion\r
-\r
- #region CRC32\r
- /// <summary>\r
- /// Implements a CRC32 checksum generator\r
- /// </summary>\r
- public sealed class CRC32Checksum : ChecksumGeneratorBase \r
- {\r
- #region DLL imports\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern uint crc32(uint crc, int data, uint length);\r
-\r
- #endregion\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the CRC32 checksum generator\r
- /// </summary>\r
- public CRC32Checksum() : base() {}\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the CRC32 checksum generator with a specified value\r
- /// </summary>\r
- /// <param name="initialValue">The value to set the current checksum to</param>\r
- public CRC32Checksum(uint initialValue) : base(initialValue) {}\r
-\r
- /// <summary>\r
- /// Updates the current checksum with part of an array of bytes\r
- /// </summary>\r
- /// <param name="data">The data to update the checksum with</param>\r
- /// <param name="offset">Where in <c>data</c> to start updating</param>\r
- /// <param name="count">The number of bytes from <c>data</c> to use</param>\r
- /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>\r
- /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>\r
- /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>\r
- public override void Update(byte[] data, int offset, int count)\r
- {\r
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();\r
- if ((offset+count) > data.Length) throw new ArgumentException();\r
- GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);\r
- try\r
- {\r
- _current = crc32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);\r
- }\r
- finally\r
- {\r
- hData.Free();\r
- }\r
- }\r
-\r
- }\r
- #endregion\r
-\r
- #region Adler\r
- /// <summary>\r
- /// Implements a checksum generator that computes the Adler checksum on data\r
- /// </summary>\r
- public sealed class AdlerChecksum : ChecksumGeneratorBase \r
- {\r
- #region DLL imports\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern uint adler32(uint adler, int data, uint length);\r
-\r
- #endregion\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the Adler checksum generator\r
- /// </summary>\r
- public AdlerChecksum() : base() {}\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the Adler checksum generator with a specified value\r
- /// </summary>\r
- /// <param name="initialValue">The value to set the current checksum to</param>\r
- public AdlerChecksum(uint initialValue) : base(initialValue) {}\r
-\r
- /// <summary>\r
- /// Updates the current checksum with part of an array of bytes\r
- /// </summary>\r
- /// <param name="data">The data to update the checksum with</param>\r
- /// <param name="offset">Where in <c>data</c> to start updating</param>\r
- /// <param name="count">The number of bytes from <c>data</c> to use</param>\r
- /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>\r
- /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>\r
- /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>\r
- public override void Update(byte[] data, int offset, int count)\r
- {\r
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();\r
- if ((offset+count) > data.Length) throw new ArgumentException();\r
- GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);\r
- try\r
- {\r
- _current = adler32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);\r
- }\r
- finally\r
- {\r
- hData.Free();\r
- }\r
- }\r
-\r
- }\r
- #endregion\r
-\r
-}
\ No newline at end of file
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.Diagnostics;\r
-\r
-namespace DotZLib\r
-{\r
-\r
- /// <summary>\r
- /// This class implements a circular buffer\r
- /// </summary>\r
- internal class CircularBuffer\r
- {\r
- #region Private data\r
- private int _capacity;\r
- private int _head;\r
- private int _tail;\r
- private int _size;\r
- private byte[] _buffer;\r
- #endregion\r
-\r
- public CircularBuffer(int capacity)\r
- { \r
- Debug.Assert( capacity > 0 );\r
- _buffer = new byte[capacity];\r
- _capacity = capacity;\r
- _head = 0;\r
- _tail = 0;\r
- _size = 0;\r
- }\r
-\r
- public int Size { get { return _size; } }\r
-\r
- public int Put(byte[] source, int offset, int count)\r
- {\r
- Debug.Assert( count > 0 );\r
- int trueCount = Math.Min(count, _capacity - Size);\r
- for (int i = 0; i < trueCount; ++i)\r
- _buffer[(_tail+i) % _capacity] = source[offset+i];\r
- _tail += trueCount;\r
- _tail %= _capacity;\r
- _size += trueCount;\r
- return trueCount;\r
- }\r
-\r
- public bool Put(byte b)\r
- {\r
- if (Size == _capacity) // no room\r
- return false;\r
- _buffer[_tail++] = b;\r
- _tail %= _capacity;\r
- ++_size;\r
- return true;\r
- }\r
-\r
- public int Get(byte[] destination, int offset, int count)\r
- {\r
- int trueCount = Math.Min(count,Size);\r
- for (int i = 0; i < trueCount; ++i)\r
- destination[offset + i] = _buffer[(_head+i) % _capacity];\r
- _head += trueCount;\r
- _head %= _capacity;\r
- _size -= trueCount;\r
- return trueCount;\r
- }\r
-\r
- public int Get()\r
- {\r
- if (Size == 0)\r
- return -1;\r
-\r
- int result = (int)_buffer[_head++ % _capacity];\r
- --_size;\r
- return result;\r
- }\r
-\r
- }\r
-}\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.Runtime.InteropServices;\r
-\r
-namespace DotZLib\r
-{\r
- /// <summary>\r
- /// Implements the common functionality needed for all <see cref="Codec"/>s\r
- /// </summary>\r
- public abstract class CodecBase : Codec, IDisposable\r
- {\r
-\r
- #region Data members\r
-\r
- /// <summary>\r
- /// Instance of the internal zlib buffer structure that is \r
- /// passed to all functions in the zlib dll\r
- /// </summary>\r
- internal ZStream _ztream = new ZStream();\r
-\r
- /// <summary>\r
- /// True if the object instance has been disposed, false otherwise\r
- /// </summary>\r
- protected bool _isDisposed = false;\r
-\r
- /// <summary>\r
- /// The size of the internal buffers\r
- /// </summary>\r
- protected const int kBufferSize = 16384;\r
-\r
- private byte[] _outBuffer = new byte[kBufferSize];\r
- private byte[] _inBuffer = new byte[kBufferSize];\r
-\r
- private GCHandle _hInput;\r
- private GCHandle _hOutput;\r
-\r
- private uint _checksum = 0;\r
-\r
- #endregion\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the <c>CodeBase</c> class. \r
- /// </summary>\r
- public CodecBase()\r
- {\r
- try\r
- {\r
- _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);\r
- _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);\r
- }\r
- catch (Exception)\r
- {\r
- CleanUp(false);\r
- throw;\r
- }\r
- }\r
-\r
-\r
- #region Codec Members\r
-\r
- /// <summary>\r
- /// Occurs when more processed data are available.\r
- /// </summary>\r
- public event DataAvailableHandler DataAvailable;\r
-\r
- /// <summary>\r
- /// Fires the <see cref="DataAvailable"/> event\r
- /// </summary>\r
- protected void OnDataAvailable()\r
- {\r
- if (_ztream.total_out > 0)\r
- {\r
- if (DataAvailable != null)\r
- DataAvailable( _outBuffer, 0, (int)_ztream.total_out); \r
- resetOutput();\r
- }\r
- }\r
-\r
- /// <summary>\r
- /// Adds more data to the codec to be processed.\r
- /// </summary>\r
- /// <param name="data">Byte array containing the data to be added to the codec</param>\r
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>\r
- public void Add(byte[] data)\r
- {\r
- Add(data,0,data.Length);\r
- }\r
-\r
- /// <summary>\r
- /// Adds more data to the codec to be processed.\r
- /// </summary>\r
- /// <param name="data">Byte array containing the data to be added to the codec</param>\r
- /// <param name="offset">The index of the first byte to add from <c>data</c></param>\r
- /// <param name="count">The number of bytes to add</param>\r
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>\r
- /// <remarks>This must be implemented by a derived class</remarks>\r
- public abstract void Add(byte[] data, int offset, int count);\r
-\r
- /// <summary>\r
- /// Finishes up any pending data that needs to be processed and handled.\r
- /// </summary>\r
- /// <remarks>This must be implemented by a derived class</remarks>\r
- public abstract void Finish();\r
-\r
- /// <summary>\r
- /// Gets the checksum of the data that has been added so far\r
- /// </summary>\r
- public uint Checksum { get { return _checksum; } }\r
-\r
- #endregion\r
-\r
- #region Destructor & IDisposable stuff\r
-\r
- /// <summary>\r
- /// Destroys this instance\r
- /// </summary>\r
- ~CodecBase()\r
- {\r
- CleanUp(false);\r
- }\r
-\r
- /// <summary>\r
- /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class\r
- /// </summary>\r
- public void Dispose()\r
- {\r
- CleanUp(true);\r
- }\r
-\r
- /// <summary>\r
- /// Performs any codec specific cleanup\r
- /// </summary>\r
- /// <remarks>This must be implemented by a derived class</remarks>\r
- protected abstract void CleanUp();\r
-\r
- // performs the release of the handles and calls the dereived CleanUp()\r
- private void CleanUp(bool isDisposing)\r
- {\r
- if (!_isDisposed)\r
- {\r
- CleanUp();\r
- if (_hInput.IsAllocated)\r
- _hInput.Free();\r
- if (_hOutput.IsAllocated)\r
- _hOutput.Free();\r
-\r
- _isDisposed = true;\r
- }\r
- }\r
-\r
-\r
- #endregion\r
-\r
- #region Helper methods\r
-\r
- /// <summary>\r
- /// Copies a number of bytes to the internal codec buffer - ready for proccesing\r
- /// </summary>\r
- /// <param name="data">The byte array that contains the data to copy</param>\r
- /// <param name="startIndex">The index of the first byte to copy</param>\r
- /// <param name="count">The number of bytes to copy from <c>data</c></param>\r
- protected void copyInput(byte[] data, int startIndex, int count)\r
- {\r
- Array.Copy(data, startIndex, _inBuffer,0, count);\r
- _ztream.next_in = _hInput.AddrOfPinnedObject();\r
- _ztream.total_in = 0;\r
- _ztream.avail_in = (uint)count;\r
-\r
- }\r
-\r
- /// <summary>\r
- /// Resets the internal output buffers to a known state - ready for processing\r
- /// </summary>\r
- protected void resetOutput()\r
- {\r
- _ztream.total_out = 0;\r
- _ztream.avail_out = kBufferSize;\r
- _ztream.next_out = _hOutput.AddrOfPinnedObject();\r
- }\r
-\r
- /// <summary>\r
- /// Updates the running checksum property\r
- /// </summary>\r
- /// <param name="newSum">The new checksum value</param>\r
- protected void setChecksum(uint newSum)\r
- {\r
- _checksum = newSum;\r
- }\r
- #endregion\r
-\r
- }\r
-}\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.Diagnostics;\r
-using System.Runtime.InteropServices;\r
-\r
-namespace DotZLib\r
-{\r
-\r
- /// <summary>\r
- /// Implements a data compressor, using the deflate algorithm in the ZLib dll\r
- /// </summary>\r
- public sealed class Deflater : CodecBase\r
- {\r
- #region Dll imports\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]\r
- private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int deflate(ref ZStream sz, int flush);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int deflateReset(ref ZStream sz);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int deflateEnd(ref ZStream sz);\r
- #endregion\r
-\r
- /// <summary>\r
- /// Constructs an new instance of the <c>Deflater</c>\r
- /// </summary>\r
- /// <param name="level">The compression level to use for this <c>Deflater</c></param>\r
- public Deflater(CompressLevel level) : base()\r
- {\r
- int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));\r
- if (retval != 0)\r
- throw new ZLibException(retval, "Could not initialize deflater");\r
-\r
- resetOutput();\r
- }\r
-\r
- /// <summary>\r
- /// Adds more data to the codec to be processed.\r
- /// </summary>\r
- /// <param name="data">Byte array containing the data to be added to the codec</param>\r
- /// <param name="offset">The index of the first byte to add from <c>data</c></param>\r
- /// <param name="count">The number of bytes to add</param>\r
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>\r
- public override void Add(byte[] data, int offset, int count)\r
- {\r
- if (data == null) throw new ArgumentNullException();\r
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();\r
- if ((offset+count) > data.Length) throw new ArgumentException();\r
- \r
- int total = count;\r
- int inputIndex = offset;\r
- int err = 0;\r
-\r
- while (err >= 0 && inputIndex < total)\r
- {\r
- copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));\r
- while (err >= 0 && _ztream.avail_in > 0)\r
- {\r
- err = deflate(ref _ztream, (int)FlushTypes.None);\r
- if (err == 0)\r
- while (_ztream.avail_out == 0)\r
- {\r
- OnDataAvailable();\r
- err = deflate(ref _ztream, (int)FlushTypes.None);\r
- }\r
- inputIndex += (int)_ztream.total_in;\r
- }\r
- }\r
- setChecksum( _ztream.adler );\r
- }\r
-\r
-\r
- /// <summary>\r
- /// Finishes up any pending data that needs to be processed and handled.\r
- /// </summary>\r
- public override void Finish()\r
- {\r
- int err;\r
- do \r
- {\r
- err = deflate(ref _ztream, (int)FlushTypes.Finish);\r
- OnDataAvailable();\r
- }\r
- while (err == 0);\r
- setChecksum( _ztream.adler );\r
- deflateReset(ref _ztream);\r
- resetOutput();\r
- }\r
-\r
- /// <summary>\r
- /// Closes the internal zlib deflate stream\r
- /// </summary>\r
- protected override void CleanUp() { deflateEnd(ref _ztream); }\r
-\r
- }\r
-}\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.IO;\r
-using System.Runtime.InteropServices;\r
-using System.Text;\r
-\r
-\r
-namespace DotZLib\r
-{\r
-\r
- #region Internal types\r
-\r
- /// <summary>\r
- /// Defines constants for the various flush types used with zlib\r
- /// </summary>\r
- internal enum FlushTypes \r
- {\r
- None, Partial, Sync, Full, Finish, Block\r
- }\r
-\r
- #region ZStream structure\r
- // internal mapping of the zlib zstream structure for marshalling\r
- [StructLayoutAttribute(LayoutKind.Sequential, Pack=4, Size=0, CharSet=CharSet.Ansi)]\r
- internal struct ZStream\r
- {\r
- public IntPtr next_in;\r
- public uint avail_in;\r
- public uint total_in;\r
-\r
- public IntPtr next_out;\r
- public uint avail_out;\r
- public uint total_out;\r
-\r
- [MarshalAs(UnmanagedType.LPStr)]\r
- string msg; \r
- uint state;\r
-\r
- uint zalloc;\r
- uint zfree;\r
- uint opaque;\r
-\r
- int data_type;\r
- public uint adler;\r
- uint reserved;\r
- }\r
-\r
- #endregion\r
- \r
- #endregion\r
-\r
- #region Public enums\r
- /// <summary>\r
- /// Defines constants for the available compression levels in zlib\r
- /// </summary>\r
- public enum CompressLevel : int\r
- {\r
- /// <summary>\r
- /// The default compression level with a reasonable compromise between compression and speed\r
- /// </summary>\r
- Default = -1, \r
- /// <summary>\r
- /// No compression at all. The data are passed straight through.\r
- /// </summary>\r
- None = 0,\r
- /// <summary>\r
- /// The maximum compression rate available.\r
- /// </summary>\r
- Best = 9, \r
- /// <summary>\r
- /// The fastest available compression level.\r
- /// </summary>\r
- Fastest = 1\r
- }\r
- #endregion\r
-\r
- #region Exception classes\r
- /// <summary>\r
- /// The exception that is thrown when an error occurs on the zlib dll\r
- /// </summary>\r
- public class ZLibException : ApplicationException\r
- {\r
- /// <summary>\r
- /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified \r
- /// error message and error code\r
- /// </summary>\r
- /// <param name="errorCode">The zlib error code that caused the exception</param>\r
- /// <param name="msg">A message that (hopefully) describes the error</param>\r
- public ZLibException(int errorCode, string msg) : base(String.Format("ZLib error {0} {1}", errorCode, msg))\r
- {\r
- }\r
-\r
- /// <summary>\r
- /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified \r
- /// error code\r
- /// </summary>\r
- /// <param name="errorCode">The zlib error code that caused the exception</param>\r
- public ZLibException(int errorCode) : base(String.Format("ZLib error {0}", errorCode))\r
- {\r
- }\r
- }\r
- #endregion\r
-\r
- #region Interfaces\r
-\r
- /// <summary>\r
- /// Declares methods and properties that enables a running checksum to be calculated \r
- /// </summary>\r
- public interface ChecksumGenerator\r
- {\r
- /// <summary>\r
- /// Gets the current value of the checksum\r
- /// </summary>\r
- uint Value { get; }\r
-\r
- /// <summary>\r
- /// Clears the current checksum to 0\r
- /// </summary>\r
- void Reset();\r
-\r
- /// <summary>\r
- /// Updates the current checksum with an array of bytes\r
- /// </summary>\r
- /// <param name="data">The data to update the checksum with</param>\r
- void Update(byte[] data);\r
-\r
- /// <summary>\r
- /// Updates the current checksum with part of an array of bytes\r
- /// </summary>\r
- /// <param name="data">The data to update the checksum with</param>\r
- /// <param name="offset">Where in <c>data</c> to start updating</param>\r
- /// <param name="count">The number of bytes from <c>data</c> to use</param>\r
- /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>\r
- /// <exception cref="ArgumentNullException"><c>data</c> is a null reference</exception>\r
- /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>\r
- void Update(byte[] data, int offset, int count);\r
-\r
- /// <summary>\r
- /// Updates the current checksum with the data from a string\r
- /// </summary>\r
- /// <param name="data">The string to update the checksum with</param>\r
- /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>\r
- void Update(string data);\r
-\r
- /// <summary>\r
- /// Updates the current checksum with the data from a string, using a specific encoding\r
- /// </summary>\r
- /// <param name="data">The string to update the checksum with</param>\r
- /// <param name="encoding">The encoding to use</param>\r
- void Update(string data, Encoding encoding);\r
- }\r
-\r
-\r
- /// <summary>\r
- /// Represents the method that will be called from a codec when new data\r
- /// are available.\r
- /// </summary>\r
- /// <paramref name="data">The byte array containing the processed data</paramref>\r
- /// <paramref name="startIndex">The index of the first processed byte in <c>data</c></paramref>\r
- /// <paramref name="count">The number of processed bytes available</paramref>\r
- /// <remarks>On return from this method, the data may be overwritten, so grab it while you can. \r
- /// You cannot assume that startIndex will be zero.\r
- /// </remarks>\r
- public delegate void DataAvailableHandler(byte[] data, int startIndex, int count);\r
-\r
- /// <summary>\r
- /// Declares methods and events for implementing compressors/decompressors\r
- /// </summary>\r
- public interface Codec\r
- {\r
- /// <summary>\r
- /// Occurs when more processed data are available.\r
- /// </summary>\r
- event DataAvailableHandler DataAvailable;\r
-\r
- /// <summary>\r
- /// Adds more data to the codec to be processed.\r
- /// </summary>\r
- /// <param name="data">Byte array containing the data to be added to the codec</param>\r
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>\r
- void Add(byte[] data);\r
-\r
- /// <summary>\r
- /// Adds more data to the codec to be processed.\r
- /// </summary>\r
- /// <param name="data">Byte array containing the data to be added to the codec</param>\r
- /// <param name="offset">The index of the first byte to add from <c>data</c></param>\r
- /// <param name="count">The number of bytes to add</param>\r
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>\r
- void Add(byte[] data, int offset, int count);\r
-\r
- /// <summary>\r
- /// Finishes up any pending data that needs to be processed and handled.\r
- /// </summary>\r
- void Finish();\r
-\r
- /// <summary>\r
- /// Gets the checksum of the data that has been added so far\r
- /// </summary>\r
- uint Checksum { get; }\r
-\r
-\r
- }\r
-\r
- #endregion\r
-\r
- #region Classes\r
- /// <summary>\r
- /// Encapsulates general information about the ZLib library\r
- /// </summary>\r
- public class Info\r
- {\r
- #region DLL imports\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern uint zlibCompileFlags();\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern string zlibVersion();\r
- #endregion\r
-\r
- #region Private stuff\r
- private uint _flags;\r
-\r
- // helper function that unpacks a bitsize mask\r
- private static int bitSize(uint bits)\r
- {\r
- switch (bits)\r
- {\r
- case 0: return 16;\r
- case 1: return 32;\r
- case 2: return 64;\r
- }\r
- return -1;\r
- }\r
- #endregion\r
-\r
- /// <summary>\r
- /// Constructs an instance of the <c>Info</c> class.\r
- /// </summary>\r
- public Info()\r
- {\r
- _flags = zlibCompileFlags();\r
- }\r
-\r
- /// <summary>\r
- /// True if the library is compiled with debug info\r
- /// </summary>\r
- public bool HasDebugInfo { get { return 0 != (_flags & 0x100); } }\r
-\r
- /// <summary>\r
- /// True if the library is compiled with assembly optimizations\r
- /// </summary>\r
- public bool UsesAssemblyCode { get { return 0 != (_flags & 0x200); } }\r
-\r
- /// <summary>\r
- /// Gets the size of the unsigned int that was compiled into Zlib\r
- /// </summary>\r
- public int SizeOfUInt { get { return bitSize(_flags & 3); } }\r
-\r
- /// <summary>\r
- /// Gets the size of the unsigned long that was compiled into Zlib\r
- /// </summary>\r
- public int SizeOfULong { get { return bitSize((_flags >> 2) & 3); } }\r
-\r
- /// <summary>\r
- /// Gets the size of the pointers that were compiled into Zlib\r
- /// </summary>\r
- public int SizeOfPointer { get { return bitSize((_flags >> 4) & 3); } }\r
-\r
- /// <summary>\r
- /// Gets the size of the z_off_t type that was compiled into Zlib\r
- /// </summary>\r
- public int SizeOfOffset { get { return bitSize((_flags >> 6) & 3); } }\r
-\r
- /// <summary>\r
- /// Gets the version of ZLib as a string, e.g. "1.2.1"\r
- /// </summary>\r
- public static string Version { get { return zlibVersion(); } }\r
- }\r
-\r
- #endregion\r
-\r
-}\r
+++ /dev/null
-<VisualStudioProject>\r
- <CSHARP\r
- ProjectType = "Local"\r
- ProductVersion = "7.10.3077"\r
- SchemaVersion = "2.0"\r
- ProjectGuid = "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"\r
- >\r
- <Build>\r
- <Settings\r
- ApplicationIcon = ""\r
- AssemblyKeyContainerName = ""\r
- AssemblyName = "DotZLib"\r
- AssemblyOriginatorKeyFile = ""\r
- DefaultClientScript = "JScript"\r
- DefaultHTMLPageLayout = "Grid"\r
- DefaultTargetSchema = "IE50"\r
- DelaySign = "false"\r
- OutputType = "Library"\r
- PreBuildEvent = ""\r
- PostBuildEvent = ""\r
- RootNamespace = "DotZLib"\r
- RunPostBuildEvent = "OnBuildSuccess"\r
- StartupObject = ""\r
- >\r
- <Config\r
- Name = "Debug"\r
- AllowUnsafeBlocks = "false"\r
- BaseAddress = "285212672"\r
- CheckForOverflowUnderflow = "false"\r
- ConfigurationOverrideFile = ""\r
- DefineConstants = "DEBUG;TRACE"\r
- DocumentationFile = "docs\DotZLib.xml"\r
- DebugSymbols = "true"\r
- FileAlignment = "4096"\r
- IncrementalBuild = "false"\r
- NoStdLib = "false"\r
- NoWarn = "1591"\r
- Optimize = "false"\r
- OutputPath = "bin\Debug\"\r
- RegisterForComInterop = "false"\r
- RemoveIntegerChecks = "false"\r
- TreatWarningsAsErrors = "false"\r
- WarningLevel = "4"\r
- />\r
- <Config\r
- Name = "Release"\r
- AllowUnsafeBlocks = "false"\r
- BaseAddress = "285212672"\r
- CheckForOverflowUnderflow = "false"\r
- ConfigurationOverrideFile = ""\r
- DefineConstants = "TRACE"\r
- DocumentationFile = "docs\DotZLib.xml"\r
- DebugSymbols = "false"\r
- FileAlignment = "4096"\r
- IncrementalBuild = "false"\r
- NoStdLib = "false"\r
- NoWarn = ""\r
- Optimize = "true"\r
- OutputPath = "bin\Release\"\r
- RegisterForComInterop = "false"\r
- RemoveIntegerChecks = "false"\r
- TreatWarningsAsErrors = "false"\r
- WarningLevel = "4"\r
- />\r
- </Settings>\r
- <References>\r
- <Reference\r
- Name = "System"\r
- AssemblyName = "System"\r
- HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.dll"\r
- />\r
- <Reference\r
- Name = "System.Data"\r
- AssemblyName = "System.Data"\r
- HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.Data.dll"\r
- />\r
- <Reference\r
- Name = "System.XML"\r
- AssemblyName = "System.Xml"\r
- HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.XML.dll"\r
- />\r
- <Reference\r
- Name = "nunit.framework"\r
- AssemblyName = "nunit.framework"\r
- HintPath = "E:\apps\NUnit V2.1\\bin\nunit.framework.dll"\r
- AssemblyFolderKey = "hklm\dn\nunit.framework"\r
- />\r
- </References>\r
- </Build>\r
- <Files>\r
- <Include>\r
- <File\r
- RelPath = "AssemblyInfo.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "ChecksumImpl.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "CircularBuffer.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "CodecBase.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "Deflater.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "DotZLib.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "GZipStream.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "Inflater.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- <File\r
- RelPath = "UnitTests.cs"\r
- SubType = "Code"\r
- BuildAction = "Compile"\r
- />\r
- </Include>\r
- </Files>\r
- </CSHARP>\r
-</VisualStudioProject>\r
-\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.IO;\r
-using System.Runtime.InteropServices;\r
-\r
-namespace DotZLib\r
-{\r
- /// <summary>\r
- /// Implements a compressed <see cref="Stream"/>, in GZip (.gz) format.\r
- /// </summary>\r
- public class GZipStream : Stream, IDisposable\r
- {\r
- #region Dll Imports\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]\r
- private static extern IntPtr gzopen(string name, string mode);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int gzclose(IntPtr gzFile);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int gzwrite(IntPtr gzFile, int data, int length);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int gzread(IntPtr gzFile, int data, int length);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int gzgetc(IntPtr gzFile);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int gzputc(IntPtr gzFile, int c);\r
-\r
- #endregion\r
-\r
- #region Private data\r
- private IntPtr _gzFile;\r
- private bool _isDisposed = false;\r
- private bool _isWriting;\r
- #endregion\r
-\r
- #region Constructors\r
- /// <summary>\r
- /// Creates a new file as a writeable GZipStream\r
- /// </summary>\r
- /// <param name="fileName">The name of the compressed file to create</param>\r
- /// <param name="level">The compression level to use when adding data</param>\r
- /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>\r
- public GZipStream(string fileName, CompressLevel level)\r
- {\r
- _isWriting = true;\r
- _gzFile = gzopen(fileName, String.Format("wb{0}", (int)level));\r
- if (_gzFile == IntPtr.Zero)\r
- throw new ZLibException(-1, "Could not open " + fileName);\r
- }\r
-\r
- /// <summary>\r
- /// Opens an existing file as a readable GZipStream\r
- /// </summary>\r
- /// <param name="fileName">The name of the file to open</param>\r
- /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>\r
- public GZipStream(string fileName)\r
- {\r
- _isWriting = false;\r
- _gzFile = gzopen(fileName, "rb");\r
- if (_gzFile == IntPtr.Zero)\r
- throw new ZLibException(-1, "Could not open " + fileName);\r
-\r
- }\r
- #endregion\r
-\r
- #region Access properties\r
- /// <summary>\r
- /// Returns true of this stream can be read from, false otherwise\r
- /// </summary>\r
- public override bool CanRead\r
- {\r
- get\r
- {\r
- return !_isWriting;\r
- }\r
- }\r
- \r
-\r
- /// <summary>\r
- /// Returns false.\r
- /// </summary>\r
- public override bool CanSeek\r
- {\r
- get\r
- {\r
- return false;\r
- }\r
- }\r
- \r
- /// <summary>\r
- /// Returns true if this tsream is writeable, false otherwise\r
- /// </summary>\r
- public override bool CanWrite\r
- {\r
- get\r
- {\r
- return _isWriting;\r
- }\r
- }\r
- #endregion\r
- \r
- #region Destructor & IDispose stuff\r
-\r
- /// <summary>\r
- /// Destroys this instance\r
- /// </summary>\r
- ~GZipStream()\r
- {\r
- cleanUp(false);\r
- }\r
-\r
- /// <summary>\r
- /// Closes the external file handle\r
- /// </summary>\r
- public void Dispose()\r
- {\r
- cleanUp(true);\r
- }\r
-\r
- // Does the actual closing of the file handle.\r
- private void cleanUp(bool isDisposing)\r
- {\r
- if (!_isDisposed)\r
- {\r
- gzclose(_gzFile);\r
- _isDisposed = true;\r
- }\r
- }\r
- #endregion\r
- \r
- #region Basic reading and writing\r
- /// <summary>\r
- /// Attempts to read a number of bytes from the stream.\r
- /// </summary>\r
- /// <param name="buffer">The destination data buffer</param>\r
- /// <param name="offset">The index of the first destination byte in <c>buffer</c></param>\r
- /// <param name="count">The number of bytes requested</param>\r
- /// <returns>The number of bytes read</returns>\r
- /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>\r
- /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>\r
- /// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is > buffer.Length</exception>\r
- /// <exception cref="NotSupportedException">If this stream is not readable.</exception>\r
- /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>\r
- public override int Read(byte[] buffer, int offset, int count)\r
- {\r
- if (!CanRead) throw new NotSupportedException();\r
- if (buffer == null) throw new ArgumentNullException();\r
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();\r
- if ((offset+count) > buffer.Length) throw new ArgumentException();\r
- if (_isDisposed) throw new ObjectDisposedException("GZipStream");\r
-\r
- GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);\r
- int result;\r
- try\r
- {\r
- result = gzread(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);\r
- if (result < 0)\r
- throw new IOException();\r
- }\r
- finally\r
- {\r
- h.Free();\r
- }\r
- return result;\r
- }\r
-\r
- /// <summary>\r
- /// Attempts to read a single byte from the stream.\r
- /// </summary>\r
- /// <returns>The byte that was read, or -1 in case of error or End-Of-File</returns>\r
- public override int ReadByte()\r
- {\r
- if (!CanRead) throw new NotSupportedException();\r
- if (_isDisposed) throw new ObjectDisposedException("GZipStream");\r
- return gzgetc(_gzFile);\r
- }\r
-\r
- /// <summary>\r
- /// Writes a number of bytes to the stream\r
- /// </summary>\r
- /// <param name="buffer"></param>\r
- /// <param name="offset"></param>\r
- /// <param name="count"></param>\r
- /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>\r
- /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>\r
- /// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is > buffer.Length</exception>\r
- /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>\r
- /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>\r
- public override void Write(byte[] buffer, int offset, int count)\r
- {\r
- if (!CanWrite) throw new NotSupportedException();\r
- if (buffer == null) throw new ArgumentNullException();\r
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();\r
- if ((offset+count) > buffer.Length) throw new ArgumentException();\r
- if (_isDisposed) throw new ObjectDisposedException("GZipStream");\r
-\r
- GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);\r
- try\r
- {\r
- int result = gzwrite(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);\r
- if (result < 0)\r
- throw new IOException();\r
- }\r
- finally\r
- {\r
- h.Free();\r
- }\r
- }\r
-\r
- /// <summary>\r
- /// Writes a single byte to the stream\r
- /// </summary>\r
- /// <param name="value">The byte to add to the stream.</param>\r
- /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>\r
- /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>\r
- public override void WriteByte(byte value)\r
- {\r
- if (!CanWrite) throw new NotSupportedException();\r
- if (_isDisposed) throw new ObjectDisposedException("GZipStream");\r
-\r
- int result = gzputc(_gzFile, (int)value);\r
- if (result < 0)\r
- throw new IOException();\r
- }\r
- #endregion\r
-\r
- #region Position & length stuff\r
- /// <summary>\r
- /// Not supported.\r
- /// </summary>\r
- /// <param name="value"></param>\r
- /// <exception cref="NotSupportedException">Always thrown</exception>\r
- public override void SetLength(long value)\r
- {\r
- throw new NotSupportedException();\r
- }\r
- \r
- /// <summary>\r
- /// Not suppported.\r
- /// </summary>\r
- /// <param name="offset"></param>\r
- /// <param name="origin"></param>\r
- /// <returns></returns>\r
- /// <exception cref="NotSupportedException">Always thrown</exception>\r
- public override long Seek(long offset, SeekOrigin origin)\r
- {\r
- throw new NotSupportedException();\r
- }\r
- \r
- /// <summary>\r
- /// Flushes the <c>GZipStream</c>.\r
- /// </summary>\r
- /// <remarks>In this implementation, this method does nothing. This is because excessive\r
- /// flushing may degrade the achievable compression rates.</remarks>\r
- public override void Flush()\r
- {\r
- // left empty on purpose\r
- }\r
- \r
- /// <summary>\r
- /// Gets/sets the current position in the <c>GZipStream</c>. Not suppported.\r
- /// </summary>\r
- /// <remarks>In this implementation this property is not supported</remarks>\r
- /// <exception cref="NotSupportedException">Always thrown</exception>\r
- public override long Position\r
- {\r
- get\r
- {\r
- throw new NotSupportedException();\r
- }\r
- set\r
- {\r
- throw new NotSupportedException();\r
- }\r
- }\r
- \r
- /// <summary>\r
- /// Gets the size of the stream. Not suppported.\r
- /// </summary>\r
- /// <remarks>In this implementation this property is not supported</remarks>\r
- /// <exception cref="NotSupportedException">Always thrown</exception>\r
- public override long Length\r
- {\r
- get\r
- {\r
- throw new NotSupportedException();\r
- }\r
- }\r
- #endregion\r
- }\r
-}\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.Diagnostics;\r
-using System.Runtime.InteropServices;\r
-\r
-namespace DotZLib\r
-{\r
- \r
- /// <summary>\r
- /// Implements a data decompressor, using the inflate algorithm in the ZLib dll\r
- /// </summary>\r
- public class Inflater : CodecBase\r
- {\r
- #region Dll imports\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]\r
- private static extern int inflateInit_(ref ZStream sz, string vs, int size);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int inflate(ref ZStream sz, int flush);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int inflateReset(ref ZStream sz);\r
-\r
- [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]\r
- private static extern int inflateEnd(ref ZStream sz);\r
- #endregion\r
-\r
- /// <summary>\r
- /// Constructs an new instance of the <c>Inflater</c>\r
- /// </summary>\r
- public Inflater() : base()\r
- {\r
- int retval = inflateInit_(ref _ztream, Info.Version, Marshal.SizeOf(_ztream));\r
- if (retval != 0)\r
- throw new ZLibException(retval, "Could not initialize inflater");\r
-\r
- resetOutput();\r
- }\r
-\r
-\r
- /// <summary>\r
- /// Adds more data to the codec to be processed.\r
- /// </summary>\r
- /// <param name="data">Byte array containing the data to be added to the codec</param>\r
- /// <param name="offset">The index of the first byte to add from <c>data</c></param>\r
- /// <param name="count">The number of bytes to add</param>\r
- /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>\r
- public override void Add(byte[] data, int offset, int count)\r
- {\r
- if (data == null) throw new ArgumentNullException();\r
- if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();\r
- if ((offset+count) > data.Length) throw new ArgumentException();\r
-\r
- int total = count;\r
- int inputIndex = offset;\r
- int err = 0;\r
-\r
- while (err >= 0 && inputIndex < total)\r
- {\r
- copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));\r
- err = inflate(ref _ztream, (int)FlushTypes.None);\r
- if (err == 0)\r
- while (_ztream.avail_out == 0)\r
- {\r
- OnDataAvailable();\r
- err = inflate(ref _ztream, (int)FlushTypes.None);\r
- }\r
-\r
- inputIndex += (int)_ztream.total_in;\r
- }\r
- setChecksum( _ztream.adler );\r
- }\r
-\r
-\r
- /// <summary>\r
- /// Finishes up any pending data that needs to be processed and handled.\r
- /// </summary>\r
- public override void Finish()\r
- {\r
- int err;\r
- do \r
- {\r
- err = inflate(ref _ztream, (int)FlushTypes.Finish);\r
- OnDataAvailable();\r
- }\r
- while (err == 0);\r
- setChecksum( _ztream.adler );\r
- inflateReset(ref _ztream);\r
- resetOutput();\r
- }\r
-\r
- /// <summary>\r
- /// Closes the internal zlib inflate stream\r
- /// </summary>\r
- protected override void CleanUp() { inflateEnd(ref _ztream); }\r
-\r
-\r
- }\r
-}\r
+++ /dev/null
-//\r
-// © Copyright Henrik Ravn 2004\r
-//\r
-// Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-using System;\r
-using System.Collections;\r
-using System.IO;\r
-\r
-// uncomment the define below to include unit tests\r
-//#define nunit\r
-#if nunit\r
-using NUnit.Framework;\r
-\r
-// Unit tests for the DotZLib class library\r
-// ----------------------------------------\r
-//\r
-// Use this with NUnit 2 from http://www.nunit.org\r
-//\r
-\r
-namespace DotZLibTests\r
-{\r
- using DotZLib;\r
-\r
- // helper methods\r
- internal class Utils\r
- {\r
- public static bool byteArrEqual( byte[] lhs, byte[] rhs )\r
- {\r
- if (lhs.Length != rhs.Length)\r
- return false;\r
- for (int i = lhs.Length-1; i >= 0; --i)\r
- if (lhs[i] != rhs[i])\r
- return false;\r
- return true;\r
- }\r
-\r
- }\r
-\r
-\r
- [TestFixture]\r
- public class CircBufferTests\r
- {\r
- #region Circular buffer tests\r
- [Test]\r
- public void SinglePutGet()\r
- {\r
- CircularBuffer buf = new CircularBuffer(10);\r
- Assert.AreEqual( 0, buf.Size );\r
- Assert.AreEqual( -1, buf.Get() );\r
-\r
- Assert.IsTrue(buf.Put( 1 ));\r
- Assert.AreEqual( 1, buf.Size );\r
- Assert.AreEqual( 1, buf.Get() );\r
- Assert.AreEqual( 0, buf.Size );\r
- Assert.AreEqual( -1, buf.Get() );\r
- }\r
-\r
- [Test]\r
- public void BlockPutGet()\r
- {\r
- CircularBuffer buf = new CircularBuffer(10);\r
- byte[] arr = {1,2,3,4,5,6,7,8,9,10};\r
- Assert.AreEqual( 10, buf.Put(arr,0,10) );\r
- Assert.AreEqual( 10, buf.Size );\r
- Assert.IsFalse( buf.Put(11) );\r
- Assert.AreEqual( 1, buf.Get() );\r
- Assert.IsTrue( buf.Put(11) );\r
-\r
- byte[] arr2 = (byte[])arr.Clone();\r
- Assert.AreEqual( 9, buf.Get(arr2,1,9) );\r
- Assert.IsTrue( Utils.byteArrEqual(arr,arr2) );\r
- }\r
-\r
- #endregion\r
- }\r
-\r
- [TestFixture]\r
- public class ChecksumTests\r
- {\r
- #region CRC32 Tests\r
- [Test]\r
- public void CRC32_Null()\r
- {\r
- CRC32Checksum crc32 = new CRC32Checksum();\r
- Assert.AreEqual( 0, crc32.Value );\r
-\r
- crc32 = new CRC32Checksum(1);\r
- Assert.AreEqual( 1, crc32.Value );\r
-\r
- crc32 = new CRC32Checksum(556);\r
- Assert.AreEqual( 556, crc32.Value );\r
- }\r
-\r
- [Test]\r
- public void CRC32_Data()\r
- {\r
- CRC32Checksum crc32 = new CRC32Checksum();\r
- byte[] data = { 1,2,3,4,5,6,7 };\r
- crc32.Update(data);\r
- Assert.AreEqual( 0x70e46888, crc32.Value );\r
-\r
- crc32 = new CRC32Checksum();\r
- crc32.Update("penguin");\r
- Assert.AreEqual( 0x0e5c1a120, crc32.Value );\r
-\r
- crc32 = new CRC32Checksum(1);\r
- crc32.Update("penguin");\r
- Assert.AreEqual(0x43b6aa94, crc32.Value);\r
-\r
- }\r
- #endregion\r
-\r
- #region Adler tests\r
-\r
- [Test]\r
- public void Adler_Null()\r
- {\r
- AdlerChecksum adler = new AdlerChecksum();\r
- Assert.AreEqual(0, adler.Value);\r
-\r
- adler = new AdlerChecksum(1);\r
- Assert.AreEqual( 1, adler.Value );\r
-\r
- adler = new AdlerChecksum(556);\r
- Assert.AreEqual( 556, adler.Value );\r
- }\r
-\r
- [Test]\r
- public void Adler_Data()\r
- {\r
- AdlerChecksum adler = new AdlerChecksum(1);\r
- byte[] data = { 1,2,3,4,5,6,7 };\r
- adler.Update(data);\r
- Assert.AreEqual( 0x5b001d, adler.Value );\r
-\r
- adler = new AdlerChecksum();\r
- adler.Update("penguin");\r
- Assert.AreEqual(0x0bcf02f6, adler.Value );\r
-\r
- adler = new AdlerChecksum(1);\r
- adler.Update("penguin");\r
- Assert.AreEqual(0x0bd602f7, adler.Value);\r
-\r
- }\r
- #endregion\r
- }\r
-\r
- [TestFixture]\r
- public class InfoTests\r
- {\r
- #region Info tests\r
- [Test]\r
- public void Info_Version()\r
- {\r
- Info info = new Info();\r
- Assert.AreEqual("1.2.3", Info.Version);\r
- Assert.AreEqual(32, info.SizeOfUInt);\r
- Assert.AreEqual(32, info.SizeOfULong);\r
- Assert.AreEqual(32, info.SizeOfPointer);\r
- Assert.AreEqual(32, info.SizeOfOffset);\r
- }\r
- #endregion\r
- }\r
-\r
- [TestFixture]\r
- public class DeflateInflateTests\r
- {\r
- #region Deflate tests\r
- [Test]\r
- public void Deflate_Init()\r
- {\r
- using (Deflater def = new Deflater(CompressLevel.Default))\r
- {\r
- }\r
- }\r
-\r
- private ArrayList compressedData = new ArrayList();\r
- private uint adler1;\r
-\r
- private ArrayList uncompressedData = new ArrayList();\r
- private uint adler2;\r
-\r
- public void CDataAvail(byte[] data, int startIndex, int count)\r
- {\r
- for (int i = 0; i < count; ++i)\r
- compressedData.Add(data[i+startIndex]);\r
- }\r
-\r
- [Test]\r
- public void Deflate_Compress()\r
- {\r
- compressedData.Clear();\r
-\r
- byte[] testData = new byte[35000];\r
- for (int i = 0; i < testData.Length; ++i)\r
- testData[i] = 5;\r
-\r
- using (Deflater def = new Deflater((CompressLevel)5))\r
- {\r
- def.DataAvailable += new DataAvailableHandler(CDataAvail);\r
- def.Add(testData);\r
- def.Finish();\r
- adler1 = def.Checksum;\r
- }\r
- }\r
- #endregion\r
-\r
- #region Inflate tests\r
- [Test]\r
- public void Inflate_Init()\r
- {\r
- using (Inflater inf = new Inflater())\r
- {\r
- }\r
- }\r
-\r
- private void DDataAvail(byte[] data, int startIndex, int count)\r
- {\r
- for (int i = 0; i < count; ++i)\r
- uncompressedData.Add(data[i+startIndex]);\r
- }\r
-\r
- [Test]\r
- public void Inflate_Expand()\r
- { \r
- uncompressedData.Clear();\r
-\r
- using (Inflater inf = new Inflater())\r
- {\r
- inf.DataAvailable += new DataAvailableHandler(DDataAvail);\r
- inf.Add((byte[])compressedData.ToArray(typeof(byte)));\r
- inf.Finish();\r
- adler2 = inf.Checksum;\r
- }\r
- Assert.AreEqual( adler1, adler2 );\r
- }\r
- #endregion\r
- }\r
-\r
- [TestFixture]\r
- public class GZipStreamTests\r
- {\r
- #region GZipStream test\r
- [Test]\r
- public void GZipStream_WriteRead()\r
- {\r
- using (GZipStream gzOut = new GZipStream("gzstream.gz", CompressLevel.Best))\r
- {\r
- BinaryWriter writer = new BinaryWriter(gzOut);\r
- writer.Write("hi there");\r
- writer.Write(Math.PI);\r
- writer.Write(42);\r
- }\r
-\r
- using (GZipStream gzIn = new GZipStream("gzstream.gz"))\r
- {\r
- BinaryReader reader = new BinaryReader(gzIn);\r
- string s = reader.ReadString();\r
- Assert.AreEqual("hi there",s);\r
- double d = reader.ReadDouble();\r
- Assert.AreEqual(Math.PI, d);\r
- int i = reader.ReadInt32();\r
- Assert.AreEqual(42,i);\r
- }\r
-\r
- }\r
- #endregion\r
- }\r
-}\r
-\r
-#endif
\ No newline at end of file
+++ /dev/null
-Boost Software License - Version 1.0 - August 17th, 2003\r
-\r
-Permission is hereby granted, free of charge, to any person or organization\r
-obtaining a copy of the software and accompanying documentation covered by\r
-this license (the "Software") to use, reproduce, display, distribute,\r
-execute, and transmit the Software, and to prepare derivative works of the\r
-Software, and to permit third-parties to whom the Software is furnished to\r
-do so, all subject to the following:\r
-\r
-The copyright notices in the Software and this entire statement, including\r
-the above license grant, this restriction and the following disclaimer,\r
-must be included in all copies of the Software, in whole or in part, and\r
-all derivative works of the Software, unless such copies or derivative\r
-works are solely in the form of machine-executable object code generated by\r
-a source language processor.\r
-\r
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT\r
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE\r
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,\r
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER\r
-DEALINGS IN THE SOFTWARE.
\ No newline at end of file
+++ /dev/null
-This directory contains a .Net wrapper class library for the ZLib1.dll\r
-\r
-The wrapper includes support for inflating/deflating memory buffers, \r
-.Net streaming wrappers for the gz streams part of zlib, and wrappers\r
-for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples.\r
-\r
-Directory structure:\r
---------------------\r
-\r
-LICENSE_1_0.txt - License file.\r
-readme.txt - This file.\r
-DotZLib.chm - Class library documentation\r
-DotZLib.build - NAnt build file\r
-DotZLib.sln - Microsoft Visual Studio 2003 solution file\r
-\r
-DotZLib\*.cs - Source files for the class library\r
-\r
-Unit tests:\r
------------\r
-The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher.\r
-To include unit tests in the build, define nunit before building.\r
-\r
-\r
-Build instructions:\r
--------------------\r
-\r
-1. Using Visual Studio.Net 2003:\r
- Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll)\r
- will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on \r
- you are building the release or debug version of the library. Check \r
- DotZLib/UnitTests.cs for instructions on how to include unit tests in the\r
- build.\r
- \r
-2. Using NAnt:\r
- Open a command prompt with access to the build environment and run nant\r
- in the same directory as the DotZLib.build file.\r
- You can define 2 properties on the nant command-line to control the build:\r
- debug={true|false} to toggle between release/debug builds (default=true).\r
- nunit={true|false} to include or esclude unit tests (default=true).\r
- Also the target clean will remove binaries.\r
- Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release \r
- or ./DotZLib/bin/debug, depending on whether you are building the release \r
- or debug version of the library.\r
-\r
- Examples: \r
- nant -D:debug=false -D:nunit=false\r
- will build a release mode version of the library without unit tests.\r
- nant\r
- will build a debug version of the library with unit tests \r
- nant clean\r
- will remove all previously built files.\r
-\r
-\r
----------------------------------\r
-Copyright (c) Henrik Ravn 2004\r
-\r
-Use, modification and distribution are subject to the Boost Software License, Version 1.0. \r
-(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\r
+++ /dev/null
-See infback9.h for what this is and how to use it.
+++ /dev/null
-/* infback9.c -- inflate deflate64 data using a call-back interface
- * Copyright (C) 1995-2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "zutil.h"
-#include "infback9.h"
-#include "inftree9.h"
-#include "inflate9.h"
-
-#define WSIZE 65536UL
-
-/*
- strm provides memory allocation functions in zalloc and zfree, or
- Z_NULL to use the library memory allocation functions.
-
- window is a user-supplied window and output buffer that is 64K bytes.
- */
-int ZEXPORT inflateBack9Init_(strm, window, version, stream_size)
-z_stream FAR *strm;
-unsigned char FAR *window;
-const char *version;
-int stream_size;
-{
- struct inflate_state FAR *state;
-
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
- stream_size != (int)(sizeof(z_stream)))
- return Z_VERSION_ERROR;
- if (strm == Z_NULL || window == Z_NULL)
- return Z_STREAM_ERROR;
- strm->msg = Z_NULL; /* in case we return an error */
- if (strm->zalloc == (alloc_func)0) {
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
- }
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;
- state = (struct inflate_state FAR *)ZALLOC(strm, 1,
- sizeof(struct inflate_state));
- if (state == Z_NULL) return Z_MEM_ERROR;
- Tracev((stderr, "inflate: allocated\n"));
- strm->state = (voidpf)state;
- state->window = window;
- return Z_OK;
-}
-
-/*
- Build and output length and distance decoding tables for fixed code
- decoding.
- */
-#ifdef MAKEFIXED
-#include <stdio.h>
-
-void makefixed9(void)
-{
- unsigned sym, bits, low, size;
- code *next, *lenfix, *distfix;
- struct inflate_state state;
- code fixed[544];
-
- /* literal/length table */
- sym = 0;
- while (sym < 144) state.lens[sym++] = 8;
- while (sym < 256) state.lens[sym++] = 9;
- while (sym < 280) state.lens[sym++] = 7;
- while (sym < 288) state.lens[sym++] = 8;
- next = fixed;
- lenfix = next;
- bits = 9;
- inflate_table9(LENS, state.lens, 288, &(next), &(bits), state.work);
-
- /* distance table */
- sym = 0;
- while (sym < 32) state.lens[sym++] = 5;
- distfix = next;
- bits = 5;
- inflate_table9(DISTS, state.lens, 32, &(next), &(bits), state.work);
-
- /* write tables */
- puts(" /* inffix9.h -- table for decoding deflate64 fixed codes");
- puts(" * Generated automatically by makefixed9().");
- puts(" */");
- puts("");
- puts(" /* WARNING: this file should *not* be used by applications.");
- puts(" It is part of the implementation of this library and is");
- puts(" subject to change. Applications should only use zlib.h.");
- puts(" */");
- puts("");
- size = 1U << 9;
- printf(" static const code lenfix[%u] = {", size);
- low = 0;
- for (;;) {
- if ((low % 6) == 0) printf("\n ");
- printf("{%u,%u,%d}", lenfix[low].op, lenfix[low].bits,
- lenfix[low].val);
- if (++low == size) break;
- putchar(',');
- }
- puts("\n };");
- size = 1U << 5;
- printf("\n static const code distfix[%u] = {", size);
- low = 0;
- for (;;) {
- if ((low % 5) == 0) printf("\n ");
- printf("{%u,%u,%d}", distfix[low].op, distfix[low].bits,
- distfix[low].val);
- if (++low == size) break;
- putchar(',');
- }
- puts("\n };");
-}
-#endif /* MAKEFIXED */
-
-/* Macros for inflateBack(): */
-
-/* Clear the input bit accumulator */
-#define INITBITS() \
- do { \
- hold = 0; \
- bits = 0; \
- } while (0)
-
-/* Assure that some input is available. If input is requested, but denied,
- then return a Z_BUF_ERROR from inflateBack(). */
-#define PULL() \
- do { \
- if (have == 0) { \
- have = in(in_desc, &next); \
- if (have == 0) { \
- next = Z_NULL; \
- ret = Z_BUF_ERROR; \
- goto inf_leave; \
- } \
- } \
- } while (0)
-
-/* Get a byte of input into the bit accumulator, or return from inflateBack()
- with an error if there is no input available. */
-#define PULLBYTE() \
- do { \
- PULL(); \
- have--; \
- hold += (unsigned long)(*next++) << bits; \
- bits += 8; \
- } while (0)
-
-/* Assure that there are at least n bits in the bit accumulator. If there is
- not enough available input to do that, then return from inflateBack() with
- an error. */
-#define NEEDBITS(n) \
- do { \
- while (bits < (unsigned)(n)) \
- PULLBYTE(); \
- } while (0)
-
-/* Return the low n bits of the bit accumulator (n <= 16) */
-#define BITS(n) \
- ((unsigned)hold & ((1U << (n)) - 1))
-
-/* Remove n bits from the bit accumulator */
-#define DROPBITS(n) \
- do { \
- hold >>= (n); \
- bits -= (unsigned)(n); \
- } while (0)
-
-/* Remove zero to seven bits as needed to go to a byte boundary */
-#define BYTEBITS() \
- do { \
- hold >>= bits & 7; \
- bits -= bits & 7; \
- } while (0)
-
-/* Assure that some output space is available, by writing out the window
- if it's full. If the write fails, return from inflateBack() with a
- Z_BUF_ERROR. */
-#define ROOM() \
- do { \
- if (left == 0) { \
- put = window; \
- left = WSIZE; \
- wrap = 1; \
- if (out(out_desc, put, (unsigned)left)) { \
- ret = Z_BUF_ERROR; \
- goto inf_leave; \
- } \
- } \
- } while (0)
-
-/*
- strm provides the memory allocation functions and window buffer on input,
- and provides information on the unused input on return. For Z_DATA_ERROR
- returns, strm will also provide an error message.
-
- in() and out() are the call-back input and output functions. When
- inflateBack() needs more input, it calls in(). When inflateBack() has
- filled the window with output, or when it completes with data in the
- window, it calls out() to write out the data. The application must not
- change the provided input until in() is called again or inflateBack()
- returns. The application must not change the window/output buffer until
- inflateBack() returns.
-
- in() and out() are called with a descriptor parameter provided in the
- inflateBack() call. This parameter can be a structure that provides the
- information required to do the read or write, as well as accumulated
- information on the input and output such as totals and check values.
-
- in() should return zero on failure. out() should return non-zero on
- failure. If either in() or out() fails, than inflateBack() returns a
- Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
- was in() or out() that caused in the error. Otherwise, inflateBack()
- returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
- error, or Z_MEM_ERROR if it could not allocate memory for the state.
- inflateBack() can also return Z_STREAM_ERROR if the input parameters
- are not correct, i.e. strm is Z_NULL or the state was not initialized.
- */
-int ZEXPORT inflateBack9(strm, in, in_desc, out, out_desc)
-z_stream FAR *strm;
-in_func in;
-void FAR *in_desc;
-out_func out;
-void FAR *out_desc;
-{
- struct inflate_state FAR *state;
- unsigned char FAR *next; /* next input */
- unsigned char FAR *put; /* next output */
- unsigned have; /* available input */
- unsigned long left; /* available output */
- inflate_mode mode; /* current inflate mode */
- int lastblock; /* true if processing last block */
- int wrap; /* true if the window has wrapped */
- unsigned long write; /* window write index */
- unsigned char FAR *window; /* allocated sliding window, if needed */
- unsigned long hold; /* bit buffer */
- unsigned bits; /* bits in bit buffer */
- unsigned extra; /* extra bits needed */
- unsigned long length; /* literal or length of data to copy */
- unsigned long offset; /* distance back to copy string from */
- unsigned long copy; /* number of stored or match bytes to copy */
- unsigned char FAR *from; /* where to copy match bytes from */
- code const FAR *lencode; /* starting table for length/literal codes */
- code const FAR *distcode; /* starting table for distance codes */
- unsigned lenbits; /* index bits for lencode */
- unsigned distbits; /* index bits for distcode */
- code this; /* current decoding table entry */
- code last; /* parent table entry */
- unsigned len; /* length to copy for repeats, bits to drop */
- int ret; /* return code */
- static const unsigned short order[19] = /* permutation of code lengths */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-#include "inffix9.h"
-
- /* Check that the strm exists and that the state was initialized */
- if (strm == Z_NULL || strm->state == Z_NULL)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
-
- /* Reset the state */
- strm->msg = Z_NULL;
- mode = TYPE;
- lastblock = 0;
- write = 0;
- wrap = 0;
- window = state->window;
- next = strm->next_in;
- have = next != Z_NULL ? strm->avail_in : 0;
- hold = 0;
- bits = 0;
- put = window;
- left = WSIZE;
- lencode = Z_NULL;
- distcode = Z_NULL;
-
- /* Inflate until end of block marked as last */
- for (;;)
- switch (mode) {
- case TYPE:
- /* determine and dispatch block type */
- if (lastblock) {
- BYTEBITS();
- mode = DONE;
- break;
- }
- NEEDBITS(3);
- lastblock = BITS(1);
- DROPBITS(1);
- switch (BITS(2)) {
- case 0: /* stored block */
- Tracev((stderr, "inflate: stored block%s\n",
- lastblock ? " (last)" : ""));
- mode = STORED;
- break;
- case 1: /* fixed block */
- lencode = lenfix;
- lenbits = 9;
- distcode = distfix;
- distbits = 5;
- Tracev((stderr, "inflate: fixed codes block%s\n",
- lastblock ? " (last)" : ""));
- mode = LEN; /* decode codes */
- break;
- case 2: /* dynamic block */
- Tracev((stderr, "inflate: dynamic codes block%s\n",
- lastblock ? " (last)" : ""));
- mode = TABLE;
- break;
- case 3:
- strm->msg = (char *)"invalid block type";
- mode = BAD;
- }
- DROPBITS(2);
- break;
-
- case STORED:
- /* get and verify stored block length */
- BYTEBITS(); /* go to byte boundary */
- NEEDBITS(32);
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
- strm->msg = (char *)"invalid stored block lengths";
- mode = BAD;
- break;
- }
- length = (unsigned)hold & 0xffff;
- Tracev((stderr, "inflate: stored length %lu\n",
- length));
- INITBITS();
-
- /* copy stored block from input to output */
- while (length != 0) {
- copy = length;
- PULL();
- ROOM();
- if (copy > have) copy = have;
- if (copy > left) copy = left;
- zmemcpy(put, next, copy);
- have -= copy;
- next += copy;
- left -= copy;
- put += copy;
- length -= copy;
- }
- Tracev((stderr, "inflate: stored end\n"));
- mode = TYPE;
- break;
-
- case TABLE:
- /* get dynamic table entries descriptor */
- NEEDBITS(14);
- state->nlen = BITS(5) + 257;
- DROPBITS(5);
- state->ndist = BITS(5) + 1;
- DROPBITS(5);
- state->ncode = BITS(4) + 4;
- DROPBITS(4);
- if (state->nlen > 286) {
- strm->msg = (char *)"too many length symbols";
- mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: table sizes ok\n"));
-
- /* get code length code lengths (not a typo) */
- state->have = 0;
- while (state->have < state->ncode) {
- NEEDBITS(3);
- state->lens[order[state->have++]] = (unsigned short)BITS(3);
- DROPBITS(3);
- }
- while (state->have < 19)
- state->lens[order[state->have++]] = 0;
- state->next = state->codes;
- lencode = (code const FAR *)(state->next);
- lenbits = 7;
- ret = inflate_table9(CODES, state->lens, 19, &(state->next),
- &(lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid code lengths set";
- mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: code lengths ok\n"));
-
- /* get length and distance code code lengths */
- state->have = 0;
- while (state->have < state->nlen + state->ndist) {
- for (;;) {
- this = lencode[BITS(lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.val < 16) {
- NEEDBITS(this.bits);
- DROPBITS(this.bits);
- state->lens[state->have++] = this.val;
- }
- else {
- if (this.val == 16) {
- NEEDBITS(this.bits + 2);
- DROPBITS(this.bits);
- if (state->have == 0) {
- strm->msg = (char *)"invalid bit length repeat";
- mode = BAD;
- break;
- }
- len = (unsigned)(state->lens[state->have - 1]);
- copy = 3 + BITS(2);
- DROPBITS(2);
- }
- else if (this.val == 17) {
- NEEDBITS(this.bits + 3);
- DROPBITS(this.bits);
- len = 0;
- copy = 3 + BITS(3);
- DROPBITS(3);
- }
- else {
- NEEDBITS(this.bits + 7);
- DROPBITS(this.bits);
- len = 0;
- copy = 11 + BITS(7);
- DROPBITS(7);
- }
- if (state->have + copy > state->nlen + state->ndist) {
- strm->msg = (char *)"invalid bit length repeat";
- mode = BAD;
- break;
- }
- while (copy--)
- state->lens[state->have++] = (unsigned short)len;
- }
- }
-
- /* handle error breaks in while */
- if (mode == BAD) break;
-
- /* build code tables */
- state->next = state->codes;
- lencode = (code const FAR *)(state->next);
- lenbits = 9;
- ret = inflate_table9(LENS, state->lens, state->nlen,
- &(state->next), &(lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid literal/lengths set";
- mode = BAD;
- break;
- }
- distcode = (code const FAR *)(state->next);
- distbits = 6;
- ret = inflate_table9(DISTS, state->lens + state->nlen,
- state->ndist, &(state->next), &(distbits),
- state->work);
- if (ret) {
- strm->msg = (char *)"invalid distances set";
- mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: codes ok\n"));
- mode = LEN;
-
- case LEN:
- /* get a literal, length, or end-of-block code */
- for (;;) {
- this = lencode[BITS(lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.op && (this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = lencode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- length = (unsigned)this.val;
-
- /* process literal */
- if (this.op == 0) {
- Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", this.val));
- ROOM();
- *put++ = (unsigned char)(length);
- left--;
- mode = LEN;
- break;
- }
-
- /* process end of block */
- if (this.op & 32) {
- Tracevv((stderr, "inflate: end of block\n"));
- mode = TYPE;
- break;
- }
-
- /* invalid code */
- if (this.op & 64) {
- strm->msg = (char *)"invalid literal/length code";
- mode = BAD;
- break;
- }
-
- /* length code -- get extra bits, if any */
- extra = (unsigned)(this.op) & 31;
- if (extra != 0) {
- NEEDBITS(extra);
- length += BITS(extra);
- DROPBITS(extra);
- }
- Tracevv((stderr, "inflate: length %lu\n", length));
-
- /* get distance code */
- for (;;) {
- this = distcode[BITS(distbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if ((this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = distcode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- if (this.op & 64) {
- strm->msg = (char *)"invalid distance code";
- mode = BAD;
- break;
- }
- offset = (unsigned)this.val;
-
- /* get distance extra bits, if any */
- extra = (unsigned)(this.op) & 15;
- if (extra != 0) {
- NEEDBITS(extra);
- offset += BITS(extra);
- DROPBITS(extra);
- }
- if (offset > WSIZE - (wrap ? 0: left)) {
- strm->msg = (char *)"invalid distance too far back";
- mode = BAD;
- break;
- }
- Tracevv((stderr, "inflate: distance %lu\n", offset));
-
- /* copy match from window to output */
- do {
- ROOM();
- copy = WSIZE - offset;
- if (copy < left) {
- from = put + copy;
- copy = left - copy;
- }
- else {
- from = put - offset;
- copy = left;
- }
- if (copy > length) copy = length;
- length -= copy;
- left -= copy;
- do {
- *put++ = *from++;
- } while (--copy);
- } while (length != 0);
- break;
-
- case DONE:
- /* inflate stream terminated properly -- write leftover output */
- ret = Z_STREAM_END;
- if (left < WSIZE) {
- if (out(out_desc, window, (unsigned)(WSIZE - left)))
- ret = Z_BUF_ERROR;
- }
- goto inf_leave;
-
- case BAD:
- ret = Z_DATA_ERROR;
- goto inf_leave;
-
- default: /* can't happen, but makes compilers happy */
- ret = Z_STREAM_ERROR;
- goto inf_leave;
- }
-
- /* Return unused input */
- inf_leave:
- strm->next_in = next;
- strm->avail_in = have;
- return ret;
-}
-
-int ZEXPORT inflateBack9End(strm)
-z_stream FAR *strm;
-{
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
- Tracev((stderr, "inflate: end\n"));
- return Z_OK;
-}
+++ /dev/null
-/* infback9.h -- header for using inflateBack9 functions
- * Copyright (C) 2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * This header file and associated patches provide a decoder for PKWare's
- * undocumented deflate64 compression method (method 9). Use with infback9.c,
- * inftree9.h, inftree9.c, and inffix9.h. These patches are not supported.
- * This should be compiled with zlib, since it uses zutil.h and zutil.o.
- * This code has not yet been tested on 16-bit architectures. See the
- * comments in zlib.h for inflateBack() usage. These functions are used
- * identically, except that there is no windowBits parameter, and a 64K
- * window must be provided. Also if int's are 16 bits, then a zero for
- * the third parameter of the "out" function actually means 65536UL.
- * zlib.h must be included before this header file.
- */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-ZEXTERN int ZEXPORT inflateBack9 OF((z_stream FAR *strm,
- in_func in, void FAR *in_desc,
- out_func out, void FAR *out_desc));
-ZEXTERN int ZEXPORT inflateBack9End OF((z_stream FAR *strm));
-ZEXTERN int ZEXPORT inflateBack9Init_ OF((z_stream FAR *strm,
- unsigned char FAR *window,
- const char *version,
- int stream_size));
-#define inflateBack9Init(strm, window) \
- inflateBack9Init_((strm), (window), \
- ZLIB_VERSION, sizeof(z_stream))
-
-#ifdef __cplusplus
-}
-#endif
+++ /dev/null
- /* inffix9.h -- table for decoding deflate64 fixed codes
- * Generated automatically by makefixed9().
- */
-
- /* WARNING: this file should *not* be used by applications.
- It is part of the implementation of this library and is
- subject to change. Applications should only use zlib.h.
- */
-
- static const code lenfix[512] = {
- {96,7,0},{0,8,80},{0,8,16},{132,8,115},{130,7,31},{0,8,112},
- {0,8,48},{0,9,192},{128,7,10},{0,8,96},{0,8,32},{0,9,160},
- {0,8,0},{0,8,128},{0,8,64},{0,9,224},{128,7,6},{0,8,88},
- {0,8,24},{0,9,144},{131,7,59},{0,8,120},{0,8,56},{0,9,208},
- {129,7,17},{0,8,104},{0,8,40},{0,9,176},{0,8,8},{0,8,136},
- {0,8,72},{0,9,240},{128,7,4},{0,8,84},{0,8,20},{133,8,227},
- {131,7,43},{0,8,116},{0,8,52},{0,9,200},{129,7,13},{0,8,100},
- {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},
- {128,7,8},{0,8,92},{0,8,28},{0,9,152},{132,7,83},{0,8,124},
- {0,8,60},{0,9,216},{130,7,23},{0,8,108},{0,8,44},{0,9,184},
- {0,8,12},{0,8,140},{0,8,76},{0,9,248},{128,7,3},{0,8,82},
- {0,8,18},{133,8,163},{131,7,35},{0,8,114},{0,8,50},{0,9,196},
- {129,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},{0,8,130},
- {0,8,66},{0,9,228},{128,7,7},{0,8,90},{0,8,26},{0,9,148},
- {132,7,67},{0,8,122},{0,8,58},{0,9,212},{130,7,19},{0,8,106},
- {0,8,42},{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},
- {128,7,5},{0,8,86},{0,8,22},{65,8,0},{131,7,51},{0,8,118},
- {0,8,54},{0,9,204},{129,7,15},{0,8,102},{0,8,38},{0,9,172},
- {0,8,6},{0,8,134},{0,8,70},{0,9,236},{128,7,9},{0,8,94},
- {0,8,30},{0,9,156},{132,7,99},{0,8,126},{0,8,62},{0,9,220},
- {130,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
- {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{133,8,131},
- {130,7,31},{0,8,113},{0,8,49},{0,9,194},{128,7,10},{0,8,97},
- {0,8,33},{0,9,162},{0,8,1},{0,8,129},{0,8,65},{0,9,226},
- {128,7,6},{0,8,89},{0,8,25},{0,9,146},{131,7,59},{0,8,121},
- {0,8,57},{0,9,210},{129,7,17},{0,8,105},{0,8,41},{0,9,178},
- {0,8,9},{0,8,137},{0,8,73},{0,9,242},{128,7,4},{0,8,85},
- {0,8,21},{144,8,3},{131,7,43},{0,8,117},{0,8,53},{0,9,202},
- {129,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},
- {0,8,69},{0,9,234},{128,7,8},{0,8,93},{0,8,29},{0,9,154},
- {132,7,83},{0,8,125},{0,8,61},{0,9,218},{130,7,23},{0,8,109},
- {0,8,45},{0,9,186},{0,8,13},{0,8,141},{0,8,77},{0,9,250},
- {128,7,3},{0,8,83},{0,8,19},{133,8,195},{131,7,35},{0,8,115},
- {0,8,51},{0,9,198},{129,7,11},{0,8,99},{0,8,35},{0,9,166},
- {0,8,3},{0,8,131},{0,8,67},{0,9,230},{128,7,7},{0,8,91},
- {0,8,27},{0,9,150},{132,7,67},{0,8,123},{0,8,59},{0,9,214},
- {130,7,19},{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},
- {0,8,75},{0,9,246},{128,7,5},{0,8,87},{0,8,23},{77,8,0},
- {131,7,51},{0,8,119},{0,8,55},{0,9,206},{129,7,15},{0,8,103},
- {0,8,39},{0,9,174},{0,8,7},{0,8,135},{0,8,71},{0,9,238},
- {128,7,9},{0,8,95},{0,8,31},{0,9,158},{132,7,99},{0,8,127},
- {0,8,63},{0,9,222},{130,7,27},{0,8,111},{0,8,47},{0,9,190},
- {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},
- {0,8,16},{132,8,115},{130,7,31},{0,8,112},{0,8,48},{0,9,193},
- {128,7,10},{0,8,96},{0,8,32},{0,9,161},{0,8,0},{0,8,128},
- {0,8,64},{0,9,225},{128,7,6},{0,8,88},{0,8,24},{0,9,145},
- {131,7,59},{0,8,120},{0,8,56},{0,9,209},{129,7,17},{0,8,104},
- {0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},{0,9,241},
- {128,7,4},{0,8,84},{0,8,20},{133,8,227},{131,7,43},{0,8,116},
- {0,8,52},{0,9,201},{129,7,13},{0,8,100},{0,8,36},{0,9,169},
- {0,8,4},{0,8,132},{0,8,68},{0,9,233},{128,7,8},{0,8,92},
- {0,8,28},{0,9,153},{132,7,83},{0,8,124},{0,8,60},{0,9,217},
- {130,7,23},{0,8,108},{0,8,44},{0,9,185},{0,8,12},{0,8,140},
- {0,8,76},{0,9,249},{128,7,3},{0,8,82},{0,8,18},{133,8,163},
- {131,7,35},{0,8,114},{0,8,50},{0,9,197},{129,7,11},{0,8,98},
- {0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
- {128,7,7},{0,8,90},{0,8,26},{0,9,149},{132,7,67},{0,8,122},
- {0,8,58},{0,9,213},{130,7,19},{0,8,106},{0,8,42},{0,9,181},
- {0,8,10},{0,8,138},{0,8,74},{0,9,245},{128,7,5},{0,8,86},
- {0,8,22},{65,8,0},{131,7,51},{0,8,118},{0,8,54},{0,9,205},
- {129,7,15},{0,8,102},{0,8,38},{0,9,173},{0,8,6},{0,8,134},
- {0,8,70},{0,9,237},{128,7,9},{0,8,94},{0,8,30},{0,9,157},
- {132,7,99},{0,8,126},{0,8,62},{0,9,221},{130,7,27},{0,8,110},
- {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},
- {96,7,0},{0,8,81},{0,8,17},{133,8,131},{130,7,31},{0,8,113},
- {0,8,49},{0,9,195},{128,7,10},{0,8,97},{0,8,33},{0,9,163},
- {0,8,1},{0,8,129},{0,8,65},{0,9,227},{128,7,6},{0,8,89},
- {0,8,25},{0,9,147},{131,7,59},{0,8,121},{0,8,57},{0,9,211},
- {129,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},{0,8,137},
- {0,8,73},{0,9,243},{128,7,4},{0,8,85},{0,8,21},{144,8,3},
- {131,7,43},{0,8,117},{0,8,53},{0,9,203},{129,7,13},{0,8,101},
- {0,8,37},{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},
- {128,7,8},{0,8,93},{0,8,29},{0,9,155},{132,7,83},{0,8,125},
- {0,8,61},{0,9,219},{130,7,23},{0,8,109},{0,8,45},{0,9,187},
- {0,8,13},{0,8,141},{0,8,77},{0,9,251},{128,7,3},{0,8,83},
- {0,8,19},{133,8,195},{131,7,35},{0,8,115},{0,8,51},{0,9,199},
- {129,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
- {0,8,67},{0,9,231},{128,7,7},{0,8,91},{0,8,27},{0,9,151},
- {132,7,67},{0,8,123},{0,8,59},{0,9,215},{130,7,19},{0,8,107},
- {0,8,43},{0,9,183},{0,8,11},{0,8,139},{0,8,75},{0,9,247},
- {128,7,5},{0,8,87},{0,8,23},{77,8,0},{131,7,51},{0,8,119},
- {0,8,55},{0,9,207},{129,7,15},{0,8,103},{0,8,39},{0,9,175},
- {0,8,7},{0,8,135},{0,8,71},{0,9,239},{128,7,9},{0,8,95},
- {0,8,31},{0,9,159},{132,7,99},{0,8,127},{0,8,63},{0,9,223},
- {130,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},
- {0,8,79},{0,9,255}
- };
-
- static const code distfix[32] = {
- {128,5,1},{135,5,257},{131,5,17},{139,5,4097},{129,5,5},
- {137,5,1025},{133,5,65},{141,5,16385},{128,5,3},{136,5,513},
- {132,5,33},{140,5,8193},{130,5,9},{138,5,2049},{134,5,129},
- {142,5,32769},{128,5,2},{135,5,385},{131,5,25},{139,5,6145},
- {129,5,7},{137,5,1537},{133,5,97},{141,5,24577},{128,5,4},
- {136,5,769},{132,5,49},{140,5,12289},{130,5,13},{138,5,3073},
- {134,5,193},{142,5,49153}
- };
+++ /dev/null
-/* inflate9.h -- internal inflate state definition
- * Copyright (C) 1995-2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* Possible inflate modes between inflate() calls */
-typedef enum {
- TYPE, /* i: waiting for type bits, including last-flag bit */
- STORED, /* i: waiting for stored size (length and complement) */
- TABLE, /* i: waiting for dynamic block table lengths */
- LEN, /* i: waiting for length/lit code */
- DONE, /* finished check, done -- remain here until reset */
- BAD /* got a data error -- remain here until reset */
-} inflate_mode;
-
-/*
- State transitions between above modes -
-
- (most modes can go to the BAD mode -- not shown for clarity)
-
- Read deflate blocks:
- TYPE -> STORED or TABLE or LEN or DONE
- STORED -> TYPE
- TABLE -> LENLENS -> CODELENS -> LEN
- Read deflate codes:
- LEN -> LEN or TYPE
- */
-
-/* state maintained between inflate() calls. Approximately 7K bytes. */
-struct inflate_state {
- /* sliding window */
- unsigned char FAR *window; /* allocated sliding window, if needed */
- /* dynamic table building */
- unsigned ncode; /* number of code length code lengths */
- unsigned nlen; /* number of length code lengths */
- unsigned ndist; /* number of distance code lengths */
- unsigned have; /* number of code lengths in lens[] */
- code FAR *next; /* next available space in codes[] */
- unsigned short lens[320]; /* temporary storage for code lengths */
- unsigned short work[288]; /* work area for code table building */
- code codes[ENOUGH]; /* space for code tables */
-};
+++ /dev/null
-/* inftree9.c -- generate Huffman trees for efficient decoding
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "zutil.h"
-#include "inftree9.h"
-
-#define MAXBITS 15
-
-const char inflate9_copyright[] =
- " inflate9 1.2.3 Copyright 1995-2005 Mark Adler ";
-/*
- If you use the zlib library in a product, an acknowledgment is welcome
- in the documentation of your product. If for some reason you cannot
- include such an acknowledgment, I would appreciate that you keep this
- copyright string in the executable of your product.
- */
-
-/*
- Build a set of tables to decode the provided canonical Huffman code.
- The code lengths are lens[0..codes-1]. The result starts at *table,
- whose indices are 0..2^bits-1. work is a writable array of at least
- lens shorts, which is used as a work area. type is the type of code
- to be generated, CODES, LENS, or DISTS. On return, zero is success,
- -1 is an invalid code, and +1 means that ENOUGH isn't enough. table
- on return points to the next available entry's address. bits is the
- requested root table index bits, and on return it is the actual root
- table index bits. It will differ if the request is greater than the
- longest code or if it is less than the shortest code.
- */
-int inflate_table9(type, lens, codes, table, bits, work)
-codetype type;
-unsigned short FAR *lens;
-unsigned codes;
-code FAR * FAR *table;
-unsigned FAR *bits;
-unsigned short FAR *work;
-{
- unsigned len; /* a code's length in bits */
- unsigned sym; /* index of code symbols */
- unsigned min, max; /* minimum and maximum code lengths */
- unsigned root; /* number of index bits for root table */
- unsigned curr; /* number of index bits for current table */
- unsigned drop; /* code bits to drop for sub-table */
- int left; /* number of prefix codes available */
- unsigned used; /* code entries in table used */
- unsigned huff; /* Huffman code */
- unsigned incr; /* for incrementing code, index */
- unsigned fill; /* index for replicating entries */
- unsigned low; /* low bits for current root entry */
- unsigned mask; /* mask for low root bits */
- code this; /* table entry for duplication */
- code FAR *next; /* next available space in table */
- const unsigned short FAR *base; /* base value table to use */
- const unsigned short FAR *extra; /* extra bits table to use */
- int end; /* use base and extra for symbol > end */
- unsigned short count[MAXBITS+1]; /* number of codes of each length */
- unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
- static const unsigned short lbase[31] = { /* Length codes 257..285 base */
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17,
- 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115,
- 131, 163, 195, 227, 3, 0, 0};
- static const unsigned short lext[31] = { /* Length codes 257..285 extra */
- 128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
- 130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
- 133, 133, 133, 133, 144, 201, 196};
- static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
- 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
- 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
- 4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153};
- static const unsigned short dext[32] = { /* Distance codes 0..31 extra */
- 128, 128, 128, 128, 129, 129, 130, 130, 131, 131, 132, 132,
- 133, 133, 134, 134, 135, 135, 136, 136, 137, 137, 138, 138,
- 139, 139, 140, 140, 141, 141, 142, 142};
-
- /*
- Process a set of code lengths to create a canonical Huffman code. The
- code lengths are lens[0..codes-1]. Each length corresponds to the
- symbols 0..codes-1. The Huffman code is generated by first sorting the
- symbols by length from short to long, and retaining the symbol order
- for codes with equal lengths. Then the code starts with all zero bits
- for the first code of the shortest length, and the codes are integer
- increments for the same length, and zeros are appended as the length
- increases. For the deflate format, these bits are stored backwards
- from their more natural integer increment ordering, and so when the
- decoding tables are built in the large loop below, the integer codes
- are incremented backwards.
-
- This routine assumes, but does not check, that all of the entries in
- lens[] are in the range 0..MAXBITS. The caller must assure this.
- 1..MAXBITS is interpreted as that code length. zero means that that
- symbol does not occur in this code.
-
- The codes are sorted by computing a count of codes for each length,
- creating from that a table of starting indices for each length in the
- sorted table, and then entering the symbols in order in the sorted
- table. The sorted table is work[], with that space being provided by
- the caller.
-
- The length counts are used for other purposes as well, i.e. finding
- the minimum and maximum length codes, determining if there are any
- codes at all, checking for a valid set of lengths, and looking ahead
- at length counts to determine sub-table sizes when building the
- decoding tables.
- */
-
- /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
- for (len = 0; len <= MAXBITS; len++)
- count[len] = 0;
- for (sym = 0; sym < codes; sym++)
- count[lens[sym]]++;
-
- /* bound code lengths, force root to be within code lengths */
- root = *bits;
- for (max = MAXBITS; max >= 1; max--)
- if (count[max] != 0) break;
- if (root > max) root = max;
- if (max == 0) return -1; /* no codes! */
- for (min = 1; min <= MAXBITS; min++)
- if (count[min] != 0) break;
- if (root < min) root = min;
-
- /* check for an over-subscribed or incomplete set of lengths */
- left = 1;
- for (len = 1; len <= MAXBITS; len++) {
- left <<= 1;
- left -= count[len];
- if (left < 0) return -1; /* over-subscribed */
- }
- if (left > 0 && (type == CODES || max != 1))
- return -1; /* incomplete set */
-
- /* generate offsets into symbol table for each length for sorting */
- offs[1] = 0;
- for (len = 1; len < MAXBITS; len++)
- offs[len + 1] = offs[len] + count[len];
-
- /* sort symbols by length, by symbol order within each length */
- for (sym = 0; sym < codes; sym++)
- if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
-
- /*
- Create and fill in decoding tables. In this loop, the table being
- filled is at next and has curr index bits. The code being used is huff
- with length len. That code is converted to an index by dropping drop
- bits off of the bottom. For codes where len is less than drop + curr,
- those top drop + curr - len bits are incremented through all values to
- fill the table with replicated entries.
-
- root is the number of index bits for the root table. When len exceeds
- root, sub-tables are created pointed to by the root entry with an index
- of the low root bits of huff. This is saved in low to check for when a
- new sub-table should be started. drop is zero when the root table is
- being filled, and drop is root when sub-tables are being filled.
-
- When a new sub-table is needed, it is necessary to look ahead in the
- code lengths to determine what size sub-table is needed. The length
- counts are used for this, and so count[] is decremented as codes are
- entered in the tables.
-
- used keeps track of how many table entries have been allocated from the
- provided *table space. It is checked when a LENS table is being made
- against the space in *table, ENOUGH, minus the maximum space needed by
- the worst case distance code, MAXD. This should never happen, but the
- sufficiency of ENOUGH has not been proven exhaustively, hence the check.
- This assumes that when type == LENS, bits == 9.
-
- sym increments through all symbols, and the loop terminates when
- all codes of length max, i.e. all codes, have been processed. This
- routine permits incomplete codes, so another loop after this one fills
- in the rest of the decoding tables with invalid code markers.
- */
-
- /* set up for code type */
- switch (type) {
- case CODES:
- base = extra = work; /* dummy value--not used */
- end = 19;
- break;
- case LENS:
- base = lbase;
- base -= 257;
- extra = lext;
- extra -= 257;
- end = 256;
- break;
- default: /* DISTS */
- base = dbase;
- extra = dext;
- end = -1;
- }
-
- /* initialize state for loop */
- huff = 0; /* starting code */
- sym = 0; /* starting code symbol */
- len = min; /* starting code length */
- next = *table; /* current table to fill in */
- curr = root; /* current table index bits */
- drop = 0; /* current bits to drop from code for index */
- low = (unsigned)(-1); /* trigger new sub-table when len > root */
- used = 1U << root; /* use root table entries */
- mask = used - 1; /* mask for comparing low */
-
- /* check available table space */
- if (type == LENS && used >= ENOUGH - MAXD)
- return 1;
-
- /* process all codes and make table entries */
- for (;;) {
- /* create table entry */
- this.bits = (unsigned char)(len - drop);
- if ((int)(work[sym]) < end) {
- this.op = (unsigned char)0;
- this.val = work[sym];
- }
- else if ((int)(work[sym]) > end) {
- this.op = (unsigned char)(extra[work[sym]]);
- this.val = base[work[sym]];
- }
- else {
- this.op = (unsigned char)(32 + 64); /* end of block */
- this.val = 0;
- }
-
- /* replicate for those indices with low len bits equal to huff */
- incr = 1U << (len - drop);
- fill = 1U << curr;
- do {
- fill -= incr;
- next[(huff >> drop) + fill] = this;
- } while (fill != 0);
-
- /* backwards increment the len-bit code huff */
- incr = 1U << (len - 1);
- while (huff & incr)
- incr >>= 1;
- if (incr != 0) {
- huff &= incr - 1;
- huff += incr;
- }
- else
- huff = 0;
-
- /* go to next symbol, update count, len */
- sym++;
- if (--(count[len]) == 0) {
- if (len == max) break;
- len = lens[work[sym]];
- }
-
- /* create new sub-table if needed */
- if (len > root && (huff & mask) != low) {
- /* if first time, transition to sub-tables */
- if (drop == 0)
- drop = root;
-
- /* increment past last table */
- next += 1U << curr;
-
- /* determine length of next table */
- curr = len - drop;
- left = (int)(1 << curr);
- while (curr + drop < max) {
- left -= count[curr + drop];
- if (left <= 0) break;
- curr++;
- left <<= 1;
- }
-
- /* check for enough space */
- used += 1U << curr;
- if (type == LENS && used >= ENOUGH - MAXD)
- return 1;
-
- /* point entry in root table to sub-table */
- low = huff & mask;
- (*table)[low].op = (unsigned char)curr;
- (*table)[low].bits = (unsigned char)root;
- (*table)[low].val = (unsigned short)(next - *table);
- }
- }
-
- /*
- Fill in rest of table for incomplete codes. This loop is similar to the
- loop above in incrementing huff for table indices. It is assumed that
- len is equal to curr + drop, so there is no loop needed to increment
- through high index bits. When the current sub-table is filled, the loop
- drops back to the root table to fill in any remaining entries there.
- */
- this.op = (unsigned char)64; /* invalid code marker */
- this.bits = (unsigned char)(len - drop);
- this.val = (unsigned short)0;
- while (huff != 0) {
- /* when done with sub-table, drop back to root table */
- if (drop != 0 && (huff & mask) != low) {
- drop = 0;
- len = root;
- next = *table;
- curr = root;
- this.bits = (unsigned char)len;
- }
-
- /* put invalid code marker in table */
- next[huff >> drop] = this;
-
- /* backwards increment the len-bit code huff */
- incr = 1U << (len - 1);
- while (huff & incr)
- incr >>= 1;
- if (incr != 0) {
- huff &= incr - 1;
- huff += incr;
- }
- else
- huff = 0;
- }
-
- /* set return parameters */
- *table += used;
- *bits = root;
- return 0;
-}
+++ /dev/null
-/* inftree9.h -- header to use inftree9.c
- * Copyright (C) 1995-2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* Structure for decoding tables. Each entry provides either the
- information needed to do the operation requested by the code that
- indexed that table entry, or it provides a pointer to another
- table that indexes more bits of the code. op indicates whether
- the entry is a pointer to another table, a literal, a length or
- distance, an end-of-block, or an invalid code. For a table
- pointer, the low four bits of op is the number of index bits of
- that table. For a length or distance, the low four bits of op
- is the number of extra bits to get after the code. bits is
- the number of bits in this code or part of the code to drop off
- of the bit buffer. val is the actual byte to output in the case
- of a literal, the base length or distance, or the offset from
- the current table to the next table. Each entry is four bytes. */
-typedef struct {
- unsigned char op; /* operation, extra bits, table bits */
- unsigned char bits; /* bits in this part of the code */
- unsigned short val; /* offset in table or code value */
-} code;
-
-/* op values as set by inflate_table():
- 00000000 - literal
- 0000tttt - table link, tttt != 0 is the number of table index bits
- 100eeeee - length or distance, eeee is the number of extra bits
- 01100000 - end of block
- 01000000 - invalid code
- */
-
-/* Maximum size of dynamic tree. The maximum found in a long but non-
- exhaustive search was 1444 code structures (852 for length/literals
- and 592 for distances, the latter actually the result of an
- exhaustive search). The true maximum is not known, but the value
- below is more than safe. */
-#define ENOUGH 2048
-#define MAXD 592
-
-/* Type of code to build for inftable() */
-typedef enum {
- CODES,
- LENS,
- DISTS
-} codetype;
-
-extern int inflate_table9 OF((codetype type, unsigned short FAR *lens,
- unsigned codes, code FAR * FAR *table,
- unsigned FAR *bits, unsigned short FAR *work));
+++ /dev/null
-/* inffas86.c is a hand tuned assembler version of
- *
- * inffast.c -- fast decoding
- * Copyright (C) 1995-2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Copyright (C) 2003 Chris Anderson <christop@charm.net>
- * Please use the copyright conditions above.
- *
- * Dec-29-2003 -- I added AMD64 inflate asm support. This version is also
- * slightly quicker on x86 systems because, instead of using rep movsb to copy
- * data, it uses rep movsw, which moves data in 2-byte chunks instead of single
- * bytes. I've tested the AMD64 code on a Fedora Core 1 + the x86_64 updates
- * from http://fedora.linux.duke.edu/fc1_x86_64
- * which is running on an Athlon 64 3000+ / Gigabyte GA-K8VT800M system with
- * 1GB ram. The 64-bit version is about 4% faster than the 32-bit version,
- * when decompressing mozilla-source-1.3.tar.gz.
- *
- * Mar-13-2003 -- Most of this is derived from inffast.S which is derived from
- * the gcc -S output of zlib-1.2.0/inffast.c. Zlib-1.2.0 is in beta release at
- * the moment. I have successfully compiled and tested this code with gcc2.96,
- * gcc3.2, icc5.0, msvc6.0. It is very close to the speed of inffast.S
- * compiled with gcc -DNO_MMX, but inffast.S is still faster on the P3 with MMX
- * enabled. I will attempt to merge the MMX code into this version. Newer
- * versions of this and inffast.S can be found at
- * http://www.eetbeetee.com/zlib/ and http://www.charm.net/~christop/zlib/
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-/* Mark Adler's comments from inffast.c: */
-
-/*
- Decode literal, length, and distance codes and write out the resulting
- literal and match bytes until either not enough input or output is
- available, an end-of-block is encountered, or a data error is encountered.
- When large enough input and output buffers are supplied to inflate(), for
- example, a 16K input buffer and a 64K output buffer, more than 95% of the
- inflate execution time is spent in this routine.
-
- Entry assumptions:
-
- state->mode == LEN
- strm->avail_in >= 6
- strm->avail_out >= 258
- start >= strm->avail_out
- state->bits < 8
-
- On return, state->mode is one of:
-
- LEN -- ran out of enough output space or enough available input
- TYPE -- reached end of block code, inflate() to interpret next block
- BAD -- error in block data
-
- Notes:
-
- - The maximum input bits used by a length/distance pair is 15 bits for the
- length code, 5 bits for the length extra, 15 bits for the distance code,
- and 13 bits for the distance extra. This totals 48 bits, or six bytes.
- Therefore if strm->avail_in >= 6, then there is enough input to avoid
- checking for available input while decoding.
-
- - The maximum bytes that a single length/distance pair can output is 258
- bytes, which is the maximum length that can be coded. inflate_fast()
- requires strm->avail_out >= 258 for each loop to avoid checking for
- output space.
- */
-void inflate_fast(strm, start)
-z_streamp strm;
-unsigned start; /* inflate()'s starting value for strm->avail_out */
-{
- struct inflate_state FAR *state;
- struct inffast_ar {
-/* 64 32 x86 x86_64 */
-/* ar offset register */
-/* 0 0 */ void *esp; /* esp save */
-/* 8 4 */ void *ebp; /* ebp save */
-/* 16 8 */ unsigned char FAR *in; /* esi rsi local strm->next_in */
-/* 24 12 */ unsigned char FAR *last; /* r9 while in < last */
-/* 32 16 */ unsigned char FAR *out; /* edi rdi local strm->next_out */
-/* 40 20 */ unsigned char FAR *beg; /* inflate()'s init next_out */
-/* 48 24 */ unsigned char FAR *end; /* r10 while out < end */
-/* 56 28 */ unsigned char FAR *window;/* size of window, wsize!=0 */
-/* 64 32 */ code const FAR *lcode; /* ebp rbp local strm->lencode */
-/* 72 36 */ code const FAR *dcode; /* r11 local strm->distcode */
-/* 80 40 */ unsigned long hold; /* edx rdx local strm->hold */
-/* 88 44 */ unsigned bits; /* ebx rbx local strm->bits */
-/* 92 48 */ unsigned wsize; /* window size */
-/* 96 52 */ unsigned write; /* window write index */
-/*100 56 */ unsigned lmask; /* r12 mask for lcode */
-/*104 60 */ unsigned dmask; /* r13 mask for dcode */
-/*108 64 */ unsigned len; /* r14 match length */
-/*112 68 */ unsigned dist; /* r15 match distance */
-/*116 72 */ unsigned status; /* set when state chng*/
- } ar;
-
-#if defined( __GNUC__ ) && defined( __amd64__ ) && ! defined( __i386 )
-#define PAD_AVAIL_IN 6
-#define PAD_AVAIL_OUT 258
-#else
-#define PAD_AVAIL_IN 5
-#define PAD_AVAIL_OUT 257
-#endif
-
- /* copy state to local variables */
- state = (struct inflate_state FAR *)strm->state;
- ar.in = strm->next_in;
- ar.last = ar.in + (strm->avail_in - PAD_AVAIL_IN);
- ar.out = strm->next_out;
- ar.beg = ar.out - (start - strm->avail_out);
- ar.end = ar.out + (strm->avail_out - PAD_AVAIL_OUT);
- ar.wsize = state->wsize;
- ar.write = state->write;
- ar.window = state->window;
- ar.hold = state->hold;
- ar.bits = state->bits;
- ar.lcode = state->lencode;
- ar.dcode = state->distcode;
- ar.lmask = (1U << state->lenbits) - 1;
- ar.dmask = (1U << state->distbits) - 1;
-
- /* decode literals and length/distances until end-of-block or not enough
- input data or output space */
-
- /* align in on 1/2 hold size boundary */
- while (((unsigned long)(void *)ar.in & (sizeof(ar.hold) / 2 - 1)) != 0) {
- ar.hold += (unsigned long)*ar.in++ << ar.bits;
- ar.bits += 8;
- }
-
-#if defined( __GNUC__ ) && defined( __amd64__ ) && ! defined( __i386 )
- __asm__ __volatile__ (
-" leaq %0, %%rax\n"
-" movq %%rbp, 8(%%rax)\n" /* save regs rbp and rsp */
-" movq %%rsp, (%%rax)\n"
-" movq %%rax, %%rsp\n" /* make rsp point to &ar */
-" movq 16(%%rsp), %%rsi\n" /* rsi = in */
-" movq 32(%%rsp), %%rdi\n" /* rdi = out */
-" movq 24(%%rsp), %%r9\n" /* r9 = last */
-" movq 48(%%rsp), %%r10\n" /* r10 = end */
-" movq 64(%%rsp), %%rbp\n" /* rbp = lcode */
-" movq 72(%%rsp), %%r11\n" /* r11 = dcode */
-" movq 80(%%rsp), %%rdx\n" /* rdx = hold */
-" movl 88(%%rsp), %%ebx\n" /* ebx = bits */
-" movl 100(%%rsp), %%r12d\n" /* r12d = lmask */
-" movl 104(%%rsp), %%r13d\n" /* r13d = dmask */
- /* r14d = len */
- /* r15d = dist */
-" cld\n"
-" cmpq %%rdi, %%r10\n"
-" je .L_one_time\n" /* if only one decode left */
-" cmpq %%rsi, %%r9\n"
-" je .L_one_time\n"
-" jmp .L_do_loop\n"
-
-".L_one_time:\n"
-" movq %%r12, %%r8\n" /* r8 = lmask */
-" cmpb $32, %%bl\n"
-" ja .L_get_length_code_one_time\n"
-
-" lodsl\n" /* eax = *(uint *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $32, %%bl\n" /* bits += 32 */
-" shlq %%cl, %%rax\n"
-" orq %%rax, %%rdx\n" /* hold |= *((uint *)in)++ << bits */
-" jmp .L_get_length_code_one_time\n"
-
-".align 32,0x90\n"
-".L_while_test:\n"
-" cmpq %%rdi, %%r10\n"
-" jbe .L_break_loop\n"
-" cmpq %%rsi, %%r9\n"
-" jbe .L_break_loop\n"
-
-".L_do_loop:\n"
-" movq %%r12, %%r8\n" /* r8 = lmask */
-" cmpb $32, %%bl\n"
-" ja .L_get_length_code\n" /* if (32 < bits) */
-
-" lodsl\n" /* eax = *(uint *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $32, %%bl\n" /* bits += 32 */
-" shlq %%cl, %%rax\n"
-" orq %%rax, %%rdx\n" /* hold |= *((uint *)in)++ << bits */
-
-".L_get_length_code:\n"
-" andq %%rdx, %%r8\n" /* r8 &= hold */
-" movl (%%rbp,%%r8,4), %%eax\n" /* eax = lcode[hold & lmask] */
-
-" movb %%ah, %%cl\n" /* cl = this.bits */
-" subb %%ah, %%bl\n" /* bits -= this.bits */
-" shrq %%cl, %%rdx\n" /* hold >>= this.bits */
-
-" testb %%al, %%al\n"
-" jnz .L_test_for_length_base\n" /* if (op != 0) 45.7% */
-
-" movq %%r12, %%r8\n" /* r8 = lmask */
-" shrl $16, %%eax\n" /* output this.val char */
-" stosb\n"
-
-".L_get_length_code_one_time:\n"
-" andq %%rdx, %%r8\n" /* r8 &= hold */
-" movl (%%rbp,%%r8,4), %%eax\n" /* eax = lcode[hold & lmask] */
-
-".L_dolen:\n"
-" movb %%ah, %%cl\n" /* cl = this.bits */
-" subb %%ah, %%bl\n" /* bits -= this.bits */
-" shrq %%cl, %%rdx\n" /* hold >>= this.bits */
-
-" testb %%al, %%al\n"
-" jnz .L_test_for_length_base\n" /* if (op != 0) 45.7% */
-
-" shrl $16, %%eax\n" /* output this.val char */
-" stosb\n"
-" jmp .L_while_test\n"
-
-".align 32,0x90\n"
-".L_test_for_length_base:\n"
-" movl %%eax, %%r14d\n" /* len = this */
-" shrl $16, %%r14d\n" /* len = this.val */
-" movb %%al, %%cl\n"
-
-" testb $16, %%al\n"
-" jz .L_test_for_second_level_length\n" /* if ((op & 16) == 0) 8% */
-" andb $15, %%cl\n" /* op &= 15 */
-" jz .L_decode_distance\n" /* if (!op) */
-
-".L_add_bits_to_len:\n"
-" subb %%cl, %%bl\n"
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n"
-" andl %%edx, %%eax\n" /* eax &= hold */
-" shrq %%cl, %%rdx\n"
-" addl %%eax, %%r14d\n" /* len += hold & mask[op] */
-
-".L_decode_distance:\n"
-" movq %%r13, %%r8\n" /* r8 = dmask */
-" cmpb $32, %%bl\n"
-" ja .L_get_distance_code\n" /* if (32 < bits) */
-
-" lodsl\n" /* eax = *(uint *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $32, %%bl\n" /* bits += 32 */
-" shlq %%cl, %%rax\n"
-" orq %%rax, %%rdx\n" /* hold |= *((uint *)in)++ << bits */
-
-".L_get_distance_code:\n"
-" andq %%rdx, %%r8\n" /* r8 &= hold */
-" movl (%%r11,%%r8,4), %%eax\n" /* eax = dcode[hold & dmask] */
-
-".L_dodist:\n"
-" movl %%eax, %%r15d\n" /* dist = this */
-" shrl $16, %%r15d\n" /* dist = this.val */
-" movb %%ah, %%cl\n"
-" subb %%ah, %%bl\n" /* bits -= this.bits */
-" shrq %%cl, %%rdx\n" /* hold >>= this.bits */
-" movb %%al, %%cl\n" /* cl = this.op */
-
-" testb $16, %%al\n" /* if ((op & 16) == 0) */
-" jz .L_test_for_second_level_dist\n"
-" andb $15, %%cl\n" /* op &= 15 */
-" jz .L_check_dist_one\n"
-
-".L_add_bits_to_dist:\n"
-" subb %%cl, %%bl\n"
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n" /* (1 << op) - 1 */
-" andl %%edx, %%eax\n" /* eax &= hold */
-" shrq %%cl, %%rdx\n"
-" addl %%eax, %%r15d\n" /* dist += hold & ((1 << op) - 1) */
-
-".L_check_window:\n"
-" movq %%rsi, %%r8\n" /* save in so from can use it's reg */
-" movq %%rdi, %%rax\n"
-" subq 40(%%rsp), %%rax\n" /* nbytes = out - beg */
-
-" cmpl %%r15d, %%eax\n"
-" jb .L_clip_window\n" /* if (dist > nbytes) 4.2% */
-
-" movl %%r14d, %%ecx\n" /* ecx = len */
-" movq %%rdi, %%rsi\n"
-" subq %%r15, %%rsi\n" /* from = out - dist */
-
-" sarl %%ecx\n"
-" jnc .L_copy_two\n" /* if len % 2 == 0 */
-
-" rep movsw\n"
-" movb (%%rsi), %%al\n"
-" movb %%al, (%%rdi)\n"
-" incq %%rdi\n"
-
-" movq %%r8, %%rsi\n" /* move in back to %rsi, toss from */
-" jmp .L_while_test\n"
-
-".L_copy_two:\n"
-" rep movsw\n"
-" movq %%r8, %%rsi\n" /* move in back to %rsi, toss from */
-" jmp .L_while_test\n"
-
-".align 32,0x90\n"
-".L_check_dist_one:\n"
-" cmpl $1, %%r15d\n" /* if dist 1, is a memset */
-" jne .L_check_window\n"
-" cmpq %%rdi, 40(%%rsp)\n" /* if out == beg, outside window */
-" je .L_check_window\n"
-
-" movl %%r14d, %%ecx\n" /* ecx = len */
-" movb -1(%%rdi), %%al\n"
-" movb %%al, %%ah\n"
-
-" sarl %%ecx\n"
-" jnc .L_set_two\n"
-" movb %%al, (%%rdi)\n"
-" incq %%rdi\n"
-
-".L_set_two:\n"
-" rep stosw\n"
-" jmp .L_while_test\n"
-
-".align 32,0x90\n"
-".L_test_for_second_level_length:\n"
-" testb $64, %%al\n"
-" jnz .L_test_for_end_of_block\n" /* if ((op & 64) != 0) */
-
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n"
-" andl %%edx, %%eax\n" /* eax &= hold */
-" addl %%r14d, %%eax\n" /* eax += len */
-" movl (%%rbp,%%rax,4), %%eax\n" /* eax = lcode[val+(hold&mask[op])]*/
-" jmp .L_dolen\n"
-
-".align 32,0x90\n"
-".L_test_for_second_level_dist:\n"
-" testb $64, %%al\n"
-" jnz .L_invalid_distance_code\n" /* if ((op & 64) != 0) */
-
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n"
-" andl %%edx, %%eax\n" /* eax &= hold */
-" addl %%r15d, %%eax\n" /* eax += dist */
-" movl (%%r11,%%rax,4), %%eax\n" /* eax = dcode[val+(hold&mask[op])]*/
-" jmp .L_dodist\n"
-
-".align 32,0x90\n"
-".L_clip_window:\n"
-" movl %%eax, %%ecx\n" /* ecx = nbytes */
-" movl 92(%%rsp), %%eax\n" /* eax = wsize, prepare for dist cmp */
-" negl %%ecx\n" /* nbytes = -nbytes */
-
-" cmpl %%r15d, %%eax\n"
-" jb .L_invalid_distance_too_far\n" /* if (dist > wsize) */
-
-" addl %%r15d, %%ecx\n" /* nbytes = dist - nbytes */
-" cmpl $0, 96(%%rsp)\n"
-" jne .L_wrap_around_window\n" /* if (write != 0) */
-
-" movq 56(%%rsp), %%rsi\n" /* from = window */
-" subl %%ecx, %%eax\n" /* eax -= nbytes */
-" addq %%rax, %%rsi\n" /* from += wsize - nbytes */
-
-" movl %%r14d, %%eax\n" /* eax = len */
-" cmpl %%ecx, %%r14d\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* eax -= nbytes */
-" rep movsb\n"
-" movq %%rdi, %%rsi\n"
-" subq %%r15, %%rsi\n" /* from = &out[ -dist ] */
-" jmp .L_do_copy\n"
-
-".align 32,0x90\n"
-".L_wrap_around_window:\n"
-" movl 96(%%rsp), %%eax\n" /* eax = write */
-" cmpl %%eax, %%ecx\n"
-" jbe .L_contiguous_in_window\n" /* if (write >= nbytes) */
-
-" movl 92(%%rsp), %%esi\n" /* from = wsize */
-" addq 56(%%rsp), %%rsi\n" /* from += window */
-" addq %%rax, %%rsi\n" /* from += write */
-" subq %%rcx, %%rsi\n" /* from -= nbytes */
-" subl %%eax, %%ecx\n" /* nbytes -= write */
-
-" movl %%r14d, %%eax\n" /* eax = len */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movq 56(%%rsp), %%rsi\n" /* from = window */
-" movl 96(%%rsp), %%ecx\n" /* nbytes = write */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movq %%rdi, %%rsi\n"
-" subq %%r15, %%rsi\n" /* from = out - dist */
-" jmp .L_do_copy\n"
-
-".align 32,0x90\n"
-".L_contiguous_in_window:\n"
-" movq 56(%%rsp), %%rsi\n" /* rsi = window */
-" addq %%rax, %%rsi\n"
-" subq %%rcx, %%rsi\n" /* from += write - nbytes */
-
-" movl %%r14d, %%eax\n" /* eax = len */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movq %%rdi, %%rsi\n"
-" subq %%r15, %%rsi\n" /* from = out - dist */
-" jmp .L_do_copy\n" /* if (nbytes >= len) */
-
-".align 32,0x90\n"
-".L_do_copy:\n"
-" movl %%eax, %%ecx\n" /* ecx = len */
-" rep movsb\n"
-
-" movq %%r8, %%rsi\n" /* move in back to %esi, toss from */
-" jmp .L_while_test\n"
-
-".L_test_for_end_of_block:\n"
-" testb $32, %%al\n"
-" jz .L_invalid_literal_length_code\n"
-" movl $1, 116(%%rsp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_invalid_literal_length_code:\n"
-" movl $2, 116(%%rsp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_invalid_distance_code:\n"
-" movl $3, 116(%%rsp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_invalid_distance_too_far:\n"
-" movl $4, 116(%%rsp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_break_loop:\n"
-" movl $0, 116(%%rsp)\n"
-
-".L_break_loop_with_status:\n"
-/* put in, out, bits, and hold back into ar and pop esp */
-" movq %%rsi, 16(%%rsp)\n" /* in */
-" movq %%rdi, 32(%%rsp)\n" /* out */
-" movl %%ebx, 88(%%rsp)\n" /* bits */
-" movq %%rdx, 80(%%rsp)\n" /* hold */
-" movq (%%rsp), %%rax\n" /* restore rbp and rsp */
-" movq 8(%%rsp), %%rbp\n"
-" movq %%rax, %%rsp\n"
- :
- : "m" (ar)
- : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi",
- "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
- );
-#elif ( defined( __GNUC__ ) || defined( __ICC ) ) && defined( __i386 )
- __asm__ __volatile__ (
-" leal %0, %%eax\n"
-" movl %%esp, (%%eax)\n" /* save esp, ebp */
-" movl %%ebp, 4(%%eax)\n"
-" movl %%eax, %%esp\n"
-" movl 8(%%esp), %%esi\n" /* esi = in */
-" movl 16(%%esp), %%edi\n" /* edi = out */
-" movl 40(%%esp), %%edx\n" /* edx = hold */
-" movl 44(%%esp), %%ebx\n" /* ebx = bits */
-" movl 32(%%esp), %%ebp\n" /* ebp = lcode */
-
-" cld\n"
-" jmp .L_do_loop\n"
-
-".align 32,0x90\n"
-".L_while_test:\n"
-" cmpl %%edi, 24(%%esp)\n" /* out < end */
-" jbe .L_break_loop\n"
-" cmpl %%esi, 12(%%esp)\n" /* in < last */
-" jbe .L_break_loop\n"
-
-".L_do_loop:\n"
-" cmpb $15, %%bl\n"
-" ja .L_get_length_code\n" /* if (15 < bits) */
-
-" xorl %%eax, %%eax\n"
-" lodsw\n" /* al = *(ushort *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $16, %%bl\n" /* bits += 16 */
-" shll %%cl, %%eax\n"
-" orl %%eax, %%edx\n" /* hold |= *((ushort *)in)++ << bits */
-
-".L_get_length_code:\n"
-" movl 56(%%esp), %%eax\n" /* eax = lmask */
-" andl %%edx, %%eax\n" /* eax &= hold */
-" movl (%%ebp,%%eax,4), %%eax\n" /* eax = lcode[hold & lmask] */
-
-".L_dolen:\n"
-" movb %%ah, %%cl\n" /* cl = this.bits */
-" subb %%ah, %%bl\n" /* bits -= this.bits */
-" shrl %%cl, %%edx\n" /* hold >>= this.bits */
-
-" testb %%al, %%al\n"
-" jnz .L_test_for_length_base\n" /* if (op != 0) 45.7% */
-
-" shrl $16, %%eax\n" /* output this.val char */
-" stosb\n"
-" jmp .L_while_test\n"
-
-".align 32,0x90\n"
-".L_test_for_length_base:\n"
-" movl %%eax, %%ecx\n" /* len = this */
-" shrl $16, %%ecx\n" /* len = this.val */
-" movl %%ecx, 64(%%esp)\n" /* save len */
-" movb %%al, %%cl\n"
-
-" testb $16, %%al\n"
-" jz .L_test_for_second_level_length\n" /* if ((op & 16) == 0) 8% */
-" andb $15, %%cl\n" /* op &= 15 */
-" jz .L_decode_distance\n" /* if (!op) */
-" cmpb %%cl, %%bl\n"
-" jae .L_add_bits_to_len\n" /* if (op <= bits) */
-
-" movb %%cl, %%ch\n" /* stash op in ch, freeing cl */
-" xorl %%eax, %%eax\n"
-" lodsw\n" /* al = *(ushort *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $16, %%bl\n" /* bits += 16 */
-" shll %%cl, %%eax\n"
-" orl %%eax, %%edx\n" /* hold |= *((ushort *)in)++ << bits */
-" movb %%ch, %%cl\n" /* move op back to ecx */
-
-".L_add_bits_to_len:\n"
-" subb %%cl, %%bl\n"
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n"
-" andl %%edx, %%eax\n" /* eax &= hold */
-" shrl %%cl, %%edx\n"
-" addl %%eax, 64(%%esp)\n" /* len += hold & mask[op] */
-
-".L_decode_distance:\n"
-" cmpb $15, %%bl\n"
-" ja .L_get_distance_code\n" /* if (15 < bits) */
-
-" xorl %%eax, %%eax\n"
-" lodsw\n" /* al = *(ushort *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $16, %%bl\n" /* bits += 16 */
-" shll %%cl, %%eax\n"
-" orl %%eax, %%edx\n" /* hold |= *((ushort *)in)++ << bits */
-
-".L_get_distance_code:\n"
-" movl 60(%%esp), %%eax\n" /* eax = dmask */
-" movl 36(%%esp), %%ecx\n" /* ecx = dcode */
-" andl %%edx, %%eax\n" /* eax &= hold */
-" movl (%%ecx,%%eax,4), %%eax\n"/* eax = dcode[hold & dmask] */
-
-".L_dodist:\n"
-" movl %%eax, %%ebp\n" /* dist = this */
-" shrl $16, %%ebp\n" /* dist = this.val */
-" movb %%ah, %%cl\n"
-" subb %%ah, %%bl\n" /* bits -= this.bits */
-" shrl %%cl, %%edx\n" /* hold >>= this.bits */
-" movb %%al, %%cl\n" /* cl = this.op */
-
-" testb $16, %%al\n" /* if ((op & 16) == 0) */
-" jz .L_test_for_second_level_dist\n"
-" andb $15, %%cl\n" /* op &= 15 */
-" jz .L_check_dist_one\n"
-" cmpb %%cl, %%bl\n"
-" jae .L_add_bits_to_dist\n" /* if (op <= bits) 97.6% */
-
-" movb %%cl, %%ch\n" /* stash op in ch, freeing cl */
-" xorl %%eax, %%eax\n"
-" lodsw\n" /* al = *(ushort *)in++ */
-" movb %%bl, %%cl\n" /* cl = bits, needs it for shifting */
-" addb $16, %%bl\n" /* bits += 16 */
-" shll %%cl, %%eax\n"
-" orl %%eax, %%edx\n" /* hold |= *((ushort *)in)++ << bits */
-" movb %%ch, %%cl\n" /* move op back to ecx */
-
-".L_add_bits_to_dist:\n"
-" subb %%cl, %%bl\n"
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n" /* (1 << op) - 1 */
-" andl %%edx, %%eax\n" /* eax &= hold */
-" shrl %%cl, %%edx\n"
-" addl %%eax, %%ebp\n" /* dist += hold & ((1 << op) - 1) */
-
-".L_check_window:\n"
-" movl %%esi, 8(%%esp)\n" /* save in so from can use it's reg */
-" movl %%edi, %%eax\n"
-" subl 20(%%esp), %%eax\n" /* nbytes = out - beg */
-
-" cmpl %%ebp, %%eax\n"
-" jb .L_clip_window\n" /* if (dist > nbytes) 4.2% */
-
-" movl 64(%%esp), %%ecx\n" /* ecx = len */
-" movl %%edi, %%esi\n"
-" subl %%ebp, %%esi\n" /* from = out - dist */
-
-" sarl %%ecx\n"
-" jnc .L_copy_two\n" /* if len % 2 == 0 */
-
-" rep movsw\n"
-" movb (%%esi), %%al\n"
-" movb %%al, (%%edi)\n"
-" incl %%edi\n"
-
-" movl 8(%%esp), %%esi\n" /* move in back to %esi, toss from */
-" movl 32(%%esp), %%ebp\n" /* ebp = lcode */
-" jmp .L_while_test\n"
-
-".L_copy_two:\n"
-" rep movsw\n"
-" movl 8(%%esp), %%esi\n" /* move in back to %esi, toss from */
-" movl 32(%%esp), %%ebp\n" /* ebp = lcode */
-" jmp .L_while_test\n"
-
-".align 32,0x90\n"
-".L_check_dist_one:\n"
-" cmpl $1, %%ebp\n" /* if dist 1, is a memset */
-" jne .L_check_window\n"
-" cmpl %%edi, 20(%%esp)\n"
-" je .L_check_window\n" /* out == beg, if outside window */
-
-" movl 64(%%esp), %%ecx\n" /* ecx = len */
-" movb -1(%%edi), %%al\n"
-" movb %%al, %%ah\n"
-
-" sarl %%ecx\n"
-" jnc .L_set_two\n"
-" movb %%al, (%%edi)\n"
-" incl %%edi\n"
-
-".L_set_two:\n"
-" rep stosw\n"
-" movl 32(%%esp), %%ebp\n" /* ebp = lcode */
-" jmp .L_while_test\n"
-
-".align 32,0x90\n"
-".L_test_for_second_level_length:\n"
-" testb $64, %%al\n"
-" jnz .L_test_for_end_of_block\n" /* if ((op & 64) != 0) */
-
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n"
-" andl %%edx, %%eax\n" /* eax &= hold */
-" addl 64(%%esp), %%eax\n" /* eax += len */
-" movl (%%ebp,%%eax,4), %%eax\n" /* eax = lcode[val+(hold&mask[op])]*/
-" jmp .L_dolen\n"
-
-".align 32,0x90\n"
-".L_test_for_second_level_dist:\n"
-" testb $64, %%al\n"
-" jnz .L_invalid_distance_code\n" /* if ((op & 64) != 0) */
-
-" xorl %%eax, %%eax\n"
-" incl %%eax\n"
-" shll %%cl, %%eax\n"
-" decl %%eax\n"
-" andl %%edx, %%eax\n" /* eax &= hold */
-" addl %%ebp, %%eax\n" /* eax += dist */
-" movl 36(%%esp), %%ecx\n" /* ecx = dcode */
-" movl (%%ecx,%%eax,4), %%eax\n" /* eax = dcode[val+(hold&mask[op])]*/
-" jmp .L_dodist\n"
-
-".align 32,0x90\n"
-".L_clip_window:\n"
-" movl %%eax, %%ecx\n"
-" movl 48(%%esp), %%eax\n" /* eax = wsize */
-" negl %%ecx\n" /* nbytes = -nbytes */
-" movl 28(%%esp), %%esi\n" /* from = window */
-
-" cmpl %%ebp, %%eax\n"
-" jb .L_invalid_distance_too_far\n" /* if (dist > wsize) */
-
-" addl %%ebp, %%ecx\n" /* nbytes = dist - nbytes */
-" cmpl $0, 52(%%esp)\n"
-" jne .L_wrap_around_window\n" /* if (write != 0) */
-
-" subl %%ecx, %%eax\n"
-" addl %%eax, %%esi\n" /* from += wsize - nbytes */
-
-" movl 64(%%esp), %%eax\n" /* eax = len */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movl %%edi, %%esi\n"
-" subl %%ebp, %%esi\n" /* from = out - dist */
-" jmp .L_do_copy\n"
-
-".align 32,0x90\n"
-".L_wrap_around_window:\n"
-" movl 52(%%esp), %%eax\n" /* eax = write */
-" cmpl %%eax, %%ecx\n"
-" jbe .L_contiguous_in_window\n" /* if (write >= nbytes) */
-
-" addl 48(%%esp), %%esi\n" /* from += wsize */
-" addl %%eax, %%esi\n" /* from += write */
-" subl %%ecx, %%esi\n" /* from -= nbytes */
-" subl %%eax, %%ecx\n" /* nbytes -= write */
-
-" movl 64(%%esp), %%eax\n" /* eax = len */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movl 28(%%esp), %%esi\n" /* from = window */
-" movl 52(%%esp), %%ecx\n" /* nbytes = write */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movl %%edi, %%esi\n"
-" subl %%ebp, %%esi\n" /* from = out - dist */
-" jmp .L_do_copy\n"
-
-".align 32,0x90\n"
-".L_contiguous_in_window:\n"
-" addl %%eax, %%esi\n"
-" subl %%ecx, %%esi\n" /* from += write - nbytes */
-
-" movl 64(%%esp), %%eax\n" /* eax = len */
-" cmpl %%ecx, %%eax\n"
-" jbe .L_do_copy\n" /* if (nbytes >= len) */
-
-" subl %%ecx, %%eax\n" /* len -= nbytes */
-" rep movsb\n"
-" movl %%edi, %%esi\n"
-" subl %%ebp, %%esi\n" /* from = out - dist */
-" jmp .L_do_copy\n" /* if (nbytes >= len) */
-
-".align 32,0x90\n"
-".L_do_copy:\n"
-" movl %%eax, %%ecx\n"
-" rep movsb\n"
-
-" movl 8(%%esp), %%esi\n" /* move in back to %esi, toss from */
-" movl 32(%%esp), %%ebp\n" /* ebp = lcode */
-" jmp .L_while_test\n"
-
-".L_test_for_end_of_block:\n"
-" testb $32, %%al\n"
-" jz .L_invalid_literal_length_code\n"
-" movl $1, 72(%%esp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_invalid_literal_length_code:\n"
-" movl $2, 72(%%esp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_invalid_distance_code:\n"
-" movl $3, 72(%%esp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_invalid_distance_too_far:\n"
-" movl 8(%%esp), %%esi\n"
-" movl $4, 72(%%esp)\n"
-" jmp .L_break_loop_with_status\n"
-
-".L_break_loop:\n"
-" movl $0, 72(%%esp)\n"
-
-".L_break_loop_with_status:\n"
-/* put in, out, bits, and hold back into ar and pop esp */
-" movl %%esi, 8(%%esp)\n" /* save in */
-" movl %%edi, 16(%%esp)\n" /* save out */
-" movl %%ebx, 44(%%esp)\n" /* save bits */
-" movl %%edx, 40(%%esp)\n" /* save hold */
-" movl 4(%%esp), %%ebp\n" /* restore esp, ebp */
-" movl (%%esp), %%esp\n"
- :
- : "m" (ar)
- : "memory", "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"
- );
-#elif defined( _MSC_VER ) && ! defined( _M_AMD64 )
- __asm {
- lea eax, ar
- mov [eax], esp /* save esp, ebp */
- mov [eax+4], ebp
- mov esp, eax
- mov esi, [esp+8] /* esi = in */
- mov edi, [esp+16] /* edi = out */
- mov edx, [esp+40] /* edx = hold */
- mov ebx, [esp+44] /* ebx = bits */
- mov ebp, [esp+32] /* ebp = lcode */
-
- cld
- jmp L_do_loop
-
-ALIGN 4
-L_while_test:
- cmp [esp+24], edi
- jbe L_break_loop
- cmp [esp+12], esi
- jbe L_break_loop
-
-L_do_loop:
- cmp bl, 15
- ja L_get_length_code /* if (15 < bits) */
-
- xor eax, eax
- lodsw /* al = *(ushort *)in++ */
- mov cl, bl /* cl = bits, needs it for shifting */
- add bl, 16 /* bits += 16 */
- shl eax, cl
- or edx, eax /* hold |= *((ushort *)in)++ << bits */
-
-L_get_length_code:
- mov eax, [esp+56] /* eax = lmask */
- and eax, edx /* eax &= hold */
- mov eax, [ebp+eax*4] /* eax = lcode[hold & lmask] */
-
-L_dolen:
- mov cl, ah /* cl = this.bits */
- sub bl, ah /* bits -= this.bits */
- shr edx, cl /* hold >>= this.bits */
-
- test al, al
- jnz L_test_for_length_base /* if (op != 0) 45.7% */
-
- shr eax, 16 /* output this.val char */
- stosb
- jmp L_while_test
-
-ALIGN 4
-L_test_for_length_base:
- mov ecx, eax /* len = this */
- shr ecx, 16 /* len = this.val */
- mov [esp+64], ecx /* save len */
- mov cl, al
-
- test al, 16
- jz L_test_for_second_level_length /* if ((op & 16) == 0) 8% */
- and cl, 15 /* op &= 15 */
- jz L_decode_distance /* if (!op) */
- cmp bl, cl
- jae L_add_bits_to_len /* if (op <= bits) */
-
- mov ch, cl /* stash op in ch, freeing cl */
- xor eax, eax
- lodsw /* al = *(ushort *)in++ */
- mov cl, bl /* cl = bits, needs it for shifting */
- add bl, 16 /* bits += 16 */
- shl eax, cl
- or edx, eax /* hold |= *((ushort *)in)++ << bits */
- mov cl, ch /* move op back to ecx */
-
-L_add_bits_to_len:
- sub bl, cl
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax
- and eax, edx /* eax &= hold */
- shr edx, cl
- add [esp+64], eax /* len += hold & mask[op] */
-
-L_decode_distance:
- cmp bl, 15
- ja L_get_distance_code /* if (15 < bits) */
-
- xor eax, eax
- lodsw /* al = *(ushort *)in++ */
- mov cl, bl /* cl = bits, needs it for shifting */
- add bl, 16 /* bits += 16 */
- shl eax, cl
- or edx, eax /* hold |= *((ushort *)in)++ << bits */
-
-L_get_distance_code:
- mov eax, [esp+60] /* eax = dmask */
- mov ecx, [esp+36] /* ecx = dcode */
- and eax, edx /* eax &= hold */
- mov eax, [ecx+eax*4]/* eax = dcode[hold & dmask] */
-
-L_dodist:
- mov ebp, eax /* dist = this */
- shr ebp, 16 /* dist = this.val */
- mov cl, ah
- sub bl, ah /* bits -= this.bits */
- shr edx, cl /* hold >>= this.bits */
- mov cl, al /* cl = this.op */
-
- test al, 16 /* if ((op & 16) == 0) */
- jz L_test_for_second_level_dist
- and cl, 15 /* op &= 15 */
- jz L_check_dist_one
- cmp bl, cl
- jae L_add_bits_to_dist /* if (op <= bits) 97.6% */
-
- mov ch, cl /* stash op in ch, freeing cl */
- xor eax, eax
- lodsw /* al = *(ushort *)in++ */
- mov cl, bl /* cl = bits, needs it for shifting */
- add bl, 16 /* bits += 16 */
- shl eax, cl
- or edx, eax /* hold |= *((ushort *)in)++ << bits */
- mov cl, ch /* move op back to ecx */
-
-L_add_bits_to_dist:
- sub bl, cl
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax /* (1 << op) - 1 */
- and eax, edx /* eax &= hold */
- shr edx, cl
- add ebp, eax /* dist += hold & ((1 << op) - 1) */
-
-L_check_window:
- mov [esp+8], esi /* save in so from can use it's reg */
- mov eax, edi
- sub eax, [esp+20] /* nbytes = out - beg */
-
- cmp eax, ebp
- jb L_clip_window /* if (dist > nbytes) 4.2% */
-
- mov ecx, [esp+64] /* ecx = len */
- mov esi, edi
- sub esi, ebp /* from = out - dist */
-
- sar ecx, 1
- jnc L_copy_two
-
- rep movsw
- mov al, [esi]
- mov [edi], al
- inc edi
-
- mov esi, [esp+8] /* move in back to %esi, toss from */
- mov ebp, [esp+32] /* ebp = lcode */
- jmp L_while_test
-
-L_copy_two:
- rep movsw
- mov esi, [esp+8] /* move in back to %esi, toss from */
- mov ebp, [esp+32] /* ebp = lcode */
- jmp L_while_test
-
-ALIGN 4
-L_check_dist_one:
- cmp ebp, 1 /* if dist 1, is a memset */
- jne L_check_window
- cmp [esp+20], edi
- je L_check_window /* out == beg, if outside window */
-
- mov ecx, [esp+64] /* ecx = len */
- mov al, [edi-1]
- mov ah, al
-
- sar ecx, 1
- jnc L_set_two
- mov [edi], al /* memset out with from[-1] */
- inc edi
-
-L_set_two:
- rep stosw
- mov ebp, [esp+32] /* ebp = lcode */
- jmp L_while_test
-
-ALIGN 4
-L_test_for_second_level_length:
- test al, 64
- jnz L_test_for_end_of_block /* if ((op & 64) != 0) */
-
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax
- and eax, edx /* eax &= hold */
- add eax, [esp+64] /* eax += len */
- mov eax, [ebp+eax*4] /* eax = lcode[val+(hold&mask[op])]*/
- jmp L_dolen
-
-ALIGN 4
-L_test_for_second_level_dist:
- test al, 64
- jnz L_invalid_distance_code /* if ((op & 64) != 0) */
-
- xor eax, eax
- inc eax
- shl eax, cl
- dec eax
- and eax, edx /* eax &= hold */
- add eax, ebp /* eax += dist */
- mov ecx, [esp+36] /* ecx = dcode */
- mov eax, [ecx+eax*4] /* eax = dcode[val+(hold&mask[op])]*/
- jmp L_dodist
-
-ALIGN 4
-L_clip_window:
- mov ecx, eax
- mov eax, [esp+48] /* eax = wsize */
- neg ecx /* nbytes = -nbytes */
- mov esi, [esp+28] /* from = window */
-
- cmp eax, ebp
- jb L_invalid_distance_too_far /* if (dist > wsize) */
-
- add ecx, ebp /* nbytes = dist - nbytes */
- cmp dword ptr [esp+52], 0
- jne L_wrap_around_window /* if (write != 0) */
-
- sub eax, ecx
- add esi, eax /* from += wsize - nbytes */
-
- mov eax, [esp+64] /* eax = len */
- cmp eax, ecx
- jbe L_do_copy /* if (nbytes >= len) */
-
- sub eax, ecx /* len -= nbytes */
- rep movsb
- mov esi, edi
- sub esi, ebp /* from = out - dist */
- jmp L_do_copy
-
-ALIGN 4
-L_wrap_around_window:
- mov eax, [esp+52] /* eax = write */
- cmp ecx, eax
- jbe L_contiguous_in_window /* if (write >= nbytes) */
-
- add esi, [esp+48] /* from += wsize */
- add esi, eax /* from += write */
- sub esi, ecx /* from -= nbytes */
- sub ecx, eax /* nbytes -= write */
-
- mov eax, [esp+64] /* eax = len */
- cmp eax, ecx
- jbe L_do_copy /* if (nbytes >= len) */
-
- sub eax, ecx /* len -= nbytes */
- rep movsb
- mov esi, [esp+28] /* from = window */
- mov ecx, [esp+52] /* nbytes = write */
- cmp eax, ecx
- jbe L_do_copy /* if (nbytes >= len) */
-
- sub eax, ecx /* len -= nbytes */
- rep movsb
- mov esi, edi
- sub esi, ebp /* from = out - dist */
- jmp L_do_copy
-
-ALIGN 4
-L_contiguous_in_window:
- add esi, eax
- sub esi, ecx /* from += write - nbytes */
-
- mov eax, [esp+64] /* eax = len */
- cmp eax, ecx
- jbe L_do_copy /* if (nbytes >= len) */
-
- sub eax, ecx /* len -= nbytes */
- rep movsb
- mov esi, edi
- sub esi, ebp /* from = out - dist */
- jmp L_do_copy
-
-ALIGN 4
-L_do_copy:
- mov ecx, eax
- rep movsb
-
- mov esi, [esp+8] /* move in back to %esi, toss from */
- mov ebp, [esp+32] /* ebp = lcode */
- jmp L_while_test
-
-L_test_for_end_of_block:
- test al, 32
- jz L_invalid_literal_length_code
- mov dword ptr [esp+72], 1
- jmp L_break_loop_with_status
-
-L_invalid_literal_length_code:
- mov dword ptr [esp+72], 2
- jmp L_break_loop_with_status
-
-L_invalid_distance_code:
- mov dword ptr [esp+72], 3
- jmp L_break_loop_with_status
-
-L_invalid_distance_too_far:
- mov esi, [esp+4]
- mov dword ptr [esp+72], 4
- jmp L_break_loop_with_status
-
-L_break_loop:
- mov dword ptr [esp+72], 0
-
-L_break_loop_with_status:
-/* put in, out, bits, and hold back into ar and pop esp */
- mov [esp+8], esi /* save in */
- mov [esp+16], edi /* save out */
- mov [esp+44], ebx /* save bits */
- mov [esp+40], edx /* save hold */
- mov ebp, [esp+4] /* restore esp, ebp */
- mov esp, [esp]
- }
-#else
-#error "x86 architecture not defined"
-#endif
-
- if (ar.status > 1) {
- if (ar.status == 2)
- strm->msg = "invalid literal/length code";
- else if (ar.status == 3)
- strm->msg = "invalid distance code";
- else
- strm->msg = "invalid distance too far back";
- state->mode = BAD;
- }
- else if ( ar.status == 1 ) {
- state->mode = TYPE;
- }
-
- /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
- ar.len = ar.bits >> 3;
- ar.in -= ar.len;
- ar.bits -= ar.len << 3;
- ar.hold &= (1U << ar.bits) - 1;
-
- /* update state and return */
- strm->next_in = ar.in;
- strm->next_out = ar.out;
- strm->avail_in = (unsigned)(ar.in < ar.last ?
- PAD_AVAIL_IN + (ar.last - ar.in) :
- PAD_AVAIL_IN - (ar.in - ar.last));
- strm->avail_out = (unsigned)(ar.out < ar.end ?
- PAD_AVAIL_OUT + (ar.end - ar.out) :
- PAD_AVAIL_OUT - (ar.out - ar.end));
- state->hold = ar.hold;
- state->bits = ar.bits;
- return;
-}
-
+++ /dev/null
-/*
- * inffast.S is a hand tuned assembler version of:
- *
- * inffast.c -- fast decoding
- * Copyright (C) 1995-2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Copyright (C) 2003 Chris Anderson <christop@charm.net>
- * Please use the copyright conditions above.
- *
- * This version (Jan-23-2003) of inflate_fast was coded and tested under
- * GNU/Linux on a pentium 3, using the gcc-3.2 compiler distribution. On that
- * machine, I found that gzip style archives decompressed about 20% faster than
- * the gcc-3.2 -O3 -fomit-frame-pointer compiled version. Your results will
- * depend on how large of a buffer is used for z_stream.next_in & next_out
- * (8K-32K worked best for my 256K cpu cache) and how much overhead there is in
- * stream processing I/O and crc32/addler32. In my case, this routine used
- * 70% of the cpu time and crc32 used 20%.
- *
- * I am confident that this version will work in the general case, but I have
- * not tested a wide variety of datasets or a wide variety of platforms.
- *
- * Jan-24-2003 -- Added -DUSE_MMX define for slightly faster inflating.
- * It should be a runtime flag instead of compile time flag...
- *
- * Jan-26-2003 -- Added runtime check for MMX support with cpuid instruction.
- * With -DUSE_MMX, only MMX code is compiled. With -DNO_MMX, only non-MMX code
- * is compiled. Without either option, runtime detection is enabled. Runtime
- * detection should work on all modern cpus and the recomended algorithm (flip
- * ID bit on eflags and then use the cpuid instruction) is used in many
- * multimedia applications. Tested under win2k with gcc-2.95 and gas-2.12
- * distributed with cygwin3. Compiling with gcc-2.95 -c inffast.S -o
- * inffast.obj generates a COFF object which can then be linked with MSVC++
- * compiled code. Tested under FreeBSD 4.7 with gcc-2.95.
- *
- * Jan-28-2003 -- Tested Athlon XP... MMX mode is slower than no MMX (and
- * slower than compiler generated code). Adjusted cpuid check to use the MMX
- * code only for Pentiums < P4 until I have more data on the P4. Speed
- * improvment is only about 15% on the Athlon when compared with code generated
- * with MSVC++. Not sure yet, but I think the P4 will also be slower using the
- * MMX mode because many of it's x86 ALU instructions execute in .5 cycles and
- * have less latency than MMX ops. Added code to buffer the last 11 bytes of
- * the input stream since the MMX code grabs bits in chunks of 32, which
- * differs from the inffast.c algorithm. I don't think there would have been
- * read overruns where a page boundary was crossed (a segfault), but there
- * could have been overruns when next_in ends on unaligned memory (unintialized
- * memory read).
- *
- * Mar-13-2003 -- P4 MMX is slightly slower than P4 NO_MMX. I created a C
- * version of the non-MMX code so that it doesn't depend on zstrm and zstate
- * structure offsets which are hard coded in this file. This was last tested
- * with zlib-1.2.0 which is currently in beta testing, newer versions of this
- * and inffas86.c can be found at http://www.eetbeetee.com/zlib/ and
- * http://www.charm.net/~christop/zlib/
- */
-
-
-/*
- * if you have underscore linking problems (_inflate_fast undefined), try
- * using -DGAS_COFF
- */
-#if ! defined( GAS_COFF ) && ! defined( GAS_ELF )
-
-#if defined( WIN32 ) || defined( __CYGWIN__ )
-#define GAS_COFF /* windows object format */
-#else
-#define GAS_ELF
-#endif
-
-#endif /* ! GAS_COFF && ! GAS_ELF */
-
-
-#if defined( GAS_COFF )
-
-/* coff externals have underscores */
-#define inflate_fast _inflate_fast
-#define inflate_fast_use_mmx _inflate_fast_use_mmx
-
-#endif /* GAS_COFF */
-
-
-.file "inffast.S"
-
-.globl inflate_fast
-
-.text
-.align 4,0
-.L_invalid_literal_length_code_msg:
-.string "invalid literal/length code"
-
-.align 4,0
-.L_invalid_distance_code_msg:
-.string "invalid distance code"
-
-.align 4,0
-.L_invalid_distance_too_far_msg:
-.string "invalid distance too far back"
-
-#if ! defined( NO_MMX )
-.align 4,0
-.L_mask: /* mask[N] = ( 1 << N ) - 1 */
-.long 0
-.long 1
-.long 3
-.long 7
-.long 15
-.long 31
-.long 63
-.long 127
-.long 255
-.long 511
-.long 1023
-.long 2047
-.long 4095
-.long 8191
-.long 16383
-.long 32767
-.long 65535
-.long 131071
-.long 262143
-.long 524287
-.long 1048575
-.long 2097151
-.long 4194303
-.long 8388607
-.long 16777215
-.long 33554431
-.long 67108863
-.long 134217727
-.long 268435455
-.long 536870911
-.long 1073741823
-.long 2147483647
-.long 4294967295
-#endif /* NO_MMX */
-
-.text
-
-/*
- * struct z_stream offsets, in zlib.h
- */
-#define next_in_strm 0 /* strm->next_in */
-#define avail_in_strm 4 /* strm->avail_in */
-#define next_out_strm 12 /* strm->next_out */
-#define avail_out_strm 16 /* strm->avail_out */
-#define msg_strm 24 /* strm->msg */
-#define state_strm 28 /* strm->state */
-
-/*
- * struct inflate_state offsets, in inflate.h
- */
-#define mode_state 0 /* state->mode */
-#define wsize_state 32 /* state->wsize */
-#define write_state 40 /* state->write */
-#define window_state 44 /* state->window */
-#define hold_state 48 /* state->hold */
-#define bits_state 52 /* state->bits */
-#define lencode_state 68 /* state->lencode */
-#define distcode_state 72 /* state->distcode */
-#define lenbits_state 76 /* state->lenbits */
-#define distbits_state 80 /* state->distbits */
-
-/*
- * inflate_fast's activation record
- */
-#define local_var_size 64 /* how much local space for vars */
-#define strm_sp 88 /* first arg: z_stream * (local_var_size + 24) */
-#define start_sp 92 /* second arg: unsigned int (local_var_size + 28) */
-
-/*
- * offsets for local vars on stack
- */
-#define out 60 /* unsigned char* */
-#define window 56 /* unsigned char* */
-#define wsize 52 /* unsigned int */
-#define write 48 /* unsigned int */
-#define in 44 /* unsigned char* */
-#define beg 40 /* unsigned char* */
-#define buf 28 /* char[ 12 ] */
-#define len 24 /* unsigned int */
-#define last 20 /* unsigned char* */
-#define end 16 /* unsigned char* */
-#define dcode 12 /* code* */
-#define lcode 8 /* code* */
-#define dmask 4 /* unsigned int */
-#define lmask 0 /* unsigned int */
-
-/*
- * typedef enum inflate_mode consts, in inflate.h
- */
-#define INFLATE_MODE_TYPE 11 /* state->mode flags enum-ed in inflate.h */
-#define INFLATE_MODE_BAD 26
-
-
-#if ! defined( USE_MMX ) && ! defined( NO_MMX )
-
-#define RUN_TIME_MMX
-
-#define CHECK_MMX 1
-#define DO_USE_MMX 2
-#define DONT_USE_MMX 3
-
-.globl inflate_fast_use_mmx
-
-.data
-
-.align 4,0
-inflate_fast_use_mmx: /* integer flag for run time control 1=check,2=mmx,3=no */
-.long CHECK_MMX
-
-#if defined( GAS_ELF )
-/* elf info */
-.type inflate_fast_use_mmx,@object
-.size inflate_fast_use_mmx,4
-#endif
-
-#endif /* RUN_TIME_MMX */
-
-#if defined( GAS_COFF )
-/* coff info: scl 2 = extern, type 32 = function */
-.def inflate_fast; .scl 2; .type 32; .endef
-#endif
-
-.text
-
-.align 32,0x90
-inflate_fast:
- pushl %edi
- pushl %esi
- pushl %ebp
- pushl %ebx
- pushf /* save eflags (strm_sp, state_sp assumes this is 32 bits) */
- subl $local_var_size, %esp
- cld
-
-#define strm_r %esi
-#define state_r %edi
-
- movl strm_sp(%esp), strm_r
- movl state_strm(strm_r), state_r
-
- /* in = strm->next_in;
- * out = strm->next_out;
- * last = in + strm->avail_in - 11;
- * beg = out - (start - strm->avail_out);
- * end = out + (strm->avail_out - 257);
- */
- movl avail_in_strm(strm_r), %edx
- movl next_in_strm(strm_r), %eax
-
- addl %eax, %edx /* avail_in += next_in */
- subl $11, %edx /* avail_in -= 11 */
-
- movl %eax, in(%esp)
- movl %edx, last(%esp)
-
- movl start_sp(%esp), %ebp
- movl avail_out_strm(strm_r), %ecx
- movl next_out_strm(strm_r), %ebx
-
- subl %ecx, %ebp /* start -= avail_out */
- negl %ebp /* start = -start */
- addl %ebx, %ebp /* start += next_out */
-
- subl $257, %ecx /* avail_out -= 257 */
- addl %ebx, %ecx /* avail_out += out */
-
- movl %ebx, out(%esp)
- movl %ebp, beg(%esp)
- movl %ecx, end(%esp)
-
- /* wsize = state->wsize;
- * write = state->write;
- * window = state->window;
- * hold = state->hold;
- * bits = state->bits;
- * lcode = state->lencode;
- * dcode = state->distcode;
- * lmask = ( 1 << state->lenbits ) - 1;
- * dmask = ( 1 << state->distbits ) - 1;
- */
-
- movl lencode_state(state_r), %eax
- movl distcode_state(state_r), %ecx
-
- movl %eax, lcode(%esp)
- movl %ecx, dcode(%esp)
-
- movl $1, %eax
- movl lenbits_state(state_r), %ecx
- shll %cl, %eax
- decl %eax
- movl %eax, lmask(%esp)
-
- movl $1, %eax
- movl distbits_state(state_r), %ecx
- shll %cl, %eax
- decl %eax
- movl %eax, dmask(%esp)
-
- movl wsize_state(state_r), %eax
- movl write_state(state_r), %ecx
- movl window_state(state_r), %edx
-
- movl %eax, wsize(%esp)
- movl %ecx, write(%esp)
- movl %edx, window(%esp)
-
- movl hold_state(state_r), %ebp
- movl bits_state(state_r), %ebx
-
-#undef strm_r
-#undef state_r
-
-#define in_r %esi
-#define from_r %esi
-#define out_r %edi
-
- movl in(%esp), in_r
- movl last(%esp), %ecx
- cmpl in_r, %ecx
- ja .L_align_long /* if in < last */
-
- addl $11, %ecx /* ecx = &in[ avail_in ] */
- subl in_r, %ecx /* ecx = avail_in */
- movl $12, %eax
- subl %ecx, %eax /* eax = 12 - avail_in */
- leal buf(%esp), %edi
- rep movsb /* memcpy( buf, in, avail_in ) */
- movl %eax, %ecx
- xorl %eax, %eax
- rep stosb /* memset( &buf[ avail_in ], 0, 12 - avail_in ) */
- leal buf(%esp), in_r /* in = buf */
- movl in_r, last(%esp) /* last = in, do just one iteration */
- jmp .L_is_aligned
-
- /* align in_r on long boundary */
-.L_align_long:
- testl $3, in_r
- jz .L_is_aligned
- xorl %eax, %eax
- movb (in_r), %al
- incl in_r
- movl %ebx, %ecx
- addl $8, %ebx
- shll %cl, %eax
- orl %eax, %ebp
- jmp .L_align_long
-
-.L_is_aligned:
- movl out(%esp), out_r
-
-#if defined( NO_MMX )
- jmp .L_do_loop
-#endif
-
-#if defined( USE_MMX )
- jmp .L_init_mmx
-#endif
-
-/*** Runtime MMX check ***/
-
-#if defined( RUN_TIME_MMX )
-.L_check_mmx:
- cmpl $DO_USE_MMX, inflate_fast_use_mmx
- je .L_init_mmx
- ja .L_do_loop /* > 2 */
-
- pushl %eax
- pushl %ebx
- pushl %ecx
- pushl %edx
- pushf
- movl (%esp), %eax /* copy eflags to eax */
- xorl $0x200000, (%esp) /* try toggling ID bit of eflags (bit 21)
- * to see if cpu supports cpuid...
- * ID bit method not supported by NexGen but
- * bios may load a cpuid instruction and
- * cpuid may be disabled on Cyrix 5-6x86 */
- popf
- pushf
- popl %edx /* copy new eflags to edx */
- xorl %eax, %edx /* test if ID bit is flipped */
- jz .L_dont_use_mmx /* not flipped if zero */
- xorl %eax, %eax
- cpuid
- cmpl $0x756e6547, %ebx /* check for GenuineIntel in ebx,ecx,edx */
- jne .L_dont_use_mmx
- cmpl $0x6c65746e, %ecx
- jne .L_dont_use_mmx
- cmpl $0x49656e69, %edx
- jne .L_dont_use_mmx
- movl $1, %eax
- cpuid /* get cpu features */
- shrl $8, %eax
- andl $15, %eax
- cmpl $6, %eax /* check for Pentium family, is 0xf for P4 */
- jne .L_dont_use_mmx
- testl $0x800000, %edx /* test if MMX feature is set (bit 23) */
- jnz .L_use_mmx
- jmp .L_dont_use_mmx
-.L_use_mmx:
- movl $DO_USE_MMX, inflate_fast_use_mmx
- jmp .L_check_mmx_pop
-.L_dont_use_mmx:
- movl $DONT_USE_MMX, inflate_fast_use_mmx
-.L_check_mmx_pop:
- popl %edx
- popl %ecx
- popl %ebx
- popl %eax
- jmp .L_check_mmx
-#endif
-
-
-/*** Non-MMX code ***/
-
-#if defined ( NO_MMX ) || defined( RUN_TIME_MMX )
-
-#define hold_r %ebp
-#define bits_r %bl
-#define bitslong_r %ebx
-
-.align 32,0x90
-.L_while_test:
- /* while (in < last && out < end)
- */
- cmpl out_r, end(%esp)
- jbe .L_break_loop /* if (out >= end) */
-
- cmpl in_r, last(%esp)
- jbe .L_break_loop
-
-.L_do_loop:
- /* regs: %esi = in, %ebp = hold, %bl = bits, %edi = out
- *
- * do {
- * if (bits < 15) {
- * hold |= *((unsigned short *)in)++ << bits;
- * bits += 16
- * }
- * this = lcode[hold & lmask]
- */
- cmpb $15, bits_r
- ja .L_get_length_code /* if (15 < bits) */
-
- xorl %eax, %eax
- lodsw /* al = *(ushort *)in++ */
- movb bits_r, %cl /* cl = bits, needs it for shifting */
- addb $16, bits_r /* bits += 16 */
- shll %cl, %eax
- orl %eax, hold_r /* hold |= *((ushort *)in)++ << bits */
-
-.L_get_length_code:
- movl lmask(%esp), %edx /* edx = lmask */
- movl lcode(%esp), %ecx /* ecx = lcode */
- andl hold_r, %edx /* edx &= hold */
- movl (%ecx,%edx,4), %eax /* eax = lcode[hold & lmask] */
-
-.L_dolen:
- /* regs: %esi = in, %ebp = hold, %bl = bits, %edi = out
- *
- * dolen:
- * bits -= this.bits;
- * hold >>= this.bits
- */
- movb %ah, %cl /* cl = this.bits */
- subb %ah, bits_r /* bits -= this.bits */
- shrl %cl, hold_r /* hold >>= this.bits */
-
- /* check if op is a literal
- * if (op == 0) {
- * PUP(out) = this.val;
- * }
- */
- testb %al, %al
- jnz .L_test_for_length_base /* if (op != 0) 45.7% */
-
- shrl $16, %eax /* output this.val char */
- stosb
- jmp .L_while_test
-
-.L_test_for_length_base:
- /* regs: %esi = in, %ebp = hold, %bl = bits, %edi = out, %edx = len
- *
- * else if (op & 16) {
- * len = this.val
- * op &= 15
- * if (op) {
- * if (op > bits) {
- * hold |= *((unsigned short *)in)++ << bits;
- * bits += 16
- * }
- * len += hold & mask[op];
- * bits -= op;
- * hold >>= op;
- * }
- */
-#define len_r %edx
- movl %eax, len_r /* len = this */
- shrl $16, len_r /* len = this.val */
- movb %al, %cl
-
- testb $16, %al
- jz .L_test_for_second_level_length /* if ((op & 16) == 0) 8% */
- andb $15, %cl /* op &= 15 */
- jz .L_save_len /* if (!op) */
- cmpb %cl, bits_r
- jae .L_add_bits_to_len /* if (op <= bits) */
-
- movb %cl, %ch /* stash op in ch, freeing cl */
- xorl %eax, %eax
- lodsw /* al = *(ushort *)in++ */
- movb bits_r, %cl /* cl = bits, needs it for shifting */
- addb $16, bits_r /* bits += 16 */
- shll %cl, %eax
- orl %eax, hold_r /* hold |= *((ushort *)in)++ << bits */
- movb %ch, %cl /* move op back to ecx */
-
-.L_add_bits_to_len:
- movl $1, %eax
- shll %cl, %eax
- decl %eax
- subb %cl, bits_r
- andl hold_r, %eax /* eax &= hold */
- shrl %cl, hold_r
- addl %eax, len_r /* len += hold & mask[op] */
-
-.L_save_len:
- movl len_r, len(%esp) /* save len */
-#undef len_r
-
-.L_decode_distance:
- /* regs: %esi = in, %ebp = hold, %bl = bits, %edi = out, %edx = dist
- *
- * if (bits < 15) {
- * hold |= *((unsigned short *)in)++ << bits;
- * bits += 16
- * }
- * this = dcode[hold & dmask];
- * dodist:
- * bits -= this.bits;
- * hold >>= this.bits;
- * op = this.op;
- */
-
- cmpb $15, bits_r
- ja .L_get_distance_code /* if (15 < bits) */
-
- xorl %eax, %eax
- lodsw /* al = *(ushort *)in++ */
- movb bits_r, %cl /* cl = bits, needs it for shifting */
- addb $16, bits_r /* bits += 16 */
- shll %cl, %eax
- orl %eax, hold_r /* hold |= *((ushort *)in)++ << bits */
-
-.L_get_distance_code:
- movl dmask(%esp), %edx /* edx = dmask */
- movl dcode(%esp), %ecx /* ecx = dcode */
- andl hold_r, %edx /* edx &= hold */
- movl (%ecx,%edx,4), %eax /* eax = dcode[hold & dmask] */
-
-#define dist_r %edx
-.L_dodist:
- movl %eax, dist_r /* dist = this */
- shrl $16, dist_r /* dist = this.val */
- movb %ah, %cl
- subb %ah, bits_r /* bits -= this.bits */
- shrl %cl, hold_r /* hold >>= this.bits */
-
- /* if (op & 16) {
- * dist = this.val
- * op &= 15
- * if (op > bits) {
- * hold |= *((unsigned short *)in)++ << bits;
- * bits += 16
- * }
- * dist += hold & mask[op];
- * bits -= op;
- * hold >>= op;
- */
- movb %al, %cl /* cl = this.op */
-
- testb $16, %al /* if ((op & 16) == 0) */
- jz .L_test_for_second_level_dist
- andb $15, %cl /* op &= 15 */
- jz .L_check_dist_one
- cmpb %cl, bits_r
- jae .L_add_bits_to_dist /* if (op <= bits) 97.6% */
-
- movb %cl, %ch /* stash op in ch, freeing cl */
- xorl %eax, %eax
- lodsw /* al = *(ushort *)in++ */
- movb bits_r, %cl /* cl = bits, needs it for shifting */
- addb $16, bits_r /* bits += 16 */
- shll %cl, %eax
- orl %eax, hold_r /* hold |= *((ushort *)in)++ << bits */
- movb %ch, %cl /* move op back to ecx */
-
-.L_add_bits_to_dist:
- movl $1, %eax
- shll %cl, %eax
- decl %eax /* (1 << op) - 1 */
- subb %cl, bits_r
- andl hold_r, %eax /* eax &= hold */
- shrl %cl, hold_r
- addl %eax, dist_r /* dist += hold & ((1 << op) - 1) */
- jmp .L_check_window
-
-.L_check_window:
- /* regs: %esi = from, %ebp = hold, %bl = bits, %edi = out, %edx = dist
- * %ecx = nbytes
- *
- * nbytes = out - beg;
- * if (dist <= nbytes) {
- * from = out - dist;
- * do {
- * PUP(out) = PUP(from);
- * } while (--len > 0) {
- * }
- */
-
- movl in_r, in(%esp) /* save in so from can use it's reg */
- movl out_r, %eax
- subl beg(%esp), %eax /* nbytes = out - beg */
-
- cmpl dist_r, %eax
- jb .L_clip_window /* if (dist > nbytes) 4.2% */
-
- movl len(%esp), %ecx
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
-
- subl $3, %ecx
- movb (from_r), %al
- movb %al, (out_r)
- movb 1(from_r), %al
- movb 2(from_r), %dl
- addl $3, from_r
- movb %al, 1(out_r)
- movb %dl, 2(out_r)
- addl $3, out_r
- rep movsb
-
- movl in(%esp), in_r /* move in back to %esi, toss from */
- jmp .L_while_test
-
-.align 16,0x90
-.L_check_dist_one:
- cmpl $1, dist_r
- jne .L_check_window
- cmpl out_r, beg(%esp)
- je .L_check_window
-
- decl out_r
- movl len(%esp), %ecx
- movb (out_r), %al
- subl $3, %ecx
-
- movb %al, 1(out_r)
- movb %al, 2(out_r)
- movb %al, 3(out_r)
- addl $4, out_r
- rep stosb
-
- jmp .L_while_test
-
-.align 16,0x90
-.L_test_for_second_level_length:
- /* else if ((op & 64) == 0) {
- * this = lcode[this.val + (hold & mask[op])];
- * }
- */
- testb $64, %al
- jnz .L_test_for_end_of_block /* if ((op & 64) != 0) */
-
- movl $1, %eax
- shll %cl, %eax
- decl %eax
- andl hold_r, %eax /* eax &= hold */
- addl %edx, %eax /* eax += this.val */
- movl lcode(%esp), %edx /* edx = lcode */
- movl (%edx,%eax,4), %eax /* eax = lcode[val + (hold&mask[op])] */
- jmp .L_dolen
-
-.align 16,0x90
-.L_test_for_second_level_dist:
- /* else if ((op & 64) == 0) {
- * this = dcode[this.val + (hold & mask[op])];
- * }
- */
- testb $64, %al
- jnz .L_invalid_distance_code /* if ((op & 64) != 0) */
-
- movl $1, %eax
- shll %cl, %eax
- decl %eax
- andl hold_r, %eax /* eax &= hold */
- addl %edx, %eax /* eax += this.val */
- movl dcode(%esp), %edx /* edx = dcode */
- movl (%edx,%eax,4), %eax /* eax = dcode[val + (hold&mask[op])] */
- jmp .L_dodist
-
-.align 16,0x90
-.L_clip_window:
- /* regs: %esi = from, %ebp = hold, %bl = bits, %edi = out, %edx = dist
- * %ecx = nbytes
- *
- * else {
- * if (dist > wsize) {
- * invalid distance
- * }
- * from = window;
- * nbytes = dist - nbytes;
- * if (write == 0) {
- * from += wsize - nbytes;
- */
-#define nbytes_r %ecx
- movl %eax, nbytes_r
- movl wsize(%esp), %eax /* prepare for dist compare */
- negl nbytes_r /* nbytes = -nbytes */
- movl window(%esp), from_r /* from = window */
-
- cmpl dist_r, %eax
- jb .L_invalid_distance_too_far /* if (dist > wsize) */
-
- addl dist_r, nbytes_r /* nbytes = dist - nbytes */
- cmpl $0, write(%esp)
- jne .L_wrap_around_window /* if (write != 0) */
-
- subl nbytes_r, %eax
- addl %eax, from_r /* from += wsize - nbytes */
-
- /* regs: %esi = from, %ebp = hold, %bl = bits, %edi = out, %edx = dist
- * %ecx = nbytes, %eax = len
- *
- * if (nbytes < len) {
- * len -= nbytes;
- * do {
- * PUP(out) = PUP(from);
- * } while (--nbytes);
- * from = out - dist;
- * }
- * }
- */
-#define len_r %eax
- movl len(%esp), len_r
- cmpl nbytes_r, len_r
- jbe .L_do_copy1 /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
- jmp .L_do_copy1
-
- cmpl nbytes_r, len_r
- jbe .L_do_copy1 /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
- jmp .L_do_copy1
-
-.L_wrap_around_window:
- /* regs: %esi = from, %ebp = hold, %bl = bits, %edi = out, %edx = dist
- * %ecx = nbytes, %eax = write, %eax = len
- *
- * else if (write < nbytes) {
- * from += wsize + write - nbytes;
- * nbytes -= write;
- * if (nbytes < len) {
- * len -= nbytes;
- * do {
- * PUP(out) = PUP(from);
- * } while (--nbytes);
- * from = window;
- * nbytes = write;
- * if (nbytes < len) {
- * len -= nbytes;
- * do {
- * PUP(out) = PUP(from);
- * } while(--nbytes);
- * from = out - dist;
- * }
- * }
- * }
- */
-#define write_r %eax
- movl write(%esp), write_r
- cmpl write_r, nbytes_r
- jbe .L_contiguous_in_window /* if (write >= nbytes) */
-
- addl wsize(%esp), from_r
- addl write_r, from_r
- subl nbytes_r, from_r /* from += wsize + write - nbytes */
- subl write_r, nbytes_r /* nbytes -= write */
-#undef write_r
-
- movl len(%esp), len_r
- cmpl nbytes_r, len_r
- jbe .L_do_copy1 /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl window(%esp), from_r /* from = window */
- movl write(%esp), nbytes_r /* nbytes = write */
- cmpl nbytes_r, len_r
- jbe .L_do_copy1 /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
- jmp .L_do_copy1
-
-.L_contiguous_in_window:
- /* regs: %esi = from, %ebp = hold, %bl = bits, %edi = out, %edx = dist
- * %ecx = nbytes, %eax = write, %eax = len
- *
- * else {
- * from += write - nbytes;
- * if (nbytes < len) {
- * len -= nbytes;
- * do {
- * PUP(out) = PUP(from);
- * } while (--nbytes);
- * from = out - dist;
- * }
- * }
- */
-#define write_r %eax
- addl write_r, from_r
- subl nbytes_r, from_r /* from += write - nbytes */
-#undef write_r
-
- movl len(%esp), len_r
- cmpl nbytes_r, len_r
- jbe .L_do_copy1 /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
-
-.L_do_copy1:
- /* regs: %esi = from, %esi = in, %ebp = hold, %bl = bits, %edi = out
- * %eax = len
- *
- * while (len > 0) {
- * PUP(out) = PUP(from);
- * len--;
- * }
- * }
- * } while (in < last && out < end);
- */
-#undef nbytes_r
-#define in_r %esi
- movl len_r, %ecx
- rep movsb
-
- movl in(%esp), in_r /* move in back to %esi, toss from */
- jmp .L_while_test
-
-#undef len_r
-#undef dist_r
-
-#endif /* NO_MMX || RUN_TIME_MMX */
-
-
-/*** MMX code ***/
-
-#if defined( USE_MMX ) || defined( RUN_TIME_MMX )
-
-.align 32,0x90
-.L_init_mmx:
- emms
-
-#undef bits_r
-#undef bitslong_r
-#define bitslong_r %ebp
-#define hold_mm %mm0
- movd %ebp, hold_mm
- movl %ebx, bitslong_r
-
-#define used_mm %mm1
-#define dmask2_mm %mm2
-#define lmask2_mm %mm3
-#define lmask_mm %mm4
-#define dmask_mm %mm5
-#define tmp_mm %mm6
-
- movd lmask(%esp), lmask_mm
- movq lmask_mm, lmask2_mm
- movd dmask(%esp), dmask_mm
- movq dmask_mm, dmask2_mm
- pxor used_mm, used_mm
- movl lcode(%esp), %ebx /* ebx = lcode */
- jmp .L_do_loop_mmx
-
-.align 32,0x90
-.L_while_test_mmx:
- /* while (in < last && out < end)
- */
- cmpl out_r, end(%esp)
- jbe .L_break_loop /* if (out >= end) */
-
- cmpl in_r, last(%esp)
- jbe .L_break_loop
-
-.L_do_loop_mmx:
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
-
- cmpl $32, bitslong_r
- ja .L_get_length_code_mmx /* if (32 < bits) */
-
- movd bitslong_r, tmp_mm
- movd (in_r), %mm7
- addl $4, in_r
- psllq tmp_mm, %mm7
- addl $32, bitslong_r
- por %mm7, hold_mm /* hold_mm |= *((uint *)in)++ << bits */
-
-.L_get_length_code_mmx:
- pand hold_mm, lmask_mm
- movd lmask_mm, %eax
- movq lmask2_mm, lmask_mm
- movl (%ebx,%eax,4), %eax /* eax = lcode[hold & lmask] */
-
-.L_dolen_mmx:
- movzbl %ah, %ecx /* ecx = this.bits */
- movd %ecx, used_mm
- subl %ecx, bitslong_r /* bits -= this.bits */
-
- testb %al, %al
- jnz .L_test_for_length_base_mmx /* if (op != 0) 45.7% */
-
- shrl $16, %eax /* output this.val char */
- stosb
- jmp .L_while_test_mmx
-
-.L_test_for_length_base_mmx:
-#define len_r %edx
- movl %eax, len_r /* len = this */
- shrl $16, len_r /* len = this.val */
-
- testb $16, %al
- jz .L_test_for_second_level_length_mmx /* if ((op & 16) == 0) 8% */
- andl $15, %eax /* op &= 15 */
- jz .L_decode_distance_mmx /* if (!op) */
-
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
- movd %eax, used_mm
- movd hold_mm, %ecx
- subl %eax, bitslong_r
- andl .L_mask(,%eax,4), %ecx
- addl %ecx, len_r /* len += hold & mask[op] */
-
-.L_decode_distance_mmx:
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
-
- cmpl $32, bitslong_r
- ja .L_get_dist_code_mmx /* if (32 < bits) */
-
- movd bitslong_r, tmp_mm
- movd (in_r), %mm7
- addl $4, in_r
- psllq tmp_mm, %mm7
- addl $32, bitslong_r
- por %mm7, hold_mm /* hold_mm |= *((uint *)in)++ << bits */
-
-.L_get_dist_code_mmx:
- movl dcode(%esp), %ebx /* ebx = dcode */
- pand hold_mm, dmask_mm
- movd dmask_mm, %eax
- movq dmask2_mm, dmask_mm
- movl (%ebx,%eax,4), %eax /* eax = dcode[hold & lmask] */
-
-.L_dodist_mmx:
-#define dist_r %ebx
- movzbl %ah, %ecx /* ecx = this.bits */
- movl %eax, dist_r
- shrl $16, dist_r /* dist = this.val */
- subl %ecx, bitslong_r /* bits -= this.bits */
- movd %ecx, used_mm
-
- testb $16, %al /* if ((op & 16) == 0) */
- jz .L_test_for_second_level_dist_mmx
- andl $15, %eax /* op &= 15 */
- jz .L_check_dist_one_mmx
-
-.L_add_bits_to_dist_mmx:
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
- movd %eax, used_mm /* save bit length of current op */
- movd hold_mm, %ecx /* get the next bits on input stream */
- subl %eax, bitslong_r /* bits -= op bits */
- andl .L_mask(,%eax,4), %ecx /* ecx = hold & mask[op] */
- addl %ecx, dist_r /* dist += hold & mask[op] */
-
-.L_check_window_mmx:
- movl in_r, in(%esp) /* save in so from can use it's reg */
- movl out_r, %eax
- subl beg(%esp), %eax /* nbytes = out - beg */
-
- cmpl dist_r, %eax
- jb .L_clip_window_mmx /* if (dist > nbytes) 4.2% */
-
- movl len_r, %ecx
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
-
- subl $3, %ecx
- movb (from_r), %al
- movb %al, (out_r)
- movb 1(from_r), %al
- movb 2(from_r), %dl
- addl $3, from_r
- movb %al, 1(out_r)
- movb %dl, 2(out_r)
- addl $3, out_r
- rep movsb
-
- movl in(%esp), in_r /* move in back to %esi, toss from */
- movl lcode(%esp), %ebx /* move lcode back to %ebx, toss dist */
- jmp .L_while_test_mmx
-
-.align 16,0x90
-.L_check_dist_one_mmx:
- cmpl $1, dist_r
- jne .L_check_window_mmx
- cmpl out_r, beg(%esp)
- je .L_check_window_mmx
-
- decl out_r
- movl len_r, %ecx
- movb (out_r), %al
- subl $3, %ecx
-
- movb %al, 1(out_r)
- movb %al, 2(out_r)
- movb %al, 3(out_r)
- addl $4, out_r
- rep stosb
-
- movl lcode(%esp), %ebx /* move lcode back to %ebx, toss dist */
- jmp .L_while_test_mmx
-
-.align 16,0x90
-.L_test_for_second_level_length_mmx:
- testb $64, %al
- jnz .L_test_for_end_of_block /* if ((op & 64) != 0) */
-
- andl $15, %eax
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
- movd hold_mm, %ecx
- andl .L_mask(,%eax,4), %ecx
- addl len_r, %ecx
- movl (%ebx,%ecx,4), %eax /* eax = lcode[hold & lmask] */
- jmp .L_dolen_mmx
-
-.align 16,0x90
-.L_test_for_second_level_dist_mmx:
- testb $64, %al
- jnz .L_invalid_distance_code /* if ((op & 64) != 0) */
-
- andl $15, %eax
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
- movd hold_mm, %ecx
- andl .L_mask(,%eax,4), %ecx
- movl dcode(%esp), %eax /* ecx = dcode */
- addl dist_r, %ecx
- movl (%eax,%ecx,4), %eax /* eax = lcode[hold & lmask] */
- jmp .L_dodist_mmx
-
-.align 16,0x90
-.L_clip_window_mmx:
-#define nbytes_r %ecx
- movl %eax, nbytes_r
- movl wsize(%esp), %eax /* prepare for dist compare */
- negl nbytes_r /* nbytes = -nbytes */
- movl window(%esp), from_r /* from = window */
-
- cmpl dist_r, %eax
- jb .L_invalid_distance_too_far /* if (dist > wsize) */
-
- addl dist_r, nbytes_r /* nbytes = dist - nbytes */
- cmpl $0, write(%esp)
- jne .L_wrap_around_window_mmx /* if (write != 0) */
-
- subl nbytes_r, %eax
- addl %eax, from_r /* from += wsize - nbytes */
-
- cmpl nbytes_r, len_r
- jbe .L_do_copy1_mmx /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
- jmp .L_do_copy1_mmx
-
- cmpl nbytes_r, len_r
- jbe .L_do_copy1_mmx /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
- jmp .L_do_copy1_mmx
-
-.L_wrap_around_window_mmx:
-#define write_r %eax
- movl write(%esp), write_r
- cmpl write_r, nbytes_r
- jbe .L_contiguous_in_window_mmx /* if (write >= nbytes) */
-
- addl wsize(%esp), from_r
- addl write_r, from_r
- subl nbytes_r, from_r /* from += wsize + write - nbytes */
- subl write_r, nbytes_r /* nbytes -= write */
-#undef write_r
-
- cmpl nbytes_r, len_r
- jbe .L_do_copy1_mmx /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl window(%esp), from_r /* from = window */
- movl write(%esp), nbytes_r /* nbytes = write */
- cmpl nbytes_r, len_r
- jbe .L_do_copy1_mmx /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
- jmp .L_do_copy1_mmx
-
-.L_contiguous_in_window_mmx:
-#define write_r %eax
- addl write_r, from_r
- subl nbytes_r, from_r /* from += write - nbytes */
-#undef write_r
-
- cmpl nbytes_r, len_r
- jbe .L_do_copy1_mmx /* if (nbytes >= len) */
-
- subl nbytes_r, len_r /* len -= nbytes */
- rep movsb
- movl out_r, from_r
- subl dist_r, from_r /* from = out - dist */
-
-.L_do_copy1_mmx:
-#undef nbytes_r
-#define in_r %esi
- movl len_r, %ecx
- rep movsb
-
- movl in(%esp), in_r /* move in back to %esi, toss from */
- movl lcode(%esp), %ebx /* move lcode back to %ebx, toss dist */
- jmp .L_while_test_mmx
-
-#undef hold_r
-#undef bitslong_r
-
-#endif /* USE_MMX || RUN_TIME_MMX */
-
-
-/*** USE_MMX, NO_MMX, and RUNTIME_MMX from here on ***/
-
-.L_invalid_distance_code:
- /* else {
- * strm->msg = "invalid distance code";
- * state->mode = BAD;
- * }
- */
- movl $.L_invalid_distance_code_msg, %ecx
- movl $INFLATE_MODE_BAD, %edx
- jmp .L_update_stream_state
-
-.L_test_for_end_of_block:
- /* else if (op & 32) {
- * state->mode = TYPE;
- * break;
- * }
- */
- testb $32, %al
- jz .L_invalid_literal_length_code /* if ((op & 32) == 0) */
-
- movl $0, %ecx
- movl $INFLATE_MODE_TYPE, %edx
- jmp .L_update_stream_state
-
-.L_invalid_literal_length_code:
- /* else {
- * strm->msg = "invalid literal/length code";
- * state->mode = BAD;
- * }
- */
- movl $.L_invalid_literal_length_code_msg, %ecx
- movl $INFLATE_MODE_BAD, %edx
- jmp .L_update_stream_state
-
-.L_invalid_distance_too_far:
- /* strm->msg = "invalid distance too far back";
- * state->mode = BAD;
- */
- movl in(%esp), in_r /* from_r has in's reg, put in back */
- movl $.L_invalid_distance_too_far_msg, %ecx
- movl $INFLATE_MODE_BAD, %edx
- jmp .L_update_stream_state
-
-.L_update_stream_state:
- /* set strm->msg = %ecx, strm->state->mode = %edx */
- movl strm_sp(%esp), %eax
- testl %ecx, %ecx /* if (msg != NULL) */
- jz .L_skip_msg
- movl %ecx, msg_strm(%eax) /* strm->msg = msg */
-.L_skip_msg:
- movl state_strm(%eax), %eax /* state = strm->state */
- movl %edx, mode_state(%eax) /* state->mode = edx (BAD | TYPE) */
- jmp .L_break_loop
-
-.align 32,0x90
-.L_break_loop:
-
-/*
- * Regs:
- *
- * bits = %ebp when mmx, and in %ebx when non-mmx
- * hold = %hold_mm when mmx, and in %ebp when non-mmx
- * in = %esi
- * out = %edi
- */
-
-#if defined( USE_MMX ) || defined( RUN_TIME_MMX )
-
-#if defined( RUN_TIME_MMX )
-
- cmpl $DO_USE_MMX, inflate_fast_use_mmx
- jne .L_update_next_in
-
-#endif /* RUN_TIME_MMX */
-
- movl %ebp, %ebx
-
-.L_update_next_in:
-
-#endif
-
-#define strm_r %eax
-#define state_r %edx
-
- /* len = bits >> 3;
- * in -= len;
- * bits -= len << 3;
- * hold &= (1U << bits) - 1;
- * state->hold = hold;
- * state->bits = bits;
- * strm->next_in = in;
- * strm->next_out = out;
- */
- movl strm_sp(%esp), strm_r
- movl %ebx, %ecx
- movl state_strm(strm_r), state_r
- shrl $3, %ecx
- subl %ecx, in_r
- shll $3, %ecx
- subl %ecx, %ebx
- movl out_r, next_out_strm(strm_r)
- movl %ebx, bits_state(state_r)
- movl %ebx, %ecx
-
- leal buf(%esp), %ebx
- cmpl %ebx, last(%esp)
- jne .L_buf_not_used /* if buf != last */
-
- subl %ebx, in_r /* in -= buf */
- movl next_in_strm(strm_r), %ebx
- movl %ebx, last(%esp) /* last = strm->next_in */
- addl %ebx, in_r /* in += strm->next_in */
- movl avail_in_strm(strm_r), %ebx
- subl $11, %ebx
- addl %ebx, last(%esp) /* last = &strm->next_in[ avail_in - 11 ] */
-
-.L_buf_not_used:
- movl in_r, next_in_strm(strm_r)
-
- movl $1, %ebx
- shll %cl, %ebx
- decl %ebx
-
-#if defined( USE_MMX ) || defined( RUN_TIME_MMX )
-
-#if defined( RUN_TIME_MMX )
-
- cmpl $DO_USE_MMX, inflate_fast_use_mmx
- jne .L_update_hold
-
-#endif /* RUN_TIME_MMX */
-
- psrlq used_mm, hold_mm /* hold_mm >>= last bit length */
- movd hold_mm, %ebp
-
- emms
-
-.L_update_hold:
-
-#endif /* USE_MMX || RUN_TIME_MMX */
-
- andl %ebx, %ebp
- movl %ebp, hold_state(state_r)
-
-#define last_r %ebx
-
- /* strm->avail_in = in < last ? 11 + (last - in) : 11 - (in - last) */
- movl last(%esp), last_r
- cmpl in_r, last_r
- jbe .L_last_is_smaller /* if (in >= last) */
-
- subl in_r, last_r /* last -= in */
- addl $11, last_r /* last += 11 */
- movl last_r, avail_in_strm(strm_r)
- jmp .L_fixup_out
-.L_last_is_smaller:
- subl last_r, in_r /* in -= last */
- negl in_r /* in = -in */
- addl $11, in_r /* in += 11 */
- movl in_r, avail_in_strm(strm_r)
-
-#undef last_r
-#define end_r %ebx
-
-.L_fixup_out:
- /* strm->avail_out = out < end ? 257 + (end - out) : 257 - (out - end)*/
- movl end(%esp), end_r
- cmpl out_r, end_r
- jbe .L_end_is_smaller /* if (out >= end) */
-
- subl out_r, end_r /* end -= out */
- addl $257, end_r /* end += 257 */
- movl end_r, avail_out_strm(strm_r)
- jmp .L_done
-.L_end_is_smaller:
- subl end_r, out_r /* out -= end */
- negl out_r /* out = -out */
- addl $257, out_r /* out += 257 */
- movl out_r, avail_out_strm(strm_r)
-
-#undef end_r
-#undef strm_r
-#undef state_r
-
-.L_done:
- addl $local_var_size, %esp
- popf
- popl %ebx
- popl %ebp
- popl %esi
- popl %edi
- ret
-
-#if defined( GAS_ELF )
-/* elf info */
-.type inflate_fast,@function
-.size inflate_fast,.-inflate_fast
-#endif
+++ /dev/null
-
-#include "zfstream.h"
-
-int main() {
-
- // Construct a stream object with this filebuffer. Anything sent
- // to this stream will go to standard out.
- gzofstream os( 1, ios::out );
-
- // This text is getting compressed and sent to stdout.
- // To prove this, run 'test | zcat'.
- os << "Hello, Mommy" << endl;
-
- os << setcompressionlevel( Z_NO_COMPRESSION );
- os << "hello, hello, hi, ho!" << endl;
-
- setcompressionlevel( os, Z_DEFAULT_COMPRESSION )
- << "I'm compressing again" << endl;
-
- os.close();
-
- return 0;
-
-}
+++ /dev/null
-
-#include "zfstream.h"
-
-gzfilebuf::gzfilebuf() :
- file(NULL),
- mode(0),
- own_file_descriptor(0)
-{ }
-
-gzfilebuf::~gzfilebuf() {
-
- sync();
- if ( own_file_descriptor )
- close();
-
-}
-
-gzfilebuf *gzfilebuf::open( const char *name,
- int io_mode ) {
-
- if ( is_open() )
- return NULL;
-
- char char_mode[10];
- char *p = char_mode;
-
- if ( io_mode & ios::in ) {
- mode = ios::in;
- *p++ = 'r';
- } else if ( io_mode & ios::app ) {
- mode = ios::app;
- *p++ = 'a';
- } else {
- mode = ios::out;
- *p++ = 'w';
- }
-
- if ( io_mode & ios::binary ) {
- mode |= ios::binary;
- *p++ = 'b';
- }
-
- // Hard code the compression level
- if ( io_mode & (ios::out|ios::app )) {
- *p++ = '9';
- }
-
- // Put the end-of-string indicator
- *p = '\0';
-
- if ( (file = gzopen(name, char_mode)) == NULL )
- return NULL;
-
- own_file_descriptor = 1;
-
- return this;
-
-}
-
-gzfilebuf *gzfilebuf::attach( int file_descriptor,
- int io_mode ) {
-
- if ( is_open() )
- return NULL;
-
- char char_mode[10];
- char *p = char_mode;
-
- if ( io_mode & ios::in ) {
- mode = ios::in;
- *p++ = 'r';
- } else if ( io_mode & ios::app ) {
- mode = ios::app;
- *p++ = 'a';
- } else {
- mode = ios::out;
- *p++ = 'w';
- }
-
- if ( io_mode & ios::binary ) {
- mode |= ios::binary;
- *p++ = 'b';
- }
-
- // Hard code the compression level
- if ( io_mode & (ios::out|ios::app )) {
- *p++ = '9';
- }
-
- // Put the end-of-string indicator
- *p = '\0';
-
- if ( (file = gzdopen(file_descriptor, char_mode)) == NULL )
- return NULL;
-
- own_file_descriptor = 0;
-
- return this;
-
-}
-
-gzfilebuf *gzfilebuf::close() {
-
- if ( is_open() ) {
-
- sync();
- gzclose( file );
- file = NULL;
-
- }
-
- return this;
-
-}
-
-int gzfilebuf::setcompressionlevel( int comp_level ) {
-
- return gzsetparams(file, comp_level, -2);
-
-}
-
-int gzfilebuf::setcompressionstrategy( int comp_strategy ) {
-
- return gzsetparams(file, -2, comp_strategy);
-
-}
-
-
-streampos gzfilebuf::seekoff( streamoff off, ios::seek_dir dir, int which ) {
-
- return streampos(EOF);
-
-}
-
-int gzfilebuf::underflow() {
-
- // If the file hasn't been opened for reading, error.
- if ( !is_open() || !(mode & ios::in) )
- return EOF;
-
- // if a buffer doesn't exists, allocate one.
- if ( !base() ) {
-
- if ( (allocate()) == EOF )
- return EOF;
- setp(0,0);
-
- } else {
-
- if ( in_avail() )
- return (unsigned char) *gptr();
-
- if ( out_waiting() ) {
- if ( flushbuf() == EOF )
- return EOF;
- }
-
- }
-
- // Attempt to fill the buffer.
-
- int result = fillbuf();
- if ( result == EOF ) {
- // disable get area
- setg(0,0,0);
- return EOF;
- }
-
- return (unsigned char) *gptr();
-
-}
-
-int gzfilebuf::overflow( int c ) {
-
- if ( !is_open() || !(mode & ios::out) )
- return EOF;
-
- if ( !base() ) {
- if ( allocate() == EOF )
- return EOF;
- setg(0,0,0);
- } else {
- if (in_avail()) {
- return EOF;
- }
- if (out_waiting()) {
- if (flushbuf() == EOF)
- return EOF;
- }
- }
-
- int bl = blen();
- setp( base(), base() + bl);
-
- if ( c != EOF ) {
-
- *pptr() = c;
- pbump(1);
-
- }
-
- return 0;
-
-}
-
-int gzfilebuf::sync() {
-
- if ( !is_open() )
- return EOF;
-
- if ( out_waiting() )
- return flushbuf();
-
- return 0;
-
-}
-
-int gzfilebuf::flushbuf() {
-
- int n;
- char *q;
-
- q = pbase();
- n = pptr() - q;
-
- if ( gzwrite( file, q, n) < n )
- return EOF;
-
- setp(0,0);
-
- return 0;
-
-}
-
-int gzfilebuf::fillbuf() {
-
- int required;
- char *p;
-
- p = base();
-
- required = blen();
-
- int t = gzread( file, p, required );
-
- if ( t <= 0) return EOF;
-
- setg( base(), base(), base()+t);
-
- return t;
-
-}
-
-gzfilestream_common::gzfilestream_common() :
- ios( gzfilestream_common::rdbuf() )
-{ }
-
-gzfilestream_common::~gzfilestream_common()
-{ }
-
-void gzfilestream_common::attach( int fd, int io_mode ) {
-
- if ( !buffer.attach( fd, io_mode) )
- clear( ios::failbit | ios::badbit );
- else
- clear();
-
-}
-
-void gzfilestream_common::open( const char *name, int io_mode ) {
-
- if ( !buffer.open( name, io_mode ) )
- clear( ios::failbit | ios::badbit );
- else
- clear();
-
-}
-
-void gzfilestream_common::close() {
-
- if ( !buffer.close() )
- clear( ios::failbit | ios::badbit );
-
-}
-
-gzfilebuf *gzfilestream_common::rdbuf()
-{
- return &buffer;
-}
-
-gzifstream::gzifstream() :
- ios( gzfilestream_common::rdbuf() )
-{
- clear( ios::badbit );
-}
-
-gzifstream::gzifstream( const char *name, int io_mode ) :
- ios( gzfilestream_common::rdbuf() )
-{
- gzfilestream_common::open( name, io_mode );
-}
-
-gzifstream::gzifstream( int fd, int io_mode ) :
- ios( gzfilestream_common::rdbuf() )
-{
- gzfilestream_common::attach( fd, io_mode );
-}
-
-gzifstream::~gzifstream() { }
-
-gzofstream::gzofstream() :
- ios( gzfilestream_common::rdbuf() )
-{
- clear( ios::badbit );
-}
-
-gzofstream::gzofstream( const char *name, int io_mode ) :
- ios( gzfilestream_common::rdbuf() )
-{
- gzfilestream_common::open( name, io_mode );
-}
-
-gzofstream::gzofstream( int fd, int io_mode ) :
- ios( gzfilestream_common::rdbuf() )
-{
- gzfilestream_common::attach( fd, io_mode );
-}
-
-gzofstream::~gzofstream() { }
+++ /dev/null
-
-#ifndef zfstream_h
-#define zfstream_h
-
-#include <fstream.h>
-#include "zlib.h"
-
-class gzfilebuf : public streambuf {
-
-public:
-
- gzfilebuf( );
- virtual ~gzfilebuf();
-
- gzfilebuf *open( const char *name, int io_mode );
- gzfilebuf *attach( int file_descriptor, int io_mode );
- gzfilebuf *close();
-
- int setcompressionlevel( int comp_level );
- int setcompressionstrategy( int comp_strategy );
-
- inline int is_open() const { return (file !=NULL); }
-
- virtual streampos seekoff( streamoff, ios::seek_dir, int );
-
- virtual int sync();
-
-protected:
-
- virtual int underflow();
- virtual int overflow( int = EOF );
-
-private:
-
- gzFile file;
- short mode;
- short own_file_descriptor;
-
- int flushbuf();
- int fillbuf();
-
-};
-
-class gzfilestream_common : virtual public ios {
-
- friend class gzifstream;
- friend class gzofstream;
- friend gzofstream &setcompressionlevel( gzofstream &, int );
- friend gzofstream &setcompressionstrategy( gzofstream &, int );
-
-public:
- virtual ~gzfilestream_common();
-
- void attach( int fd, int io_mode );
- void open( const char *name, int io_mode );
- void close();
-
-protected:
- gzfilestream_common();
-
-private:
- gzfilebuf *rdbuf();
-
- gzfilebuf buffer;
-
-};
-
-class gzifstream : public gzfilestream_common, public istream {
-
-public:
-
- gzifstream();
- gzifstream( const char *name, int io_mode = ios::in );
- gzifstream( int fd, int io_mode = ios::in );
-
- virtual ~gzifstream();
-
-};
-
-class gzofstream : public gzfilestream_common, public ostream {
-
-public:
-
- gzofstream();
- gzofstream( const char *name, int io_mode = ios::out );
- gzofstream( int fd, int io_mode = ios::out );
-
- virtual ~gzofstream();
-
-};
-
-template<class T> class gzomanip {
- friend gzofstream &operator<<(gzofstream &, const gzomanip<T> &);
-public:
- gzomanip(gzofstream &(*f)(gzofstream &, T), T v) : func(f), val(v) { }
-private:
- gzofstream &(*func)(gzofstream &, T);
- T val;
-};
-
-template<class T> gzofstream &operator<<(gzofstream &s, const gzomanip<T> &m)
-{
- return (*m.func)(s, m.val);
-}
-
-inline gzofstream &setcompressionlevel( gzofstream &s, int l )
-{
- (s.rdbuf())->setcompressionlevel(l);
- return s;
-}
-
-inline gzofstream &setcompressionstrategy( gzofstream &s, int l )
-{
- (s.rdbuf())->setcompressionstrategy(l);
- return s;
-}
-
-inline gzomanip<int> setcompressionlevel(int l)
-{
- return gzomanip<int>(&setcompressionlevel,l);
-}
-
-inline gzomanip<int> setcompressionstrategy(int l)
-{
- return gzomanip<int>(&setcompressionstrategy,l);
-}
-
-#endif
+++ /dev/null
-/*
- *
- * Copyright (c) 1997
- * Christian Michelsen Research AS
- * Advanced Computing
- * Fantoftvegen 38, 5036 BERGEN, Norway
- * http://www.cmr.no
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation. Christian Michelsen Research AS makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- */
-
-#ifndef ZSTREAM__H
-#define ZSTREAM__H
-
-/*
- * zstream.h - C++ interface to the 'zlib' general purpose compression library
- * $Id: zstream.h 1.1 1997-06-25 12:00:56+02 tyge Exp tyge $
- */
-
-#include <strstream.h>
-#include <string.h>
-#include <stdio.h>
-#include "zlib.h"
-
-#if defined(_WIN32)
-# include <fcntl.h>
-# include <io.h>
-# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
-#else
-# define SET_BINARY_MODE(file)
-#endif
-
-class zstringlen {
-public:
- zstringlen(class izstream&);
- zstringlen(class ozstream&, const char*);
- size_t value() const { return val.word; }
-private:
- struct Val { unsigned char byte; size_t word; } val;
-};
-
-// ----------------------------- izstream -----------------------------
-
-class izstream
-{
- public:
- izstream() : m_fp(0) {}
- izstream(FILE* fp) : m_fp(0) { open(fp); }
- izstream(const char* name) : m_fp(0) { open(name); }
- ~izstream() { close(); }
-
- /* Opens a gzip (.gz) file for reading.
- * open() can be used to read a file which is not in gzip format;
- * in this case read() will directly read from the file without
- * decompression. errno can be checked to distinguish two error
- * cases (if errno is zero, the zlib error is Z_MEM_ERROR).
- */
- void open(const char* name) {
- if (m_fp) close();
- m_fp = ::gzopen(name, "rb");
- }
-
- void open(FILE* fp) {
- SET_BINARY_MODE(fp);
- if (m_fp) close();
- m_fp = ::gzdopen(fileno(fp), "rb");
- }
-
- /* Flushes all pending input if necessary, closes the compressed file
- * and deallocates all the (de)compression state. The return value is
- * the zlib error number (see function error() below).
- */
- int close() {
- int r = ::gzclose(m_fp);
- m_fp = 0; return r;
- }
-
- /* Binary read the given number of bytes from the compressed file.
- */
- int read(void* buf, size_t len) {
- return ::gzread(m_fp, buf, len);
- }
-
- /* Returns the error message for the last error which occurred on the
- * given compressed file. errnum is set to zlib error number. If an
- * error occurred in the file system and not in the compression library,
- * errnum is set to Z_ERRNO and the application may consult errno
- * to get the exact error code.
- */
- const char* error(int* errnum) {
- return ::gzerror(m_fp, errnum);
- }
-
- gzFile fp() { return m_fp; }
-
- private:
- gzFile m_fp;
-};
-
-/*
- * Binary read the given (array of) object(s) from the compressed file.
- * If the input file was not in gzip format, read() copies the objects number
- * of bytes into the buffer.
- * returns the number of uncompressed bytes actually read
- * (0 for end of file, -1 for error).
- */
-template <class T, class Items>
-inline int read(izstream& zs, T* x, Items items) {
- return ::gzread(zs.fp(), x, items*sizeof(T));
-}
-
-/*
- * Binary input with the '>' operator.
- */
-template <class T>
-inline izstream& operator>(izstream& zs, T& x) {
- ::gzread(zs.fp(), &x, sizeof(T));
- return zs;
-}
-
-
-inline zstringlen::zstringlen(izstream& zs) {
- zs > val.byte;
- if (val.byte == 255) zs > val.word;
- else val.word = val.byte;
-}
-
-/*
- * Read length of string + the string with the '>' operator.
- */
-inline izstream& operator>(izstream& zs, char* x) {
- zstringlen len(zs);
- ::gzread(zs.fp(), x, len.value());
- x[len.value()] = '\0';
- return zs;
-}
-
-inline char* read_string(izstream& zs) {
- zstringlen len(zs);
- char* x = new char[len.value()+1];
- ::gzread(zs.fp(), x, len.value());
- x[len.value()] = '\0';
- return x;
-}
-
-// ----------------------------- ozstream -----------------------------
-
-class ozstream
-{
- public:
- ozstream() : m_fp(0), m_os(0) {
- }
- ozstream(FILE* fp, int level = Z_DEFAULT_COMPRESSION)
- : m_fp(0), m_os(0) {
- open(fp, level);
- }
- ozstream(const char* name, int level = Z_DEFAULT_COMPRESSION)
- : m_fp(0), m_os(0) {
- open(name, level);
- }
- ~ozstream() {
- close();
- }
-
- /* Opens a gzip (.gz) file for writing.
- * The compression level parameter should be in 0..9
- * errno can be checked to distinguish two error cases
- * (if errno is zero, the zlib error is Z_MEM_ERROR).
- */
- void open(const char* name, int level = Z_DEFAULT_COMPRESSION) {
- char mode[4] = "wb\0";
- if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
- if (m_fp) close();
- m_fp = ::gzopen(name, mode);
- }
-
- /* open from a FILE pointer.
- */
- void open(FILE* fp, int level = Z_DEFAULT_COMPRESSION) {
- SET_BINARY_MODE(fp);
- char mode[4] = "wb\0";
- if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
- if (m_fp) close();
- m_fp = ::gzdopen(fileno(fp), mode);
- }
-
- /* Flushes all pending output if necessary, closes the compressed file
- * and deallocates all the (de)compression state. The return value is
- * the zlib error number (see function error() below).
- */
- int close() {
- if (m_os) {
- ::gzwrite(m_fp, m_os->str(), m_os->pcount());
- delete[] m_os->str(); delete m_os; m_os = 0;
- }
- int r = ::gzclose(m_fp); m_fp = 0; return r;
- }
-
- /* Binary write the given number of bytes into the compressed file.
- */
- int write(const void* buf, size_t len) {
- return ::gzwrite(m_fp, (voidp) buf, len);
- }
-
- /* Flushes all pending output into the compressed file. The parameter
- * _flush is as in the deflate() function. The return value is the zlib
- * error number (see function gzerror below). flush() returns Z_OK if
- * the flush_ parameter is Z_FINISH and all output could be flushed.
- * flush() should be called only when strictly necessary because it can
- * degrade compression.
- */
- int flush(int _flush) {
- os_flush();
- return ::gzflush(m_fp, _flush);
- }
-
- /* Returns the error message for the last error which occurred on the
- * given compressed file. errnum is set to zlib error number. If an
- * error occurred in the file system and not in the compression library,
- * errnum is set to Z_ERRNO and the application may consult errno
- * to get the exact error code.
- */
- const char* error(int* errnum) {
- return ::gzerror(m_fp, errnum);
- }
-
- gzFile fp() { return m_fp; }
-
- ostream& os() {
- if (m_os == 0) m_os = new ostrstream;
- return *m_os;
- }
-
- void os_flush() {
- if (m_os && m_os->pcount()>0) {
- ostrstream* oss = new ostrstream;
- oss->fill(m_os->fill());
- oss->flags(m_os->flags());
- oss->precision(m_os->precision());
- oss->width(m_os->width());
- ::gzwrite(m_fp, m_os->str(), m_os->pcount());
- delete[] m_os->str(); delete m_os; m_os = oss;
- }
- }
-
- private:
- gzFile m_fp;
- ostrstream* m_os;
-};
-
-/*
- * Binary write the given (array of) object(s) into the compressed file.
- * returns the number of uncompressed bytes actually written
- * (0 in case of error).
- */
-template <class T, class Items>
-inline int write(ozstream& zs, const T* x, Items items) {
- return ::gzwrite(zs.fp(), (voidp) x, items*sizeof(T));
-}
-
-/*
- * Binary output with the '<' operator.
- */
-template <class T>
-inline ozstream& operator<(ozstream& zs, const T& x) {
- ::gzwrite(zs.fp(), (voidp) &x, sizeof(T));
- return zs;
-}
-
-inline zstringlen::zstringlen(ozstream& zs, const char* x) {
- val.byte = 255; val.word = ::strlen(x);
- if (val.word < 255) zs < (val.byte = val.word);
- else zs < val;
-}
-
-/*
- * Write length of string + the string with the '<' operator.
- */
-inline ozstream& operator<(ozstream& zs, const char* x) {
- zstringlen len(zs, x);
- ::gzwrite(zs.fp(), (voidp) x, len.value());
- return zs;
-}
-
-#ifdef _MSC_VER
-inline ozstream& operator<(ozstream& zs, char* const& x) {
- return zs < (const char*) x;
-}
-#endif
-
-/*
- * Ascii write with the << operator;
- */
-template <class T>
-inline ostream& operator<<(ozstream& zs, const T& x) {
- zs.os_flush();
- return zs.os() << x;
-}
-
-#endif
+++ /dev/null
-#include "zstream.h"
-#include <math.h>
-#include <stdlib.h>
-#include <iomanip.h>
-
-void main() {
- char h[256] = "Hello";
- char* g = "Goodbye";
- ozstream out("temp.gz");
- out < "This works well" < h < g;
- out.close();
-
- izstream in("temp.gz"); // read it back
- char *x = read_string(in), *y = new char[256], z[256];
- in > y > z;
- in.close();
- cout << x << endl << y << endl << z << endl;
-
- out.open("temp.gz"); // try ascii output; zcat temp.gz to see the results
- out << setw(50) << setfill('#') << setprecision(20) << x << endl << y << endl << z << endl;
- out << z << endl << y << endl << x << endl;
- out << 1.1234567890123456789 << endl;
-
- delete[] x; delete[] y;
-}
+++ /dev/null
-These classes provide a C++ stream interface to the zlib library. It allows you
-to do things like:
-
- gzofstream outf("blah.gz");
- outf << "These go into the gzip file " << 123 << endl;
-
-It does this by deriving a specialized stream buffer for gzipped files, which is
-the way Stroustrup would have done it. :->
-
-The gzifstream and gzofstream classes were originally written by Kevin Ruland
-and made available in the zlib contrib/iostream directory. The older version still
-compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of
-this version.
-
-The new classes are as standard-compliant as possible, closely following the
-approach of the standard library's fstream classes. It compiles under gcc versions
-3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard
-library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs
-from the previous one in the following respects:
-- added showmanyc
-- added setbuf, with support for unbuffered output via setbuf(0,0)
-- a few bug fixes of stream behavior
-- gzipped output file opened with default compression level instead of maximum level
-- setcompressionlevel()/strategy() members replaced by single setcompression()
-
-The code is provided "as is", with the permission to use, copy, modify, distribute
-and sell it for any purpose without fee.
-
-Ludwig Schwardt
-<schwardt@sun.ac.za>
-
-DSP Lab
-Electrical & Electronic Engineering Department
-University of Stellenbosch
-South Africa
+++ /dev/null
-Possible upgrades to gzfilebuf:
-
-- The ability to do putback (e.g. putbackfail)
-
-- The ability to seek (zlib supports this, but could be slow/tricky)
-
-- Simultaneous read/write access (does it make sense?)
-
-- Support for ios_base::ate open mode
-
-- Locale support?
-
-- Check public interface to see which calls give problems
- (due to dependence on library internals)
-
-- Override operator<<(ostream&, gzfilebuf*) to allow direct copying
- of stream buffer to stream ( i.e. os << is.rdbuf(); )
+++ /dev/null
-/*
- * Test program for gzifstream and gzofstream
- *
- * by Ludwig Schwardt <schwardt@sun.ac.za>
- * original version by Kevin Ruland <kevin@rodin.wustl.edu>
- */
-
-#include "zfstream.h"
-#include <iostream> // for cout
-
-int main() {
-
- gzofstream outf;
- gzifstream inf;
- char buf[80];
-
- outf.open("test1.txt.gz");
- outf << "The quick brown fox sidestepped the lazy canine\n"
- << 1.3 << "\nPlan " << 9 << std::endl;
- outf.close();
- std::cout << "Wrote the following message to 'test1.txt.gz' (check with zcat or zless):\n"
- << "The quick brown fox sidestepped the lazy canine\n"
- << 1.3 << "\nPlan " << 9 << std::endl;
-
- std::cout << "\nReading 'test1.txt.gz' (buffered) produces:\n";
- inf.open("test1.txt.gz");
- while (inf.getline(buf,80,'\n')) {
- std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
- }
- inf.close();
-
- outf.rdbuf()->pubsetbuf(0,0);
- outf.open("test2.txt.gz");
- outf << setcompression(Z_NO_COMPRESSION)
- << "The quick brown fox sidestepped the lazy canine\n"
- << 1.3 << "\nPlan " << 9 << std::endl;
- outf.close();
- std::cout << "\nWrote the same message to 'test2.txt.gz' in uncompressed form";
-
- std::cout << "\nReading 'test2.txt.gz' (unbuffered) produces:\n";
- inf.rdbuf()->pubsetbuf(0,0);
- inf.open("test2.txt.gz");
- while (inf.getline(buf,80,'\n')) {
- std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
- }
- inf.close();
-
- return 0;
-
-}
+++ /dev/null
-/*
- * A C++ I/O streams interface to the zlib gz* functions
- *
- * by Ludwig Schwardt <schwardt@sun.ac.za>
- * original version by Kevin Ruland <kevin@rodin.wustl.edu>
- *
- * This version is standard-compliant and compatible with gcc 3.x.
- */
-
-#include "zfstream.h"
-#include <cstring> // for strcpy, strcat, strlen (mode strings)
-#include <cstdio> // for BUFSIZ
-
-// Internal buffer sizes (default and "unbuffered" versions)
-#define BIGBUFSIZE BUFSIZ
-#define SMALLBUFSIZE 1
-
-/*****************************************************************************/
-
-// Default constructor
-gzfilebuf::gzfilebuf()
-: file(NULL), io_mode(std::ios_base::openmode(0)), own_fd(false),
- buffer(NULL), buffer_size(BIGBUFSIZE), own_buffer(true)
-{
- // No buffers to start with
- this->disable_buffer();
-}
-
-// Destructor
-gzfilebuf::~gzfilebuf()
-{
- // Sync output buffer and close only if responsible for file
- // (i.e. attached streams should be left open at this stage)
- this->sync();
- if (own_fd)
- this->close();
- // Make sure internal buffer is deallocated
- this->disable_buffer();
-}
-
-// Set compression level and strategy
-int
-gzfilebuf::setcompression(int comp_level,
- int comp_strategy)
-{
- return gzsetparams(file, comp_level, comp_strategy);
-}
-
-// Open gzipped file
-gzfilebuf*
-gzfilebuf::open(const char *name,
- std::ios_base::openmode mode)
-{
- // Fail if file already open
- if (this->is_open())
- return NULL;
- // Don't support simultaneous read/write access (yet)
- if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
- return NULL;
-
- // Build mode string for gzopen and check it [27.8.1.3.2]
- char char_mode[6] = "\0\0\0\0\0";
- if (!this->open_mode(mode, char_mode))
- return NULL;
-
- // Attempt to open file
- if ((file = gzopen(name, char_mode)) == NULL)
- return NULL;
-
- // On success, allocate internal buffer and set flags
- this->enable_buffer();
- io_mode = mode;
- own_fd = true;
- return this;
-}
-
-// Attach to gzipped file
-gzfilebuf*
-gzfilebuf::attach(int fd,
- std::ios_base::openmode mode)
-{
- // Fail if file already open
- if (this->is_open())
- return NULL;
- // Don't support simultaneous read/write access (yet)
- if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
- return NULL;
-
- // Build mode string for gzdopen and check it [27.8.1.3.2]
- char char_mode[6] = "\0\0\0\0\0";
- if (!this->open_mode(mode, char_mode))
- return NULL;
-
- // Attempt to attach to file
- if ((file = gzdopen(fd, char_mode)) == NULL)
- return NULL;
-
- // On success, allocate internal buffer and set flags
- this->enable_buffer();
- io_mode = mode;
- own_fd = false;
- return this;
-}
-
-// Close gzipped file
-gzfilebuf*
-gzfilebuf::close()
-{
- // Fail immediately if no file is open
- if (!this->is_open())
- return NULL;
- // Assume success
- gzfilebuf* retval = this;
- // Attempt to sync and close gzipped file
- if (this->sync() == -1)
- retval = NULL;
- if (gzclose(file) < 0)
- retval = NULL;
- // File is now gone anyway (postcondition [27.8.1.3.8])
- file = NULL;
- own_fd = false;
- // Destroy internal buffer if it exists
- this->disable_buffer();
- return retval;
-}
-
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-// Convert int open mode to mode string
-bool
-gzfilebuf::open_mode(std::ios_base::openmode mode,
- char* c_mode) const
-{
- bool testb = mode & std::ios_base::binary;
- bool testi = mode & std::ios_base::in;
- bool testo = mode & std::ios_base::out;
- bool testt = mode & std::ios_base::trunc;
- bool testa = mode & std::ios_base::app;
-
- // Check for valid flag combinations - see [27.8.1.3.2] (Table 92)
- // Original zfstream hardcoded the compression level to maximum here...
- // Double the time for less than 1% size improvement seems
- // excessive though - keeping it at the default level
- // To change back, just append "9" to the next three mode strings
- if (!testi && testo && !testt && !testa)
- strcpy(c_mode, "w");
- if (!testi && testo && !testt && testa)
- strcpy(c_mode, "a");
- if (!testi && testo && testt && !testa)
- strcpy(c_mode, "w");
- if (testi && !testo && !testt && !testa)
- strcpy(c_mode, "r");
- // No read/write mode yet
-// if (testi && testo && !testt && !testa)
-// strcpy(c_mode, "r+");
-// if (testi && testo && testt && !testa)
-// strcpy(c_mode, "w+");
-
- // Mode string should be empty for invalid combination of flags
- if (strlen(c_mode) == 0)
- return false;
- if (testb)
- strcat(c_mode, "b");
- return true;
-}
-
-// Determine number of characters in internal get buffer
-std::streamsize
-gzfilebuf::showmanyc()
-{
- // Calls to underflow will fail if file not opened for reading
- if (!this->is_open() || !(io_mode & std::ios_base::in))
- return -1;
- // Make sure get area is in use
- if (this->gptr() && (this->gptr() < this->egptr()))
- return std::streamsize(this->egptr() - this->gptr());
- else
- return 0;
-}
-
-// Fill get area from gzipped file
-gzfilebuf::int_type
-gzfilebuf::underflow()
-{
- // If something is left in the get area by chance, return it
- // (this shouldn't normally happen, as underflow is only supposed
- // to be called when gptr >= egptr, but it serves as error check)
- if (this->gptr() && (this->gptr() < this->egptr()))
- return traits_type::to_int_type(*(this->gptr()));
-
- // If the file hasn't been opened for reading, produce error
- if (!this->is_open() || !(io_mode & std::ios_base::in))
- return traits_type::eof();
-
- // Attempt to fill internal buffer from gzipped file
- // (buffer must be guaranteed to exist...)
- int bytes_read = gzread(file, buffer, buffer_size);
- // Indicates error or EOF
- if (bytes_read <= 0)
- {
- // Reset get area
- this->setg(buffer, buffer, buffer);
- return traits_type::eof();
- }
- // Make all bytes read from file available as get area
- this->setg(buffer, buffer, buffer + bytes_read);
-
- // Return next character in get area
- return traits_type::to_int_type(*(this->gptr()));
-}
-
-// Write put area to gzipped file
-gzfilebuf::int_type
-gzfilebuf::overflow(int_type c)
-{
- // Determine whether put area is in use
- if (this->pbase())
- {
- // Double-check pointer range
- if (this->pptr() > this->epptr() || this->pptr() < this->pbase())
- return traits_type::eof();
- // Add extra character to buffer if not EOF
- if (!traits_type::eq_int_type(c, traits_type::eof()))
- {
- *(this->pptr()) = traits_type::to_char_type(c);
- this->pbump(1);
- }
- // Number of characters to write to file
- int bytes_to_write = this->pptr() - this->pbase();
- // Overflow doesn't fail if nothing is to be written
- if (bytes_to_write > 0)
- {
- // If the file hasn't been opened for writing, produce error
- if (!this->is_open() || !(io_mode & std::ios_base::out))
- return traits_type::eof();
- // If gzipped file won't accept all bytes written to it, fail
- if (gzwrite(file, this->pbase(), bytes_to_write) != bytes_to_write)
- return traits_type::eof();
- // Reset next pointer to point to pbase on success
- this->pbump(-bytes_to_write);
- }
- }
- // Write extra character to file if not EOF
- else if (!traits_type::eq_int_type(c, traits_type::eof()))
- {
- // If the file hasn't been opened for writing, produce error
- if (!this->is_open() || !(io_mode & std::ios_base::out))
- return traits_type::eof();
- // Impromptu char buffer (allows "unbuffered" output)
- char_type last_char = traits_type::to_char_type(c);
- // If gzipped file won't accept this character, fail
- if (gzwrite(file, &last_char, 1) != 1)
- return traits_type::eof();
- }
-
- // If you got here, you have succeeded (even if c was EOF)
- // The return value should therefore be non-EOF
- if (traits_type::eq_int_type(c, traits_type::eof()))
- return traits_type::not_eof(c);
- else
- return c;
-}
-
-// Assign new buffer
-std::streambuf*
-gzfilebuf::setbuf(char_type* p,
- std::streamsize n)
-{
- // First make sure stuff is sync'ed, for safety
- if (this->sync() == -1)
- return NULL;
- // If buffering is turned off on purpose via setbuf(0,0), still allocate one...
- // "Unbuffered" only really refers to put [27.8.1.4.10], while get needs at
- // least a buffer of size 1 (very inefficient though, therefore make it bigger?)
- // This follows from [27.5.2.4.3]/12 (gptr needs to point at something, it seems)
- if (!p || !n)
- {
- // Replace existing buffer (if any) with small internal buffer
- this->disable_buffer();
- buffer = NULL;
- buffer_size = 0;
- own_buffer = true;
- this->enable_buffer();
- }
- else
- {
- // Replace existing buffer (if any) with external buffer
- this->disable_buffer();
- buffer = p;
- buffer_size = n;
- own_buffer = false;
- this->enable_buffer();
- }
- return this;
-}
-
-// Write put area to gzipped file (i.e. ensures that put area is empty)
-int
-gzfilebuf::sync()
-{
- return traits_type::eq_int_type(this->overflow(), traits_type::eof()) ? -1 : 0;
-}
-
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-// Allocate internal buffer
-void
-gzfilebuf::enable_buffer()
-{
- // If internal buffer required, allocate one
- if (own_buffer && !buffer)
- {
- // Check for buffered vs. "unbuffered"
- if (buffer_size > 0)
- {
- // Allocate internal buffer
- buffer = new char_type[buffer_size];
- // Get area starts empty and will be expanded by underflow as need arises
- this->setg(buffer, buffer, buffer);
- // Setup entire internal buffer as put area.
- // The one-past-end pointer actually points to the last element of the buffer,
- // so that overflow(c) can safely add the extra character c to the sequence.
- // These pointers remain in place for the duration of the buffer
- this->setp(buffer, buffer + buffer_size - 1);
- }
- else
- {
- // Even in "unbuffered" case, (small?) get buffer is still required
- buffer_size = SMALLBUFSIZE;
- buffer = new char_type[buffer_size];
- this->setg(buffer, buffer, buffer);
- // "Unbuffered" means no put buffer
- this->setp(0, 0);
- }
- }
- else
- {
- // If buffer already allocated, reset buffer pointers just to make sure no
- // stale chars are lying around
- this->setg(buffer, buffer, buffer);
- this->setp(buffer, buffer + buffer_size - 1);
- }
-}
-
-// Destroy internal buffer
-void
-gzfilebuf::disable_buffer()
-{
- // If internal buffer exists, deallocate it
- if (own_buffer && buffer)
- {
- // Preserve unbuffered status by zeroing size
- if (!this->pbase())
- buffer_size = 0;
- delete[] buffer;
- buffer = NULL;
- this->setg(0, 0, 0);
- this->setp(0, 0);
- }
- else
- {
- // Reset buffer pointers to initial state if external buffer exists
- this->setg(buffer, buffer, buffer);
- if (buffer)
- this->setp(buffer, buffer + buffer_size - 1);
- else
- this->setp(0, 0);
- }
-}
-
-/*****************************************************************************/
-
-// Default constructor initializes stream buffer
-gzifstream::gzifstream()
-: std::istream(NULL), sb()
-{ this->init(&sb); }
-
-// Initialize stream buffer and open file
-gzifstream::gzifstream(const char* name,
- std::ios_base::openmode mode)
-: std::istream(NULL), sb()
-{
- this->init(&sb);
- this->open(name, mode);
-}
-
-// Initialize stream buffer and attach to file
-gzifstream::gzifstream(int fd,
- std::ios_base::openmode mode)
-: std::istream(NULL), sb()
-{
- this->init(&sb);
- this->attach(fd, mode);
-}
-
-// Open file and go into fail() state if unsuccessful
-void
-gzifstream::open(const char* name,
- std::ios_base::openmode mode)
-{
- if (!sb.open(name, mode | std::ios_base::in))
- this->setstate(std::ios_base::failbit);
- else
- this->clear();
-}
-
-// Attach to file and go into fail() state if unsuccessful
-void
-gzifstream::attach(int fd,
- std::ios_base::openmode mode)
-{
- if (!sb.attach(fd, mode | std::ios_base::in))
- this->setstate(std::ios_base::failbit);
- else
- this->clear();
-}
-
-// Close file
-void
-gzifstream::close()
-{
- if (!sb.close())
- this->setstate(std::ios_base::failbit);
-}
-
-/*****************************************************************************/
-
-// Default constructor initializes stream buffer
-gzofstream::gzofstream()
-: std::ostream(NULL), sb()
-{ this->init(&sb); }
-
-// Initialize stream buffer and open file
-gzofstream::gzofstream(const char* name,
- std::ios_base::openmode mode)
-: std::ostream(NULL), sb()
-{
- this->init(&sb);
- this->open(name, mode);
-}
-
-// Initialize stream buffer and attach to file
-gzofstream::gzofstream(int fd,
- std::ios_base::openmode mode)
-: std::ostream(NULL), sb()
-{
- this->init(&sb);
- this->attach(fd, mode);
-}
-
-// Open file and go into fail() state if unsuccessful
-void
-gzofstream::open(const char* name,
- std::ios_base::openmode mode)
-{
- if (!sb.open(name, mode | std::ios_base::out))
- this->setstate(std::ios_base::failbit);
- else
- this->clear();
-}
-
-// Attach to file and go into fail() state if unsuccessful
-void
-gzofstream::attach(int fd,
- std::ios_base::openmode mode)
-{
- if (!sb.attach(fd, mode | std::ios_base::out))
- this->setstate(std::ios_base::failbit);
- else
- this->clear();
-}
-
-// Close file
-void
-gzofstream::close()
-{
- if (!sb.close())
- this->setstate(std::ios_base::failbit);
-}
+++ /dev/null
-/*
- * A C++ I/O streams interface to the zlib gz* functions
- *
- * by Ludwig Schwardt <schwardt@sun.ac.za>
- * original version by Kevin Ruland <kevin@rodin.wustl.edu>
- *
- * This version is standard-compliant and compatible with gcc 3.x.
- */
-
-#ifndef ZFSTREAM_H
-#define ZFSTREAM_H
-
-#include <istream> // not iostream, since we don't need cin/cout
-#include <ostream>
-#include "zlib.h"
-
-/*****************************************************************************/
-
-/**
- * @brief Gzipped file stream buffer class.
- *
- * This class implements basic_filebuf for gzipped files. It doesn't yet support
- * seeking (allowed by zlib but slow/limited), putback and read/write access
- * (tricky). Otherwise, it attempts to be a drop-in replacement for the standard
- * file streambuf.
-*/
-class gzfilebuf : public std::streambuf
-{
-public:
- // Default constructor.
- gzfilebuf();
-
- // Destructor.
- virtual
- ~gzfilebuf();
-
- /**
- * @brief Set compression level and strategy on the fly.
- * @param comp_level Compression level (see zlib.h for allowed values)
- * @param comp_strategy Compression strategy (see zlib.h for allowed values)
- * @return Z_OK on success, Z_STREAM_ERROR otherwise.
- *
- * Unfortunately, these parameters cannot be modified separately, as the
- * previous zfstream version assumed. Since the strategy is seldom changed,
- * it can default and setcompression(level) then becomes like the old
- * setcompressionlevel(level).
- */
- int
- setcompression(int comp_level,
- int comp_strategy = Z_DEFAULT_STRATEGY);
-
- /**
- * @brief Check if file is open.
- * @return True if file is open.
- */
- bool
- is_open() const { return (file != NULL); }
-
- /**
- * @brief Open gzipped file.
- * @param name File name.
- * @param mode Open mode flags.
- * @return @c this on success, NULL on failure.
- */
- gzfilebuf*
- open(const char* name,
- std::ios_base::openmode mode);
-
- /**
- * @brief Attach to already open gzipped file.
- * @param fd File descriptor.
- * @param mode Open mode flags.
- * @return @c this on success, NULL on failure.
- */
- gzfilebuf*
- attach(int fd,
- std::ios_base::openmode mode);
-
- /**
- * @brief Close gzipped file.
- * @return @c this on success, NULL on failure.
- */
- gzfilebuf*
- close();
-
-protected:
- /**
- * @brief Convert ios open mode int to mode string used by zlib.
- * @return True if valid mode flag combination.
- */
- bool
- open_mode(std::ios_base::openmode mode,
- char* c_mode) const;
-
- /**
- * @brief Number of characters available in stream buffer.
- * @return Number of characters.
- *
- * This indicates number of characters in get area of stream buffer.
- * These characters can be read without accessing the gzipped file.
- */
- virtual std::streamsize
- showmanyc();
-
- /**
- * @brief Fill get area from gzipped file.
- * @return First character in get area on success, EOF on error.
- *
- * This actually reads characters from gzipped file to stream
- * buffer. Always buffered.
- */
- virtual int_type
- underflow();
-
- /**
- * @brief Write put area to gzipped file.
- * @param c Extra character to add to buffer contents.
- * @return Non-EOF on success, EOF on error.
- *
- * This actually writes characters in stream buffer to
- * gzipped file. With unbuffered output this is done one
- * character at a time.
- */
- virtual int_type
- overflow(int_type c = traits_type::eof());
-
- /**
- * @brief Installs external stream buffer.
- * @param p Pointer to char buffer.
- * @param n Size of external buffer.
- * @return @c this on success, NULL on failure.
- *
- * Call setbuf(0,0) to enable unbuffered output.
- */
- virtual std::streambuf*
- setbuf(char_type* p,
- std::streamsize n);
-
- /**
- * @brief Flush stream buffer to file.
- * @return 0 on success, -1 on error.
- *
- * This calls underflow(EOF) to do the job.
- */
- virtual int
- sync();
-
-//
-// Some future enhancements
-//
-// virtual int_type uflow();
-// virtual int_type pbackfail(int_type c = traits_type::eof());
-// virtual pos_type
-// seekoff(off_type off,
-// std::ios_base::seekdir way,
-// std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
-// virtual pos_type
-// seekpos(pos_type sp,
-// std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
-
-private:
- /**
- * @brief Allocate internal buffer.
- *
- * This function is safe to call multiple times. It will ensure
- * that a proper internal buffer exists if it is required. If the
- * buffer already exists or is external, the buffer pointers will be
- * reset to their original state.
- */
- void
- enable_buffer();
-
- /**
- * @brief Destroy internal buffer.
- *
- * This function is safe to call multiple times. It will ensure
- * that the internal buffer is deallocated if it exists. In any
- * case, it will also reset the buffer pointers.
- */
- void
- disable_buffer();
-
- /**
- * Underlying file pointer.
- */
- gzFile file;
-
- /**
- * Mode in which file was opened.
- */
- std::ios_base::openmode io_mode;
-
- /**
- * @brief True if this object owns file descriptor.
- *
- * This makes the class responsible for closing the file
- * upon destruction.
- */
- bool own_fd;
-
- /**
- * @brief Stream buffer.
- *
- * For simplicity this remains allocated on the free store for the
- * entire life span of the gzfilebuf object, unless replaced by setbuf.
- */
- char_type* buffer;
-
- /**
- * @brief Stream buffer size.
- *
- * Defaults to system default buffer size (typically 8192 bytes).
- * Modified by setbuf.
- */
- std::streamsize buffer_size;
-
- /**
- * @brief True if this object owns stream buffer.
- *
- * This makes the class responsible for deleting the buffer
- * upon destruction.
- */
- bool own_buffer;
-};
-
-/*****************************************************************************/
-
-/**
- * @brief Gzipped file input stream class.
- *
- * This class implements ifstream for gzipped files. Seeking and putback
- * is not supported yet.
-*/
-class gzifstream : public std::istream
-{
-public:
- // Default constructor
- gzifstream();
-
- /**
- * @brief Construct stream on gzipped file to be opened.
- * @param name File name.
- * @param mode Open mode flags (forced to contain ios::in).
- */
- explicit
- gzifstream(const char* name,
- std::ios_base::openmode mode = std::ios_base::in);
-
- /**
- * @brief Construct stream on already open gzipped file.
- * @param fd File descriptor.
- * @param mode Open mode flags (forced to contain ios::in).
- */
- explicit
- gzifstream(int fd,
- std::ios_base::openmode mode = std::ios_base::in);
-
- /**
- * Obtain underlying stream buffer.
- */
- gzfilebuf*
- rdbuf() const
- { return const_cast<gzfilebuf*>(&sb); }
-
- /**
- * @brief Check if file is open.
- * @return True if file is open.
- */
- bool
- is_open() { return sb.is_open(); }
-
- /**
- * @brief Open gzipped file.
- * @param name File name.
- * @param mode Open mode flags (forced to contain ios::in).
- *
- * Stream will be in state good() if file opens successfully;
- * otherwise in state fail(). This differs from the behavior of
- * ifstream, which never sets the state to good() and therefore
- * won't allow you to reuse the stream for a second file unless
- * you manually clear() the state. The choice is a matter of
- * convenience.
- */
- void
- open(const char* name,
- std::ios_base::openmode mode = std::ios_base::in);
-
- /**
- * @brief Attach to already open gzipped file.
- * @param fd File descriptor.
- * @param mode Open mode flags (forced to contain ios::in).
- *
- * Stream will be in state good() if attach succeeded; otherwise
- * in state fail().
- */
- void
- attach(int fd,
- std::ios_base::openmode mode = std::ios_base::in);
-
- /**
- * @brief Close gzipped file.
- *
- * Stream will be in state fail() if close failed.
- */
- void
- close();
-
-private:
- /**
- * Underlying stream buffer.
- */
- gzfilebuf sb;
-};
-
-/*****************************************************************************/
-
-/**
- * @brief Gzipped file output stream class.
- *
- * This class implements ofstream for gzipped files. Seeking and putback
- * is not supported yet.
-*/
-class gzofstream : public std::ostream
-{
-public:
- // Default constructor
- gzofstream();
-
- /**
- * @brief Construct stream on gzipped file to be opened.
- * @param name File name.
- * @param mode Open mode flags (forced to contain ios::out).
- */
- explicit
- gzofstream(const char* name,
- std::ios_base::openmode mode = std::ios_base::out);
-
- /**
- * @brief Construct stream on already open gzipped file.
- * @param fd File descriptor.
- * @param mode Open mode flags (forced to contain ios::out).
- */
- explicit
- gzofstream(int fd,
- std::ios_base::openmode mode = std::ios_base::out);
-
- /**
- * Obtain underlying stream buffer.
- */
- gzfilebuf*
- rdbuf() const
- { return const_cast<gzfilebuf*>(&sb); }
-
- /**
- * @brief Check if file is open.
- * @return True if file is open.
- */
- bool
- is_open() { return sb.is_open(); }
-
- /**
- * @brief Open gzipped file.
- * @param name File name.
- * @param mode Open mode flags (forced to contain ios::out).
- *
- * Stream will be in state good() if file opens successfully;
- * otherwise in state fail(). This differs from the behavior of
- * ofstream, which never sets the state to good() and therefore
- * won't allow you to reuse the stream for a second file unless
- * you manually clear() the state. The choice is a matter of
- * convenience.
- */
- void
- open(const char* name,
- std::ios_base::openmode mode = std::ios_base::out);
-
- /**
- * @brief Attach to already open gzipped file.
- * @param fd File descriptor.
- * @param mode Open mode flags (forced to contain ios::out).
- *
- * Stream will be in state good() if attach succeeded; otherwise
- * in state fail().
- */
- void
- attach(int fd,
- std::ios_base::openmode mode = std::ios_base::out);
-
- /**
- * @brief Close gzipped file.
- *
- * Stream will be in state fail() if close failed.
- */
- void
- close();
-
-private:
- /**
- * Underlying stream buffer.
- */
- gzfilebuf sb;
-};
-
-/*****************************************************************************/
-
-/**
- * @brief Gzipped file output stream manipulator class.
- *
- * This class defines a two-argument manipulator for gzofstream. It is used
- * as base for the setcompression(int,int) manipulator.
-*/
-template<typename T1, typename T2>
- class gzomanip2
- {
- public:
- // Allows insertor to peek at internals
- template <typename Ta, typename Tb>
- friend gzofstream&
- operator<<(gzofstream&,
- const gzomanip2<Ta,Tb>&);
-
- // Constructor
- gzomanip2(gzofstream& (*f)(gzofstream&, T1, T2),
- T1 v1,
- T2 v2);
- private:
- // Underlying manipulator function
- gzofstream&
- (*func)(gzofstream&, T1, T2);
-
- // Arguments for manipulator function
- T1 val1;
- T2 val2;
- };
-
-/*****************************************************************************/
-
-// Manipulator function thunks through to stream buffer
-inline gzofstream&
-setcompression(gzofstream &gzs, int l, int s = Z_DEFAULT_STRATEGY)
-{
- (gzs.rdbuf())->setcompression(l, s);
- return gzs;
-}
-
-// Manipulator constructor stores arguments
-template<typename T1, typename T2>
- inline
- gzomanip2<T1,T2>::gzomanip2(gzofstream &(*f)(gzofstream &, T1, T2),
- T1 v1,
- T2 v2)
- : func(f), val1(v1), val2(v2)
- { }
-
-// Insertor applies underlying manipulator function to stream
-template<typename T1, typename T2>
- inline gzofstream&
- operator<<(gzofstream& s, const gzomanip2<T1,T2>& m)
- { return (*m.func)(s, m.val1, m.val2); }
-
-// Insert this onto stream to simplify setting of compression level
-inline gzomanip2<int,int>
-setcompression(int l, int s = Z_DEFAULT_STRATEGY)
-{ return gzomanip2<int,int>(&setcompression, l, s); }
-
-#endif // ZFSTREAM_H
+++ /dev/null
-\r
-; match.asm -- Pentium-Pro optimized version of longest_match()\r
-;\r
-; Updated for zlib 1.1.3 and converted to MASM 6.1x\r
-; Copyright (C) 2000 Dan Higdon <hdan@kinesoft.com>\r
-; and Chuck Walbourn <chuckw@kinesoft.com>\r
-; Corrections by Cosmin Truta <cosmint@cs.ubbcluj.ro>\r
-;\r
-; This is free software; you can redistribute it and/or modify it\r
-; under the terms of the GNU General Public License.\r
-\r
-; Based on match.S\r
-; Written for zlib 1.1.2\r
-; Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>\r
-;\r
-; Modified by Gilles Vollant (2005) for add gzhead and gzindex\r
-\r
- .686P\r
- .MODEL FLAT\r
-\r
-;===========================================================================\r
-; EQUATES\r
-;===========================================================================\r
-\r
-MAX_MATCH EQU 258\r
-MIN_MATCH EQU 3\r
-MIN_LOOKAHEAD EQU (MAX_MATCH + MIN_MATCH + 1)\r
-MAX_MATCH_8 EQU ((MAX_MATCH + 7) AND (NOT 7))\r
-\r
-;===========================================================================\r
-; STRUCTURES\r
-;===========================================================================\r
-\r
-; This STRUCT assumes a 4-byte alignment\r
-\r
-DEFLATE_STATE STRUCT\r
-ds_strm dd ?\r
-ds_status dd ?\r
-ds_pending_buf dd ?\r
-ds_pending_buf_size dd ?\r
-ds_pending_out dd ?\r
-ds_pending dd ?\r
-ds_wrap dd ?\r
-; gzhead and gzindex are added in zlib 1.2.2.2 (see deflate.h)\r
-ds_gzhead dd ?\r
-ds_gzindex dd ?\r
-ds_data_type db ?\r
-ds_method db ?\r
- db ? ; padding\r
- db ? ; padding\r
-ds_last_flush dd ?\r
-ds_w_size dd ? ; used\r
-ds_w_bits dd ?\r
-ds_w_mask dd ? ; used\r
-ds_window dd ? ; used\r
-ds_window_size dd ?\r
-ds_prev dd ? ; used\r
-ds_head dd ?\r
-ds_ins_h dd ?\r
-ds_hash_size dd ?\r
-ds_hash_bits dd ?\r
-ds_hash_mask dd ?\r
-ds_hash_shift dd ?\r
-ds_block_start dd ?\r
-ds_match_length dd ? ; used\r
-ds_prev_match dd ? ; used\r
-ds_match_available dd ?\r
-ds_strstart dd ? ; used\r
-ds_match_start dd ? ; used\r
-ds_lookahead dd ? ; used\r
-ds_prev_length dd ? ; used\r
-ds_max_chain_length dd ? ; used\r
-ds_max_laxy_match dd ?\r
-ds_level dd ?\r
-ds_strategy dd ?\r
-ds_good_match dd ? ; used\r
-ds_nice_match dd ? ; used\r
-\r
-; Don't need anymore of the struct for match\r
-DEFLATE_STATE ENDS\r
-\r
-;===========================================================================\r
-; CODE\r
-;===========================================================================\r
-_TEXT SEGMENT\r
-\r
-;---------------------------------------------------------------------------\r
-; match_init\r
-;---------------------------------------------------------------------------\r
- ALIGN 4\r
-PUBLIC _match_init\r
-_match_init PROC\r
- ; no initialization needed\r
- ret\r
-_match_init ENDP\r
-\r
-;---------------------------------------------------------------------------\r
-; uInt longest_match(deflate_state *deflatestate, IPos curmatch)\r
-;---------------------------------------------------------------------------\r
- ALIGN 4\r
-\r
-PUBLIC _longest_match\r
-_longest_match PROC\r
-\r
-; Since this code uses EBP for a scratch register, the stack frame must\r
-; be manually constructed and referenced relative to the ESP register.\r
-\r
-; Stack image\r
-; Variables\r
-chainlenwmask = 0 ; high word: current chain len\r
- ; low word: s->wmask\r
-window = 4 ; local copy of s->window\r
-windowbestlen = 8 ; s->window + bestlen\r
-scanend = 12 ; last two bytes of string\r
-scanstart = 16 ; first two bytes of string\r
-scanalign = 20 ; dword-misalignment of string\r
-nicematch = 24 ; a good enough match size\r
-bestlen = 28 ; size of best match so far\r
-scan = 32 ; ptr to string wanting match\r
-varsize = 36 ; number of bytes (also offset to last saved register)\r
-\r
-; Saved Registers (actually pushed into place)\r
-ebx_save = 36\r
-edi_save = 40\r
-esi_save = 44\r
-ebp_save = 48\r
-\r
-; Parameters\r
-retaddr = 52\r
-deflatestate = 56\r
-curmatch = 60\r
-\r
-; Save registers that the compiler may be using\r
- push ebp\r
- push edi\r
- push esi\r
- push ebx\r
-\r
-; Allocate local variable space\r
- sub esp,varsize\r
-\r
-; Retrieve the function arguments. ecx will hold cur_match\r
-; throughout the entire function. edx will hold the pointer to the\r
-; deflate_state structure during the function's setup (before\r
-; entering the main loop).\r
-\r
- mov edx, [esp+deflatestate]\r
-ASSUME edx:PTR DEFLATE_STATE\r
-\r
- mov ecx, [esp+curmatch]\r
-\r
-; uInt wmask = s->w_mask;\r
-; unsigned chain_length = s->max_chain_length;\r
-; if (s->prev_length >= s->good_match) {\r
-; chain_length >>= 2;\r
-; }\r
-\r
- mov eax, [edx].ds_prev_length\r
- mov ebx, [edx].ds_good_match\r
- cmp eax, ebx\r
- mov eax, [edx].ds_w_mask\r
- mov ebx, [edx].ds_max_chain_length\r
- jl SHORT LastMatchGood\r
- shr ebx, 2\r
-LastMatchGood:\r
-\r
-; chainlen is decremented once beforehand so that the function can\r
-; use the sign flag instead of the zero flag for the exit test.\r
-; It is then shifted into the high word, to make room for the wmask\r
-; value, which it will always accompany.\r
-\r
- dec ebx\r
- shl ebx, 16\r
- or ebx, eax\r
- mov [esp+chainlenwmask], ebx\r
-\r
-; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;\r
-\r
- mov eax, [edx].ds_nice_match\r
- mov ebx, [edx].ds_lookahead\r
- cmp ebx, eax\r
- jl SHORT LookaheadLess\r
- mov ebx, eax\r
-LookaheadLess:\r
- mov [esp+nicematch], ebx\r
-\r
-;/* register Bytef *scan = s->window + s->strstart; */\r
-\r
- mov esi, [edx].ds_window\r
- mov [esp+window], esi\r
- mov ebp, [edx].ds_strstart\r
- lea edi, [esi+ebp]\r
- mov [esp+scan],edi\r
-\r
-;/* Determine how many bytes the scan ptr is off from being */\r
-;/* dword-aligned. */\r
-\r
- mov eax, edi\r
- neg eax\r
- and eax, 3\r
- mov [esp+scanalign], eax\r
-\r
-;/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */\r
-;/* s->strstart - (IPos)MAX_DIST(s) : NIL; */\r
-\r
- mov eax, [edx].ds_w_size\r
- sub eax, MIN_LOOKAHEAD\r
- sub ebp, eax\r
- jg SHORT LimitPositive\r
- xor ebp, ebp\r
-LimitPositive:\r
-\r
-;/* int best_len = s->prev_length; */\r
-\r
- mov eax, [edx].ds_prev_length\r
- mov [esp+bestlen], eax\r
-\r
-;/* Store the sum of s->window + best_len in %esi locally, and in %esi. */\r
-\r
- add esi, eax\r
- mov [esp+windowbestlen], esi\r
-\r
-;/* register ush scan_start = *(ushf*)scan; */\r
-;/* register ush scan_end = *(ushf*)(scan+best_len-1); */\r
-;/* Posf *prev = s->prev; */\r
-\r
- movzx ebx, WORD PTR[edi]\r
- mov [esp+scanstart], ebx\r
- movzx ebx, WORD PTR[eax+edi-1]\r
- mov [esp+scanend], ebx\r
- mov edi, [edx].ds_prev\r
-\r
-;/* Jump into the main loop. */\r
-\r
- mov edx, [esp+chainlenwmask]\r
- jmp SHORT LoopEntry\r
-\r
-;/* do {\r
-; * match = s->window + cur_match;\r
-; * if (*(ushf*)(match+best_len-1) != scan_end ||\r
-; * *(ushf*)match != scan_start) continue;\r
-; * [...]\r
-; * } while ((cur_match = prev[cur_match & wmask]) > limit\r
-; * && --chain_length != 0);\r
-; *\r
-; * Here is the inner loop of the function. The function will spend the\r
-; * majority of its time in this loop, and majority of that time will\r
-; * be spent in the first ten instructions.\r
-; *\r
-; * Within this loop:\r
-; * %ebx = scanend\r
-; * %ecx = curmatch\r
-; * %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)\r
-; * %esi = windowbestlen - i.e., (window + bestlen)\r
-; * %edi = prev\r
-; * %ebp = limit\r
-; */\r
-\r
- ALIGN 4\r
-LookupLoop:\r
- and ecx, edx\r
- movzx ecx, WORD PTR[edi+ecx*2]\r
- cmp ecx, ebp\r
- jbe LeaveNow\r
- sub edx, 000010000H\r
- js LeaveNow\r
-\r
-LoopEntry:\r
- movzx eax, WORD PTR[esi+ecx-1]\r
- cmp eax, ebx\r
- jnz SHORT LookupLoop\r
-\r
- mov eax, [esp+window]\r
- movzx eax, WORD PTR[eax+ecx]\r
- cmp eax, [esp+scanstart]\r
- jnz SHORT LookupLoop\r
-\r
-;/* Store the current value of chainlen. */\r
-\r
- mov [esp+chainlenwmask], edx\r
-\r
-;/* Point %edi to the string under scrutiny, and %esi to the string we */\r
-;/* are hoping to match it up with. In actuality, %esi and %edi are */\r
-;/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */\r
-;/* initialized to -(MAX_MATCH_8 - scanalign). */\r
-\r
- mov esi, [esp+window]\r
- mov edi, [esp+scan]\r
- add esi, ecx\r
- mov eax, [esp+scanalign]\r
- mov edx, -MAX_MATCH_8\r
- lea edi, [edi+eax+MAX_MATCH_8]\r
- lea esi, [esi+eax+MAX_MATCH_8]\r
-\r
-;/* Test the strings for equality, 8 bytes at a time. At the end,\r
-; * adjust %edx so that it is offset to the exact byte that mismatched.\r
-; *\r
-; * We already know at this point that the first three bytes of the\r
-; * strings match each other, and they can be safely passed over before\r
-; * starting the compare loop. So what this code does is skip over 0-3\r
-; * bytes, as much as necessary in order to dword-align the %edi\r
-; * pointer. (%esi will still be misaligned three times out of four.)\r
-; *\r
-; * It should be confessed that this loop usually does not represent\r
-; * much of the total running time. Replacing it with a more\r
-; * straightforward "rep cmpsb" would not drastically degrade\r
-; * performance.\r
-; */\r
-\r
-LoopCmps:\r
- mov eax, DWORD PTR[esi+edx]\r
- xor eax, DWORD PTR[edi+edx]\r
- jnz SHORT LeaveLoopCmps\r
-\r
- mov eax, DWORD PTR[esi+edx+4]\r
- xor eax, DWORD PTR[edi+edx+4]\r
- jnz SHORT LeaveLoopCmps4\r
-\r
- add edx, 8\r
- jnz SHORT LoopCmps\r
- jmp LenMaximum\r
- ALIGN 4\r
-\r
-LeaveLoopCmps4:\r
- add edx, 4\r
-\r
-LeaveLoopCmps:\r
- test eax, 00000FFFFH\r
- jnz SHORT LenLower\r
-\r
- add edx, 2\r
- shr eax, 16\r
-\r
-LenLower:\r
- sub al, 1\r
- adc edx, 0\r
-\r
-;/* Calculate the length of the match. If it is longer than MAX_MATCH, */\r
-;/* then automatically accept it as the best possible match and leave. */\r
-\r
- lea eax, [edi+edx]\r
- mov edi, [esp+scan]\r
- sub eax, edi\r
- cmp eax, MAX_MATCH\r
- jge SHORT LenMaximum\r
-\r
-;/* If the length of the match is not longer than the best match we */\r
-;/* have so far, then forget it and return to the lookup loop. */\r
-\r
- mov edx, [esp+deflatestate]\r
- mov ebx, [esp+bestlen]\r
- cmp eax, ebx\r
- jg SHORT LongerMatch\r
- mov esi, [esp+windowbestlen]\r
- mov edi, [edx].ds_prev\r
- mov ebx, [esp+scanend]\r
- mov edx, [esp+chainlenwmask]\r
- jmp LookupLoop\r
- ALIGN 4\r
-\r
-;/* s->match_start = cur_match; */\r
-;/* best_len = len; */\r
-;/* if (len >= nice_match) break; */\r
-;/* scan_end = *(ushf*)(scan+best_len-1); */\r
-\r
-LongerMatch:\r
- mov ebx, [esp+nicematch]\r
- mov [esp+bestlen], eax\r
- mov [edx].ds_match_start, ecx\r
- cmp eax, ebx\r
- jge SHORT LeaveNow\r
- mov esi, [esp+window]\r
- add esi, eax\r
- mov [esp+windowbestlen], esi\r
- movzx ebx, WORD PTR[edi+eax-1]\r
- mov edi, [edx].ds_prev\r
- mov [esp+scanend], ebx\r
- mov edx, [esp+chainlenwmask]\r
- jmp LookupLoop\r
- ALIGN 4\r
-\r
-;/* Accept the current string, with the maximum possible length. */\r
-\r
-LenMaximum:\r
- mov edx, [esp+deflatestate]\r
- mov DWORD PTR[esp+bestlen], MAX_MATCH\r
- mov [edx].ds_match_start, ecx\r
-\r
-;/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */\r
-;/* return s->lookahead; */\r
-\r
-LeaveNow:\r
- mov edx, [esp+deflatestate]\r
- mov ebx, [esp+bestlen]\r
- mov eax, [edx].ds_lookahead\r
- cmp ebx, eax\r
- jg SHORT LookaheadRet\r
- mov eax, ebx\r
-LookaheadRet:\r
-\r
-; Restore the stack and return from whence we came.\r
-\r
- add esp, varsize\r
- pop ebx\r
- pop esi\r
- pop edi\r
- pop ebp\r
- ret\r
-\r
-_longest_match ENDP\r
-\r
-_TEXT ENDS\r
-END\r
+++ /dev/null
-ml64.exe /Flinffasx64 /c /Zi inffasx64.asm\r
-ml64.exe /Flgvmat64 /c /Zi gvmat64.asm\r
+++ /dev/null
-;uInt longest_match_x64(\r
-; deflate_state *s,\r
-; IPos cur_match); /* current match */\r
-\r
-; gvmat64.asm -- Asm portion of the optimized longest_match for 32 bits x86\r
-; Copyright (C) 1995-2005 Jean-loup Gailly, Brian Raiter and Gilles Vollant.\r
-;\r
-; File written by Gilles Vollant, by converting to assembly the longest_match\r
-; from Jean-loup Gailly in deflate.c of zLib and infoZip zip.\r
-;\r
-; and by taking inspiration on asm686 with masm, optimised assembly code\r
-; from Brian Raiter, written 1998\r
-;\r
-; http://www.zlib.net\r
-; http://www.winimage.com/zLibDll\r
-; http://www.muppetlabs.com/~breadbox/software/assembly.html\r
-;\r
-; to compile this file for infozip Zip, I use option:\r
-; ml64.exe /Flgvmat64 /c /Zi /DINFOZIP gvmat64.asm\r
-;\r
-; to compile this file for zLib, I use option:\r
-; ml64.exe /Flgvmat64 /c /Zi gvmat64.asm\r
-; Be carrefull to adapt zlib1222add below to your version of zLib\r
-; (if you use a version of zLib before 1.0.4 or after 1.2.2.2, change\r
-; value of zlib1222add later)\r
-;\r
-; This file compile with Microsoft Macro Assembler (x64) for AMD64\r
-;\r
-; ml64.exe is given with Visual Studio 2005 and Windows 2003 server DDK\r
-;\r
-; (you can get Windows 2003 server DDK with ml64 and cl for AMD64 from\r
-; http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)\r
-;\r
-\r
-\r
-;uInt longest_match(s, cur_match)\r
-; deflate_state *s;\r
-; IPos cur_match; /* current match */\r
-.code\r
-longest_match PROC\r
-\r
-\r
-;LocalVarsSize equ 88\r
- LocalVarsSize equ 72\r
-\r
-; register used : rax,rbx,rcx,rdx,rsi,rdi,r8,r9,r10,r11,r12\r
-; free register : r14,r15\r
-; register can be saved : rsp\r
-\r
- chainlenwmask equ rsp + 8 - LocalVarsSize ; high word: current chain len\r
- ; low word: s->wmask\r
-;window equ rsp + xx - LocalVarsSize ; local copy of s->window ; stored in r10\r
-;windowbestlen equ rsp + xx - LocalVarsSize ; s->window + bestlen , use r10+r11\r
-;scanstart equ rsp + xx - LocalVarsSize ; first two bytes of string ; stored in r12w\r
-;scanend equ rsp + xx - LocalVarsSize ; last two bytes of string use ebx\r
-;scanalign equ rsp + xx - LocalVarsSize ; dword-misalignment of string r13\r
-;bestlen equ rsp + xx - LocalVarsSize ; size of best match so far -> r11d\r
-;scan equ rsp + xx - LocalVarsSize ; ptr to string wanting match -> r9\r
-IFDEF INFOZIP\r
-ELSE\r
- nicematch equ (rsp + 16 - LocalVarsSize) ; a good enough match size\r
-ENDIF\r
-\r
-save_rdi equ rsp + 24 - LocalVarsSize\r
-save_rsi equ rsp + 32 - LocalVarsSize\r
-save_rbx equ rsp + 40 - LocalVarsSize\r
-save_rbp equ rsp + 48 - LocalVarsSize\r
-save_r12 equ rsp + 56 - LocalVarsSize\r
-save_r13 equ rsp + 64 - LocalVarsSize\r
-;save_r14 equ rsp + 72 - LocalVarsSize\r
-;save_r15 equ rsp + 80 - LocalVarsSize\r
-\r
-\r
-\r
-; all the +4 offsets are due to the addition of pending_buf_size (in zlib\r
-; in the deflate_state structure since the asm code was first written\r
-; (if you compile with zlib 1.0.4 or older, remove the +4).\r
-; Note : these value are good with a 8 bytes boundary pack structure\r
-\r
-\r
- MAX_MATCH equ 258\r
- MIN_MATCH equ 3\r
- MIN_LOOKAHEAD equ (MAX_MATCH+MIN_MATCH+1)\r
-\r
-\r
-;;; Offsets for fields in the deflate_state structure. These numbers\r
-;;; are calculated from the definition of deflate_state, with the\r
-;;; assumption that the compiler will dword-align the fields. (Thus,\r
-;;; changing the definition of deflate_state could easily cause this\r
-;;; program to crash horribly, without so much as a warning at\r
-;;; compile time. Sigh.)\r
-\r
-; all the +zlib1222add offsets are due to the addition of fields\r
-; in zlib in the deflate_state structure since the asm code was first written\r
-; (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").\r
-; (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").\r
-; if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").\r
-\r
-\r
-IFDEF INFOZIP\r
-\r
-_DATA SEGMENT\r
-COMM window_size:DWORD\r
-; WMask ; 7fff\r
-COMM window:BYTE:010040H\r
-COMM prev:WORD:08000H\r
-; MatchLen : unused\r
-; PrevMatch : unused\r
-COMM strstart:DWORD\r
-COMM match_start:DWORD\r
-; Lookahead : ignore\r
-COMM prev_length:DWORD ; PrevLen\r
-COMM max_chain_length:DWORD\r
-COMM good_match:DWORD\r
-COMM nice_match:DWORD\r
-prev_ad equ OFFSET prev\r
-window_ad equ OFFSET window\r
-nicematch equ nice_match\r
-_DATA ENDS\r
-WMask equ 07fffh\r
-\r
-ELSE\r
-\r
- IFNDEF zlib1222add\r
- zlib1222add equ 8\r
- ENDIF\r
-dsWSize equ 56+zlib1222add+(zlib1222add/2)\r
-dsWMask equ 64+zlib1222add+(zlib1222add/2)\r
-dsWindow equ 72+zlib1222add\r
-dsPrev equ 88+zlib1222add\r
-dsMatchLen equ 128+zlib1222add\r
-dsPrevMatch equ 132+zlib1222add\r
-dsStrStart equ 140+zlib1222add\r
-dsMatchStart equ 144+zlib1222add\r
-dsLookahead equ 148+zlib1222add\r
-dsPrevLen equ 152+zlib1222add\r
-dsMaxChainLen equ 156+zlib1222add\r
-dsGoodMatch equ 172+zlib1222add\r
-dsNiceMatch equ 176+zlib1222add\r
-\r
-window_size equ [ rcx + dsWSize]\r
-WMask equ [ rcx + dsWMask]\r
-window_ad equ [ rcx + dsWindow]\r
-prev_ad equ [ rcx + dsPrev]\r
-strstart equ [ rcx + dsStrStart]\r
-match_start equ [ rcx + dsMatchStart]\r
-Lookahead equ [ rcx + dsLookahead] ; 0ffffffffh on infozip\r
-prev_length equ [ rcx + dsPrevLen]\r
-max_chain_length equ [ rcx + dsMaxChainLen]\r
-good_match equ [ rcx + dsGoodMatch]\r
-nice_match equ [ rcx + dsNiceMatch]\r
-ENDIF\r
-\r
-; parameter 1 in r8(deflate state s), param 2 in rdx (cur match)\r
-\r
-; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and\r
-; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp\r
-;\r
-; All registers must be preserved across the call, except for\r
-; rax, rcx, rdx, r8, r9, r10, and r11, which are scratch.\r
-\r
-\r
-\r
-;;; Save registers that the compiler may be using, and adjust esp to\r
-;;; make room for our stack frame.\r
-\r
-\r
-;;; Retrieve the function arguments. r8d will hold cur_match\r
-;;; throughout the entire function. edx will hold the pointer to the\r
-;;; deflate_state structure during the function's setup (before\r
-;;; entering the main loop.\r
-\r
-; parameter 1 in rcx (deflate_state* s), param 2 in edx -> r8 (cur match)\r
-\r
-; this clear high 32 bits of r8, which can be garbage in both r8 and rdx\r
-\r
- mov [save_rdi],rdi\r
- mov [save_rsi],rsi\r
- mov [save_rbx],rbx\r
- mov [save_rbp],rbp\r
-IFDEF INFOZIP\r
- mov r8d,ecx\r
-ELSE\r
- mov r8d,edx\r
-ENDIF\r
- mov [save_r12],r12\r
- mov [save_r13],r13\r
-; mov [save_r14],r14\r
-; mov [save_r15],r15\r
-\r
-\r
-;;; uInt wmask = s->w_mask;\r
-;;; unsigned chain_length = s->max_chain_length;\r
-;;; if (s->prev_length >= s->good_match) {\r
-;;; chain_length >>= 2;\r
-;;; }\r
-\r
- mov edi, prev_length\r
- mov esi, good_match\r
- mov eax, WMask\r
- mov ebx, max_chain_length\r
- cmp edi, esi\r
- jl LastMatchGood\r
- shr ebx, 2\r
-LastMatchGood:\r
-\r
-;;; chainlen is decremented once beforehand so that the function can\r
-;;; use the sign flag instead of the zero flag for the exit test.\r
-;;; It is then shifted into the high word, to make room for the wmask\r
-;;; value, which it will always accompany.\r
-\r
- dec ebx\r
- shl ebx, 16\r
- or ebx, eax\r
-\r
-;;; on zlib only\r
-;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;\r
-\r
-IFDEF INFOZIP\r
- mov [chainlenwmask], ebx\r
-; on infozip nice_match = [nice_match]\r
-ELSE\r
- mov eax, nice_match\r
- mov [chainlenwmask], ebx\r
- mov r10d, Lookahead\r
- cmp r10d, eax\r
- cmovnl r10d, eax\r
- mov [nicematch],r10d\r
-ENDIF\r
-\r
-;;; register Bytef *scan = s->window + s->strstart;\r
- mov r10, window_ad\r
- mov ebp, strstart\r
- lea r13, [r10 + rbp]\r
-\r
-;;; Determine how many bytes the scan ptr is off from being\r
-;;; dword-aligned.\r
-\r
- mov r9,r13\r
- neg r13\r
- and r13,3\r
-\r
-;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?\r
-;;; s->strstart - (IPos)MAX_DIST(s) : NIL;\r
-IFDEF INFOZIP\r
- mov eax,07efah ; MAX_DIST = (WSIZE-MIN_LOOKAHEAD) (0x8000-(3+8+1))\r
-ELSE\r
- mov eax, window_size\r
- sub eax, MIN_LOOKAHEAD\r
-ENDIF\r
- xor edi,edi\r
- sub ebp, eax\r
-\r
- mov r11d, prev_length\r
-\r
- cmovng ebp,edi\r
-\r
-;;; int best_len = s->prev_length;\r
-\r
-\r
-;;; Store the sum of s->window + best_len in esi locally, and in esi.\r
-\r
- lea rsi,[r10+r11]\r
-\r
-;;; register ush scan_start = *(ushf*)scan;\r
-;;; register ush scan_end = *(ushf*)(scan+best_len-1);\r
-;;; Posf *prev = s->prev;\r
-\r
- movzx r12d,word ptr [r9]\r
- movzx ebx, word ptr [r9 + r11 - 1]\r
-\r
- mov rdi, prev_ad\r
-\r
-;;; Jump into the main loop.\r
-\r
- mov edx, [chainlenwmask]\r
-\r
- cmp bx,word ptr [rsi + r8 - 1]\r
- jz LookupLoopIsZero\r
-\r
-LookupLoop1:\r
- and r8d, edx\r
-\r
- movzx r8d, word ptr [rdi + r8*2]\r
- cmp r8d, ebp\r
- jbe LeaveNow\r
- sub edx, 00010000h\r
- js LeaveNow\r
-\r
-LoopEntry1:\r
- cmp bx,word ptr [rsi + r8 - 1]\r
- jz LookupLoopIsZero\r
-\r
-LookupLoop2:\r
- and r8d, edx\r
-\r
- movzx r8d, word ptr [rdi + r8*2]\r
- cmp r8d, ebp\r
- jbe LeaveNow\r
- sub edx, 00010000h\r
- js LeaveNow\r
-\r
-LoopEntry2:\r
- cmp bx,word ptr [rsi + r8 - 1]\r
- jz LookupLoopIsZero\r
-\r
-LookupLoop4:\r
- and r8d, edx\r
-\r
- movzx r8d, word ptr [rdi + r8*2]\r
- cmp r8d, ebp\r
- jbe LeaveNow\r
- sub edx, 00010000h\r
- js LeaveNow\r
-\r
-LoopEntry4:\r
-\r
- cmp bx,word ptr [rsi + r8 - 1]\r
- jnz LookupLoop1\r
- jmp LookupLoopIsZero\r
-\r
-\r
-;;; do {\r
-;;; match = s->window + cur_match;\r
-;;; if (*(ushf*)(match+best_len-1) != scan_end ||\r
-;;; *(ushf*)match != scan_start) continue;\r
-;;; [...]\r
-;;; } while ((cur_match = prev[cur_match & wmask]) > limit\r
-;;; && --chain_length != 0);\r
-;;;\r
-;;; Here is the inner loop of the function. The function will spend the\r
-;;; majority of its time in this loop, and majority of that time will\r
-;;; be spent in the first ten instructions.\r
-;;;\r
-;;; Within this loop:\r
-;;; ebx = scanend\r
-;;; r8d = curmatch\r
-;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)\r
-;;; esi = windowbestlen - i.e., (window + bestlen)\r
-;;; edi = prev\r
-;;; ebp = limit\r
-\r
-LookupLoop:\r
- and r8d, edx\r
-\r
- movzx r8d, word ptr [rdi + r8*2]\r
- cmp r8d, ebp\r
- jbe LeaveNow\r
- sub edx, 00010000h\r
- js LeaveNow\r
-\r
-LoopEntry:\r
-\r
- cmp bx,word ptr [rsi + r8 - 1]\r
- jnz LookupLoop1\r
-LookupLoopIsZero:\r
- cmp r12w, word ptr [r10 + r8]\r
- jnz LookupLoop1\r
-\r
-\r
-;;; Store the current value of chainlen.\r
- mov [chainlenwmask], edx\r
-\r
-;;; Point edi to the string under scrutiny, and esi to the string we\r
-;;; are hoping to match it up with. In actuality, esi and edi are\r
-;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is\r
-;;; initialized to -(MAX_MATCH_8 - scanalign).\r
-\r
- lea rsi,[r8+r10]\r
- mov rdx, 0fffffffffffffef8h; -(MAX_MATCH_8)\r
- lea rsi, [rsi + r13 + 0108h] ;MAX_MATCH_8]\r
- lea rdi, [r9 + r13 + 0108h] ;MAX_MATCH_8]\r
-\r
- prefetcht1 [rsi+rdx]\r
- prefetcht1 [rdi+rdx]\r
-\r
-\r
-;;; Test the strings for equality, 8 bytes at a time. At the end,\r
-;;; adjust rdx so that it is offset to the exact byte that mismatched.\r
-;;;\r
-;;; We already know at this point that the first three bytes of the\r
-;;; strings match each other, and they can be safely passed over before\r
-;;; starting the compare loop. So what this code does is skip over 0-3\r
-;;; bytes, as much as necessary in order to dword-align the edi\r
-;;; pointer. (rsi will still be misaligned three times out of four.)\r
-;;;\r
-;;; It should be confessed that this loop usually does not represent\r
-;;; much of the total running time. Replacing it with a more\r
-;;; straightforward "rep cmpsb" would not drastically degrade\r
-;;; performance.\r
-\r
-\r
-LoopCmps:\r
- mov rax, [rsi + rdx]\r
- xor rax, [rdi + rdx]\r
- jnz LeaveLoopCmps\r
-\r
- mov rax, [rsi + rdx + 8]\r
- xor rax, [rdi + rdx + 8]\r
- jnz LeaveLoopCmps8\r
-\r
-\r
- mov rax, [rsi + rdx + 8+8]\r
- xor rax, [rdi + rdx + 8+8]\r
- jnz LeaveLoopCmps16\r
-\r
- add rdx,8+8+8\r
-\r
- jmp short LoopCmps\r
-LeaveLoopCmps16: add rdx,8\r
-LeaveLoopCmps8: add rdx,8\r
-LeaveLoopCmps:\r
-\r
- test eax, 0000FFFFh\r
- jnz LenLower\r
-\r
- test eax,0ffffffffh\r
-\r
- jnz LenLower32\r
-\r
- add rdx,4\r
- shr rax,32\r
- or ax,ax\r
- jnz LenLower\r
-\r
-LenLower32:\r
- shr eax,16\r
- add rdx,2\r
-LenLower: sub al, 1\r
- adc rdx, 0\r
-;;; Calculate the length of the match. If it is longer than MAX_MATCH,\r
-;;; then automatically accept it as the best possible match and leave.\r
-\r
- lea rax, [rdi + rdx]\r
- sub rax, r9\r
- cmp eax, MAX_MATCH\r
- jge LenMaximum\r
-\r
-;;; If the length of the match is not longer than the best match we\r
-;;; have so far, then forget it and return to the lookup loop.\r
-;///////////////////////////////////\r
-\r
- cmp eax, r11d\r
- jg LongerMatch\r
-\r
- lea rsi,[r10+r11]\r
-\r
- mov rdi, prev_ad\r
- mov edx, [chainlenwmask]\r
- jmp LookupLoop\r
-\r
-;;; s->match_start = cur_match;\r
-;;; best_len = len;\r
-;;; if (len >= nice_match) break;\r
-;;; scan_end = *(ushf*)(scan+best_len-1);\r
-\r
-LongerMatch:\r
- mov r11d, eax\r
- mov match_start, r8d\r
- cmp eax, [nicematch]\r
- jge LeaveNow\r
-\r
- lea rsi,[r10+rax]\r
-\r
- movzx ebx, word ptr [r9 + rax - 1]\r
- mov rdi, prev_ad\r
- mov edx, [chainlenwmask]\r
- jmp LookupLoop\r
-\r
-;;; Accept the current string, with the maximum possible length.\r
-\r
-LenMaximum:\r
- mov r11d,MAX_MATCH\r
- mov match_start, r8d\r
-\r
-;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;\r
-;;; return s->lookahead;\r
-\r
-LeaveNow:\r
-IFDEF INFOZIP\r
- mov eax,r11d\r
-ELSE\r
- mov eax, Lookahead\r
- cmp r11d, eax\r
- cmovng eax, r11d\r
-ENDIF\r
-\r
-;;; Restore the stack and return from whence we came.\r
-\r
-\r
- mov rsi,[save_rsi]\r
- mov rdi,[save_rdi]\r
- mov rbx,[save_rbx]\r
- mov rbp,[save_rbp]\r
- mov r12,[save_r12]\r
- mov r13,[save_r13]\r
-; mov r14,[save_r14]\r
-; mov r15,[save_r15]\r
-\r
-\r
- ret 0\r
-; please don't remove this string !\r
-; Your can freely use gvmat64 in any free or commercial app\r
-; but it is far better don't remove the string in the binary!\r
- db 0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998, converted to amd 64 by Gilles Vollant 2005",0dh,0ah,0\r
-longest_match ENDP\r
-\r
-match_init PROC\r
- ret 0\r
-match_init ENDP\r
-\r
-\r
-END\r
+++ /dev/null
-/* inffas8664.c is a hand tuned assembler version of inffast.c - fast decoding\r
- * version for AMD64 on Windows using Microsoft C compiler\r
- *\r
- * Copyright (C) 1995-2003 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- *\r
- * Copyright (C) 2003 Chris Anderson <christop@charm.net>\r
- * Please use the copyright conditions above.\r
- *\r
- * 2005 - Adaptation to Microsoft C Compiler for AMD64 by Gilles Vollant\r
- *\r
- * inffas8664.c call function inffas8664fnc in inffasx64.asm\r
- * inffasx64.asm is automatically convert from AMD64 portion of inffas86.c\r
- *\r
- * Dec-29-2003 -- I added AMD64 inflate asm support. This version is also\r
- * slightly quicker on x86 systems because, instead of using rep movsb to copy\r
- * data, it uses rep movsw, which moves data in 2-byte chunks instead of single\r
- * bytes. I've tested the AMD64 code on a Fedora Core 1 + the x86_64 updates\r
- * from http://fedora.linux.duke.edu/fc1_x86_64\r
- * which is running on an Athlon 64 3000+ / Gigabyte GA-K8VT800M system with\r
- * 1GB ram. The 64-bit version is about 4% faster than the 32-bit version,\r
- * when decompressing mozilla-source-1.3.tar.gz.\r
- *\r
- * Mar-13-2003 -- Most of this is derived from inffast.S which is derived from\r
- * the gcc -S output of zlib-1.2.0/inffast.c. Zlib-1.2.0 is in beta release at\r
- * the moment. I have successfully compiled and tested this code with gcc2.96,\r
- * gcc3.2, icc5.0, msvc6.0. It is very close to the speed of inffast.S\r
- * compiled with gcc -DNO_MMX, but inffast.S is still faster on the P3 with MMX\r
- * enabled. I will attempt to merge the MMX code into this version. Newer\r
- * versions of this and inffast.S can be found at\r
- * http://www.eetbeetee.com/zlib/ and http://www.charm.net/~christop/zlib/\r
- *\r
- */\r
-\r
-#include <stdio.h>\r
-#include "zutil.h"\r
-#include "inftrees.h"\r
-#include "inflate.h"\r
-#include "inffast.h"\r
-\r
-/* Mark Adler's comments from inffast.c: */\r
-\r
-/*\r
- Decode literal, length, and distance codes and write out the resulting\r
- literal and match bytes until either not enough input or output is\r
- available, an end-of-block is encountered, or a data error is encountered.\r
- When large enough input and output buffers are supplied to inflate(), for\r
- example, a 16K input buffer and a 64K output buffer, more than 95% of the\r
- inflate execution time is spent in this routine.\r
-\r
- Entry assumptions:\r
-\r
- state->mode == LEN\r
- strm->avail_in >= 6\r
- strm->avail_out >= 258\r
- start >= strm->avail_out\r
- state->bits < 8\r
-\r
- On return, state->mode is one of:\r
-\r
- LEN -- ran out of enough output space or enough available input\r
- TYPE -- reached end of block code, inflate() to interpret next block\r
- BAD -- error in block data\r
-\r
- Notes:\r
-\r
- - The maximum input bits used by a length/distance pair is 15 bits for the\r
- length code, 5 bits for the length extra, 15 bits for the distance code,\r
- and 13 bits for the distance extra. This totals 48 bits, or six bytes.\r
- Therefore if strm->avail_in >= 6, then there is enough input to avoid\r
- checking for available input while decoding.\r
-\r
- - The maximum bytes that a single length/distance pair can output is 258\r
- bytes, which is the maximum length that can be coded. inflate_fast()\r
- requires strm->avail_out >= 258 for each loop to avoid checking for\r
- output space.\r
- */\r
-\r
-\r
-\r
- typedef struct inffast_ar {\r
-/* 64 32 x86 x86_64 */\r
-/* ar offset register */\r
-/* 0 0 */ void *esp; /* esp save */\r
-/* 8 4 */ void *ebp; /* ebp save */\r
-/* 16 8 */ unsigned char FAR *in; /* esi rsi local strm->next_in */\r
-/* 24 12 */ unsigned char FAR *last; /* r9 while in < last */\r
-/* 32 16 */ unsigned char FAR *out; /* edi rdi local strm->next_out */\r
-/* 40 20 */ unsigned char FAR *beg; /* inflate()'s init next_out */\r
-/* 48 24 */ unsigned char FAR *end; /* r10 while out < end */\r
-/* 56 28 */ unsigned char FAR *window;/* size of window, wsize!=0 */\r
-/* 64 32 */ code const FAR *lcode; /* ebp rbp local strm->lencode */\r
-/* 72 36 */ code const FAR *dcode; /* r11 local strm->distcode */\r
-/* 80 40 */ size_t /*unsigned long */hold; /* edx rdx local strm->hold */\r
-/* 88 44 */ unsigned bits; /* ebx rbx local strm->bits */\r
-/* 92 48 */ unsigned wsize; /* window size */\r
-/* 96 52 */ unsigned write; /* window write index */\r
-/*100 56 */ unsigned lmask; /* r12 mask for lcode */\r
-/*104 60 */ unsigned dmask; /* r13 mask for dcode */\r
-/*108 64 */ unsigned len; /* r14 match length */\r
-/*112 68 */ unsigned dist; /* r15 match distance */\r
-/*116 72 */ unsigned status; /* set when state chng*/\r
- } type_ar;\r
-#ifdef ASMINF\r
-\r
-void inflate_fast(strm, start)\r
-z_streamp strm;\r
-unsigned start; /* inflate()'s starting value for strm->avail_out */\r
-{\r
- struct inflate_state FAR *state;\r
- type_ar ar;\r
- void inffas8664fnc(struct inffast_ar * par);\r
-\r
- \r
-\r
-#if (defined( __GNUC__ ) && defined( __amd64__ ) && ! defined( __i386 )) || (defined(_MSC_VER) && defined(_M_AMD64))\r
-#define PAD_AVAIL_IN 6\r
-#define PAD_AVAIL_OUT 258 \r
-#else\r
-#define PAD_AVAIL_IN 5\r
-#define PAD_AVAIL_OUT 257\r
-#endif\r
-\r
- /* copy state to local variables */\r
- state = (struct inflate_state FAR *)strm->state;\r
-\r
- ar.in = strm->next_in;\r
- ar.last = ar.in + (strm->avail_in - PAD_AVAIL_IN);\r
- ar.out = strm->next_out;\r
- ar.beg = ar.out - (start - strm->avail_out);\r
- ar.end = ar.out + (strm->avail_out - PAD_AVAIL_OUT);\r
- ar.wsize = state->wsize;\r
- ar.write = state->write;\r
- ar.window = state->window;\r
- ar.hold = state->hold;\r
- ar.bits = state->bits;\r
- ar.lcode = state->lencode;\r
- ar.dcode = state->distcode;\r
- ar.lmask = (1U << state->lenbits) - 1;\r
- ar.dmask = (1U << state->distbits) - 1;\r
-\r
- /* decode literals and length/distances until end-of-block or not enough\r
- input data or output space */\r
-\r
- /* align in on 1/2 hold size boundary */\r
- while (((size_t)(void *)ar.in & (sizeof(ar.hold) / 2 - 1)) != 0) {\r
- ar.hold += (unsigned long)*ar.in++ << ar.bits;\r
- ar.bits += 8;\r
- }\r
-\r
- inffas8664fnc(&ar);\r
-\r
- if (ar.status > 1) {\r
- if (ar.status == 2)\r
- strm->msg = "invalid literal/length code";\r
- else if (ar.status == 3)\r
- strm->msg = "invalid distance code";\r
- else\r
- strm->msg = "invalid distance too far back";\r
- state->mode = BAD;\r
- }\r
- else if ( ar.status == 1 ) {\r
- state->mode = TYPE;\r
- }\r
-\r
- /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\r
- ar.len = ar.bits >> 3;\r
- ar.in -= ar.len;\r
- ar.bits -= ar.len << 3;\r
- ar.hold &= (1U << ar.bits) - 1;\r
-\r
- /* update state and return */\r
- strm->next_in = ar.in;\r
- strm->next_out = ar.out;\r
- strm->avail_in = (unsigned)(ar.in < ar.last ?\r
- PAD_AVAIL_IN + (ar.last - ar.in) :\r
- PAD_AVAIL_IN - (ar.in - ar.last));\r
- strm->avail_out = (unsigned)(ar.out < ar.end ?\r
- PAD_AVAIL_OUT + (ar.end - ar.out) :\r
- PAD_AVAIL_OUT - (ar.out - ar.end));\r
- state->hold = (unsigned long)ar.hold;\r
- state->bits = ar.bits;\r
- return;\r
-}\r
-\r
-#endif\r
+++ /dev/null
-; inffasx64.asm is a hand tuned assembler version of inffast.c - fast decoding\r
-; version for AMD64 on Windows using Microsoft C compiler\r
-;\r
-; inffasx64.asm is automatically convert from AMD64 portion of inffas86.c\r
-; inffasx64.asm is called by inffas8664.c, which contain more info.\r
-\r
-\r
-; to compile this file, I use option\r
-; ml64.exe /Flinffasx64 /c /Zi inffasx64.asm\r
-; with Microsoft Macro Assembler (x64) for AMD64\r
-;\r
-; ml64.exe is given with Visual Studio 2005, Windows 2003 server DDK\r
-;\r
-; (you can get Windows 2003 server DDK with ml64 and cl.exe for AMD64 from \r
-; http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)\r
-;\r
-\r
-.code\r
-inffas8664fnc PROC\r
-\r
-; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and\r
-; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp\r
-;\r
-; All registers must be preserved across the call, except for\r
-; rax, rcx, rdx, r8, r-9, r10, and r11, which are scratch.\r
-\r
-\r
- mov [rsp-8],rsi\r
- mov [rsp-16],rdi\r
- mov [rsp-24],r12\r
- mov [rsp-32],r13\r
- mov [rsp-40],r14\r
- mov [rsp-48],r15\r
- mov [rsp-56],rbx\r
-\r
- mov rax,rcx\r
-\r
- mov [rax+8], rbp ; /* save regs rbp and rsp */\r
- mov [rax], rsp\r
-\r
- mov rsp, rax ; /* make rsp point to &ar */\r
-\r
- mov rsi, [rsp+16] ; /* rsi = in */\r
- mov rdi, [rsp+32] ; /* rdi = out */\r
- mov r9, [rsp+24] ; /* r9 = last */\r
- mov r10, [rsp+48] ; /* r10 = end */\r
- mov rbp, [rsp+64] ; /* rbp = lcode */\r
- mov r11, [rsp+72] ; /* r11 = dcode */\r
- mov rdx, [rsp+80] ; /* rdx = hold */\r
- mov ebx, [rsp+88] ; /* ebx = bits */\r
- mov r12d, [rsp+100] ; /* r12d = lmask */\r
- mov r13d, [rsp+104] ; /* r13d = dmask */\r
- ; /* r14d = len */\r
- ; /* r15d = dist */\r
-\r
-\r
- cld\r
- cmp r10, rdi\r
- je L_one_time ; /* if only one decode left */\r
- cmp r9, rsi\r
-\r
- jne L_do_loop\r
-\r
-\r
-L_one_time:\r
- mov r8, r12 ; /* r8 = lmask */\r
- cmp bl, 32\r
- ja L_get_length_code_one_time\r
-\r
- lodsd ; /* eax = *(uint *)in++ */\r
- mov cl, bl ; /* cl = bits, needs it for shifting */\r
- add bl, 32 ; /* bits += 32 */\r
- shl rax, cl\r
- or rdx, rax ; /* hold |= *((uint *)in)++ << bits */\r
- jmp L_get_length_code_one_time\r
-\r
-ALIGN 4\r
-L_while_test:\r
- cmp r10, rdi\r
- jbe L_break_loop\r
- cmp r9, rsi\r
- jbe L_break_loop\r
-\r
-L_do_loop:\r
- mov r8, r12 ; /* r8 = lmask */\r
- cmp bl, 32\r
- ja L_get_length_code ; /* if (32 < bits) */\r
-\r
- lodsd ; /* eax = *(uint *)in++ */\r
- mov cl, bl ; /* cl = bits, needs it for shifting */\r
- add bl, 32 ; /* bits += 32 */\r
- shl rax, cl\r
- or rdx, rax ; /* hold |= *((uint *)in)++ << bits */\r
-\r
-L_get_length_code:\r
- and r8, rdx ; /* r8 &= hold */\r
- mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */\r
-\r
- mov cl, ah ; /* cl = this.bits */\r
- sub bl, ah ; /* bits -= this.bits */\r
- shr rdx, cl ; /* hold >>= this.bits */\r
-\r
- test al, al\r
- jnz L_test_for_length_base ; /* if (op != 0) 45.7% */\r
-\r
- mov r8, r12 ; /* r8 = lmask */\r
- shr eax, 16 ; /* output this.val char */\r
- stosb\r
-\r
-L_get_length_code_one_time:\r
- and r8, rdx ; /* r8 &= hold */\r
- mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */\r
-\r
-L_dolen:\r
- mov cl, ah ; /* cl = this.bits */\r
- sub bl, ah ; /* bits -= this.bits */\r
- shr rdx, cl ; /* hold >>= this.bits */\r
-\r
- test al, al\r
- jnz L_test_for_length_base ; /* if (op != 0) 45.7% */\r
-\r
- shr eax, 16 ; /* output this.val char */\r
- stosb\r
- jmp L_while_test\r
-\r
-ALIGN 4\r
-L_test_for_length_base:\r
- mov r14d, eax ; /* len = this */\r
- shr r14d, 16 ; /* len = this.val */\r
- mov cl, al\r
-\r
- test al, 16\r
- jz L_test_for_second_level_length ; /* if ((op & 16) == 0) 8% */\r
- and cl, 15 ; /* op &= 15 */\r
- jz L_decode_distance ; /* if (!op) */\r
-\r
-L_add_bits_to_len:\r
- sub bl, cl\r
- xor eax, eax\r
- inc eax\r
- shl eax, cl\r
- dec eax\r
- and eax, edx ; /* eax &= hold */\r
- shr rdx, cl\r
- add r14d, eax ; /* len += hold & mask[op] */\r
-\r
-L_decode_distance:\r
- mov r8, r13 ; /* r8 = dmask */\r
- cmp bl, 32\r
- ja L_get_distance_code ; /* if (32 < bits) */\r
-\r
- lodsd ; /* eax = *(uint *)in++ */\r
- mov cl, bl ; /* cl = bits, needs it for shifting */\r
- add bl, 32 ; /* bits += 32 */\r
- shl rax, cl\r
- or rdx, rax ; /* hold |= *((uint *)in)++ << bits */\r
-\r
-L_get_distance_code:\r
- and r8, rdx ; /* r8 &= hold */\r
- mov eax, [r11+r8*4] ; /* eax = dcode[hold & dmask] */\r
-\r
-L_dodist:\r
- mov r15d, eax ; /* dist = this */\r
- shr r15d, 16 ; /* dist = this.val */\r
- mov cl, ah\r
- sub bl, ah ; /* bits -= this.bits */\r
- shr rdx, cl ; /* hold >>= this.bits */\r
- mov cl, al ; /* cl = this.op */\r
-\r
- test al, 16 ; /* if ((op & 16) == 0) */\r
- jz L_test_for_second_level_dist\r
- and cl, 15 ; /* op &= 15 */\r
- jz L_check_dist_one\r
-\r
-L_add_bits_to_dist:\r
- sub bl, cl\r
- xor eax, eax\r
- inc eax\r
- shl eax, cl\r
- dec eax ; /* (1 << op) - 1 */\r
- and eax, edx ; /* eax &= hold */\r
- shr rdx, cl\r
- add r15d, eax ; /* dist += hold & ((1 << op) - 1) */\r
-\r
-L_check_window:\r
- mov r8, rsi ; /* save in so from can use it's reg */\r
- mov rax, rdi\r
- sub rax, [rsp+40] ; /* nbytes = out - beg */\r
-\r
- cmp eax, r15d\r
- jb L_clip_window ; /* if (dist > nbytes) 4.2% */\r
-\r
- mov ecx, r14d ; /* ecx = len */\r
- mov rsi, rdi\r
- sub rsi, r15 ; /* from = out - dist */\r
-\r
- sar ecx, 1\r
- jnc L_copy_two ; /* if len % 2 == 0 */\r
-\r
- rep movsw\r
- mov al, [rsi]\r
- mov [rdi], al\r
- inc rdi\r
-\r
- mov rsi, r8 ; /* move in back to %rsi, toss from */\r
- jmp L_while_test\r
-\r
-L_copy_two:\r
- rep movsw\r
- mov rsi, r8 ; /* move in back to %rsi, toss from */\r
- jmp L_while_test\r
-\r
-ALIGN 4\r
-L_check_dist_one:\r
- cmp r15d, 1 ; /* if dist 1, is a memset */\r
- jne L_check_window\r
- cmp [rsp+40], rdi ; /* if out == beg, outside window */\r
- je L_check_window\r
-\r
- mov ecx, r14d ; /* ecx = len */\r
- mov al, [rdi-1]\r
- mov ah, al\r
-\r
- sar ecx, 1\r
- jnc L_set_two\r
- mov [rdi], al\r
- inc rdi\r
-\r
-L_set_two:\r
- rep stosw\r
- jmp L_while_test\r
-\r
-ALIGN 4\r
-L_test_for_second_level_length:\r
- test al, 64\r
- jnz L_test_for_end_of_block ; /* if ((op & 64) != 0) */\r
-\r
- xor eax, eax\r
- inc eax\r
- shl eax, cl\r
- dec eax\r
- and eax, edx ; /* eax &= hold */\r
- add eax, r14d ; /* eax += len */\r
- mov eax, [rbp+rax*4] ; /* eax = lcode[val+(hold&mask[op])]*/\r
- jmp L_dolen\r
-\r
-ALIGN 4\r
-L_test_for_second_level_dist:\r
- test al, 64\r
- jnz L_invalid_distance_code ; /* if ((op & 64) != 0) */\r
-\r
- xor eax, eax\r
- inc eax\r
- shl eax, cl\r
- dec eax\r
- and eax, edx ; /* eax &= hold */\r
- add eax, r15d ; /* eax += dist */\r
- mov eax, [r11+rax*4] ; /* eax = dcode[val+(hold&mask[op])]*/\r
- jmp L_dodist\r
-\r
-ALIGN 4\r
-L_clip_window:\r
- mov ecx, eax ; /* ecx = nbytes */\r
- mov eax, [rsp+92] ; /* eax = wsize, prepare for dist cmp */\r
- neg ecx ; /* nbytes = -nbytes */\r
-\r
- cmp eax, r15d\r
- jb L_invalid_distance_too_far ; /* if (dist > wsize) */\r
-\r
- add ecx, r15d ; /* nbytes = dist - nbytes */\r
- cmp dword ptr [rsp+96], 0\r
- jne L_wrap_around_window ; /* if (write != 0) */\r
-\r
- mov rsi, [rsp+56] ; /* from = window */\r
- sub eax, ecx ; /* eax -= nbytes */\r
- add rsi, rax ; /* from += wsize - nbytes */\r
-\r
- mov eax, r14d ; /* eax = len */\r
- cmp r14d, ecx\r
- jbe L_do_copy ; /* if (nbytes >= len) */\r
-\r
- sub eax, ecx ; /* eax -= nbytes */\r
- rep movsb\r
- mov rsi, rdi\r
- sub rsi, r15 ; /* from = &out[ -dist ] */\r
- jmp L_do_copy\r
-\r
-ALIGN 4\r
-L_wrap_around_window:\r
- mov eax, [rsp+96] ; /* eax = write */\r
- cmp ecx, eax\r
- jbe L_contiguous_in_window ; /* if (write >= nbytes) */\r
-\r
- mov esi, [rsp+92] ; /* from = wsize */\r
- add rsi, [rsp+56] ; /* from += window */\r
- add rsi, rax ; /* from += write */\r
- sub rsi, rcx ; /* from -= nbytes */\r
- sub ecx, eax ; /* nbytes -= write */\r
-\r
- mov eax, r14d ; /* eax = len */\r
- cmp eax, ecx\r
- jbe L_do_copy ; /* if (nbytes >= len) */\r
-\r
- sub eax, ecx ; /* len -= nbytes */\r
- rep movsb\r
- mov rsi, [rsp+56] ; /* from = window */\r
- mov ecx, [rsp+96] ; /* nbytes = write */\r
- cmp eax, ecx\r
- jbe L_do_copy ; /* if (nbytes >= len) */\r
-\r
- sub eax, ecx ; /* len -= nbytes */\r
- rep movsb\r
- mov rsi, rdi\r
- sub rsi, r15 ; /* from = out - dist */\r
- jmp L_do_copy\r
-\r
-ALIGN 4\r
-L_contiguous_in_window:\r
- mov rsi, [rsp+56] ; /* rsi = window */\r
- add rsi, rax\r
- sub rsi, rcx ; /* from += write - nbytes */\r
-\r
- mov eax, r14d ; /* eax = len */\r
- cmp eax, ecx\r
- jbe L_do_copy ; /* if (nbytes >= len) */\r
-\r
- sub eax, ecx ; /* len -= nbytes */\r
- rep movsb\r
- mov rsi, rdi\r
- sub rsi, r15 ; /* from = out - dist */\r
- jmp L_do_copy ; /* if (nbytes >= len) */\r
-\r
-ALIGN 4\r
-L_do_copy:\r
- mov ecx, eax ; /* ecx = len */\r
- rep movsb\r
-\r
- mov rsi, r8 ; /* move in back to %esi, toss from */\r
- jmp L_while_test\r
-\r
-L_test_for_end_of_block:\r
- test al, 32\r
- jz L_invalid_literal_length_code\r
- mov dword ptr [rsp+116], 1\r
- jmp L_break_loop_with_status\r
-\r
-L_invalid_literal_length_code:\r
- mov dword ptr [rsp+116], 2\r
- jmp L_break_loop_with_status\r
-\r
-L_invalid_distance_code:\r
- mov dword ptr [rsp+116], 3\r
- jmp L_break_loop_with_status\r
-\r
-L_invalid_distance_too_far:\r
- mov dword ptr [rsp+116], 4\r
- jmp L_break_loop_with_status\r
-\r
-L_break_loop:\r
- mov dword ptr [rsp+116], 0\r
-\r
-L_break_loop_with_status:\r
-; /* put in, out, bits, and hold back into ar and pop esp */\r
- mov [rsp+16], rsi ; /* in */\r
- mov [rsp+32], rdi ; /* out */\r
- mov [rsp+88], ebx ; /* bits */\r
- mov [rsp+80], rdx ; /* hold */\r
-\r
- mov rax, [rsp] ; /* restore rbp and rsp */\r
- mov rbp, [rsp+8]\r
- mov rsp, rax\r
-\r
-\r
-\r
- mov rsi,[rsp-8]\r
- mov rdi,[rsp-16]\r
- mov r12,[rsp-24]\r
- mov r13,[rsp-32]\r
- mov r14,[rsp-40]\r
- mov r15,[rsp-48]\r
- mov rbx,[rsp-56]\r
- \r
- ret 0\r
-; :\r
-; : "m" (ar)\r
-; : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi",\r
-; "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"\r
-; );\r
-\r
-inffas8664fnc ENDP\r
-;_TEXT ENDS\r
-END\r
+++ /dev/null
-Summary\r
--------\r
-This directory contains ASM implementations of the functions\r
-longest_match() and inflate_fast(), for 64 bits x86 (both AMD64 and Intel EM64t),\r
-for use with Microsoft Macro Assembler (x64) for AMD64 and Microsoft C++ 64 bits.\r
-\r
-gvmat64.asm is written by Gilles Vollant (2005), by using Brian Raiter 686/32 bits\r
- assembly optimized version from Jean-loup Gailly original longest_match function\r
-\r
-inffasx64.asm and inffas8664.c were written by Chris Anderson, by optimizing\r
- original function from Mark Adler\r
-\r
-Use instructions\r
-----------------\r
-Copy these files into the zlib source directory.\r
-\r
-define ASMV and ASMINF in your project. Include inffas8664.c in your source tree,\r
-and inffasx64.obj and gvmat64.obj as object to link.\r
-\r
-\r
-Build instructions\r
-------------------\r
-run bld_64.bat with Microsoft Macro Assembler (x64) for AMD64 (ml64.exe)\r
-\r
-ml64.exe is given with Visual Studio 2005, Windows 2003 server DDK\r
-\r
-You can get Windows 2003 server DDK with ml64 and cl for AMD64 from \r
- http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)\r
+++ /dev/null
-ml /coff /Zi /c /Flgvmat32.lst gvmat32.asm \r
-ml /coff /Zi /c /Flinffas32.lst inffas32.asm \r
+++ /dev/null
-; gvmat32.asm -- Asm portion of the optimized longest_match for 32 bits x86\r
-; Copyright (C) 1995-1996 Jean-loup Gailly and Gilles Vollant.\r
-; File written by Gilles Vollant, by modifiying the longest_match\r
-; from Jean-loup Gailly in deflate.c\r
-;\r
-; http://www.zlib.net\r
-; http://www.winimage.com/zLibDll\r
-; http://www.muppetlabs.com/~breadbox/software/assembly.html\r
-;\r
-; For Visual C++ 4.x and higher and ML 6.x and higher\r
-; ml.exe is in directory \MASM611C of Win95 DDK\r
-; ml.exe is also distributed in http://www.masm32.com/masmdl.htm\r
-; and in VC++2003 toolkit at http://msdn.microsoft.com/visualc/vctoolkit2003/\r
-;\r
-; this file contain two implementation of longest_match\r
-;\r
-; longest_match_7fff : written 1996 by Gilles Vollant optimized for \r
-; first Pentium. Assume s->w_mask == 0x7fff\r
-; longest_match_686 : written by Brian raiter (1998), optimized for Pentium Pro\r
-;\r
-; for using an seembly version of longest_match, you need define ASMV in project\r
-; There is two way in using gvmat32.asm\r
-;\r
-; A) Suggested method\r
-; if you want include both longest_match_7fff and longest_match_686\r
-; compile the asm file running\r
-; ml /coff /Zi /Flgvmat32.lst /c gvmat32.asm\r
-; and include gvmat32c.c in your project\r
-; if you have an old cpu (386,486 or first Pentium) and s->w_mask==0x7fff,\r
-; longest_match_7fff will be used\r
-; if you have a more modern CPU (Pentium Pro, II and higher)\r
-; longest_match_686 will be used\r
-; on old cpu with s->w_mask!=0x7fff, longest_match_686 will be used,\r
-; but this is not a sitation you'll find often\r
-;\r
-; B) Alternative\r
-; if you are not interresed in old cpu performance and want the smaller\r
-; binaries possible\r
-;\r
-; compile the asm file running\r
-; ml /coff /Zi /c /Flgvmat32.lst /DNOOLDPENTIUMCODE gvmat32.asm\r
-; and do not include gvmat32c.c in your project (ou define also \r
-; NOOLDPENTIUMCODE)\r
-;\r
-; note : as I known, longest_match_686 is very faster than longest_match_7fff\r
-; on pentium Pro/II/III, faster (but less) in P4, but it seem\r
-; longest_match_7fff can be faster (very very litte) on AMD Athlon64/K8\r
-;\r
-; see below : zlib1222add must be adjuster if you use a zlib version < 1.2.2.2\r
-\r
-;uInt longest_match_7fff(s, cur_match)\r
-; deflate_state *s;\r
-; IPos cur_match; /* current match */\r
-\r
- NbStack equ 76\r
- cur_match equ dword ptr[esp+NbStack-0]\r
- str_s equ dword ptr[esp+NbStack-4]\r
-; 5 dword on top (ret,ebp,esi,edi,ebx)\r
- adrret equ dword ptr[esp+NbStack-8]\r
- pushebp equ dword ptr[esp+NbStack-12]\r
- pushedi equ dword ptr[esp+NbStack-16]\r
- pushesi equ dword ptr[esp+NbStack-20]\r
- pushebx equ dword ptr[esp+NbStack-24]\r
-\r
- chain_length equ dword ptr [esp+NbStack-28]\r
- limit equ dword ptr [esp+NbStack-32]\r
- best_len equ dword ptr [esp+NbStack-36]\r
- window equ dword ptr [esp+NbStack-40]\r
- prev equ dword ptr [esp+NbStack-44]\r
- scan_start equ word ptr [esp+NbStack-48]\r
- wmask equ dword ptr [esp+NbStack-52]\r
- match_start_ptr equ dword ptr [esp+NbStack-56]\r
- nice_match equ dword ptr [esp+NbStack-60]\r
- scan equ dword ptr [esp+NbStack-64]\r
-\r
- windowlen equ dword ptr [esp+NbStack-68]\r
- match_start equ dword ptr [esp+NbStack-72]\r
- strend equ dword ptr [esp+NbStack-76]\r
- NbStackAdd equ (NbStack-24)\r
-\r
- .386p\r
-\r
- name gvmatch\r
- .MODEL FLAT\r
-\r
-\r
-\r
-; all the +zlib1222add offsets are due to the addition of fields\r
-; in zlib in the deflate_state structure since the asm code was first written\r
-; (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").\r
-; (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").\r
-; if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").\r
-\r
- zlib1222add equ 8\r
-\r
-; Note : these value are good with a 8 bytes boundary pack structure\r
- dep_chain_length equ 74h+zlib1222add\r
- dep_window equ 30h+zlib1222add\r
- dep_strstart equ 64h+zlib1222add\r
- dep_prev_length equ 70h+zlib1222add\r
- dep_nice_match equ 88h+zlib1222add\r
- dep_w_size equ 24h+zlib1222add\r
- dep_prev equ 38h+zlib1222add\r
- dep_w_mask equ 2ch+zlib1222add\r
- dep_good_match equ 84h+zlib1222add\r
- dep_match_start equ 68h+zlib1222add\r
- dep_lookahead equ 6ch+zlib1222add\r
-\r
-\r
-_TEXT segment\r
-\r
-IFDEF NOUNDERLINE\r
- IFDEF NOOLDPENTIUMCODE\r
- public longest_match\r
- public match_init\r
- ELSE \r
- public longest_match_7fff\r
- public cpudetect32\r
- public longest_match_686\r
- ENDIF\r
-ELSE\r
- IFDEF NOOLDPENTIUMCODE\r
- public _longest_match\r
- public _match_init\r
- ELSE\r
- public _longest_match_7fff\r
- public _cpudetect32\r
- public _longest_match_686\r
- ENDIF\r
-ENDIF\r
-\r
- MAX_MATCH equ 258\r
- MIN_MATCH equ 3\r
- MIN_LOOKAHEAD equ (MAX_MATCH+MIN_MATCH+1)\r
-\r
-\r
-\r
-IFNDEF NOOLDPENTIUMCODE\r
-IFDEF NOUNDERLINE\r
-longest_match_7fff proc near\r
-ELSE\r
-_longest_match_7fff proc near\r
-ENDIF\r
-\r
- mov edx,[esp+4]\r
-\r
-\r
-\r
- push ebp\r
- push edi\r
- push esi\r
- push ebx\r
-\r
- sub esp,NbStackAdd\r
-\r
-; initialize or check the variables used in match.asm.\r
- mov ebp,edx\r
-\r
-; chain_length = s->max_chain_length\r
-; if (prev_length>=good_match) chain_length >>= 2\r
- mov edx,[ebp+dep_chain_length]\r
- mov ebx,[ebp+dep_prev_length]\r
- cmp [ebp+dep_good_match],ebx\r
- ja noshr\r
- shr edx,2\r
-noshr:\r
-; we increment chain_length because in the asm, the --chain_lenght is in the beginning of the loop\r
- inc edx\r
- mov edi,[ebp+dep_nice_match]\r
- mov chain_length,edx\r
- mov eax,[ebp+dep_lookahead]\r
- cmp eax,edi\r
-; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;\r
- jae nolookaheadnicematch\r
- mov edi,eax\r
-nolookaheadnicematch:\r
-; best_len = s->prev_length\r
- mov best_len,ebx\r
-\r
-; window = s->window\r
- mov esi,[ebp+dep_window]\r
- mov ecx,[ebp+dep_strstart]\r
- mov window,esi\r
-\r
- mov nice_match,edi\r
-; scan = window + strstart\r
- add esi,ecx\r
- mov scan,esi\r
-; dx = *window\r
- mov dx,word ptr [esi]\r
-; bx = *(window+best_len-1)\r
- mov bx,word ptr [esi+ebx-1]\r
- add esi,MAX_MATCH-1\r
-; scan_start = *scan\r
- mov scan_start,dx\r
-; strend = scan + MAX_MATCH-1\r
- mov strend,esi\r
-; bx = scan_end = *(window+best_len-1)\r
-\r
-; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?\r
-; s->strstart - (IPos)MAX_DIST(s) : NIL;\r
-\r
- mov esi,[ebp+dep_w_size]\r
- sub esi,MIN_LOOKAHEAD\r
-; here esi = MAX_DIST(s)\r
- sub ecx,esi\r
- ja nodist\r
- xor ecx,ecx\r
-nodist:\r
- mov limit,ecx\r
-\r
-; prev = s->prev\r
- mov edx,[ebp+dep_prev]\r
- mov prev,edx\r
-\r
-;\r
- mov edx,dword ptr [ebp+dep_match_start]\r
- mov bp,scan_start\r
- mov eax,cur_match\r
- mov match_start,edx\r
-\r
- mov edx,window\r
- mov edi,edx\r
- add edi,best_len\r
- mov esi,prev\r
- dec edi\r
-; windowlen = window + best_len -1\r
- mov windowlen,edi\r
-\r
- jmp beginloop2\r
- align 4\r
-\r
-; here, in the loop\r
-; eax = ax = cur_match\r
-; ecx = limit\r
-; bx = scan_end\r
-; bp = scan_start\r
-; edi = windowlen (window + best_len -1)\r
-; esi = prev\r
-\r
-\r
-;// here; chain_length <=16\r
-normalbeg0add16:\r
- add chain_length,16\r
- jz exitloop\r
-normalbeg0:\r
- cmp word ptr[edi+eax],bx\r
- je normalbeg2noroll\r
-rcontlabnoroll:\r
-; cur_match = prev[cur_match & wmask]\r
- and eax,7fffh\r
- mov ax,word ptr[esi+eax*2]\r
-; if cur_match > limit, go to exitloop\r
- cmp ecx,eax\r
- jnb exitloop\r
-; if --chain_length != 0, go to exitloop\r
- dec chain_length\r
- jnz normalbeg0\r
- jmp exitloop\r
-\r
-normalbeg2noroll:\r
-; if (scan_start==*(cur_match+window)) goto normalbeg2\r
- cmp bp,word ptr[edx+eax]\r
- jne rcontlabnoroll\r
- jmp normalbeg2\r
-\r
-contloop3:\r
- mov edi,windowlen\r
-\r
-; cur_match = prev[cur_match & wmask]\r
- and eax,7fffh\r
- mov ax,word ptr[esi+eax*2]\r
-; if cur_match > limit, go to exitloop\r
- cmp ecx,eax\r
-jnbexitloopshort1:\r
- jnb exitloop\r
-; if --chain_length != 0, go to exitloop\r
-\r
-\r
-; begin the main loop\r
-beginloop2:\r
- sub chain_length,16+1\r
-; if chain_length <=16, don't use the unrolled loop\r
- jna normalbeg0add16\r
-\r
-do16:\r
- cmp word ptr[edi+eax],bx\r
- je normalbeg2dc0\r
-\r
-maccn MACRO lab\r
- and eax,7fffh\r
- mov ax,word ptr[esi+eax*2]\r
- cmp ecx,eax\r
- jnb exitloop\r
- cmp word ptr[edi+eax],bx\r
- je lab\r
- ENDM\r
-\r
-rcontloop0:\r
- maccn normalbeg2dc1\r
-\r
-rcontloop1:\r
- maccn normalbeg2dc2\r
-\r
-rcontloop2:\r
- maccn normalbeg2dc3\r
-\r
-rcontloop3:\r
- maccn normalbeg2dc4\r
-\r
-rcontloop4:\r
- maccn normalbeg2dc5\r
-\r
-rcontloop5:\r
- maccn normalbeg2dc6\r
-\r
-rcontloop6:\r
- maccn normalbeg2dc7\r
-\r
-rcontloop7:\r
- maccn normalbeg2dc8\r
-\r
-rcontloop8:\r
- maccn normalbeg2dc9\r
-\r
-rcontloop9:\r
- maccn normalbeg2dc10\r
-\r
-rcontloop10:\r
- maccn short normalbeg2dc11\r
-\r
-rcontloop11:\r
- maccn short normalbeg2dc12\r
-\r
-rcontloop12:\r
- maccn short normalbeg2dc13\r
-\r
-rcontloop13:\r
- maccn short normalbeg2dc14\r
-\r
-rcontloop14:\r
- maccn short normalbeg2dc15\r
-\r
-rcontloop15:\r
- and eax,7fffh\r
- mov ax,word ptr[esi+eax*2]\r
- cmp ecx,eax\r
- jnb exitloop\r
-\r
- sub chain_length,16\r
- ja do16\r
- jmp normalbeg0add16\r
-\r
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;\r
-\r
-normbeg MACRO rcontlab,valsub\r
-; if we are here, we know that *(match+best_len-1) == scan_end\r
- cmp bp,word ptr[edx+eax]\r
-; if (match != scan_start) goto rcontlab\r
- jne rcontlab\r
-; calculate the good chain_length, and we'll compare scan and match string\r
- add chain_length,16-valsub\r
- jmp iseq\r
- ENDM\r
-\r
-\r
-normalbeg2dc11:\r
- normbeg rcontloop11,11\r
-\r
-normalbeg2dc12:\r
- normbeg short rcontloop12,12\r
-\r
-normalbeg2dc13:\r
- normbeg short rcontloop13,13\r
-\r
-normalbeg2dc14:\r
- normbeg short rcontloop14,14\r
-\r
-normalbeg2dc15:\r
- normbeg short rcontloop15,15\r
-\r
-normalbeg2dc10:\r
- normbeg rcontloop10,10\r
-\r
-normalbeg2dc9:\r
- normbeg rcontloop9,9\r
-\r
-normalbeg2dc8:\r
- normbeg rcontloop8,8\r
-\r
-normalbeg2dc7:\r
- normbeg rcontloop7,7\r
-\r
-normalbeg2dc6:\r
- normbeg rcontloop6,6\r
-\r
-normalbeg2dc5:\r
- normbeg rcontloop5,5\r
-\r
-normalbeg2dc4:\r
- normbeg rcontloop4,4\r
-\r
-normalbeg2dc3:\r
- normbeg rcontloop3,3\r
-\r
-normalbeg2dc2:\r
- normbeg rcontloop2,2\r
-\r
-normalbeg2dc1:\r
- normbeg rcontloop1,1\r
-\r
-normalbeg2dc0:\r
- normbeg rcontloop0,0\r
-\r
-\r
-; we go in normalbeg2 because *(ushf*)(match+best_len-1) == scan_end\r
-\r
-normalbeg2:\r
- mov edi,window\r
-\r
- cmp bp,word ptr[edi+eax]\r
- jne contloop3 ; if *(ushf*)match != scan_start, continue\r
-\r
-iseq:\r
-; if we are here, we know that *(match+best_len-1) == scan_end\r
-; and (match == scan_start)\r
-\r
- mov edi,edx\r
- mov esi,scan ; esi = scan\r
- add edi,eax ; edi = window + cur_match = match\r
-\r
- mov edx,[esi+3] ; compare manually dword at match+3\r
- xor edx,[edi+3] ; and scan +3\r
-\r
- jz begincompare ; if equal, go to long compare\r
-\r
-; we will determine the unmatch byte and calculate len (in esi)\r
- or dl,dl\r
- je eq1rr\r
- mov esi,3\r
- jmp trfinval\r
-eq1rr:\r
- or dx,dx\r
- je eq1\r
-\r
- mov esi,4\r
- jmp trfinval\r
-eq1:\r
- and edx,0ffffffh\r
- jz eq11\r
- mov esi,5\r
- jmp trfinval\r
-eq11:\r
- mov esi,6\r
- jmp trfinval\r
-\r
-begincompare:\r
- ; here we now scan and match begin same\r
- add edi,6\r
- add esi,6\r
- mov ecx,(MAX_MATCH-(2+4))/4 ; scan for at most MAX_MATCH bytes\r
- repe cmpsd ; loop until mismatch\r
-\r
- je trfin ; go to trfin if not unmatch\r
-; we determine the unmatch byte\r
- sub esi,4\r
- mov edx,[edi-4]\r
- xor edx,[esi]\r
-\r
- or dl,dl\r
- jnz trfin\r
- inc esi\r
-\r
- or dx,dx\r
- jnz trfin\r
- inc esi\r
-\r
- and edx,0ffffffh\r
- jnz trfin\r
- inc esi\r
-\r
-trfin:\r
- sub esi,scan ; esi = len\r
-trfinval:\r
-; here we have finised compare, and esi contain len of equal string\r
- cmp esi,best_len ; if len > best_len, go newbestlen\r
- ja short newbestlen\r
-; now we restore edx, ecx and esi, for the big loop\r
- mov esi,prev\r
- mov ecx,limit\r
- mov edx,window\r
- jmp contloop3\r
-\r
-newbestlen:\r
- mov best_len,esi ; len become best_len\r
-\r
- mov match_start,eax ; save new position as match_start\r
- cmp esi,nice_match ; if best_len >= nice_match, exit\r
- jae exitloop\r
- mov ecx,scan\r
- mov edx,window ; restore edx=window\r
- add ecx,esi\r
- add esi,edx\r
-\r
- dec esi\r
- mov windowlen,esi ; windowlen = window + best_len-1\r
- mov bx,[ecx-1] ; bx = *(scan+best_len-1) = scan_end\r
-\r
-; now we restore ecx and esi, for the big loop :\r
- mov esi,prev\r
- mov ecx,limit\r
- jmp contloop3\r
-\r
-exitloop:\r
-; exit : s->match_start=match_start\r
- mov ebx,match_start\r
- mov ebp,str_s\r
- mov ecx,best_len\r
- mov dword ptr [ebp+dep_match_start],ebx\r
- mov eax,dword ptr [ebp+dep_lookahead]\r
- cmp ecx,eax\r
- ja minexlo\r
- mov eax,ecx\r
-minexlo:\r
-; return min(best_len,s->lookahead)\r
-\r
-; restore stack and register ebx,esi,edi,ebp\r
- add esp,NbStackAdd\r
-\r
- pop ebx\r
- pop esi\r
- pop edi\r
- pop ebp\r
- ret\r
-InfoAuthor:\r
-; please don't remove this string !\r
-; Your are free use gvmat32 in any fre or commercial apps if you don't remove the string in the binary!\r
- db 0dh,0ah,"GVMat32 optimised assembly code written 1996-98 by Gilles Vollant",0dh,0ah\r
-\r
-\r
-\r
-IFDEF NOUNDERLINE\r
-longest_match_7fff endp\r
-ELSE\r
-_longest_match_7fff endp\r
-ENDIF\r
-\r
-\r
-IFDEF NOUNDERLINE\r
-cpudetect32 proc near\r
-ELSE\r
-_cpudetect32 proc near\r
-ENDIF\r
-\r
- push ebx\r
-\r
- pushfd ; push original EFLAGS\r
- pop eax ; get original EFLAGS\r
- mov ecx, eax ; save original EFLAGS\r
- xor eax, 40000h ; flip AC bit in EFLAGS\r
- push eax ; save new EFLAGS value on stack\r
- popfd ; replace current EFLAGS value\r
- pushfd ; get new EFLAGS\r
- pop eax ; store new EFLAGS in EAX\r
- xor eax, ecx ; can\92t toggle AC bit, processor=80386\r
- jz end_cpu_is_386 ; jump if 80386 processor\r
- push ecx\r
- popfd ; restore AC bit in EFLAGS first\r
-\r
- pushfd\r
- pushfd\r
- pop ecx\r
-\r
- mov eax, ecx ; get original EFLAGS\r
- xor eax, 200000h ; flip ID bit in EFLAGS\r
- push eax ; save new EFLAGS value on stack\r
- popfd ; replace current EFLAGS value\r
- pushfd ; get new EFLAGS\r
- pop eax ; store new EFLAGS in EAX\r
- popfd ; restore original EFLAGS\r
- xor eax, ecx ; can\92t toggle ID bit,\r
- je is_old_486 ; processor=old\r
-\r
- mov eax,1\r
- db 0fh,0a2h ;CPUID\r
-\r
-exitcpudetect:\r
- pop ebx\r
- ret\r
-\r
-end_cpu_is_386:\r
- mov eax,0300h\r
- jmp exitcpudetect\r
-\r
-is_old_486:\r
- mov eax,0400h\r
- jmp exitcpudetect\r
-\r
-IFDEF NOUNDERLINE\r
-cpudetect32 endp\r
-ELSE\r
-_cpudetect32 endp\r
-ENDIF\r
-ENDIF\r
-\r
-MAX_MATCH equ 258\r
-MIN_MATCH equ 3\r
-MIN_LOOKAHEAD equ (MAX_MATCH + MIN_MATCH + 1)\r
-MAX_MATCH_8_ equ ((MAX_MATCH + 7) AND 0FFF0h)\r
-\r
-\r
-;;; stack frame offsets\r
-\r
-chainlenwmask equ esp + 0 ; high word: current chain len\r
- ; low word: s->wmask\r
-window equ esp + 4 ; local copy of s->window\r
-windowbestlen equ esp + 8 ; s->window + bestlen\r
-scanstart equ esp + 16 ; first two bytes of string\r
-scanend equ esp + 12 ; last two bytes of string\r
-scanalign equ esp + 20 ; dword-misalignment of string\r
-nicematch equ esp + 24 ; a good enough match size\r
-bestlen equ esp + 28 ; size of best match so far\r
-scan equ esp + 32 ; ptr to string wanting match\r
-\r
-LocalVarsSize equ 36\r
-; saved ebx byte esp + 36\r
-; saved edi byte esp + 40\r
-; saved esi byte esp + 44\r
-; saved ebp byte esp + 48\r
-; return address byte esp + 52\r
-deflatestate equ esp + 56 ; the function arguments\r
-curmatch equ esp + 60\r
-\r
-;;; Offsets for fields in the deflate_state structure. These numbers\r
-;;; are calculated from the definition of deflate_state, with the\r
-;;; assumption that the compiler will dword-align the fields. (Thus,\r
-;;; changing the definition of deflate_state could easily cause this\r
-;;; program to crash horribly, without so much as a warning at\r
-;;; compile time. Sigh.)\r
-\r
-dsWSize equ 36+zlib1222add\r
-dsWMask equ 44+zlib1222add\r
-dsWindow equ 48+zlib1222add\r
-dsPrev equ 56+zlib1222add\r
-dsMatchLen equ 88+zlib1222add\r
-dsPrevMatch equ 92+zlib1222add\r
-dsStrStart equ 100+zlib1222add\r
-dsMatchStart equ 104+zlib1222add\r
-dsLookahead equ 108+zlib1222add\r
-dsPrevLen equ 112+zlib1222add\r
-dsMaxChainLen equ 116+zlib1222add\r
-dsGoodMatch equ 132+zlib1222add\r
-dsNiceMatch equ 136+zlib1222add\r
-\r
-\r
-;;; match.asm -- Pentium-Pro-optimized version of longest_match()\r
-;;; Written for zlib 1.1.2\r
-;;; Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>\r
-;;; You can look at http://www.muppetlabs.com/~breadbox/software/assembly.html\r
-;;;\r
-;;; This is free software; you can redistribute it and/or modify it\r
-;;; under the terms of the GNU General Public License.\r
-\r
-;GLOBAL _longest_match, _match_init\r
-\r
-\r
-;SECTION .text\r
-\r
-;;; uInt longest_match(deflate_state *deflatestate, IPos curmatch)\r
-\r
-;_longest_match:\r
-IFDEF NOOLDPENTIUMCODE\r
- IFDEF NOUNDERLINE\r
- longest_match proc near\r
- ELSE\r
- _longest_match proc near\r
- ENDIF\r
-ELSE\r
- IFDEF NOUNDERLINE\r
- longest_match_686 proc near\r
- ELSE\r
- _longest_match_686 proc near\r
- ENDIF\r
-ENDIF\r
-\r
-;;; Save registers that the compiler may be using, and adjust esp to\r
-;;; make room for our stack frame.\r
-\r
- push ebp\r
- push edi\r
- push esi\r
- push ebx\r
- sub esp, LocalVarsSize\r
-\r
-;;; Retrieve the function arguments. ecx will hold cur_match\r
-;;; throughout the entire function. edx will hold the pointer to the\r
-;;; deflate_state structure during the function's setup (before\r
-;;; entering the main loop.\r
-\r
- mov edx, [deflatestate]\r
- mov ecx, [curmatch]\r
-\r
-;;; uInt wmask = s->w_mask;\r
-;;; unsigned chain_length = s->max_chain_length;\r
-;;; if (s->prev_length >= s->good_match) {\r
-;;; chain_length >>= 2;\r
-;;; }\r
-\r
- mov eax, [edx + dsPrevLen]\r
- mov ebx, [edx + dsGoodMatch]\r
- cmp eax, ebx\r
- mov eax, [edx + dsWMask]\r
- mov ebx, [edx + dsMaxChainLen]\r
- jl LastMatchGood\r
- shr ebx, 2\r
-LastMatchGood:\r
-\r
-;;; chainlen is decremented once beforehand so that the function can\r
-;;; use the sign flag instead of the zero flag for the exit test.\r
-;;; It is then shifted into the high word, to make room for the wmask\r
-;;; value, which it will always accompany.\r
-\r
- dec ebx\r
- shl ebx, 16\r
- or ebx, eax\r
- mov [chainlenwmask], ebx\r
-\r
-;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;\r
-\r
- mov eax, [edx + dsNiceMatch]\r
- mov ebx, [edx + dsLookahead]\r
- cmp ebx, eax\r
- jl LookaheadLess\r
- mov ebx, eax\r
-LookaheadLess: mov [nicematch], ebx\r
-\r
-;;; register Bytef *scan = s->window + s->strstart;\r
-\r
- mov esi, [edx + dsWindow]\r
- mov [window], esi\r
- mov ebp, [edx + dsStrStart]\r
- lea edi, [esi + ebp]\r
- mov [scan], edi\r
-\r
-;;; Determine how many bytes the scan ptr is off from being\r
-;;; dword-aligned.\r
-\r
- mov eax, edi\r
- neg eax\r
- and eax, 3\r
- mov [scanalign], eax\r
-\r
-;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?\r
-;;; s->strstart - (IPos)MAX_DIST(s) : NIL;\r
-\r
- mov eax, [edx + dsWSize]\r
- sub eax, MIN_LOOKAHEAD\r
- sub ebp, eax\r
- jg LimitPositive\r
- xor ebp, ebp\r
-LimitPositive:\r
-\r
-;;; int best_len = s->prev_length;\r
-\r
- mov eax, [edx + dsPrevLen]\r
- mov [bestlen], eax\r
-\r
-;;; Store the sum of s->window + best_len in esi locally, and in esi.\r
-\r
- add esi, eax\r
- mov [windowbestlen], esi\r
-\r
-;;; register ush scan_start = *(ushf*)scan;\r
-;;; register ush scan_end = *(ushf*)(scan+best_len-1);\r
-;;; Posf *prev = s->prev;\r
-\r
- movzx ebx, word ptr [edi]\r
- mov [scanstart], ebx\r
- movzx ebx, word ptr [edi + eax - 1]\r
- mov [scanend], ebx\r
- mov edi, [edx + dsPrev]\r
-\r
-;;; Jump into the main loop.\r
-\r
- mov edx, [chainlenwmask]\r
- jmp short LoopEntry\r
-\r
-align 4\r
-\r
-;;; do {\r
-;;; match = s->window + cur_match;\r
-;;; if (*(ushf*)(match+best_len-1) != scan_end ||\r
-;;; *(ushf*)match != scan_start) continue;\r
-;;; [...]\r
-;;; } while ((cur_match = prev[cur_match & wmask]) > limit\r
-;;; && --chain_length != 0);\r
-;;;\r
-;;; Here is the inner loop of the function. The function will spend the\r
-;;; majority of its time in this loop, and majority of that time will\r
-;;; be spent in the first ten instructions.\r
-;;;\r
-;;; Within this loop:\r
-;;; ebx = scanend\r
-;;; ecx = curmatch\r
-;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)\r
-;;; esi = windowbestlen - i.e., (window + bestlen)\r
-;;; edi = prev\r
-;;; ebp = limit\r
-\r
-LookupLoop:\r
- and ecx, edx\r
- movzx ecx, word ptr [edi + ecx*2]\r
- cmp ecx, ebp\r
- jbe LeaveNow\r
- sub edx, 00010000h\r
- js LeaveNow\r
-LoopEntry: movzx eax, word ptr [esi + ecx - 1]\r
- cmp eax, ebx\r
- jnz LookupLoop\r
- mov eax, [window]\r
- movzx eax, word ptr [eax + ecx]\r
- cmp eax, [scanstart]\r
- jnz LookupLoop\r
-\r
-;;; Store the current value of chainlen.\r
-\r
- mov [chainlenwmask], edx\r
-\r
-;;; Point edi to the string under scrutiny, and esi to the string we\r
-;;; are hoping to match it up with. In actuality, esi and edi are\r
-;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is\r
-;;; initialized to -(MAX_MATCH_8 - scanalign).\r
-\r
- mov esi, [window]\r
- mov edi, [scan]\r
- add esi, ecx\r
- mov eax, [scanalign]\r
- mov edx, 0fffffef8h; -(MAX_MATCH_8)\r
- lea edi, [edi + eax + 0108h] ;MAX_MATCH_8]\r
- lea esi, [esi + eax + 0108h] ;MAX_MATCH_8]\r
-\r
-;;; Test the strings for equality, 8 bytes at a time. At the end,\r
-;;; adjust edx so that it is offset to the exact byte that mismatched.\r
-;;;\r
-;;; We already know at this point that the first three bytes of the\r
-;;; strings match each other, and they can be safely passed over before\r
-;;; starting the compare loop. So what this code does is skip over 0-3\r
-;;; bytes, as much as necessary in order to dword-align the edi\r
-;;; pointer. (esi will still be misaligned three times out of four.)\r
-;;;\r
-;;; It should be confessed that this loop usually does not represent\r
-;;; much of the total running time. Replacing it with a more\r
-;;; straightforward "rep cmpsb" would not drastically degrade\r
-;;; performance.\r
-\r
-LoopCmps:\r
- mov eax, [esi + edx]\r
- xor eax, [edi + edx]\r
- jnz LeaveLoopCmps\r
- mov eax, [esi + edx + 4]\r
- xor eax, [edi + edx + 4]\r
- jnz LeaveLoopCmps4\r
- add edx, 8\r
- jnz LoopCmps\r
- jmp short LenMaximum\r
-LeaveLoopCmps4: add edx, 4\r
-LeaveLoopCmps: test eax, 0000FFFFh\r
- jnz LenLower\r
- add edx, 2\r
- shr eax, 16\r
-LenLower: sub al, 1\r
- adc edx, 0\r
-\r
-;;; Calculate the length of the match. If it is longer than MAX_MATCH,\r
-;;; then automatically accept it as the best possible match and leave.\r
-\r
- lea eax, [edi + edx]\r
- mov edi, [scan]\r
- sub eax, edi\r
- cmp eax, MAX_MATCH\r
- jge LenMaximum\r
-\r
-;;; If the length of the match is not longer than the best match we\r
-;;; have so far, then forget it and return to the lookup loop.\r
-\r
- mov edx, [deflatestate]\r
- mov ebx, [bestlen]\r
- cmp eax, ebx\r
- jg LongerMatch\r
- mov esi, [windowbestlen]\r
- mov edi, [edx + dsPrev]\r
- mov ebx, [scanend]\r
- mov edx, [chainlenwmask]\r
- jmp LookupLoop\r
-\r
-;;; s->match_start = cur_match;\r
-;;; best_len = len;\r
-;;; if (len >= nice_match) break;\r
-;;; scan_end = *(ushf*)(scan+best_len-1);\r
-\r
-LongerMatch: mov ebx, [nicematch]\r
- mov [bestlen], eax\r
- mov [edx + dsMatchStart], ecx\r
- cmp eax, ebx\r
- jge LeaveNow\r
- mov esi, [window]\r
- add esi, eax\r
- mov [windowbestlen], esi\r
- movzx ebx, word ptr [edi + eax - 1]\r
- mov edi, [edx + dsPrev]\r
- mov [scanend], ebx\r
- mov edx, [chainlenwmask]\r
- jmp LookupLoop\r
-\r
-;;; Accept the current string, with the maximum possible length.\r
-\r
-LenMaximum: mov edx, [deflatestate]\r
- mov dword ptr [bestlen], MAX_MATCH\r
- mov [edx + dsMatchStart], ecx\r
-\r
-;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;\r
-;;; return s->lookahead;\r
-\r
-LeaveNow:\r
- mov edx, [deflatestate]\r
- mov ebx, [bestlen]\r
- mov eax, [edx + dsLookahead]\r
- cmp ebx, eax\r
- jg LookaheadRet\r
- mov eax, ebx\r
-LookaheadRet:\r
-\r
-;;; Restore the stack and return from whence we came.\r
-\r
- add esp, LocalVarsSize\r
- pop ebx\r
- pop esi\r
- pop edi\r
- pop ebp\r
-\r
- ret\r
-; please don't remove this string !\r
-; Your can freely use gvmat32 in any free or commercial app if you don't remove the string in the binary!\r
- db 0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998",0dh,0ah\r
-\r
-\r
-IFDEF NOOLDPENTIUMCODE\r
- IFDEF NOUNDERLINE\r
- longest_match endp\r
- ELSE\r
- _longest_match endp\r
- ENDIF\r
-\r
- IFDEF NOUNDERLINE\r
- match_init proc near\r
- ret\r
- match_init endp\r
- ELSE\r
- _match_init proc near\r
- ret\r
- _match_init endp\r
- ENDIF \r
-ELSE\r
- IFDEF NOUNDERLINE\r
- longest_match_686 endp\r
- ELSE\r
- _longest_match_686 endp\r
- ENDIF\r
-ENDIF\r
-\r
-_TEXT ends\r
-end\r
+++ /dev/null
-/* gvmat32.c -- C portion of the optimized longest_match for 32 bits x86\r
- * Copyright (C) 1995-1996 Jean-loup Gailly and Gilles Vollant.\r
- * File written by Gilles Vollant, by modifiying the longest_match\r
- * from Jean-loup Gailly in deflate.c\r
- * it prepare all parameters and call the assembly longest_match_gvasm\r
- * longest_match execute standard C code is wmask != 0x7fff\r
- * (assembly code is faster with a fixed wmask)\r
- *\r
- * Read comment at beginning of gvmat32.asm for more information\r
- */\r
-\r
-#if defined(ASMV) && (!defined(NOOLDPENTIUMCODE))\r
-#include "deflate.h"\r
-\r
-/* if your C compiler don't add underline before function name,\r
- define ADD_UNDERLINE_ASMFUNC */\r
-#ifdef ADD_UNDERLINE_ASMFUNC\r
-#define longest_match_7fff _longest_match_7fff\r
-#define longest_match_686 _longest_match_686\r
-#define cpudetect32 _cpudetect32\r
-#endif\r
-\r
-\r
-unsigned long cpudetect32();\r
-\r
-uInt longest_match_c(\r
- deflate_state *s,\r
- IPos cur_match); /* current match */\r
-\r
-\r
-uInt longest_match_7fff(\r
- deflate_state *s,\r
- IPos cur_match); /* current match */\r
-\r
-uInt longest_match_686(\r
- deflate_state *s,\r
- IPos cur_match); /* current match */\r
-\r
-\r
-static uInt iIsPPro=2;\r
-\r
-void match_init ()\r
-{\r
- iIsPPro = (((cpudetect32()/0x100)&0xf)>=6) ? 1 : 0;\r
-}\r
-\r
-uInt longest_match(\r
- deflate_state *s,\r
- IPos cur_match) /* current match */\r
-{\r
- if (iIsPPro!=0)\r
- return longest_match_686(s,cur_match);\r
-\r
- if (s->w_mask != 0x7fff)\r
- return longest_match_686(s,cur_match);\r
-\r
- /* now ((s->w_mask == 0x7fff) && (iIsPPro==0)) */\r
- return longest_match_7fff(s,cur_match);\r
-}\r
-\r
-\r
-#endif /* defined(ASMV) && (!defined(NOOLDPENTIUMCODE)) */\r
+++ /dev/null
-;/* inffas32.asm is a hand tuned assembler version of inffast.c -- fast decoding\r
-; *\r
-; * inffas32.asm is derivated from inffas86.c, with translation of assembly code\r
-; *\r
-; * Copyright (C) 1995-2003 Mark Adler\r
-; * For conditions of distribution and use, see copyright notice in zlib.h\r
-; *\r
-; * Copyright (C) 2003 Chris Anderson <christop@charm.net>\r
-; * Please use the copyright conditions above.\r
-; *\r
-; * Mar-13-2003 -- Most of this is derived from inffast.S which is derived from\r
-; * the gcc -S output of zlib-1.2.0/inffast.c. Zlib-1.2.0 is in beta release at\r
-; * the moment. I have successfully compiled and tested this code with gcc2.96,\r
-; * gcc3.2, icc5.0, msvc6.0. It is very close to the speed of inffast.S\r
-; * compiled with gcc -DNO_MMX, but inffast.S is still faster on the P3 with MMX\r
-; * enabled. I will attempt to merge the MMX code into this version. Newer\r
-; * versions of this and inffast.S can be found at\r
-; * http://www.eetbeetee.com/zlib/ and http://www.charm.net/~christop/zlib/\r
-; * \r
-; * 2005 : modification by Gilles Vollant\r
-; */\r
-; For Visual C++ 4.x and higher and ML 6.x and higher\r
-; ml.exe is in directory \MASM611C of Win95 DDK\r
-; ml.exe is also distributed in http://www.masm32.com/masmdl.htm\r
-; and in VC++2003 toolkit at http://msdn.microsoft.com/visualc/vctoolkit2003/\r
-;\r
-;\r
-; compile with command line option\r
-; ml /coff /Zi /c /Flinffas32.lst inffas32.asm\r
-\r
-; if you define NO_GZIP (see inflate.h), compile with\r
-; ml /coff /Zi /c /Flinffas32.lst /DNO_GUNZIP inffas32.asm\r
-\r
-\r
-; zlib122sup is 0 fort zlib 1.2.2.1 and lower\r
-; zlib122sup is 8 fort zlib 1.2.2.2 and more (with addition of dmax and head \r
-; in inflate_state in inflate.h)\r
-zlib1222sup equ 8\r
-\r
-\r
-IFDEF GUNZIP\r
- INFLATE_MODE_TYPE equ 11\r
- INFLATE_MODE_BAD equ 26\r
-ELSE\r
- IFNDEF NO_GUNZIP\r
- INFLATE_MODE_TYPE equ 11\r
- INFLATE_MODE_BAD equ 26\r
- ELSE\r
- INFLATE_MODE_TYPE equ 3\r
- INFLATE_MODE_BAD equ 17\r
- ENDIF\r
-ENDIF\r
-\r
-\r
-; 75 "inffast.S"\r
-;FILE "inffast.S"\r
-\r
-;;;GLOBAL _inflate_fast\r
-\r
-;;;SECTION .text\r
-\r
-\r
-\r
- .586p\r
- .mmx\r
-\r
- name inflate_fast_x86\r
- .MODEL FLAT\r
-\r
-_DATA segment\r
-inflate_fast_use_mmx:\r
- dd 1\r
-\r
-\r
-_TEXT segment\r
-PUBLIC _inflate_fast\r
-\r
-ALIGN 4\r
-_inflate_fast:\r
- jmp inflate_fast_entry\r
-\r
-\r
-\r
-ALIGN 4\r
- db 'Fast decoding Code from Chris Anderson'\r
- db 0\r
-\r
-ALIGN 4\r
-invalid_literal_length_code_msg:\r
- db 'invalid literal/length code'\r
- db 0\r
-\r
-ALIGN 4\r
-invalid_distance_code_msg:\r
- db 'invalid distance code'\r
- db 0\r
-\r
-ALIGN 4\r
-invalid_distance_too_far_msg:\r
- db 'invalid distance too far back'\r
- db 0\r
-\r
-\r
-ALIGN 4\r
-inflate_fast_mask:\r
-dd 0\r
-dd 1\r
-dd 3\r
-dd 7\r
-dd 15\r
-dd 31\r
-dd 63\r
-dd 127\r
-dd 255\r
-dd 511\r
-dd 1023\r
-dd 2047\r
-dd 4095\r
-dd 8191\r
-dd 16383\r
-dd 32767\r
-dd 65535\r
-dd 131071\r
-dd 262143\r
-dd 524287\r
-dd 1048575\r
-dd 2097151\r
-dd 4194303\r
-dd 8388607\r
-dd 16777215\r
-dd 33554431\r
-dd 67108863\r
-dd 134217727\r
-dd 268435455\r
-dd 536870911\r
-dd 1073741823\r
-dd 2147483647\r
-dd 4294967295\r
-\r
-\r
-mode_state equ 0 ;/* state->mode */\r
-wsize_state equ (32+zlib1222sup) ;/* state->wsize */\r
-write_state equ (36+4+zlib1222sup) ;/* state->write */\r
-window_state equ (40+4+zlib1222sup) ;/* state->window */\r
-hold_state equ (44+4+zlib1222sup) ;/* state->hold */\r
-bits_state equ (48+4+zlib1222sup) ;/* state->bits */\r
-lencode_state equ (64+4+zlib1222sup) ;/* state->lencode */\r
-distcode_state equ (68+4+zlib1222sup) ;/* state->distcode */\r
-lenbits_state equ (72+4+zlib1222sup) ;/* state->lenbits */\r
-distbits_state equ (76+4+zlib1222sup) ;/* state->distbits */\r
-\r
-\r
-;;SECTION .text\r
-; 205 "inffast.S"\r
-;GLOBAL inflate_fast_use_mmx\r
-\r
-;SECTION .data\r
-\r
-\r
-; GLOBAL inflate_fast_use_mmx:object\r
-;.size inflate_fast_use_mmx, 4\r
-; 226 "inffast.S"\r
-;SECTION .text\r
-\r
-ALIGN 4\r
-inflate_fast_entry:\r
- push edi\r
- push esi\r
- push ebp\r
- push ebx\r
- pushfd\r
- sub esp,64\r
- cld\r
-\r
-\r
-\r
-\r
- mov esi, [esp+88]\r
- mov edi, [esi+28]\r
-\r
-\r
-\r
-\r
-\r
-\r
-\r
- mov edx, [esi+4]\r
- mov eax, [esi+0]\r
-\r
- add edx,eax\r
- sub edx,11\r
-\r
- mov [esp+44],eax\r
- mov [esp+20],edx\r
-\r
- mov ebp, [esp+92]\r
- mov ecx, [esi+16]\r
- mov ebx, [esi+12]\r
-\r
- sub ebp,ecx\r
- neg ebp\r
- add ebp,ebx\r
-\r
- sub ecx,257\r
- add ecx,ebx\r
-\r
- mov [esp+60],ebx\r
- mov [esp+40],ebp\r
- mov [esp+16],ecx\r
-; 285 "inffast.S"\r
- mov eax, [edi+lencode_state]\r
- mov ecx, [edi+distcode_state]\r
-\r
- mov [esp+8],eax\r
- mov [esp+12],ecx\r
-\r
- mov eax,1\r
- mov ecx, [edi+lenbits_state]\r
- shl eax,cl\r
- dec eax\r
- mov [esp+0],eax\r
-\r
- mov eax,1\r
- mov ecx, [edi+distbits_state]\r
- shl eax,cl\r
- dec eax\r
- mov [esp+4],eax\r
-\r
- mov eax, [edi+wsize_state]\r
- mov ecx, [edi+write_state]\r
- mov edx, [edi+window_state]\r
-\r
- mov [esp+52],eax\r
- mov [esp+48],ecx\r
- mov [esp+56],edx\r
-\r
- mov ebp, [edi+hold_state]\r
- mov ebx, [edi+bits_state]\r
-; 321 "inffast.S"\r
- mov esi, [esp+44]\r
- mov ecx, [esp+20]\r
- cmp ecx,esi\r
- ja L_align_long\r
-\r
- add ecx,11\r
- sub ecx,esi\r
- mov eax,12\r
- sub eax,ecx\r
- lea edi, [esp+28]\r
- rep movsb\r
- mov ecx,eax\r
- xor eax,eax\r
- rep stosb\r
- lea esi, [esp+28]\r
- mov [esp+20],esi\r
- jmp L_is_aligned\r
-\r
-\r
-L_align_long:\r
- test esi,3\r
- jz L_is_aligned\r
- xor eax,eax\r
- mov al, [esi]\r
- inc esi\r
- mov ecx,ebx\r
- add ebx,8\r
- shl eax,cl\r
- or ebp,eax\r
- jmp L_align_long\r
-\r
-L_is_aligned:\r
- mov edi, [esp+60]\r
-; 366 "inffast.S"\r
-L_check_mmx:\r
- cmp dword ptr [inflate_fast_use_mmx],2\r
- je L_init_mmx\r
- ja L_do_loop\r
-\r
- push eax\r
- push ebx\r
- push ecx\r
- push edx\r
- pushfd\r
- mov eax, [esp]\r
- xor dword ptr [esp],0200000h\r
-\r
-\r
-\r
-\r
- popfd\r
- pushfd\r
- pop edx\r
- xor edx,eax\r
- jz L_dont_use_mmx\r
- xor eax,eax\r
- cpuid\r
- cmp ebx,0756e6547h\r
- jne L_dont_use_mmx\r
- cmp ecx,06c65746eh\r
- jne L_dont_use_mmx\r
- cmp edx,049656e69h\r
- jne L_dont_use_mmx\r
- mov eax,1\r
- cpuid\r
- shr eax,8\r
- and eax,15\r
- cmp eax,6\r
- jne L_dont_use_mmx\r
- test edx,0800000h\r
- jnz L_use_mmx\r
- jmp L_dont_use_mmx\r
-L_use_mmx:\r
- mov dword ptr [inflate_fast_use_mmx],2\r
- jmp L_check_mmx_pop\r
-L_dont_use_mmx:\r
- mov dword ptr [inflate_fast_use_mmx],3\r
-L_check_mmx_pop:\r
- pop edx\r
- pop ecx\r
- pop ebx\r
- pop eax\r
- jmp L_check_mmx\r
-; 426 "inffast.S"\r
-ALIGN 4\r
-L_do_loop:\r
-; 437 "inffast.S"\r
- cmp bl,15\r
- ja L_get_length_code\r
-\r
- xor eax,eax\r
- lodsw\r
- mov cl,bl\r
- add bl,16\r
- shl eax,cl\r
- or ebp,eax\r
-\r
-L_get_length_code:\r
- mov edx, [esp+0]\r
- mov ecx, [esp+8]\r
- and edx,ebp\r
- mov eax, [ecx+edx*4]\r
-\r
-L_dolen:\r
-\r
-\r
-\r
-\r
-\r
-\r
- mov cl,ah\r
- sub bl,ah\r
- shr ebp,cl\r
-\r
-\r
-\r
-\r
-\r
-\r
- test al,al\r
- jnz L_test_for_length_base\r
-\r
- shr eax,16\r
- stosb\r
-\r
-L_while_test:\r
-\r
-\r
- cmp [esp+16],edi\r
- jbe L_break_loop\r
-\r
- cmp [esp+20],esi\r
- ja L_do_loop\r
- jmp L_break_loop\r
-\r
-L_test_for_length_base:\r
-; 502 "inffast.S"\r
- mov edx,eax\r
- shr edx,16\r
- mov cl,al\r
-\r
- test al,16\r
- jz L_test_for_second_level_length\r
- and cl,15\r
- jz L_save_len\r
- cmp bl,cl\r
- jae L_add_bits_to_len\r
-\r
- mov ch,cl\r
- xor eax,eax\r
- lodsw\r
- mov cl,bl\r
- add bl,16\r
- shl eax,cl\r
- or ebp,eax\r
- mov cl,ch\r
-\r
-L_add_bits_to_len:\r
- mov eax,1\r
- shl eax,cl\r
- dec eax\r
- sub bl,cl\r
- and eax,ebp\r
- shr ebp,cl\r
- add edx,eax\r
-\r
-L_save_len:\r
- mov [esp+24],edx\r
-\r
-\r
-L_decode_distance:\r
-; 549 "inffast.S"\r
- cmp bl,15\r
- ja L_get_distance_code\r
-\r
- xor eax,eax\r
- lodsw\r
- mov cl,bl\r
- add bl,16\r
- shl eax,cl\r
- or ebp,eax\r
-\r
-L_get_distance_code:\r
- mov edx, [esp+4]\r
- mov ecx, [esp+12]\r
- and edx,ebp\r
- mov eax, [ecx+edx*4]\r
-\r
-\r
-L_dodist:\r
- mov edx,eax\r
- shr edx,16\r
- mov cl,ah\r
- sub bl,ah\r
- shr ebp,cl\r
-; 584 "inffast.S"\r
- mov cl,al\r
-\r
- test al,16\r
- jz L_test_for_second_level_dist\r
- and cl,15\r
- jz L_check_dist_one\r
- cmp bl,cl\r
- jae L_add_bits_to_dist\r
-\r
- mov ch,cl\r
- xor eax,eax\r
- lodsw\r
- mov cl,bl\r
- add bl,16\r
- shl eax,cl\r
- or ebp,eax\r
- mov cl,ch\r
-\r
-L_add_bits_to_dist:\r
- mov eax,1\r
- shl eax,cl\r
- dec eax\r
- sub bl,cl\r
- and eax,ebp\r
- shr ebp,cl\r
- add edx,eax\r
- jmp L_check_window\r
-\r
-L_check_window:\r
-; 625 "inffast.S"\r
- mov [esp+44],esi\r
- mov eax,edi\r
- sub eax, [esp+40]\r
-\r
- cmp eax,edx\r
- jb L_clip_window\r
-\r
- mov ecx, [esp+24]\r
- mov esi,edi\r
- sub esi,edx\r
-\r
- sub ecx,3\r
- mov al, [esi]\r
- mov [edi],al\r
- mov al, [esi+1]\r
- mov dl, [esi+2]\r
- add esi,3\r
- mov [edi+1],al\r
- mov [edi+2],dl\r
- add edi,3\r
- rep movsb\r
-\r
- mov esi, [esp+44]\r
- jmp L_while_test\r
-\r
-ALIGN 4\r
-L_check_dist_one:\r
- cmp edx,1\r
- jne L_check_window\r
- cmp [esp+40],edi\r
- je L_check_window\r
-\r
- dec edi\r
- mov ecx, [esp+24]\r
- mov al, [edi]\r
- sub ecx,3\r
-\r
- mov [edi+1],al\r
- mov [edi+2],al\r
- mov [edi+3],al\r
- add edi,4\r
- rep stosb\r
-\r
- jmp L_while_test\r
-\r
-ALIGN 4\r
-L_test_for_second_level_length:\r
-\r
-\r
-\r
-\r
- test al,64\r
- jnz L_test_for_end_of_block\r
-\r
- mov eax,1\r
- shl eax,cl\r
- dec eax\r
- and eax,ebp\r
- add eax,edx\r
- mov edx, [esp+8]\r
- mov eax, [edx+eax*4]\r
- jmp L_dolen\r
-\r
-ALIGN 4\r
-L_test_for_second_level_dist:\r
-\r
-\r
-\r
-\r
- test al,64\r
- jnz L_invalid_distance_code\r
-\r
- mov eax,1\r
- shl eax,cl\r
- dec eax\r
- and eax,ebp\r
- add eax,edx\r
- mov edx, [esp+12]\r
- mov eax, [edx+eax*4]\r
- jmp L_dodist\r
-\r
-ALIGN 4\r
-L_clip_window:\r
-; 721 "inffast.S"\r
- mov ecx,eax\r
- mov eax, [esp+52]\r
- neg ecx\r
- mov esi, [esp+56]\r
-\r
- cmp eax,edx\r
- jb L_invalid_distance_too_far\r
-\r
- add ecx,edx\r
- cmp dword ptr [esp+48],0\r
- jne L_wrap_around_window\r
-\r
- sub eax,ecx\r
- add esi,eax\r
-; 749 "inffast.S"\r
- mov eax, [esp+24]\r
- cmp eax,ecx\r
- jbe L_do_copy1\r
-\r
- sub eax,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,edx\r
- jmp L_do_copy1\r
-\r
- cmp eax,ecx\r
- jbe L_do_copy1\r
-\r
- sub eax,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,edx\r
- jmp L_do_copy1\r
-\r
-L_wrap_around_window:\r
-; 793 "inffast.S"\r
- mov eax, [esp+48]\r
- cmp ecx,eax\r
- jbe L_contiguous_in_window\r
-\r
- add esi, [esp+52]\r
- add esi,eax\r
- sub esi,ecx\r
- sub ecx,eax\r
-\r
-\r
- mov eax, [esp+24]\r
- cmp eax,ecx\r
- jbe L_do_copy1\r
-\r
- sub eax,ecx\r
- rep movsb\r
- mov esi, [esp+56]\r
- mov ecx, [esp+48]\r
- cmp eax,ecx\r
- jbe L_do_copy1\r
-\r
- sub eax,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,edx\r
- jmp L_do_copy1\r
-\r
-L_contiguous_in_window:\r
-; 836 "inffast.S"\r
- add esi,eax\r
- sub esi,ecx\r
-\r
-\r
- mov eax, [esp+24]\r
- cmp eax,ecx\r
- jbe L_do_copy1\r
-\r
- sub eax,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,edx\r
-\r
-L_do_copy1:\r
-; 862 "inffast.S"\r
- mov ecx,eax\r
- rep movsb\r
-\r
- mov esi, [esp+44]\r
- jmp L_while_test\r
-; 878 "inffast.S"\r
-ALIGN 4\r
-L_init_mmx:\r
- emms\r
-\r
-\r
-\r
-\r
-\r
- movd mm0,ebp\r
- mov ebp,ebx\r
-; 896 "inffast.S"\r
- movd mm4,[esp+0]\r
- movq mm3,mm4\r
- movd mm5,[esp+4]\r
- movq mm2,mm5\r
- pxor mm1,mm1\r
- mov ebx, [esp+8]\r
- jmp L_do_loop_mmx\r
-\r
-ALIGN 4\r
-L_do_loop_mmx:\r
- psrlq mm0,mm1\r
-\r
- cmp ebp,32\r
- ja L_get_length_code_mmx\r
-\r
- movd mm6,ebp\r
- movd mm7,[esi]\r
- add esi,4\r
- psllq mm7,mm6\r
- add ebp,32\r
- por mm0,mm7\r
-\r
-L_get_length_code_mmx:\r
- pand mm4,mm0\r
- movd eax,mm4\r
- movq mm4,mm3\r
- mov eax, [ebx+eax*4]\r
-\r
-L_dolen_mmx:\r
- movzx ecx,ah\r
- movd mm1,ecx\r
- sub ebp,ecx\r
-\r
- test al,al\r
- jnz L_test_for_length_base_mmx\r
-\r
- shr eax,16\r
- stosb\r
-\r
-L_while_test_mmx:\r
-\r
-\r
- cmp [esp+16],edi\r
- jbe L_break_loop\r
-\r
- cmp [esp+20],esi\r
- ja L_do_loop_mmx\r
- jmp L_break_loop\r
-\r
-L_test_for_length_base_mmx:\r
-\r
- mov edx,eax\r
- shr edx,16\r
-\r
- test al,16\r
- jz L_test_for_second_level_length_mmx\r
- and eax,15\r
- jz L_decode_distance_mmx\r
-\r
- psrlq mm0,mm1\r
- movd mm1,eax\r
- movd ecx,mm0\r
- sub ebp,eax\r
- and ecx, [inflate_fast_mask+eax*4]\r
- add edx,ecx\r
-\r
-L_decode_distance_mmx:\r
- psrlq mm0,mm1\r
-\r
- cmp ebp,32\r
- ja L_get_dist_code_mmx\r
-\r
- movd mm6,ebp\r
- movd mm7,[esi]\r
- add esi,4\r
- psllq mm7,mm6\r
- add ebp,32\r
- por mm0,mm7\r
-\r
-L_get_dist_code_mmx:\r
- mov ebx, [esp+12]\r
- pand mm5,mm0\r
- movd eax,mm5\r
- movq mm5,mm2\r
- mov eax, [ebx+eax*4]\r
-\r
-L_dodist_mmx:\r
-\r
- movzx ecx,ah\r
- mov ebx,eax\r
- shr ebx,16\r
- sub ebp,ecx\r
- movd mm1,ecx\r
-\r
- test al,16\r
- jz L_test_for_second_level_dist_mmx\r
- and eax,15\r
- jz L_check_dist_one_mmx\r
-\r
-L_add_bits_to_dist_mmx:\r
- psrlq mm0,mm1\r
- movd mm1,eax\r
- movd ecx,mm0\r
- sub ebp,eax\r
- and ecx, [inflate_fast_mask+eax*4]\r
- add ebx,ecx\r
-\r
-L_check_window_mmx:\r
- mov [esp+44],esi\r
- mov eax,edi\r
- sub eax, [esp+40]\r
-\r
- cmp eax,ebx\r
- jb L_clip_window_mmx\r
-\r
- mov ecx,edx\r
- mov esi,edi\r
- sub esi,ebx\r
-\r
- sub ecx,3\r
- mov al, [esi]\r
- mov [edi],al\r
- mov al, [esi+1]\r
- mov dl, [esi+2]\r
- add esi,3\r
- mov [edi+1],al\r
- mov [edi+2],dl\r
- add edi,3\r
- rep movsb\r
-\r
- mov esi, [esp+44]\r
- mov ebx, [esp+8]\r
- jmp L_while_test_mmx\r
-\r
-ALIGN 4\r
-L_check_dist_one_mmx:\r
- cmp ebx,1\r
- jne L_check_window_mmx\r
- cmp [esp+40],edi\r
- je L_check_window_mmx\r
-\r
- dec edi\r
- mov ecx,edx\r
- mov al, [edi]\r
- sub ecx,3\r
-\r
- mov [edi+1],al\r
- mov [edi+2],al\r
- mov [edi+3],al\r
- add edi,4\r
- rep stosb\r
-\r
- mov ebx, [esp+8]\r
- jmp L_while_test_mmx\r
-\r
-ALIGN 4\r
-L_test_for_second_level_length_mmx:\r
- test al,64\r
- jnz L_test_for_end_of_block\r
-\r
- and eax,15\r
- psrlq mm0,mm1\r
- movd ecx,mm0\r
- and ecx, [inflate_fast_mask+eax*4]\r
- add ecx,edx\r
- mov eax, [ebx+ecx*4]\r
- jmp L_dolen_mmx\r
-\r
-ALIGN 4\r
-L_test_for_second_level_dist_mmx:\r
- test al,64\r
- jnz L_invalid_distance_code\r
-\r
- and eax,15\r
- psrlq mm0,mm1\r
- movd ecx,mm0\r
- and ecx, [inflate_fast_mask+eax*4]\r
- mov eax, [esp+12]\r
- add ecx,ebx\r
- mov eax, [eax+ecx*4]\r
- jmp L_dodist_mmx\r
-\r
-ALIGN 4\r
-L_clip_window_mmx:\r
-\r
- mov ecx,eax\r
- mov eax, [esp+52]\r
- neg ecx\r
- mov esi, [esp+56]\r
-\r
- cmp eax,ebx\r
- jb L_invalid_distance_too_far\r
-\r
- add ecx,ebx\r
- cmp dword ptr [esp+48],0\r
- jne L_wrap_around_window_mmx\r
-\r
- sub eax,ecx\r
- add esi,eax\r
-\r
- cmp edx,ecx\r
- jbe L_do_copy1_mmx\r
-\r
- sub edx,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,ebx\r
- jmp L_do_copy1_mmx\r
-\r
- cmp edx,ecx\r
- jbe L_do_copy1_mmx\r
-\r
- sub edx,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,ebx\r
- jmp L_do_copy1_mmx\r
-\r
-L_wrap_around_window_mmx:\r
-\r
- mov eax, [esp+48]\r
- cmp ecx,eax\r
- jbe L_contiguous_in_window_mmx\r
-\r
- add esi, [esp+52]\r
- add esi,eax\r
- sub esi,ecx\r
- sub ecx,eax\r
-\r
-\r
- cmp edx,ecx\r
- jbe L_do_copy1_mmx\r
-\r
- sub edx,ecx\r
- rep movsb\r
- mov esi, [esp+56]\r
- mov ecx, [esp+48]\r
- cmp edx,ecx\r
- jbe L_do_copy1_mmx\r
-\r
- sub edx,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,ebx\r
- jmp L_do_copy1_mmx\r
-\r
-L_contiguous_in_window_mmx:\r
-\r
- add esi,eax\r
- sub esi,ecx\r
-\r
-\r
- cmp edx,ecx\r
- jbe L_do_copy1_mmx\r
-\r
- sub edx,ecx\r
- rep movsb\r
- mov esi,edi\r
- sub esi,ebx\r
-\r
-L_do_copy1_mmx:\r
-\r
-\r
- mov ecx,edx\r
- rep movsb\r
-\r
- mov esi, [esp+44]\r
- mov ebx, [esp+8]\r
- jmp L_while_test_mmx\r
-; 1174 "inffast.S"\r
-L_invalid_distance_code:\r
-\r
-\r
-\r
-\r
-\r
- mov ecx, invalid_distance_code_msg\r
- mov edx,INFLATE_MODE_BAD\r
- jmp L_update_stream_state\r
-\r
-L_test_for_end_of_block:\r
-\r
-\r
-\r
-\r
-\r
- test al,32\r
- jz L_invalid_literal_length_code\r
-\r
- mov ecx,0\r
- mov edx,INFLATE_MODE_TYPE\r
- jmp L_update_stream_state\r
-\r
-L_invalid_literal_length_code:\r
-\r
-\r
-\r
-\r
-\r
- mov ecx, invalid_literal_length_code_msg\r
- mov edx,INFLATE_MODE_BAD\r
- jmp L_update_stream_state\r
-\r
-L_invalid_distance_too_far:\r
-\r
-\r
-\r
- mov esi, [esp+44]\r
- mov ecx, invalid_distance_too_far_msg\r
- mov edx,INFLATE_MODE_BAD\r
- jmp L_update_stream_state\r
-\r
-L_update_stream_state:\r
-\r
- mov eax, [esp+88]\r
- test ecx,ecx\r
- jz L_skip_msg\r
- mov [eax+24],ecx\r
-L_skip_msg:\r
- mov eax, [eax+28]\r
- mov [eax+mode_state],edx\r
- jmp L_break_loop\r
-\r
-ALIGN 4\r
-L_break_loop:\r
-; 1243 "inffast.S"\r
- cmp dword ptr [inflate_fast_use_mmx],2\r
- jne L_update_next_in\r
-\r
-\r
-\r
- mov ebx,ebp\r
-\r
-L_update_next_in:\r
-; 1266 "inffast.S"\r
- mov eax, [esp+88]\r
- mov ecx,ebx\r
- mov edx, [eax+28]\r
- shr ecx,3\r
- sub esi,ecx\r
- shl ecx,3\r
- sub ebx,ecx\r
- mov [eax+12],edi\r
- mov [edx+bits_state],ebx\r
- mov ecx,ebx\r
-\r
- lea ebx, [esp+28]\r
- cmp [esp+20],ebx\r
- jne L_buf_not_used\r
-\r
- sub esi,ebx\r
- mov ebx, [eax+0]\r
- mov [esp+20],ebx\r
- add esi,ebx\r
- mov ebx, [eax+4]\r
- sub ebx,11\r
- add [esp+20],ebx\r
-\r
-L_buf_not_used:\r
- mov [eax+0],esi\r
-\r
- mov ebx,1\r
- shl ebx,cl\r
- dec ebx\r
-\r
-\r
-\r
-\r
-\r
- cmp dword ptr [inflate_fast_use_mmx],2\r
- jne L_update_hold\r
-\r
-\r
-\r
- psrlq mm0,mm1\r
- movd ebp,mm0\r
-\r
- emms\r
-\r
-L_update_hold:\r
-\r
-\r
-\r
- and ebp,ebx\r
- mov [edx+hold_state],ebp\r
-\r
-\r
-\r
-\r
- mov ebx, [esp+20]\r
- cmp ebx,esi\r
- jbe L_last_is_smaller\r
-\r
- sub ebx,esi\r
- add ebx,11\r
- mov [eax+4],ebx\r
- jmp L_fixup_out\r
-L_last_is_smaller:\r
- sub esi,ebx\r
- neg esi\r
- add esi,11\r
- mov [eax+4],esi\r
-\r
-\r
-\r
-\r
-L_fixup_out:\r
-\r
- mov ebx, [esp+16]\r
- cmp ebx,edi\r
- jbe L_end_is_smaller\r
-\r
- sub ebx,edi\r
- add ebx,257\r
- mov [eax+16],ebx\r
- jmp L_done\r
-L_end_is_smaller:\r
- sub edi,ebx\r
- neg edi\r
- add edi,257\r
- mov [eax+16],edi\r
-\r
-\r
-\r
-\r
-\r
-L_done:\r
- add esp,64\r
- popfd\r
- pop ebx\r
- pop ebp\r
- pop esi\r
- pop edi\r
- ret\r
-\r
-_TEXT ends\r
-end\r
+++ /dev/null
-cl /DASMV /I..\.. /O2 /c gvmat32c.c\r
-ml /coff /Zi /c /Flgvmat32.lst gvmat32.asm\r
-ml /coff /Zi /c /Flinffas32.lst inffas32.asm\r
+++ /dev/null
-
-Summary
--------
-This directory contains ASM implementations of the functions
-longest_match() and inflate_fast().
-
-
-Use instructions
-----------------
-Copy these files into the zlib source directory, then run the
-appropriate makefile, as suggested below.
-
-
-Build instructions
-------------------
-* With Microsoft C and MASM:
-nmake -f win32/Makefile.msc LOC="-DASMV -DASMINF" OBJA="gvmat32c.obj gvmat32.obj inffas32.obj"
-
-* With Borland C and TASM:
-make -f win32/Makefile.bor LOCAL_ZLIB="-DASMV -DASMINF" OBJA="gvmat32c.obj gvmat32.obj inffas32.obj" OBJPA="+gvmat32c.obj+gvmat32.obj+inffas32.obj"
-
+++ /dev/null
-Change in 1.01e (12 feb 05)
-- Fix in zipOpen2 for globalcomment (Rolf Kalbermatter)
-- Fix possible memory leak in unzip.c (Zoran Stevanovic)
-
-Change in 1.01b (20 may 04)
-- Integrate patch from Debian package (submited by Mark Brown)
-- Add tools mztools from Xavier Roche
-
-Change in 1.01 (8 may 04)
-- fix buffer overrun risk in unzip.c (Xavier Roche)
-- fix a minor buffer insecurity in minizip.c (Mike Whittaker)
-
-Change in 1.00: (10 sept 03)
-- rename to 1.00
-- cosmetic code change
-
-Change in 0.22: (19 May 03)
-- crypting support (unless you define NOCRYPT)
-- append file in existing zipfile
-
-Change in 0.21: (10 Mar 03)
-- bug fixes
-
-Change in 0.17: (27 Jan 02)
-- bug fixes
-
-Change in 0.16: (19 Jan 02)
-- Support of ioapi for virtualize zip file access
-
-Change in 0.15: (19 Mar 98)
-- fix memory leak in minizip.c
-
-Change in 0.14: (10 Mar 98)
-- fix bugs in minizip.c sample for zipping big file
-- fix problem in month in date handling
-- fix bug in unzlocal_GetCurrentFileInfoInternal in unzip.c for
- comment handling
-
-Change in 0.13: (6 Mar 98)
-- fix bugs in zip.c
-- add real minizip sample
-
-Change in 0.12: (4 Mar 98)
-- add zip.c and zip.h for creates .zip file
-- fix change_file_date in miniunz.c for Unix (Jean-loup Gailly)
-- fix miniunz.c for file without specific record for directory
-
-Change in 0.11: (3 Mar 98)
-- fix bug in unzGetCurrentFileInfo for get extra field and comment
-- enhance miniunz sample, remove the bad unztst.c sample
-
-Change in 0.10: (2 Mar 98)
-- fix bug in unzReadCurrentFile
-- rename unzip* to unz* function and structure
-- remove Windows-like hungary notation variable name
-- modify some structure in unzip.h
-- add somes comment in source
-- remove unzipGetcCurrentFile function
-- replace ZUNZEXPORT by ZEXPORT
-- add unzGetLocalExtrafield for get the local extrafield info
-- add a new sample, miniunz.c
-
-Change in 0.4: (25 Feb 98)
-- suppress the type unzipFileInZip.
- Only on file in the zipfile can be open at the same time
-- fix somes typo in code
-- added tm_unz structure in unzip_file_info (date/time in readable format)
+++ /dev/null
-CC=cc
-CFLAGS=-O -I../..
-
-UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a
-ZIP_OBJS = minizip.o zip.o ioapi.o ../../libz.a
-
-.c.o:
- $(CC) -c $(CFLAGS) $*.c
-
-all: miniunz minizip
-
-miniunz: $(UNZ_OBJS)
- $(CC) $(CFLAGS) -o $@ $(UNZ_OBJS)
-
-minizip: $(ZIP_OBJS)
- $(CC) $(CFLAGS) -o $@ $(ZIP_OBJS)
-
-test: miniunz minizip
- ./minizip test readme.txt
- ./miniunz -l test.zip
- mv readme.txt readme.old
- ./miniunz test.zip
-
-clean:
- /bin/rm -f *.o *~ minizip miniunz
+++ /dev/null
-/* crypt.h -- base code for crypt/uncrypt ZIPfile
-
-
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-
- This code is a modified version of crypting code in Infozip distribution
-
- The encryption/decryption parts of this source code (as opposed to the
- non-echoing password parts) were originally written in Europe. The
- whole source package can be freely distributed, including from the USA.
- (Prior to January 2000, re-export from the US was a violation of US law.)
-
- This encryption code is a direct transcription of the algorithm from
- Roger Schlafly, described by Phil Katz in the file appnote.txt. This
- file (appnote.txt) is distributed with the PKZIP program (even in the
- version without encryption capabilities).
-
- If you don't need crypting in your application, just define symbols
- NOCRYPT and NOUNCRYPT.
-
- This code support the "Traditional PKWARE Encryption".
-
- The new AES encryption added on Zip format by Winzip (see the page
- http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong
- Encryption is not supported.
-*/
-
-#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
-
-/***********************************************************************
- * Return the next byte in the pseudo-random sequence
- */
-static int decrypt_byte(unsigned long* pkeys, const unsigned long* pcrc_32_tab)
-{
- unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an
- * unpredictable manner on 16-bit systems; not a problem
- * with any known compiler so far, though */
-
- temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2;
- return (int)(((temp * (temp ^ 1)) >> 8) & 0xff);
-}
-
-/***********************************************************************
- * Update the encryption keys with the next byte of plain text
- */
-static int update_keys(unsigned long* pkeys,const unsigned long* pcrc_32_tab,int c)
-{
- (*(pkeys+0)) = CRC32((*(pkeys+0)), c);
- (*(pkeys+1)) += (*(pkeys+0)) & 0xff;
- (*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
- {
- register int keyshift = (int)((*(pkeys+1)) >> 24);
- (*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift);
- }
- return c;
-}
-
-
-/***********************************************************************
- * Initialize the encryption keys and the random header according to
- * the given password.
- */
-static void init_keys(const char* passwd,unsigned long* pkeys,const unsigned long* pcrc_32_tab)
-{
- *(pkeys+0) = 305419896L;
- *(pkeys+1) = 591751049L;
- *(pkeys+2) = 878082192L;
- while (*passwd != '\0') {
- update_keys(pkeys,pcrc_32_tab,(int)*passwd);
- passwd++;
- }
-}
-
-#define zdecode(pkeys,pcrc_32_tab,c) \
- (update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))
-
-#define zencode(pkeys,pcrc_32_tab,c,t) \
- (t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c))
-
-#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED
-
-#define RAND_HEAD_LEN 12
- /* "last resort" source for second part of crypt seed pattern */
-# ifndef ZCR_SEED2
-# define ZCR_SEED2 3141592654UL /* use PI as default pattern */
-# endif
-
-static int crypthead(passwd, buf, bufSize, pkeys, pcrc_32_tab, crcForCrypting)
- const char *passwd; /* password string */
- unsigned char *buf; /* where to write header */
- int bufSize;
- unsigned long* pkeys;
- const unsigned long* pcrc_32_tab;
- unsigned long crcForCrypting;
-{
- int n; /* index in random header */
- int t; /* temporary */
- int c; /* random byte */
- unsigned char header[RAND_HEAD_LEN-2]; /* random header */
- static unsigned calls = 0; /* ensure different random header each time */
-
- if (bufSize<RAND_HEAD_LEN)
- return 0;
-
- /* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
- * output of rand() to get less predictability, since rand() is
- * often poorly implemented.
- */
- if (++calls == 1)
- {
- srand((unsigned)(time(NULL) ^ ZCR_SEED2));
- }
- init_keys(passwd, pkeys, pcrc_32_tab);
- for (n = 0; n < RAND_HEAD_LEN-2; n++)
- {
- c = (rand() >> 7) & 0xff;
- header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t);
- }
- /* Encrypt random header (last two bytes is high word of crc) */
- init_keys(passwd, pkeys, pcrc_32_tab);
- for (n = 0; n < RAND_HEAD_LEN-2; n++)
- {
- buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t);
- }
- buf[n++] = zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t);
- buf[n++] = zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t);
- return n;
-}
-
-#endif
+++ /dev/null
-/* ioapi.c -- IO base function header for compress/uncompress .zip
- files using zlib + zip or unzip API
-
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "zlib.h"
-#include "ioapi.h"
-
-
-
-/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
-
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-
-#ifndef SEEK_END
-#define SEEK_END 2
-#endif
-
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-
-voidpf ZCALLBACK fopen_file_func OF((
- voidpf opaque,
- const char* filename,
- int mode));
-
-uLong ZCALLBACK fread_file_func OF((
- voidpf opaque,
- voidpf stream,
- void* buf,
- uLong size));
-
-uLong ZCALLBACK fwrite_file_func OF((
- voidpf opaque,
- voidpf stream,
- const void* buf,
- uLong size));
-
-long ZCALLBACK ftell_file_func OF((
- voidpf opaque,
- voidpf stream));
-
-long ZCALLBACK fseek_file_func OF((
- voidpf opaque,
- voidpf stream,
- uLong offset,
- int origin));
-
-int ZCALLBACK fclose_file_func OF((
- voidpf opaque,
- voidpf stream));
-
-int ZCALLBACK ferror_file_func OF((
- voidpf opaque,
- voidpf stream));
-
-
-voidpf ZCALLBACK fopen_file_func (opaque, filename, mode)
- voidpf opaque;
- const char* filename;
- int mode;
-{
- FILE* file = NULL;
- const char* mode_fopen = NULL;
- if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
- mode_fopen = "rb";
- else
- if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
- mode_fopen = "r+b";
- else
- if (mode & ZLIB_FILEFUNC_MODE_CREATE)
- mode_fopen = "wb";
-
- if ((filename!=NULL) && (mode_fopen != NULL))
- file = fopen(filename, mode_fopen);
- return file;
-}
-
-
-uLong ZCALLBACK fread_file_func (opaque, stream, buf, size)
- voidpf opaque;
- voidpf stream;
- void* buf;
- uLong size;
-{
- uLong ret;
- ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
- return ret;
-}
-
-
-uLong ZCALLBACK fwrite_file_func (opaque, stream, buf, size)
- voidpf opaque;
- voidpf stream;
- const void* buf;
- uLong size;
-{
- uLong ret;
- ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
- return ret;
-}
-
-long ZCALLBACK ftell_file_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- long ret;
- ret = ftell((FILE *)stream);
- return ret;
-}
-
-long ZCALLBACK fseek_file_func (opaque, stream, offset, origin)
- voidpf opaque;
- voidpf stream;
- uLong offset;
- int origin;
-{
- int fseek_origin=0;
- long ret;
- switch (origin)
- {
- case ZLIB_FILEFUNC_SEEK_CUR :
- fseek_origin = SEEK_CUR;
- break;
- case ZLIB_FILEFUNC_SEEK_END :
- fseek_origin = SEEK_END;
- break;
- case ZLIB_FILEFUNC_SEEK_SET :
- fseek_origin = SEEK_SET;
- break;
- default: return -1;
- }
- ret = 0;
- fseek((FILE *)stream, offset, fseek_origin);
- return ret;
-}
-
-int ZCALLBACK fclose_file_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- int ret;
- ret = fclose((FILE *)stream);
- return ret;
-}
-
-int ZCALLBACK ferror_file_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- int ret;
- ret = ferror((FILE *)stream);
- return ret;
-}
-
-void fill_fopen_filefunc (pzlib_filefunc_def)
- zlib_filefunc_def* pzlib_filefunc_def;
-{
- pzlib_filefunc_def->zopen_file = fopen_file_func;
- pzlib_filefunc_def->zread_file = fread_file_func;
- pzlib_filefunc_def->zwrite_file = fwrite_file_func;
- pzlib_filefunc_def->ztell_file = ftell_file_func;
- pzlib_filefunc_def->zseek_file = fseek_file_func;
- pzlib_filefunc_def->zclose_file = fclose_file_func;
- pzlib_filefunc_def->zerror_file = ferror_file_func;
- pzlib_filefunc_def->opaque = NULL;
-}
+++ /dev/null
-/* ioapi.h -- IO base function header for compress/uncompress .zip
- files using zlib + zip or unzip API
-
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-*/
-
-#ifndef _ZLIBIOAPI_H
-#define _ZLIBIOAPI_H
-
-
-#define ZLIB_FILEFUNC_SEEK_CUR (1)
-#define ZLIB_FILEFUNC_SEEK_END (2)
-#define ZLIB_FILEFUNC_SEEK_SET (0)
-
-#define ZLIB_FILEFUNC_MODE_READ (1)
-#define ZLIB_FILEFUNC_MODE_WRITE (2)
-#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
-
-#define ZLIB_FILEFUNC_MODE_EXISTING (4)
-#define ZLIB_FILEFUNC_MODE_CREATE (8)
-
-
-#ifndef ZCALLBACK
-
-#if (defined(WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
-#define ZCALLBACK CALLBACK
-#else
-#define ZCALLBACK
-#endif
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef voidpf (ZCALLBACK *open_file_func) OF((voidpf opaque, const char* filename, int mode));
-typedef uLong (ZCALLBACK *read_file_func) OF((voidpf opaque, voidpf stream, void* buf, uLong size));
-typedef uLong (ZCALLBACK *write_file_func) OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
-typedef long (ZCALLBACK *tell_file_func) OF((voidpf opaque, voidpf stream));
-typedef long (ZCALLBACK *seek_file_func) OF((voidpf opaque, voidpf stream, uLong offset, int origin));
-typedef int (ZCALLBACK *close_file_func) OF((voidpf opaque, voidpf stream));
-typedef int (ZCALLBACK *testerror_file_func) OF((voidpf opaque, voidpf stream));
-
-typedef struct zlib_filefunc_def_s
-{
- open_file_func zopen_file;
- read_file_func zread_file;
- write_file_func zwrite_file;
- tell_file_func ztell_file;
- seek_file_func zseek_file;
- close_file_func zclose_file;
- testerror_file_func zerror_file;
- voidpf opaque;
-} zlib_filefunc_def;
-
-
-
-void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
-
-#define ZREAD(filefunc,filestream,buf,size) ((*((filefunc).zread_file))((filefunc).opaque,filestream,buf,size))
-#define ZWRITE(filefunc,filestream,buf,size) ((*((filefunc).zwrite_file))((filefunc).opaque,filestream,buf,size))
-#define ZTELL(filefunc,filestream) ((*((filefunc).ztell_file))((filefunc).opaque,filestream))
-#define ZSEEK(filefunc,filestream,pos,mode) ((*((filefunc).zseek_file))((filefunc).opaque,filestream,pos,mode))
-#define ZCLOSE(filefunc,filestream) ((*((filefunc).zclose_file))((filefunc).opaque,filestream))
-#define ZERROR(filefunc,filestream) ((*((filefunc).zerror_file))((filefunc).opaque,filestream))
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
+++ /dev/null
-/* iowin32.c -- IO base function header for compress/uncompress .zip
- files using zlib + zip or unzip API
- This IO API version uses the Win32 API (for Microsoft Windows)
-
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-*/
-
-#include <stdlib.h>
-
-#include "zlib.h"
-#include "ioapi.h"
-#include "iowin32.h"
-
-#ifndef INVALID_HANDLE_VALUE
-#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
-#endif
-
-#ifndef INVALID_SET_FILE_POINTER
-#define INVALID_SET_FILE_POINTER ((DWORD)-1)
-#endif
-
-voidpf ZCALLBACK win32_open_file_func OF((
- voidpf opaque,
- const char* filename,
- int mode));
-
-uLong ZCALLBACK win32_read_file_func OF((
- voidpf opaque,
- voidpf stream,
- void* buf,
- uLong size));
-
-uLong ZCALLBACK win32_write_file_func OF((
- voidpf opaque,
- voidpf stream,
- const void* buf,
- uLong size));
-
-long ZCALLBACK win32_tell_file_func OF((
- voidpf opaque,
- voidpf stream));
-
-long ZCALLBACK win32_seek_file_func OF((
- voidpf opaque,
- voidpf stream,
- uLong offset,
- int origin));
-
-int ZCALLBACK win32_close_file_func OF((
- voidpf opaque,
- voidpf stream));
-
-int ZCALLBACK win32_error_file_func OF((
- voidpf opaque,
- voidpf stream));
-
-typedef struct
-{
- HANDLE hf;
- int error;
-} WIN32FILE_IOWIN;
-
-voidpf ZCALLBACK win32_open_file_func (opaque, filename, mode)
- voidpf opaque;
- const char* filename;
- int mode;
-{
- const char* mode_fopen = NULL;
- DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
- HANDLE hFile = 0;
- voidpf ret=NULL;
-
- dwDesiredAccess = dwShareMode = dwFlagsAndAttributes = 0;
-
- if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
- {
- dwDesiredAccess = GENERIC_READ;
- dwCreationDisposition = OPEN_EXISTING;
- dwShareMode = FILE_SHARE_READ;
- }
- else
- if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
- {
- dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
- dwCreationDisposition = OPEN_EXISTING;
- }
- else
- if (mode & ZLIB_FILEFUNC_MODE_CREATE)
- {
- dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
- dwCreationDisposition = CREATE_ALWAYS;
- }
-
- if ((filename!=NULL) && (dwDesiredAccess != 0))
- hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL,
- dwCreationDisposition, dwFlagsAndAttributes, NULL);
-
- if (hFile == INVALID_HANDLE_VALUE)
- hFile = NULL;
-
- if (hFile != NULL)
- {
- WIN32FILE_IOWIN w32fiow;
- w32fiow.hf = hFile;
- w32fiow.error = 0;
- ret = malloc(sizeof(WIN32FILE_IOWIN));
- if (ret==NULL)
- CloseHandle(hFile);
- else *((WIN32FILE_IOWIN*)ret) = w32fiow;
- }
- return ret;
-}
-
-
-uLong ZCALLBACK win32_read_file_func (opaque, stream, buf, size)
- voidpf opaque;
- voidpf stream;
- void* buf;
- uLong size;
-{
- uLong ret=0;
- HANDLE hFile = NULL;
- if (stream!=NULL)
- hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
- if (hFile != NULL)
- if (!ReadFile(hFile, buf, size, &ret, NULL))
- {
- DWORD dwErr = GetLastError();
- if (dwErr == ERROR_HANDLE_EOF)
- dwErr = 0;
- ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
- }
-
- return ret;
-}
-
-
-uLong ZCALLBACK win32_write_file_func (opaque, stream, buf, size)
- voidpf opaque;
- voidpf stream;
- const void* buf;
- uLong size;
-{
- uLong ret=0;
- HANDLE hFile = NULL;
- if (stream!=NULL)
- hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
-
- if (hFile !=NULL)
- if (!WriteFile(hFile, buf, size, &ret, NULL))
- {
- DWORD dwErr = GetLastError();
- if (dwErr == ERROR_HANDLE_EOF)
- dwErr = 0;
- ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
- }
-
- return ret;
-}
-
-long ZCALLBACK win32_tell_file_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- long ret=-1;
- HANDLE hFile = NULL;
- if (stream!=NULL)
- hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
- if (hFile != NULL)
- {
- DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
- if (dwSet == INVALID_SET_FILE_POINTER)
- {
- DWORD dwErr = GetLastError();
- ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
- ret = -1;
- }
- else
- ret=(long)dwSet;
- }
- return ret;
-}
-
-long ZCALLBACK win32_seek_file_func (opaque, stream, offset, origin)
- voidpf opaque;
- voidpf stream;
- uLong offset;
- int origin;
-{
- DWORD dwMoveMethod=0xFFFFFFFF;
- HANDLE hFile = NULL;
-
- long ret=-1;
- if (stream!=NULL)
- hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
- switch (origin)
- {
- case ZLIB_FILEFUNC_SEEK_CUR :
- dwMoveMethod = FILE_CURRENT;
- break;
- case ZLIB_FILEFUNC_SEEK_END :
- dwMoveMethod = FILE_END;
- break;
- case ZLIB_FILEFUNC_SEEK_SET :
- dwMoveMethod = FILE_BEGIN;
- break;
- default: return -1;
- }
-
- if (hFile != NULL)
- {
- DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
- if (dwSet == INVALID_SET_FILE_POINTER)
- {
- DWORD dwErr = GetLastError();
- ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
- ret = -1;
- }
- else
- ret=0;
- }
- return ret;
-}
-
-int ZCALLBACK win32_close_file_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- int ret=-1;
-
- if (stream!=NULL)
- {
- HANDLE hFile;
- hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
- if (hFile != NULL)
- {
- CloseHandle(hFile);
- ret=0;
- }
- free(stream);
- }
- return ret;
-}
-
-int ZCALLBACK win32_error_file_func (opaque, stream)
- voidpf opaque;
- voidpf stream;
-{
- int ret=-1;
- if (stream!=NULL)
- {
- ret = ((WIN32FILE_IOWIN*)stream) -> error;
- }
- return ret;
-}
-
-void fill_win32_filefunc (pzlib_filefunc_def)
- zlib_filefunc_def* pzlib_filefunc_def;
-{
- pzlib_filefunc_def->zopen_file = win32_open_file_func;
- pzlib_filefunc_def->zread_file = win32_read_file_func;
- pzlib_filefunc_def->zwrite_file = win32_write_file_func;
- pzlib_filefunc_def->ztell_file = win32_tell_file_func;
- pzlib_filefunc_def->zseek_file = win32_seek_file_func;
- pzlib_filefunc_def->zclose_file = win32_close_file_func;
- pzlib_filefunc_def->zerror_file = win32_error_file_func;
- pzlib_filefunc_def->opaque=NULL;
-}
+++ /dev/null
-/* iowin32.h -- IO base function header for compress/uncompress .zip
- files using zlib + zip or unzip API
- This IO API version uses the Win32 API (for Microsoft Windows)
-
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-*/
-
-#include <windows.h>
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-void fill_win32_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
-
-#ifdef __cplusplus
-}
-#endif
+++ /dev/null
-/*
- miniunz.c
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#ifdef unix
-# include <unistd.h>
-# include <utime.h>
-#else
-# include <direct.h>
-# include <io.h>
-#endif
-
-#include "unzip.h"
-
-#define CASESENSITIVITY (0)
-#define WRITEBUFFERSIZE (8192)
-#define MAXFILENAME (256)
-
-#ifdef WIN32
-#define USEWIN32IOAPI
-#include "iowin32.h"
-#endif
-/*
- mini unzip, demo of unzip package
-
- usage :
- Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]
-
- list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
- if it exists
-*/
-
-
-/* change_file_date : change the date/time of a file
- filename : the filename of the file where date/time must be modified
- dosdate : the new date at the MSDos format (4 bytes)
- tmu_date : the SAME new date at the tm_unz format */
-void change_file_date(filename,dosdate,tmu_date)
- const char *filename;
- uLong dosdate;
- tm_unz tmu_date;
-{
-#ifdef WIN32
- HANDLE hFile;
- FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
-
- hFile = CreateFile(filename,GENERIC_READ | GENERIC_WRITE,
- 0,NULL,OPEN_EXISTING,0,NULL);
- GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
- DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
- LocalFileTimeToFileTime(&ftLocal,&ftm);
- SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
- CloseHandle(hFile);
-#else
-#ifdef unix
- struct utimbuf ut;
- struct tm newdate;
- newdate.tm_sec = tmu_date.tm_sec;
- newdate.tm_min=tmu_date.tm_min;
- newdate.tm_hour=tmu_date.tm_hour;
- newdate.tm_mday=tmu_date.tm_mday;
- newdate.tm_mon=tmu_date.tm_mon;
- if (tmu_date.tm_year > 1900)
- newdate.tm_year=tmu_date.tm_year - 1900;
- else
- newdate.tm_year=tmu_date.tm_year ;
- newdate.tm_isdst=-1;
-
- ut.actime=ut.modtime=mktime(&newdate);
- utime(filename,&ut);
-#endif
-#endif
-}
-
-
-/* mymkdir and change_file_date are not 100 % portable
- As I don't know well Unix, I wait feedback for the unix portion */
-
-int mymkdir(dirname)
- const char* dirname;
-{
- int ret=0;
-#ifdef WIN32
- ret = mkdir(dirname);
-#else
-#ifdef unix
- ret = mkdir (dirname,0775);
-#endif
-#endif
- return ret;
-}
-
-int makedir (newdir)
- char *newdir;
-{
- char *buffer ;
- char *p;
- int len = (int)strlen(newdir);
-
- if (len <= 0)
- return 0;
-
- buffer = (char*)malloc(len+1);
- strcpy(buffer,newdir);
-
- if (buffer[len-1] == '/') {
- buffer[len-1] = '\0';
- }
- if (mymkdir(buffer) == 0)
- {
- free(buffer);
- return 1;
- }
-
- p = buffer+1;
- while (1)
- {
- char hold;
-
- while(*p && *p != '\\' && *p != '/')
- p++;
- hold = *p;
- *p = 0;
- if ((mymkdir(buffer) == -1) && (errno == ENOENT))
- {
- printf("couldn't create directory %s\n",buffer);
- free(buffer);
- return 0;
- }
- if (hold == 0)
- break;
- *p++ = hold;
- }
- free(buffer);
- return 1;
-}
-
-void do_banner()
-{
- printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
- printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
-}
-
-void do_help()
-{
- printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
- " -e Extract without pathname (junk paths)\n" \
- " -x Extract with pathname\n" \
- " -v list files\n" \
- " -l list files\n" \
- " -d directory to extract into\n" \
- " -o overwrite files without prompting\n" \
- " -p extract crypted file using password\n\n");
-}
-
-
-int do_list(uf)
- unzFile uf;
-{
- uLong i;
- unz_global_info gi;
- int err;
-
- err = unzGetGlobalInfo (uf,&gi);
- if (err!=UNZ_OK)
- printf("error %d with zipfile in unzGetGlobalInfo \n",err);
- printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
- printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
- for (i=0;i<gi.number_entry;i++)
- {
- char filename_inzip[256];
- unz_file_info file_info;
- uLong ratio=0;
- const char *string_method;
- char charCrypt=' ';
- err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
- if (err!=UNZ_OK)
- {
- printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
- break;
- }
- if (file_info.uncompressed_size>0)
- ratio = (file_info.compressed_size*100)/file_info.uncompressed_size;
-
- /* display a '*' if the file is crypted */
- if ((file_info.flag & 1) != 0)
- charCrypt='*';
-
- if (file_info.compression_method==0)
- string_method="Stored";
- else
- if (file_info.compression_method==Z_DEFLATED)
- {
- uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
- if (iLevel==0)
- string_method="Defl:N";
- else if (iLevel==1)
- string_method="Defl:X";
- else if ((iLevel==2) || (iLevel==3))
- string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
- }
- else
- string_method="Unkn. ";
-
- printf("%7lu %6s%c%7lu %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
- file_info.uncompressed_size,string_method,
- charCrypt,
- file_info.compressed_size,
- ratio,
- (uLong)file_info.tmu_date.tm_mon + 1,
- (uLong)file_info.tmu_date.tm_mday,
- (uLong)file_info.tmu_date.tm_year % 100,
- (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
- (uLong)file_info.crc,filename_inzip);
- if ((i+1)<gi.number_entry)
- {
- err = unzGoToNextFile(uf);
- if (err!=UNZ_OK)
- {
- printf("error %d with zipfile in unzGoToNextFile\n",err);
- break;
- }
- }
- }
-
- return 0;
-}
-
-
-int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
- unzFile uf;
- const int* popt_extract_without_path;
- int* popt_overwrite;
- const char* password;
-{
- char filename_inzip[256];
- char* filename_withoutpath;
- char* p;
- int err=UNZ_OK;
- FILE *fout=NULL;
- void* buf;
- uInt size_buf;
-
- unz_file_info file_info;
- uLong ratio=0;
- err = unzGetCurrentFileInfo(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
-
- if (err!=UNZ_OK)
- {
- printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
- return err;
- }
-
- size_buf = WRITEBUFFERSIZE;
- buf = (void*)malloc(size_buf);
- if (buf==NULL)
- {
- printf("Error allocating memory\n");
- return UNZ_INTERNALERROR;
- }
-
- p = filename_withoutpath = filename_inzip;
- while ((*p) != '\0')
- {
- if (((*p)=='/') || ((*p)=='\\'))
- filename_withoutpath = p+1;
- p++;
- }
-
- if ((*filename_withoutpath)=='\0')
- {
- if ((*popt_extract_without_path)==0)
- {
- printf("creating directory: %s\n",filename_inzip);
- mymkdir(filename_inzip);
- }
- }
- else
- {
- const char* write_filename;
- int skip=0;
-
- if ((*popt_extract_without_path)==0)
- write_filename = filename_inzip;
- else
- write_filename = filename_withoutpath;
-
- err = unzOpenCurrentFilePassword(uf,password);
- if (err!=UNZ_OK)
- {
- printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
- }
-
- if (((*popt_overwrite)==0) && (err==UNZ_OK))
- {
- char rep=0;
- FILE* ftestexist;
- ftestexist = fopen(write_filename,"rb");
- if (ftestexist!=NULL)
- {
- fclose(ftestexist);
- do
- {
- char answer[128];
- int ret;
-
- printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
- ret = scanf("%1s",answer);
- if (ret != 1)
- {
- exit(EXIT_FAILURE);
- }
- rep = answer[0] ;
- if ((rep>='a') && (rep<='z'))
- rep -= 0x20;
- }
- while ((rep!='Y') && (rep!='N') && (rep!='A'));
- }
-
- if (rep == 'N')
- skip = 1;
-
- if (rep == 'A')
- *popt_overwrite=1;
- }
-
- if ((skip==0) && (err==UNZ_OK))
- {
- fout=fopen(write_filename,"wb");
-
- /* some zipfile don't contain directory alone before file */
- if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
- (filename_withoutpath!=(char*)filename_inzip))
- {
- char c=*(filename_withoutpath-1);
- *(filename_withoutpath-1)='\0';
- makedir(write_filename);
- *(filename_withoutpath-1)=c;
- fout=fopen(write_filename,"wb");
- }
-
- if (fout==NULL)
- {
- printf("error opening %s\n",write_filename);
- }
- }
-
- if (fout!=NULL)
- {
- printf(" extracting: %s\n",write_filename);
-
- do
- {
- err = unzReadCurrentFile(uf,buf,size_buf);
- if (err<0)
- {
- printf("error %d with zipfile in unzReadCurrentFile\n",err);
- break;
- }
- if (err>0)
- if (fwrite(buf,err,1,fout)!=1)
- {
- printf("error in writing extracted file\n");
- err=UNZ_ERRNO;
- break;
- }
- }
- while (err>0);
- if (fout)
- fclose(fout);
-
- if (err==0)
- change_file_date(write_filename,file_info.dosDate,
- file_info.tmu_date);
- }
-
- if (err==UNZ_OK)
- {
- err = unzCloseCurrentFile (uf);
- if (err!=UNZ_OK)
- {
- printf("error %d with zipfile in unzCloseCurrentFile\n",err);
- }
- }
- else
- unzCloseCurrentFile(uf); /* don't lose the error */
- }
-
- free(buf);
- return err;
-}
-
-
-int do_extract(uf,opt_extract_without_path,opt_overwrite,password)
- unzFile uf;
- int opt_extract_without_path;
- int opt_overwrite;
- const char* password;
-{
- uLong i;
- unz_global_info gi;
- int err;
- FILE* fout=NULL;
-
- err = unzGetGlobalInfo (uf,&gi);
- if (err!=UNZ_OK)
- printf("error %d with zipfile in unzGetGlobalInfo \n",err);
-
- for (i=0;i<gi.number_entry;i++)
- {
- if (do_extract_currentfile(uf,&opt_extract_without_path,
- &opt_overwrite,
- password) != UNZ_OK)
- break;
-
- if ((i+1)<gi.number_entry)
- {
- err = unzGoToNextFile(uf);
- if (err!=UNZ_OK)
- {
- printf("error %d with zipfile in unzGoToNextFile\n",err);
- break;
- }
- }
- }
-
- return 0;
-}
-
-int do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)
- unzFile uf;
- const char* filename;
- int opt_extract_without_path;
- int opt_overwrite;
- const char* password;
-{
- int err = UNZ_OK;
- if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
- {
- printf("file %s not found in the zipfile\n",filename);
- return 2;
- }
-
- if (do_extract_currentfile(uf,&opt_extract_without_path,
- &opt_overwrite,
- password) == UNZ_OK)
- return 0;
- else
- return 1;
-}
-
-
-int main(argc,argv)
- int argc;
- char *argv[];
-{
- const char *zipfilename=NULL;
- const char *filename_to_extract=NULL;
- const char *password=NULL;
- char filename_try[MAXFILENAME+16] = "";
- int i;
- int opt_do_list=0;
- int opt_do_extract=1;
- int opt_do_extract_withoutpath=0;
- int opt_overwrite=0;
- int opt_extractdir=0;
- const char *dirname=NULL;
- unzFile uf=NULL;
-
- do_banner();
- if (argc==1)
- {
- do_help();
- return 0;
- }
- else
- {
- for (i=1;i<argc;i++)
- {
- if ((*argv[i])=='-')
- {
- const char *p=argv[i]+1;
-
- while ((*p)!='\0')
- {
- char c=*(p++);;
- if ((c=='l') || (c=='L'))
- opt_do_list = 1;
- if ((c=='v') || (c=='V'))
- opt_do_list = 1;
- if ((c=='x') || (c=='X'))
- opt_do_extract = 1;
- if ((c=='e') || (c=='E'))
- opt_do_extract = opt_do_extract_withoutpath = 1;
- if ((c=='o') || (c=='O'))
- opt_overwrite=1;
- if ((c=='d') || (c=='D'))
- {
- opt_extractdir=1;
- dirname=argv[i+1];
- }
-
- if (((c=='p') || (c=='P')) && (i+1<argc))
- {
- password=argv[i+1];
- i++;
- }
- }
- }
- else
- {
- if (zipfilename == NULL)
- zipfilename = argv[i];
- else if ((filename_to_extract==NULL) && (!opt_extractdir))
- filename_to_extract = argv[i] ;
- }
- }
- }
-
- if (zipfilename!=NULL)
- {
-
-# ifdef USEWIN32IOAPI
- zlib_filefunc_def ffunc;
-# endif
-
- strncpy(filename_try, zipfilename,MAXFILENAME-1);
- /* strncpy doesn't append the trailing NULL, if the string is too long. */
- filename_try[ MAXFILENAME ] = '\0';
-
-# ifdef USEWIN32IOAPI
- fill_win32_filefunc(&ffunc);
- uf = unzOpen2(zipfilename,&ffunc);
-# else
- uf = unzOpen(zipfilename);
-# endif
- if (uf==NULL)
- {
- strcat(filename_try,".zip");
-# ifdef USEWIN32IOAPI
- uf = unzOpen2(filename_try,&ffunc);
-# else
- uf = unzOpen(filename_try);
-# endif
- }
- }
-
- if (uf==NULL)
- {
- printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
- return 1;
- }
- printf("%s opened\n",filename_try);
-
- if (opt_do_list==1)
- return do_list(uf);
- else if (opt_do_extract==1)
- {
- if (opt_extractdir && chdir(dirname))
- {
- printf("Error changing into %s, aborting\n", dirname);
- exit(-1);
- }
-
- if (filename_to_extract == NULL)
- return do_extract(uf,opt_do_extract_withoutpath,opt_overwrite,password);
- else
- return do_extract_onefile(uf,filename_to_extract,
- opt_do_extract_withoutpath,opt_overwrite,password);
- }
- unzCloseCurrentFile(uf);
-
- return 0;
-}
+++ /dev/null
-/*
- minizip.c
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#ifdef unix
-# include <unistd.h>
-# include <utime.h>
-# include <sys/types.h>
-# include <sys/stat.h>
-#else
-# include <direct.h>
-# include <io.h>
-#endif
-
-#include "zip.h"
-
-#ifdef WIN32
-#define USEWIN32IOAPI
-#include "iowin32.h"
-#endif
-
-
-
-#define WRITEBUFFERSIZE (16384)
-#define MAXFILENAME (256)
-
-#ifdef WIN32
-uLong filetime(f, tmzip, dt)
- char *f; /* name of file to get info on */
- tm_zip *tmzip; /* return value: access, modific. and creation times */
- uLong *dt; /* dostime */
-{
- int ret = 0;
- {
- FILETIME ftLocal;
- HANDLE hFind;
- WIN32_FIND_DATA ff32;
-
- hFind = FindFirstFile(f,&ff32);
- if (hFind != INVALID_HANDLE_VALUE)
- {
- FileTimeToLocalFileTime(&(ff32.ftLastWriteTime),&ftLocal);
- FileTimeToDosDateTime(&ftLocal,((LPWORD)dt)+1,((LPWORD)dt)+0);
- FindClose(hFind);
- ret = 1;
- }
- }
- return ret;
-}
-#else
-#ifdef unix
-uLong filetime(f, tmzip, dt)
- char *f; /* name of file to get info on */
- tm_zip *tmzip; /* return value: access, modific. and creation times */
- uLong *dt; /* dostime */
-{
- int ret=0;
- struct stat s; /* results of stat() */
- struct tm* filedate;
- time_t tm_t=0;
-
- if (strcmp(f,"-")!=0)
- {
- char name[MAXFILENAME+1];
- int len = strlen(f);
- if (len > MAXFILENAME)
- len = MAXFILENAME;
-
- strncpy(name, f,MAXFILENAME-1);
- /* strncpy doesn't append the trailing NULL, if the string is too long. */
- name[ MAXFILENAME ] = '\0';
-
- if (name[len - 1] == '/')
- name[len - 1] = '\0';
- /* not all systems allow stat'ing a file with / appended */
- if (stat(name,&s)==0)
- {
- tm_t = s.st_mtime;
- ret = 1;
- }
- }
- filedate = localtime(&tm_t);
-
- tmzip->tm_sec = filedate->tm_sec;
- tmzip->tm_min = filedate->tm_min;
- tmzip->tm_hour = filedate->tm_hour;
- tmzip->tm_mday = filedate->tm_mday;
- tmzip->tm_mon = filedate->tm_mon ;
- tmzip->tm_year = filedate->tm_year;
-
- return ret;
-}
-#else
-uLong filetime(f, tmzip, dt)
- char *f; /* name of file to get info on */
- tm_zip *tmzip; /* return value: access, modific. and creation times */
- uLong *dt; /* dostime */
-{
- return 0;
-}
-#endif
-#endif
-
-
-
-
-int check_exist_file(filename)
- const char* filename;
-{
- FILE* ftestexist;
- int ret = 1;
- ftestexist = fopen(filename,"rb");
- if (ftestexist==NULL)
- ret = 0;
- else
- fclose(ftestexist);
- return ret;
-}
-
-void do_banner()
-{
- printf("MiniZip 1.01b, demo of zLib + Zip package written by Gilles Vollant\n");
- printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
-}
-
-void do_help()
-{
- printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] file.zip [files_to_add]\n\n" \
- " -o Overwrite existing file.zip\n" \
- " -a Append to existing file.zip\n" \
- " -0 Store only\n" \
- " -1 Compress faster\n" \
- " -9 Compress better\n\n");
-}
-
-/* calculate the CRC32 of a file,
- because to encrypt a file, we need known the CRC32 of the file before */
-int getFileCrc(const char* filenameinzip,void*buf,unsigned long size_buf,unsigned long* result_crc)
-{
- unsigned long calculate_crc=0;
- int err=ZIP_OK;
- FILE * fin = fopen(filenameinzip,"rb");
- unsigned long size_read = 0;
- unsigned long total_read = 0;
- if (fin==NULL)
- {
- err = ZIP_ERRNO;
- }
-
- if (err == ZIP_OK)
- do
- {
- err = ZIP_OK;
- size_read = (int)fread(buf,1,size_buf,fin);
- if (size_read < size_buf)
- if (feof(fin)==0)
- {
- printf("error in reading %s\n",filenameinzip);
- err = ZIP_ERRNO;
- }
-
- if (size_read>0)
- calculate_crc = crc32(calculate_crc,buf,size_read);
- total_read += size_read;
-
- } while ((err == ZIP_OK) && (size_read>0));
-
- if (fin)
- fclose(fin);
-
- *result_crc=calculate_crc;
- printf("file %s crc %x\n",filenameinzip,calculate_crc);
- return err;
-}
-
-int main(argc,argv)
- int argc;
- char *argv[];
-{
- int i;
- int opt_overwrite=0;
- int opt_compress_level=Z_DEFAULT_COMPRESSION;
- int zipfilenamearg = 0;
- char filename_try[MAXFILENAME+16];
- int zipok;
- int err=0;
- int size_buf=0;
- void* buf=NULL;
- const char* password=NULL;
-
-
- do_banner();
- if (argc==1)
- {
- do_help();
- return 0;
- }
- else
- {
- for (i=1;i<argc;i++)
- {
- if ((*argv[i])=='-')
- {
- const char *p=argv[i]+1;
-
- while ((*p)!='\0')
- {
- char c=*(p++);;
- if ((c=='o') || (c=='O'))
- opt_overwrite = 1;
- if ((c=='a') || (c=='A'))
- opt_overwrite = 2;
- if ((c>='0') && (c<='9'))
- opt_compress_level = c-'0';
-
- if (((c=='p') || (c=='P')) && (i+1<argc))
- {
- password=argv[i+1];
- i++;
- }
- }
- }
- else
- if (zipfilenamearg == 0)
- zipfilenamearg = i ;
- }
- }
-
- size_buf = WRITEBUFFERSIZE;
- buf = (void*)malloc(size_buf);
- if (buf==NULL)
- {
- printf("Error allocating memory\n");
- return ZIP_INTERNALERROR;
- }
-
- if (zipfilenamearg==0)
- zipok=0;
- else
- {
- int i,len;
- int dot_found=0;
-
- zipok = 1 ;
- strncpy(filename_try, argv[zipfilenamearg],MAXFILENAME-1);
- /* strncpy doesn't append the trailing NULL, if the string is too long. */
- filename_try[ MAXFILENAME ] = '\0';
-
- len=(int)strlen(filename_try);
- for (i=0;i<len;i++)
- if (filename_try[i]=='.')
- dot_found=1;
-
- if (dot_found==0)
- strcat(filename_try,".zip");
-
- if (opt_overwrite==2)
- {
- /* if the file don't exist, we not append file */
- if (check_exist_file(filename_try)==0)
- opt_overwrite=1;
- }
- else
- if (opt_overwrite==0)
- if (check_exist_file(filename_try)!=0)
- {
- char rep=0;
- do
- {
- char answer[128];
- int ret;
- printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
- ret = scanf("%1s",answer);
- if (ret != 1)
- {
- exit(EXIT_FAILURE);
- }
- rep = answer[0] ;
- if ((rep>='a') && (rep<='z'))
- rep -= 0x20;
- }
- while ((rep!='Y') && (rep!='N') && (rep!='A'));
- if (rep=='N')
- zipok = 0;
- if (rep=='A')
- opt_overwrite = 2;
- }
- }
-
- if (zipok==1)
- {
- zipFile zf;
- int errclose;
-# ifdef USEWIN32IOAPI
- zlib_filefunc_def ffunc;
- fill_win32_filefunc(&ffunc);
- zf = zipOpen2(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc);
-# else
- zf = zipOpen(filename_try,(opt_overwrite==2) ? 2 : 0);
-# endif
-
- if (zf == NULL)
- {
- printf("error opening %s\n",filename_try);
- err= ZIP_ERRNO;
- }
- else
- printf("creating %s\n",filename_try);
-
- for (i=zipfilenamearg+1;(i<argc) && (err==ZIP_OK);i++)
- {
- if (!((((*(argv[i]))=='-') || ((*(argv[i]))=='/')) &&
- ((argv[i][1]=='o') || (argv[i][1]=='O') ||
- (argv[i][1]=='a') || (argv[i][1]=='A') ||
- (argv[i][1]=='p') || (argv[i][1]=='P') ||
- ((argv[i][1]>='0') || (argv[i][1]<='9'))) &&
- (strlen(argv[i]) == 2)))
- {
- FILE * fin;
- int size_read;
- const char* filenameinzip = argv[i];
- zip_fileinfo zi;
- unsigned long crcFile=0;
-
- zi.tmz_date.tm_sec = zi.tmz_date.tm_min = zi.tmz_date.tm_hour =
- zi.tmz_date.tm_mday = zi.tmz_date.tm_mon = zi.tmz_date.tm_year = 0;
- zi.dosDate = 0;
- zi.internal_fa = 0;
- zi.external_fa = 0;
- filetime(filenameinzip,&zi.tmz_date,&zi.dosDate);
-
-/*
- err = zipOpenNewFileInZip(zf,filenameinzip,&zi,
- NULL,0,NULL,0,NULL / * comment * /,
- (opt_compress_level != 0) ? Z_DEFLATED : 0,
- opt_compress_level);
-*/
- if ((password != NULL) && (err==ZIP_OK))
- err = getFileCrc(filenameinzip,buf,size_buf,&crcFile);
-
- err = zipOpenNewFileInZip3(zf,filenameinzip,&zi,
- NULL,0,NULL,0,NULL /* comment*/,
- (opt_compress_level != 0) ? Z_DEFLATED : 0,
- opt_compress_level,0,
- /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */
- -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
- password,crcFile);
-
- if (err != ZIP_OK)
- printf("error in opening %s in zipfile\n",filenameinzip);
- else
- {
- fin = fopen(filenameinzip,"rb");
- if (fin==NULL)
- {
- err=ZIP_ERRNO;
- printf("error in opening %s for reading\n",filenameinzip);
- }
- }
-
- if (err == ZIP_OK)
- do
- {
- err = ZIP_OK;
- size_read = (int)fread(buf,1,size_buf,fin);
- if (size_read < size_buf)
- if (feof(fin)==0)
- {
- printf("error in reading %s\n",filenameinzip);
- err = ZIP_ERRNO;
- }
-
- if (size_read>0)
- {
- err = zipWriteInFileInZip (zf,buf,size_read);
- if (err<0)
- {
- printf("error in writing %s in the zipfile\n",
- filenameinzip);
- }
-
- }
- } while ((err == ZIP_OK) && (size_read>0));
-
- if (fin)
- fclose(fin);
-
- if (err<0)
- err=ZIP_ERRNO;
- else
- {
- err = zipCloseFileInZip(zf);
- if (err!=ZIP_OK)
- printf("error in closing %s in the zipfile\n",
- filenameinzip);
- }
- }
- }
- errclose = zipClose(zf,NULL);
- if (errclose != ZIP_OK)
- printf("error in closing %s\n",filename_try);
- }
- else
- {
- do_help();
- }
-
- free(buf);
- return 0;
-}
+++ /dev/null
-/*
- Additional tools for Minizip
- Code: Xavier Roche '2004
- License: Same as ZLIB (www.gzip.org)
-*/
-
-/* Code */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "zlib.h"
-#include "unzip.h"
-
-#define READ_8(adr) ((unsigned char)*(adr))
-#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )
-#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) )
-
-#define WRITE_8(buff, n) do { \
- *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \
-} while(0)
-#define WRITE_16(buff, n) do { \
- WRITE_8((unsigned char*)(buff), n); \
- WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \
-} while(0)
-#define WRITE_32(buff, n) do { \
- WRITE_16((unsigned char*)(buff), (n) & 0xffff); \
- WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \
-} while(0)
-
-extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered)
-const char* file;
-const char* fileOut;
-const char* fileOutTmp;
-uLong* nRecovered;
-uLong* bytesRecovered;
-{
- int err = Z_OK;
- FILE* fpZip = fopen(file, "rb");
- FILE* fpOut = fopen(fileOut, "wb");
- FILE* fpOutCD = fopen(fileOutTmp, "wb");
- if (fpZip != NULL && fpOut != NULL) {
- int entries = 0;
- uLong totalBytes = 0;
- char header[30];
- char filename[256];
- char extra[1024];
- int offset = 0;
- int offsetCD = 0;
- while ( fread(header, 1, 30, fpZip) == 30 ) {
- int currentOffset = offset;
-
- /* File entry */
- if (READ_32(header) == 0x04034b50) {
- unsigned int version = READ_16(header + 4);
- unsigned int gpflag = READ_16(header + 6);
- unsigned int method = READ_16(header + 8);
- unsigned int filetime = READ_16(header + 10);
- unsigned int filedate = READ_16(header + 12);
- unsigned int crc = READ_32(header + 14); /* crc */
- unsigned int cpsize = READ_32(header + 18); /* compressed size */
- unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */
- unsigned int fnsize = READ_16(header + 26); /* file name length */
- unsigned int extsize = READ_16(header + 28); /* extra field length */
- filename[0] = extra[0] = '\0';
-
- /* Header */
- if (fwrite(header, 1, 30, fpOut) == 30) {
- offset += 30;
- } else {
- err = Z_ERRNO;
- break;
- }
-
- /* Filename */
- if (fnsize > 0) {
- if (fread(filename, 1, fnsize, fpZip) == fnsize) {
- if (fwrite(filename, 1, fnsize, fpOut) == fnsize) {
- offset += fnsize;
- } else {
- err = Z_ERRNO;
- break;
- }
- } else {
- err = Z_ERRNO;
- break;
- }
- } else {
- err = Z_STREAM_ERROR;
- break;
- }
-
- /* Extra field */
- if (extsize > 0) {
- if (fread(extra, 1, extsize, fpZip) == extsize) {
- if (fwrite(extra, 1, extsize, fpOut) == extsize) {
- offset += extsize;
- } else {
- err = Z_ERRNO;
- break;
- }
- } else {
- err = Z_ERRNO;
- break;
- }
- }
-
- /* Data */
- {
- int dataSize = cpsize;
- if (dataSize == 0) {
- dataSize = uncpsize;
- }
- if (dataSize > 0) {
- char* data = malloc(dataSize);
- if (data != NULL) {
- if ((int)fread(data, 1, dataSize, fpZip) == dataSize) {
- if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) {
- offset += dataSize;
- totalBytes += dataSize;
- } else {
- err = Z_ERRNO;
- }
- } else {
- err = Z_ERRNO;
- }
- free(data);
- if (err != Z_OK) {
- break;
- }
- } else {
- err = Z_MEM_ERROR;
- break;
- }
- }
- }
-
- /* Central directory entry */
- {
- char header[46];
- char* comment = "";
- int comsize = (int) strlen(comment);
- WRITE_32(header, 0x02014b50);
- WRITE_16(header + 4, version);
- WRITE_16(header + 6, version);
- WRITE_16(header + 8, gpflag);
- WRITE_16(header + 10, method);
- WRITE_16(header + 12, filetime);
- WRITE_16(header + 14, filedate);
- WRITE_32(header + 16, crc);
- WRITE_32(header + 20, cpsize);
- WRITE_32(header + 24, uncpsize);
- WRITE_16(header + 28, fnsize);
- WRITE_16(header + 30, extsize);
- WRITE_16(header + 32, comsize);
- WRITE_16(header + 34, 0); /* disk # */
- WRITE_16(header + 36, 0); /* int attrb */
- WRITE_32(header + 38, 0); /* ext attrb */
- WRITE_32(header + 42, currentOffset);
- /* Header */
- if (fwrite(header, 1, 46, fpOutCD) == 46) {
- offsetCD += 46;
-
- /* Filename */
- if (fnsize > 0) {
- if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) {
- offsetCD += fnsize;
- } else {
- err = Z_ERRNO;
- break;
- }
- } else {
- err = Z_STREAM_ERROR;
- break;
- }
-
- /* Extra field */
- if (extsize > 0) {
- if (fwrite(extra, 1, extsize, fpOutCD) == extsize) {
- offsetCD += extsize;
- } else {
- err = Z_ERRNO;
- break;
- }
- }
-
- /* Comment field */
- if (comsize > 0) {
- if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) {
- offsetCD += comsize;
- } else {
- err = Z_ERRNO;
- break;
- }
- }
-
-
- } else {
- err = Z_ERRNO;
- break;
- }
- }
-
- /* Success */
- entries++;
-
- } else {
- break;
- }
- }
-
- /* Final central directory */
- {
- int entriesZip = entries;
- char header[22];
- char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools";
- int comsize = (int) strlen(comment);
- if (entriesZip > 0xffff) {
- entriesZip = 0xffff;
- }
- WRITE_32(header, 0x06054b50);
- WRITE_16(header + 4, 0); /* disk # */
- WRITE_16(header + 6, 0); /* disk # */
- WRITE_16(header + 8, entriesZip); /* hack */
- WRITE_16(header + 10, entriesZip); /* hack */
- WRITE_32(header + 12, offsetCD); /* size of CD */
- WRITE_32(header + 16, offset); /* offset to CD */
- WRITE_16(header + 20, comsize); /* comment */
-
- /* Header */
- if (fwrite(header, 1, 22, fpOutCD) == 22) {
-
- /* Comment field */
- if (comsize > 0) {
- if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) {
- err = Z_ERRNO;
- }
- }
-
- } else {
- err = Z_ERRNO;
- }
- }
-
- /* Final merge (file + central directory) */
- fclose(fpOutCD);
- if (err == Z_OK) {
- fpOutCD = fopen(fileOutTmp, "rb");
- if (fpOutCD != NULL) {
- int nRead;
- char buffer[8192];
- while ( (nRead = (int)fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) {
- if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) {
- err = Z_ERRNO;
- break;
- }
- }
- fclose(fpOutCD);
- }
- }
-
- /* Close */
- fclose(fpZip);
- fclose(fpOut);
-
- /* Wipe temporary file */
- (void)remove(fileOutTmp);
-
- /* Number of recovered entries */
- if (err == Z_OK) {
- if (nRecovered != NULL) {
- *nRecovered = entries;
- }
- if (bytesRecovered != NULL) {
- *bytesRecovered = totalBytes;
- }
- }
- } else {
- err = Z_STREAM_ERROR;
- }
- return err;
-}
+++ /dev/null
-/*
- Additional tools for Minizip
- Code: Xavier Roche '2004
- License: Same as ZLIB (www.gzip.org)
-*/
-
-#ifndef _zip_tools_H
-#define _zip_tools_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef _ZLIB_H
-#include "zlib.h"
-#endif
-
-#include "unzip.h"
-
-/* Repair a ZIP file (missing central directory)
- file: file to recover
- fileOut: output file after recovery
- fileOutTmp: temporary file name used for recovery
-*/
-extern int ZEXPORT unzRepair(const char* file,
- const char* fileOut,
- const char* fileOutTmp,
- uLong* nRecovered,
- uLong* bytesRecovered);
-
-#endif
+++ /dev/null
-/* unzip.c -- IO for uncompress .zip files using zlib
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-
- Read unzip.h for more info
-*/
-
-/* Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of
-compatibility with older software. The following is from the original crypt.c. Code
-woven in by Terry Thorsen 1/2003.
-*/
-/*
- Copyright (c) 1990-2000 Info-ZIP. All rights reserved.
-
- See the accompanying file LICENSE, version 2000-Apr-09 or later
- (the contents of which are also included in zip.h) for terms of use.
- If, for some reason, all these files are missing, the Info-ZIP license
- also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
-*/
-/*
- crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h]
-
- The encryption/decryption parts of this source code (as opposed to the
- non-echoing password parts) were originally written in Europe. The
- whole source package can be freely distributed, including from the USA.
- (Prior to January 2000, re-export from the US was a violation of US law.)
- */
-
-/*
- This encryption code is a direct transcription of the algorithm from
- Roger Schlafly, described by Phil Katz in the file appnote.txt. This
- file (appnote.txt) is distributed with the PKZIP program (even in the
- version without encryption capabilities).
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "zlib.h"
-#include "unzip.h"
-
-#ifdef STDC
-# include <stddef.h>
-# include <string.h>
-# include <stdlib.h>
-#endif
-#ifdef NO_ERRNO_H
- extern int errno;
-#else
-# include <errno.h>
-#endif
-
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-
-#ifndef CASESENSITIVITYDEFAULT_NO
-# if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES)
-# define CASESENSITIVITYDEFAULT_NO
-# endif
-#endif
-
-
-#ifndef UNZ_BUFSIZE
-#define UNZ_BUFSIZE (16384)
-#endif
-
-#ifndef UNZ_MAXFILENAMEINZIP
-#define UNZ_MAXFILENAMEINZIP (256)
-#endif
-
-#ifndef ALLOC
-# define ALLOC(size) (malloc(size))
-#endif
-#ifndef TRYFREE
-# define TRYFREE(p) {if (p) free(p);}
-#endif
-
-#define SIZECENTRALDIRITEM (0x2e)
-#define SIZEZIPLOCALHEADER (0x1e)
-
-
-
-
-const char unz_copyright[] =
- " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
-
-/* unz_file_info_interntal contain internal info about a file in zipfile*/
-typedef struct unz_file_info_internal_s
-{
- uLong offset_curfile;/* relative offset of local header 4 bytes */
-} unz_file_info_internal;
-
-
-/* file_in_zip_read_info_s contain internal information about a file in zipfile,
- when reading and decompress it */
-typedef struct
-{
- char *read_buffer; /* internal buffer for compressed data */
- z_stream stream; /* zLib stream structure for inflate */
-
- uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek*/
- uLong stream_initialised; /* flag set if stream structure is initialised*/
-
- uLong offset_local_extrafield;/* offset of the local extra field */
- uInt size_local_extrafield;/* size of the local extra field */
- uLong pos_local_extrafield; /* position in the local extra field in read*/
-
- uLong crc32; /* crc32 of all data uncompressed */
- uLong crc32_wait; /* crc32 we must obtain after decompress all */
- uLong rest_read_compressed; /* number of byte to be decompressed */
- uLong rest_read_uncompressed;/*number of byte to be obtained after decomp*/
- zlib_filefunc_def z_filefunc;
- voidpf filestream; /* io structore of the zipfile */
- uLong compression_method; /* compression method (0==store) */
- uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
- int raw;
-} file_in_zip_read_info_s;
-
-
-/* unz_s contain internal information about the zipfile
-*/
-typedef struct
-{
- zlib_filefunc_def z_filefunc;
- voidpf filestream; /* io structore of the zipfile */
- unz_global_info gi; /* public global information */
- uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
- uLong num_file; /* number of the current file in the zipfile*/
- uLong pos_in_central_dir; /* pos of the current file in the central dir*/
- uLong current_file_ok; /* flag about the usability of the current file*/
- uLong central_pos; /* position of the beginning of the central dir*/
-
- uLong size_central_dir; /* size of the central directory */
- uLong offset_central_dir; /* offset of start of central directory with
- respect to the starting disk number */
-
- unz_file_info cur_file_info; /* public info about the current file in zip*/
- unz_file_info_internal cur_file_info_internal; /* private info about it*/
- file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current
- file if we are decompressing it */
- int encrypted;
-# ifndef NOUNCRYPT
- unsigned long keys[3]; /* keys defining the pseudo-random sequence */
- const unsigned long* pcrc_32_tab;
-# endif
-} unz_s;
-
-
-#ifndef NOUNCRYPT
-#include "crypt.h"
-#endif
-
-/* ===========================================================================
- Read a byte from a gz_stream; update next_in and avail_in. Return EOF
- for end of file.
- IN assertion: the stream s has been successfully opened for reading.
-*/
-
-
-local int unzlocal_getByte OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- int *pi));
-
-local int unzlocal_getByte(pzlib_filefunc_def,filestream,pi)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- int *pi;
-{
- unsigned char c;
- int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
- if (err==1)
- {
- *pi = (int)c;
- return UNZ_OK;
- }
- else
- {
- if (ZERROR(*pzlib_filefunc_def,filestream))
- return UNZ_ERRNO;
- else
- return UNZ_EOF;
- }
-}
-
-
-/* ===========================================================================
- Reads a long in LSB order from the given gz_stream. Sets
-*/
-local int unzlocal_getShort OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int unzlocal_getShort (pzlib_filefunc_def,filestream,pX)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong *pX;
-{
- uLong x ;
- int i;
- int err;
-
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<8;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-local int unzlocal_getLong OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int unzlocal_getLong (pzlib_filefunc_def,filestream,pX)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong *pX;
-{
- uLong x ;
- int i;
- int err;
-
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<8;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<16;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<24;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-
-/* My own strcmpi / strcasecmp */
-local int strcmpcasenosensitive_internal (fileName1,fileName2)
- const char* fileName1;
- const char* fileName2;
-{
- for (;;)
- {
- char c1=*(fileName1++);
- char c2=*(fileName2++);
- if ((c1>='a') && (c1<='z'))
- c1 -= 0x20;
- if ((c2>='a') && (c2<='z'))
- c2 -= 0x20;
- if (c1=='\0')
- return ((c2=='\0') ? 0 : -1);
- if (c2=='\0')
- return 1;
- if (c1<c2)
- return -1;
- if (c1>c2)
- return 1;
- }
-}
-
-
-#ifdef CASESENSITIVITYDEFAULT_NO
-#define CASESENSITIVITYDEFAULTVALUE 2
-#else
-#define CASESENSITIVITYDEFAULTVALUE 1
-#endif
-
-#ifndef STRCMPCASENOSENTIVEFUNCTION
-#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal
-#endif
-
-/*
- Compare two filename (fileName1,fileName2).
- If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
- If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
- or strcasecmp)
- If iCaseSensitivity = 0, case sensitivity is default of your operating system
- (like 1 on Unix, 2 on Windows)
-
-*/
-extern int ZEXPORT unzStringFileNameCompare (fileName1,fileName2,iCaseSensitivity)
- const char* fileName1;
- const char* fileName2;
- int iCaseSensitivity;
-{
- if (iCaseSensitivity==0)
- iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE;
-
- if (iCaseSensitivity==1)
- return strcmp(fileName1,fileName2);
-
- return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2);
-}
-
-#ifndef BUFREADCOMMENT
-#define BUFREADCOMMENT (0x400)
-#endif
-
-/*
- Locate the Central directory of a zipfile (at the end, just before
- the global comment)
-*/
-local uLong unzlocal_SearchCentralDir OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream));
-
-local uLong unzlocal_SearchCentralDir(pzlib_filefunc_def,filestream)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
-{
- unsigned char* buf;
- uLong uSizeFile;
- uLong uBackRead;
- uLong uMaxBack=0xffff; /* maximum size of global comment */
- uLong uPosFound=0;
-
- if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
- return 0;
-
-
- uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
-
- if (uMaxBack>uSizeFile)
- uMaxBack = uSizeFile;
-
- buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
- if (buf==NULL)
- return 0;
-
- uBackRead = 4;
- while (uBackRead<uMaxBack)
- {
- uLong uReadSize,uReadPos ;
- int i;
- if (uBackRead+BUFREADCOMMENT>uMaxBack)
- uBackRead = uMaxBack;
- else
- uBackRead+=BUFREADCOMMENT;
- uReadPos = uSizeFile-uBackRead ;
-
- uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
- (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
- if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- break;
-
- if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
- break;
-
- for (i=(int)uReadSize-3; (i--)>0;)
- if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
- ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
- {
- uPosFound = uReadPos+i;
- break;
- }
-
- if (uPosFound!=0)
- break;
- }
- TRYFREE(buf);
- return uPosFound;
-}
-
-/*
- Open a Zip file. path contain the full pathname (by example,
- on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer
- "zlib/zlib114.zip".
- If the zipfile cannot be opened (file doesn't exist or in not valid), the
- return value is NULL.
- Else, the return value is a unzFile Handle, usable with other function
- of this unzip package.
-*/
-extern unzFile ZEXPORT unzOpen2 (path, pzlib_filefunc_def)
- const char *path;
- zlib_filefunc_def* pzlib_filefunc_def;
-{
- unz_s us;
- unz_s *s;
- uLong central_pos,uL;
-
- uLong number_disk; /* number of the current dist, used for
- spaning ZIP, unsupported, always 0*/
- uLong number_disk_with_CD; /* number the the disk with central dir, used
- for spaning ZIP, unsupported, always 0*/
- uLong number_entry_CD; /* total number of entries in
- the central dir
- (same than number_entry on nospan) */
-
- int err=UNZ_OK;
-
- if (unz_copyright[0]!=' ')
- return NULL;
-
- if (pzlib_filefunc_def==NULL)
- fill_fopen_filefunc(&us.z_filefunc);
- else
- us.z_filefunc = *pzlib_filefunc_def;
-
- us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque,
- path,
- ZLIB_FILEFUNC_MODE_READ |
- ZLIB_FILEFUNC_MODE_EXISTING);
- if (us.filestream==NULL)
- return NULL;
-
- central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream);
- if (central_pos==0)
- err=UNZ_ERRNO;
-
- if (ZSEEK(us.z_filefunc, us.filestream,
- central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=UNZ_ERRNO;
-
- /* the signature, already checked */
- if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of this disk */
- if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of the disk with the start of the central directory */
- if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* total number of entries in the central dir on this disk */
- if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* total number of entries in the central dir */
- if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- if ((number_entry_CD!=us.gi.number_entry) ||
- (number_disk_with_CD!=0) ||
- (number_disk!=0))
- err=UNZ_BADZIPFILE;
-
- /* size of the central directory */
- if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* offset of start of central directory with respect to the
- starting disk number */
- if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* zipfile comment length */
- if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
- (err==UNZ_OK))
- err=UNZ_BADZIPFILE;
-
- if (err!=UNZ_OK)
- {
- ZCLOSE(us.z_filefunc, us.filestream);
- return NULL;
- }
-
- us.byte_before_the_zipfile = central_pos -
- (us.offset_central_dir+us.size_central_dir);
- us.central_pos = central_pos;
- us.pfile_in_zip_read = NULL;
- us.encrypted = 0;
-
-
- s=(unz_s*)ALLOC(sizeof(unz_s));
- *s=us;
- unzGoToFirstFile((unzFile)s);
- return (unzFile)s;
-}
-
-
-extern unzFile ZEXPORT unzOpen (path)
- const char *path;
-{
- return unzOpen2(path, NULL);
-}
-
-/*
- Close a ZipFile opened with unzipOpen.
- If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
- these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
- return UNZ_OK if there is no problem. */
-extern int ZEXPORT unzClose (file)
- unzFile file;
-{
- unz_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- if (s->pfile_in_zip_read!=NULL)
- unzCloseCurrentFile(file);
-
- ZCLOSE(s->z_filefunc, s->filestream);
- TRYFREE(s);
- return UNZ_OK;
-}
-
-
-/*
- Write info about the ZipFile in the *pglobal_info structure.
- No preparation of the structure is needed
- return UNZ_OK if there is no problem. */
-extern int ZEXPORT unzGetGlobalInfo (file,pglobal_info)
- unzFile file;
- unz_global_info *pglobal_info;
-{
- unz_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- *pglobal_info=s->gi;
- return UNZ_OK;
-}
-
-
-/*
- Translate date/time from Dos format to tm_unz (readable more easilty)
-*/
-local void unzlocal_DosDateToTmuDate (ulDosDate, ptm)
- uLong ulDosDate;
- tm_unz* ptm;
-{
- uLong uDate;
- uDate = (uLong)(ulDosDate>>16);
- ptm->tm_mday = (uInt)(uDate&0x1f) ;
- ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ;
- ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ;
-
- ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800);
- ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ;
- ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ;
-}
-
-/*
- Get Info about the current file in the zipfile, with internal only info
-*/
-local int unzlocal_GetCurrentFileInfoInternal OF((unzFile file,
- unz_file_info *pfile_info,
- unz_file_info_internal
- *pfile_info_internal,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize));
-
-local int unzlocal_GetCurrentFileInfoInternal (file,
- pfile_info,
- pfile_info_internal,
- szFileName, fileNameBufferSize,
- extraField, extraFieldBufferSize,
- szComment, commentBufferSize)
- unzFile file;
- unz_file_info *pfile_info;
- unz_file_info_internal *pfile_info_internal;
- char *szFileName;
- uLong fileNameBufferSize;
- void *extraField;
- uLong extraFieldBufferSize;
- char *szComment;
- uLong commentBufferSize;
-{
- unz_s* s;
- unz_file_info file_info;
- unz_file_info_internal file_info_internal;
- int err=UNZ_OK;
- uLong uMagic;
- long lSeek=0;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- if (ZSEEK(s->z_filefunc, s->filestream,
- s->pos_in_central_dir+s->byte_before_the_zipfile,
- ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=UNZ_ERRNO;
-
-
- /* we check the magic */
- if (err==UNZ_OK)
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
- err=UNZ_ERRNO;
- else if (uMagic!=0x02014b50)
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
- err=UNZ_ERRNO;
-
- unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
- err=UNZ_ERRNO;
-
- lSeek+=file_info.size_filename;
- if ((err==UNZ_OK) && (szFileName!=NULL))
- {
- uLong uSizeRead ;
- if (file_info.size_filename<fileNameBufferSize)
- {
- *(szFileName+file_info.size_filename)='\0';
- uSizeRead = file_info.size_filename;
- }
- else
- uSizeRead = fileNameBufferSize;
-
- if ((file_info.size_filename>0) && (fileNameBufferSize>0))
- if (ZREAD(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek -= uSizeRead;
- }
-
-
- if ((err==UNZ_OK) && (extraField!=NULL))
- {
- uLong uSizeRead ;
- if (file_info.size_file_extra<extraFieldBufferSize)
- uSizeRead = file_info.size_file_extra;
- else
- uSizeRead = extraFieldBufferSize;
-
- if (lSeek!=0)
- if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
- lSeek=0;
- else
- err=UNZ_ERRNO;
- if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
- if (ZREAD(s->z_filefunc, s->filestream,extraField,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek += file_info.size_file_extra - uSizeRead;
- }
- else
- lSeek+=file_info.size_file_extra;
-
-
- if ((err==UNZ_OK) && (szComment!=NULL))
- {
- uLong uSizeRead ;
- if (file_info.size_file_comment<commentBufferSize)
- {
- *(szComment+file_info.size_file_comment)='\0';
- uSizeRead = file_info.size_file_comment;
- }
- else
- uSizeRead = commentBufferSize;
-
- if (lSeek!=0)
- if (ZSEEK(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
- lSeek=0;
- else
- err=UNZ_ERRNO;
- if ((file_info.size_file_comment>0) && (commentBufferSize>0))
- if (ZREAD(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek+=file_info.size_file_comment - uSizeRead;
- }
- else
- lSeek+=file_info.size_file_comment;
-
- if ((err==UNZ_OK) && (pfile_info!=NULL))
- *pfile_info=file_info;
-
- if ((err==UNZ_OK) && (pfile_info_internal!=NULL))
- *pfile_info_internal=file_info_internal;
-
- return err;
-}
-
-
-
-/*
- Write info about the ZipFile in the *pglobal_info structure.
- No preparation of the structure is needed
- return UNZ_OK if there is no problem.
-*/
-extern int ZEXPORT unzGetCurrentFileInfo (file,
- pfile_info,
- szFileName, fileNameBufferSize,
- extraField, extraFieldBufferSize,
- szComment, commentBufferSize)
- unzFile file;
- unz_file_info *pfile_info;
- char *szFileName;
- uLong fileNameBufferSize;
- void *extraField;
- uLong extraFieldBufferSize;
- char *szComment;
- uLong commentBufferSize;
-{
- return unzlocal_GetCurrentFileInfoInternal(file,pfile_info,NULL,
- szFileName,fileNameBufferSize,
- extraField,extraFieldBufferSize,
- szComment,commentBufferSize);
-}
-
-/*
- Set the current file of the zipfile to the first file.
- return UNZ_OK if there is no problem
-*/
-extern int ZEXPORT unzGoToFirstFile (file)
- unzFile file;
-{
- int err=UNZ_OK;
- unz_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- s->pos_in_central_dir=s->offset_central_dir;
- s->num_file=0;
- err=unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-/*
- Set the current file of the zipfile to the next file.
- return UNZ_OK if there is no problem
- return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
-*/
-extern int ZEXPORT unzGoToNextFile (file)
- unzFile file;
-{
- unz_s* s;
- int err;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
- if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */
- if (s->num_file+1==s->gi.number_entry)
- return UNZ_END_OF_LIST_OF_FILE;
-
- s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
- s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ;
- s->num_file++;
- err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-
-/*
- Try locate the file szFileName in the zipfile.
- For the iCaseSensitivity signification, see unzipStringFileNameCompare
-
- return value :
- UNZ_OK if the file is found. It becomes the current file.
- UNZ_END_OF_LIST_OF_FILE if the file is not found
-*/
-extern int ZEXPORT unzLocateFile (file, szFileName, iCaseSensitivity)
- unzFile file;
- const char *szFileName;
- int iCaseSensitivity;
-{
- unz_s* s;
- int err;
-
- /* We remember the 'current' position in the file so that we can jump
- * back there if we fail.
- */
- unz_file_info cur_file_infoSaved;
- unz_file_info_internal cur_file_info_internalSaved;
- uLong num_fileSaved;
- uLong pos_in_central_dirSaved;
-
-
- if (file==NULL)
- return UNZ_PARAMERROR;
-
- if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
- return UNZ_PARAMERROR;
-
- s=(unz_s*)file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
-
- /* Save the current state */
- num_fileSaved = s->num_file;
- pos_in_central_dirSaved = s->pos_in_central_dir;
- cur_file_infoSaved = s->cur_file_info;
- cur_file_info_internalSaved = s->cur_file_info_internal;
-
- err = unzGoToFirstFile(file);
-
- while (err == UNZ_OK)
- {
- char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
- err = unzGetCurrentFileInfo(file,NULL,
- szCurrentFileName,sizeof(szCurrentFileName)-1,
- NULL,0,NULL,0);
- if (err == UNZ_OK)
- {
- if (unzStringFileNameCompare(szCurrentFileName,
- szFileName,iCaseSensitivity)==0)
- return UNZ_OK;
- err = unzGoToNextFile(file);
- }
- }
-
- /* We failed, so restore the state of the 'current file' to where we
- * were.
- */
- s->num_file = num_fileSaved ;
- s->pos_in_central_dir = pos_in_central_dirSaved ;
- s->cur_file_info = cur_file_infoSaved;
- s->cur_file_info_internal = cur_file_info_internalSaved;
- return err;
-}
-
-
-/*
-///////////////////////////////////////////
-// Contributed by Ryan Haksi (mailto://cryogen@infoserve.net)
-// I need random access
-//
-// Further optimization could be realized by adding an ability
-// to cache the directory in memory. The goal being a single
-// comprehensive file read to put the file I need in a memory.
-*/
-
-/*
-typedef struct unz_file_pos_s
-{
- uLong pos_in_zip_directory; // offset in file
- uLong num_of_file; // # of file
-} unz_file_pos;
-*/
-
-extern int ZEXPORT unzGetFilePos(file, file_pos)
- unzFile file;
- unz_file_pos* file_pos;
-{
- unz_s* s;
-
- if (file==NULL || file_pos==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
-
- file_pos->pos_in_zip_directory = s->pos_in_central_dir;
- file_pos->num_of_file = s->num_file;
-
- return UNZ_OK;
-}
-
-extern int ZEXPORT unzGoToFilePos(file, file_pos)
- unzFile file;
- unz_file_pos* file_pos;
-{
- unz_s* s;
- int err;
-
- if (file==NULL || file_pos==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- /* jump to the right spot */
- s->pos_in_central_dir = file_pos->pos_in_zip_directory;
- s->num_file = file_pos->num_of_file;
-
- /* set the current file */
- err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- /* return results */
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-/*
-// Unzip Helper Functions - should be here?
-///////////////////////////////////////////
-*/
-
-/*
- Read the local header of the current zipfile
- Check the coherency of the local header and info in the end of central
- directory about this file
- store in *piSizeVar the size of extra info in local header
- (filename and size of extra field data)
-*/
-local int unzlocal_CheckCurrentFileCoherencyHeader (s,piSizeVar,
- poffset_local_extrafield,
- psize_local_extrafield)
- unz_s* s;
- uInt* piSizeVar;
- uLong *poffset_local_extrafield;
- uInt *psize_local_extrafield;
-{
- uLong uMagic,uData,uFlags;
- uLong size_filename;
- uLong size_extra_field;
- int err=UNZ_OK;
-
- *piSizeVar = 0;
- *poffset_local_extrafield = 0;
- *psize_local_extrafield = 0;
-
- if (ZSEEK(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile +
- s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
-
- if (err==UNZ_OK)
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
- err=UNZ_ERRNO;
- else if (uMagic!=0x04034b50)
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
- err=UNZ_ERRNO;
-/*
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion))
- err=UNZ_BADZIPFILE;
-*/
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method))
- err=UNZ_BADZIPFILE;
-
- if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) &&
- (s->cur_file_info.compression_method!=Z_DEFLATED))
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) &&
- ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) &&
- ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) &&
- ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK)
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename))
- err=UNZ_BADZIPFILE;
-
- *piSizeVar += (uInt)size_filename;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK)
- err=UNZ_ERRNO;
- *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile +
- SIZEZIPLOCALHEADER + size_filename;
- *psize_local_extrafield = (uInt)size_extra_field;
-
- *piSizeVar += (uInt)size_extra_field;
-
- return err;
-}
-
-/*
- Open for reading data the current file in the zipfile.
- If there is no error and the file is opened, the return value is UNZ_OK.
-*/
-extern int ZEXPORT unzOpenCurrentFile3 (file, method, level, raw, password)
- unzFile file;
- int* method;
- int* level;
- int raw;
- const char* password;
-{
- int err=UNZ_OK;
- uInt iSizeVar;
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- uLong offset_local_extrafield; /* offset of the local extra field */
- uInt size_local_extrafield; /* size of the local extra field */
-# ifndef NOUNCRYPT
- char source[12];
-# else
- if (password != NULL)
- return UNZ_PARAMERROR;
-# endif
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- if (!s->current_file_ok)
- return UNZ_PARAMERROR;
-
- if (s->pfile_in_zip_read != NULL)
- unzCloseCurrentFile(file);
-
- if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
- &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
- return UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info = (file_in_zip_read_info_s*)
- ALLOC(sizeof(file_in_zip_read_info_s));
- if (pfile_in_zip_read_info==NULL)
- return UNZ_INTERNALERROR;
-
- pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
- pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
- pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
- pfile_in_zip_read_info->pos_local_extrafield=0;
- pfile_in_zip_read_info->raw=raw;
-
- if (pfile_in_zip_read_info->read_buffer==NULL)
- {
- TRYFREE(pfile_in_zip_read_info);
- return UNZ_INTERNALERROR;
- }
-
- pfile_in_zip_read_info->stream_initialised=0;
-
- if (method!=NULL)
- *method = (int)s->cur_file_info.compression_method;
-
- if (level!=NULL)
- {
- *level = 6;
- switch (s->cur_file_info.flag & 0x06)
- {
- case 6 : *level = 1; break;
- case 4 : *level = 2; break;
- case 2 : *level = 9; break;
- }
- }
-
- if ((s->cur_file_info.compression_method!=0) &&
- (s->cur_file_info.compression_method!=Z_DEFLATED))
- err=UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
- pfile_in_zip_read_info->crc32=0;
- pfile_in_zip_read_info->compression_method =
- s->cur_file_info.compression_method;
- pfile_in_zip_read_info->filestream=s->filestream;
- pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
- pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
-
- pfile_in_zip_read_info->stream.total_out = 0;
-
- if ((s->cur_file_info.compression_method==Z_DEFLATED) &&
- (!raw))
- {
- pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
- pfile_in_zip_read_info->stream.zfree = (free_func)0;
- pfile_in_zip_read_info->stream.opaque = (voidpf)0;
- pfile_in_zip_read_info->stream.next_in = (voidpf)0;
- pfile_in_zip_read_info->stream.avail_in = 0;
-
- err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
- if (err == Z_OK)
- pfile_in_zip_read_info->stream_initialised=1;
- else
- {
- TRYFREE(pfile_in_zip_read_info);
- return err;
- }
- /* windowBits is passed < 0 to tell that there is no zlib header.
- * Note that in this case inflate *requires* an extra "dummy" byte
- * after the compressed stream in order to complete decompression and
- * return Z_STREAM_END.
- * In unzip, i don't wait absolutely Z_STREAM_END because I known the
- * size of both compressed and uncompressed data
- */
- }
- pfile_in_zip_read_info->rest_read_compressed =
- s->cur_file_info.compressed_size ;
- pfile_in_zip_read_info->rest_read_uncompressed =
- s->cur_file_info.uncompressed_size ;
-
-
- pfile_in_zip_read_info->pos_in_zipfile =
- s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
- iSizeVar;
-
- pfile_in_zip_read_info->stream.avail_in = (uInt)0;
-
- s->pfile_in_zip_read = pfile_in_zip_read_info;
-
-# ifndef NOUNCRYPT
- if (password != NULL)
- {
- int i;
- s->pcrc_32_tab = get_crc_table();
- init_keys(password,s->keys,s->pcrc_32_tab);
- if (ZSEEK(s->z_filefunc, s->filestream,
- s->pfile_in_zip_read->pos_in_zipfile +
- s->pfile_in_zip_read->byte_before_the_zipfile,
- SEEK_SET)!=0)
- return UNZ_INTERNALERROR;
- if(ZREAD(s->z_filefunc, s->filestream,source, 12)<12)
- return UNZ_INTERNALERROR;
-
- for (i = 0; i<12; i++)
- zdecode(s->keys,s->pcrc_32_tab,source[i]);
-
- s->pfile_in_zip_read->pos_in_zipfile+=12;
- s->encrypted=1;
- }
-# endif
-
-
- return UNZ_OK;
-}
-
-extern int ZEXPORT unzOpenCurrentFile (file)
- unzFile file;
-{
- return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
-}
-
-extern int ZEXPORT unzOpenCurrentFilePassword (file, password)
- unzFile file;
- const char* password;
-{
- return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
-}
-
-extern int ZEXPORT unzOpenCurrentFile2 (file,method,level,raw)
- unzFile file;
- int* method;
- int* level;
- int raw;
-{
- return unzOpenCurrentFile3(file, method, level, raw, NULL);
-}
-
-/*
- Read bytes from the current file.
- buf contain buffer where data must be copied
- len the size of buf.
-
- return the number of byte copied if somes bytes are copied
- return 0 if the end of file was reached
- return <0 with error code if there is an error
- (UNZ_ERRNO for IO error, or zLib error for uncompress error)
-*/
-extern int ZEXPORT unzReadCurrentFile (file, buf, len)
- unzFile file;
- voidp buf;
- unsigned len;
-{
- int err=UNZ_OK;
- uInt iRead = 0;
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
-
- if ((pfile_in_zip_read_info->read_buffer == NULL))
- return UNZ_END_OF_LIST_OF_FILE;
- if (len==0)
- return 0;
-
- pfile_in_zip_read_info->stream.next_out = (Bytef*)buf;
-
- pfile_in_zip_read_info->stream.avail_out = (uInt)len;
-
- if ((len>pfile_in_zip_read_info->rest_read_uncompressed) &&
- (!(pfile_in_zip_read_info->raw)))
- pfile_in_zip_read_info->stream.avail_out =
- (uInt)pfile_in_zip_read_info->rest_read_uncompressed;
-
- if ((len>pfile_in_zip_read_info->rest_read_compressed+
- pfile_in_zip_read_info->stream.avail_in) &&
- (pfile_in_zip_read_info->raw))
- pfile_in_zip_read_info->stream.avail_out =
- (uInt)pfile_in_zip_read_info->rest_read_compressed+
- pfile_in_zip_read_info->stream.avail_in;
-
- while (pfile_in_zip_read_info->stream.avail_out>0)
- {
- if ((pfile_in_zip_read_info->stream.avail_in==0) &&
- (pfile_in_zip_read_info->rest_read_compressed>0))
- {
- uInt uReadThis = UNZ_BUFSIZE;
- if (pfile_in_zip_read_info->rest_read_compressed<uReadThis)
- uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed;
- if (uReadThis == 0)
- return UNZ_EOF;
- if (ZSEEK(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- pfile_in_zip_read_info->pos_in_zipfile +
- pfile_in_zip_read_info->byte_before_the_zipfile,
- ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
- if (ZREAD(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- pfile_in_zip_read_info->read_buffer,
- uReadThis)!=uReadThis)
- return UNZ_ERRNO;
-
-
-# ifndef NOUNCRYPT
- if(s->encrypted)
- {
- uInt i;
- for(i=0;i<uReadThis;i++)
- pfile_in_zip_read_info->read_buffer[i] =
- zdecode(s->keys,s->pcrc_32_tab,
- pfile_in_zip_read_info->read_buffer[i]);
- }
-# endif
-
-
- pfile_in_zip_read_info->pos_in_zipfile += uReadThis;
-
- pfile_in_zip_read_info->rest_read_compressed-=uReadThis;
-
- pfile_in_zip_read_info->stream.next_in =
- (Bytef*)pfile_in_zip_read_info->read_buffer;
- pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis;
- }
-
- if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw))
- {
- uInt uDoCopy,i ;
-
- if ((pfile_in_zip_read_info->stream.avail_in == 0) &&
- (pfile_in_zip_read_info->rest_read_compressed == 0))
- return (iRead==0) ? UNZ_EOF : iRead;
-
- if (pfile_in_zip_read_info->stream.avail_out <
- pfile_in_zip_read_info->stream.avail_in)
- uDoCopy = pfile_in_zip_read_info->stream.avail_out ;
- else
- uDoCopy = pfile_in_zip_read_info->stream.avail_in ;
-
- for (i=0;i<uDoCopy;i++)
- *(pfile_in_zip_read_info->stream.next_out+i) =
- *(pfile_in_zip_read_info->stream.next_in+i);
-
- pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,
- pfile_in_zip_read_info->stream.next_out,
- uDoCopy);
- pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy;
- pfile_in_zip_read_info->stream.avail_in -= uDoCopy;
- pfile_in_zip_read_info->stream.avail_out -= uDoCopy;
- pfile_in_zip_read_info->stream.next_out += uDoCopy;
- pfile_in_zip_read_info->stream.next_in += uDoCopy;
- pfile_in_zip_read_info->stream.total_out += uDoCopy;
- iRead += uDoCopy;
- }
- else
- {
- uLong uTotalOutBefore,uTotalOutAfter;
- const Bytef *bufBefore;
- uLong uOutThis;
- int flush=Z_SYNC_FLUSH;
-
- uTotalOutBefore = pfile_in_zip_read_info->stream.total_out;
- bufBefore = pfile_in_zip_read_info->stream.next_out;
-
- /*
- if ((pfile_in_zip_read_info->rest_read_uncompressed ==
- pfile_in_zip_read_info->stream.avail_out) &&
- (pfile_in_zip_read_info->rest_read_compressed == 0))
- flush = Z_FINISH;
- */
- err=inflate(&pfile_in_zip_read_info->stream,flush);
-
- if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL))
- err = Z_DATA_ERROR;
-
- uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
- uOutThis = uTotalOutAfter-uTotalOutBefore;
-
- pfile_in_zip_read_info->crc32 =
- crc32(pfile_in_zip_read_info->crc32,bufBefore,
- (uInt)(uOutThis));
-
- pfile_in_zip_read_info->rest_read_uncompressed -=
- uOutThis;
-
- iRead += (uInt)(uTotalOutAfter - uTotalOutBefore);
-
- if (err==Z_STREAM_END)
- return (iRead==0) ? UNZ_EOF : iRead;
- if (err!=Z_OK)
- break;
- }
- }
-
- if (err==Z_OK)
- return iRead;
- return err;
-}
-
-
-/*
- Give the current position in uncompressed data
-*/
-extern z_off_t ZEXPORT unztell (file)
- unzFile file;
-{
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
- return (z_off_t)pfile_in_zip_read_info->stream.total_out;
-}
-
-
-/*
- return 1 if the end of file was reached, 0 elsewhere
-*/
-extern int ZEXPORT unzeof (file)
- unzFile file;
-{
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
- if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
- return 1;
- else
- return 0;
-}
-
-
-
-/*
- Read extra field from the current file (opened by unzOpenCurrentFile)
- This is the local-header version of the extra field (sometimes, there is
- more info in the local-header version than in the central-header)
-
- if buf==NULL, it return the size of the local extra field that can be read
-
- if buf!=NULL, len is the size of the buffer, the extra header is copied in
- buf.
- the return value is the number of bytes copied in buf, or (if <0)
- the error code
-*/
-extern int ZEXPORT unzGetLocalExtrafield (file,buf,len)
- unzFile file;
- voidp buf;
- unsigned len;
-{
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- uInt read_now;
- uLong size_to_read;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
- size_to_read = (pfile_in_zip_read_info->size_local_extrafield -
- pfile_in_zip_read_info->pos_local_extrafield);
-
- if (buf==NULL)
- return (int)size_to_read;
-
- if (len>size_to_read)
- read_now = (uInt)size_to_read;
- else
- read_now = (uInt)len ;
-
- if (read_now==0)
- return 0;
-
- if (ZSEEK(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- pfile_in_zip_read_info->offset_local_extrafield +
- pfile_in_zip_read_info->pos_local_extrafield,
- ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
- if (ZREAD(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- buf,read_now)!=read_now)
- return UNZ_ERRNO;
-
- return (int)read_now;
-}
-
-/*
- Close the file in zip opened with unzipOpenCurrentFile
- Return UNZ_CRCERROR if all the file was read but the CRC is not good
-*/
-extern int ZEXPORT unzCloseCurrentFile (file)
- unzFile file;
-{
- int err=UNZ_OK;
-
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
-
- if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
- (!pfile_in_zip_read_info->raw))
- {
- if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
- err=UNZ_CRCERROR;
- }
-
-
- TRYFREE(pfile_in_zip_read_info->read_buffer);
- pfile_in_zip_read_info->read_buffer = NULL;
- if (pfile_in_zip_read_info->stream_initialised)
- inflateEnd(&pfile_in_zip_read_info->stream);
-
- pfile_in_zip_read_info->stream_initialised = 0;
- TRYFREE(pfile_in_zip_read_info);
-
- s->pfile_in_zip_read=NULL;
-
- return err;
-}
-
-
-/*
- Get the global comment string of the ZipFile, in the szComment buffer.
- uSizeBuf is the size of the szComment buffer.
- return the number of byte copied or an error code <0
-*/
-extern int ZEXPORT unzGetGlobalComment (file, szComment, uSizeBuf)
- unzFile file;
- char *szComment;
- uLong uSizeBuf;
-{
- int err=UNZ_OK;
- unz_s* s;
- uLong uReadThis ;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- uReadThis = uSizeBuf;
- if (uReadThis>s->gi.size_comment)
- uReadThis = s->gi.size_comment;
-
- if (ZSEEK(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
- if (uReadThis>0)
- {
- *szComment='\0';
- if (ZREAD(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis)
- return UNZ_ERRNO;
- }
-
- if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment))
- *(szComment+s->gi.size_comment)='\0';
- return (int)uReadThis;
-}
-
-/* Additions by RX '2004 */
-extern uLong ZEXPORT unzGetOffset (file)
- unzFile file;
-{
- unz_s* s;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- if (!s->current_file_ok)
- return 0;
- if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff)
- if (s->num_file==s->gi.number_entry)
- return 0;
- return s->pos_in_central_dir;
-}
-
-extern int ZEXPORT unzSetOffset (file, pos)
- unzFile file;
- uLong pos;
-{
- unz_s* s;
- int err;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- s->pos_in_central_dir = pos;
- s->num_file = s->gi.number_entry; /* hack */
- err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
+++ /dev/null
-/* unzip.h -- IO for uncompress .zip files using zlib
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-
- This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g
- WinZip, InfoZip tools and compatible.
-
- Multi volume ZipFile (span) are not supported.
- Encryption compatible with pkzip 2.04g only supported
- Old compressions used by old PKZip 1.x are not supported
-
-
- I WAIT FEEDBACK at mail info@winimage.com
- Visit also http://www.winimage.com/zLibDll/unzip.htm for evolution
-
- Condition of use and distribution are the same than zlib :
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
-
-*/
-
-/* for more info about .ZIP format, see
- http://www.info-zip.org/pub/infozip/doc/appnote-981119-iz.zip
- http://www.info-zip.org/pub/infozip/doc/
- PkWare has also a specification at :
- ftp://ftp.pkware.com/probdesc.zip
-*/
-
-#ifndef _unz_H
-#define _unz_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef _ZLIB_H
-#include "zlib.h"
-#endif
-
-#ifndef _ZLIBIOAPI_H
-#include "ioapi.h"
-#endif
-
-#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
-/* like the STRICT of WIN32, we define a pointer that cannot be converted
- from (void*) without cast */
-typedef struct TagunzFile__ { int unused; } unzFile__;
-typedef unzFile__ *unzFile;
-#else
-typedef voidp unzFile;
-#endif
-
-
-#define UNZ_OK (0)
-#define UNZ_END_OF_LIST_OF_FILE (-100)
-#define UNZ_ERRNO (Z_ERRNO)
-#define UNZ_EOF (0)
-#define UNZ_PARAMERROR (-102)
-#define UNZ_BADZIPFILE (-103)
-#define UNZ_INTERNALERROR (-104)
-#define UNZ_CRCERROR (-105)
-
-/* tm_unz contain date/time info */
-typedef struct tm_unz_s
-{
- uInt tm_sec; /* seconds after the minute - [0,59] */
- uInt tm_min; /* minutes after the hour - [0,59] */
- uInt tm_hour; /* hours since midnight - [0,23] */
- uInt tm_mday; /* day of the month - [1,31] */
- uInt tm_mon; /* months since January - [0,11] */
- uInt tm_year; /* years - [1980..2044] */
-} tm_unz;
-
-/* unz_global_info structure contain global data about the ZIPfile
- These data comes from the end of central dir */
-typedef struct unz_global_info_s
-{
- uLong number_entry; /* total number of entries in
- the central dir on this disk */
- uLong size_comment; /* size of the global comment of the zipfile */
-} unz_global_info;
-
-
-/* unz_file_info contain information about a file in the zipfile */
-typedef struct unz_file_info_s
-{
- uLong version; /* version made by 2 bytes */
- uLong version_needed; /* version needed to extract 2 bytes */
- uLong flag; /* general purpose bit flag 2 bytes */
- uLong compression_method; /* compression method 2 bytes */
- uLong dosDate; /* last mod file date in Dos fmt 4 bytes */
- uLong crc; /* crc-32 4 bytes */
- uLong compressed_size; /* compressed size 4 bytes */
- uLong uncompressed_size; /* uncompressed size 4 bytes */
- uLong size_filename; /* filename length 2 bytes */
- uLong size_file_extra; /* extra field length 2 bytes */
- uLong size_file_comment; /* file comment length 2 bytes */
-
- uLong disk_num_start; /* disk number start 2 bytes */
- uLong internal_fa; /* internal file attributes 2 bytes */
- uLong external_fa; /* external file attributes 4 bytes */
-
- tm_unz tmu_date;
-} unz_file_info;
-
-extern int ZEXPORT unzStringFileNameCompare OF ((const char* fileName1,
- const char* fileName2,
- int iCaseSensitivity));
-/*
- Compare two filename (fileName1,fileName2).
- If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
- If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
- or strcasecmp)
- If iCaseSensitivity = 0, case sensitivity is default of your operating system
- (like 1 on Unix, 2 on Windows)
-*/
-
-
-extern unzFile ZEXPORT unzOpen OF((const char *path));
-/*
- Open a Zip file. path contain the full pathname (by example,
- on a Windows XP computer "c:\\zlib\\zlib113.zip" or on an Unix computer
- "zlib/zlib113.zip".
- If the zipfile cannot be opened (file don't exist or in not valid), the
- return value is NULL.
- Else, the return value is a unzFile Handle, usable with other function
- of this unzip package.
-*/
-
-extern unzFile ZEXPORT unzOpen2 OF((const char *path,
- zlib_filefunc_def* pzlib_filefunc_def));
-/*
- Open a Zip file, like unzOpen, but provide a set of file low level API
- for read/write the zip file (see ioapi.h)
-*/
-
-extern int ZEXPORT unzClose OF((unzFile file));
-/*
- Close a ZipFile opened with unzipOpen.
- If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
- these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
- return UNZ_OK if there is no problem. */
-
-extern int ZEXPORT unzGetGlobalInfo OF((unzFile file,
- unz_global_info *pglobal_info));
-/*
- Write info about the ZipFile in the *pglobal_info structure.
- No preparation of the structure is needed
- return UNZ_OK if there is no problem. */
-
-
-extern int ZEXPORT unzGetGlobalComment OF((unzFile file,
- char *szComment,
- uLong uSizeBuf));
-/*
- Get the global comment string of the ZipFile, in the szComment buffer.
- uSizeBuf is the size of the szComment buffer.
- return the number of byte copied or an error code <0
-*/
-
-
-/***************************************************************************/
-/* Unzip package allow you browse the directory of the zipfile */
-
-extern int ZEXPORT unzGoToFirstFile OF((unzFile file));
-/*
- Set the current file of the zipfile to the first file.
- return UNZ_OK if there is no problem
-*/
-
-extern int ZEXPORT unzGoToNextFile OF((unzFile file));
-/*
- Set the current file of the zipfile to the next file.
- return UNZ_OK if there is no problem
- return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
-*/
-
-extern int ZEXPORT unzLocateFile OF((unzFile file,
- const char *szFileName,
- int iCaseSensitivity));
-/*
- Try locate the file szFileName in the zipfile.
- For the iCaseSensitivity signification, see unzStringFileNameCompare
-
- return value :
- UNZ_OK if the file is found. It becomes the current file.
- UNZ_END_OF_LIST_OF_FILE if the file is not found
-*/
-
-
-/* ****************************************** */
-/* Ryan supplied functions */
-/* unz_file_info contain information about a file in the zipfile */
-typedef struct unz_file_pos_s
-{
- uLong pos_in_zip_directory; /* offset in zip file directory */
- uLong num_of_file; /* # of file */
-} unz_file_pos;
-
-extern int ZEXPORT unzGetFilePos(
- unzFile file,
- unz_file_pos* file_pos);
-
-extern int ZEXPORT unzGoToFilePos(
- unzFile file,
- unz_file_pos* file_pos);
-
-/* ****************************************** */
-
-extern int ZEXPORT unzGetCurrentFileInfo OF((unzFile file,
- unz_file_info *pfile_info,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize));
-/*
- Get Info about the current file
- if pfile_info!=NULL, the *pfile_info structure will contain somes info about
- the current file
- if szFileName!=NULL, the filemane string will be copied in szFileName
- (fileNameBufferSize is the size of the buffer)
- if extraField!=NULL, the extra field information will be copied in extraField
- (extraFieldBufferSize is the size of the buffer).
- This is the Central-header version of the extra field
- if szComment!=NULL, the comment string of the file will be copied in szComment
- (commentBufferSize is the size of the buffer)
-*/
-
-/***************************************************************************/
-/* for reading the content of the current zipfile, you can open it, read data
- from it, and close it (you can close it before reading all the file)
- */
-
-extern int ZEXPORT unzOpenCurrentFile OF((unzFile file));
-/*
- Open for reading data the current file in the zipfile.
- If there is no error, the return value is UNZ_OK.
-*/
-
-extern int ZEXPORT unzOpenCurrentFilePassword OF((unzFile file,
- const char* password));
-/*
- Open for reading data the current file in the zipfile.
- password is a crypting password
- If there is no error, the return value is UNZ_OK.
-*/
-
-extern int ZEXPORT unzOpenCurrentFile2 OF((unzFile file,
- int* method,
- int* level,
- int raw));
-/*
- Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
- if raw==1
- *method will receive method of compression, *level will receive level of
- compression
- note : you can set level parameter as NULL (if you did not want known level,
- but you CANNOT set method parameter as NULL
-*/
-
-extern int ZEXPORT unzOpenCurrentFile3 OF((unzFile file,
- int* method,
- int* level,
- int raw,
- const char* password));
-/*
- Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
- if raw==1
- *method will receive method of compression, *level will receive level of
- compression
- note : you can set level parameter as NULL (if you did not want known level,
- but you CANNOT set method parameter as NULL
-*/
-
-
-extern int ZEXPORT unzCloseCurrentFile OF((unzFile file));
-/*
- Close the file in zip opened with unzOpenCurrentFile
- Return UNZ_CRCERROR if all the file was read but the CRC is not good
-*/
-
-extern int ZEXPORT unzReadCurrentFile OF((unzFile file,
- voidp buf,
- unsigned len));
-/*
- Read bytes from the current file (opened by unzOpenCurrentFile)
- buf contain buffer where data must be copied
- len the size of buf.
-
- return the number of byte copied if somes bytes are copied
- return 0 if the end of file was reached
- return <0 with error code if there is an error
- (UNZ_ERRNO for IO error, or zLib error for uncompress error)
-*/
-
-extern z_off_t ZEXPORT unztell OF((unzFile file));
-/*
- Give the current position in uncompressed data
-*/
-
-extern int ZEXPORT unzeof OF((unzFile file));
-/*
- return 1 if the end of file was reached, 0 elsewhere
-*/
-
-extern int ZEXPORT unzGetLocalExtrafield OF((unzFile file,
- voidp buf,
- unsigned len));
-/*
- Read extra field from the current file (opened by unzOpenCurrentFile)
- This is the local-header version of the extra field (sometimes, there is
- more info in the local-header version than in the central-header)
-
- if buf==NULL, it return the size of the local extra field
-
- if buf!=NULL, len is the size of the buffer, the extra header is copied in
- buf.
- the return value is the number of bytes copied in buf, or (if <0)
- the error code
-*/
-
-/***************************************************************************/
-
-/* Get the current file offset */
-extern uLong ZEXPORT unzGetOffset (unzFile file);
-
-/* Set the current file offset */
-extern int ZEXPORT unzSetOffset (unzFile file, uLong pos);
-
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _unz_H */
+++ /dev/null
-/* zip.c -- IO on .zip files using zlib
- Version 1.01e, February 12th, 2005
-
- 27 Dec 2004 Rolf Kalbermatter
- Modification to zipOpen2 to support globalComment retrieval.
-
- Copyright (C) 1998-2005 Gilles Vollant
-
- Read zip.h for more info
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include "zlib.h"
-#include "zip.h"
-
-#ifdef STDC
-# include <stddef.h>
-# include <string.h>
-# include <stdlib.h>
-#endif
-#ifdef NO_ERRNO_H
- extern int errno;
-#else
-# include <errno.h>
-#endif
-
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-#ifndef VERSIONMADEBY
-# define VERSIONMADEBY (0x0) /* platform depedent */
-#endif
-
-#ifndef Z_BUFSIZE
-#define Z_BUFSIZE (16384)
-#endif
-
-#ifndef Z_MAXFILENAMEINZIP
-#define Z_MAXFILENAMEINZIP (256)
-#endif
-
-#ifndef ALLOC
-# define ALLOC(size) (malloc(size))
-#endif
-#ifndef TRYFREE
-# define TRYFREE(p) {if (p) free(p);}
-#endif
-
-/*
-#define SIZECENTRALDIRITEM (0x2e)
-#define SIZEZIPLOCALHEADER (0x1e)
-*/
-
-/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
-
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-
-#ifndef SEEK_END
-#define SEEK_END 2
-#endif
-
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-
-#ifndef DEF_MEM_LEVEL
-#if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-#else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-#endif
-#endif
-const char zip_copyright[] =
- " zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
-
-
-#define SIZEDATA_INDATABLOCK (4096-(4*4))
-
-#define LOCALHEADERMAGIC (0x04034b50)
-#define CENTRALHEADERMAGIC (0x02014b50)
-#define ENDHEADERMAGIC (0x06054b50)
-
-#define FLAG_LOCALHEADER_OFFSET (0x06)
-#define CRC_LOCALHEADER_OFFSET (0x0e)
-
-#define SIZECENTRALHEADER (0x2e) /* 46 */
-
-typedef struct linkedlist_datablock_internal_s
-{
- struct linkedlist_datablock_internal_s* next_datablock;
- uLong avail_in_this_block;
- uLong filled_in_this_block;
- uLong unused; /* for future use and alignment */
- unsigned char data[SIZEDATA_INDATABLOCK];
-} linkedlist_datablock_internal;
-
-typedef struct linkedlist_data_s
-{
- linkedlist_datablock_internal* first_block;
- linkedlist_datablock_internal* last_block;
-} linkedlist_data;
-
-
-typedef struct
-{
- z_stream stream; /* zLib stream structure for inflate */
- int stream_initialised; /* 1 is stream is initialised */
- uInt pos_in_buffered_data; /* last written byte in buffered_data */
-
- uLong pos_local_header; /* offset of the local header of the file
- currently writing */
- char* central_header; /* central header data for the current file */
- uLong size_centralheader; /* size of the central header for cur file */
- uLong flag; /* flag of the file currently writing */
-
- int method; /* compression method of file currently wr.*/
- int raw; /* 1 for directly writing raw data */
- Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
- uLong dosDate;
- uLong crc32;
- int encrypt;
-#ifndef NOCRYPT
- unsigned long keys[3]; /* keys defining the pseudo-random sequence */
- const unsigned long* pcrc_32_tab;
- int crypt_header_size;
-#endif
-} curfile_info;
-
-typedef struct
-{
- zlib_filefunc_def z_filefunc;
- voidpf filestream; /* io structore of the zipfile */
- linkedlist_data central_dir;/* datablock with central dir in construction*/
- int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/
- curfile_info ci; /* info on the file curretly writing */
-
- uLong begin_pos; /* position of the beginning of the zipfile */
- uLong add_position_when_writting_offset;
- uLong number_entry;
-#ifndef NO_ADDFILEINEXISTINGZIP
- char *globalcomment;
-#endif
-} zip_internal;
-
-
-
-#ifndef NOCRYPT
-#define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
-#include "crypt.h"
-#endif
-
-local linkedlist_datablock_internal* allocate_new_datablock()
-{
- linkedlist_datablock_internal* ldi;
- ldi = (linkedlist_datablock_internal*)
- ALLOC(sizeof(linkedlist_datablock_internal));
- if (ldi!=NULL)
- {
- ldi->next_datablock = NULL ;
- ldi->filled_in_this_block = 0 ;
- ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
- }
- return ldi;
-}
-
-local void free_datablock(ldi)
- linkedlist_datablock_internal* ldi;
-{
- while (ldi!=NULL)
- {
- linkedlist_datablock_internal* ldinext = ldi->next_datablock;
- TRYFREE(ldi);
- ldi = ldinext;
- }
-}
-
-local void init_linkedlist(ll)
- linkedlist_data* ll;
-{
- ll->first_block = ll->last_block = NULL;
-}
-
-local void free_linkedlist(ll)
- linkedlist_data* ll;
-{
- free_datablock(ll->first_block);
- ll->first_block = ll->last_block = NULL;
-}
-
-
-local int add_data_in_datablock(ll,buf,len)
- linkedlist_data* ll;
- const void* buf;
- uLong len;
-{
- linkedlist_datablock_internal* ldi;
- const unsigned char* from_copy;
-
- if (ll==NULL)
- return ZIP_INTERNALERROR;
-
- if (ll->last_block == NULL)
- {
- ll->first_block = ll->last_block = allocate_new_datablock();
- if (ll->first_block == NULL)
- return ZIP_INTERNALERROR;
- }
-
- ldi = ll->last_block;
- from_copy = (unsigned char*)buf;
-
- while (len>0)
- {
- uInt copy_this;
- uInt i;
- unsigned char* to_copy;
-
- if (ldi->avail_in_this_block==0)
- {
- ldi->next_datablock = allocate_new_datablock();
- if (ldi->next_datablock == NULL)
- return ZIP_INTERNALERROR;
- ldi = ldi->next_datablock ;
- ll->last_block = ldi;
- }
-
- if (ldi->avail_in_this_block < len)
- copy_this = (uInt)ldi->avail_in_this_block;
- else
- copy_this = (uInt)len;
-
- to_copy = &(ldi->data[ldi->filled_in_this_block]);
-
- for (i=0;i<copy_this;i++)
- *(to_copy+i)=*(from_copy+i);
-
- ldi->filled_in_this_block += copy_this;
- ldi->avail_in_this_block -= copy_this;
- from_copy += copy_this ;
- len -= copy_this;
- }
- return ZIP_OK;
-}
-
-
-
-/****************************************************************************/
-
-#ifndef NO_ADDFILEINEXISTINGZIP
-/* ===========================================================================
- Inputs a long in LSB order to the given file
- nbByte == 1, 2 or 4 (byte, short or long)
-*/
-
-local int ziplocal_putValue OF((const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream, uLong x, int nbByte));
-local int ziplocal_putValue (pzlib_filefunc_def, filestream, x, nbByte)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong x;
- int nbByte;
-{
- unsigned char buf[4];
- int n;
- for (n = 0; n < nbByte; n++)
- {
- buf[n] = (unsigned char)(x & 0xff);
- x >>= 8;
- }
- if (x != 0)
- { /* data overflow - hack for ZIP64 (X Roche) */
- for (n = 0; n < nbByte; n++)
- {
- buf[n] = 0xff;
- }
- }
-
- if (ZWRITE(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte)
- return ZIP_ERRNO;
- else
- return ZIP_OK;
-}
-
-local void ziplocal_putValue_inmemory OF((void* dest, uLong x, int nbByte));
-local void ziplocal_putValue_inmemory (dest, x, nbByte)
- void* dest;
- uLong x;
- int nbByte;
-{
- unsigned char* buf=(unsigned char*)dest;
- int n;
- for (n = 0; n < nbByte; n++) {
- buf[n] = (unsigned char)(x & 0xff);
- x >>= 8;
- }
-
- if (x != 0)
- { /* data overflow - hack for ZIP64 */
- for (n = 0; n < nbByte; n++)
- {
- buf[n] = 0xff;
- }
- }
-}
-
-/****************************************************************************/
-
-
-local uLong ziplocal_TmzDateToDosDate(ptm,dosDate)
- const tm_zip* ptm;
- uLong dosDate;
-{
- uLong year = (uLong)ptm->tm_year;
- if (year>1980)
- year-=1980;
- else if (year>80)
- year-=80;
- return
- (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) |
- ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
-}
-
-
-/****************************************************************************/
-
-local int ziplocal_getByte OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- int *pi));
-
-local int ziplocal_getByte(pzlib_filefunc_def,filestream,pi)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- int *pi;
-{
- unsigned char c;
- int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
- if (err==1)
- {
- *pi = (int)c;
- return ZIP_OK;
- }
- else
- {
- if (ZERROR(*pzlib_filefunc_def,filestream))
- return ZIP_ERRNO;
- else
- return ZIP_EOF;
- }
-}
-
-
-/* ===========================================================================
- Reads a long in LSB order from the given gz_stream. Sets
-*/
-local int ziplocal_getShort OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int ziplocal_getShort (pzlib_filefunc_def,filestream,pX)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong *pX;
-{
- uLong x ;
- int i;
- int err;
-
- err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==ZIP_OK)
- err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<8;
-
- if (err==ZIP_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-local int ziplocal_getLong OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int ziplocal_getLong (pzlib_filefunc_def,filestream,pX)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong *pX;
-{
- uLong x ;
- int i;
- int err;
-
- err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==ZIP_OK)
- err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<8;
-
- if (err==ZIP_OK)
- err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<16;
-
- if (err==ZIP_OK)
- err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<24;
-
- if (err==ZIP_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-#ifndef BUFREADCOMMENT
-#define BUFREADCOMMENT (0x400)
-#endif
-/*
- Locate the Central directory of a zipfile (at the end, just before
- the global comment)
-*/
-local uLong ziplocal_SearchCentralDir OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream));
-
-local uLong ziplocal_SearchCentralDir(pzlib_filefunc_def,filestream)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
-{
- unsigned char* buf;
- uLong uSizeFile;
- uLong uBackRead;
- uLong uMaxBack=0xffff; /* maximum size of global comment */
- uLong uPosFound=0;
-
- if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
- return 0;
-
-
- uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
-
- if (uMaxBack>uSizeFile)
- uMaxBack = uSizeFile;
-
- buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
- if (buf==NULL)
- return 0;
-
- uBackRead = 4;
- while (uBackRead<uMaxBack)
- {
- uLong uReadSize,uReadPos ;
- int i;
- if (uBackRead+BUFREADCOMMENT>uMaxBack)
- uBackRead = uMaxBack;
- else
- uBackRead+=BUFREADCOMMENT;
- uReadPos = uSizeFile-uBackRead ;
-
- uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
- (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
- if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- break;
-
- if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
- break;
-
- for (i=(int)uReadSize-3; (i--)>0;)
- if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
- ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
- {
- uPosFound = uReadPos+i;
- break;
- }
-
- if (uPosFound!=0)
- break;
- }
- TRYFREE(buf);
- return uPosFound;
-}
-#endif /* !NO_ADDFILEINEXISTINGZIP*/
-
-/************************************************************/
-extern zipFile ZEXPORT zipOpen2 (pathname, append, globalcomment, pzlib_filefunc_def)
- const char *pathname;
- int append;
- zipcharpc* globalcomment;
- zlib_filefunc_def* pzlib_filefunc_def;
-{
- zip_internal ziinit;
- zip_internal* zi;
- int err=ZIP_OK;
-
-
- if (pzlib_filefunc_def==NULL)
- fill_fopen_filefunc(&ziinit.z_filefunc);
- else
- ziinit.z_filefunc = *pzlib_filefunc_def;
-
- ziinit.filestream = (*(ziinit.z_filefunc.zopen_file))
- (ziinit.z_filefunc.opaque,
- pathname,
- (append == APPEND_STATUS_CREATE) ?
- (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
- (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
-
- if (ziinit.filestream == NULL)
- return NULL;
- ziinit.begin_pos = ZTELL(ziinit.z_filefunc,ziinit.filestream);
- ziinit.in_opened_file_inzip = 0;
- ziinit.ci.stream_initialised = 0;
- ziinit.number_entry = 0;
- ziinit.add_position_when_writting_offset = 0;
- init_linkedlist(&(ziinit.central_dir));
-
-
- zi = (zip_internal*)ALLOC(sizeof(zip_internal));
- if (zi==NULL)
- {
- ZCLOSE(ziinit.z_filefunc,ziinit.filestream);
- return NULL;
- }
-
- /* now we add file in a zipfile */
-# ifndef NO_ADDFILEINEXISTINGZIP
- ziinit.globalcomment = NULL;
- if (append == APPEND_STATUS_ADDINZIP)
- {
- uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
-
- uLong size_central_dir; /* size of the central directory */
- uLong offset_central_dir; /* offset of start of central directory */
- uLong central_pos,uL;
-
- uLong number_disk; /* number of the current dist, used for
- spaning ZIP, unsupported, always 0*/
- uLong number_disk_with_CD; /* number the the disk with central dir, used
- for spaning ZIP, unsupported, always 0*/
- uLong number_entry;
- uLong number_entry_CD; /* total number of entries in
- the central dir
- (same than number_entry on nospan) */
- uLong size_comment;
-
- central_pos = ziplocal_SearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
- if (central_pos==0)
- err=ZIP_ERRNO;
-
- if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
- central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=ZIP_ERRNO;
-
- /* the signature, already checked */
- if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&uL)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- /* number of this disk */
- if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- /* number of the disk with the start of the central directory */
- if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk_with_CD)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- /* total number of entries in the central dir on this disk */
- if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- /* total number of entries in the central dir */
- if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry_CD)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- if ((number_entry_CD!=number_entry) ||
- (number_disk_with_CD!=0) ||
- (number_disk!=0))
- err=ZIP_BADZIPFILE;
-
- /* size of the central directory */
- if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&size_central_dir)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- /* offset of start of central directory with respect to the
- starting disk number */
- if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&offset_central_dir)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- /* zipfile global comment length */
- if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&size_comment)!=ZIP_OK)
- err=ZIP_ERRNO;
-
- if ((central_pos<offset_central_dir+size_central_dir) &&
- (err==ZIP_OK))
- err=ZIP_BADZIPFILE;
-
- if (err!=ZIP_OK)
- {
- ZCLOSE(ziinit.z_filefunc, ziinit.filestream);
- return NULL;
- }
-
- if (size_comment>0)
- {
- ziinit.globalcomment = ALLOC(size_comment+1);
- if (ziinit.globalcomment)
- {
- size_comment = ZREAD(ziinit.z_filefunc, ziinit.filestream,ziinit.globalcomment,size_comment);
- ziinit.globalcomment[size_comment]=0;
- }
- }
-
- byte_before_the_zipfile = central_pos -
- (offset_central_dir+size_central_dir);
- ziinit.add_position_when_writting_offset = byte_before_the_zipfile;
-
- {
- uLong size_central_dir_to_read = size_central_dir;
- size_t buf_size = SIZEDATA_INDATABLOCK;
- void* buf_read = (void*)ALLOC(buf_size);
- if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
- offset_central_dir + byte_before_the_zipfile,
- ZLIB_FILEFUNC_SEEK_SET) != 0)
- err=ZIP_ERRNO;
-
- while ((size_central_dir_to_read>0) && (err==ZIP_OK))
- {
- uLong read_this = SIZEDATA_INDATABLOCK;
- if (read_this > size_central_dir_to_read)
- read_this = size_central_dir_to_read;
- if (ZREAD(ziinit.z_filefunc, ziinit.filestream,buf_read,read_this) != read_this)
- err=ZIP_ERRNO;
-
- if (err==ZIP_OK)
- err = add_data_in_datablock(&ziinit.central_dir,buf_read,
- (uLong)read_this);
- size_central_dir_to_read-=read_this;
- }
- TRYFREE(buf_read);
- }
- ziinit.begin_pos = byte_before_the_zipfile;
- ziinit.number_entry = number_entry_CD;
-
- if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
- offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=ZIP_ERRNO;
- }
-
- if (globalcomment)
- {
- *globalcomment = ziinit.globalcomment;
- }
-# endif /* !NO_ADDFILEINEXISTINGZIP*/
-
- if (err != ZIP_OK)
- {
-# ifndef NO_ADDFILEINEXISTINGZIP
- TRYFREE(ziinit.globalcomment);
-# endif /* !NO_ADDFILEINEXISTINGZIP*/
- TRYFREE(zi);
- return NULL;
- }
- else
- {
- *zi = ziinit;
- return (zipFile)zi;
- }
-}
-
-extern zipFile ZEXPORT zipOpen (pathname, append)
- const char *pathname;
- int append;
-{
- return zipOpen2(pathname,append,NULL,NULL);
-}
-
-extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,
- extrafield_local, size_extrafield_local,
- extrafield_global, size_extrafield_global,
- comment, method, level, raw,
- windowBits, memLevel, strategy,
- password, crcForCrypting)
- zipFile file;
- const char* filename;
- const zip_fileinfo* zipfi;
- const void* extrafield_local;
- uInt size_extrafield_local;
- const void* extrafield_global;
- uInt size_extrafield_global;
- const char* comment;
- int method;
- int level;
- int raw;
- int windowBits;
- int memLevel;
- int strategy;
- const char* password;
- uLong crcForCrypting;
-{
- zip_internal* zi;
- uInt size_filename;
- uInt size_comment;
- uInt i;
- int err = ZIP_OK;
-
-# ifdef NOCRYPT
- if (password != NULL)
- return ZIP_PARAMERROR;
-# endif
-
- if (file == NULL)
- return ZIP_PARAMERROR;
- if ((method!=0) && (method!=Z_DEFLATED))
- return ZIP_PARAMERROR;
-
- zi = (zip_internal*)file;
-
- if (zi->in_opened_file_inzip == 1)
- {
- err = zipCloseFileInZip (file);
- if (err != ZIP_OK)
- return err;
- }
-
-
- if (filename==NULL)
- filename="-";
-
- if (comment==NULL)
- size_comment = 0;
- else
- size_comment = (uInt)strlen(comment);
-
- size_filename = (uInt)strlen(filename);
-
- if (zipfi == NULL)
- zi->ci.dosDate = 0;
- else
- {
- if (zipfi->dosDate != 0)
- zi->ci.dosDate = zipfi->dosDate;
- else zi->ci.dosDate = ziplocal_TmzDateToDosDate(&zipfi->tmz_date,zipfi->dosDate);
- }
-
- zi->ci.flag = 0;
- if ((level==8) || (level==9))
- zi->ci.flag |= 2;
- if ((level==2))
- zi->ci.flag |= 4;
- if ((level==1))
- zi->ci.flag |= 6;
- if (password != NULL)
- zi->ci.flag |= 1;
-
- zi->ci.crc32 = 0;
- zi->ci.method = method;
- zi->ci.encrypt = 0;
- zi->ci.stream_initialised = 0;
- zi->ci.pos_in_buffered_data = 0;
- zi->ci.raw = raw;
- zi->ci.pos_local_header = ZTELL(zi->z_filefunc,zi->filestream) ;
- zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename +
- size_extrafield_global + size_comment;
- zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader);
-
- ziplocal_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
- /* version info */
- ziplocal_putValue_inmemory(zi->ci.central_header+4,(uLong)VERSIONMADEBY,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
- ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
- ziplocal_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
- ziplocal_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
- ziplocal_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
-
- if (zipfi==NULL)
- ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
- else
- ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
-
- if (zipfi==NULL)
- ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
- else
- ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
-
- ziplocal_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header- zi->add_position_when_writting_offset,4);
-
- for (i=0;i<size_filename;i++)
- *(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);
-
- for (i=0;i<size_extrafield_global;i++)
- *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
- *(((const char*)extrafield_global)+i);
-
- for (i=0;i<size_comment;i++)
- *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
- size_extrafield_global+i) = *(comment+i);
- if (zi->ci.central_header == NULL)
- return ZIP_INTERNALERROR;
-
- /* write the local header */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC,4);
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield_local,2);
-
- if ((err==ZIP_OK) && (size_filename>0))
- if (ZWRITE(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
- err = ZIP_ERRNO;
-
- if ((err==ZIP_OK) && (size_extrafield_local>0))
- if (ZWRITE(zi->z_filefunc,zi->filestream,extrafield_local,size_extrafield_local)
- !=size_extrafield_local)
- err = ZIP_ERRNO;
-
- zi->ci.stream.avail_in = (uInt)0;
- zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
- zi->ci.stream.next_out = zi->ci.buffered_data;
- zi->ci.stream.total_in = 0;
- zi->ci.stream.total_out = 0;
-
- if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
- {
- zi->ci.stream.zalloc = (alloc_func)0;
- zi->ci.stream.zfree = (free_func)0;
- zi->ci.stream.opaque = (voidpf)0;
-
- if (windowBits>0)
- windowBits = -windowBits;
-
- err = deflateInit2(&zi->ci.stream, level,
- Z_DEFLATED, windowBits, memLevel, strategy);
-
- if (err==Z_OK)
- zi->ci.stream_initialised = 1;
- }
-# ifndef NOCRYPT
- zi->ci.crypt_header_size = 0;
- if ((err==Z_OK) && (password != NULL))
- {
- unsigned char bufHead[RAND_HEAD_LEN];
- unsigned int sizeHead;
- zi->ci.encrypt = 1;
- zi->ci.pcrc_32_tab = get_crc_table();
- /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
-
- sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
- zi->ci.crypt_header_size = sizeHead;
-
- if (ZWRITE(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
- err = ZIP_ERRNO;
- }
-# endif
-
- if (err==Z_OK)
- zi->in_opened_file_inzip = 1;
- return err;
-}
-
-extern int ZEXPORT zipOpenNewFileInZip2(file, filename, zipfi,
- extrafield_local, size_extrafield_local,
- extrafield_global, size_extrafield_global,
- comment, method, level, raw)
- zipFile file;
- const char* filename;
- const zip_fileinfo* zipfi;
- const void* extrafield_local;
- uInt size_extrafield_local;
- const void* extrafield_global;
- uInt size_extrafield_global;
- const char* comment;
- int method;
- int level;
- int raw;
-{
- return zipOpenNewFileInZip3 (file, filename, zipfi,
- extrafield_local, size_extrafield_local,
- extrafield_global, size_extrafield_global,
- comment, method, level, raw,
- -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
- NULL, 0);
-}
-
-extern int ZEXPORT zipOpenNewFileInZip (file, filename, zipfi,
- extrafield_local, size_extrafield_local,
- extrafield_global, size_extrafield_global,
- comment, method, level)
- zipFile file;
- const char* filename;
- const zip_fileinfo* zipfi;
- const void* extrafield_local;
- uInt size_extrafield_local;
- const void* extrafield_global;
- uInt size_extrafield_global;
- const char* comment;
- int method;
- int level;
-{
- return zipOpenNewFileInZip2 (file, filename, zipfi,
- extrafield_local, size_extrafield_local,
- extrafield_global, size_extrafield_global,
- comment, method, level, 0);
-}
-
-local int zipFlushWriteBuffer(zi)
- zip_internal* zi;
-{
- int err=ZIP_OK;
-
- if (zi->ci.encrypt != 0)
- {
-#ifndef NOCRYPT
- uInt i;
- int t;
- for (i=0;i<zi->ci.pos_in_buffered_data;i++)
- zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab,
- zi->ci.buffered_data[i],t);
-#endif
- }
- if (ZWRITE(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data)
- !=zi->ci.pos_in_buffered_data)
- err = ZIP_ERRNO;
- zi->ci.pos_in_buffered_data = 0;
- return err;
-}
-
-extern int ZEXPORT zipWriteInFileInZip (file, buf, len)
- zipFile file;
- const void* buf;
- unsigned len;
-{
- zip_internal* zi;
- int err=ZIP_OK;
-
- if (file == NULL)
- return ZIP_PARAMERROR;
- zi = (zip_internal*)file;
-
- if (zi->in_opened_file_inzip == 0)
- return ZIP_PARAMERROR;
-
- zi->ci.stream.next_in = (void*)buf;
- zi->ci.stream.avail_in = len;
- zi->ci.crc32 = crc32(zi->ci.crc32,buf,len);
-
- while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
- {
- if (zi->ci.stream.avail_out == 0)
- {
- if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
- err = ZIP_ERRNO;
- zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
- zi->ci.stream.next_out = zi->ci.buffered_data;
- }
-
-
- if(err != ZIP_OK)
- break;
-
- if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
- {
- uLong uTotalOutBefore = zi->ci.stream.total_out;
- err=deflate(&zi->ci.stream, Z_NO_FLUSH);
- zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
-
- }
- else
- {
- uInt copy_this,i;
- if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
- copy_this = zi->ci.stream.avail_in;
- else
- copy_this = zi->ci.stream.avail_out;
- for (i=0;i<copy_this;i++)
- *(((char*)zi->ci.stream.next_out)+i) =
- *(((const char*)zi->ci.stream.next_in)+i);
- {
- zi->ci.stream.avail_in -= copy_this;
- zi->ci.stream.avail_out-= copy_this;
- zi->ci.stream.next_in+= copy_this;
- zi->ci.stream.next_out+= copy_this;
- zi->ci.stream.total_in+= copy_this;
- zi->ci.stream.total_out+= copy_this;
- zi->ci.pos_in_buffered_data += copy_this;
- }
- }
- }
-
- return err;
-}
-
-extern int ZEXPORT zipCloseFileInZipRaw (file, uncompressed_size, crc32)
- zipFile file;
- uLong uncompressed_size;
- uLong crc32;
-{
- zip_internal* zi;
- uLong compressed_size;
- int err=ZIP_OK;
-
- if (file == NULL)
- return ZIP_PARAMERROR;
- zi = (zip_internal*)file;
-
- if (zi->in_opened_file_inzip == 0)
- return ZIP_PARAMERROR;
- zi->ci.stream.avail_in = 0;
-
- if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
- while (err==ZIP_OK)
- {
- uLong uTotalOutBefore;
- if (zi->ci.stream.avail_out == 0)
- {
- if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
- err = ZIP_ERRNO;
- zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
- zi->ci.stream.next_out = zi->ci.buffered_data;
- }
- uTotalOutBefore = zi->ci.stream.total_out;
- err=deflate(&zi->ci.stream, Z_FINISH);
- zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
- }
-
- if (err==Z_STREAM_END)
- err=ZIP_OK; /* this is normal */
-
- if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
- if (zipFlushWriteBuffer(zi)==ZIP_ERRNO)
- err = ZIP_ERRNO;
-
- if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
- {
- err=deflateEnd(&zi->ci.stream);
- zi->ci.stream_initialised = 0;
- }
-
- if (!zi->ci.raw)
- {
- crc32 = (uLong)zi->ci.crc32;
- uncompressed_size = (uLong)zi->ci.stream.total_in;
- }
- compressed_size = (uLong)zi->ci.stream.total_out;
-# ifndef NOCRYPT
- compressed_size += zi->ci.crypt_header_size;
-# endif
-
- ziplocal_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
- ziplocal_putValue_inmemory(zi->ci.central_header+20,
- compressed_size,4); /*compr size*/
- if (zi->ci.stream.data_type == Z_ASCII)
- ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
- ziplocal_putValue_inmemory(zi->ci.central_header+24,
- uncompressed_size,4); /*uncompr size*/
-
- if (err==ZIP_OK)
- err = add_data_in_datablock(&zi->central_dir,zi->ci.central_header,
- (uLong)zi->ci.size_centralheader);
- free(zi->ci.central_header);
-
- if (err==ZIP_OK)
- {
- long cur_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
- if (ZSEEK(zi->z_filefunc,zi->filestream,
- zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err = ZIP_ERRNO;
-
- if (err==ZIP_OK)
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
-
- if (err==ZIP_OK) /* compressed size, unknown */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
-
- if (err==ZIP_OK) /* uncompressed size, unknown */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
-
- if (ZSEEK(zi->z_filefunc,zi->filestream,
- cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err = ZIP_ERRNO;
- }
-
- zi->number_entry ++;
- zi->in_opened_file_inzip = 0;
-
- return err;
-}
-
-extern int ZEXPORT zipCloseFileInZip (file)
- zipFile file;
-{
- return zipCloseFileInZipRaw (file,0,0);
-}
-
-extern int ZEXPORT zipClose (file, global_comment)
- zipFile file;
- const char* global_comment;
-{
- zip_internal* zi;
- int err = 0;
- uLong size_centraldir = 0;
- uLong centraldir_pos_inzip;
- uInt size_global_comment;
- if (file == NULL)
- return ZIP_PARAMERROR;
- zi = (zip_internal*)file;
-
- if (zi->in_opened_file_inzip == 1)
- {
- err = zipCloseFileInZip (file);
- }
-
-#ifndef NO_ADDFILEINEXISTINGZIP
- if (global_comment==NULL)
- global_comment = zi->globalcomment;
-#endif
- if (global_comment==NULL)
- size_global_comment = 0;
- else
- size_global_comment = (uInt)strlen(global_comment);
-
- centraldir_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
- if (err==ZIP_OK)
- {
- linkedlist_datablock_internal* ldi = zi->central_dir.first_block ;
- while (ldi!=NULL)
- {
- if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
- if (ZWRITE(zi->z_filefunc,zi->filestream,
- ldi->data,ldi->filled_in_this_block)
- !=ldi->filled_in_this_block )
- err = ZIP_ERRNO;
-
- size_centraldir += ldi->filled_in_this_block;
- ldi = ldi->next_datablock;
- }
- }
- free_datablock(zi->central_dir.first_block);
-
- if (err==ZIP_OK) /* Magic End */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
-
- if (err==ZIP_OK) /* number of this disk */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
-
- if (err==ZIP_OK) /* number of the disk with the start of the central directory */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
-
- if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
-
- if (err==ZIP_OK) /* total number of entries in the central dir */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
-
- if (err==ZIP_OK) /* size of the central directory */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);
-
- if (err==ZIP_OK) /* offset of start of central directory with respect to the
- starting disk number */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,
- (uLong)(centraldir_pos_inzip - zi->add_position_when_writting_offset),4);
-
- if (err==ZIP_OK) /* zipfile comment length */
- err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
-
- if ((err==ZIP_OK) && (size_global_comment>0))
- if (ZWRITE(zi->z_filefunc,zi->filestream,
- global_comment,size_global_comment) != size_global_comment)
- err = ZIP_ERRNO;
-
- if (ZCLOSE(zi->z_filefunc,zi->filestream) != 0)
- if (err == ZIP_OK)
- err = ZIP_ERRNO;
-
-#ifndef NO_ADDFILEINEXISTINGZIP
- TRYFREE(zi->globalcomment);
-#endif
- TRYFREE(zi);
-
- return err;
-}
+++ /dev/null
-/* zip.h -- IO for compress .zip files using zlib
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-
- This unzip package allow creates .ZIP file, compatible with PKZip 2.04g
- WinZip, InfoZip tools and compatible.
- Multi volume ZipFile (span) are not supported.
- Encryption compatible with pkzip 2.04g only supported
- Old compressions used by old PKZip 1.x are not supported
-
- For uncompress .zip file, look at unzip.h
-
-
- I WAIT FEEDBACK at mail info@winimage.com
- Visit also http://www.winimage.com/zLibDll/unzip.html for evolution
-
- Condition of use and distribution are the same than zlib :
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
-
-*/
-
-/* for more info about .ZIP format, see
- http://www.info-zip.org/pub/infozip/doc/appnote-981119-iz.zip
- http://www.info-zip.org/pub/infozip/doc/
- PkWare has also a specification at :
- ftp://ftp.pkware.com/probdesc.zip
-*/
-
-#ifndef _zip_H
-#define _zip_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef _ZLIB_H
-#include "zlib.h"
-#endif
-
-#ifndef _ZLIBIOAPI_H
-#include "ioapi.h"
-#endif
-
-#if defined(STRICTZIP) || defined(STRICTZIPUNZIP)
-/* like the STRICT of WIN32, we define a pointer that cannot be converted
- from (void*) without cast */
-typedef struct TagzipFile__ { int unused; } zipFile__;
-typedef zipFile__ *zipFile;
-#else
-typedef voidp zipFile;
-#endif
-
-#define ZIP_OK (0)
-#define ZIP_EOF (0)
-#define ZIP_ERRNO (Z_ERRNO)
-#define ZIP_PARAMERROR (-102)
-#define ZIP_BADZIPFILE (-103)
-#define ZIP_INTERNALERROR (-104)
-
-#ifndef DEF_MEM_LEVEL
-# if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-# else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-# endif
-#endif
-/* default memLevel */
-
-/* tm_zip contain date/time info */
-typedef struct tm_zip_s
-{
- uInt tm_sec; /* seconds after the minute - [0,59] */
- uInt tm_min; /* minutes after the hour - [0,59] */
- uInt tm_hour; /* hours since midnight - [0,23] */
- uInt tm_mday; /* day of the month - [1,31] */
- uInt tm_mon; /* months since January - [0,11] */
- uInt tm_year; /* years - [1980..2044] */
-} tm_zip;
-
-typedef struct
-{
- tm_zip tmz_date; /* date in understandable format */
- uLong dosDate; /* if dos_date == 0, tmu_date is used */
-/* uLong flag; */ /* general purpose bit flag 2 bytes */
-
- uLong internal_fa; /* internal file attributes 2 bytes */
- uLong external_fa; /* external file attributes 4 bytes */
-} zip_fileinfo;
-
-typedef const char* zipcharpc;
-
-
-#define APPEND_STATUS_CREATE (0)
-#define APPEND_STATUS_CREATEAFTER (1)
-#define APPEND_STATUS_ADDINZIP (2)
-
-extern zipFile ZEXPORT zipOpen OF((const char *pathname, int append));
-/*
- Create a zipfile.
- pathname contain on Windows XP a filename like "c:\\zlib\\zlib113.zip" or on
- an Unix computer "zlib/zlib113.zip".
- if the file pathname exist and append==APPEND_STATUS_CREATEAFTER, the zip
- will be created at the end of the file.
- (useful if the file contain a self extractor code)
- if the file pathname exist and append==APPEND_STATUS_ADDINZIP, we will
- add files in existing zip (be sure you don't add file that doesn't exist)
- If the zipfile cannot be opened, the return value is NULL.
- Else, the return value is a zipFile Handle, usable with other function
- of this zip package.
-*/
-
-/* Note : there is no delete function into a zipfile.
- If you want delete file into a zipfile, you must open a zipfile, and create another
- Of couse, you can use RAW reading and writing to copy the file you did not want delte
-*/
-
-extern zipFile ZEXPORT zipOpen2 OF((const char *pathname,
- int append,
- zipcharpc* globalcomment,
- zlib_filefunc_def* pzlib_filefunc_def));
-
-extern int ZEXPORT zipOpenNewFileInZip OF((zipFile file,
- const char* filename,
- const zip_fileinfo* zipfi,
- const void* extrafield_local,
- uInt size_extrafield_local,
- const void* extrafield_global,
- uInt size_extrafield_global,
- const char* comment,
- int method,
- int level));
-/*
- Open a file in the ZIP for writing.
- filename : the filename in zip (if NULL, '-' without quote will be used
- *zipfi contain supplemental information
- if extrafield_local!=NULL and size_extrafield_local>0, extrafield_local
- contains the extrafield data the the local header
- if extrafield_global!=NULL and size_extrafield_global>0, extrafield_global
- contains the extrafield data the the local header
- if comment != NULL, comment contain the comment string
- method contain the compression method (0 for store, Z_DEFLATED for deflate)
- level contain the level of compression (can be Z_DEFAULT_COMPRESSION)
-*/
-
-
-extern int ZEXPORT zipOpenNewFileInZip2 OF((zipFile file,
- const char* filename,
- const zip_fileinfo* zipfi,
- const void* extrafield_local,
- uInt size_extrafield_local,
- const void* extrafield_global,
- uInt size_extrafield_global,
- const char* comment,
- int method,
- int level,
- int raw));
-
-/*
- Same than zipOpenNewFileInZip, except if raw=1, we write raw file
- */
-
-extern int ZEXPORT zipOpenNewFileInZip3 OF((zipFile file,
- const char* filename,
- const zip_fileinfo* zipfi,
- const void* extrafield_local,
- uInt size_extrafield_local,
- const void* extrafield_global,
- uInt size_extrafield_global,
- const char* comment,
- int method,
- int level,
- int raw,
- int windowBits,
- int memLevel,
- int strategy,
- const char* password,
- uLong crcForCtypting));
-
-/*
- Same than zipOpenNewFileInZip2, except
- windowBits,memLevel,,strategy : see parameter strategy in deflateInit2
- password : crypting password (NULL for no crypting)
- crcForCtypting : crc of file to compress (needed for crypting)
- */
-
-
-extern int ZEXPORT zipWriteInFileInZip OF((zipFile file,
- const void* buf,
- unsigned len));
-/*
- Write data in the zipfile
-*/
-
-extern int ZEXPORT zipCloseFileInZip OF((zipFile file));
-/*
- Close the current file in the zipfile
-*/
-
-extern int ZEXPORT zipCloseFileInZipRaw OF((zipFile file,
- uLong uncompressed_size,
- uLong crc32));
-/*
- Close the current file in the zipfile, for fiel opened with
- parameter raw=1 in zipOpenNewFileInZip2
- uncompressed_size and crc32 are value for the uncompressed size
-*/
-
-extern int ZEXPORT zipClose OF((zipFile file,
- const char* global_comment));
-/*
- Close the zipfile
-*/
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _zip_H */
+++ /dev/null
-(* example.c -- usage example of the zlib compression library
- * Copyright (C) 1995-2003 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Pascal translation
- * Copyright (C) 1998 by Jacques Nomssi Nzali.
- * For conditions of distribution and use, see copyright notice in readme.txt
- *
- * Adaptation to the zlibpas interface
- * Copyright (C) 2003 by Cosmin Truta.
- * For conditions of distribution and use, see copyright notice in readme.txt
- *)
-
-program example;
-
-{$DEFINE TEST_COMPRESS}
-{DO NOT $DEFINE TEST_GZIO}
-{$DEFINE TEST_DEFLATE}
-{$DEFINE TEST_INFLATE}
-{$DEFINE TEST_FLUSH}
-{$DEFINE TEST_SYNC}
-{$DEFINE TEST_DICT}
-
-uses SysUtils, zlibpas;
-
-const TESTFILE = 'foo.gz';
-
-(* "hello world" would be more standard, but the repeated "hello"
- * stresses the compression code better, sorry...
- *)
-const hello: PChar = 'hello, hello!';
-
-const dictionary: PChar = 'hello';
-
-var dictId: LongInt; (* Adler32 value of the dictionary *)
-
-procedure CHECK_ERR(err: Integer; msg: String);
-begin
- if err <> Z_OK then
- begin
- WriteLn(msg, ' error: ', err);
- Halt(1);
- end;
-end;
-
-procedure EXIT_ERR(const msg: String);
-begin
- WriteLn('Error: ', msg);
- Halt(1);
-end;
-
-(* ===========================================================================
- * Test compress and uncompress
- *)
-{$IFDEF TEST_COMPRESS}
-procedure test_compress(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var err: Integer;
- len: LongInt;
-begin
- len := StrLen(hello)+1;
-
- err := compress(compr, comprLen, hello, len);
- CHECK_ERR(err, 'compress');
-
- StrCopy(PChar(uncompr), 'garbage');
-
- err := uncompress(uncompr, uncomprLen, compr, comprLen);
- CHECK_ERR(err, 'uncompress');
-
- if StrComp(PChar(uncompr), hello) <> 0 then
- EXIT_ERR('bad uncompress')
- else
- WriteLn('uncompress(): ', PChar(uncompr));
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test read/write of .gz files
- *)
-{$IFDEF TEST_GZIO}
-procedure test_gzio(const fname: PChar; (* compressed file name *)
- uncompr: Pointer;
- uncomprLen: LongInt);
-var err: Integer;
- len: Integer;
- zfile: gzFile;
- pos: LongInt;
-begin
- len := StrLen(hello)+1;
-
- zfile := gzopen(fname, 'wb');
- if zfile = NIL then
- begin
- WriteLn('gzopen error');
- Halt(1);
- end;
- gzputc(zfile, 'h');
- if gzputs(zfile, 'ello') <> 4 then
- begin
- WriteLn('gzputs err: ', gzerror(zfile, err));
- Halt(1);
- end;
- {$IFDEF GZ_FORMAT_STRING}
- if gzprintf(zfile, ', %s!', 'hello') <> 8 then
- begin
- WriteLn('gzprintf err: ', gzerror(zfile, err));
- Halt(1);
- end;
- {$ELSE}
- if gzputs(zfile, ', hello!') <> 8 then
- begin
- WriteLn('gzputs err: ', gzerror(zfile, err));
- Halt(1);
- end;
- {$ENDIF}
- gzseek(zfile, 1, SEEK_CUR); (* add one zero byte *)
- gzclose(zfile);
-
- zfile := gzopen(fname, 'rb');
- if zfile = NIL then
- begin
- WriteLn('gzopen error');
- Halt(1);
- end;
-
- StrCopy(PChar(uncompr), 'garbage');
-
- if gzread(zfile, uncompr, uncomprLen) <> len then
- begin
- WriteLn('gzread err: ', gzerror(zfile, err));
- Halt(1);
- end;
- if StrComp(PChar(uncompr), hello) <> 0 then
- begin
- WriteLn('bad gzread: ', PChar(uncompr));
- Halt(1);
- end
- else
- WriteLn('gzread(): ', PChar(uncompr));
-
- pos := gzseek(zfile, -8, SEEK_CUR);
- if (pos <> 6) or (gztell(zfile) <> pos) then
- begin
- WriteLn('gzseek error, pos=', pos, ', gztell=', gztell(zfile));
- Halt(1);
- end;
-
- if gzgetc(zfile) <> ' ' then
- begin
- WriteLn('gzgetc error');
- Halt(1);
- end;
-
- if gzungetc(' ', zfile) <> ' ' then
- begin
- WriteLn('gzungetc error');
- Halt(1);
- end;
-
- gzgets(zfile, PChar(uncompr), uncomprLen);
- uncomprLen := StrLen(PChar(uncompr));
- if uncomprLen <> 7 then (* " hello!" *)
- begin
- WriteLn('gzgets err after gzseek: ', gzerror(zfile, err));
- Halt(1);
- end;
- if StrComp(PChar(uncompr), hello + 6) <> 0 then
- begin
- WriteLn('bad gzgets after gzseek');
- Halt(1);
- end
- else
- WriteLn('gzgets() after gzseek: ', PChar(uncompr));
-
- gzclose(zfile);
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with small buffers
- *)
-{$IFDEF TEST_DEFLATE}
-procedure test_deflate(compr: Pointer; comprLen: LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
- len: LongInt;
-begin
- len := StrLen(hello)+1;
-
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
- CHECK_ERR(err, 'deflateInit');
-
- c_stream.next_in := hello;
- c_stream.next_out := compr;
-
- while (c_stream.total_in <> len) and
- (c_stream.total_out < comprLen) do
- begin
- c_stream.avail_out := 1; { force small buffers }
- c_stream.avail_in := 1;
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
- end;
-
- (* Finish the stream, still forcing small buffers: *)
- while TRUE do
- begin
- c_stream.avail_out := 1;
- err := deflate(c_stream, Z_FINISH);
- if err = Z_STREAM_END then
- break;
- CHECK_ERR(err, 'deflate');
- end;
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflate with small buffers
- *)
-{$IFDEF TEST_INFLATE}
-procedure test_inflate(compr: Pointer; comprLen : LongInt;
- uncompr: Pointer; uncomprLen : LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- d_stream.next_in := compr;
- d_stream.avail_in := 0;
- d_stream.next_out := uncompr;
-
- err := inflateInit(d_stream);
- CHECK_ERR(err, 'inflateInit');
-
- while (d_stream.total_out < uncomprLen) and
- (d_stream.total_in < comprLen) do
- begin
- d_stream.avail_out := 1; (* force small buffers *)
- d_stream.avail_in := 1;
- err := inflate(d_stream, Z_NO_FLUSH);
- if err = Z_STREAM_END then
- break;
- CHECK_ERR(err, 'inflate');
- end;
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- if StrComp(PChar(uncompr), hello) <> 0 then
- EXIT_ERR('bad inflate')
- else
- WriteLn('inflate(): ', PChar(uncompr));
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with large buffers and dynamic change of compression level
- *)
-{$IFDEF TEST_DEFLATE}
-procedure test_large_deflate(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
-begin
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_BEST_SPEED);
- CHECK_ERR(err, 'deflateInit');
-
- c_stream.next_out := compr;
- c_stream.avail_out := Integer(comprLen);
-
- (* At this point, uncompr is still mostly zeroes, so it should compress
- * very well:
- *)
- c_stream.next_in := uncompr;
- c_stream.avail_in := Integer(uncomprLen);
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
- if c_stream.avail_in <> 0 then
- EXIT_ERR('deflate not greedy');
-
- (* Feed in already compressed data and switch to no compression: *)
- deflateParams(c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
- c_stream.next_in := compr;
- c_stream.avail_in := Integer(comprLen div 2);
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
-
- (* Switch back to compressing mode: *)
- deflateParams(c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
- c_stream.next_in := uncompr;
- c_stream.avail_in := Integer(uncomprLen);
- err := deflate(c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'deflate');
-
- err := deflate(c_stream, Z_FINISH);
- if err <> Z_STREAM_END then
- EXIT_ERR('deflate should report Z_STREAM_END');
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflate with large buffers
- *)
-{$IFDEF TEST_INFLATE}
-procedure test_large_inflate(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- d_stream.next_in := compr;
- d_stream.avail_in := Integer(comprLen);
-
- err := inflateInit(d_stream);
- CHECK_ERR(err, 'inflateInit');
-
- while TRUE do
- begin
- d_stream.next_out := uncompr; (* discard the output *)
- d_stream.avail_out := Integer(uncomprLen);
- err := inflate(d_stream, Z_NO_FLUSH);
- if err = Z_STREAM_END then
- break;
- CHECK_ERR(err, 'large inflate');
- end;
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- if d_stream.total_out <> 2 * uncomprLen + comprLen div 2 then
- begin
- WriteLn('bad large inflate: ', d_stream.total_out);
- Halt(1);
- end
- else
- WriteLn('large_inflate(): OK');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with full flush
- *)
-{$IFDEF TEST_FLUSH}
-procedure test_flush(compr: Pointer; var comprLen : LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
- len: Integer;
-begin
- len := StrLen(hello)+1;
-
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
- CHECK_ERR(err, 'deflateInit');
-
- c_stream.next_in := hello;
- c_stream.next_out := compr;
- c_stream.avail_in := 3;
- c_stream.avail_out := Integer(comprLen);
- err := deflate(c_stream, Z_FULL_FLUSH);
- CHECK_ERR(err, 'deflate');
-
- Inc(PByteArray(compr)^[3]); (* force an error in first compressed block *)
- c_stream.avail_in := len - 3;
-
- err := deflate(c_stream, Z_FINISH);
- if err <> Z_STREAM_END then
- CHECK_ERR(err, 'deflate');
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-
- comprLen := c_stream.total_out;
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflateSync()
- *)
-{$IFDEF TEST_SYNC}
-procedure test_sync(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen : LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- d_stream.next_in := compr;
- d_stream.avail_in := 2; (* just read the zlib header *)
-
- err := inflateInit(d_stream);
- CHECK_ERR(err, 'inflateInit');
-
- d_stream.next_out := uncompr;
- d_stream.avail_out := Integer(uncomprLen);
-
- inflate(d_stream, Z_NO_FLUSH);
- CHECK_ERR(err, 'inflate');
-
- d_stream.avail_in := Integer(comprLen-2); (* read all compressed data *)
- err := inflateSync(d_stream); (* but skip the damaged part *)
- CHECK_ERR(err, 'inflateSync');
-
- err := inflate(d_stream, Z_FINISH);
- if err <> Z_DATA_ERROR then
- EXIT_ERR('inflate should report DATA_ERROR');
- (* Because of incorrect adler32 *)
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- WriteLn('after inflateSync(): hel', PChar(uncompr));
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test deflate with preset dictionary
- *)
-{$IFDEF TEST_DICT}
-procedure test_dict_deflate(compr: Pointer; comprLen: LongInt);
-var c_stream: z_stream; (* compression stream *)
- err: Integer;
-begin
- c_stream.zalloc := NIL;
- c_stream.zfree := NIL;
- c_stream.opaque := NIL;
-
- err := deflateInit(c_stream, Z_BEST_COMPRESSION);
- CHECK_ERR(err, 'deflateInit');
-
- err := deflateSetDictionary(c_stream, dictionary, StrLen(dictionary));
- CHECK_ERR(err, 'deflateSetDictionary');
-
- dictId := c_stream.adler;
- c_stream.next_out := compr;
- c_stream.avail_out := Integer(comprLen);
-
- c_stream.next_in := hello;
- c_stream.avail_in := StrLen(hello)+1;
-
- err := deflate(c_stream, Z_FINISH);
- if err <> Z_STREAM_END then
- EXIT_ERR('deflate should report Z_STREAM_END');
-
- err := deflateEnd(c_stream);
- CHECK_ERR(err, 'deflateEnd');
-end;
-{$ENDIF}
-
-(* ===========================================================================
- * Test inflate with a preset dictionary
- *)
-{$IFDEF TEST_DICT}
-procedure test_dict_inflate(compr: Pointer; comprLen: LongInt;
- uncompr: Pointer; uncomprLen: LongInt);
-var err: Integer;
- d_stream: z_stream; (* decompression stream *)
-begin
- StrCopy(PChar(uncompr), 'garbage');
-
- d_stream.zalloc := NIL;
- d_stream.zfree := NIL;
- d_stream.opaque := NIL;
-
- d_stream.next_in := compr;
- d_stream.avail_in := Integer(comprLen);
-
- err := inflateInit(d_stream);
- CHECK_ERR(err, 'inflateInit');
-
- d_stream.next_out := uncompr;
- d_stream.avail_out := Integer(uncomprLen);
-
- while TRUE do
- begin
- err := inflate(d_stream, Z_NO_FLUSH);
- if err = Z_STREAM_END then
- break;
- if err = Z_NEED_DICT then
- begin
- if d_stream.adler <> dictId then
- EXIT_ERR('unexpected dictionary');
- err := inflateSetDictionary(d_stream, dictionary, StrLen(dictionary));
- end;
- CHECK_ERR(err, 'inflate with dict');
- end;
-
- err := inflateEnd(d_stream);
- CHECK_ERR(err, 'inflateEnd');
-
- if StrComp(PChar(uncompr), hello) <> 0 then
- EXIT_ERR('bad inflate with dict')
- else
- WriteLn('inflate with dictionary: ', PChar(uncompr));
-end;
-{$ENDIF}
-
-var compr, uncompr: Pointer;
- comprLen, uncomprLen: LongInt;
-
-begin
- if zlibVersion^ <> ZLIB_VERSION[1] then
- EXIT_ERR('Incompatible zlib version');
-
- WriteLn('zlib version: ', zlibVersion);
- WriteLn('zlib compile flags: ', Format('0x%x', [zlibCompileFlags]));
-
- comprLen := 10000 * SizeOf(Integer); (* don't overflow on MSDOS *)
- uncomprLen := comprLen;
- GetMem(compr, comprLen);
- GetMem(uncompr, uncomprLen);
- if (compr = NIL) or (uncompr = NIL) then
- EXIT_ERR('Out of memory');
- (* compr and uncompr are cleared to avoid reading uninitialized
- * data and to ensure that uncompr compresses well.
- *)
- FillChar(compr^, comprLen, 0);
- FillChar(uncompr^, uncomprLen, 0);
-
- {$IFDEF TEST_COMPRESS}
- WriteLn('** Testing compress');
- test_compress(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_GZIO}
- WriteLn('** Testing gzio');
- if ParamCount >= 1 then
- test_gzio(ParamStr(1), uncompr, uncomprLen)
- else
- test_gzio(TESTFILE, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_DEFLATE}
- WriteLn('** Testing deflate with small buffers');
- test_deflate(compr, comprLen);
- {$ENDIF}
- {$IFDEF TEST_INFLATE}
- WriteLn('** Testing inflate with small buffers');
- test_inflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_DEFLATE}
- WriteLn('** Testing deflate with large buffers');
- test_large_deflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
- {$IFDEF TEST_INFLATE}
- WriteLn('** Testing inflate with large buffers');
- test_large_inflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- {$IFDEF TEST_FLUSH}
- WriteLn('** Testing deflate with full flush');
- test_flush(compr, comprLen);
- {$ENDIF}
- {$IFDEF TEST_SYNC}
- WriteLn('** Testing inflateSync');
- test_sync(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
- comprLen := uncomprLen;
-
- {$IFDEF TEST_DICT}
- WriteLn('** Testing deflate and inflate with preset dictionary');
- test_dict_deflate(compr, comprLen);
- test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
- {$ENDIF}
-
- FreeMem(compr, comprLen);
- FreeMem(uncompr, uncomprLen);
-end.
+++ /dev/null
-
-This directory contains a Pascal (Delphi, Kylix) interface to the
-zlib data compression library.
-
-
-Directory listing
-=================
-
-zlibd32.mak makefile for Borland C++
-example.pas usage example of zlib
-zlibpas.pas the Pascal interface to zlib
-readme.txt this file
-
-
-Compatibility notes
-===================
-
-- Although the name "zlib" would have been more normal for the
- zlibpas unit, this name is already taken by Borland's ZLib unit.
- This is somehow unfortunate, because that unit is not a genuine
- interface to the full-fledged zlib functionality, but a suite of
- class wrappers around zlib streams. Other essential features,
- such as checksums, are missing.
- It would have been more appropriate for that unit to have a name
- like "ZStreams", or something similar.
-
-- The C and zlib-supplied types int, uInt, long, uLong, etc. are
- translated directly into Pascal types of similar sizes (Integer,
- LongInt, etc.), to avoid namespace pollution. In particular,
- there is no conversion of unsigned int into a Pascal unsigned
- integer. The Word type is non-portable and has the same size
- (16 bits) both in a 16-bit and in a 32-bit environment, unlike
- Integer. Even if there is a 32-bit Cardinal type, there is no
- real need for unsigned int in zlib under a 32-bit environment.
-
-- Except for the callbacks, the zlib function interfaces are
- assuming the calling convention normally used in Pascal
- (__pascal for DOS and Windows16, __fastcall for Windows32).
- Since the cdecl keyword is used, the old Turbo Pascal does
- not work with this interface.
-
-- The gz* function interfaces are not translated, to avoid
- interfacing problems with the C runtime library. Besides,
- gzprintf(gzFile file, const char *format, ...)
- cannot be translated into Pascal.
-
-
-Legal issues
-============
-
-The zlibpas interface is:
- Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler.
- Copyright (C) 1998 by Bob Dellaca.
- Copyright (C) 2003 by Cosmin Truta.
-
-The example program is:
- Copyright (C) 1995-2003 by Jean-loup Gailly.
- Copyright (C) 1998,1999,2000 by Jacques Nomssi Nzali.
- Copyright (C) 2003 by Cosmin Truta.
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
+++ /dev/null
-# Makefile for zlib
-# For use with Delphi and C++ Builder under Win32
-# Updated for zlib 1.2.x by Cosmin Truta
-
-# ------------ Borland C++ ------------
-
-# This project uses the Delphi (fastcall/register) calling convention:
-LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
-
-CC = bcc32
-LD = bcc32
-AR = tlib
-# do not use "-pr" in CFLAGS
-CFLAGS = -a -d -k- -O2 $(LOC)
-LDFLAGS =
-
-
-# variables
-ZLIB_LIB = zlib.lib
-
-OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
-OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
-OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
-
-
-# targets
-all: $(ZLIB_LIB) example.exe minigzip.exe
-
-.c.obj:
- $(CC) -c $(CFLAGS) $*.c
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
-
-minigzip.obj: minigzip.c zlib.h zconf.h
-
-
-# For the sake of the old Borland make,
-# the command line is cut to fit in the MS-DOS 128 byte limit:
-$(ZLIB_LIB): $(OBJ1) $(OBJ2)
- -del $(ZLIB_LIB)
- $(AR) $(ZLIB_LIB) $(OBJP1)
- $(AR) $(ZLIB_LIB) $(OBJP2)
-
-
-# testing
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-example.exe: example.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
-
-minigzip.exe: minigzip.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
-
-
-# cleanup
-clean:
- -del *.obj
- -del *.exe
- -del *.lib
- -del *.tds
- -del zlib.bak
- -del foo.gz
-
+++ /dev/null
-(* zlibpas -- Pascal interface to the zlib data compression library
- *
- * Copyright (C) 2003 Cosmin Truta.
- * Derived from original sources by Bob Dellaca.
- * For conditions of distribution and use, see copyright notice in readme.txt
- *)
-
-unit zlibpas;
-
-interface
-
-const
- ZLIB_VERSION = '1.2.3';
-
-type
- alloc_func = function(opaque: Pointer; items, size: Integer): Pointer;
- cdecl;
- free_func = procedure(opaque, address: Pointer);
- cdecl;
-
- in_func = function(opaque: Pointer; var buf: PByte): Integer;
- cdecl;
- out_func = function(opaque: Pointer; buf: PByte; size: Integer): Integer;
- cdecl;
-
- z_streamp = ^z_stream;
- z_stream = packed record
- next_in: PChar; (* next input byte *)
- avail_in: Integer; (* number of bytes available at next_in *)
- total_in: LongInt; (* total nb of input bytes read so far *)
-
- next_out: PChar; (* next output byte should be put there *)
- avail_out: Integer; (* remaining free space at next_out *)
- total_out: LongInt; (* total nb of bytes output so far *)
-
- msg: PChar; (* last error message, NULL if no error *)
- state: Pointer; (* not visible by applications *)
-
- zalloc: alloc_func; (* used to allocate the internal state *)
- zfree: free_func; (* used to free the internal state *)
- opaque: Pointer; (* private data object passed to zalloc and zfree *)
-
- data_type: Integer; (* best guess about the data type: ascii or binary *)
- adler: LongInt; (* adler32 value of the uncompressed data *)
- reserved: LongInt; (* reserved for future use *)
- end;
-
-(* constants *)
-const
- Z_NO_FLUSH = 0;
- Z_PARTIAL_FLUSH = 1;
- Z_SYNC_FLUSH = 2;
- Z_FULL_FLUSH = 3;
- Z_FINISH = 4;
-
- Z_OK = 0;
- Z_STREAM_END = 1;
- Z_NEED_DICT = 2;
- Z_ERRNO = -1;
- Z_STREAM_ERROR = -2;
- Z_DATA_ERROR = -3;
- Z_MEM_ERROR = -4;
- Z_BUF_ERROR = -5;
- Z_VERSION_ERROR = -6;
-
- Z_NO_COMPRESSION = 0;
- Z_BEST_SPEED = 1;
- Z_BEST_COMPRESSION = 9;
- Z_DEFAULT_COMPRESSION = -1;
-
- Z_FILTERED = 1;
- Z_HUFFMAN_ONLY = 2;
- Z_RLE = 3;
- Z_DEFAULT_STRATEGY = 0;
-
- Z_BINARY = 0;
- Z_ASCII = 1;
- Z_UNKNOWN = 2;
-
- Z_DEFLATED = 8;
-
-(* basic functions *)
-function zlibVersion: PChar;
-function deflateInit(var strm: z_stream; level: Integer): Integer;
-function deflate(var strm: z_stream; flush: Integer): Integer;
-function deflateEnd(var strm: z_stream): Integer;
-function inflateInit(var strm: z_stream): Integer;
-function inflate(var strm: z_stream; flush: Integer): Integer;
-function inflateEnd(var strm: z_stream): Integer;
-
-(* advanced functions *)
-function deflateInit2(var strm: z_stream; level, method, windowBits,
- memLevel, strategy: Integer): Integer;
-function deflateSetDictionary(var strm: z_stream; const dictionary: PChar;
- dictLength: Integer): Integer;
-function deflateCopy(var dest, source: z_stream): Integer;
-function deflateReset(var strm: z_stream): Integer;
-function deflateParams(var strm: z_stream; level, strategy: Integer): Integer;
-function deflateBound(var strm: z_stream; sourceLen: LongInt): LongInt;
-function deflatePrime(var strm: z_stream; bits, value: Integer): Integer;
-function inflateInit2(var strm: z_stream; windowBits: Integer): Integer;
-function inflateSetDictionary(var strm: z_stream; const dictionary: PChar;
- dictLength: Integer): Integer;
-function inflateSync(var strm: z_stream): Integer;
-function inflateCopy(var dest, source: z_stream): Integer;
-function inflateReset(var strm: z_stream): Integer;
-function inflateBackInit(var strm: z_stream;
- windowBits: Integer; window: PChar): Integer;
-function inflateBack(var strm: z_stream; in_fn: in_func; in_desc: Pointer;
- out_fn: out_func; out_desc: Pointer): Integer;
-function inflateBackEnd(var strm: z_stream): Integer;
-function zlibCompileFlags: LongInt;
-
-(* utility functions *)
-function compress(dest: PChar; var destLen: LongInt;
- const source: PChar; sourceLen: LongInt): Integer;
-function compress2(dest: PChar; var destLen: LongInt;
- const source: PChar; sourceLen: LongInt;
- level: Integer): Integer;
-function compressBound(sourceLen: LongInt): LongInt;
-function uncompress(dest: PChar; var destLen: LongInt;
- const source: PChar; sourceLen: LongInt): Integer;
-
-(* checksum functions *)
-function adler32(adler: LongInt; const buf: PChar; len: Integer): LongInt;
-function crc32(crc: LongInt; const buf: PChar; len: Integer): LongInt;
-
-(* various hacks, don't look :) *)
-function deflateInit_(var strm: z_stream; level: Integer;
- const version: PChar; stream_size: Integer): Integer;
-function inflateInit_(var strm: z_stream; const version: PChar;
- stream_size: Integer): Integer;
-function deflateInit2_(var strm: z_stream;
- level, method, windowBits, memLevel, strategy: Integer;
- const version: PChar; stream_size: Integer): Integer;
-function inflateInit2_(var strm: z_stream; windowBits: Integer;
- const version: PChar; stream_size: Integer): Integer;
-function inflateBackInit_(var strm: z_stream;
- windowBits: Integer; window: PChar;
- const version: PChar; stream_size: Integer): Integer;
-
-
-implementation
-
-{$L adler32.obj}
-{$L compress.obj}
-{$L crc32.obj}
-{$L deflate.obj}
-{$L infback.obj}
-{$L inffast.obj}
-{$L inflate.obj}
-{$L inftrees.obj}
-{$L trees.obj}
-{$L uncompr.obj}
-{$L zutil.obj}
-
-function adler32; external;
-function compress; external;
-function compress2; external;
-function compressBound; external;
-function crc32; external;
-function deflate; external;
-function deflateBound; external;
-function deflateCopy; external;
-function deflateEnd; external;
-function deflateInit_; external;
-function deflateInit2_; external;
-function deflateParams; external;
-function deflatePrime; external;
-function deflateReset; external;
-function deflateSetDictionary; external;
-function inflate; external;
-function inflateBack; external;
-function inflateBackEnd; external;
-function inflateBackInit_; external;
-function inflateCopy; external;
-function inflateEnd; external;
-function inflateInit_; external;
-function inflateInit2_; external;
-function inflateReset; external;
-function inflateSetDictionary; external;
-function inflateSync; external;
-function uncompress; external;
-function zlibCompileFlags; external;
-function zlibVersion; external;
-
-function deflateInit(var strm: z_stream; level: Integer): Integer;
-begin
- Result := deflateInit_(strm, level, ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function deflateInit2(var strm: z_stream; level, method, windowBits, memLevel,
- strategy: Integer): Integer;
-begin
- Result := deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
- ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function inflateInit(var strm: z_stream): Integer;
-begin
- Result := inflateInit_(strm, ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function inflateInit2(var strm: z_stream; windowBits: Integer): Integer;
-begin
- Result := inflateInit2_(strm, windowBits, ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function inflateBackInit(var strm: z_stream;
- windowBits: Integer; window: PChar): Integer;
-begin
- Result := inflateBackInit_(strm, windowBits, window,
- ZLIB_VERSION, sizeof(z_stream));
-end;
-
-function _malloc(Size: Integer): Pointer; cdecl;
-begin
- GetMem(Result, Size);
-end;
-
-procedure _free(Block: Pointer); cdecl;
-begin
- FreeMem(Block);
-end;
-
-procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
-begin
- FillChar(P^, count, B);
-end;
-
-procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
-begin
- Move(source^, dest^, count);
-end;
-
-end.
+++ /dev/null
-puff: puff.c puff.h
- cc -DTEST -o puff puff.c
-
-test: puff
- puff zeros.raw
-
-clean:
- rm -f puff puff.o
+++ /dev/null
-Puff -- A Simple Inflate
-3 Mar 2003
-Mark Adler
-madler@alumni.caltech.edu
-
-What this is --
-
-puff.c provides the routine puff() to decompress the deflate data format. It
-does so more slowly than zlib, but the code is about one-fifth the size of the
-inflate code in zlib, and written to be very easy to read.
-
-Why I wrote this --
-
-puff.c was written to document the deflate format unambiguously, by virtue of
-being working C code. It is meant to supplement RFC 1951, which formally
-describes the deflate format. I have received many questions on details of the
-deflate format, and I hope that reading this code will answer those questions.
-puff.c is heavily commented with details of the deflate format, especially
-those little nooks and cranies of the format that might not be obvious from a
-specification.
-
-puff.c may also be useful in applications where code size or memory usage is a
-very limited resource, and speed is not as important.
-
-How to use it --
-
-Well, most likely you should just be reading puff.c and using zlib for actual
-applications, but if you must ...
-
-Include puff.h in your code, which provides this prototype:
-
-int puff(unsigned char *dest, /* pointer to destination pointer */
- unsigned long *destlen, /* amount of output space */
- unsigned char *source, /* pointer to source data pointer */
- unsigned long *sourcelen); /* amount of input available */
-
-Then you can call puff() to decompress a deflate stream that is in memory in
-its entirety at source, to a sufficiently sized block of memory for the
-decompressed data at dest. puff() is the only external symbol in puff.c The
-only C library functions that puff.c needs are setjmp() and longjmp(), which
-are used to simplify error checking in the code to improve readabilty. puff.c
-does no memory allocation, and uses less than 2K bytes off of the stack.
-
-If destlen is not enough space for the uncompressed data, then inflate will
-return an error without writing more than destlen bytes. Note that this means
-that in order to decompress the deflate data successfully, you need to know
-the size of the uncompressed data ahead of time.
-
-If needed, puff() can determine the size of the uncompressed data with no
-output space. This is done by passing dest equal to (unsigned char *)0. Then
-the initial value of *destlen is ignored and *destlen is set to the length of
-the uncompressed data. So if the size of the uncompressed data is not known,
-then two passes of puff() can be used--first to determine the size, and second
-to do the actual inflation after allocating the appropriate memory. Not
-pretty, but it works. (This is one of the reasons you should be using zlib.)
-
-The deflate format is self-terminating. If the deflate stream does not end
-in *sourcelen bytes, puff() will return an error without reading at or past
-endsource.
-
-On return, *sourcelen is updated to the amount of input data consumed, and
-*destlen is updated to the size of the uncompressed data. See the comments
-in puff.c for the possible return codes for puff().
+++ /dev/null
-/*
- * puff.c
- * Copyright (C) 2002-2004 Mark Adler
- * For conditions of distribution and use, see copyright notice in puff.h
- * version 1.8, 9 Jan 2004
- *
- * puff.c is a simple inflate written to be an unambiguous way to specify the
- * deflate format. It is not written for speed but rather simplicity. As a
- * side benefit, this code might actually be useful when small code is more
- * important than speed, such as bootstrap applications. For typical deflate
- * data, zlib's inflate() is about four times as fast as puff(). zlib's
- * inflate compiles to around 20K on my machine, whereas puff.c compiles to
- * around 4K on my machine (a PowerPC using GNU cc). If the faster decode()
- * function here is used, then puff() is only twice as slow as zlib's
- * inflate().
- *
- * All dynamically allocated memory comes from the stack. The stack required
- * is less than 2K bytes. This code is compatible with 16-bit int's and
- * assumes that long's are at least 32 bits. puff.c uses the short data type,
- * assumed to be 16 bits, for arrays in order to to conserve memory. The code
- * works whether integers are stored big endian or little endian.
- *
- * In the comments below are "Format notes" that describe the inflate process
- * and document some of the less obvious aspects of the format. This source
- * code is meant to supplement RFC 1951, which formally describes the deflate
- * format:
- *
- * http://www.zlib.org/rfc-deflate.html
- */
-
-/*
- * Change history:
- *
- * 1.0 10 Feb 2002 - First version
- * 1.1 17 Feb 2002 - Clarifications of some comments and notes
- * - Update puff() dest and source pointers on negative
- * errors to facilitate debugging deflators
- * - Remove longest from struct huffman -- not needed
- * - Simplify offs[] index in construct()
- * - Add input size and checking, using longjmp() to
- * maintain easy readability
- * - Use short data type for large arrays
- * - Use pointers instead of long to specify source and
- * destination sizes to avoid arbitrary 4 GB limits
- * 1.2 17 Mar 2002 - Add faster version of decode(), doubles speed (!),
- * but leave simple version for readabilty
- * - Make sure invalid distances detected if pointers
- * are 16 bits
- * - Fix fixed codes table error
- * - Provide a scanning mode for determining size of
- * uncompressed data
- * 1.3 20 Mar 2002 - Go back to lengths for puff() parameters [Jean-loup]
- * - Add a puff.h file for the interface
- * - Add braces in puff() for else do [Jean-loup]
- * - Use indexes instead of pointers for readability
- * 1.4 31 Mar 2002 - Simplify construct() code set check
- * - Fix some comments
- * - Add FIXLCODES #define
- * 1.5 6 Apr 2002 - Minor comment fixes
- * 1.6 7 Aug 2002 - Minor format changes
- * 1.7 3 Mar 2003 - Added test code for distribution
- * - Added zlib-like license
- * 1.8 9 Jan 2004 - Added some comments on no distance codes case
- */
-
-#include <setjmp.h> /* for setjmp(), longjmp(), and jmp_buf */
-#include "puff.h" /* prototype for puff() */
-
-#define local static /* for local function definitions */
-#define NIL ((unsigned char *)0) /* for no output option */
-
-/*
- * Maximums for allocations and loops. It is not useful to change these --
- * they are fixed by the deflate format.
- */
-#define MAXBITS 15 /* maximum bits in a code */
-#define MAXLCODES 286 /* maximum number of literal/length codes */
-#define MAXDCODES 30 /* maximum number of distance codes */
-#define MAXCODES (MAXLCODES+MAXDCODES) /* maximum codes lengths to read */
-#define FIXLCODES 288 /* number of fixed literal/length codes */
-
-/* input and output state */
-struct state {
- /* output state */
- unsigned char *out; /* output buffer */
- unsigned long outlen; /* available space at out */
- unsigned long outcnt; /* bytes written to out so far */
-
- /* input state */
- unsigned char *in; /* input buffer */
- unsigned long inlen; /* available input at in */
- unsigned long incnt; /* bytes read so far */
- int bitbuf; /* bit buffer */
- int bitcnt; /* number of bits in bit buffer */
-
- /* input limit error return state for bits() and decode() */
- jmp_buf env;
-};
-
-/*
- * Return need bits from the input stream. This always leaves less than
- * eight bits in the buffer. bits() works properly for need == 0.
- *
- * Format notes:
- *
- * - Bits are stored in bytes from the least significant bit to the most
- * significant bit. Therefore bits are dropped from the bottom of the bit
- * buffer, using shift right, and new bytes are appended to the top of the
- * bit buffer, using shift left.
- */
-local int bits(struct state *s, int need)
-{
- long val; /* bit accumulator (can use up to 20 bits) */
-
- /* load at least need bits into val */
- val = s->bitbuf;
- while (s->bitcnt < need) {
- if (s->incnt == s->inlen) longjmp(s->env, 1); /* out of input */
- val |= (long)(s->in[s->incnt++]) << s->bitcnt; /* load eight bits */
- s->bitcnt += 8;
- }
-
- /* drop need bits and update buffer, always zero to seven bits left */
- s->bitbuf = (int)(val >> need);
- s->bitcnt -= need;
-
- /* return need bits, zeroing the bits above that */
- return (int)(val & ((1L << need) - 1));
-}
-
-/*
- * Process a stored block.
- *
- * Format notes:
- *
- * - After the two-bit stored block type (00), the stored block length and
- * stored bytes are byte-aligned for fast copying. Therefore any leftover
- * bits in the byte that has the last bit of the type, as many as seven, are
- * discarded. The value of the discarded bits are not defined and should not
- * be checked against any expectation.
- *
- * - The second inverted copy of the stored block length does not have to be
- * checked, but it's probably a good idea to do so anyway.
- *
- * - A stored block can have zero length. This is sometimes used to byte-align
- * subsets of the compressed data for random access or partial recovery.
- */
-local int stored(struct state *s)
-{
- unsigned len; /* length of stored block */
-
- /* discard leftover bits from current byte (assumes s->bitcnt < 8) */
- s->bitbuf = 0;
- s->bitcnt = 0;
-
- /* get length and check against its one's complement */
- if (s->incnt + 4 > s->inlen) return 2; /* not enough input */
- len = s->in[s->incnt++];
- len |= s->in[s->incnt++] << 8;
- if (s->in[s->incnt++] != (~len & 0xff) ||
- s->in[s->incnt++] != ((~len >> 8) & 0xff))
- return -2; /* didn't match complement! */
-
- /* copy len bytes from in to out */
- if (s->incnt + len > s->inlen) return 2; /* not enough input */
- if (s->out != NIL) {
- if (s->outcnt + len > s->outlen)
- return 1; /* not enough output space */
- while (len--)
- s->out[s->outcnt++] = s->in[s->incnt++];
- }
- else { /* just scanning */
- s->outcnt += len;
- s->incnt += len;
- }
-
- /* done with a valid stored block */
- return 0;
-}
-
-/*
- * Huffman code decoding tables. count[1..MAXBITS] is the number of symbols of
- * each length, which for a canonical code are stepped through in order.
- * symbol[] are the symbol values in canonical order, where the number of
- * entries is the sum of the counts in count[]. The decoding process can be
- * seen in the function decode() below.
- */
-struct huffman {
- short *count; /* number of symbols of each length */
- short *symbol; /* canonically ordered symbols */
-};
-
-/*
- * Decode a code from the stream s using huffman table h. Return the symbol or
- * a negative value if there is an error. If all of the lengths are zero, i.e.
- * an empty code, or if the code is incomplete and an invalid code is received,
- * then -9 is returned after reading MAXBITS bits.
- *
- * Format notes:
- *
- * - The codes as stored in the compressed data are bit-reversed relative to
- * a simple integer ordering of codes of the same lengths. Hence below the
- * bits are pulled from the compressed data one at a time and used to
- * build the code value reversed from what is in the stream in order to
- * permit simple integer comparisons for decoding. A table-based decoding
- * scheme (as used in zlib) does not need to do this reversal.
- *
- * - The first code for the shortest length is all zeros. Subsequent codes of
- * the same length are simply integer increments of the previous code. When
- * moving up a length, a zero bit is appended to the code. For a complete
- * code, the last code of the longest length will be all ones.
- *
- * - Incomplete codes are handled by this decoder, since they are permitted
- * in the deflate format. See the format notes for fixed() and dynamic().
- */
-#ifdef SLOW
-local int decode(struct state *s, struct huffman *h)
-{
- int len; /* current number of bits in code */
- int code; /* len bits being decoded */
- int first; /* first code of length len */
- int count; /* number of codes of length len */
- int index; /* index of first code of length len in symbol table */
-
- code = first = index = 0;
- for (len = 1; len <= MAXBITS; len++) {
- code |= bits(s, 1); /* get next bit */
- count = h->count[len];
- if (code < first + count) /* if length len, return symbol */
- return h->symbol[index + (code - first)];
- index += count; /* else update for next length */
- first += count;
- first <<= 1;
- code <<= 1;
- }
- return -9; /* ran out of codes */
-}
-
-/*
- * A faster version of decode() for real applications of this code. It's not
- * as readable, but it makes puff() twice as fast. And it only makes the code
- * a few percent larger.
- */
-#else /* !SLOW */
-local int decode(struct state *s, struct huffman *h)
-{
- int len; /* current number of bits in code */
- int code; /* len bits being decoded */
- int first; /* first code of length len */
- int count; /* number of codes of length len */
- int index; /* index of first code of length len in symbol table */
- int bitbuf; /* bits from stream */
- int left; /* bits left in next or left to process */
- short *next; /* next number of codes */
-
- bitbuf = s->bitbuf;
- left = s->bitcnt;
- code = first = index = 0;
- len = 1;
- next = h->count + 1;
- while (1) {
- while (left--) {
- code |= bitbuf & 1;
- bitbuf >>= 1;
- count = *next++;
- if (code < first + count) { /* if length len, return symbol */
- s->bitbuf = bitbuf;
- s->bitcnt = (s->bitcnt - len) & 7;
- return h->symbol[index + (code - first)];
- }
- index += count; /* else update for next length */
- first += count;
- first <<= 1;
- code <<= 1;
- len++;
- }
- left = (MAXBITS+1) - len;
- if (left == 0) break;
- if (s->incnt == s->inlen) longjmp(s->env, 1); /* out of input */
- bitbuf = s->in[s->incnt++];
- if (left > 8) left = 8;
- }
- return -9; /* ran out of codes */
-}
-#endif /* SLOW */
-
-/*
- * Given the list of code lengths length[0..n-1] representing a canonical
- * Huffman code for n symbols, construct the tables required to decode those
- * codes. Those tables are the number of codes of each length, and the symbols
- * sorted by length, retaining their original order within each length. The
- * return value is zero for a complete code set, negative for an over-
- * subscribed code set, and positive for an incomplete code set. The tables
- * can be used if the return value is zero or positive, but they cannot be used
- * if the return value is negative. If the return value is zero, it is not
- * possible for decode() using that table to return an error--any stream of
- * enough bits will resolve to a symbol. If the return value is positive, then
- * it is possible for decode() using that table to return an error for received
- * codes past the end of the incomplete lengths.
- *
- * Not used by decode(), but used for error checking, h->count[0] is the number
- * of the n symbols not in the code. So n - h->count[0] is the number of
- * codes. This is useful for checking for incomplete codes that have more than
- * one symbol, which is an error in a dynamic block.
- *
- * Assumption: for all i in 0..n-1, 0 <= length[i] <= MAXBITS
- * This is assured by the construction of the length arrays in dynamic() and
- * fixed() and is not verified by construct().
- *
- * Format notes:
- *
- * - Permitted and expected examples of incomplete codes are one of the fixed
- * codes and any code with a single symbol which in deflate is coded as one
- * bit instead of zero bits. See the format notes for fixed() and dynamic().
- *
- * - Within a given code length, the symbols are kept in ascending order for
- * the code bits definition.
- */
-local int construct(struct huffman *h, short *length, int n)
-{
- int symbol; /* current symbol when stepping through length[] */
- int len; /* current length when stepping through h->count[] */
- int left; /* number of possible codes left of current length */
- short offs[MAXBITS+1]; /* offsets in symbol table for each length */
-
- /* count number of codes of each length */
- for (len = 0; len <= MAXBITS; len++)
- h->count[len] = 0;
- for (symbol = 0; symbol < n; symbol++)
- (h->count[length[symbol]])++; /* assumes lengths are within bounds */
- if (h->count[0] == n) /* no codes! */
- return 0; /* complete, but decode() will fail */
-
- /* check for an over-subscribed or incomplete set of lengths */
- left = 1; /* one possible code of zero length */
- for (len = 1; len <= MAXBITS; len++) {
- left <<= 1; /* one more bit, double codes left */
- left -= h->count[len]; /* deduct count from possible codes */
- if (left < 0) return left; /* over-subscribed--return negative */
- } /* left > 0 means incomplete */
-
- /* generate offsets into symbol table for each length for sorting */
- offs[1] = 0;
- for (len = 1; len < MAXBITS; len++)
- offs[len + 1] = offs[len] + h->count[len];
-
- /*
- * put symbols in table sorted by length, by symbol order within each
- * length
- */
- for (symbol = 0; symbol < n; symbol++)
- if (length[symbol] != 0)
- h->symbol[offs[length[symbol]]++] = symbol;
-
- /* return zero for complete set, positive for incomplete set */
- return left;
-}
-
-/*
- * Decode literal/length and distance codes until an end-of-block code.
- *
- * Format notes:
- *
- * - Compressed data that is after the block type if fixed or after the code
- * description if dynamic is a combination of literals and length/distance
- * pairs terminated by and end-of-block code. Literals are simply Huffman
- * coded bytes. A length/distance pair is a coded length followed by a
- * coded distance to represent a string that occurs earlier in the
- * uncompressed data that occurs again at the current location.
- *
- * - Literals, lengths, and the end-of-block code are combined into a single
- * code of up to 286 symbols. They are 256 literals (0..255), 29 length
- * symbols (257..285), and the end-of-block symbol (256).
- *
- * - There are 256 possible lengths (3..258), and so 29 symbols are not enough
- * to represent all of those. Lengths 3..10 and 258 are in fact represented
- * by just a length symbol. Lengths 11..257 are represented as a symbol and
- * some number of extra bits that are added as an integer to the base length
- * of the length symbol. The number of extra bits is determined by the base
- * length symbol. These are in the static arrays below, lens[] for the base
- * lengths and lext[] for the corresponding number of extra bits.
- *
- * - The reason that 258 gets its own symbol is that the longest length is used
- * often in highly redundant files. Note that 258 can also be coded as the
- * base value 227 plus the maximum extra value of 31. While a good deflate
- * should never do this, it is not an error, and should be decoded properly.
- *
- * - If a length is decoded, including its extra bits if any, then it is
- * followed a distance code. There are up to 30 distance symbols. Again
- * there are many more possible distances (1..32768), so extra bits are added
- * to a base value represented by the symbol. The distances 1..4 get their
- * own symbol, but the rest require extra bits. The base distances and
- * corresponding number of extra bits are below in the static arrays dist[]
- * and dext[].
- *
- * - Literal bytes are simply written to the output. A length/distance pair is
- * an instruction to copy previously uncompressed bytes to the output. The
- * copy is from distance bytes back in the output stream, copying for length
- * bytes.
- *
- * - Distances pointing before the beginning of the output data are not
- * permitted.
- *
- * - Overlapped copies, where the length is greater than the distance, are
- * allowed and common. For example, a distance of one and a length of 258
- * simply copies the last byte 258 times. A distance of four and a length of
- * twelve copies the last four bytes three times. A simple forward copy
- * ignoring whether the length is greater than the distance or not implements
- * this correctly. You should not use memcpy() since its behavior is not
- * defined for overlapped arrays. You should not use memmove() or bcopy()
- * since though their behavior -is- defined for overlapping arrays, it is
- * defined to do the wrong thing in this case.
- */
-local int codes(struct state *s,
- struct huffman *lencode,
- struct huffman *distcode)
-{
- int symbol; /* decoded symbol */
- int len; /* length for copy */
- unsigned dist; /* distance for copy */
- static const short lens[29] = { /* Size base for length codes 257..285 */
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
- 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258};
- static const short lext[29] = { /* Extra bits for length codes 257..285 */
- 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
- 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
- static const short dists[30] = { /* Offset base for distance codes 0..29 */
- 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
- 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
- 8193, 12289, 16385, 24577};
- static const short dext[30] = { /* Extra bits for distance codes 0..29 */
- 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
- 7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
- 12, 12, 13, 13};
-
- /* decode literals and length/distance pairs */
- do {
- symbol = decode(s, lencode);
- if (symbol < 0) return symbol; /* invalid symbol */
- if (symbol < 256) { /* literal: symbol is the byte */
- /* write out the literal */
- if (s->out != NIL) {
- if (s->outcnt == s->outlen) return 1;
- s->out[s->outcnt] = symbol;
- }
- s->outcnt++;
- }
- else if (symbol > 256) { /* length */
- /* get and compute length */
- symbol -= 257;
- if (symbol >= 29) return -9; /* invalid fixed code */
- len = lens[symbol] + bits(s, lext[symbol]);
-
- /* get and check distance */
- symbol = decode(s, distcode);
- if (symbol < 0) return symbol; /* invalid symbol */
- dist = dists[symbol] + bits(s, dext[symbol]);
- if (dist > s->outcnt)
- return -10; /* distance too far back */
-
- /* copy length bytes from distance bytes back */
- if (s->out != NIL) {
- if (s->outcnt + len > s->outlen) return 1;
- while (len--) {
- s->out[s->outcnt] = s->out[s->outcnt - dist];
- s->outcnt++;
- }
- }
- else
- s->outcnt += len;
- }
- } while (symbol != 256); /* end of block symbol */
-
- /* done with a valid fixed or dynamic block */
- return 0;
-}
-
-/*
- * Process a fixed codes block.
- *
- * Format notes:
- *
- * - This block type can be useful for compressing small amounts of data for
- * which the size of the code descriptions in a dynamic block exceeds the
- * benefit of custom codes for that block. For fixed codes, no bits are
- * spent on code descriptions. Instead the code lengths for literal/length
- * codes and distance codes are fixed. The specific lengths for each symbol
- * can be seen in the "for" loops below.
- *
- * - The literal/length code is complete, but has two symbols that are invalid
- * and should result in an error if received. This cannot be implemented
- * simply as an incomplete code since those two symbols are in the "middle"
- * of the code. They are eight bits long and the longest literal/length\
- * code is nine bits. Therefore the code must be constructed with those
- * symbols, and the invalid symbols must be detected after decoding.
- *
- * - The fixed distance codes also have two invalid symbols that should result
- * in an error if received. Since all of the distance codes are the same
- * length, this can be implemented as an incomplete code. Then the invalid
- * codes are detected while decoding.
- */
-local int fixed(struct state *s)
-{
- static int virgin = 1;
- static short lencnt[MAXBITS+1], lensym[FIXLCODES];
- static short distcnt[MAXBITS+1], distsym[MAXDCODES];
- static struct huffman lencode = {lencnt, lensym};
- static struct huffman distcode = {distcnt, distsym};
-
- /* build fixed huffman tables if first call (may not be thread safe) */
- if (virgin) {
- int symbol;
- short lengths[FIXLCODES];
-
- /* literal/length table */
- for (symbol = 0; symbol < 144; symbol++)
- lengths[symbol] = 8;
- for (; symbol < 256; symbol++)
- lengths[symbol] = 9;
- for (; symbol < 280; symbol++)
- lengths[symbol] = 7;
- for (; symbol < FIXLCODES; symbol++)
- lengths[symbol] = 8;
- construct(&lencode, lengths, FIXLCODES);
-
- /* distance table */
- for (symbol = 0; symbol < MAXDCODES; symbol++)
- lengths[symbol] = 5;
- construct(&distcode, lengths, MAXDCODES);
-
- /* do this just once */
- virgin = 0;
- }
-
- /* decode data until end-of-block code */
- return codes(s, &lencode, &distcode);
-}
-
-/*
- * Process a dynamic codes block.
- *
- * Format notes:
- *
- * - A dynamic block starts with a description of the literal/length and
- * distance codes for that block. New dynamic blocks allow the compressor to
- * rapidly adapt to changing data with new codes optimized for that data.
- *
- * - The codes used by the deflate format are "canonical", which means that
- * the actual bits of the codes are generated in an unambiguous way simply
- * from the number of bits in each code. Therefore the code descriptions
- * are simply a list of code lengths for each symbol.
- *
- * - The code lengths are stored in order for the symbols, so lengths are
- * provided for each of the literal/length symbols, and for each of the
- * distance symbols.
- *
- * - If a symbol is not used in the block, this is represented by a zero as
- * as the code length. This does not mean a zero-length code, but rather
- * that no code should be created for this symbol. There is no way in the
- * deflate format to represent a zero-length code.
- *
- * - The maximum number of bits in a code is 15, so the possible lengths for
- * any code are 1..15.
- *
- * - The fact that a length of zero is not permitted for a code has an
- * interesting consequence. Normally if only one symbol is used for a given
- * code, then in fact that code could be represented with zero bits. However
- * in deflate, that code has to be at least one bit. So for example, if
- * only a single distance base symbol appears in a block, then it will be
- * represented by a single code of length one, in particular one 0 bit. This
- * is an incomplete code, since if a 1 bit is received, it has no meaning,
- * and should result in an error. So incomplete distance codes of one symbol
- * should be permitted, and the receipt of invalid codes should be handled.
- *
- * - It is also possible to have a single literal/length code, but that code
- * must be the end-of-block code, since every dynamic block has one. This
- * is not the most efficient way to create an empty block (an empty fixed
- * block is fewer bits), but it is allowed by the format. So incomplete
- * literal/length codes of one symbol should also be permitted.
- *
- * - If there are only literal codes and no lengths, then there are no distance
- * codes. This is represented by one distance code with zero bits.
- *
- * - The list of up to 286 length/literal lengths and up to 30 distance lengths
- * are themselves compressed using Huffman codes and run-length encoding. In
- * the list of code lengths, a 0 symbol means no code, a 1..15 symbol means
- * that length, and the symbols 16, 17, and 18 are run-length instructions.
- * Each of 16, 17, and 18 are followed by extra bits to define the length of
- * the run. 16 copies the last length 3 to 6 times. 17 represents 3 to 10
- * zero lengths, and 18 represents 11 to 138 zero lengths. Unused symbols
- * are common, hence the special coding for zero lengths.
- *
- * - The symbols for 0..18 are Huffman coded, and so that code must be
- * described first. This is simply a sequence of up to 19 three-bit values
- * representing no code (0) or the code length for that symbol (1..7).
- *
- * - A dynamic block starts with three fixed-size counts from which is computed
- * the number of literal/length code lengths, the number of distance code
- * lengths, and the number of code length code lengths (ok, you come up with
- * a better name!) in the code descriptions. For the literal/length and
- * distance codes, lengths after those provided are considered zero, i.e. no
- * code. The code length code lengths are received in a permuted order (see
- * the order[] array below) to make a short code length code length list more
- * likely. As it turns out, very short and very long codes are less likely
- * to be seen in a dynamic code description, hence what may appear initially
- * to be a peculiar ordering.
- *
- * - Given the number of literal/length code lengths (nlen) and distance code
- * lengths (ndist), then they are treated as one long list of nlen + ndist
- * code lengths. Therefore run-length coding can and often does cross the
- * boundary between the two sets of lengths.
- *
- * - So to summarize, the code description at the start of a dynamic block is
- * three counts for the number of code lengths for the literal/length codes,
- * the distance codes, and the code length codes. This is followed by the
- * code length code lengths, three bits each. This is used to construct the
- * code length code which is used to read the remainder of the lengths. Then
- * the literal/length code lengths and distance lengths are read as a single
- * set of lengths using the code length codes. Codes are constructed from
- * the resulting two sets of lengths, and then finally you can start
- * decoding actual compressed data in the block.
- *
- * - For reference, a "typical" size for the code description in a dynamic
- * block is around 80 bytes.
- */
-local int dynamic(struct state *s)
-{
- int nlen, ndist, ncode; /* number of lengths in descriptor */
- int index; /* index of lengths[] */
- int err; /* construct() return value */
- short lengths[MAXCODES]; /* descriptor code lengths */
- short lencnt[MAXBITS+1], lensym[MAXLCODES]; /* lencode memory */
- short distcnt[MAXBITS+1], distsym[MAXDCODES]; /* distcode memory */
- struct huffman lencode = {lencnt, lensym}; /* length code */
- struct huffman distcode = {distcnt, distsym}; /* distance code */
- static const short order[19] = /* permutation of code length codes */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
- /* get number of lengths in each table, check lengths */
- nlen = bits(s, 5) + 257;
- ndist = bits(s, 5) + 1;
- ncode = bits(s, 4) + 4;
- if (nlen > MAXLCODES || ndist > MAXDCODES)
- return -3; /* bad counts */
-
- /* read code length code lengths (really), missing lengths are zero */
- for (index = 0; index < ncode; index++)
- lengths[order[index]] = bits(s, 3);
- for (; index < 19; index++)
- lengths[order[index]] = 0;
-
- /* build huffman table for code lengths codes (use lencode temporarily) */
- err = construct(&lencode, lengths, 19);
- if (err != 0) return -4; /* require complete code set here */
-
- /* read length/literal and distance code length tables */
- index = 0;
- while (index < nlen + ndist) {
- int symbol; /* decoded value */
- int len; /* last length to repeat */
-
- symbol = decode(s, &lencode);
- if (symbol < 16) /* length in 0..15 */
- lengths[index++] = symbol;
- else { /* repeat instruction */
- len = 0; /* assume repeating zeros */
- if (symbol == 16) { /* repeat last length 3..6 times */
- if (index == 0) return -5; /* no last length! */
- len = lengths[index - 1]; /* last length */
- symbol = 3 + bits(s, 2);
- }
- else if (symbol == 17) /* repeat zero 3..10 times */
- symbol = 3 + bits(s, 3);
- else /* == 18, repeat zero 11..138 times */
- symbol = 11 + bits(s, 7);
- if (index + symbol > nlen + ndist)
- return -6; /* too many lengths! */
- while (symbol--) /* repeat last or zero symbol times */
- lengths[index++] = len;
- }
- }
-
- /* build huffman table for literal/length codes */
- err = construct(&lencode, lengths, nlen);
- if (err < 0 || (err > 0 && nlen - lencode.count[0] != 1))
- return -7; /* only allow incomplete codes if just one code */
-
- /* build huffman table for distance codes */
- err = construct(&distcode, lengths + nlen, ndist);
- if (err < 0 || (err > 0 && ndist - distcode.count[0] != 1))
- return -8; /* only allow incomplete codes if just one code */
-
- /* decode data until end-of-block code */
- return codes(s, &lencode, &distcode);
-}
-
-/*
- * Inflate source to dest. On return, destlen and sourcelen are updated to the
- * size of the uncompressed data and the size of the deflate data respectively.
- * On success, the return value of puff() is zero. If there is an error in the
- * source data, i.e. it is not in the deflate format, then a negative value is
- * returned. If there is not enough input available or there is not enough
- * output space, then a positive error is returned. In that case, destlen and
- * sourcelen are not updated to facilitate retrying from the beginning with the
- * provision of more input data or more output space. In the case of invalid
- * inflate data (a negative error), the dest and source pointers are updated to
- * facilitate the debugging of deflators.
- *
- * puff() also has a mode to determine the size of the uncompressed output with
- * no output written. For this dest must be (unsigned char *)0. In this case,
- * the input value of *destlen is ignored, and on return *destlen is set to the
- * size of the uncompressed output.
- *
- * The return codes are:
- *
- * 2: available inflate data did not terminate
- * 1: output space exhausted before completing inflate
- * 0: successful inflate
- * -1: invalid block type (type == 3)
- * -2: stored block length did not match one's complement
- * -3: dynamic block code description: too many length or distance codes
- * -4: dynamic block code description: code lengths codes incomplete
- * -5: dynamic block code description: repeat lengths with no first length
- * -6: dynamic block code description: repeat more than specified lengths
- * -7: dynamic block code description: invalid literal/length code lengths
- * -8: dynamic block code description: invalid distance code lengths
- * -9: invalid literal/length or distance code in fixed or dynamic block
- * -10: distance is too far back in fixed or dynamic block
- *
- * Format notes:
- *
- * - Three bits are read for each block to determine the kind of block and
- * whether or not it is the last block. Then the block is decoded and the
- * process repeated if it was not the last block.
- *
- * - The leftover bits in the last byte of the deflate data after the last
- * block (if it was a fixed or dynamic block) are undefined and have no
- * expected values to check.
- */
-int puff(unsigned char *dest, /* pointer to destination pointer */
- unsigned long *destlen, /* amount of output space */
- unsigned char *source, /* pointer to source data pointer */
- unsigned long *sourcelen) /* amount of input available */
-{
- struct state s; /* input/output state */
- int last, type; /* block information */
- int err; /* return value */
-
- /* initialize output state */
- s.out = dest;
- s.outlen = *destlen; /* ignored if dest is NIL */
- s.outcnt = 0;
-
- /* initialize input state */
- s.in = source;
- s.inlen = *sourcelen;
- s.incnt = 0;
- s.bitbuf = 0;
- s.bitcnt = 0;
-
- /* return if bits() or decode() tries to read past available input */
- if (setjmp(s.env) != 0) /* if came back here via longjmp() */
- err = 2; /* then skip do-loop, return error */
- else {
- /* process blocks until last block or error */
- do {
- last = bits(&s, 1); /* one if last block */
- type = bits(&s, 2); /* block type 0..3 */
- err = type == 0 ? stored(&s) :
- (type == 1 ? fixed(&s) :
- (type == 2 ? dynamic(&s) :
- -1)); /* type == 3, invalid */
- if (err != 0) break; /* return with error */
- } while (!last);
- }
-
- /* update the lengths and return */
- if (err <= 0) {
- *destlen = s.outcnt;
- *sourcelen = s.incnt;
- }
- return err;
-}
-
-#ifdef TEST
-/* Example of how to use puff() */
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-local unsigned char *yank(char *name, unsigned long *len)
-{
- unsigned long size;
- unsigned char *buf;
- FILE *in;
- struct stat s;
-
- *len = 0;
- if (stat(name, &s)) return NULL;
- if ((s.st_mode & S_IFMT) != S_IFREG) return NULL;
- size = (unsigned long)(s.st_size);
- if (size == 0 || (off_t)size != s.st_size) return NULL;
- in = fopen(name, "r");
- if (in == NULL) return NULL;
- buf = malloc(size);
- if (buf != NULL && fread(buf, 1, size, in) != size) {
- free(buf);
- buf = NULL;
- }
- fclose(in);
- *len = size;
- return buf;
-}
-
-int main(int argc, char **argv)
-{
- int ret;
- unsigned char *source;
- unsigned long len, sourcelen, destlen;
-
- if (argc < 2) return 2;
- source = yank(argv[1], &len);
- if (source == NULL) return 2;
- sourcelen = len;
- ret = puff(NIL, &destlen, source, &sourcelen);
- if (ret)
- printf("puff() failed with return code %d\n", ret);
- else {
- printf("puff() succeeded uncompressing %lu bytes\n", destlen);
- if (sourcelen < len) printf("%lu compressed bytes unused\n",
- len - sourcelen);
- }
- free(source);
- return ret;
-}
-#endif
+++ /dev/null
-/* puff.h
- Copyright (C) 2002, 2003 Mark Adler, all rights reserved
- version 1.7, 3 Mar 2002
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Mark Adler madler@alumni.caltech.edu
- */
-
-
-/*
- * See puff.c for purpose and usage.
- */
-int puff(unsigned char *dest, /* pointer to destination pointer */
- unsigned long *destlen, /* amount of output space */
- unsigned char *source, /* pointer to source data pointer */
- unsigned long *sourcelen); /* amount of input available */
+++ /dev/null
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include <windows.h>\r
-\r
-#include "zlib.h"\r
-\r
-\r
-void MyDoMinus64(LARGE_INTEGER *R,LARGE_INTEGER A,LARGE_INTEGER B)\r
-{\r
- R->HighPart = A.HighPart - B.HighPart;\r
- if (A.LowPart >= B.LowPart)\r
- R->LowPart = A.LowPart - B.LowPart;\r
- else\r
- {\r
- R->LowPart = A.LowPart - B.LowPart;\r
- R->HighPart --;\r
- }\r
-}\r
-\r
-#ifdef _M_X64\r
-// see http://msdn2.microsoft.com/library/twchhe95(en-us,vs.80).aspx for __rdtsc\r
-unsigned __int64 __rdtsc(void);\r
-void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64)\r
-{\r
- // printf("rdtsc = %I64x\n",__rdtsc());\r
- pbeginTime64->QuadPart=__rdtsc();\r
-}\r
-\r
-LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)\r
-{\r
- LARGE_INTEGER LIres;\r
- unsigned _int64 res=__rdtsc()-((unsigned _int64)(beginTime64.QuadPart));\r
- LIres.QuadPart=res;\r
- // printf("rdtsc = %I64x\n",__rdtsc());\r
- return LIres;\r
-}\r
-#else\r
-#ifdef _M_IX86\r
-void myGetRDTSC32(LARGE_INTEGER * pbeginTime64)\r
-{\r
- DWORD dwEdx,dwEax;\r
- _asm\r
- {\r
- rdtsc\r
- mov dwEax,eax\r
- mov dwEdx,edx\r
- }\r
- pbeginTime64->LowPart=dwEax;\r
- pbeginTime64->HighPart=dwEdx;\r
-}\r
-\r
-void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64)\r
-{\r
- myGetRDTSC32(pbeginTime64);\r
-}\r
-\r
-LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)\r
-{\r
- LARGE_INTEGER LIres,endTime64;\r
- myGetRDTSC32(&endTime64);\r
-\r
- LIres.LowPart=LIres.HighPart=0;\r
- MyDoMinus64(&LIres,endTime64,beginTime64);\r
- return LIres;\r
-}\r
-#else\r
-void myGetRDTSC32(LARGE_INTEGER * pbeginTime64)\r
-{\r
-}\r
-\r
-void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64)\r
-{\r
-}\r
-\r
-LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)\r
-{\r
- LARGE_INTEGER lr;\r
- lr.QuadPart=0;\r
- return lr;\r
-}\r
-#endif\r
-#endif\r
-\r
-void BeginCountPerfCounter(LARGE_INTEGER * pbeginTime64,BOOL fComputeTimeQueryPerf)\r
-{\r
- if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(pbeginTime64)))\r
- {\r
- pbeginTime64->LowPart = GetTickCount();\r
- pbeginTime64->HighPart = 0;\r
- }\r
-}\r
-\r
-DWORD GetMsecSincePerfCounter(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)\r
-{\r
- LARGE_INTEGER endTime64,ticksPerSecond,ticks;\r
- DWORDLONG ticksShifted,tickSecShifted;\r
- DWORD dwLog=16+0;\r
- DWORD dwRet;\r
- if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(&endTime64)))\r
- dwRet = (GetTickCount() - beginTime64.LowPart)*1;\r
- else\r
- {\r
- MyDoMinus64(&ticks,endTime64,beginTime64);\r
- QueryPerformanceFrequency(&ticksPerSecond);\r
-\r
- \r
- {\r
- ticksShifted = Int64ShrlMod32(*(DWORDLONG*)&ticks,dwLog);\r
- tickSecShifted = Int64ShrlMod32(*(DWORDLONG*)&ticksPerSecond,dwLog);\r
- \r
- } \r
-\r
- dwRet = (DWORD)((((DWORD)ticksShifted)*1000)/(DWORD)(tickSecShifted));\r
- dwRet *=1;\r
- }\r
- return dwRet;\r
-}\r
-\r
-int ReadFileMemory(const char* filename,long* plFileSize,void** pFilePtr)\r
-{\r
- FILE* stream;\r
- void* ptr;\r
- int retVal=1;\r
- stream=fopen(filename, "rb");\r
- if (stream==NULL)\r
- return 0;\r
-\r
- fseek(stream,0,SEEK_END);\r
-\r
- *plFileSize=ftell(stream);\r
- fseek(stream,0,SEEK_SET);\r
- ptr=malloc((*plFileSize)+1);\r
- if (ptr==NULL)\r
- retVal=0;\r
- else\r
- {\r
- if (fread(ptr, 1, *plFileSize,stream) != (*plFileSize))\r
- retVal=0;\r
- }\r
- fclose(stream);\r
- *pFilePtr=ptr;\r
- return retVal;\r
-}\r
-\r
-int main(int argc, char *argv[])\r
-{\r
- int BlockSizeCompress=0x8000;\r
- int BlockSizeUncompress=0x8000;\r
- int cprLevel=Z_DEFAULT_COMPRESSION ;\r
- long lFileSize;\r
- unsigned char* FilePtr;\r
- long lBufferSizeCpr;\r
- long lBufferSizeUncpr;\r
- long lCompressedSize=0;\r
- unsigned char* CprPtr;\r
- unsigned char* UncprPtr;\r
- long lSizeCpr,lSizeUncpr;\r
- DWORD dwGetTick,dwMsecQP;\r
- LARGE_INTEGER li_qp,li_rdtsc,dwResRdtsc;\r
-\r
- if (argc<=1)\r
- {\r
- printf("run TestZlib <File> [BlockSizeCompress] [BlockSizeUncompress] [compres. level]\n");\r
- return 0;\r
- }\r
-\r
- if (ReadFileMemory(argv[1],&lFileSize,&FilePtr)==0)\r
- {\r
- printf("error reading %s\n",argv[1]);\r
- return 1;\r
- }\r
- else printf("file %s read, %u bytes\n",argv[1],lFileSize);\r
-\r
- if (argc>=3)\r
- BlockSizeCompress=atol(argv[2]);\r
-\r
- if (argc>=4)\r
- BlockSizeUncompress=atol(argv[3]);\r
-\r
- if (argc>=5)\r
- cprLevel=(int)atol(argv[4]);\r
-\r
- lBufferSizeCpr = lFileSize + (lFileSize/0x10) + 0x200;\r
- lBufferSizeUncpr = lBufferSizeCpr;\r
-\r
- CprPtr=(unsigned char*)malloc(lBufferSizeCpr + BlockSizeCompress);\r
-\r
- BeginCountPerfCounter(&li_qp,TRUE);\r
- dwGetTick=GetTickCount();\r
- BeginCountRdtsc(&li_rdtsc);\r
- {\r
- z_stream zcpr;\r
- int ret=Z_OK;\r
- long lOrigToDo = lFileSize;\r
- long lOrigDone = 0;\r
- int step=0;\r
- memset(&zcpr,0,sizeof(z_stream));\r
- deflateInit(&zcpr,cprLevel);\r
-\r
- zcpr.next_in = FilePtr;\r
- zcpr.next_out = CprPtr;\r
-\r
-\r
- do\r
- {\r
- long all_read_before = zcpr.total_in;\r
- zcpr.avail_in = min(lOrigToDo,BlockSizeCompress);\r
- zcpr.avail_out = BlockSizeCompress;\r
- ret=deflate(&zcpr,(zcpr.avail_in==lOrigToDo) ? Z_FINISH : Z_SYNC_FLUSH);\r
- lOrigDone += (zcpr.total_in-all_read_before);\r
- lOrigToDo -= (zcpr.total_in-all_read_before);\r
- step++;\r
- } while (ret==Z_OK);\r
-\r
- lSizeCpr=zcpr.total_out;\r
- deflateEnd(&zcpr);\r
- dwGetTick=GetTickCount()-dwGetTick;\r
- dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE);\r
- dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE);\r
- printf("total compress size = %u, in %u step\n",lSizeCpr,step);\r
- printf("time = %u msec = %f sec\n",dwGetTick,dwGetTick/(double)1000.);\r
- printf("defcpr time QP = %u msec = %f sec\n",dwMsecQP,dwMsecQP/(double)1000.);\r
- printf("defcpr result rdtsc = %I64x\n\n",dwResRdtsc.QuadPart);\r
- }\r
-\r
- CprPtr=(unsigned char*)realloc(CprPtr,lSizeCpr);\r
- UncprPtr=(unsigned char*)malloc(lBufferSizeUncpr + BlockSizeUncompress);\r
-\r
- BeginCountPerfCounter(&li_qp,TRUE);\r
- dwGetTick=GetTickCount();\r
- BeginCountRdtsc(&li_rdtsc);\r
- {\r
- z_stream zcpr;\r
- int ret=Z_OK;\r
- long lOrigToDo = lSizeCpr;\r
- long lOrigDone = 0;\r
- int step=0;\r
- memset(&zcpr,0,sizeof(z_stream));\r
- inflateInit(&zcpr);\r
-\r
- zcpr.next_in = CprPtr;\r
- zcpr.next_out = UncprPtr;\r
-\r
-\r
- do\r
- {\r
- long all_read_before = zcpr.total_in;\r
- zcpr.avail_in = min(lOrigToDo,BlockSizeUncompress);\r
- zcpr.avail_out = BlockSizeUncompress;\r
- ret=inflate(&zcpr,Z_SYNC_FLUSH);\r
- lOrigDone += (zcpr.total_in-all_read_before);\r
- lOrigToDo -= (zcpr.total_in-all_read_before);\r
- step++;\r
- } while (ret==Z_OK);\r
-\r
- lSizeUncpr=zcpr.total_out;\r
- inflateEnd(&zcpr);\r
- dwGetTick=GetTickCount()-dwGetTick;\r
- dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE);\r
- dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE);\r
- printf("total uncompress size = %u, in %u step\n",lSizeUncpr,step);\r
- printf("time = %u msec = %f sec\n",dwGetTick,dwGetTick/(double)1000.);\r
- printf("uncpr time QP = %u msec = %f sec\n",dwMsecQP,dwMsecQP/(double)1000.);\r
- printf("uncpr result rdtsc = %I64x\n\n",dwResRdtsc.QuadPart);\r
- }\r
-\r
- if (lSizeUncpr==lFileSize)\r
- {\r
- if (memcmp(FilePtr,UncprPtr,lFileSize)==0)\r
- printf("compare ok\n");\r
-\r
- }\r
-\r
- return 0;\r
-}\r
+++ /dev/null
-To build testzLib with Visual Studio 2005:\r
-\r
-copy to a directory file from :\r
-- root of zLib tree\r
-- contrib/testzlib\r
-- contrib/masmx86\r
-- contrib/masmx64\r
-- contrib/vstudio/vc7\r
-\r
-and open testzlib8.sln
\ No newline at end of file
+++ /dev/null
-CC=cc
-CFLAGS=-g
-
-untgz: untgz.o ../../libz.a
- $(CC) $(CFLAGS) -o untgz untgz.o -L../.. -lz
-
-untgz.o: untgz.c ../../zlib.h
- $(CC) $(CFLAGS) -c -I../.. untgz.c
-
-../../libz.a:
- cd ../..; ./configure; make
-
-clean:
- rm -f untgz untgz.o *~
+++ /dev/null
-CC=cl
-CFLAGS=-MD
-
-untgz.exe: untgz.obj ..\..\zlib.lib
- $(CC) $(CFLAGS) untgz.obj ..\..\zlib.lib
-
-untgz.obj: untgz.c ..\..\zlib.h
- $(CC) $(CFLAGS) -c -I..\.. untgz.c
-
-..\..\zlib.lib:
- cd ..\..
- $(MAKE) -f win32\makefile.msc
- cd contrib\untgz
-
-clean:
- -del untgz.obj
- -del untgz.exe
+++ /dev/null
-/*
- * untgz.c -- Display contents and extract files from a gzip'd TAR file
- *
- * written by Pedro A. Aranda Gutierrez <paag@tid.es>
- * adaptation to Unix by Jean-loup Gailly <jloup@gzip.org>
- * various fixes by Cosmin Truta <cosmint@cs.ubbcluj.ro>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-
-#include "zlib.h"
-
-#ifdef unix
-# include <unistd.h>
-#else
-# include <direct.h>
-# include <io.h>
-#endif
-
-#ifdef WIN32
-#include <windows.h>
-# ifndef F_OK
-# define F_OK 0
-# endif
-# define mkdir(dirname,mode) _mkdir(dirname)
-# ifdef _MSC_VER
-# define access(path,mode) _access(path,mode)
-# define chmod(path,mode) _chmod(path,mode)
-# define strdup(str) _strdup(str)
-# endif
-#else
-# include <utime.h>
-#endif
-
-
-/* values used in typeflag field */
-
-#define REGTYPE '0' /* regular file */
-#define AREGTYPE '\0' /* regular file */
-#define LNKTYPE '1' /* link */
-#define SYMTYPE '2' /* reserved */
-#define CHRTYPE '3' /* character special */
-#define BLKTYPE '4' /* block special */
-#define DIRTYPE '5' /* directory */
-#define FIFOTYPE '6' /* FIFO special */
-#define CONTTYPE '7' /* reserved */
-
-/* GNU tar extensions */
-
-#define GNUTYPE_DUMPDIR 'D' /* file names from dumped directory */
-#define GNUTYPE_LONGLINK 'K' /* long link name */
-#define GNUTYPE_LONGNAME 'L' /* long file name */
-#define GNUTYPE_MULTIVOL 'M' /* continuation of file from another volume */
-#define GNUTYPE_NAMES 'N' /* file name that does not fit into main hdr */
-#define GNUTYPE_SPARSE 'S' /* sparse file */
-#define GNUTYPE_VOLHDR 'V' /* tape/volume header */
-
-
-/* tar header */
-
-#define BLOCKSIZE 512
-#define SHORTNAMESIZE 100
-
-struct tar_header
-{ /* byte offset */
- char name[100]; /* 0 */
- char mode[8]; /* 100 */
- char uid[8]; /* 108 */
- char gid[8]; /* 116 */
- char size[12]; /* 124 */
- char mtime[12]; /* 136 */
- char chksum[8]; /* 148 */
- char typeflag; /* 156 */
- char linkname[100]; /* 157 */
- char magic[6]; /* 257 */
- char version[2]; /* 263 */
- char uname[32]; /* 265 */
- char gname[32]; /* 297 */
- char devmajor[8]; /* 329 */
- char devminor[8]; /* 337 */
- char prefix[155]; /* 345 */
- /* 500 */
-};
-
-union tar_buffer
-{
- char buffer[BLOCKSIZE];
- struct tar_header header;
-};
-
-struct attr_item
-{
- struct attr_item *next;
- char *fname;
- int mode;
- time_t time;
-};
-
-enum { TGZ_EXTRACT, TGZ_LIST, TGZ_INVALID };
-
-char *TGZfname OF((const char *));
-void TGZnotfound OF((const char *));
-
-int getoct OF((char *, int));
-char *strtime OF((time_t *));
-int setfiletime OF((char *, time_t));
-void push_attr OF((struct attr_item **, char *, int, time_t));
-void restore_attr OF((struct attr_item **));
-
-int ExprMatch OF((char *, char *));
-
-int makedir OF((char *));
-int matchname OF((int, int, char **, char *));
-
-void error OF((const char *));
-int tar OF((gzFile, int, int, int, char **));
-
-void help OF((int));
-int main OF((int, char **));
-
-char *prog;
-
-const char *TGZsuffix[] = { "\0", ".tar", ".tar.gz", ".taz", ".tgz", NULL };
-
-/* return the file name of the TGZ archive */
-/* or NULL if it does not exist */
-
-char *TGZfname (const char *arcname)
-{
- static char buffer[1024];
- int origlen,i;
-
- strcpy(buffer,arcname);
- origlen = strlen(buffer);
-
- for (i=0; TGZsuffix[i]; i++)
- {
- strcpy(buffer+origlen,TGZsuffix[i]);
- if (access(buffer,F_OK) == 0)
- return buffer;
- }
- return NULL;
-}
-
-
-/* error message for the filename */
-
-void TGZnotfound (const char *arcname)
-{
- int i;
-
- fprintf(stderr,"%s: Couldn't find ",prog);
- for (i=0;TGZsuffix[i];i++)
- fprintf(stderr,(TGZsuffix[i+1]) ? "%s%s, " : "or %s%s\n",
- arcname,
- TGZsuffix[i]);
- exit(1);
-}
-
-
-/* convert octal digits to int */
-/* on error return -1 */
-
-int getoct (char *p,int width)
-{
- int result = 0;
- char c;
-
- while (width--)
- {
- c = *p++;
- if (c == 0)
- break;
- if (c == ' ')
- continue;
- if (c < '0' || c > '7')
- return -1;
- result = result * 8 + (c - '0');
- }
- return result;
-}
-
-
-/* convert time_t to string */
-/* use the "YYYY/MM/DD hh:mm:ss" format */
-
-char *strtime (time_t *t)
-{
- struct tm *local;
- static char result[32];
-
- local = localtime(t);
- sprintf(result,"%4d/%02d/%02d %02d:%02d:%02d",
- local->tm_year+1900, local->tm_mon+1, local->tm_mday,
- local->tm_hour, local->tm_min, local->tm_sec);
- return result;
-}
-
-
-/* set file time */
-
-int setfiletime (char *fname,time_t ftime)
-{
-#ifdef WIN32
- static int isWinNT = -1;
- SYSTEMTIME st;
- FILETIME locft, modft;
- struct tm *loctm;
- HANDLE hFile;
- int result;
-
- loctm = localtime(&ftime);
- if (loctm == NULL)
- return -1;
-
- st.wYear = (WORD)loctm->tm_year + 1900;
- st.wMonth = (WORD)loctm->tm_mon + 1;
- st.wDayOfWeek = (WORD)loctm->tm_wday;
- st.wDay = (WORD)loctm->tm_mday;
- st.wHour = (WORD)loctm->tm_hour;
- st.wMinute = (WORD)loctm->tm_min;
- st.wSecond = (WORD)loctm->tm_sec;
- st.wMilliseconds = 0;
- if (!SystemTimeToFileTime(&st, &locft) ||
- !LocalFileTimeToFileTime(&locft, &modft))
- return -1;
-
- if (isWinNT < 0)
- isWinNT = (GetVersion() < 0x80000000) ? 1 : 0;
- hFile = CreateFile(fname, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
- (isWinNT ? FILE_FLAG_BACKUP_SEMANTICS : 0),
- NULL);
- if (hFile == INVALID_HANDLE_VALUE)
- return -1;
- result = SetFileTime(hFile, NULL, NULL, &modft) ? 0 : -1;
- CloseHandle(hFile);
- return result;
-#else
- struct utimbuf settime;
-
- settime.actime = settime.modtime = ftime;
- return utime(fname,&settime);
-#endif
-}
-
-
-/* push file attributes */
-
-void push_attr(struct attr_item **list,char *fname,int mode,time_t time)
-{
- struct attr_item *item;
-
- item = (struct attr_item *)malloc(sizeof(struct attr_item));
- if (item == NULL)
- error("Out of memory");
- item->fname = strdup(fname);
- item->mode = mode;
- item->time = time;
- item->next = *list;
- *list = item;
-}
-
-
-/* restore file attributes */
-
-void restore_attr(struct attr_item **list)
-{
- struct attr_item *item, *prev;
-
- for (item = *list; item != NULL; )
- {
- setfiletime(item->fname,item->time);
- chmod(item->fname,item->mode);
- prev = item;
- item = item->next;
- free(prev);
- }
- *list = NULL;
-}
-
-
-/* match regular expression */
-
-#define ISSPECIAL(c) (((c) == '*') || ((c) == '/'))
-
-int ExprMatch (char *string,char *expr)
-{
- while (1)
- {
- if (ISSPECIAL(*expr))
- {
- if (*expr == '/')
- {
- if (*string != '\\' && *string != '/')
- return 0;
- string ++; expr++;
- }
- else if (*expr == '*')
- {
- if (*expr ++ == 0)
- return 1;
- while (*++string != *expr)
- if (*string == 0)
- return 0;
- }
- }
- else
- {
- if (*string != *expr)
- return 0;
- if (*expr++ == 0)
- return 1;
- string++;
- }
- }
-}
-
-
-/* recursive mkdir */
-/* abort on ENOENT; ignore other errors like "directory already exists" */
-/* return 1 if OK */
-/* 0 on error */
-
-int makedir (char *newdir)
-{
- char *buffer = strdup(newdir);
- char *p;
- int len = strlen(buffer);
-
- if (len <= 0) {
- free(buffer);
- return 0;
- }
- if (buffer[len-1] == '/') {
- buffer[len-1] = '\0';
- }
- if (mkdir(buffer, 0755) == 0)
- {
- free(buffer);
- return 1;
- }
-
- p = buffer+1;
- while (1)
- {
- char hold;
-
- while(*p && *p != '\\' && *p != '/')
- p++;
- hold = *p;
- *p = 0;
- if ((mkdir(buffer, 0755) == -1) && (errno == ENOENT))
- {
- fprintf(stderr,"%s: Couldn't create directory %s\n",prog,buffer);
- free(buffer);
- return 0;
- }
- if (hold == 0)
- break;
- *p++ = hold;
- }
- free(buffer);
- return 1;
-}
-
-
-int matchname (int arg,int argc,char **argv,char *fname)
-{
- if (arg == argc) /* no arguments given (untgz tgzarchive) */
- return 1;
-
- while (arg < argc)
- if (ExprMatch(fname,argv[arg++]))
- return 1;
-
- return 0; /* ignore this for the moment being */
-}
-
-
-/* tar file list or extract */
-
-int tar (gzFile in,int action,int arg,int argc,char **argv)
-{
- union tar_buffer buffer;
- int len;
- int err;
- int getheader = 1;
- int remaining = 0;
- FILE *outfile = NULL;
- char fname[BLOCKSIZE];
- int tarmode;
- time_t tartime;
- struct attr_item *attributes = NULL;
-
- if (action == TGZ_LIST)
- printf(" date time size file\n"
- " ---------- -------- --------- -------------------------------------\n");
- while (1)
- {
- len = gzread(in, &buffer, BLOCKSIZE);
- if (len < 0)
- error(gzerror(in, &err));
- /*
- * Always expect complete blocks to process
- * the tar information.
- */
- if (len != BLOCKSIZE)
- {
- action = TGZ_INVALID; /* force error exit */
- remaining = 0; /* force I/O cleanup */
- }
-
- /*
- * If we have to get a tar header
- */
- if (getheader >= 1)
- {
- /*
- * if we met the end of the tar
- * or the end-of-tar block,
- * we are done
- */
- if (len == 0 || buffer.header.name[0] == 0)
- break;
-
- tarmode = getoct(buffer.header.mode,8);
- tartime = (time_t)getoct(buffer.header.mtime,12);
- if (tarmode == -1 || tartime == (time_t)-1)
- {
- buffer.header.name[0] = 0;
- action = TGZ_INVALID;
- }
-
- if (getheader == 1)
- {
- strncpy(fname,buffer.header.name,SHORTNAMESIZE);
- if (fname[SHORTNAMESIZE-1] != 0)
- fname[SHORTNAMESIZE] = 0;
- }
- else
- {
- /*
- * The file name is longer than SHORTNAMESIZE
- */
- if (strncmp(fname,buffer.header.name,SHORTNAMESIZE-1) != 0)
- error("bad long name");
- getheader = 1;
- }
-
- /*
- * Act according to the type flag
- */
- switch (buffer.header.typeflag)
- {
- case DIRTYPE:
- if (action == TGZ_LIST)
- printf(" %s <dir> %s\n",strtime(&tartime),fname);
- if (action == TGZ_EXTRACT)
- {
- makedir(fname);
- push_attr(&attributes,fname,tarmode,tartime);
- }
- break;
- case REGTYPE:
- case AREGTYPE:
- remaining = getoct(buffer.header.size,12);
- if (remaining == -1)
- {
- action = TGZ_INVALID;
- break;
- }
- if (action == TGZ_LIST)
- printf(" %s %9d %s\n",strtime(&tartime),remaining,fname);
- else if (action == TGZ_EXTRACT)
- {
- if (matchname(arg,argc,argv,fname))
- {
- outfile = fopen(fname,"wb");
- if (outfile == NULL) {
- /* try creating directory */
- char *p = strrchr(fname, '/');
- if (p != NULL) {
- *p = '\0';
- makedir(fname);
- *p = '/';
- outfile = fopen(fname,"wb");
- }
- }
- if (outfile != NULL)
- printf("Extracting %s\n",fname);
- else
- fprintf(stderr, "%s: Couldn't create %s",prog,fname);
- }
- else
- outfile = NULL;
- }
- getheader = 0;
- break;
- case GNUTYPE_LONGLINK:
- case GNUTYPE_LONGNAME:
- remaining = getoct(buffer.header.size,12);
- if (remaining < 0 || remaining >= BLOCKSIZE)
- {
- action = TGZ_INVALID;
- break;
- }
- len = gzread(in, fname, BLOCKSIZE);
- if (len < 0)
- error(gzerror(in, &err));
- if (fname[BLOCKSIZE-1] != 0 || (int)strlen(fname) > remaining)
- {
- action = TGZ_INVALID;
- break;
- }
- getheader = 2;
- break;
- default:
- if (action == TGZ_LIST)
- printf(" %s <---> %s\n",strtime(&tartime),fname);
- break;
- }
- }
- else
- {
- unsigned int bytes = (remaining > BLOCKSIZE) ? BLOCKSIZE : remaining;
-
- if (outfile != NULL)
- {
- if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes)
- {
- fprintf(stderr,
- "%s: Error writing %s -- skipping\n",prog,fname);
- fclose(outfile);
- outfile = NULL;
- remove(fname);
- }
- }
- remaining -= bytes;
- }
-
- if (remaining == 0)
- {
- getheader = 1;
- if (outfile != NULL)
- {
- fclose(outfile);
- outfile = NULL;
- if (action != TGZ_INVALID)
- push_attr(&attributes,fname,tarmode,tartime);
- }
- }
-
- /*
- * Abandon if errors are found
- */
- if (action == TGZ_INVALID)
- {
- error("broken archive");
- break;
- }
- }
-
- /*
- * Restore file modes and time stamps
- */
- restore_attr(&attributes);
-
- if (gzclose(in) != Z_OK)
- error("failed gzclose");
-
- return 0;
-}
-
-
-/* ============================================================ */
-
-void help(int exitval)
-{
- printf("untgz version 0.2.1\n"
- " using zlib version %s\n\n",
- zlibVersion());
- printf("Usage: untgz file.tgz extract all files\n"
- " untgz file.tgz fname ... extract selected files\n"
- " untgz -l file.tgz list archive contents\n"
- " untgz -h display this help\n");
- exit(exitval);
-}
-
-void error(const char *msg)
-{
- fprintf(stderr, "%s: %s\n", prog, msg);
- exit(1);
-}
-
-
-/* ============================================================ */
-
-#if defined(WIN32) && defined(__GNUC__)
-int _CRT_glob = 0; /* disable argument globbing in MinGW */
-#endif
-
-int main(int argc,char **argv)
-{
- int action = TGZ_EXTRACT;
- int arg = 1;
- char *TGZfile;
- gzFile *f;
-
- prog = strrchr(argv[0],'\\');
- if (prog == NULL)
- {
- prog = strrchr(argv[0],'/');
- if (prog == NULL)
- {
- prog = strrchr(argv[0],':');
- if (prog == NULL)
- prog = argv[0];
- else
- prog++;
- }
- else
- prog++;
- }
- else
- prog++;
-
- if (argc == 1)
- help(0);
-
- if (strcmp(argv[arg],"-l") == 0)
- {
- action = TGZ_LIST;
- if (argc == ++arg)
- help(0);
- }
- else if (strcmp(argv[arg],"-h") == 0)
- {
- help(0);
- }
-
- if ((TGZfile = TGZfname(argv[arg])) == NULL)
- TGZnotfound(argv[arg]);
-
- ++arg;
- if ((action == TGZ_LIST) && (arg != argc))
- help(1);
-
-/*
- * Process the TGZ file
- */
- switch(action)
- {
- case TGZ_LIST:
- case TGZ_EXTRACT:
- f = gzopen(TGZfile,"rb");
- if (f == NULL)
- {
- fprintf(stderr,"%s: Couldn't gzopen %s\n",prog,TGZfile);
- return 1;
- }
- exit(tar(f, action, arg, argc, argv));
- break;
-
- default:
- error("Unknown option");
- exit(1);
- }
-
- return 0;
-}
+++ /dev/null
-Building instructions for the DLL versions of Zlib 1.2.3\r
-========================================================\r
-\r
-This directory contains projects that build zlib and minizip using\r
-Microsoft Visual C++ 7.0/7.1, and Visual C++ .\r
-\r
-You don't need to build these projects yourself. You can download the\r
-binaries from:\r
- http://www.winimage.com/zLibDll\r
-\r
-More information can be found at this site.\r
-\r
-\r
-Build instructions for Visual Studio 7.x (32 bits)\r
---------------------------------------------------\r
-- Uncompress current zlib, including all contrib/* files\r
-- Download the crtdll library from\r
- http://www.winimage.com/zLibDll/crtdll.zip\r
- Unzip crtdll.zip to extract crtdll.lib on contrib\vstudio\vc7.\r
-- Open contrib\vstudio\vc7\zlibvc.sln with Microsoft Visual C++ 7.x\r
- (Visual Studio .Net 2002 or 2003).\r
-\r
-Build instructions for Visual Studio 2005 (32 bits or 64 bits)\r
---------------------------------------------------------------\r
-- Uncompress current zlib, including all contrib/* files\r
-- For 32 bits only: download the crtdll library from\r
- http://www.winimage.com/zLibDll/crtdll.zip\r
- Unzip crtdll.zip to extract crtdll.lib on contrib\vstudio\vc8.\r
-- Open contrib\vstudio\vc8\zlibvc.sln with Microsoft Visual C++ 8.0\r
-\r
-Build instructions for Visual Studio 2005 64 bits, PSDK compiler\r
-----------------------------------------------------------------\r
-at the time of writing this text file, Visual Studio 2005 (and \r
- Microsoft Visual C++ 8.0) is on the beta 2 stage.\r
-Using you can get the free 64 bits compiler from Platform SDK, \r
- which is NOT a beta, and compile using the Visual studio 2005 IDE\r
-see http://www.winimage.com/misc/sdk64onvs2005/ for instruction\r
-\r
-- Uncompress current zlib, including all contrib/* files\r
-- start Visual Studio 2005 from a platform SDK command prompt, using\r
- the /useenv switch\r
-- Open contrib\vstudio\vc8\zlibvc.sln with Microsoft Visual C++ 8.0\r
-\r
-\r
-Important\r
----------\r
-- To use zlibwapi.dll in your application, you must define the\r
- macro ZLIB_WINAPI when compiling your application's source files.\r
-\r
-\r
-Additional notes\r
-----------------\r
-- This DLL, named zlibwapi.dll, is compatible to the old zlib.dll built\r
- by Gilles Vollant from the zlib 1.1.x sources, and distributed at\r
- http://www.winimage.com/zLibDll\r
- It uses the WINAPI calling convention for the exported functions, and\r
- includes the minizip functionality. If your application needs that\r
- particular build of zlib.dll, you can rename zlibwapi.dll to zlib.dll.\r
-\r
-- The new DLL was renamed because there exist several incompatible\r
- versions of zlib.dll on the Internet.\r
-\r
-- There is also an official DLL build of zlib, named zlib1.dll. This one\r
- is exporting the functions using the CDECL convention. See the file\r
- win32\DLL_FAQ.txt found in this zlib distribution.\r
-\r
-- There used to be a ZLIB_DLL macro in zlib 1.1.x, but now this symbol\r
- has a slightly different effect. To avoid compatibility problems, do\r
- not define it here.\r
-\r
-\r
-Gilles Vollant\r
-info@winimage.com\r
+++ /dev/null
-<?xml version="1.0" encoding = "Windows-1252"?>\r
-<VisualStudioProject\r
- ProjectType="Visual C++"\r
- Version="7.00"\r
- Name="miniunz"\r
- ProjectGUID="{C52F9E7B-498A-42BE-8DB4-85A15694382A}"\r
- Keyword="Win32Proj">\r
- <Platforms>\r
- <Platform\r
- Name="Win32"/>\r
- </Platforms>\r
- <Configurations>\r
- <Configuration\r
- Name="Debug|Win32"\r
- OutputDirectory="Debug"\r
- IntermediateDirectory="Debug"\r
- ConfigurationType="1"\r
- CharacterSet="2">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE"\r
- MinimalRebuild="TRUE"\r
- BasicRuntimeChecks="3"\r
- RuntimeLibrary="5"\r
- UsePrecompiledHeader="0"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="TRUE"\r
- DebugInformationFormat="4"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/miniunz.exe"\r
- LinkIncremental="2"\r
- GenerateDebugInformation="TRUE"\r
- ProgramDatabaseFile="$(OutDir)/miniunz.pdb"\r
- SubSystem="1"\r
- TargetMachine="1"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- <Tool\r
- Name="VCWebDeploymentTool"/>\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Win32"\r
- OutputDirectory="Release"\r
- IntermediateDirectory="Release"\r
- ConfigurationType="1"\r
- CharacterSet="2">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="TRUE"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE"\r
- StringPooling="TRUE"\r
- RuntimeLibrary="4"\r
- EnableFunctionLevelLinking="TRUE"\r
- UsePrecompiledHeader="0"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="TRUE"\r
- DebugInformationFormat="3"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/miniunz.exe"\r
- LinkIncremental="1"\r
- GenerateDebugInformation="TRUE"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="1"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- <Tool\r
- Name="VCWebDeploymentTool"/>\r
- </Configuration>\r
- </Configurations>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm">\r
- <File\r
- RelativePath="..\..\minizip\miniunz.c">\r
- </File>\r
- </Filter>\r
- <Filter\r
- Name="Header Files"\r
- Filter="h;hpp;hxx;hm;inl;inc">\r
- </Filter>\r
- <Filter\r
- Name="Resource Files"\r
- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">\r
- </Filter>\r
- <File\r
- RelativePath="ReleaseDll\zlibwapi.lib">\r
- </File>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-<?xml version="1.0" encoding = "Windows-1252"?>\r
-<VisualStudioProject\r
- ProjectType="Visual C++"\r
- Version="7.00"\r
- Name="minizip"\r
- ProjectGUID="{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"\r
- Keyword="Win32Proj">\r
- <Platforms>\r
- <Platform\r
- Name="Win32"/>\r
- </Platforms>\r
- <Configurations>\r
- <Configuration\r
- Name="Debug|Win32"\r
- OutputDirectory="Debug"\r
- IntermediateDirectory="Debug"\r
- ConfigurationType="1"\r
- CharacterSet="2">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE"\r
- MinimalRebuild="TRUE"\r
- BasicRuntimeChecks="3"\r
- RuntimeLibrary="5"\r
- UsePrecompiledHeader="0"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="TRUE"\r
- DebugInformationFormat="4"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/minizip.exe"\r
- LinkIncremental="2"\r
- GenerateDebugInformation="TRUE"\r
- ProgramDatabaseFile="$(OutDir)/minizip.pdb"\r
- SubSystem="1"\r
- TargetMachine="1"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- <Tool\r
- Name="VCWebDeploymentTool"/>\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Win32"\r
- OutputDirectory="Release"\r
- IntermediateDirectory="Release"\r
- ConfigurationType="1"\r
- CharacterSet="2">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="TRUE"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE"\r
- StringPooling="TRUE"\r
- RuntimeLibrary="4"\r
- EnableFunctionLevelLinking="TRUE"\r
- UsePrecompiledHeader="0"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="TRUE"\r
- DebugInformationFormat="3"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/minizip.exe"\r
- LinkIncremental="1"\r
- GenerateDebugInformation="TRUE"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="1"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- <Tool\r
- Name="VCWebDeploymentTool"/>\r
- </Configuration>\r
- </Configurations>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm">\r
- <File\r
- RelativePath="..\..\minizip\minizip.c">\r
- </File>\r
- </Filter>\r
- <Filter\r
- Name="Header Files"\r
- Filter="h;hpp;hxx;hm;inl;inc">\r
- </Filter>\r
- <Filter\r
- Name="Resource Files"\r
- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">\r
- </Filter>\r
- <File\r
- RelativePath="ReleaseDll\zlibwapi.lib">\r
- </File>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-<?xml version="1.0" encoding = "Windows-1252"?>\r
-<VisualStudioProject\r
- ProjectType="Visual C++"\r
- Version="7.00"\r
- Name="testZlibDll"\r
- ProjectGUID="{AA6666AA-E09F-4135-9C0C-4FE50C3C654C}"\r
- Keyword="Win32Proj">\r
- <Platforms>\r
- <Platform\r
- Name="Win32"/>\r
- </Platforms>\r
- <Configurations>\r
- <Configuration\r
- Name="Debug|Win32"\r
- OutputDirectory="Debug"\r
- IntermediateDirectory="Debug"\r
- ConfigurationType="1"\r
- CharacterSet="2">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE"\r
- MinimalRebuild="TRUE"\r
- BasicRuntimeChecks="3"\r
- RuntimeLibrary="5"\r
- UsePrecompiledHeader="0"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="TRUE"\r
- DebugInformationFormat="4"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="2"\r
- GenerateDebugInformation="TRUE"\r
- ProgramDatabaseFile="$(OutDir)/testzlib.pdb"\r
- SubSystem="1"\r
- TargetMachine="1"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- <Tool\r
- Name="VCWebDeploymentTool"/>\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Win32"\r
- OutputDirectory="Release"\r
- IntermediateDirectory="Release"\r
- ConfigurationType="1"\r
- CharacterSet="2">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="TRUE"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE"\r
- StringPooling="TRUE"\r
- RuntimeLibrary="4"\r
- EnableFunctionLevelLinking="TRUE"\r
- UsePrecompiledHeader="0"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="TRUE"\r
- DebugInformationFormat="3"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateDebugInformation="TRUE"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="1"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- <Tool\r
- Name="VCWebDeploymentTool"/>\r
- </Configuration>\r
- </Configurations>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm">\r
- <File\r
- RelativePath="..\..\testzlib\testzlib.c">\r
- </File>\r
- </Filter>\r
- <Filter\r
- Name="Header Files"\r
- Filter="h;hpp;hxx;hm;inl;inc">\r
- </Filter>\r
- <Filter\r
- Name="Resource Files"\r
- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe">\r
- </Filter>\r
- <File\r
- RelativePath="ReleaseDll\zlibwapi.lib">\r
- </File>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-#include <windows.h>\r
-\r
-#define IDR_VERSION1 1\r
-IDR_VERSION1 VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE\r
- FILEVERSION 1,2,3,0\r
- PRODUCTVERSION 1,2,3,0\r
- FILEFLAGSMASK VS_FFI_FILEFLAGSMASK\r
- FILEFLAGS 0\r
- FILEOS VOS_DOS_WINDOWS32\r
- FILETYPE VFT_DLL\r
- FILESUBTYPE 0 // not used\r
-BEGIN\r
- BLOCK "StringFileInfo"\r
- BEGIN\r
- BLOCK "040904E4"\r
- //language ID = U.S. English, char set = Windows, Multilingual\r
-\r
- BEGIN\r
- VALUE "FileDescription", "zlib data compression library\0"\r
- VALUE "FileVersion", "1.2.3.0\0"\r
- VALUE "InternalName", "zlib\0"\r
- VALUE "OriginalFilename", "zlib.dll\0"\r
- VALUE "ProductName", "ZLib.DLL\0"\r
- VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"\r
- VALUE "LegalCopyright", "(C) 1995-2003 Jean-loup Gailly & Mark Adler\0"\r
- END\r
- END\r
- BLOCK "VarFileInfo"\r
- BEGIN\r
- VALUE "Translation", 0x0409, 1252\r
- END\r
-END\r
+++ /dev/null
-<?xml version="1.0" encoding = "Windows-1252"?>\r
-<VisualStudioProject\r
- ProjectType="Visual C++"\r
- Version="7.00"\r
- Name="zlibstat"\r
- SccProjectName=""\r
- SccLocalPath="">\r
- <Platforms>\r
- <Platform\r
- Name="Win32"/>\r
- </Platforms>\r
- <Configurations>\r
- <Configuration\r
- Name="Debug|Win32"\r
- OutputDirectory=".\zlibstatDebug"\r
- IntermediateDirectory=".\zlibstatDebug"\r
- ConfigurationType="4"\r
- UseOfMFC="0"\r
- ATLMinimizesCRunTimeLibraryUsage="FALSE">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\..;..\..\masmx86"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI"\r
- ExceptionHandling="FALSE"\r
- RuntimeLibrary="5"\r
- PrecompiledHeaderFile=".\zlibstatDebug/zlibstat.pch"\r
- AssemblerListingLocation=".\zlibstatDebug/"\r
- ObjectFile=".\zlibstatDebug/"\r
- ProgramDataBaseFileName=".\zlibstatDebug/"\r
- WarningLevel="3"\r
- SuppressStartupBanner="TRUE"\r
- DebugInformationFormat="1"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLibrarianTool"\r
- AdditionalOptions="/NODEFAULTLIB "\r
- OutputFile=".\zlibstatDebug\zlibstat.lib"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- Culture="1036"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- </Configuration>\r
- <Configuration\r
- Name="ReleaseAxp|Win32"\r
- OutputDirectory=".\zlibsta0"\r
- IntermediateDirectory=".\zlibsta0"\r
- ConfigurationType="4"\r
- UseOfMFC="0"\r
- ATLMinimizesCRunTimeLibraryUsage="FALSE">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- InlineFunctionExpansion="1"\r
- AdditionalIncludeDirectories="..\..\..;..\..\masmx86"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI"\r
- StringPooling="TRUE"\r
- ExceptionHandling="FALSE"\r
- RuntimeLibrary="4"\r
- EnableFunctionLevelLinking="TRUE"\r
- PrecompiledHeaderFile=".\zlibsta0/zlibstat.pch"\r
- AssemblerListingLocation=".\zlibsta0/"\r
- ObjectFile=".\zlibsta0/"\r
- ProgramDataBaseFileName=".\zlibsta0/"\r
- WarningLevel="3"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLibrarianTool"\r
- AdditionalOptions="/NODEFAULTLIB "\r
- OutputFile=".\zlibsta0\zlibstat.lib"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Win32"\r
- OutputDirectory=".\zlibstat"\r
- IntermediateDirectory=".\zlibstat"\r
- ConfigurationType="4"\r
- UseOfMFC="0"\r
- ATLMinimizesCRunTimeLibraryUsage="FALSE">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- InlineFunctionExpansion="1"\r
- AdditionalIncludeDirectories="..\..\..;..\..\masmx86"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;ASMV;ASMINF"\r
- StringPooling="TRUE"\r
- ExceptionHandling="FALSE"\r
- RuntimeLibrary="4"\r
- EnableFunctionLevelLinking="TRUE"\r
- PrecompiledHeaderFile=".\zlibstat/zlibstat.pch"\r
- AssemblerListingLocation=".\zlibstat/"\r
- ObjectFile=".\zlibstat/"\r
- ProgramDataBaseFileName=".\zlibstat/"\r
- WarningLevel="3"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLibrarianTool"\r
- AdditionalOptions="..\..\masmx86\gvmat32.obj ..\..\masmx86\inffas32.obj /NODEFAULTLIB "\r
- OutputFile=".\zlibstat\zlibstat.lib"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- Culture="1036"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- </Configuration>\r
- <Configuration\r
- Name="ReleaseWithoutAsm|Win32"\r
- OutputDirectory="zlibstatWithoutAsm"\r
- IntermediateDirectory="zlibstatWithoutAsm"\r
- ConfigurationType="4"\r
- UseOfMFC="0"\r
- ATLMinimizesCRunTimeLibraryUsage="FALSE">\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- InlineFunctionExpansion="1"\r
- AdditionalIncludeDirectories="..\..\..;..\..\masmx86"\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI"\r
- StringPooling="TRUE"\r
- ExceptionHandling="FALSE"\r
- RuntimeLibrary="4"\r
- EnableFunctionLevelLinking="TRUE"\r
- PrecompiledHeaderFile=".\zlibstat/zlibstat.pch"\r
- AssemblerListingLocation=".\zlibstatWithoutAsm/"\r
- ObjectFile=".\zlibstatWithoutAsm/"\r
- ProgramDataBaseFileName=".\zlibstatWithoutAsm/"\r
- WarningLevel="3"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCCustomBuildTool"/>\r
- <Tool\r
- Name="VCLibrarianTool"\r
- AdditionalOptions=" /NODEFAULTLIB "\r
- OutputFile=".\zlibstatWithoutAsm\zlibstat.lib"\r
- SuppressStartupBanner="TRUE"/>\r
- <Tool\r
- Name="VCMIDLTool"/>\r
- <Tool\r
- Name="VCPostBuildEventTool"/>\r
- <Tool\r
- Name="VCPreBuildEventTool"/>\r
- <Tool\r
- Name="VCPreLinkEventTool"/>\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- Culture="1036"/>\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"/>\r
- </Configuration>\r
- </Configurations>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="">\r
- <File\r
- RelativePath="..\..\..\adler32.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\compress.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\crc32.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\deflate.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\masmx86\gvmat32c.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\gzio.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\infback.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\inffast.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\inflate.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\inftrees.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\minizip\ioapi.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\trees.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\uncompr.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\minizip\unzip.c">\r
- </File>\r
- <File\r
- RelativePath="..\..\minizip\zip.c">\r
- </File>\r
- <File\r
- RelativePath=".\zlib.rc">\r
- </File>\r
- <File\r
- RelativePath=".\zlibvc.def">\r
- </File>\r
- <File\r
- RelativePath="..\..\..\zutil.c">\r
- </File>\r
- </Filter>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-\r
-VERSION 1.23\r
-\r
-HEAPSIZE 1048576,8192\r
-\r
-EXPORTS\r
- adler32 @1\r
- compress @2\r
- crc32 @3\r
- deflate @4\r
- deflateCopy @5\r
- deflateEnd @6\r
- deflateInit2_ @7\r
- deflateInit_ @8\r
- deflateParams @9\r
- deflateReset @10\r
- deflateSetDictionary @11\r
- gzclose @12\r
- gzdopen @13\r
- gzerror @14\r
- gzflush @15\r
- gzopen @16\r
- gzread @17\r
- gzwrite @18\r
- inflate @19\r
- inflateEnd @20\r
- inflateInit2_ @21\r
- inflateInit_ @22\r
- inflateReset @23\r
- inflateSetDictionary @24\r
- inflateSync @25\r
- uncompress @26\r
- zlibVersion @27\r
- gzprintf @28\r
- gzputc @29\r
- gzgetc @30\r
- gzseek @31\r
- gzrewind @32\r
- gztell @33\r
- gzeof @34\r
- gzsetparams @35\r
- zError @36\r
- inflateSyncPoint @37\r
- get_crc_table @38\r
- compress2 @39\r
- gzputs @40\r
- gzgets @41\r
- inflateCopy @42\r
- inflateBackInit_ @43\r
- inflateBack @44\r
- inflateBackEnd @45\r
- compressBound @46\r
- deflateBound @47\r
- gzclearerr @48\r
- gzungetc @49\r
- zlibCompileFlags @50\r
- deflatePrime @51\r
-\r
- unzOpen @61\r
- unzClose @62\r
- unzGetGlobalInfo @63\r
- unzGetCurrentFileInfo @64\r
- unzGoToFirstFile @65\r
- unzGoToNextFile @66\r
- unzOpenCurrentFile @67\r
- unzReadCurrentFile @68\r
- unzOpenCurrentFile3 @69\r
- unztell @70\r
- unzeof @71\r
- unzCloseCurrentFile @72\r
- unzGetGlobalComment @73\r
- unzStringFileNameCompare @74\r
- unzLocateFile @75\r
- unzGetLocalExtrafield @76\r
- unzOpen2 @77\r
- unzOpenCurrentFile2 @78\r
- unzOpenCurrentFilePassword @79\r
-\r
- zipOpen @80\r
- zipOpenNewFileInZip @81\r
- zipWriteInFileInZip @82\r
- zipCloseFileInZip @83\r
- zipClose @84\r
- zipOpenNewFileInZip2 @86\r
- zipCloseFileInZipRaw @87\r
- zipOpen2 @88\r
- zipOpenNewFileInZip3 @89\r
-\r
- unzGetFilePos @100\r
- unzGoToFilePos @101\r
-\r
- fill_win32_filefunc @110\r
+++ /dev/null
-Microsoft Visual Studio Solution File, Format Version 7.00\r
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibstat", "zlibstat.vcproj", "{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"\r
-EndProject\r
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibvc", "zlibvc.vcproj", "{8FD826F8-3739-44E6-8CC8-997122E53B8D}"\r
-EndProject\r
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minizip", "minizip.vcproj", "{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"\r
-EndProject\r
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miniunz", "miniunz.vcproj", "{C52F9E7B-498A-42BE-8DB4-85A15694382A}"\r
-EndProject\r
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testZlibDll", "testzlib.vcproj", "{AA6666AA-E09F-4135-9C0C-4FE50C3C654C}"\r
-EndProject\r
-Global\r
- GlobalSection(SolutionConfiguration) = preSolution\r
- ConfigName.0 = Debug\r
- ConfigName.1 = Release\r
- ConfigName.2 = ReleaseAxp\r
- ConfigName.3 = ReleaseWithoutAsm\r
- ConfigName.4 = ReleaseWithoutCrtdll\r
- EndGlobalSection\r
- GlobalSection(ProjectDependencies) = postSolution\r
- EndGlobalSection\r
- GlobalSection(ProjectConfiguration) = postSolution\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug.ActiveCfg = Debug|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug.Build.0 = Debug|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release.ActiveCfg = Release|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release.Build.0 = Release|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseAxp.ActiveCfg = ReleaseAxp|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseAxp.Build.0 = ReleaseAxp|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm.ActiveCfg = ReleaseWithoutAsm|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm.Build.0 = ReleaseWithoutAsm|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutCrtdll.ActiveCfg = ReleaseAxp|Win32\r
- {745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutCrtdll.Build.0 = ReleaseAxp|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug.ActiveCfg = Debug|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug.Build.0 = Debug|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release.ActiveCfg = Release|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release.Build.0 = Release|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseAxp.ActiveCfg = ReleaseAxp|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseAxp.Build.0 = ReleaseAxp|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm.ActiveCfg = ReleaseWithoutAsm|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm.Build.0 = ReleaseWithoutAsm|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutCrtdll.ActiveCfg = ReleaseWithoutCrtdll|Win32\r
- {8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutCrtdll.Build.0 = ReleaseWithoutCrtdll|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug.ActiveCfg = Debug|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug.Build.0 = Debug|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release.ActiveCfg = Release|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release.Build.0 = Release|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseAxp.ActiveCfg = Release|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseAxp.Build.0 = Release|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm.ActiveCfg = Release|Win32\r
- {48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm.Build.0 = Release|Win32\r
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- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="x64\ZlibDllRelease\zlibwapi.lib"\r
- OutputFile="$(OutDir)/minizip.exe"\r
- LinkIncremental="1"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="17"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Itanium"\r
- OutputDirectory="ia64\$(ConfigurationName)"\r
- IntermediateDirectory="ia64\$(ConfigurationName)"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="2"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="ia64\ZlibDllRelease\zlibwapi.lib"\r
- OutputFile="$(OutDir)/minizip.exe"\r
- LinkIncremental="1"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="5"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- </Configurations>\r
- <References>\r
- </References>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"\r
- >\r
- <File\r
- RelativePath="..\..\minizip\minizip.c"\r
- >\r
- </File>\r
- </Filter>\r
- <Filter\r
- Name="Header Files"\r
- Filter="h;hpp;hxx;hm;inl;inc"\r
- >\r
- </Filter>\r
- <Filter\r
- Name="Resource Files"\r
- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"\r
- >\r
- </Filter>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-<?xml version="1.0" encoding="Windows-1252"?>\r
-<VisualStudioProject\r
- ProjectType="Visual C++"\r
- Version="8,00"\r
- Name="testzlib"\r
- ProjectGUID="{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"\r
- RootNamespace="testzlib"\r
- Keyword="Win32Proj"\r
- >\r
- <Platforms>\r
- <Platform\r
- Name="Win32"\r
- />\r
- <Platform\r
- Name="x64"\r
- />\r
- <Platform\r
- Name="Itanium"\r
- />\r
- </Platforms>\r
- <ToolFiles>\r
- </ToolFiles>\r
- <Configurations>\r
- <Configuration\r
- Name="Debug|Win32"\r
- OutputDirectory="x86\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="x86\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE"\r
- MinimalRebuild="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="1"\r
- BufferSecurityCheck="false"\r
- UsePrecompiledHeader="0"\r
- AssemblerOutput="4"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="4"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="..\..\masmx86\gvmat32.obj ..\..\masmx86\inffas32.obj"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="2"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- ProgramDatabaseFile="$(OutDir)/testzlib.pdb"\r
- SubSystem="1"\r
- TargetMachine="1"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Debug|x64"\r
- OutputDirectory="x64\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="x64\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="3"\r
- BufferSecurityCheck="false"\r
- AssemblerListingLocation="$(IntDir)\"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj"\r
- GenerateManifest="false"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Debug|Itanium"\r
- OutputDirectory="ia64\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="ia64\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="2"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;WIN64"\r
- MinimalRebuild="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="3"\r
- BufferSecurityCheck="false"\r
- UsePrecompiledHeader="0"\r
- AssemblerOutput="4"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="2"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- ProgramDatabaseFile="$(OutDir)/testzlib.pdb"\r
- SubSystem="1"\r
- TargetMachine="5"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="ReleaseWithoutAsm|Win32"\r
- OutputDirectory="x86\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="x86\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- CharacterSet="2"\r
- WholeProgramOptimization="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="0"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="1"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="ReleaseWithoutAsm|x64"\r
- OutputDirectory="x64\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="x64\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- WholeProgramOptimization="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- AssemblerListingLocation="$(IntDir)\"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies=""\r
- GenerateManifest="false"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="ReleaseWithoutAsm|Itanium"\r
- OutputDirectory="ia64\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="ia64\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- CharacterSet="2"\r
- WholeProgramOptimization="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="2"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;WIN64"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="5"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Win32"\r
- OutputDirectory="x86\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="x86\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- CharacterSet="2"\r
- WholeProgramOptimization="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="0"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="..\..\masmx86\gvmat32.obj ..\..\masmx86\inffas32.obj"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="1"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|x64"\r
- OutputDirectory="x64\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="x64\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- WholeProgramOptimization="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ASMV;ASMINF;WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- AssemblerListingLocation="$(IntDir)\"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="..\..\masmx64\gvmat64.obj ..\..\masmx64\inffasx64.obj"\r
- GenerateManifest="false"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Itanium"\r
- OutputDirectory="ia64\TestZlib$(ConfigurationName)"\r
- IntermediateDirectory="ia64\TestZlib$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- CharacterSet="2"\r
- WholeProgramOptimization="1"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="2"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\.."\r
- PreprocessorDefinitions="ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;WIN64"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="5"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- </Configurations>\r
- <References>\r
- </References>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"\r
- >\r
- <File\r
- RelativePath="..\..\..\adler32.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\compress.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\crc32.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\deflate.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\masmx86\gvmat32c.c"\r
- >\r
- <FileConfiguration\r
- Name="Debug|x64"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Debug|Itanium"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="ReleaseWithoutAsm|x64"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="ReleaseWithoutAsm|Itanium"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Release|x64"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Release|Itanium"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Debug|Win64 (AMD64)"\r
- ExcludedFromBuild="TRUE"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Release|Win64 (AMD64)"\r
- ExcludedFromBuild="TRUE"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="ReleaseAsm|Win64 (AMD64)"\r
- ExcludedFromBuild="TRUE"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- </File>\r
- <File\r
- RelativePath="..\..\..\infback.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\masmx64\inffas8664.c"\r
- >\r
- <FileConfiguration\r
- Name="Debug|Win32"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Debug|Itanium"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="ReleaseWithoutAsm|Win32"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="ReleaseWithoutAsm|Itanium"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Release|Win32"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- <FileConfiguration\r
- Name="Release|Itanium"\r
- ExcludedFromBuild="true"\r
- >\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- />\r
- </FileConfiguration>\r
- </File>\r
- <File\r
- RelativePath="..\..\..\inffast.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\inflate.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\inftrees.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\testzlib\testzlib.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\trees.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\uncompr.c"\r
- >\r
- </File>\r
- <File\r
- RelativePath="..\..\..\zutil.c"\r
- >\r
- </File>\r
- </Filter>\r
- <Filter\r
- Name="Header Files"\r
- Filter="h;hpp;hxx;hm;inl;inc"\r
- >\r
- </Filter>\r
- <Filter\r
- Name="Resource Files"\r
- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"\r
- >\r
- </Filter>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-<?xml version="1.0" encoding="Windows-1252"?>\r
-<VisualStudioProject\r
- ProjectType="Visual C++"\r
- Version="8,00"\r
- Name="TestZlibDll"\r
- ProjectGUID="{C52F9E7B-498A-42BE-8DB4-85A15694366A}"\r
- Keyword="Win32Proj"\r
- SignManifests="true"\r
- >\r
- <Platforms>\r
- <Platform\r
- Name="Win32"\r
- />\r
- <Platform\r
- Name="x64"\r
- />\r
- <Platform\r
- Name="Itanium"\r
- />\r
- </Platforms>\r
- <ToolFiles>\r
- </ToolFiles>\r
- <Configurations>\r
- <Configuration\r
- Name="Debug|Win32"\r
- OutputDirectory="x86\TestZlibDll$(ConfigurationName)"\r
- IntermediateDirectory="x86\TestZlibDll$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE"\r
- MinimalRebuild="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="1"\r
- BufferSecurityCheck="false"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="4"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="x86\ZlibDllDebug\zlibwapi.lib"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="2"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- ProgramDatabaseFile="$(OutDir)/testzlib.pdb"\r
- SubSystem="1"\r
- TargetMachine="1"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Debug|x64"\r
- OutputDirectory="x64\TestZlibDll$(ConfigurationName)"\r
- IntermediateDirectory="x64\TestZlibDll$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="3"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"\r
- MinimalRebuild="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="3"\r
- BufferSecurityCheck="false"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="x64\ZlibDllDebug\zlibwapi.lib"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="2"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- ProgramDatabaseFile="$(OutDir)/testzlib.pdb"\r
- SubSystem="1"\r
- TargetMachine="17"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Debug|Itanium"\r
- OutputDirectory="ia64\TestZlibDll$(ConfigurationName)"\r
- IntermediateDirectory="ia64\TestZlibDll$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="2"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="0"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"\r
- MinimalRebuild="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="3"\r
- BufferSecurityCheck="false"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="ia64\ZlibDllDebug\zlibwapi.lib"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="2"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- ProgramDatabaseFile="$(OutDir)/testzlib.pdb"\r
- SubSystem="1"\r
- TargetMachine="5"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Win32"\r
- OutputDirectory="x86\TestZlibDll$(ConfigurationName)"\r
- IntermediateDirectory="x86\TestZlibDll$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="0"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="x86\ZlibDllRelease\zlibwapi.lib"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="1"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|x64"\r
- OutputDirectory="x64\TestZlibDll$(ConfigurationName)"\r
- IntermediateDirectory="x64\TestZlibDll$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="3"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="x64\ZlibDllRelease\zlibwapi.lib"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="17"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- <Configuration\r
- Name="Release|Itanium"\r
- OutputDirectory="ia64\TestZlibDll$(ConfigurationName)"\r
- IntermediateDirectory="ia64\TestZlibDll$(ConfigurationName)\Tmp"\r
- ConfigurationType="1"\r
- InheritedPropertySheets="UpgradeFromVC70.vsprops"\r
- CharacterSet="2"\r
- >\r
- <Tool\r
- Name="VCPreBuildEventTool"\r
- />\r
- <Tool\r
- Name="VCCustomBuildTool"\r
- />\r
- <Tool\r
- Name="VCXMLDataGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCWebServiceProxyGeneratorTool"\r
- />\r
- <Tool\r
- Name="VCMIDLTool"\r
- TargetEnvironment="2"\r
- />\r
- <Tool\r
- Name="VCCLCompilerTool"\r
- Optimization="2"\r
- InlineFunctionExpansion="1"\r
- OmitFramePointers="true"\r
- AdditionalIncludeDirectories="..\..\..;..\..\minizip"\r
- PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"\r
- StringPooling="true"\r
- BasicRuntimeChecks="0"\r
- RuntimeLibrary="2"\r
- BufferSecurityCheck="false"\r
- EnableFunctionLevelLinking="true"\r
- UsePrecompiledHeader="0"\r
- AssemblerListingLocation="$(IntDir)\"\r
- WarningLevel="3"\r
- Detect64BitPortabilityProblems="true"\r
- DebugInformationFormat="3"\r
- />\r
- <Tool\r
- Name="VCManagedResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCResourceCompilerTool"\r
- />\r
- <Tool\r
- Name="VCPreLinkEventTool"\r
- />\r
- <Tool\r
- Name="VCLinkerTool"\r
- AdditionalDependencies="ia64\ZlibDllRelease\zlibwapi.lib"\r
- OutputFile="$(OutDir)/testzlib.exe"\r
- LinkIncremental="1"\r
- GenerateManifest="false"\r
- GenerateDebugInformation="true"\r
- SubSystem="1"\r
- OptimizeReferences="2"\r
- EnableCOMDATFolding="2"\r
- OptimizeForWindows98="1"\r
- TargetMachine="5"\r
- />\r
- <Tool\r
- Name="VCALinkTool"\r
- />\r
- <Tool\r
- Name="VCManifestTool"\r
- />\r
- <Tool\r
- Name="VCXDCMakeTool"\r
- />\r
- <Tool\r
- Name="VCBscMakeTool"\r
- />\r
- <Tool\r
- Name="VCFxCopTool"\r
- />\r
- <Tool\r
- Name="VCAppVerifierTool"\r
- />\r
- <Tool\r
- Name="VCWebDeploymentTool"\r
- />\r
- <Tool\r
- Name="VCPostBuildEventTool"\r
- />\r
- </Configuration>\r
- </Configurations>\r
- <References>\r
- </References>\r
- <Files>\r
- <Filter\r
- Name="Source Files"\r
- Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm"\r
- >\r
- <File\r
- RelativePath="..\..\testzlib\testzlib.c"\r
- >\r
- </File>\r
- </Filter>\r
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- Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"\r
- >\r
- </Filter>\r
- </Files>\r
- <Globals>\r
- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-#include <windows.h>\r
-\r
-#define IDR_VERSION1 1\r
-IDR_VERSION1 VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE\r
- FILEVERSION 1,2,3,0\r
- PRODUCTVERSION 1,2,3,0\r
- FILEFLAGSMASK VS_FFI_FILEFLAGSMASK\r
- FILEFLAGS 0\r
- FILEOS VOS_DOS_WINDOWS32\r
- FILETYPE VFT_DLL\r
- FILESUBTYPE 0 // not used\r
-BEGIN\r
- BLOCK "StringFileInfo"\r
- BEGIN\r
- BLOCK "040904E4"\r
- //language ID = U.S. English, char set = Windows, Multilingual\r
-\r
- BEGIN\r
- VALUE "FileDescription", "zlib data compression library\0"\r
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- VALUE "InternalName", "zlib\0"\r
- VALUE "OriginalFilename", "zlib.dll\0"\r
- VALUE "ProductName", "ZLib.DLL\0"\r
- VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"\r
- VALUE "LegalCopyright", "(C) 1995-2003 Jean-loup Gailly & Mark Adler\0"\r
- END\r
- END\r
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- BEGIN\r
- VALUE "Translation", 0x0409, 1252\r
- END\r
-END\r
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- ProjectType="Visual C++"\r
- Version="8,00"\r
- Name="zlibstat"\r
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- />\r
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+++ /dev/null
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- </Globals>\r
-</VisualStudioProject>\r
+++ /dev/null
-/* crc32.c -- compute the CRC-32 of a data stream
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster
- * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing
- * tables for updating the shift register in one step with three exclusive-ors
- * instead of four steps with four exclusive-ors. This results in about a
- * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h" /* for STDC and FAR definitions */
-
-/*
- Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
- protection on the static variables used to control the first-use generation
- of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
- first call get_crc_table() to initialize the tables before allowing more than
- one thread to use crc32().
- */
-
-#ifdef MAKECRCH
-# include <stdio.h>
-# ifndef DYNAMIC_CRC_TABLE
-# define DYNAMIC_CRC_TABLE
-# endif /* !DYNAMIC_CRC_TABLE */
-#endif /* MAKECRCH */
-
-#define local static
-
-/* Find a four-byte integer type for crc32_little() and crc32_big(). */
-#ifndef NOBYFOUR
-# ifdef STDC /* need ANSI C limits.h to determine sizes */
-# include <limits.h>
-# define BYFOUR
-# if (UINT_MAX == 0xffffffffUL)
- typedef unsigned int u4;
-# else
-# if (ULONG_MAX == 0xffffffffUL)
- typedef unsigned long u4;
-# else
-# if (USHRT_MAX == 0xffffffffUL)
- typedef unsigned short u4;
-# else
-# undef BYFOUR /* can't find a four-byte integer type! */
-# endif
-# endif
-# endif
-# endif /* STDC */
-#endif /* !NOBYFOUR */
-
-/* Definitions for doing the crc four data bytes at a time. */
-#ifdef BYFOUR
-# define REV(w) (((w)>>24)+(((w)>>8)&0xff00)+ \
- (((w)&0xff00)<<8)+(((w)&0xff)<<24))
- local unsigned long crc32_little OF((unsigned long,
- const unsigned char FAR *, unsigned));
- local unsigned long crc32_big OF((unsigned long,
- const unsigned char FAR *, unsigned));
-# define TBLS 8
-#else
-# define TBLS 1
-#endif /* BYFOUR */
-
-/* Local functions for crc concatenation */
-local unsigned long gf2_matrix_times OF((unsigned long *mat,
- unsigned long vec));
-local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
-
-#ifdef DYNAMIC_CRC_TABLE
-
-local volatile int crc_table_empty = 1;
-local unsigned long FAR crc_table[TBLS][256];
-local void make_crc_table OF((void));
-#ifdef MAKECRCH
- local void write_table OF((FILE *, const unsigned long FAR *));
-#endif /* MAKECRCH */
-/*
- Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
- x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
-
- Polynomials over GF(2) are represented in binary, one bit per coefficient,
- with the lowest powers in the most significant bit. Then adding polynomials
- is just exclusive-or, and multiplying a polynomial by x is a right shift by
- one. If we call the above polynomial p, and represent a byte as the
- polynomial q, also with the lowest power in the most significant bit (so the
- byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p,
- where a mod b means the remainder after dividing a by b.
-
- This calculation is done using the shift-register method of multiplying and
- taking the remainder. The register is initialized to zero, and for each
- incoming bit, x^32 is added mod p to the register if the bit is a one (where
- x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by
- x (which is shifting right by one and adding x^32 mod p if the bit shifted
- out is a one). We start with the highest power (least significant bit) of
- q and repeat for all eight bits of q.
-
- The first table is simply the CRC of all possible eight bit values. This is
- all the information needed to generate CRCs on data a byte at a time for all
- combinations of CRC register values and incoming bytes. The remaining tables
- allow for word-at-a-time CRC calculation for both big-endian and little-
- endian machines, where a word is four bytes.
-*/
-local void make_crc_table()
-{
- unsigned long c;
- int n, k;
- unsigned long poly; /* polynomial exclusive-or pattern */
- /* terms of polynomial defining this crc (except x^32): */
- static volatile int first = 1; /* flag to limit concurrent making */
- static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};
-
- /* See if another task is already doing this (not thread-safe, but better
- than nothing -- significantly reduces duration of vulnerability in
- case the advice about DYNAMIC_CRC_TABLE is ignored) */
- if (first) {
- first = 0;
-
- /* make exclusive-or pattern from polynomial (0xedb88320UL) */
- poly = 0UL;
- for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)
- poly |= 1UL << (31 - p[n]);
-
- /* generate a crc for every 8-bit value */
- for (n = 0; n < 256; n++) {
- c = (unsigned long)n;
- for (k = 0; k < 8; k++)
- c = c & 1 ? poly ^ (c >> 1) : c >> 1;
- crc_table[0][n] = c;
- }
-
-#ifdef BYFOUR
- /* generate crc for each value followed by one, two, and three zeros,
- and then the byte reversal of those as well as the first table */
- for (n = 0; n < 256; n++) {
- c = crc_table[0][n];
- crc_table[4][n] = REV(c);
- for (k = 1; k < 4; k++) {
- c = crc_table[0][c & 0xff] ^ (c >> 8);
- crc_table[k][n] = c;
- crc_table[k + 4][n] = REV(c);
- }
- }
-#endif /* BYFOUR */
-
- crc_table_empty = 0;
- }
- else { /* not first */
- /* wait for the other guy to finish (not efficient, but rare) */
- while (crc_table_empty)
- ;
- }
-
-#ifdef MAKECRCH
- /* write out CRC tables to crc32.h */
- {
- FILE *out;
-
- out = fopen("crc32.h", "w");
- if (out == NULL) return;
- fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");
- fprintf(out, " * Generated automatically by crc32.c\n */\n\n");
- fprintf(out, "local const unsigned long FAR ");
- fprintf(out, "crc_table[TBLS][256] =\n{\n {\n");
- write_table(out, crc_table[0]);
-# ifdef BYFOUR
- fprintf(out, "#ifdef BYFOUR\n");
- for (k = 1; k < 8; k++) {
- fprintf(out, " },\n {\n");
- write_table(out, crc_table[k]);
- }
- fprintf(out, "#endif\n");
-# endif /* BYFOUR */
- fprintf(out, " }\n};\n");
- fclose(out);
- }
-#endif /* MAKECRCH */
-}
-
-#ifdef MAKECRCH
-local void write_table(out, table)
- FILE *out;
- const unsigned long FAR *table;
-{
- int n;
-
- for (n = 0; n < 256; n++)
- fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", table[n],
- n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));
-}
-#endif /* MAKECRCH */
-
-#else /* !DYNAMIC_CRC_TABLE */
-/* ========================================================================
- * Tables of CRC-32s of all single-byte values, made by make_crc_table().
- */
-#include "crc32.h"
-#endif /* DYNAMIC_CRC_TABLE */
-
-/* =========================================================================
- * This function can be used by asm versions of crc32()
- */
-const unsigned long FAR * ZEXPORT get_crc_table()
-{
-#ifdef DYNAMIC_CRC_TABLE
- if (crc_table_empty)
- make_crc_table();
-#endif /* DYNAMIC_CRC_TABLE */
- return (const unsigned long FAR *)crc_table;
-}
-
-/* ========================================================================= */
-#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8)
-#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1
-
-/* ========================================================================= */
-unsigned long ZEXPORT crc32(crc, buf, len)
- unsigned long crc;
- const unsigned char FAR *buf;
- unsigned len;
-{
- if (buf == Z_NULL) return 0UL;
-
-#ifdef DYNAMIC_CRC_TABLE
- if (crc_table_empty)
- make_crc_table();
-#endif /* DYNAMIC_CRC_TABLE */
-
-#ifdef BYFOUR
- if (sizeof(void *) == sizeof(ptrdiff_t)) {
- u4 endian;
-
- endian = 1;
- if (*((unsigned char *)(&endian)))
- return crc32_little(crc, buf, len);
- else
- return crc32_big(crc, buf, len);
- }
-#endif /* BYFOUR */
- crc = crc ^ 0xffffffffUL;
- while (len >= 8) {
- DO8;
- len -= 8;
- }
- if (len) do {
- DO1;
- } while (--len);
- return crc ^ 0xffffffffUL;
-}
-
-#ifdef BYFOUR
-
-/* ========================================================================= */
-#define DOLIT4 c ^= *buf4++; \
- c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \
- crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24]
-#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4
-
-/* ========================================================================= */
-local unsigned long crc32_little(crc, buf, len)
- unsigned long crc;
- const unsigned char FAR *buf;
- unsigned len;
-{
- register u4 c;
- register const u4 FAR *buf4;
-
- c = (u4)crc;
- c = ~c;
- while (len && ((ptrdiff_t)buf & 3)) {
- c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
- len--;
- }
-
- buf4 = (const u4 FAR *)(const void FAR *)buf;
- while (len >= 32) {
- DOLIT32;
- len -= 32;
- }
- while (len >= 4) {
- DOLIT4;
- len -= 4;
- }
- buf = (const unsigned char FAR *)buf4;
-
- if (len) do {
- c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
- } while (--len);
- c = ~c;
- return (unsigned long)c;
-}
-
-/* ========================================================================= */
-#define DOBIG4 c ^= *++buf4; \
- c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \
- crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24]
-#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4
-
-/* ========================================================================= */
-local unsigned long crc32_big(crc, buf, len)
- unsigned long crc;
- const unsigned char FAR *buf;
- unsigned len;
-{
- register u4 c;
- register const u4 FAR *buf4;
-
- c = REV((u4)crc);
- c = ~c;
- while (len && ((ptrdiff_t)buf & 3)) {
- c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
- len--;
- }
-
- buf4 = (const u4 FAR *)(const void FAR *)buf;
- buf4--;
- while (len >= 32) {
- DOBIG32;
- len -= 32;
- }
- while (len >= 4) {
- DOBIG4;
- len -= 4;
- }
- buf4++;
- buf = (const unsigned char FAR *)buf4;
-
- if (len) do {
- c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
- } while (--len);
- c = ~c;
- return (unsigned long)(REV(c));
-}
-
-#endif /* BYFOUR */
-
-#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */
-
-/* ========================================================================= */
-local unsigned long gf2_matrix_times(mat, vec)
- unsigned long *mat;
- unsigned long vec;
-{
- unsigned long sum;
-
- sum = 0;
- while (vec) {
- if (vec & 1)
- sum ^= *mat;
- vec >>= 1;
- mat++;
- }
- return sum;
-}
-
-/* ========================================================================= */
-local void gf2_matrix_square(square, mat)
- unsigned long *square;
- unsigned long *mat;
-{
- int n;
-
- for (n = 0; n < GF2_DIM; n++)
- square[n] = gf2_matrix_times(mat, mat[n]);
-}
-
-/* ========================================================================= */
-uLong ZEXPORT crc32_combine(crc1, crc2, len2)
- uLong crc1;
- uLong crc2;
- z_off_t len2;
-{
- int n;
- unsigned long row;
- unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
- unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
-
- /* degenerate case */
- if (len2 == 0)
- return crc1;
-
- /* put operator for one zero bit in odd */
- odd[0] = 0xedb88320L; /* CRC-32 polynomial */
- row = 1;
- for (n = 1; n < GF2_DIM; n++) {
- odd[n] = row;
- row <<= 1;
- }
-
- /* put operator for two zero bits in even */
- gf2_matrix_square(even, odd);
-
- /* put operator for four zero bits in odd */
- gf2_matrix_square(odd, even);
-
- /* apply len2 zeros to crc1 (first square will put the operator for one
- zero byte, eight zero bits, in even) */
- do {
- /* apply zeros operator for this bit of len2 */
- gf2_matrix_square(even, odd);
- if (len2 & 1)
- crc1 = gf2_matrix_times(even, crc1);
- len2 >>= 1;
-
- /* if no more bits set, then done */
- if (len2 == 0)
- break;
-
- /* another iteration of the loop with odd and even swapped */
- gf2_matrix_square(odd, even);
- if (len2 & 1)
- crc1 = gf2_matrix_times(odd, crc1);
- len2 >>= 1;
-
- /* if no more bits set, then done */
- } while (len2 != 0);
-
- /* return combined crc */
- crc1 ^= crc2;
- return crc1;
-}
+++ /dev/null
-/* crc32.h -- tables for rapid CRC calculation
- * Generated automatically by crc32.c
- */
-
-local const unsigned long FAR crc_table[TBLS][256] =
-{
- {
- 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
- 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
- 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
- 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
- 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
- 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
- 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
- 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
- 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
- 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
- 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
- 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
- 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
- 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
- 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
- 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
- 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
- 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
- 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
- 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
- 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
- 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
- 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
- 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
- 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
- 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
- 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
- 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
- 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
- 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
- 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
- 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
- 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
- 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
- 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
- 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
- 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
- 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
- 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
- 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
- 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
- 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
- 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
- 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
- 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
- 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
- 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
- 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
- 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
- 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
- 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
- 0x2d02ef8dUL
-#ifdef BYFOUR
- },
- {
- 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,
- 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,
- 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,
- 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,
- 0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,
- 0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,
- 0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,
- 0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,
- 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,
- 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,
- 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,
- 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,
- 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,
- 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,
- 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,
- 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,
- 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,
- 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,
- 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,
- 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,
- 0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,
- 0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,
- 0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,
- 0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,
- 0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,
- 0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,
- 0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,
- 0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,
- 0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,
- 0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,
- 0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,
- 0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,
- 0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL,
- 0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,
- 0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,
- 0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,
- 0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,
- 0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,
- 0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,
- 0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,
- 0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,
- 0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,
- 0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,
- 0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,
- 0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,
- 0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,
- 0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,
- 0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,
- 0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,
- 0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,
- 0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,
- 0x9324fd72UL
- },
- {
- 0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,
- 0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,
- 0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,
- 0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,
- 0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,
- 0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,
- 0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,
- 0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,
- 0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,
- 0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,
- 0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,
- 0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,
- 0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,
- 0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,
- 0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,
- 0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,
- 0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,
- 0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,
- 0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,
- 0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,
- 0x4fde63fcUL, 0x4e1c09cbUL, 0x4c5ab792UL, 0x4d98dda5UL, 0x46c49a98UL,
- 0x4706f0afUL, 0x45404ef6UL, 0x448224c1UL, 0x41cd3244UL, 0x400f5873UL,
- 0x4249e62aUL, 0x438b8c1dUL, 0x54f16850UL, 0x55330267UL, 0x5775bc3eUL,
- 0x56b7d609UL, 0x53f8c08cUL, 0x523aaabbUL, 0x507c14e2UL, 0x51be7ed5UL,
- 0x5ae239e8UL, 0x5b2053dfUL, 0x5966ed86UL, 0x58a487b1UL, 0x5deb9134UL,
- 0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,
- 0xe2b1cfeeUL, 0xe373a5d9UL, 0xe63cb35cUL, 0xe7fed96bUL, 0xe5b86732UL,
- 0xe47a0d05UL, 0xef264a38UL, 0xeee4200fUL, 0xeca29e56UL, 0xed60f461UL,
- 0xe82fe2e4UL, 0xe9ed88d3UL, 0xebab368aUL, 0xea695cbdUL, 0xfd13b8f0UL,
- 0xfcd1d2c7UL, 0xfe976c9eUL, 0xff5506a9UL, 0xfa1a102cUL, 0xfbd87a1bUL,
- 0xf99ec442UL, 0xf85cae75UL, 0xf300e948UL, 0xf2c2837fUL, 0xf0843d26UL,
- 0xf1465711UL, 0xf4094194UL, 0xf5cb2ba3UL, 0xf78d95faUL, 0xf64fffcdUL,
- 0xd9785d60UL, 0xd8ba3757UL, 0xdafc890eUL, 0xdb3ee339UL, 0xde71f5bcUL,
- 0xdfb39f8bUL, 0xddf521d2UL, 0xdc374be5UL, 0xd76b0cd8UL, 0xd6a966efUL,
- 0xd4efd8b6UL, 0xd52db281UL, 0xd062a404UL, 0xd1a0ce33UL, 0xd3e6706aUL,
- 0xd2241a5dUL, 0xc55efe10UL, 0xc49c9427UL, 0xc6da2a7eUL, 0xc7184049UL,
- 0xc25756ccUL, 0xc3953cfbUL, 0xc1d382a2UL, 0xc011e895UL, 0xcb4dafa8UL,
- 0xca8fc59fUL, 0xc8c97bc6UL, 0xc90b11f1UL, 0xcc440774UL, 0xcd866d43UL,
- 0xcfc0d31aUL, 0xce02b92dUL, 0x91af9640UL, 0x906dfc77UL, 0x922b422eUL,
- 0x93e92819UL, 0x96a63e9cUL, 0x976454abUL, 0x9522eaf2UL, 0x94e080c5UL,
- 0x9fbcc7f8UL, 0x9e7eadcfUL, 0x9c381396UL, 0x9dfa79a1UL, 0x98b56f24UL,
- 0x99770513UL, 0x9b31bb4aUL, 0x9af3d17dUL, 0x8d893530UL, 0x8c4b5f07UL,
- 0x8e0de15eUL, 0x8fcf8b69UL, 0x8a809decUL, 0x8b42f7dbUL, 0x89044982UL,
- 0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,
- 0x8493cc54UL, 0x8551a663UL, 0x8717183aUL, 0x86d5720dUL, 0xa9e2d0a0UL,
- 0xa820ba97UL, 0xaa6604ceUL, 0xaba46ef9UL, 0xaeeb787cUL, 0xaf29124bUL,
- 0xad6fac12UL, 0xacadc625UL, 0xa7f18118UL, 0xa633eb2fUL, 0xa4755576UL,
- 0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,
- 0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,
- 0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,
- 0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,
- 0xbe9834edUL
- },
- {
- 0x00000000UL, 0xb8bc6765UL, 0xaa09c88bUL, 0x12b5afeeUL, 0x8f629757UL,
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- 0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,
- 0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,
- 0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,
- 0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,
- 0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,
- 0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,
- 0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,
- 0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,
- 0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,
- 0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,
- 0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,
- 0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,
- 0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,
- 0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,
- 0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,
- 0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,
- 0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,
- 0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,
- 0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,
- 0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,
- 0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,
- 0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,
- 0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,
- 0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,
- 0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,
- 0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,
- 0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,
- 0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,
- 0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,
- 0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,
- 0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,
- 0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,
- 0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,
- 0xed3498beUL
- },
- {
- 0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,
- 0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,
- 0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,
- 0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,
- 0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,
- 0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,
- 0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,
- 0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,
- 0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,
- 0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,
- 0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,
- 0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,
- 0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,
- 0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,
- 0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,
- 0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,
- 0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,
- 0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,
- 0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,
- 0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,
- 0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,
- 0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,
- 0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,
- 0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,
- 0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,
- 0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,
- 0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,
- 0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,
- 0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,
- 0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,
- 0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,
- 0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,
- 0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,
- 0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,
- 0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,
- 0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,
- 0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,
- 0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,
- 0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,
- 0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,
- 0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,
- 0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,
- 0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,
- 0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,
- 0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,
- 0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,
- 0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,
- 0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,
- 0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,
- 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,
- 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,
- 0xf10605deUL
-#endif
- }
-};
+++ /dev/null
-/* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * ALGORITHM
- *
- * The "deflation" process depends on being able to identify portions
- * of the input text which are identical to earlier input (within a
- * sliding window trailing behind the input currently being processed).
- *
- * The most straightforward technique turns out to be the fastest for
- * most input files: try all possible matches and select the longest.
- * The key feature of this algorithm is that insertions into the string
- * dictionary are very simple and thus fast, and deletions are avoided
- * completely. Insertions are performed at each input character, whereas
- * string matches are performed only when the previous match ends. So it
- * is preferable to spend more time in matches to allow very fast string
- * insertions and avoid deletions. The matching algorithm for small
- * strings is inspired from that of Rabin & Karp. A brute force approach
- * is used to find longer strings when a small match has been found.
- * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
- * (by Leonid Broukhis).
- * A previous version of this file used a more sophisticated algorithm
- * (by Fiala and Greene) which is guaranteed to run in linear amortized
- * time, but has a larger average cost, uses more memory and is patented.
- * However the F&G algorithm may be faster for some highly redundant
- * files if the parameter max_chain_length (described below) is too large.
- *
- * ACKNOWLEDGEMENTS
- *
- * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
- * I found it in 'freeze' written by Leonid Broukhis.
- * Thanks to many people for bug reports and testing.
- *
- * REFERENCES
- *
- * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
- * Available in http://www.ietf.org/rfc/rfc1951.txt
- *
- * A description of the Rabin and Karp algorithm is given in the book
- * "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
- *
- * Fiala,E.R., and Greene,D.H.
- * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
- *
- */
-
-/* @(#) $Id$ */
-
-#include "deflate.h"
-
-const char deflate_copyright[] =
- " deflate 1.2.3 Copyright 1995-2005 Jean-loup Gailly ";
-/*
- If you use the zlib library in a product, an acknowledgment is welcome
- in the documentation of your product. If for some reason you cannot
- include such an acknowledgment, I would appreciate that you keep this
- copyright string in the executable of your product.
- */
-
-/* ===========================================================================
- * Function prototypes.
- */
-typedef enum {
- need_more, /* block not completed, need more input or more output */
- block_done, /* block flush performed */
- finish_started, /* finish started, need only more output at next deflate */
- finish_done /* finish done, accept no more input or output */
-} block_state;
-
-typedef block_state (*compress_func) OF((deflate_state *s, int flush));
-/* Compression function. Returns the block state after the call. */
-
-local void fill_window OF((deflate_state *s));
-local block_state deflate_stored OF((deflate_state *s, int flush));
-local block_state deflate_fast OF((deflate_state *s, int flush));
-#ifndef FASTEST
-local block_state deflate_slow OF((deflate_state *s, int flush));
-#endif
-local void lm_init OF((deflate_state *s));
-local void putShortMSB OF((deflate_state *s, uInt b));
-local void flush_pending OF((z_streamp strm));
-local int read_buf OF((z_streamp strm, Bytef *buf, unsigned size));
-#ifndef FASTEST
-#ifdef ASMV
- void match_init OF((void)); /* asm code initialization */
- uInt longest_match OF((deflate_state *s, IPos cur_match));
-#else
-local uInt longest_match OF((deflate_state *s, IPos cur_match));
-#endif
-#endif
-local uInt longest_match_fast OF((deflate_state *s, IPos cur_match));
-
-#ifdef DEBUG
-local void check_match OF((deflate_state *s, IPos start, IPos match,
- int length));
-#endif
-
-/* ===========================================================================
- * Local data
- */
-
-#define NIL 0
-/* Tail of hash chains */
-
-#ifndef TOO_FAR
-# define TOO_FAR 4096
-#endif
-/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
-
-#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
-/* Minimum amount of lookahead, except at the end of the input file.
- * See deflate.c for comments about the MIN_MATCH+1.
- */
-
-/* Values for max_lazy_match, good_match and max_chain_length, depending on
- * the desired pack level (0..9). The values given below have been tuned to
- * exclude worst case performance for pathological files. Better values may be
- * found for specific files.
- */
-typedef struct config_s {
- ush good_length; /* reduce lazy search above this match length */
- ush max_lazy; /* do not perform lazy search above this match length */
- ush nice_length; /* quit search above this match length */
- ush max_chain;
- compress_func func;
-} config;
-
-#ifdef FASTEST
-local const config configuration_table[2] = {
-/* good lazy nice chain */
-/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
-/* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */
-#else
-local const config configuration_table[10] = {
-/* good lazy nice chain */
-/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
-/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */
-/* 2 */ {4, 5, 16, 8, deflate_fast},
-/* 3 */ {4, 6, 32, 32, deflate_fast},
-
-/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */
-/* 5 */ {8, 16, 32, 32, deflate_slow},
-/* 6 */ {8, 16, 128, 128, deflate_slow},
-/* 7 */ {8, 32, 128, 256, deflate_slow},
-/* 8 */ {32, 128, 258, 1024, deflate_slow},
-/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */
-#endif
-
-/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
- * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
- * meaning.
- */
-
-#ifndef NO_DUMMY_DECL
-struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
-#endif
-
-/* ===========================================================================
- * Update a hash value with the given input byte
- * IN assertion: all calls to to UPDATE_HASH are made with consecutive
- * input characters, so that a running hash key can be computed from the
- * previous key instead of complete recalculation each time.
- */
-#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
-
-
-/* ===========================================================================
- * Insert string str in the dictionary and set match_head to the previous head
- * of the hash chain (the most recent string with same hash key). Return
- * the previous length of the hash chain.
- * If this file is compiled with -DFASTEST, the compression level is forced
- * to 1, and no hash chains are maintained.
- * IN assertion: all calls to to INSERT_STRING are made with consecutive
- * input characters and the first MIN_MATCH bytes of str are valid
- * (except for the last MIN_MATCH-1 bytes of the input file).
- */
-#ifdef FASTEST
-#define INSERT_STRING(s, str, match_head) \
- (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
- match_head = s->head[s->ins_h], \
- s->head[s->ins_h] = (Pos)(str))
-#else
-#define INSERT_STRING(s, str, match_head) \
- (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
- match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \
- s->head[s->ins_h] = (Pos)(str))
-#endif
-
-/* ===========================================================================
- * Initialize the hash table (avoiding 64K overflow for 16 bit systems).
- * prev[] will be initialized on the fly.
- */
-#define CLEAR_HASH(s) \
- s->head[s->hash_size-1] = NIL; \
- zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
-
-/* ========================================================================= */
-int ZEXPORT deflateInit_(strm, level, version, stream_size)
- z_streamp strm;
- int level;
- const char *version;
- int stream_size;
-{
- return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
- Z_DEFAULT_STRATEGY, version, stream_size);
- /* To do: ignore strm->next_in if we use it as window */
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
- version, stream_size)
- z_streamp strm;
- int level;
- int method;
- int windowBits;
- int memLevel;
- int strategy;
- const char *version;
- int stream_size;
-{
- deflate_state *s;
- int wrap = 1;
- static const char my_version[] = ZLIB_VERSION;
-
- ushf *overlay;
- /* We overlay pending_buf and d_buf+l_buf. This works since the average
- * output size for (length,distance) codes is <= 24 bits.
- */
-
- if (version == Z_NULL || version[0] != my_version[0] ||
- stream_size != sizeof(z_stream)) {
- return Z_VERSION_ERROR;
- }
- if (strm == Z_NULL) return Z_STREAM_ERROR;
-
- strm->msg = Z_NULL;
- if (strm->zalloc == (alloc_func)0) {
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
- }
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;
-
-#ifdef FASTEST
- if (level != 0) level = 1;
-#else
- if (level == Z_DEFAULT_COMPRESSION) level = 6;
-#endif
-
- if (windowBits < 0) { /* suppress zlib wrapper */
- wrap = 0;
- windowBits = -windowBits;
- }
-#ifdef GZIP
- else if (windowBits > 15) {
- wrap = 2; /* write gzip wrapper instead */
- windowBits -= 16;
- }
-#endif
- if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
- windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
- strategy < 0 || strategy > Z_FIXED) {
- return Z_STREAM_ERROR;
- }
- if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */
- s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
- if (s == Z_NULL) return Z_MEM_ERROR;
- strm->state = (struct internal_state FAR *)s;
- s->strm = strm;
-
- s->wrap = wrap;
- s->gzhead = Z_NULL;
- s->w_bits = windowBits;
- s->w_size = 1 << s->w_bits;
- s->w_mask = s->w_size - 1;
-
- s->hash_bits = memLevel + 7;
- s->hash_size = 1 << s->hash_bits;
- s->hash_mask = s->hash_size - 1;
- s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
-
- s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
- s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos));
- s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos));
-
- s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
-
- overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
- s->pending_buf = (uchf *) overlay;
- s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L);
-
- if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
- s->pending_buf == Z_NULL) {
- s->status = FINISH_STATE;
- strm->msg = ERR_MSG(Z_MEM_ERROR);
- deflateEnd (strm);
- return Z_MEM_ERROR;
- }
- s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
- s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
-
- s->level = level;
- s->strategy = strategy;
- s->method = (Byte)method;
-
- return deflateReset(strm);
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
- z_streamp strm;
- const Bytef *dictionary;
- uInt dictLength;
-{
- deflate_state *s;
- uInt length = dictLength;
- uInt n;
- IPos hash_head = 0;
-
- if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL ||
- strm->state->wrap == 2 ||
- (strm->state->wrap == 1 && strm->state->status != INIT_STATE))
- return Z_STREAM_ERROR;
-
- s = strm->state;
- if (s->wrap)
- strm->adler = adler32(strm->adler, dictionary, dictLength);
-
- if (length < MIN_MATCH) return Z_OK;
- if (length > MAX_DIST(s)) {
- length = MAX_DIST(s);
- dictionary += dictLength - length; /* use the tail of the dictionary */
- }
- zmemcpy(s->window, dictionary, length);
- s->strstart = length;
- s->block_start = (long)length;
-
- /* Insert all strings in the hash table (except for the last two bytes).
- * s->lookahead stays null, so s->ins_h will be recomputed at the next
- * call of fill_window.
- */
- s->ins_h = s->window[0];
- UPDATE_HASH(s, s->ins_h, s->window[1]);
- for (n = 0; n <= length - MIN_MATCH; n++) {
- INSERT_STRING(s, n, hash_head);
- }
- if (hash_head) hash_head = 0; /* to make compiler happy */
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateReset (strm)
- z_streamp strm;
-{
- deflate_state *s;
-
- if (strm == Z_NULL || strm->state == Z_NULL ||
- strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) {
- return Z_STREAM_ERROR;
- }
-
- strm->total_in = strm->total_out = 0;
- strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
- strm->data_type = Z_UNKNOWN;
-
- s = (deflate_state *)strm->state;
- s->pending = 0;
- s->pending_out = s->pending_buf;
-
- if (s->wrap < 0) {
- s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
- }
- s->status = s->wrap ? INIT_STATE : BUSY_STATE;
- strm->adler =
-#ifdef GZIP
- s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
-#endif
- adler32(0L, Z_NULL, 0);
- s->last_flush = Z_NO_FLUSH;
-
- _tr_init(s);
- lm_init(s);
-
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateSetHeader (strm, head)
- z_streamp strm;
- gz_headerp head;
-{
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- if (strm->state->wrap != 2) return Z_STREAM_ERROR;
- strm->state->gzhead = head;
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflatePrime (strm, bits, value)
- z_streamp strm;
- int bits;
- int value;
-{
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- strm->state->bi_valid = bits;
- strm->state->bi_buf = (ush)(value & ((1 << bits) - 1));
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateParams(strm, level, strategy)
- z_streamp strm;
- int level;
- int strategy;
-{
- deflate_state *s;
- compress_func func;
- int err = Z_OK;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- s = strm->state;
-
-#ifdef FASTEST
- if (level != 0) level = 1;
-#else
- if (level == Z_DEFAULT_COMPRESSION) level = 6;
-#endif
- if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) {
- return Z_STREAM_ERROR;
- }
- func = configuration_table[s->level].func;
-
- if (func != configuration_table[level].func && strm->total_in != 0) {
- /* Flush the last buffer: */
- err = deflate(strm, Z_PARTIAL_FLUSH);
- }
- if (s->level != level) {
- s->level = level;
- s->max_lazy_match = configuration_table[level].max_lazy;
- s->good_match = configuration_table[level].good_length;
- s->nice_match = configuration_table[level].nice_length;
- s->max_chain_length = configuration_table[level].max_chain;
- }
- s->strategy = strategy;
- return err;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)
- z_streamp strm;
- int good_length;
- int max_lazy;
- int nice_length;
- int max_chain;
-{
- deflate_state *s;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- s = strm->state;
- s->good_match = good_length;
- s->max_lazy_match = max_lazy;
- s->nice_match = nice_length;
- s->max_chain_length = max_chain;
- return Z_OK;
-}
-
-/* =========================================================================
- * For the default windowBits of 15 and memLevel of 8, this function returns
- * a close to exact, as well as small, upper bound on the compressed size.
- * They are coded as constants here for a reason--if the #define's are
- * changed, then this function needs to be changed as well. The return
- * value for 15 and 8 only works for those exact settings.
- *
- * For any setting other than those defaults for windowBits and memLevel,
- * the value returned is a conservative worst case for the maximum expansion
- * resulting from using fixed blocks instead of stored blocks, which deflate
- * can emit on compressed data for some combinations of the parameters.
- *
- * This function could be more sophisticated to provide closer upper bounds
- * for every combination of windowBits and memLevel, as well as wrap.
- * But even the conservative upper bound of about 14% expansion does not
- * seem onerous for output buffer allocation.
- */
-uLong ZEXPORT deflateBound(strm, sourceLen)
- z_streamp strm;
- uLong sourceLen;
-{
- deflate_state *s;
- uLong destLen;
-
- /* conservative upper bound */
- destLen = sourceLen +
- ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 11;
-
- /* if can't get parameters, return conservative bound */
- if (strm == Z_NULL || strm->state == Z_NULL)
- return destLen;
-
- /* if not default parameters, return conservative bound */
- s = strm->state;
- if (s->w_bits != 15 || s->hash_bits != 8 + 7)
- return destLen;
-
- /* default settings: return tight bound for that case */
- return compressBound(sourceLen);
-}
-
-/* =========================================================================
- * Put a short in the pending buffer. The 16-bit value is put in MSB order.
- * IN assertion: the stream state is correct and there is enough room in
- * pending_buf.
- */
-local void putShortMSB (s, b)
- deflate_state *s;
- uInt b;
-{
- put_byte(s, (Byte)(b >> 8));
- put_byte(s, (Byte)(b & 0xff));
-}
-
-/* =========================================================================
- * Flush as much pending output as possible. All deflate() output goes
- * through this function so some applications may wish to modify it
- * to avoid allocating a large strm->next_out buffer and copying into it.
- * (See also read_buf()).
- */
-local void flush_pending(strm)
- z_streamp strm;
-{
- unsigned len = strm->state->pending;
-
- if (len > strm->avail_out) len = strm->avail_out;
- if (len == 0) return;
-
- zmemcpy(strm->next_out, strm->state->pending_out, len);
- strm->next_out += len;
- strm->state->pending_out += len;
- strm->total_out += len;
- strm->avail_out -= len;
- strm->state->pending -= len;
- if (strm->state->pending == 0) {
- strm->state->pending_out = strm->state->pending_buf;
- }
-}
-
-/* ========================================================================= */
-int ZEXPORT deflate (strm, flush)
- z_streamp strm;
- int flush;
-{
- int old_flush; /* value of flush param for previous deflate call */
- deflate_state *s;
-
- if (strm == Z_NULL || strm->state == Z_NULL ||
- flush > Z_FINISH || flush < 0) {
- return Z_STREAM_ERROR;
- }
- s = strm->state;
-
- if (strm->next_out == Z_NULL ||
- (strm->next_in == Z_NULL && strm->avail_in != 0) ||
- (s->status == FINISH_STATE && flush != Z_FINISH)) {
- ERR_RETURN(strm, Z_STREAM_ERROR);
- }
- if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
-
- s->strm = strm; /* just in case */
- old_flush = s->last_flush;
- s->last_flush = flush;
-
- /* Write the header */
- if (s->status == INIT_STATE) {
-#ifdef GZIP
- if (s->wrap == 2) {
- strm->adler = crc32(0L, Z_NULL, 0);
- put_byte(s, 31);
- put_byte(s, 139);
- put_byte(s, 8);
- if (s->gzhead == NULL) {
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, s->level == 9 ? 2 :
- (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
- 4 : 0));
- put_byte(s, OS_CODE);
- s->status = BUSY_STATE;
- }
- else {
- put_byte(s, (s->gzhead->text ? 1 : 0) +
- (s->gzhead->hcrc ? 2 : 0) +
- (s->gzhead->extra == Z_NULL ? 0 : 4) +
- (s->gzhead->name == Z_NULL ? 0 : 8) +
- (s->gzhead->comment == Z_NULL ? 0 : 16)
- );
- put_byte(s, (Byte)(s->gzhead->time & 0xff));
- put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));
- put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));
- put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));
- put_byte(s, s->level == 9 ? 2 :
- (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
- 4 : 0));
- put_byte(s, s->gzhead->os & 0xff);
- if (s->gzhead->extra != NULL) {
- put_byte(s, s->gzhead->extra_len & 0xff);
- put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
- }
- if (s->gzhead->hcrc)
- strm->adler = crc32(strm->adler, s->pending_buf,
- s->pending);
- s->gzindex = 0;
- s->status = EXTRA_STATE;
- }
- }
- else
-#endif
- {
- uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
- uInt level_flags;
-
- if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
- level_flags = 0;
- else if (s->level < 6)
- level_flags = 1;
- else if (s->level == 6)
- level_flags = 2;
- else
- level_flags = 3;
- header |= (level_flags << 6);
- if (s->strstart != 0) header |= PRESET_DICT;
- header += 31 - (header % 31);
-
- s->status = BUSY_STATE;
- putShortMSB(s, header);
-
- /* Save the adler32 of the preset dictionary: */
- if (s->strstart != 0) {
- putShortMSB(s, (uInt)(strm->adler >> 16));
- putShortMSB(s, (uInt)(strm->adler & 0xffff));
- }
- strm->adler = adler32(0L, Z_NULL, 0);
- }
- }
-#ifdef GZIP
- if (s->status == EXTRA_STATE) {
- if (s->gzhead->extra != NULL) {
- uInt beg = s->pending; /* start of bytes to update crc */
-
- while (s->gzindex < (s->gzhead->extra_len & 0xffff)) {
- if (s->pending == s->pending_buf_size) {
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- flush_pending(strm);
- beg = s->pending;
- if (s->pending == s->pending_buf_size)
- break;
- }
- put_byte(s, s->gzhead->extra[s->gzindex]);
- s->gzindex++;
- }
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- if (s->gzindex == s->gzhead->extra_len) {
- s->gzindex = 0;
- s->status = NAME_STATE;
- }
- }
- else
- s->status = NAME_STATE;
- }
- if (s->status == NAME_STATE) {
- if (s->gzhead->name != NULL) {
- uInt beg = s->pending; /* start of bytes to update crc */
- int val;
-
- do {
- if (s->pending == s->pending_buf_size) {
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- flush_pending(strm);
- beg = s->pending;
- if (s->pending == s->pending_buf_size) {
- val = 1;
- break;
- }
- }
- val = s->gzhead->name[s->gzindex++];
- put_byte(s, val);
- } while (val != 0);
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- if (val == 0) {
- s->gzindex = 0;
- s->status = COMMENT_STATE;
- }
- }
- else
- s->status = COMMENT_STATE;
- }
- if (s->status == COMMENT_STATE) {
- if (s->gzhead->comment != NULL) {
- uInt beg = s->pending; /* start of bytes to update crc */
- int val;
-
- do {
- if (s->pending == s->pending_buf_size) {
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- flush_pending(strm);
- beg = s->pending;
- if (s->pending == s->pending_buf_size) {
- val = 1;
- break;
- }
- }
- val = s->gzhead->comment[s->gzindex++];
- put_byte(s, val);
- } while (val != 0);
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- if (val == 0)
- s->status = HCRC_STATE;
- }
- else
- s->status = HCRC_STATE;
- }
- if (s->status == HCRC_STATE) {
- if (s->gzhead->hcrc) {
- if (s->pending + 2 > s->pending_buf_size)
- flush_pending(strm);
- if (s->pending + 2 <= s->pending_buf_size) {
- put_byte(s, (Byte)(strm->adler & 0xff));
- put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
- strm->adler = crc32(0L, Z_NULL, 0);
- s->status = BUSY_STATE;
- }
- }
- else
- s->status = BUSY_STATE;
- }
-#endif
-
- /* Flush as much pending output as possible */
- if (s->pending != 0) {
- flush_pending(strm);
- if (strm->avail_out == 0) {
- /* Since avail_out is 0, deflate will be called again with
- * more output space, but possibly with both pending and
- * avail_in equal to zero. There won't be anything to do,
- * but this is not an error situation so make sure we
- * return OK instead of BUF_ERROR at next call of deflate:
- */
- s->last_flush = -1;
- return Z_OK;
- }
-
- /* Make sure there is something to do and avoid duplicate consecutive
- * flushes. For repeated and useless calls with Z_FINISH, we keep
- * returning Z_STREAM_END instead of Z_BUF_ERROR.
- */
- } else if (strm->avail_in == 0 && flush <= old_flush &&
- flush != Z_FINISH) {
- ERR_RETURN(strm, Z_BUF_ERROR);
- }
-
- /* User must not provide more input after the first FINISH: */
- if (s->status == FINISH_STATE && strm->avail_in != 0) {
- ERR_RETURN(strm, Z_BUF_ERROR);
- }
-
- /* Start a new block or continue the current one.
- */
- if (strm->avail_in != 0 || s->lookahead != 0 ||
- (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
- block_state bstate;
-
- bstate = (*(configuration_table[s->level].func))(s, flush);
-
- if (bstate == finish_started || bstate == finish_done) {
- s->status = FINISH_STATE;
- }
- if (bstate == need_more || bstate == finish_started) {
- if (strm->avail_out == 0) {
- s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
- }
- return Z_OK;
- /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
- * of deflate should use the same flush parameter to make sure
- * that the flush is complete. So we don't have to output an
- * empty block here, this will be done at next call. This also
- * ensures that for a very small output buffer, we emit at most
- * one empty block.
- */
- }
- if (bstate == block_done) {
- if (flush == Z_PARTIAL_FLUSH) {
- _tr_align(s);
- } else { /* FULL_FLUSH or SYNC_FLUSH */
- _tr_stored_block(s, (char*)0, 0L, 0);
- /* For a full flush, this empty block will be recognized
- * as a special marker by inflate_sync().
- */
- if (flush == Z_FULL_FLUSH) {
- CLEAR_HASH(s); /* forget history */
- }
- }
- flush_pending(strm);
- if (strm->avail_out == 0) {
- s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
- return Z_OK;
- }
- }
- }
- Assert(strm->avail_out > 0, "bug2");
-
- if (flush != Z_FINISH) return Z_OK;
- if (s->wrap <= 0) return Z_STREAM_END;
-
- /* Write the trailer */
-#ifdef GZIP
- if (s->wrap == 2) {
- put_byte(s, (Byte)(strm->adler & 0xff));
- put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
- put_byte(s, (Byte)((strm->adler >> 16) & 0xff));
- put_byte(s, (Byte)((strm->adler >> 24) & 0xff));
- put_byte(s, (Byte)(strm->total_in & 0xff));
- put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));
- put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));
- put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));
- }
- else
-#endif
- {
- putShortMSB(s, (uInt)(strm->adler >> 16));
- putShortMSB(s, (uInt)(strm->adler & 0xffff));
- }
- flush_pending(strm);
- /* If avail_out is zero, the application will call deflate again
- * to flush the rest.
- */
- if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */
- return s->pending != 0 ? Z_OK : Z_STREAM_END;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateEnd (strm)
- z_streamp strm;
-{
- int status;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
-
- status = strm->state->status;
- if (status != INIT_STATE &&
- status != EXTRA_STATE &&
- status != NAME_STATE &&
- status != COMMENT_STATE &&
- status != HCRC_STATE &&
- status != BUSY_STATE &&
- status != FINISH_STATE) {
- return Z_STREAM_ERROR;
- }
-
- /* Deallocate in reverse order of allocations: */
- TRY_FREE(strm, strm->state->pending_buf);
- TRY_FREE(strm, strm->state->head);
- TRY_FREE(strm, strm->state->prev);
- TRY_FREE(strm, strm->state->window);
-
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
-
- return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
-}
-
-/* =========================================================================
- * Copy the source state to the destination state.
- * To simplify the source, this is not supported for 16-bit MSDOS (which
- * doesn't have enough memory anyway to duplicate compression states).
- */
-int ZEXPORT deflateCopy (dest, source)
- z_streamp dest;
- z_streamp source;
-{
-#ifdef MAXSEG_64K
- return Z_STREAM_ERROR;
-#else
- deflate_state *ds;
- deflate_state *ss;
- ushf *overlay;
-
-
- if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {
- return Z_STREAM_ERROR;
- }
-
- ss = source->state;
-
- zmemcpy(dest, source, sizeof(z_stream));
-
- ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
- if (ds == Z_NULL) return Z_MEM_ERROR;
- dest->state = (struct internal_state FAR *) ds;
- zmemcpy(ds, ss, sizeof(deflate_state));
- ds->strm = dest;
-
- ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
- ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos));
- ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos));
- overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2);
- ds->pending_buf = (uchf *) overlay;
-
- if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
- ds->pending_buf == Z_NULL) {
- deflateEnd (dest);
- return Z_MEM_ERROR;
- }
- /* following zmemcpy do not work for 16-bit MSDOS */
- zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
- zmemcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos));
- zmemcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos));
- zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
-
- ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
- ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);
- ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;
-
- ds->l_desc.dyn_tree = ds->dyn_ltree;
- ds->d_desc.dyn_tree = ds->dyn_dtree;
- ds->bl_desc.dyn_tree = ds->bl_tree;
-
- return Z_OK;
-#endif /* MAXSEG_64K */
-}
-
-/* ===========================================================================
- * Read a new buffer from the current input stream, update the adler32
- * and total number of bytes read. All deflate() input goes through
- * this function so some applications may wish to modify it to avoid
- * allocating a large strm->next_in buffer and copying from it.
- * (See also flush_pending()).
- */
-local int read_buf(strm, buf, size)
- z_streamp strm;
- Bytef *buf;
- unsigned size;
-{
- unsigned len = strm->avail_in;
-
- if (len > size) len = size;
- if (len == 0) return 0;
-
- strm->avail_in -= len;
-
- if (strm->state->wrap == 1) {
- strm->adler = adler32(strm->adler, strm->next_in, len);
- }
-#ifdef GZIP
- else if (strm->state->wrap == 2) {
- strm->adler = crc32(strm->adler, strm->next_in, len);
- }
-#endif
- zmemcpy(buf, strm->next_in, len);
- strm->next_in += len;
- strm->total_in += len;
-
- return (int)len;
-}
-
-/* ===========================================================================
- * Initialize the "longest match" routines for a new zlib stream
- */
-local void lm_init (s)
- deflate_state *s;
-{
- s->window_size = (ulg)2L*s->w_size;
-
- CLEAR_HASH(s);
-
- /* Set the default configuration parameters:
- */
- s->max_lazy_match = configuration_table[s->level].max_lazy;
- s->good_match = configuration_table[s->level].good_length;
- s->nice_match = configuration_table[s->level].nice_length;
- s->max_chain_length = configuration_table[s->level].max_chain;
-
- s->strstart = 0;
- s->block_start = 0L;
- s->lookahead = 0;
- s->match_length = s->prev_length = MIN_MATCH-1;
- s->match_available = 0;
- s->ins_h = 0;
-#ifndef FASTEST
-#ifdef ASMV
- match_init(); /* initialize the asm code */
-#endif
-#endif
-}
-
-#ifndef FASTEST
-/* ===========================================================================
- * Set match_start to the longest match starting at the given string and
- * return its length. Matches shorter or equal to prev_length are discarded,
- * in which case the result is equal to prev_length and match_start is
- * garbage.
- * IN assertions: cur_match is the head of the hash chain for the current
- * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
- * OUT assertion: the match length is not greater than s->lookahead.
- */
-#ifndef ASMV
-/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
- * match.S. The code will be functionally equivalent.
- */
-local uInt longest_match(s, cur_match)
- deflate_state *s;
- IPos cur_match; /* current match */
-{
- unsigned chain_length = s->max_chain_length;/* max hash chain length */
- register Bytef *scan = s->window + s->strstart; /* current string */
- register Bytef *match; /* matched string */
- register int len; /* length of current match */
- int best_len = s->prev_length; /* best match length so far */
- int nice_match = s->nice_match; /* stop if match long enough */
- IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
- s->strstart - (IPos)MAX_DIST(s) : NIL;
- /* Stop when cur_match becomes <= limit. To simplify the code,
- * we prevent matches with the string of window index 0.
- */
- Posf *prev = s->prev;
- uInt wmask = s->w_mask;
-
-#ifdef UNALIGNED_OK
- /* Compare two bytes at a time. Note: this is not always beneficial.
- * Try with and without -DUNALIGNED_OK to check.
- */
- register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
- register ush scan_start = *(ushf*)scan;
- register ush scan_end = *(ushf*)(scan+best_len-1);
-#else
- register Bytef *strend = s->window + s->strstart + MAX_MATCH;
- register Byte scan_end1 = scan[best_len-1];
- register Byte scan_end = scan[best_len];
-#endif
-
- /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
- * It is easy to get rid of this optimization if necessary.
- */
- Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
-
- /* Do not waste too much time if we already have a good match: */
- if (s->prev_length >= s->good_match) {
- chain_length >>= 2;
- }
- /* Do not look for matches beyond the end of the input. This is necessary
- * to make deflate deterministic.
- */
- if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
-
- Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
-
- do {
- Assert(cur_match < s->strstart, "no future");
- match = s->window + cur_match;
-
- /* Skip to next match if the match length cannot increase
- * or if the match length is less than 2. Note that the checks below
- * for insufficient lookahead only occur occasionally for performance
- * reasons. Therefore uninitialized memory will be accessed, and
- * conditional jumps will be made that depend on those values.
- * However the length of the match is limited to the lookahead, so
- * the output of deflate is not affected by the uninitialized values.
- */
-#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
- /* This code assumes sizeof(unsigned short) == 2. Do not use
- * UNALIGNED_OK if your compiler uses a different size.
- */
- if (*(ushf*)(match+best_len-1) != scan_end ||
- *(ushf*)match != scan_start) continue;
-
- /* It is not necessary to compare scan[2] and match[2] since they are
- * always equal when the other bytes match, given that the hash keys
- * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
- * strstart+3, +5, ... up to strstart+257. We check for insufficient
- * lookahead only every 4th comparison; the 128th check will be made
- * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
- * necessary to put more guard bytes at the end of the window, or
- * to check more often for insufficient lookahead.
- */
- Assert(scan[2] == match[2], "scan[2]?");
- scan++, match++;
- do {
- } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- scan < strend);
- /* The funny "do {}" generates better code on most compilers */
-
- /* Here, scan <= window+strstart+257 */
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
- if (*scan == *match) scan++;
-
- len = (MAX_MATCH - 1) - (int)(strend-scan);
- scan = strend - (MAX_MATCH-1);
-
-#else /* UNALIGNED_OK */
-
- if (match[best_len] != scan_end ||
- match[best_len-1] != scan_end1 ||
- *match != *scan ||
- *++match != scan[1]) continue;
-
- /* The check at best_len-1 can be removed because it will be made
- * again later. (This heuristic is not always a win.)
- * It is not necessary to compare scan[2] and match[2] since they
- * are always equal when the other bytes match, given that
- * the hash keys are equal and that HASH_BITS >= 8.
- */
- scan += 2, match++;
- Assert(*scan == *match, "match[2]?");
-
- /* We check for insufficient lookahead only every 8th comparison;
- * the 256th check will be made at strstart+258.
- */
- do {
- } while (*++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- scan < strend);
-
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
-
- len = MAX_MATCH - (int)(strend - scan);
- scan = strend - MAX_MATCH;
-
-#endif /* UNALIGNED_OK */
-
- if (len > best_len) {
- s->match_start = cur_match;
- best_len = len;
- if (len >= nice_match) break;
-#ifdef UNALIGNED_OK
- scan_end = *(ushf*)(scan+best_len-1);
-#else
- scan_end1 = scan[best_len-1];
- scan_end = scan[best_len];
-#endif
- }
- } while ((cur_match = prev[cur_match & wmask]) > limit
- && --chain_length != 0);
-
- if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
- return s->lookahead;
-}
-#endif /* ASMV */
-#endif /* FASTEST */
-
-/* ---------------------------------------------------------------------------
- * Optimized version for level == 1 or strategy == Z_RLE only
- */
-local uInt longest_match_fast(s, cur_match)
- deflate_state *s;
- IPos cur_match; /* current match */
-{
- register Bytef *scan = s->window + s->strstart; /* current string */
- register Bytef *match; /* matched string */
- register int len; /* length of current match */
- register Bytef *strend = s->window + s->strstart + MAX_MATCH;
-
- /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
- * It is easy to get rid of this optimization if necessary.
- */
- Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
-
- Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
-
- Assert(cur_match < s->strstart, "no future");
-
- match = s->window + cur_match;
-
- /* Return failure if the match length is less than 2:
- */
- if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
-
- /* The check at best_len-1 can be removed because it will be made
- * again later. (This heuristic is not always a win.)
- * It is not necessary to compare scan[2] and match[2] since they
- * are always equal when the other bytes match, given that
- * the hash keys are equal and that HASH_BITS >= 8.
- */
- scan += 2, match += 2;
- Assert(*scan == *match, "match[2]?");
-
- /* We check for insufficient lookahead only every 8th comparison;
- * the 256th check will be made at strstart+258.
- */
- do {
- } while (*++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- scan < strend);
-
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
-
- len = MAX_MATCH - (int)(strend - scan);
-
- if (len < MIN_MATCH) return MIN_MATCH - 1;
-
- s->match_start = cur_match;
- return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;
-}
-
-#ifdef DEBUG
-#define EQUAL 0
-/* result of memcmp for equal strings */
-
-/* ===========================================================================
- * Check that the match at match_start is indeed a match.
- */
-local void check_match(s, start, match, length)
- deflate_state *s;
- IPos start, match;
- int length;
-{
- /* check that the match is indeed a match */
- if (zmemcmp(s->window + match,
- s->window + start, length) != EQUAL) {
- fprintf(stderr, " start %u, match %u, length %d\n",
- start, match, length);
- do {
- fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
- } while (--length != 0);
- z_error("invalid match");
- }
- if (z_verbose > 1) {
- fprintf(stderr,"\\[%d,%d]", start-match, length);
- do { putc(s->window[start++], stderr); } while (--length != 0);
- }
-}
-#else
-# define check_match(s, start, match, length)
-#endif /* DEBUG */
-
-/* ===========================================================================
- * Fill the window when the lookahead becomes insufficient.
- * Updates strstart and lookahead.
- *
- * IN assertion: lookahead < MIN_LOOKAHEAD
- * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
- * At least one byte has been read, or avail_in == 0; reads are
- * performed for at least two bytes (required for the zip translate_eol
- * option -- not supported here).
- */
-local void fill_window(s)
- deflate_state *s;
-{
- register unsigned n, m;
- register Posf *p;
- unsigned more; /* Amount of free space at the end of the window. */
- uInt wsize = s->w_size;
-
- do {
- more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
-
- /* Deal with !@#$% 64K limit: */
- if (sizeof(int) <= 2) {
- if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
- more = wsize;
-
- } else if (more == (unsigned)(-1)) {
- /* Very unlikely, but possible on 16 bit machine if
- * strstart == 0 && lookahead == 1 (input done a byte at time)
- */
- more--;
- }
- }
-
- /* If the window is almost full and there is insufficient lookahead,
- * move the upper half to the lower one to make room in the upper half.
- */
- if (s->strstart >= wsize+MAX_DIST(s)) {
-
- zmemcpy(s->window, s->window+wsize, (unsigned)wsize);
- s->match_start -= wsize;
- s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
- s->block_start -= (long) wsize;
-
- /* Slide the hash table (could be avoided with 32 bit values
- at the expense of memory usage). We slide even when level == 0
- to keep the hash table consistent if we switch back to level > 0
- later. (Using level 0 permanently is not an optimal usage of
- zlib, so we don't care about this pathological case.)
- */
- /* %%% avoid this when Z_RLE */
- n = s->hash_size;
- p = &s->head[n];
- do {
- m = *--p;
- *p = (Pos)(m >= wsize ? m-wsize : NIL);
- } while (--n);
-
- n = wsize;
-#ifndef FASTEST
- p = &s->prev[n];
- do {
- m = *--p;
- *p = (Pos)(m >= wsize ? m-wsize : NIL);
- /* If n is not on any hash chain, prev[n] is garbage but
- * its value will never be used.
- */
- } while (--n);
-#endif
- more += wsize;
- }
- if (s->strm->avail_in == 0) return;
-
- /* If there was no sliding:
- * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
- * more == window_size - lookahead - strstart
- * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
- * => more >= window_size - 2*WSIZE + 2
- * In the BIG_MEM or MMAP case (not yet supported),
- * window_size == input_size + MIN_LOOKAHEAD &&
- * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
- * Otherwise, window_size == 2*WSIZE so more >= 2.
- * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
- */
- Assert(more >= 2, "more < 2");
-
- n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
- s->lookahead += n;
-
- /* Initialize the hash value now that we have some input: */
- if (s->lookahead >= MIN_MATCH) {
- s->ins_h = s->window[s->strstart];
- UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
-#if MIN_MATCH != 3
- Call UPDATE_HASH() MIN_MATCH-3 more times
-#endif
- }
- /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
- * but this is not important since only literal bytes will be emitted.
- */
-
- } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
-}
-
-/* ===========================================================================
- * Flush the current block, with given end-of-file flag.
- * IN assertion: strstart is set to the end of the current match.
- */
-#define FLUSH_BLOCK_ONLY(s, eof) { \
- _tr_flush_block(s, (s->block_start >= 0L ? \
- (charf *)&s->window[(unsigned)s->block_start] : \
- (charf *)Z_NULL), \
- (ulg)((long)s->strstart - s->block_start), \
- (eof)); \
- s->block_start = s->strstart; \
- flush_pending(s->strm); \
- Tracev((stderr,"[FLUSH]")); \
-}
-
-/* Same but force premature exit if necessary. */
-#define FLUSH_BLOCK(s, eof) { \
- FLUSH_BLOCK_ONLY(s, eof); \
- if (s->strm->avail_out == 0) return (eof) ? finish_started : need_more; \
-}
-
-/* ===========================================================================
- * Copy without compression as much as possible from the input stream, return
- * the current block state.
- * This function does not insert new strings in the dictionary since
- * uncompressible data is probably not useful. This function is used
- * only for the level=0 compression option.
- * NOTE: this function should be optimized to avoid extra copying from
- * window to pending_buf.
- */
-local block_state deflate_stored(s, flush)
- deflate_state *s;
- int flush;
-{
- /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
- * to pending_buf_size, and each stored block has a 5 byte header:
- */
- ulg max_block_size = 0xffff;
- ulg max_start;
-
- if (max_block_size > s->pending_buf_size - 5) {
- max_block_size = s->pending_buf_size - 5;
- }
-
- /* Copy as much as possible from input to output: */
- for (;;) {
- /* Fill the window as much as possible: */
- if (s->lookahead <= 1) {
-
- Assert(s->strstart < s->w_size+MAX_DIST(s) ||
- s->block_start >= (long)s->w_size, "slide too late");
-
- fill_window(s);
- if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more;
-
- if (s->lookahead == 0) break; /* flush the current block */
- }
- Assert(s->block_start >= 0L, "block gone");
-
- s->strstart += s->lookahead;
- s->lookahead = 0;
-
- /* Emit a stored block if pending_buf will be full: */
- max_start = s->block_start + max_block_size;
- if (s->strstart == 0 || (ulg)s->strstart >= max_start) {
- /* strstart == 0 is possible when wraparound on 16-bit machine */
- s->lookahead = (uInt)(s->strstart - max_start);
- s->strstart = (uInt)max_start;
- FLUSH_BLOCK(s, 0);
- }
- /* Flush if we may have to slide, otherwise block_start may become
- * negative and the data will be gone:
- */
- if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) {
- FLUSH_BLOCK(s, 0);
- }
- }
- FLUSH_BLOCK(s, flush == Z_FINISH);
- return flush == Z_FINISH ? finish_done : block_done;
-}
-
-/* ===========================================================================
- * Compress as much as possible from the input stream, return the current
- * block state.
- * This function does not perform lazy evaluation of matches and inserts
- * new strings in the dictionary only for unmatched strings or for short
- * matches. It is used only for the fast compression options.
- */
-local block_state deflate_fast(s, flush)
- deflate_state *s;
- int flush;
-{
- IPos hash_head = NIL; /* head of the hash chain */
- int bflush; /* set if current block must be flushed */
-
- for (;;) {
- /* Make sure that we always have enough lookahead, except
- * at the end of the input file. We need MAX_MATCH bytes
- * for the next match, plus MIN_MATCH bytes to insert the
- * string following the next match.
- */
- if (s->lookahead < MIN_LOOKAHEAD) {
- fill_window(s);
- if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
- return need_more;
- }
- if (s->lookahead == 0) break; /* flush the current block */
- }
-
- /* Insert the string window[strstart .. strstart+2] in the
- * dictionary, and set hash_head to the head of the hash chain:
- */
- if (s->lookahead >= MIN_MATCH) {
- INSERT_STRING(s, s->strstart, hash_head);
- }
-
- /* Find the longest match, discarding those <= prev_length.
- * At this point we have always match_length < MIN_MATCH
- */
- if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
- /* To simplify the code, we prevent matches with the string
- * of window index 0 (in particular we have to avoid a match
- * of the string with itself at the start of the input file).
- */
-#ifdef FASTEST
- if ((s->strategy != Z_HUFFMAN_ONLY && s->strategy != Z_RLE) ||
- (s->strategy == Z_RLE && s->strstart - hash_head == 1)) {
- s->match_length = longest_match_fast (s, hash_head);
- }
-#else
- if (s->strategy != Z_HUFFMAN_ONLY && s->strategy != Z_RLE) {
- s->match_length = longest_match (s, hash_head);
- } else if (s->strategy == Z_RLE && s->strstart - hash_head == 1) {
- s->match_length = longest_match_fast (s, hash_head);
- }
-#endif
- /* longest_match() or longest_match_fast() sets match_start */
- }
- if (s->match_length >= MIN_MATCH) {
- check_match(s, s->strstart, s->match_start, s->match_length);
-
- _tr_tally_dist(s, s->strstart - s->match_start,
- s->match_length - MIN_MATCH, bflush);
-
- s->lookahead -= s->match_length;
-
- /* Insert new strings in the hash table only if the match length
- * is not too large. This saves time but degrades compression.
- */
-#ifndef FASTEST
- if (s->match_length <= s->max_insert_length &&
- s->lookahead >= MIN_MATCH) {
- s->match_length--; /* string at strstart already in table */
- do {
- s->strstart++;
- INSERT_STRING(s, s->strstart, hash_head);
- /* strstart never exceeds WSIZE-MAX_MATCH, so there are
- * always MIN_MATCH bytes ahead.
- */
- } while (--s->match_length != 0);
- s->strstart++;
- } else
-#endif
- {
- s->strstart += s->match_length;
- s->match_length = 0;
- s->ins_h = s->window[s->strstart];
- UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
-#if MIN_MATCH != 3
- Call UPDATE_HASH() MIN_MATCH-3 more times
-#endif
- /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
- * matter since it will be recomputed at next deflate call.
- */
- }
- } else {
- /* No match, output a literal byte */
- Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
- s->lookahead--;
- s->strstart++;
- }
- if (bflush) FLUSH_BLOCK(s, 0);
- }
- FLUSH_BLOCK(s, flush == Z_FINISH);
- return flush == Z_FINISH ? finish_done : block_done;
-}
-
-#ifndef FASTEST
-/* ===========================================================================
- * Same as above, but achieves better compression. We use a lazy
- * evaluation for matches: a match is finally adopted only if there is
- * no better match at the next window position.
- */
-local block_state deflate_slow(s, flush)
- deflate_state *s;
- int flush;
-{
- IPos hash_head = NIL; /* head of hash chain */
- int bflush; /* set if current block must be flushed */
-
- /* Process the input block. */
- for (;;) {
- /* Make sure that we always have enough lookahead, except
- * at the end of the input file. We need MAX_MATCH bytes
- * for the next match, plus MIN_MATCH bytes to insert the
- * string following the next match.
- */
- if (s->lookahead < MIN_LOOKAHEAD) {
- fill_window(s);
- if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
- return need_more;
- }
- if (s->lookahead == 0) break; /* flush the current block */
- }
-
- /* Insert the string window[strstart .. strstart+2] in the
- * dictionary, and set hash_head to the head of the hash chain:
- */
- if (s->lookahead >= MIN_MATCH) {
- INSERT_STRING(s, s->strstart, hash_head);
- }
-
- /* Find the longest match, discarding those <= prev_length.
- */
- s->prev_length = s->match_length, s->prev_match = s->match_start;
- s->match_length = MIN_MATCH-1;
-
- if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
- s->strstart - hash_head <= MAX_DIST(s)) {
- /* To simplify the code, we prevent matches with the string
- * of window index 0 (in particular we have to avoid a match
- * of the string with itself at the start of the input file).
- */
- if (s->strategy != Z_HUFFMAN_ONLY && s->strategy != Z_RLE) {
- s->match_length = longest_match (s, hash_head);
- } else if (s->strategy == Z_RLE && s->strstart - hash_head == 1) {
- s->match_length = longest_match_fast (s, hash_head);
- }
- /* longest_match() or longest_match_fast() sets match_start */
-
- if (s->match_length <= 5 && (s->strategy == Z_FILTERED
-#if TOO_FAR <= 32767
- || (s->match_length == MIN_MATCH &&
- s->strstart - s->match_start > TOO_FAR)
-#endif
- )) {
-
- /* If prev_match is also MIN_MATCH, match_start is garbage
- * but we will ignore the current match anyway.
- */
- s->match_length = MIN_MATCH-1;
- }
- }
- /* If there was a match at the previous step and the current
- * match is not better, output the previous match:
- */
- if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
- uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
- /* Do not insert strings in hash table beyond this. */
-
- check_match(s, s->strstart-1, s->prev_match, s->prev_length);
-
- _tr_tally_dist(s, s->strstart -1 - s->prev_match,
- s->prev_length - MIN_MATCH, bflush);
-
- /* Insert in hash table all strings up to the end of the match.
- * strstart-1 and strstart are already inserted. If there is not
- * enough lookahead, the last two strings are not inserted in
- * the hash table.
- */
- s->lookahead -= s->prev_length-1;
- s->prev_length -= 2;
- do {
- if (++s->strstart <= max_insert) {
- INSERT_STRING(s, s->strstart, hash_head);
- }
- } while (--s->prev_length != 0);
- s->match_available = 0;
- s->match_length = MIN_MATCH-1;
- s->strstart++;
-
- if (bflush) FLUSH_BLOCK(s, 0);
-
- } else if (s->match_available) {
- /* If there was no match at the previous position, output a
- * single literal. If there was a match but the current match
- * is longer, truncate the previous match to a single literal.
- */
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
- if (bflush) {
- FLUSH_BLOCK_ONLY(s, 0);
- }
- s->strstart++;
- s->lookahead--;
- if (s->strm->avail_out == 0) return need_more;
- } else {
- /* There is no previous match to compare with, wait for
- * the next step to decide.
- */
- s->match_available = 1;
- s->strstart++;
- s->lookahead--;
- }
- }
- Assert (flush != Z_NO_FLUSH, "no flush?");
- if (s->match_available) {
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
- s->match_available = 0;
- }
- FLUSH_BLOCK(s, flush == Z_FINISH);
- return flush == Z_FINISH ? finish_done : block_done;
-}
-#endif /* FASTEST */
-
-#if 0
-/* ===========================================================================
- * For Z_RLE, simply look for runs of bytes, generate matches only of distance
- * one. Do not maintain a hash table. (It will be regenerated if this run of
- * deflate switches away from Z_RLE.)
- */
-local block_state deflate_rle(s, flush)
- deflate_state *s;
- int flush;
-{
- int bflush; /* set if current block must be flushed */
- uInt run; /* length of run */
- uInt max; /* maximum length of run */
- uInt prev; /* byte at distance one to match */
- Bytef *scan; /* scan for end of run */
-
- for (;;) {
- /* Make sure that we always have enough lookahead, except
- * at the end of the input file. We need MAX_MATCH bytes
- * for the longest encodable run.
- */
- if (s->lookahead < MAX_MATCH) {
- fill_window(s);
- if (s->lookahead < MAX_MATCH && flush == Z_NO_FLUSH) {
- return need_more;
- }
- if (s->lookahead == 0) break; /* flush the current block */
- }
-
- /* See how many times the previous byte repeats */
- run = 0;
- if (s->strstart > 0) { /* if there is a previous byte, that is */
- max = s->lookahead < MAX_MATCH ? s->lookahead : MAX_MATCH;
- scan = s->window + s->strstart - 1;
- prev = *scan++;
- do {
- if (*scan++ != prev)
- break;
- } while (++run < max);
- }
-
- /* Emit match if have run of MIN_MATCH or longer, else emit literal */
- if (run >= MIN_MATCH) {
- check_match(s, s->strstart, s->strstart - 1, run);
- _tr_tally_dist(s, 1, run - MIN_MATCH, bflush);
- s->lookahead -= run;
- s->strstart += run;
- } else {
- /* No match, output a literal byte */
- Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
- s->lookahead--;
- s->strstart++;
- }
- if (bflush) FLUSH_BLOCK(s, 0);
- }
- FLUSH_BLOCK(s, flush == Z_FINISH);
- return flush == Z_FINISH ? finish_done : block_done;
-}
-#endif
+++ /dev/null
-/* deflate.h -- internal compression state
- * Copyright (C) 1995-2004 Jean-loup Gailly
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* @(#) $Id$ */
-
-#ifndef DEFLATE_H
-#define DEFLATE_H
-
-#include "zutil.h"
-
-/* define NO_GZIP when compiling if you want to disable gzip header and
- trailer creation by deflate(). NO_GZIP would be used to avoid linking in
- the crc code when it is not needed. For shared libraries, gzip encoding
- should be left enabled. */
-#ifndef NO_GZIP
-# define GZIP
-#endif
-
-/* ===========================================================================
- * Internal compression state.
- */
-
-#define LENGTH_CODES 29
-/* number of length codes, not counting the special END_BLOCK code */
-
-#define LITERALS 256
-/* number of literal bytes 0..255 */
-
-#define L_CODES (LITERALS+1+LENGTH_CODES)
-/* number of Literal or Length codes, including the END_BLOCK code */
-
-#define D_CODES 30
-/* number of distance codes */
-
-#define BL_CODES 19
-/* number of codes used to transfer the bit lengths */
-
-#define HEAP_SIZE (2*L_CODES+1)
-/* maximum heap size */
-
-#define MAX_BITS 15
-/* All codes must not exceed MAX_BITS bits */
-
-#define INIT_STATE 42
-#define EXTRA_STATE 69
-#define NAME_STATE 73
-#define COMMENT_STATE 91
-#define HCRC_STATE 103
-#define BUSY_STATE 113
-#define FINISH_STATE 666
-/* Stream status */
-
-
-/* Data structure describing a single value and its code string. */
-typedef struct ct_data_s {
- union {
- ush freq; /* frequency count */
- ush code; /* bit string */
- } fc;
- union {
- ush dad; /* father node in Huffman tree */
- ush len; /* length of bit string */
- } dl;
-} FAR ct_data;
-
-#define Freq fc.freq
-#define Code fc.code
-#define Dad dl.dad
-#define Len dl.len
-
-typedef struct static_tree_desc_s static_tree_desc;
-
-typedef struct tree_desc_s {
- ct_data *dyn_tree; /* the dynamic tree */
- int max_code; /* largest code with non zero frequency */
- static_tree_desc *stat_desc; /* the corresponding static tree */
-} FAR tree_desc;
-
-typedef ush Pos;
-typedef Pos FAR Posf;
-typedef unsigned IPos;
-
-/* A Pos is an index in the character window. We use short instead of int to
- * save space in the various tables. IPos is used only for parameter passing.
- */
-
-typedef struct internal_state {
- z_streamp strm; /* pointer back to this zlib stream */
- int status; /* as the name implies */
- Bytef *pending_buf; /* output still pending */
- ulg pending_buf_size; /* size of pending_buf */
- Bytef *pending_out; /* next pending byte to output to the stream */
- uInt pending; /* nb of bytes in the pending buffer */
- int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
- gz_headerp gzhead; /* gzip header information to write */
- uInt gzindex; /* where in extra, name, or comment */
- Byte method; /* STORED (for zip only) or DEFLATED */
- int last_flush; /* value of flush param for previous deflate call */
-
- /* used by deflate.c: */
-
- uInt w_size; /* LZ77 window size (32K by default) */
- uInt w_bits; /* log2(w_size) (8..16) */
- uInt w_mask; /* w_size - 1 */
-
- Bytef *window;
- /* Sliding window. Input bytes are read into the second half of the window,
- * and move to the first half later to keep a dictionary of at least wSize
- * bytes. With this organization, matches are limited to a distance of
- * wSize-MAX_MATCH bytes, but this ensures that IO is always
- * performed with a length multiple of the block size. Also, it limits
- * the window size to 64K, which is quite useful on MSDOS.
- * To do: use the user input buffer as sliding window.
- */
-
- ulg window_size;
- /* Actual size of window: 2*wSize, except when the user input buffer
- * is directly used as sliding window.
- */
-
- Posf *prev;
- /* Link to older string with same hash index. To limit the size of this
- * array to 64K, this link is maintained only for the last 32K strings.
- * An index in this array is thus a window index modulo 32K.
- */
-
- Posf *head; /* Heads of the hash chains or NIL. */
-
- uInt ins_h; /* hash index of string to be inserted */
- uInt hash_size; /* number of elements in hash table */
- uInt hash_bits; /* log2(hash_size) */
- uInt hash_mask; /* hash_size-1 */
-
- uInt hash_shift;
- /* Number of bits by which ins_h must be shifted at each input
- * step. It must be such that after MIN_MATCH steps, the oldest
- * byte no longer takes part in the hash key, that is:
- * hash_shift * MIN_MATCH >= hash_bits
- */
-
- long block_start;
- /* Window position at the beginning of the current output block. Gets
- * negative when the window is moved backwards.
- */
-
- uInt match_length; /* length of best match */
- IPos prev_match; /* previous match */
- int match_available; /* set if previous match exists */
- uInt strstart; /* start of string to insert */
- uInt match_start; /* start of matching string */
- uInt lookahead; /* number of valid bytes ahead in window */
-
- uInt prev_length;
- /* Length of the best match at previous step. Matches not greater than this
- * are discarded. This is used in the lazy match evaluation.
- */
-
- uInt max_chain_length;
- /* To speed up deflation, hash chains are never searched beyond this
- * length. A higher limit improves compression ratio but degrades the
- * speed.
- */
-
- uInt max_lazy_match;
- /* Attempt to find a better match only when the current match is strictly
- * smaller than this value. This mechanism is used only for compression
- * levels >= 4.
- */
-# define max_insert_length max_lazy_match
- /* Insert new strings in the hash table only if the match length is not
- * greater than this length. This saves time but degrades compression.
- * max_insert_length is used only for compression levels <= 3.
- */
-
- int level; /* compression level (1..9) */
- int strategy; /* favor or force Huffman coding*/
-
- uInt good_match;
- /* Use a faster search when the previous match is longer than this */
-
- int nice_match; /* Stop searching when current match exceeds this */
-
- /* used by trees.c: */
- /* Didn't use ct_data typedef below to suppress compiler warning */
- struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */
- struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
- struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */
-
- struct tree_desc_s l_desc; /* desc. for literal tree */
- struct tree_desc_s d_desc; /* desc. for distance tree */
- struct tree_desc_s bl_desc; /* desc. for bit length tree */
-
- ush bl_count[MAX_BITS+1];
- /* number of codes at each bit length for an optimal tree */
-
- int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */
- int heap_len; /* number of elements in the heap */
- int heap_max; /* element of largest frequency */
- /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
- * The same heap array is used to build all trees.
- */
-
- uch depth[2*L_CODES+1];
- /* Depth of each subtree used as tie breaker for trees of equal frequency
- */
-
- uchf *l_buf; /* buffer for literals or lengths */
-
- uInt lit_bufsize;
- /* Size of match buffer for literals/lengths. There are 4 reasons for
- * limiting lit_bufsize to 64K:
- * - frequencies can be kept in 16 bit counters
- * - if compression is not successful for the first block, all input
- * data is still in the window so we can still emit a stored block even
- * when input comes from standard input. (This can also be done for
- * all blocks if lit_bufsize is not greater than 32K.)
- * - if compression is not successful for a file smaller than 64K, we can
- * even emit a stored file instead of a stored block (saving 5 bytes).
- * This is applicable only for zip (not gzip or zlib).
- * - creating new Huffman trees less frequently may not provide fast
- * adaptation to changes in the input data statistics. (Take for
- * example a binary file with poorly compressible code followed by
- * a highly compressible string table.) Smaller buffer sizes give
- * fast adaptation but have of course the overhead of transmitting
- * trees more frequently.
- * - I can't count above 4
- */
-
- uInt last_lit; /* running index in l_buf */
-
- ushf *d_buf;
- /* Buffer for distances. To simplify the code, d_buf and l_buf have
- * the same number of elements. To use different lengths, an extra flag
- * array would be necessary.
- */
-
- ulg opt_len; /* bit length of current block with optimal trees */
- ulg static_len; /* bit length of current block with static trees */
- uInt matches; /* number of string matches in current block */
- int last_eob_len; /* bit length of EOB code for last block */
-
-#ifdef DEBUG
- ulg compressed_len; /* total bit length of compressed file mod 2^32 */
- ulg bits_sent; /* bit length of compressed data sent mod 2^32 */
-#endif
-
- ush bi_buf;
- /* Output buffer. bits are inserted starting at the bottom (least
- * significant bits).
- */
- int bi_valid;
- /* Number of valid bits in bi_buf. All bits above the last valid bit
- * are always zero.
- */
-
-} FAR deflate_state;
-
-/* Output a byte on the stream.
- * IN assertion: there is enough room in pending_buf.
- */
-#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}
-
-
-#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
-/* Minimum amount of lookahead, except at the end of the input file.
- * See deflate.c for comments about the MIN_MATCH+1.
- */
-
-#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)
-/* In order to simplify the code, particularly on 16 bit machines, match
- * distances are limited to MAX_DIST instead of WSIZE.
- */
-
- /* in trees.c */
-void _tr_init OF((deflate_state *s));
-int _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
-void _tr_flush_block OF((deflate_state *s, charf *buf, ulg stored_len,
- int eof));
-void _tr_align OF((deflate_state *s));
-void _tr_stored_block OF((deflate_state *s, charf *buf, ulg stored_len,
- int eof));
-
-#define d_code(dist) \
- ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
-/* Mapping from a distance to a distance code. dist is the distance - 1 and
- * must not have side effects. _dist_code[256] and _dist_code[257] are never
- * used.
- */
-
-#ifndef DEBUG
-/* Inline versions of _tr_tally for speed: */
-
-#if defined(GEN_TREES_H) || !defined(STDC)
- extern uch _length_code[];
- extern uch _dist_code[];
-#else
- extern const uch _length_code[];
- extern const uch _dist_code[];
-#endif
-
-# define _tr_tally_lit(s, c, flush) \
- { uch cc = (c); \
- s->d_buf[s->last_lit] = 0; \
- s->l_buf[s->last_lit++] = cc; \
- s->dyn_ltree[cc].Freq++; \
- flush = (s->last_lit == s->lit_bufsize-1); \
- }
-# define _tr_tally_dist(s, distance, length, flush) \
- { uch len = (length); \
- ush dist = (distance); \
- s->d_buf[s->last_lit] = dist; \
- s->l_buf[s->last_lit++] = len; \
- dist--; \
- s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
- s->dyn_dtree[d_code(dist)].Freq++; \
- flush = (s->last_lit == s->lit_bufsize-1); \
- }
-#else
-# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
-# define _tr_tally_dist(s, distance, length, flush) \
- flush = _tr_tally(s, distance, length)
-#endif
-
-#endif /* DEFLATE_H */
+++ /dev/null
-/* example.c -- usage example of the zlib compression library
- * Copyright (C) 1995-2004 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include <stdio.h>
-#include "zlib.h"
-
-#ifdef STDC
-# include <string.h>
-# include <stdlib.h>
-#endif
-
-#if defined(VMS) || defined(RISCOS)
-# define TESTFILE "foo-gz"
-#else
-# define TESTFILE "foo.gz"
-#endif
-
-#define CHECK_ERR(err, msg) { \
- if (err != Z_OK) { \
- fprintf(stderr, "%s error: %d\n", msg, err); \
- exit(1); \
- } \
-}
-
-const char hello[] = "hello, hello!";
-/* "hello world" would be more standard, but the repeated "hello"
- * stresses the compression code better, sorry...
- */
-
-const char dictionary[] = "hello";
-uLong dictId; /* Adler32 value of the dictionary */
-
-void test_compress OF((Byte *compr, uLong comprLen,
- Byte *uncompr, uLong uncomprLen));
-void test_gzio OF((const char *fname,
- Byte *uncompr, uLong uncomprLen));
-void test_deflate OF((Byte *compr, uLong comprLen));
-void test_inflate OF((Byte *compr, uLong comprLen,
- Byte *uncompr, uLong uncomprLen));
-void test_large_deflate OF((Byte *compr, uLong comprLen,
- Byte *uncompr, uLong uncomprLen));
-void test_large_inflate OF((Byte *compr, uLong comprLen,
- Byte *uncompr, uLong uncomprLen));
-void test_flush OF((Byte *compr, uLong *comprLen));
-void test_sync OF((Byte *compr, uLong comprLen,
- Byte *uncompr, uLong uncomprLen));
-void test_dict_deflate OF((Byte *compr, uLong comprLen));
-void test_dict_inflate OF((Byte *compr, uLong comprLen,
- Byte *uncompr, uLong uncomprLen));
-int main OF((int argc, char *argv[]));
-
-/* ===========================================================================
- * Test compress() and uncompress()
- */
-void test_compress(compr, comprLen, uncompr, uncomprLen)
- Byte *compr, *uncompr;
- uLong comprLen, uncomprLen;
-{
- int err;
- uLong len = (uLong)strlen(hello)+1;
-
- err = compress(compr, &comprLen, (const Bytef*)hello, len);
- CHECK_ERR(err, "compress");
-
- strcpy((char*)uncompr, "garbage");
-
- err = uncompress(uncompr, &uncomprLen, compr, comprLen);
- CHECK_ERR(err, "uncompress");
-
- if (strcmp((char*)uncompr, hello)) {
- fprintf(stderr, "bad uncompress\n");
- exit(1);
- } else {
- printf("uncompress(): %s\n", (char *)uncompr);
- }
-}
-
-/* ===========================================================================
- * Test read/write of .gz files
- */
-void test_gzio(fname, uncompr, uncomprLen)
- const char *fname; /* compressed file name */
- Byte *uncompr;
- uLong uncomprLen;
-{
-#ifdef NO_GZCOMPRESS
- fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n");
-#else
- int err;
- int len = (int)strlen(hello)+1;
- gzFile file;
- z_off_t pos;
-
- file = gzopen(fname, "wb");
- if (file == NULL) {
- fprintf(stderr, "gzopen error\n");
- exit(1);
- }
- gzputc(file, 'h');
- if (gzputs(file, "ello") != 4) {
- fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err));
- exit(1);
- }
- if (gzprintf(file, ", %s!", "hello") != 8) {
- fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err));
- exit(1);
- }
- gzseek(file, 1L, SEEK_CUR); /* add one zero byte */
- gzclose(file);
-
- file = gzopen(fname, "rb");
- if (file == NULL) {
- fprintf(stderr, "gzopen error\n");
- exit(1);
- }
- strcpy((char*)uncompr, "garbage");
-
- if (gzread(file, uncompr, (unsigned)uncomprLen) != len) {
- fprintf(stderr, "gzread err: %s\n", gzerror(file, &err));
- exit(1);
- }
- if (strcmp((char*)uncompr, hello)) {
- fprintf(stderr, "bad gzread: %s\n", (char*)uncompr);
- exit(1);
- } else {
- printf("gzread(): %s\n", (char*)uncompr);
- }
-
- pos = gzseek(file, -8L, SEEK_CUR);
- if (pos != 6 || gztell(file) != pos) {
- fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n",
- (long)pos, (long)gztell(file));
- exit(1);
- }
-
- if (gzgetc(file) != ' ') {
- fprintf(stderr, "gzgetc error\n");
- exit(1);
- }
-
- if (gzungetc(' ', file) != ' ') {
- fprintf(stderr, "gzungetc error\n");
- exit(1);
- }
-
- gzgets(file, (char*)uncompr, (int)uncomprLen);
- if (strlen((char*)uncompr) != 7) { /* " hello!" */
- fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err));
- exit(1);
- }
- if (strcmp((char*)uncompr, hello + 6)) {
- fprintf(stderr, "bad gzgets after gzseek\n");
- exit(1);
- } else {
- printf("gzgets() after gzseek: %s\n", (char*)uncompr);
- }
-
- gzclose(file);
-#endif
-}
-
-/* ===========================================================================
- * Test deflate() with small buffers
- */
-void test_deflate(compr, comprLen)
- Byte *compr;
- uLong comprLen;
-{
- z_stream c_stream; /* compression stream */
- int err;
- uLong len = (uLong)strlen(hello)+1;
-
- c_stream.zalloc = (alloc_func)0;
- c_stream.zfree = (free_func)0;
- c_stream.opaque = (voidpf)0;
-
- err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
- CHECK_ERR(err, "deflateInit");
-
- c_stream.next_in = (Bytef*)hello;
- c_stream.next_out = compr;
-
- while (c_stream.total_in != len && c_stream.total_out < comprLen) {
- c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
- err = deflate(&c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, "deflate");
- }
- /* Finish the stream, still forcing small buffers: */
- for (;;) {
- c_stream.avail_out = 1;
- err = deflate(&c_stream, Z_FINISH);
- if (err == Z_STREAM_END) break;
- CHECK_ERR(err, "deflate");
- }
-
- err = deflateEnd(&c_stream);
- CHECK_ERR(err, "deflateEnd");
-}
-
-/* ===========================================================================
- * Test inflate() with small buffers
- */
-void test_inflate(compr, comprLen, uncompr, uncomprLen)
- Byte *compr, *uncompr;
- uLong comprLen, uncomprLen;
-{
- int err;
- z_stream d_stream; /* decompression stream */
-
- strcpy((char*)uncompr, "garbage");
-
- d_stream.zalloc = (alloc_func)0;
- d_stream.zfree = (free_func)0;
- d_stream.opaque = (voidpf)0;
-
- d_stream.next_in = compr;
- d_stream.avail_in = 0;
- d_stream.next_out = uncompr;
-
- err = inflateInit(&d_stream);
- CHECK_ERR(err, "inflateInit");
-
- while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) {
- d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */
- err = inflate(&d_stream, Z_NO_FLUSH);
- if (err == Z_STREAM_END) break;
- CHECK_ERR(err, "inflate");
- }
-
- err = inflateEnd(&d_stream);
- CHECK_ERR(err, "inflateEnd");
-
- if (strcmp((char*)uncompr, hello)) {
- fprintf(stderr, "bad inflate\n");
- exit(1);
- } else {
- printf("inflate(): %s\n", (char *)uncompr);
- }
-}
-
-/* ===========================================================================
- * Test deflate() with large buffers and dynamic change of compression level
- */
-void test_large_deflate(compr, comprLen, uncompr, uncomprLen)
- Byte *compr, *uncompr;
- uLong comprLen, uncomprLen;
-{
- z_stream c_stream; /* compression stream */
- int err;
-
- c_stream.zalloc = (alloc_func)0;
- c_stream.zfree = (free_func)0;
- c_stream.opaque = (voidpf)0;
-
- err = deflateInit(&c_stream, Z_BEST_SPEED);
- CHECK_ERR(err, "deflateInit");
-
- c_stream.next_out = compr;
- c_stream.avail_out = (uInt)comprLen;
-
- /* At this point, uncompr is still mostly zeroes, so it should compress
- * very well:
- */
- c_stream.next_in = uncompr;
- c_stream.avail_in = (uInt)uncomprLen;
- err = deflate(&c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, "deflate");
- if (c_stream.avail_in != 0) {
- fprintf(stderr, "deflate not greedy\n");
- exit(1);
- }
-
- /* Feed in already compressed data and switch to no compression: */
- deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
- c_stream.next_in = compr;
- c_stream.avail_in = (uInt)comprLen/2;
- err = deflate(&c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, "deflate");
-
- /* Switch back to compressing mode: */
- deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
- c_stream.next_in = uncompr;
- c_stream.avail_in = (uInt)uncomprLen;
- err = deflate(&c_stream, Z_NO_FLUSH);
- CHECK_ERR(err, "deflate");
-
- err = deflate(&c_stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- fprintf(stderr, "deflate should report Z_STREAM_END\n");
- exit(1);
- }
- err = deflateEnd(&c_stream);
- CHECK_ERR(err, "deflateEnd");
-}
-
-/* ===========================================================================
- * Test inflate() with large buffers
- */
-void test_large_inflate(compr, comprLen, uncompr, uncomprLen)
- Byte *compr, *uncompr;
- uLong comprLen, uncomprLen;
-{
- int err;
- z_stream d_stream; /* decompression stream */
-
- strcpy((char*)uncompr, "garbage");
-
- d_stream.zalloc = (alloc_func)0;
- d_stream.zfree = (free_func)0;
- d_stream.opaque = (voidpf)0;
-
- d_stream.next_in = compr;
- d_stream.avail_in = (uInt)comprLen;
-
- err = inflateInit(&d_stream);
- CHECK_ERR(err, "inflateInit");
-
- for (;;) {
- d_stream.next_out = uncompr; /* discard the output */
- d_stream.avail_out = (uInt)uncomprLen;
- err = inflate(&d_stream, Z_NO_FLUSH);
- if (err == Z_STREAM_END) break;
- CHECK_ERR(err, "large inflate");
- }
-
- err = inflateEnd(&d_stream);
- CHECK_ERR(err, "inflateEnd");
-
- if (d_stream.total_out != 2*uncomprLen + comprLen/2) {
- fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out);
- exit(1);
- } else {
- printf("large_inflate(): OK\n");
- }
-}
-
-/* ===========================================================================
- * Test deflate() with full flush
- */
-void test_flush(compr, comprLen)
- Byte *compr;
- uLong *comprLen;
-{
- z_stream c_stream; /* compression stream */
- int err;
- uInt len = (uInt)strlen(hello)+1;
-
- c_stream.zalloc = (alloc_func)0;
- c_stream.zfree = (free_func)0;
- c_stream.opaque = (voidpf)0;
-
- err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
- CHECK_ERR(err, "deflateInit");
-
- c_stream.next_in = (Bytef*)hello;
- c_stream.next_out = compr;
- c_stream.avail_in = 3;
- c_stream.avail_out = (uInt)*comprLen;
- err = deflate(&c_stream, Z_FULL_FLUSH);
- CHECK_ERR(err, "deflate");
-
- compr[3]++; /* force an error in first compressed block */
- c_stream.avail_in = len - 3;
-
- err = deflate(&c_stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- CHECK_ERR(err, "deflate");
- }
- err = deflateEnd(&c_stream);
- CHECK_ERR(err, "deflateEnd");
-
- *comprLen = c_stream.total_out;
-}
-
-/* ===========================================================================
- * Test inflateSync()
- */
-void test_sync(compr, comprLen, uncompr, uncomprLen)
- Byte *compr, *uncompr;
- uLong comprLen, uncomprLen;
-{
- int err;
- z_stream d_stream; /* decompression stream */
-
- strcpy((char*)uncompr, "garbage");
-
- d_stream.zalloc = (alloc_func)0;
- d_stream.zfree = (free_func)0;
- d_stream.opaque = (voidpf)0;
-
- d_stream.next_in = compr;
- d_stream.avail_in = 2; /* just read the zlib header */
-
- err = inflateInit(&d_stream);
- CHECK_ERR(err, "inflateInit");
-
- d_stream.next_out = uncompr;
- d_stream.avail_out = (uInt)uncomprLen;
-
- inflate(&d_stream, Z_NO_FLUSH);
- CHECK_ERR(err, "inflate");
-
- d_stream.avail_in = (uInt)comprLen-2; /* read all compressed data */
- err = inflateSync(&d_stream); /* but skip the damaged part */
- CHECK_ERR(err, "inflateSync");
-
- err = inflate(&d_stream, Z_FINISH);
- if (err != Z_DATA_ERROR) {
- fprintf(stderr, "inflate should report DATA_ERROR\n");
- /* Because of incorrect adler32 */
- exit(1);
- }
- err = inflateEnd(&d_stream);
- CHECK_ERR(err, "inflateEnd");
-
- printf("after inflateSync(): hel%s\n", (char *)uncompr);
-}
-
-/* ===========================================================================
- * Test deflate() with preset dictionary
- */
-void test_dict_deflate(compr, comprLen)
- Byte *compr;
- uLong comprLen;
-{
- z_stream c_stream; /* compression stream */
- int err;
-
- c_stream.zalloc = (alloc_func)0;
- c_stream.zfree = (free_func)0;
- c_stream.opaque = (voidpf)0;
-
- err = deflateInit(&c_stream, Z_BEST_COMPRESSION);
- CHECK_ERR(err, "deflateInit");
-
- err = deflateSetDictionary(&c_stream,
- (const Bytef*)dictionary, sizeof(dictionary));
- CHECK_ERR(err, "deflateSetDictionary");
-
- dictId = c_stream.adler;
- c_stream.next_out = compr;
- c_stream.avail_out = (uInt)comprLen;
-
- c_stream.next_in = (Bytef*)hello;
- c_stream.avail_in = (uInt)strlen(hello)+1;
-
- err = deflate(&c_stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- fprintf(stderr, "deflate should report Z_STREAM_END\n");
- exit(1);
- }
- err = deflateEnd(&c_stream);
- CHECK_ERR(err, "deflateEnd");
-}
-
-/* ===========================================================================
- * Test inflate() with a preset dictionary
- */
-void test_dict_inflate(compr, comprLen, uncompr, uncomprLen)
- Byte *compr, *uncompr;
- uLong comprLen, uncomprLen;
-{
- int err;
- z_stream d_stream; /* decompression stream */
-
- strcpy((char*)uncompr, "garbage");
-
- d_stream.zalloc = (alloc_func)0;
- d_stream.zfree = (free_func)0;
- d_stream.opaque = (voidpf)0;
-
- d_stream.next_in = compr;
- d_stream.avail_in = (uInt)comprLen;
-
- err = inflateInit(&d_stream);
- CHECK_ERR(err, "inflateInit");
-
- d_stream.next_out = uncompr;
- d_stream.avail_out = (uInt)uncomprLen;
-
- for (;;) {
- err = inflate(&d_stream, Z_NO_FLUSH);
- if (err == Z_STREAM_END) break;
- if (err == Z_NEED_DICT) {
- if (d_stream.adler != dictId) {
- fprintf(stderr, "unexpected dictionary");
- exit(1);
- }
- err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary,
- sizeof(dictionary));
- }
- CHECK_ERR(err, "inflate with dict");
- }
-
- err = inflateEnd(&d_stream);
- CHECK_ERR(err, "inflateEnd");
-
- if (strcmp((char*)uncompr, hello)) {
- fprintf(stderr, "bad inflate with dict\n");
- exit(1);
- } else {
- printf("inflate with dictionary: %s\n", (char *)uncompr);
- }
-}
-
-/* ===========================================================================
- * Usage: example [output.gz [input.gz]]
- */
-
-int main(argc, argv)
- int argc;
- char *argv[];
-{
- Byte *compr, *uncompr;
- uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */
- uLong uncomprLen = comprLen;
- static const char* myVersion = ZLIB_VERSION;
-
- if (zlibVersion()[0] != myVersion[0]) {
- fprintf(stderr, "incompatible zlib version\n");
- exit(1);
-
- } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) {
- fprintf(stderr, "warning: different zlib version\n");
- }
-
- printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n",
- ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags());
-
- compr = (Byte*)calloc((uInt)comprLen, 1);
- uncompr = (Byte*)calloc((uInt)uncomprLen, 1);
- /* compr and uncompr are cleared to avoid reading uninitialized
- * data and to ensure that uncompr compresses well.
- */
- if (compr == Z_NULL || uncompr == Z_NULL) {
- printf("out of memory\n");
- exit(1);
- }
- test_compress(compr, comprLen, uncompr, uncomprLen);
-
- test_gzio((argc > 1 ? argv[1] : TESTFILE),
- uncompr, uncomprLen);
-
- test_deflate(compr, comprLen);
- test_inflate(compr, comprLen, uncompr, uncomprLen);
-
- test_large_deflate(compr, comprLen, uncompr, uncomprLen);
- test_large_inflate(compr, comprLen, uncompr, uncomprLen);
-
- test_flush(compr, &comprLen);
- test_sync(compr, comprLen, uncompr, uncomprLen);
- comprLen = uncomprLen;
-
- test_dict_deflate(compr, comprLen);
- test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
-
- free(compr);
- free(uncompr);
-
- return 0;
-}
+++ /dev/null
-This directory contains examples of the use of zlib.
-
-fitblk.c
- compress just enough input to nearly fill a requested output size
- - zlib isn't designed to do this, but fitblk does it anyway
-
-gun.c
- uncompress a gzip file
- - illustrates the use of inflateBack() for high speed file-to-file
- decompression using call-back functions
- - is approximately twice as fast as gzip -d
- - also provides Unix uncompress functionality, again twice as fast
-
-gzappend.c
- append to a gzip file
- - illustrates the use of the Z_BLOCK flush parameter for inflate()
- - illustrates the use of deflatePrime() to start at any bit
-
-gzjoin.c
- join gzip files without recalculating the crc or recompressing
- - illustrates the use of the Z_BLOCK flush parameter for inflate()
- - illustrates the use of crc32_combine()
-
-gzlog.c
-gzlog.h
- efficiently maintain a message log file in gzip format
- - illustrates use of raw deflate and Z_SYNC_FLUSH
- - illustrates use of gzip header extra field
-
-zlib_how.html
- painfully comprehensive description of zpipe.c (see below)
- - describes in excruciating detail the use of deflate() and inflate()
-
-zpipe.c
- reads and writes zlib streams from stdin to stdout
- - illustrates the proper use of deflate() and inflate()
- - deeply commented in zlib_how.html (see above)
-
-zran.c
- index a zlib or gzip stream and randomly access it
- - illustrates the use of Z_BLOCK, inflatePrime(), and
- inflateSetDictionary() to provide random access
+++ /dev/null
-/* fitblk.c: example of fitting compressed output to a specified size
- Not copyrighted -- provided to the public domain
- Version 1.1 25 November 2004 Mark Adler */
-
-/* Version history:
- 1.0 24 Nov 2004 First version
- 1.1 25 Nov 2004 Change deflateInit2() to deflateInit()
- Use fixed-size, stack-allocated raw buffers
- Simplify code moving compression to subroutines
- Use assert() for internal errors
- Add detailed description of approach
- */
-
-/* Approach to just fitting a requested compressed size:
-
- fitblk performs three compression passes on a portion of the input
- data in order to determine how much of that input will compress to
- nearly the requested output block size. The first pass generates
- enough deflate blocks to produce output to fill the requested
- output size plus a specified excess amount (see the EXCESS define
- below). The last deflate block may go quite a bit past that, but
- is discarded. The second pass decompresses and recompresses just
- the compressed data that fit in the requested plus excess sized
- buffer. The deflate process is terminated after that amount of
- input, which is less than the amount consumed on the first pass.
- The last deflate block of the result will be of a comparable size
- to the final product, so that the header for that deflate block and
- the compression ratio for that block will be about the same as in
- the final product. The third compression pass decompresses the
- result of the second step, but only the compressed data up to the
- requested size minus an amount to allow the compressed stream to
- complete (see the MARGIN define below). That will result in a
- final compressed stream whose length is less than or equal to the
- requested size. Assuming sufficient input and a requested size
- greater than a few hundred bytes, the shortfall will typically be
- less than ten bytes.
-
- If the input is short enough that the first compression completes
- before filling the requested output size, then that compressed
- stream is return with no recompression.
-
- EXCESS is chosen to be just greater than the shortfall seen in a
- two pass approach similar to the above. That shortfall is due to
- the last deflate block compressing more efficiently with a smaller
- header on the second pass. EXCESS is set to be large enough so
- that there is enough uncompressed data for the second pass to fill
- out the requested size, and small enough so that the final deflate
- block of the second pass will be close in size to the final deflate
- block of the third and final pass. MARGIN is chosen to be just
- large enough to assure that the final compression has enough room
- to complete in all cases.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include "zlib.h"
-
-#define local static
-
-/* print nastygram and leave */
-local void quit(char *why)
-{
- fprintf(stderr, "fitblk abort: %s\n", why);
- exit(1);
-}
-
-#define RAWLEN 4096 /* intermediate uncompressed buffer size */
-
-/* compress from file to def until provided buffer is full or end of
- input reached; return last deflate() return value, or Z_ERRNO if
- there was read error on the file */
-local int partcompress(FILE *in, z_streamp def)
-{
- int ret, flush;
- unsigned char raw[RAWLEN];
-
- flush = Z_NO_FLUSH;
- do {
- def->avail_in = fread(raw, 1, RAWLEN, in);
- if (ferror(in))
- return Z_ERRNO;
- def->next_in = raw;
- if (feof(in))
- flush = Z_FINISH;
- ret = deflate(def, flush);
- assert(ret != Z_STREAM_ERROR);
- } while (def->avail_out != 0 && flush == Z_NO_FLUSH);
- return ret;
-}
-
-/* recompress from inf's input to def's output; the input for inf and
- the output for def are set in those structures before calling;
- return last deflate() return value, or Z_MEM_ERROR if inflate()
- was not able to allocate enough memory when it needed to */
-local int recompress(z_streamp inf, z_streamp def)
-{
- int ret, flush;
- unsigned char raw[RAWLEN];
-
- flush = Z_NO_FLUSH;
- do {
- /* decompress */
- inf->avail_out = RAWLEN;
- inf->next_out = raw;
- ret = inflate(inf, Z_NO_FLUSH);
- assert(ret != Z_STREAM_ERROR && ret != Z_DATA_ERROR &&
- ret != Z_NEED_DICT);
- if (ret == Z_MEM_ERROR)
- return ret;
-
- /* compress what was decompresed until done or no room */
- def->avail_in = RAWLEN - inf->avail_out;
- def->next_in = raw;
- if (inf->avail_out != 0)
- flush = Z_FINISH;
- ret = deflate(def, flush);
- assert(ret != Z_STREAM_ERROR);
- } while (ret != Z_STREAM_END && def->avail_out != 0);
- return ret;
-}
-
-#define EXCESS 256 /* empirically determined stream overage */
-#define MARGIN 8 /* amount to back off for completion */
-
-/* compress from stdin to fixed-size block on stdout */
-int main(int argc, char **argv)
-{
- int ret; /* return code */
- unsigned size; /* requested fixed output block size */
- unsigned have; /* bytes written by deflate() call */
- unsigned char *blk; /* intermediate and final stream */
- unsigned char *tmp; /* close to desired size stream */
- z_stream def, inf; /* zlib deflate and inflate states */
-
- /* get requested output size */
- if (argc != 2)
- quit("need one argument: size of output block");
- ret = strtol(argv[1], argv + 1, 10);
- if (argv[1][0] != 0)
- quit("argument must be a number");
- if (ret < 8) /* 8 is minimum zlib stream size */
- quit("need positive size of 8 or greater");
- size = (unsigned)ret;
-
- /* allocate memory for buffers and compression engine */
- blk = malloc(size + EXCESS);
- def.zalloc = Z_NULL;
- def.zfree = Z_NULL;
- def.opaque = Z_NULL;
- ret = deflateInit(&def, Z_DEFAULT_COMPRESSION);
- if (ret != Z_OK || blk == NULL)
- quit("out of memory");
-
- /* compress from stdin until output full, or no more input */
- def.avail_out = size + EXCESS;
- def.next_out = blk;
- ret = partcompress(stdin, &def);
- if (ret == Z_ERRNO)
- quit("error reading input");
-
- /* if it all fit, then size was undersubscribed -- done! */
- if (ret == Z_STREAM_END && def.avail_out >= EXCESS) {
- /* write block to stdout */
- have = size + EXCESS - def.avail_out;
- if (fwrite(blk, 1, have, stdout) != have || ferror(stdout))
- quit("error writing output");
-
- /* clean up and print results to stderr */
- ret = deflateEnd(&def);
- assert(ret != Z_STREAM_ERROR);
- free(blk);
- fprintf(stderr,
- "%u bytes unused out of %u requested (all input)\n",
- size - have, size);
- return 0;
- }
-
- /* it didn't all fit -- set up for recompression */
- inf.zalloc = Z_NULL;
- inf.zfree = Z_NULL;
- inf.opaque = Z_NULL;
- inf.avail_in = 0;
- inf.next_in = Z_NULL;
- ret = inflateInit(&inf);
- tmp = malloc(size + EXCESS);
- if (ret != Z_OK || tmp == NULL)
- quit("out of memory");
- ret = deflateReset(&def);
- assert(ret != Z_STREAM_ERROR);
-
- /* do first recompression close to the right amount */
- inf.avail_in = size + EXCESS;
- inf.next_in = blk;
- def.avail_out = size + EXCESS;
- def.next_out = tmp;
- ret = recompress(&inf, &def);
- if (ret == Z_MEM_ERROR)
- quit("out of memory");
-
- /* set up for next reocmpression */
- ret = inflateReset(&inf);
- assert(ret != Z_STREAM_ERROR);
- ret = deflateReset(&def);
- assert(ret != Z_STREAM_ERROR);
-
- /* do second and final recompression (third compression) */
- inf.avail_in = size - MARGIN; /* assure stream will complete */
- inf.next_in = tmp;
- def.avail_out = size;
- def.next_out = blk;
- ret = recompress(&inf, &def);
- if (ret == Z_MEM_ERROR)
- quit("out of memory");
- assert(ret == Z_STREAM_END); /* otherwise MARGIN too small */
-
- /* done -- write block to stdout */
- have = size - def.avail_out;
- if (fwrite(blk, 1, have, stdout) != have || ferror(stdout))
- quit("error writing output");
-
- /* clean up and print results to stderr */
- free(tmp);
- ret = inflateEnd(&inf);
- assert(ret != Z_STREAM_ERROR);
- ret = deflateEnd(&def);
- assert(ret != Z_STREAM_ERROR);
- free(blk);
- fprintf(stderr,
- "%u bytes unused out of %u requested (%lu input)\n",
- size - have, size, def.total_in);
- return 0;
-}
+++ /dev/null
-/* gun.c -- simple gunzip to give an example of the use of inflateBack()
- * Copyright (C) 2003, 2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- Version 1.3 12 June 2005 Mark Adler */
-
-/* Version history:
- 1.0 16 Feb 2003 First version for testing of inflateBack()
- 1.1 21 Feb 2005 Decompress concatenated gzip streams
- Remove use of "this" variable (C++ keyword)
- Fix return value for in()
- Improve allocation failure checking
- Add typecasting for void * structures
- Add -h option for command version and usage
- Add a bunch of comments
- 1.2 20 Mar 2005 Add Unix compress (LZW) decompression
- Copy file attributes from input file to output file
- 1.3 12 Jun 2005 Add casts for error messages [Oberhumer]
- */
-
-/*
- gun [ -t ] [ name ... ]
-
- decompresses the data in the named gzip files. If no arguments are given,
- gun will decompress from stdin to stdout. The names must end in .gz, -gz,
- .z, -z, _z, or .Z. The uncompressed data will be written to a file name
- with the suffix stripped. On success, the original file is deleted. On
- failure, the output file is deleted. For most failures, the command will
- continue to process the remaining names on the command line. A memory
- allocation failure will abort the command. If -t is specified, then the
- listed files or stdin will be tested as gzip files for integrity (without
- checking for a proper suffix), no output will be written, and no files
- will be deleted.
-
- Like gzip, gun allows concatenated gzip streams and will decompress them,
- writing all of the uncompressed data to the output. Unlike gzip, gun allows
- an empty file on input, and will produce no error writing an empty output
- file.
-
- gun will also decompress files made by Unix compress, which uses LZW
- compression. These files are automatically detected by virtue of their
- magic header bytes. Since the end of Unix compress stream is marked by the
- end-of-file, they cannot be concantenated. If a Unix compress stream is
- encountered in an input file, it is the last stream in that file.
-
- Like gunzip and uncompress, the file attributes of the original compressed
- file are maintained in the final uncompressed file, to the extent that the
- user permissions allow it.
-
- On my Mac OS X PowerPC G4, gun is almost twice as fast as gunzip (version
- 1.2.4) is on the same file, when gun is linked with zlib 1.2.2. Also the
- LZW decompression provided by gun is about twice as fast as the standard
- Unix uncompress command.
- */
-
-/* external functions and related types and constants */
-#include <stdio.h> /* fprintf() */
-#include <stdlib.h> /* malloc(), free() */
-#include <string.h> /* strerror(), strcmp(), strlen(), memcpy() */
-#include <errno.h> /* errno */
-#include <fcntl.h> /* open() */
-#include <unistd.h> /* read(), write(), close(), chown(), unlink() */
-#include <sys/types.h>
-#include <sys/stat.h> /* stat(), chmod() */
-#include <utime.h> /* utime() */
-#include "zlib.h" /* inflateBackInit(), inflateBack(), */
- /* inflateBackEnd(), crc32() */
-
-/* function declaration */
-#define local static
-
-/* buffer constants */
-#define SIZE 32768U /* input and output buffer sizes */
-#define PIECE 16384 /* limits i/o chunks for 16-bit int case */
-
-/* structure for infback() to pass to input function in() -- it maintains the
- input file and a buffer of size SIZE */
-struct ind {
- int infile;
- unsigned char *inbuf;
-};
-
-/* Load input buffer, assumed to be empty, and return bytes loaded and a
- pointer to them. read() is called until the buffer is full, or until it
- returns end-of-file or error. Return 0 on error. */
-local unsigned in(void *in_desc, unsigned char **buf)
-{
- int ret;
- unsigned len;
- unsigned char *next;
- struct ind *me = (struct ind *)in_desc;
-
- next = me->inbuf;
- *buf = next;
- len = 0;
- do {
- ret = PIECE;
- if ((unsigned)ret > SIZE - len)
- ret = (int)(SIZE - len);
- ret = (int)read(me->infile, next, ret);
- if (ret == -1) {
- len = 0;
- break;
- }
- next += ret;
- len += ret;
- } while (ret != 0 && len < SIZE);
- return len;
-}
-
-/* structure for infback() to pass to output function out() -- it maintains the
- output file, a running CRC-32 check on the output and the total number of
- bytes output, both for checking against the gzip trailer. (The length in
- the gzip trailer is stored modulo 2^32, so it's ok if a long is 32 bits and
- the output is greater than 4 GB.) */
-struct outd {
- int outfile;
- int check; /* true if checking crc and total */
- unsigned long crc;
- unsigned long total;
-};
-
-/* Write output buffer and update the CRC-32 and total bytes written. write()
- is called until all of the output is written or an error is encountered.
- On success out() returns 0. For a write failure, out() returns 1. If the
- output file descriptor is -1, then nothing is written.
- */
-local int out(void *out_desc, unsigned char *buf, unsigned len)
-{
- int ret;
- struct outd *me = (struct outd *)out_desc;
-
- if (me->check) {
- me->crc = crc32(me->crc, buf, len);
- me->total += len;
- }
- if (me->outfile != -1)
- do {
- ret = PIECE;
- if ((unsigned)ret > len)
- ret = (int)len;
- ret = (int)write(me->outfile, buf, ret);
- if (ret == -1)
- return 1;
- buf += ret;
- len -= ret;
- } while (len != 0);
- return 0;
-}
-
-/* next input byte macro for use inside lunpipe() and gunpipe() */
-#define NEXT() (have ? 0 : (have = in(indp, &next)), \
- last = have ? (have--, (int)(*next++)) : -1)
-
-/* memory for gunpipe() and lunpipe() --
- the first 256 entries of prefix[] and suffix[] are never used, could
- have offset the index, but it's faster to waste the memory */
-unsigned char inbuf[SIZE]; /* input buffer */
-unsigned char outbuf[SIZE]; /* output buffer */
-unsigned short prefix[65536]; /* index to LZW prefix string */
-unsigned char suffix[65536]; /* one-character LZW suffix */
-unsigned char match[65280 + 2]; /* buffer for reversed match or gzip
- 32K sliding window */
-
-/* throw out what's left in the current bits byte buffer (this is a vestigial
- aspect of the compressed data format derived from an implementation that
- made use of a special VAX machine instruction!) */
-#define FLUSHCODE() \
- do { \
- left = 0; \
- rem = 0; \
- if (chunk > have) { \
- chunk -= have; \
- have = 0; \
- if (NEXT() == -1) \
- break; \
- chunk--; \
- if (chunk > have) { \
- chunk = have = 0; \
- break; \
- } \
- } \
- have -= chunk; \
- next += chunk; \
- chunk = 0; \
- } while (0)
-
-/* Decompress a compress (LZW) file from indp to outfile. The compress magic
- header (two bytes) has already been read and verified. There are have bytes
- of buffered input at next. strm is used for passing error information back
- to gunpipe().
-
- lunpipe() will return Z_OK on success, Z_BUF_ERROR for an unexpected end of
- file, read error, or write error (a write error indicated by strm->next_in
- not equal to Z_NULL), or Z_DATA_ERROR for invalid input.
- */
-local int lunpipe(unsigned have, unsigned char *next, struct ind *indp,
- int outfile, z_stream *strm)
-{
- int last; /* last byte read by NEXT(), or -1 if EOF */
- int chunk; /* bytes left in current chunk */
- int left; /* bits left in rem */
- unsigned rem; /* unused bits from input */
- int bits; /* current bits per code */
- unsigned code; /* code, table traversal index */
- unsigned mask; /* mask for current bits codes */
- int max; /* maximum bits per code for this stream */
- int flags; /* compress flags, then block compress flag */
- unsigned end; /* last valid entry in prefix/suffix tables */
- unsigned temp; /* current code */
- unsigned prev; /* previous code */
- unsigned final; /* last character written for previous code */
- unsigned stack; /* next position for reversed string */
- unsigned outcnt; /* bytes in output buffer */
- struct outd outd; /* output structure */
-
- /* set up output */
- outd.outfile = outfile;
- outd.check = 0;
-
- /* process remainder of compress header -- a flags byte */
- flags = NEXT();
- if (last == -1)
- return Z_BUF_ERROR;
- if (flags & 0x60) {
- strm->msg = (char *)"unknown lzw flags set";
- return Z_DATA_ERROR;
- }
- max = flags & 0x1f;
- if (max < 9 || max > 16) {
- strm->msg = (char *)"lzw bits out of range";
- return Z_DATA_ERROR;
- }
- if (max == 9) /* 9 doesn't really mean 9 */
- max = 10;
- flags &= 0x80; /* true if block compress */
-
- /* clear table */
- bits = 9;
- mask = 0x1ff;
- end = flags ? 256 : 255;
-
- /* set up: get first 9-bit code, which is the first decompressed byte, but
- don't create a table entry until the next code */
- if (NEXT() == -1) /* no compressed data is ok */
- return Z_OK;
- final = prev = (unsigned)last; /* low 8 bits of code */
- if (NEXT() == -1) /* missing a bit */
- return Z_BUF_ERROR;
- if (last & 1) { /* code must be < 256 */
- strm->msg = (char *)"invalid lzw code";
- return Z_DATA_ERROR;
- }
- rem = (unsigned)last >> 1; /* remaining 7 bits */
- left = 7;
- chunk = bits - 2; /* 7 bytes left in this chunk */
- outbuf[0] = (unsigned char)final; /* write first decompressed byte */
- outcnt = 1;
-
- /* decode codes */
- stack = 0;
- for (;;) {
- /* if the table will be full after this, increment the code size */
- if (end >= mask && bits < max) {
- FLUSHCODE();
- bits++;
- mask <<= 1;
- mask++;
- }
-
- /* get a code of length bits */
- if (chunk == 0) /* decrement chunk modulo bits */
- chunk = bits;
- code = rem; /* low bits of code */
- if (NEXT() == -1) { /* EOF is end of compressed data */
- /* write remaining buffered output */
- if (outcnt && out(&outd, outbuf, outcnt)) {
- strm->next_in = outbuf; /* signal write error */
- return Z_BUF_ERROR;
- }
- return Z_OK;
- }
- code += (unsigned)last << left; /* middle (or high) bits of code */
- left += 8;
- chunk--;
- if (bits > left) { /* need more bits */
- if (NEXT() == -1) /* can't end in middle of code */
- return Z_BUF_ERROR;
- code += (unsigned)last << left; /* high bits of code */
- left += 8;
- chunk--;
- }
- code &= mask; /* mask to current code length */
- left -= bits; /* number of unused bits */
- rem = (unsigned)last >> (8 - left); /* unused bits from last byte */
-
- /* process clear code (256) */
- if (code == 256 && flags) {
- FLUSHCODE();
- bits = 9; /* initialize bits and mask */
- mask = 0x1ff;
- end = 255; /* empty table */
- continue; /* get next code */
- }
-
- /* special code to reuse last match */
- temp = code; /* save the current code */
- if (code > end) {
- /* Be picky on the allowed code here, and make sure that the code
- we drop through (prev) will be a valid index so that random
- input does not cause an exception. The code != end + 1 check is
- empirically derived, and not checked in the original uncompress
- code. If this ever causes a problem, that check could be safely
- removed. Leaving this check in greatly improves gun's ability
- to detect random or corrupted input after a compress header.
- In any case, the prev > end check must be retained. */
- if (code != end + 1 || prev > end) {
- strm->msg = (char *)"invalid lzw code";
- return Z_DATA_ERROR;
- }
- match[stack++] = (unsigned char)final;
- code = prev;
- }
-
- /* walk through linked list to generate output in reverse order */
- while (code >= 256) {
- match[stack++] = suffix[code];
- code = prefix[code];
- }
- match[stack++] = (unsigned char)code;
- final = code;
-
- /* link new table entry */
- if (end < mask) {
- end++;
- prefix[end] = (unsigned short)prev;
- suffix[end] = (unsigned char)final;
- }
-
- /* set previous code for next iteration */
- prev = temp;
-
- /* write output in forward order */
- while (stack > SIZE - outcnt) {
- while (outcnt < SIZE)
- outbuf[outcnt++] = match[--stack];
- if (out(&outd, outbuf, outcnt)) {
- strm->next_in = outbuf; /* signal write error */
- return Z_BUF_ERROR;
- }
- outcnt = 0;
- }
- do {
- outbuf[outcnt++] = match[--stack];
- } while (stack);
-
- /* loop for next code with final and prev as the last match, rem and
- left provide the first 0..7 bits of the next code, end is the last
- valid table entry */
- }
-}
-
-/* Decompress a gzip file from infile to outfile. strm is assumed to have been
- successfully initialized with inflateBackInit(). The input file may consist
- of a series of gzip streams, in which case all of them will be decompressed
- to the output file. If outfile is -1, then the gzip stream(s) integrity is
- checked and nothing is written.
-
- The return value is a zlib error code: Z_MEM_ERROR if out of memory,
- Z_DATA_ERROR if the header or the compressed data is invalid, or if the
- trailer CRC-32 check or length doesn't match, Z_BUF_ERROR if the input ends
- prematurely or a write error occurs, or Z_ERRNO if junk (not a another gzip
- stream) follows a valid gzip stream.
- */
-local int gunpipe(z_stream *strm, int infile, int outfile)
-{
- int ret, first, last;
- unsigned have, flags, len;
- unsigned char *next;
- struct ind ind, *indp;
- struct outd outd;
-
- /* setup input buffer */
- ind.infile = infile;
- ind.inbuf = inbuf;
- indp = &ind;
-
- /* decompress concatenated gzip streams */
- have = 0; /* no input data read in yet */
- first = 1; /* looking for first gzip header */
- strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */
- for (;;) {
- /* look for the two magic header bytes for a gzip stream */
- if (NEXT() == -1) {
- ret = Z_OK;
- break; /* empty gzip stream is ok */
- }
- if (last != 31 || (NEXT() != 139 && last != 157)) {
- strm->msg = (char *)"incorrect header check";
- ret = first ? Z_DATA_ERROR : Z_ERRNO;
- break; /* not a gzip or compress header */
- }
- first = 0; /* next non-header is junk */
-
- /* process a compress (LZW) file -- can't be concatenated after this */
- if (last == 157) {
- ret = lunpipe(have, next, indp, outfile, strm);
- break;
- }
-
- /* process remainder of gzip header */
- ret = Z_BUF_ERROR;
- if (NEXT() != 8) { /* only deflate method allowed */
- if (last == -1) break;
- strm->msg = (char *)"unknown compression method";
- ret = Z_DATA_ERROR;
- break;
- }
- flags = NEXT(); /* header flags */
- NEXT(); /* discard mod time, xflgs, os */
- NEXT();
- NEXT();
- NEXT();
- NEXT();
- NEXT();
- if (last == -1) break;
- if (flags & 0xe0) {
- strm->msg = (char *)"unknown header flags set";
- ret = Z_DATA_ERROR;
- break;
- }
- if (flags & 4) { /* extra field */
- len = NEXT();
- len += (unsigned)(NEXT()) << 8;
- if (last == -1) break;
- while (len > have) {
- len -= have;
- have = 0;
- if (NEXT() == -1) break;
- len--;
- }
- if (last == -1) break;
- have -= len;
- next += len;
- }
- if (flags & 8) /* file name */
- while (NEXT() != 0 && last != -1)
- ;
- if (flags & 16) /* comment */
- while (NEXT() != 0 && last != -1)
- ;
- if (flags & 2) { /* header crc */
- NEXT();
- NEXT();
- }
- if (last == -1) break;
-
- /* set up output */
- outd.outfile = outfile;
- outd.check = 1;
- outd.crc = crc32(0L, Z_NULL, 0);
- outd.total = 0;
-
- /* decompress data to output */
- strm->next_in = next;
- strm->avail_in = have;
- ret = inflateBack(strm, in, indp, out, &outd);
- if (ret != Z_STREAM_END) break;
- next = strm->next_in;
- have = strm->avail_in;
- strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */
-
- /* check trailer */
- ret = Z_BUF_ERROR;
- if (NEXT() != (outd.crc & 0xff) ||
- NEXT() != ((outd.crc >> 8) & 0xff) ||
- NEXT() != ((outd.crc >> 16) & 0xff) ||
- NEXT() != ((outd.crc >> 24) & 0xff)) {
- /* crc error */
- if (last != -1) {
- strm->msg = (char *)"incorrect data check";
- ret = Z_DATA_ERROR;
- }
- break;
- }
- if (NEXT() != (outd.total & 0xff) ||
- NEXT() != ((outd.total >> 8) & 0xff) ||
- NEXT() != ((outd.total >> 16) & 0xff) ||
- NEXT() != ((outd.total >> 24) & 0xff)) {
- /* length error */
- if (last != -1) {
- strm->msg = (char *)"incorrect length check";
- ret = Z_DATA_ERROR;
- }
- break;
- }
-
- /* go back and look for another gzip stream */
- }
-
- /* clean up and return */
- return ret;
-}
-
-/* Copy file attributes, from -> to, as best we can. This is best effort, so
- no errors are reported. The mode bits, including suid, sgid, and the sticky
- bit are copied (if allowed), the owner's user id and group id are copied
- (again if allowed), and the access and modify times are copied. */
-local void copymeta(char *from, char *to)
-{
- struct stat was;
- struct utimbuf when;
-
- /* get all of from's Unix meta data, return if not a regular file */
- if (stat(from, &was) != 0 || (was.st_mode & S_IFMT) != S_IFREG)
- return;
-
- /* set to's mode bits, ignore errors */
- (void)chmod(to, was.st_mode & 07777);
-
- /* copy owner's user and group, ignore errors */
- (void)chown(to, was.st_uid, was.st_gid);
-
- /* copy access and modify times, ignore errors */
- when.actime = was.st_atime;
- when.modtime = was.st_mtime;
- (void)utime(to, &when);
-}
-
-/* Decompress the file inname to the file outnname, of if test is true, just
- decompress without writing and check the gzip trailer for integrity. If
- inname is NULL or an empty string, read from stdin. If outname is NULL or
- an empty string, write to stdout. strm is a pre-initialized inflateBack
- structure. When appropriate, copy the file attributes from inname to
- outname.
-
- gunzip() returns 1 if there is an out-of-memory error or an unexpected
- return code from gunpipe(). Otherwise it returns 0.
- */
-local int gunzip(z_stream *strm, char *inname, char *outname, int test)
-{
- int ret;
- int infile, outfile;
-
- /* open files */
- if (inname == NULL || *inname == 0) {
- inname = "-";
- infile = 0; /* stdin */
- }
- else {
- infile = open(inname, O_RDONLY, 0);
- if (infile == -1) {
- fprintf(stderr, "gun cannot open %s\n", inname);
- return 0;
- }
- }
- if (test)
- outfile = -1;
- else if (outname == NULL || *outname == 0) {
- outname = "-";
- outfile = 1; /* stdout */
- }
- else {
- outfile = open(outname, O_CREAT | O_TRUNC | O_WRONLY, 0666);
- if (outfile == -1) {
- close(infile);
- fprintf(stderr, "gun cannot create %s\n", outname);
- return 0;
- }
- }
- errno = 0;
-
- /* decompress */
- ret = gunpipe(strm, infile, outfile);
- if (outfile > 2) close(outfile);
- if (infile > 2) close(infile);
-
- /* interpret result */
- switch (ret) {
- case Z_OK:
- case Z_ERRNO:
- if (infile > 2 && outfile > 2) {
- copymeta(inname, outname); /* copy attributes */
- unlink(inname);
- }
- if (ret == Z_ERRNO)
- fprintf(stderr, "gun warning: trailing garbage ignored in %s\n",
- inname);
- break;
- case Z_DATA_ERROR:
- if (outfile > 2) unlink(outname);
- fprintf(stderr, "gun data error on %s: %s\n", inname, strm->msg);
- break;
- case Z_MEM_ERROR:
- if (outfile > 2) unlink(outname);
- fprintf(stderr, "gun out of memory error--aborting\n");
- return 1;
- case Z_BUF_ERROR:
- if (outfile > 2) unlink(outname);
- if (strm->next_in != Z_NULL) {
- fprintf(stderr, "gun write error on %s: %s\n",
- outname, strerror(errno));
- }
- else if (errno) {
- fprintf(stderr, "gun read error on %s: %s\n",
- inname, strerror(errno));
- }
- else {
- fprintf(stderr, "gun unexpected end of file on %s\n",
- inname);
- }
- break;
- default:
- if (outfile > 2) unlink(outname);
- fprintf(stderr, "gun internal error--aborting\n");
- return 1;
- }
- return 0;
-}
-
-/* Process the gun command line arguments. See the command syntax near the
- beginning of this source file. */
-int main(int argc, char **argv)
-{
- int ret, len, test;
- char *outname;
- unsigned char *window;
- z_stream strm;
-
- /* initialize inflateBack state for repeated use */
- window = match; /* reuse LZW match buffer */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- ret = inflateBackInit(&strm, 15, window);
- if (ret != Z_OK) {
- fprintf(stderr, "gun out of memory error--aborting\n");
- return 1;
- }
-
- /* decompress each file to the same name with the suffix removed */
- argc--;
- argv++;
- test = 0;
- if (argc && strcmp(*argv, "-h") == 0) {
- fprintf(stderr, "gun 1.3 (12 Jun 2005)\n");
- fprintf(stderr, "Copyright (c) 2005 Mark Adler\n");
- fprintf(stderr, "usage: gun [-t] [file1.gz [file2.Z ...]]\n");
- return 0;
- }
- if (argc && strcmp(*argv, "-t") == 0) {
- test = 1;
- argc--;
- argv++;
- }
- if (argc)
- do {
- if (test)
- outname = NULL;
- else {
- len = (int)strlen(*argv);
- if (strcmp(*argv + len - 3, ".gz") == 0 ||
- strcmp(*argv + len - 3, "-gz") == 0)
- len -= 3;
- else if (strcmp(*argv + len - 2, ".z") == 0 ||
- strcmp(*argv + len - 2, "-z") == 0 ||
- strcmp(*argv + len - 2, "_z") == 0 ||
- strcmp(*argv + len - 2, ".Z") == 0)
- len -= 2;
- else {
- fprintf(stderr, "gun error: no gz type on %s--skipping\n",
- *argv);
- continue;
- }
- outname = malloc(len + 1);
- if (outname == NULL) {
- fprintf(stderr, "gun out of memory error--aborting\n");
- ret = 1;
- break;
- }
- memcpy(outname, *argv, len);
- outname[len] = 0;
- }
- ret = gunzip(&strm, *argv, outname, test);
- if (outname != NULL) free(outname);
- if (ret) break;
- } while (argv++, --argc);
- else
- ret = gunzip(&strm, NULL, NULL, test);
-
- /* clean up */
- inflateBackEnd(&strm);
- return ret;
-}
+++ /dev/null
-/* gzappend -- command to append to a gzip file
-
- Copyright (C) 2003 Mark Adler, all rights reserved
- version 1.1, 4 Nov 2003
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Mark Adler madler@alumni.caltech.edu
- */
-
-/*
- * Change history:
- *
- * 1.0 19 Oct 2003 - First version
- * 1.1 4 Nov 2003 - Expand and clarify some comments and notes
- * - Add version and copyright to help
- * - Send help to stdout instead of stderr
- * - Add some preemptive typecasts
- * - Add L to constants in lseek() calls
- * - Remove some debugging information in error messages
- * - Use new data_type definition for zlib 1.2.1
- * - Simplfy and unify file operations
- * - Finish off gzip file in gztack()
- * - Use deflatePrime() instead of adding empty blocks
- * - Keep gzip file clean on appended file read errors
- * - Use in-place rotate instead of auxiliary buffer
- * (Why you ask? Because it was fun to write!)
- */
-
-/*
- gzappend takes a gzip file and appends to it, compressing files from the
- command line or data from stdin. The gzip file is written to directly, to
- avoid copying that file, in case it's large. Note that this results in the
- unfriendly behavior that if gzappend fails, the gzip file is corrupted.
-
- This program was written to illustrate the use of the new Z_BLOCK option of
- zlib 1.2.x's inflate() function. This option returns from inflate() at each
- block boundary to facilitate locating and modifying the last block bit at
- the start of the final deflate block. Also whether using Z_BLOCK or not,
- another required feature of zlib 1.2.x is that inflate() now provides the
- number of unusued bits in the last input byte used. gzappend will not work
- with versions of zlib earlier than 1.2.1.
-
- gzappend first decompresses the gzip file internally, discarding all but
- the last 32K of uncompressed data, and noting the location of the last block
- bit and the number of unused bits in the last byte of the compressed data.
- The gzip trailer containing the CRC-32 and length of the uncompressed data
- is verified. This trailer will be later overwritten.
-
- Then the last block bit is cleared by seeking back in the file and rewriting
- the byte that contains it. Seeking forward, the last byte of the compressed
- data is saved along with the number of unused bits to initialize deflate.
-
- A deflate process is initialized, using the last 32K of the uncompressed
- data from the gzip file to initialize the dictionary. If the total
- uncompressed data was less than 32K, then all of it is used to initialize
- the dictionary. The deflate output bit buffer is also initialized with the
- last bits from the original deflate stream. From here on, the data to
- append is simply compressed using deflate, and written to the gzip file.
- When that is complete, the new CRC-32 and uncompressed length are written
- as the trailer of the gzip file.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include "zlib.h"
-
-#define local static
-#define LGCHUNK 14
-#define CHUNK (1U << LGCHUNK)
-#define DSIZE 32768U
-
-/* print an error message and terminate with extreme prejudice */
-local void bye(char *msg1, char *msg2)
-{
- fprintf(stderr, "gzappend error: %s%s\n", msg1, msg2);
- exit(1);
-}
-
-/* return the greatest common divisor of a and b using Euclid's algorithm,
- modified to be fast when one argument much greater than the other, and
- coded to avoid unnecessary swapping */
-local unsigned gcd(unsigned a, unsigned b)
-{
- unsigned c;
-
- while (a && b)
- if (a > b) {
- c = b;
- while (a - c >= c)
- c <<= 1;
- a -= c;
- }
- else {
- c = a;
- while (b - c >= c)
- c <<= 1;
- b -= c;
- }
- return a + b;
-}
-
-/* rotate list[0..len-1] left by rot positions, in place */
-local void rotate(unsigned char *list, unsigned len, unsigned rot)
-{
- unsigned char tmp;
- unsigned cycles;
- unsigned char *start, *last, *to, *from;
-
- /* normalize rot and handle degenerate cases */
- if (len < 2) return;
- if (rot >= len) rot %= len;
- if (rot == 0) return;
-
- /* pointer to last entry in list */
- last = list + (len - 1);
-
- /* do simple left shift by one */
- if (rot == 1) {
- tmp = *list;
- memcpy(list, list + 1, len - 1);
- *last = tmp;
- return;
- }
-
- /* do simple right shift by one */
- if (rot == len - 1) {
- tmp = *last;
- memmove(list + 1, list, len - 1);
- *list = tmp;
- return;
- }
-
- /* otherwise do rotate as a set of cycles in place */
- cycles = gcd(len, rot); /* number of cycles */
- do {
- start = from = list + cycles; /* start index is arbitrary */
- tmp = *from; /* save entry to be overwritten */
- for (;;) {
- to = from; /* next step in cycle */
- from += rot; /* go right rot positions */
- if (from > last) from -= len; /* (pointer better not wrap) */
- if (from == start) break; /* all but one shifted */
- *to = *from; /* shift left */
- }
- *to = tmp; /* complete the circle */
- } while (--cycles);
-}
-
-/* structure for gzip file read operations */
-typedef struct {
- int fd; /* file descriptor */
- int size; /* 1 << size is bytes in buf */
- unsigned left; /* bytes available at next */
- unsigned char *buf; /* buffer */
- unsigned char *next; /* next byte in buffer */
- char *name; /* file name for error messages */
-} file;
-
-/* reload buffer */
-local int readin(file *in)
-{
- int len;
-
- len = read(in->fd, in->buf, 1 << in->size);
- if (len == -1) bye("error reading ", in->name);
- in->left = (unsigned)len;
- in->next = in->buf;
- return len;
-}
-
-/* read from file in, exit if end-of-file */
-local int readmore(file *in)
-{
- if (readin(in) == 0) bye("unexpected end of ", in->name);
- return 0;
-}
-
-#define read1(in) (in->left == 0 ? readmore(in) : 0, \
- in->left--, *(in->next)++)
-
-/* skip over n bytes of in */
-local void skip(file *in, unsigned n)
-{
- unsigned bypass;
-
- if (n > in->left) {
- n -= in->left;
- bypass = n & ~((1U << in->size) - 1);
- if (bypass) {
- if (lseek(in->fd, (off_t)bypass, SEEK_CUR) == -1)
- bye("seeking ", in->name);
- n -= bypass;
- }
- readmore(in);
- if (n > in->left)
- bye("unexpected end of ", in->name);
- }
- in->left -= n;
- in->next += n;
-}
-
-/* read a four-byte unsigned integer, little-endian, from in */
-unsigned long read4(file *in)
-{
- unsigned long val;
-
- val = read1(in);
- val += (unsigned)read1(in) << 8;
- val += (unsigned long)read1(in) << 16;
- val += (unsigned long)read1(in) << 24;
- return val;
-}
-
-/* skip over gzip header */
-local void gzheader(file *in)
-{
- int flags;
- unsigned n;
-
- if (read1(in) != 31 || read1(in) != 139) bye(in->name, " not a gzip file");
- if (read1(in) != 8) bye("unknown compression method in", in->name);
- flags = read1(in);
- if (flags & 0xe0) bye("unknown header flags set in", in->name);
- skip(in, 6);
- if (flags & 4) {
- n = read1(in);
- n += (unsigned)(read1(in)) << 8;
- skip(in, n);
- }
- if (flags & 8) while (read1(in) != 0) ;
- if (flags & 16) while (read1(in) != 0) ;
- if (flags & 2) skip(in, 2);
-}
-
-/* decompress gzip file "name", return strm with a deflate stream ready to
- continue compression of the data in the gzip file, and return a file
- descriptor pointing to where to write the compressed data -- the deflate
- stream is initialized to compress using level "level" */
-local int gzscan(char *name, z_stream *strm, int level)
-{
- int ret, lastbit, left, full;
- unsigned have;
- unsigned long crc, tot;
- unsigned char *window;
- off_t lastoff, end;
- file gz;
-
- /* open gzip file */
- gz.name = name;
- gz.fd = open(name, O_RDWR, 0);
- if (gz.fd == -1) bye("cannot open ", name);
- gz.buf = malloc(CHUNK);
- if (gz.buf == NULL) bye("out of memory", "");
- gz.size = LGCHUNK;
- gz.left = 0;
-
- /* skip gzip header */
- gzheader(&gz);
-
- /* prepare to decompress */
- window = malloc(DSIZE);
- if (window == NULL) bye("out of memory", "");
- strm->zalloc = Z_NULL;
- strm->zfree = Z_NULL;
- strm->opaque = Z_NULL;
- ret = inflateInit2(strm, -15);
- if (ret != Z_OK) bye("out of memory", " or library mismatch");
-
- /* decompress the deflate stream, saving append information */
- lastbit = 0;
- lastoff = lseek(gz.fd, 0L, SEEK_CUR) - gz.left;
- left = 0;
- strm->avail_in = gz.left;
- strm->next_in = gz.next;
- crc = crc32(0L, Z_NULL, 0);
- have = full = 0;
- do {
- /* if needed, get more input */
- if (strm->avail_in == 0) {
- readmore(&gz);
- strm->avail_in = gz.left;
- strm->next_in = gz.next;
- }
-
- /* set up output to next available section of sliding window */
- strm->avail_out = DSIZE - have;
- strm->next_out = window + have;
-
- /* inflate and check for errors */
- ret = inflate(strm, Z_BLOCK);
- if (ret == Z_STREAM_ERROR) bye("internal stream error!", "");
- if (ret == Z_MEM_ERROR) bye("out of memory", "");
- if (ret == Z_DATA_ERROR)
- bye("invalid compressed data--format violated in", name);
-
- /* update crc and sliding window pointer */
- crc = crc32(crc, window + have, DSIZE - have - strm->avail_out);
- if (strm->avail_out)
- have = DSIZE - strm->avail_out;
- else {
- have = 0;
- full = 1;
- }
-
- /* process end of block */
- if (strm->data_type & 128) {
- if (strm->data_type & 64)
- left = strm->data_type & 0x1f;
- else {
- lastbit = strm->data_type & 0x1f;
- lastoff = lseek(gz.fd, 0L, SEEK_CUR) - strm->avail_in;
- }
- }
- } while (ret != Z_STREAM_END);
- inflateEnd(strm);
- gz.left = strm->avail_in;
- gz.next = strm->next_in;
-
- /* save the location of the end of the compressed data */
- end = lseek(gz.fd, 0L, SEEK_CUR) - gz.left;
-
- /* check gzip trailer and save total for deflate */
- if (crc != read4(&gz))
- bye("invalid compressed data--crc mismatch in ", name);
- tot = strm->total_out;
- if ((tot & 0xffffffffUL) != read4(&gz))
- bye("invalid compressed data--length mismatch in", name);
-
- /* if not at end of file, warn */
- if (gz.left || readin(&gz))
- fprintf(stderr,
- "gzappend warning: junk at end of gzip file overwritten\n");
-
- /* clear last block bit */
- lseek(gz.fd, lastoff - (lastbit != 0), SEEK_SET);
- if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name);
- *gz.buf = (unsigned char)(*gz.buf ^ (1 << ((8 - lastbit) & 7)));
- lseek(gz.fd, -1L, SEEK_CUR);
- if (write(gz.fd, gz.buf, 1) != 1) bye("writing after seek to ", name);
-
- /* if window wrapped, build dictionary from window by rotating */
- if (full) {
- rotate(window, DSIZE, have);
- have = DSIZE;
- }
-
- /* set up deflate stream with window, crc, total_in, and leftover bits */
- ret = deflateInit2(strm, level, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY);
- if (ret != Z_OK) bye("out of memory", "");
- deflateSetDictionary(strm, window, have);
- strm->adler = crc;
- strm->total_in = tot;
- if (left) {
- lseek(gz.fd, --end, SEEK_SET);
- if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name);
- deflatePrime(strm, 8 - left, *gz.buf);
- }
- lseek(gz.fd, end, SEEK_SET);
-
- /* clean up and return */
- free(window);
- free(gz.buf);
- return gz.fd;
-}
-
-/* append file "name" to gzip file gd using deflate stream strm -- if last
- is true, then finish off the deflate stream at the end */
-local void gztack(char *name, int gd, z_stream *strm, int last)
-{
- int fd, len, ret;
- unsigned left;
- unsigned char *in, *out;
-
- /* open file to compress and append */
- fd = 0;
- if (name != NULL) {
- fd = open(name, O_RDONLY, 0);
- if (fd == -1)
- fprintf(stderr, "gzappend warning: %s not found, skipping ...\n",
- name);
- }
-
- /* allocate buffers */
- in = fd == -1 ? NULL : malloc(CHUNK);
- out = malloc(CHUNK);
- if (out == NULL) bye("out of memory", "");
-
- /* compress input file and append to gzip file */
- do {
- /* get more input */
- len = fd == -1 ? 0 : read(fd, in, CHUNK);
- if (len == -1) {
- fprintf(stderr,
- "gzappend warning: error reading %s, skipping rest ...\n",
- name);
- len = 0;
- }
- strm->avail_in = (unsigned)len;
- strm->next_in = in;
- if (len) strm->adler = crc32(strm->adler, in, (unsigned)len);
-
- /* compress and write all available output */
- do {
- strm->avail_out = CHUNK;
- strm->next_out = out;
- ret = deflate(strm, last && len == 0 ? Z_FINISH : Z_NO_FLUSH);
- left = CHUNK - strm->avail_out;
- while (left) {
- len = write(gd, out + CHUNK - strm->avail_out - left, left);
- if (len == -1) bye("writing gzip file", "");
- left -= (unsigned)len;
- }
- } while (strm->avail_out == 0 && ret != Z_STREAM_END);
- } while (len != 0);
-
- /* write trailer after last entry */
- if (last) {
- deflateEnd(strm);
- out[0] = (unsigned char)(strm->adler);
- out[1] = (unsigned char)(strm->adler >> 8);
- out[2] = (unsigned char)(strm->adler >> 16);
- out[3] = (unsigned char)(strm->adler >> 24);
- out[4] = (unsigned char)(strm->total_in);
- out[5] = (unsigned char)(strm->total_in >> 8);
- out[6] = (unsigned char)(strm->total_in >> 16);
- out[7] = (unsigned char)(strm->total_in >> 24);
- len = 8;
- do {
- ret = write(gd, out + 8 - len, len);
- if (ret == -1) bye("writing gzip file", "");
- len -= ret;
- } while (len);
- close(gd);
- }
-
- /* clean up and return */
- free(out);
- if (in != NULL) free(in);
- if (fd > 0) close(fd);
-}
-
-/* process the compression level option if present, scan the gzip file, and
- append the specified files, or append the data from stdin if no other file
- names are provided on the command line -- the gzip file must be writable
- and seekable */
-int main(int argc, char **argv)
-{
- int gd, level;
- z_stream strm;
-
- /* ignore command name */
- argv++;
-
- /* provide usage if no arguments */
- if (*argv == NULL) {
- printf("gzappend 1.1 (4 Nov 2003) Copyright (C) 2003 Mark Adler\n");
- printf(
- "usage: gzappend [-level] file.gz [ addthis [ andthis ... ]]\n");
- return 0;
- }
-
- /* set compression level */
- level = Z_DEFAULT_COMPRESSION;
- if (argv[0][0] == '-') {
- if (argv[0][1] < '0' || argv[0][1] > '9' || argv[0][2] != 0)
- bye("invalid compression level", "");
- level = argv[0][1] - '0';
- if (*++argv == NULL) bye("no gzip file name after options", "");
- }
-
- /* prepare to append to gzip file */
- gd = gzscan(*argv++, &strm, level);
-
- /* append files on command line, or from stdin if none */
- if (*argv == NULL)
- gztack(NULL, gd, &strm, 1);
- else
- do {
- gztack(*argv, gd, &strm, argv[1] == NULL);
- } while (*++argv != NULL);
- return 0;
-}
+++ /dev/null
-/* gzjoin -- command to join gzip files into one gzip file
-
- Copyright (C) 2004 Mark Adler, all rights reserved
- version 1.0, 11 Dec 2004
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Mark Adler madler@alumni.caltech.edu
- */
-
-/*
- * Change history:
- *
- * 1.0 11 Dec 2004 - First version
- * 1.1 12 Jun 2005 - Changed ssize_t to long for portability
- */
-
-/*
- gzjoin takes one or more gzip files on the command line and writes out a
- single gzip file that will uncompress to the concatenation of the
- uncompressed data from the individual gzip files. gzjoin does this without
- having to recompress any of the data and without having to calculate a new
- crc32 for the concatenated uncompressed data. gzjoin does however have to
- decompress all of the input data in order to find the bits in the compressed
- data that need to be modified to concatenate the streams.
-
- gzjoin does not do an integrity check on the input gzip files other than
- checking the gzip header and decompressing the compressed data. They are
- otherwise assumed to be complete and correct.
-
- Each joint between gzip files removes at least 18 bytes of previous trailer
- and subsequent header, and inserts an average of about three bytes to the
- compressed data in order to connect the streams. The output gzip file
- has a minimal ten-byte gzip header with no file name or modification time.
-
- This program was written to illustrate the use of the Z_BLOCK option of
- inflate() and the crc32_combine() function. gzjoin will not compile with
- versions of zlib earlier than 1.2.3.
- */
-
-#include <stdio.h> /* fputs(), fprintf(), fwrite(), putc() */
-#include <stdlib.h> /* exit(), malloc(), free() */
-#include <fcntl.h> /* open() */
-#include <unistd.h> /* close(), read(), lseek() */
-#include "zlib.h"
- /* crc32(), crc32_combine(), inflateInit2(), inflate(), inflateEnd() */
-
-#define local static
-
-/* exit with an error (return a value to allow use in an expression) */
-local int bail(char *why1, char *why2)
-{
- fprintf(stderr, "gzjoin error: %s%s, output incomplete\n", why1, why2);
- exit(1);
- return 0;
-}
-
-/* -- simple buffered file input with access to the buffer -- */
-
-#define CHUNK 32768 /* must be a power of two and fit in unsigned */
-
-/* bin buffered input file type */
-typedef struct {
- char *name; /* name of file for error messages */
- int fd; /* file descriptor */
- unsigned left; /* bytes remaining at next */
- unsigned char *next; /* next byte to read */
- unsigned char *buf; /* allocated buffer of length CHUNK */
-} bin;
-
-/* close a buffered file and free allocated memory */
-local void bclose(bin *in)
-{
- if (in != NULL) {
- if (in->fd != -1)
- close(in->fd);
- if (in->buf != NULL)
- free(in->buf);
- free(in);
- }
-}
-
-/* open a buffered file for input, return a pointer to type bin, or NULL on
- failure */
-local bin *bopen(char *name)
-{
- bin *in;
-
- in = malloc(sizeof(bin));
- if (in == NULL)
- return NULL;
- in->buf = malloc(CHUNK);
- in->fd = open(name, O_RDONLY, 0);
- if (in->buf == NULL || in->fd == -1) {
- bclose(in);
- return NULL;
- }
- in->left = 0;
- in->next = in->buf;
- in->name = name;
- return in;
-}
-
-/* load buffer from file, return -1 on read error, 0 or 1 on success, with
- 1 indicating that end-of-file was reached */
-local int bload(bin *in)
-{
- long len;
-
- if (in == NULL)
- return -1;
- if (in->left != 0)
- return 0;
- in->next = in->buf;
- do {
- len = (long)read(in->fd, in->buf + in->left, CHUNK - in->left);
- if (len < 0)
- return -1;
- in->left += (unsigned)len;
- } while (len != 0 && in->left < CHUNK);
- return len == 0 ? 1 : 0;
-}
-
-/* get a byte from the file, bail if end of file */
-#define bget(in) (in->left ? 0 : bload(in), \
- in->left ? (in->left--, *(in->next)++) : \
- bail("unexpected end of file on ", in->name))
-
-/* get a four-byte little-endian unsigned integer from file */
-local unsigned long bget4(bin *in)
-{
- unsigned long val;
-
- val = bget(in);
- val += (unsigned long)(bget(in)) << 8;
- val += (unsigned long)(bget(in)) << 16;
- val += (unsigned long)(bget(in)) << 24;
- return val;
-}
-
-/* skip bytes in file */
-local void bskip(bin *in, unsigned skip)
-{
- /* check pointer */
- if (in == NULL)
- return;
-
- /* easy case -- skip bytes in buffer */
- if (skip <= in->left) {
- in->left -= skip;
- in->next += skip;
- return;
- }
-
- /* skip what's in buffer, discard buffer contents */
- skip -= in->left;
- in->left = 0;
-
- /* seek past multiples of CHUNK bytes */
- if (skip > CHUNK) {
- unsigned left;
-
- left = skip & (CHUNK - 1);
- if (left == 0) {
- /* exact number of chunks: seek all the way minus one byte to check
- for end-of-file with a read */
- lseek(in->fd, skip - 1, SEEK_CUR);
- if (read(in->fd, in->buf, 1) != 1)
- bail("unexpected end of file on ", in->name);
- return;
- }
-
- /* skip the integral chunks, update skip with remainder */
- lseek(in->fd, skip - left, SEEK_CUR);
- skip = left;
- }
-
- /* read more input and skip remainder */
- bload(in);
- if (skip > in->left)
- bail("unexpected end of file on ", in->name);
- in->left -= skip;
- in->next += skip;
-}
-
-/* -- end of buffered input functions -- */
-
-/* skip the gzip header from file in */
-local void gzhead(bin *in)
-{
- int flags;
-
- /* verify gzip magic header and compression method */
- if (bget(in) != 0x1f || bget(in) != 0x8b || bget(in) != 8)
- bail(in->name, " is not a valid gzip file");
-
- /* get and verify flags */
- flags = bget(in);
- if ((flags & 0xe0) != 0)
- bail("unknown reserved bits set in ", in->name);
-
- /* skip modification time, extra flags, and os */
- bskip(in, 6);
-
- /* skip extra field if present */
- if (flags & 4) {
- unsigned len;
-
- len = bget(in);
- len += (unsigned)(bget(in)) << 8;
- bskip(in, len);
- }
-
- /* skip file name if present */
- if (flags & 8)
- while (bget(in) != 0)
- ;
-
- /* skip comment if present */
- if (flags & 16)
- while (bget(in) != 0)
- ;
-
- /* skip header crc if present */
- if (flags & 2)
- bskip(in, 2);
-}
-
-/* write a four-byte little-endian unsigned integer to out */
-local void put4(unsigned long val, FILE *out)
-{
- putc(val & 0xff, out);
- putc((val >> 8) & 0xff, out);
- putc((val >> 16) & 0xff, out);
- putc((val >> 24) & 0xff, out);
-}
-
-/* Load up zlib stream from buffered input, bail if end of file */
-local void zpull(z_streamp strm, bin *in)
-{
- if (in->left == 0)
- bload(in);
- if (in->left == 0)
- bail("unexpected end of file on ", in->name);
- strm->avail_in = in->left;
- strm->next_in = in->next;
-}
-
-/* Write header for gzip file to out and initialize trailer. */
-local void gzinit(unsigned long *crc, unsigned long *tot, FILE *out)
-{
- fwrite("\x1f\x8b\x08\0\0\0\0\0\0\xff", 1, 10, out);
- *crc = crc32(0L, Z_NULL, 0);
- *tot = 0;
-}
-
-/* Copy the compressed data from name, zeroing the last block bit of the last
- block if clr is true, and adding empty blocks as needed to get to a byte
- boundary. If clr is false, then the last block becomes the last block of
- the output, and the gzip trailer is written. crc and tot maintains the
- crc and length (modulo 2^32) of the output for the trailer. The resulting
- gzip file is written to out. gzinit() must be called before the first call
- of gzcopy() to write the gzip header and to initialize crc and tot. */
-local void gzcopy(char *name, int clr, unsigned long *crc, unsigned long *tot,
- FILE *out)
-{
- int ret; /* return value from zlib functions */
- int pos; /* where the "last block" bit is in byte */
- int last; /* true if processing the last block */
- bin *in; /* buffered input file */
- unsigned char *start; /* start of compressed data in buffer */
- unsigned char *junk; /* buffer for uncompressed data -- discarded */
- z_off_t len; /* length of uncompressed data (support > 4 GB) */
- z_stream strm; /* zlib inflate stream */
-
- /* open gzip file and skip header */
- in = bopen(name);
- if (in == NULL)
- bail("could not open ", name);
- gzhead(in);
-
- /* allocate buffer for uncompressed data and initialize raw inflate
- stream */
- junk = malloc(CHUNK);
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- strm.avail_in = 0;
- strm.next_in = Z_NULL;
- ret = inflateInit2(&strm, -15);
- if (junk == NULL || ret != Z_OK)
- bail("out of memory", "");
-
- /* inflate and copy compressed data, clear last-block bit if requested */
- len = 0;
- zpull(&strm, in);
- start = strm.next_in;
- last = start[0] & 1;
- if (last && clr)
- start[0] &= ~1;
- strm.avail_out = 0;
- for (;;) {
- /* if input used and output done, write used input and get more */
- if (strm.avail_in == 0 && strm.avail_out != 0) {
- fwrite(start, 1, strm.next_in - start, out);
- start = in->buf;
- in->left = 0;
- zpull(&strm, in);
- }
-
- /* decompress -- return early when end-of-block reached */
- strm.avail_out = CHUNK;
- strm.next_out = junk;
- ret = inflate(&strm, Z_BLOCK);
- switch (ret) {
- case Z_MEM_ERROR:
- bail("out of memory", "");
- case Z_DATA_ERROR:
- bail("invalid compressed data in ", in->name);
- }
-
- /* update length of uncompressed data */
- len += CHUNK - strm.avail_out;
-
- /* check for block boundary (only get this when block copied out) */
- if (strm.data_type & 128) {
- /* if that was the last block, then done */
- if (last)
- break;
-
- /* number of unused bits in last byte */
- pos = strm.data_type & 7;
-
- /* find the next last-block bit */
- if (pos != 0) {
- /* next last-block bit is in last used byte */
- pos = 0x100 >> pos;
- last = strm.next_in[-1] & pos;
- if (last && clr)
- strm.next_in[-1] &= ~pos;
- }
- else {
- /* next last-block bit is in next unused byte */
- if (strm.avail_in == 0) {
- /* don't have that byte yet -- get it */
- fwrite(start, 1, strm.next_in - start, out);
- start = in->buf;
- in->left = 0;
- zpull(&strm, in);
- }
- last = strm.next_in[0] & 1;
- if (last && clr)
- strm.next_in[0] &= ~1;
- }
- }
- }
-
- /* update buffer with unused input */
- in->left = strm.avail_in;
- in->next = strm.next_in;
-
- /* copy used input, write empty blocks to get to byte boundary */
- pos = strm.data_type & 7;
- fwrite(start, 1, in->next - start - 1, out);
- last = in->next[-1];
- if (pos == 0 || !clr)
- /* already at byte boundary, or last file: write last byte */
- putc(last, out);
- else {
- /* append empty blocks to last byte */
- last &= ((0x100 >> pos) - 1); /* assure unused bits are zero */
- if (pos & 1) {
- /* odd -- append an empty stored block */
- putc(last, out);
- if (pos == 1)
- putc(0, out); /* two more bits in block header */
- fwrite("\0\0\xff\xff", 1, 4, out);
- }
- else {
- /* even -- append 1, 2, or 3 empty fixed blocks */
- switch (pos) {
- case 6:
- putc(last | 8, out);
- last = 0;
- case 4:
- putc(last | 0x20, out);
- last = 0;
- case 2:
- putc(last | 0x80, out);
- putc(0, out);
- }
- }
- }
-
- /* update crc and tot */
- *crc = crc32_combine(*crc, bget4(in), len);
- *tot += (unsigned long)len;
-
- /* clean up */
- inflateEnd(&strm);
- free(junk);
- bclose(in);
-
- /* write trailer if this is the last gzip file */
- if (!clr) {
- put4(*crc, out);
- put4(*tot, out);
- }
-}
-
-/* join the gzip files on the command line, write result to stdout */
-int main(int argc, char **argv)
-{
- unsigned long crc, tot; /* running crc and total uncompressed length */
-
- /* skip command name */
- argc--;
- argv++;
-
- /* show usage if no arguments */
- if (argc == 0) {
- fputs("gzjoin usage: gzjoin f1.gz [f2.gz [f3.gz ...]] > fjoin.gz\n",
- stderr);
- return 0;
- }
-
- /* join gzip files on command line and write to stdout */
- gzinit(&crc, &tot, stdout);
- while (argc--)
- gzcopy(*argv++, argc, &crc, &tot, stdout);
-
- /* done */
- return 0;
-}
+++ /dev/null
-/*
- * gzlog.c
- * Copyright (C) 2004 Mark Adler
- * For conditions of distribution and use, see copyright notice in gzlog.h
- * version 1.0, 26 Nov 2004
- *
- */
-
-#include <string.h> /* memcmp() */
-#include <stdlib.h> /* malloc(), free(), NULL */
-#include <sys/types.h> /* size_t, off_t */
-#include <unistd.h> /* read(), close(), sleep(), ftruncate(), */
- /* lseek() */
-#include <fcntl.h> /* open() */
-#include <sys/file.h> /* flock() */
-#include "zlib.h" /* deflateInit2(), deflate(), deflateEnd() */
-
-#include "gzlog.h" /* interface */
-#define local static
-
-/* log object structure */
-typedef struct {
- int id; /* object identifier */
- int fd; /* log file descriptor */
- off_t extra; /* offset of extra "ap" subfield */
- off_t mark_off; /* offset of marked data */
- off_t last_off; /* offset of last block */
- unsigned long crc; /* uncompressed crc */
- unsigned long len; /* uncompressed length (modulo 2^32) */
- unsigned stored; /* length of current stored block */
-} gz_log;
-
-#define GZLOGID 19334 /* gz_log object identifier */
-
-#define LOCK_RETRY 1 /* retry lock once a second */
-#define LOCK_PATIENCE 1200 /* try about twenty minutes before forcing */
-
-/* acquire a lock on a file */
-local int lock(int fd)
-{
- int patience;
-
- /* try to lock every LOCK_RETRY seconds for LOCK_PATIENCE seconds */
- patience = LOCK_PATIENCE;
- do {
- if (flock(fd, LOCK_EX + LOCK_NB) == 0)
- return 0;
- (void)sleep(LOCK_RETRY);
- patience -= LOCK_RETRY;
- } while (patience > 0);
-
- /* we've run out of patience -- give up */
- return -1;
-}
-
-/* release lock */
-local void unlock(int fd)
-{
- (void)flock(fd, LOCK_UN);
-}
-
-/* release a log object */
-local void log_clean(gz_log *log)
-{
- unlock(log->fd);
- (void)close(log->fd);
- free(log);
-}
-
-/* read an unsigned long from a byte buffer little-endian */
-local unsigned long make_ulg(unsigned char *buf)
-{
- int n;
- unsigned long val;
-
- val = (unsigned long)(*buf++);
- for (n = 8; n < 32; n += 8)
- val += (unsigned long)(*buf++) << n;
- return val;
-}
-
-/* read an off_t from a byte buffer little-endian */
-local off_t make_off(unsigned char *buf)
-{
- int n;
- off_t val;
-
- val = (off_t)(*buf++);
- for (n = 8; n < 64; n += 8)
- val += (off_t)(*buf++) << n;
- return val;
-}
-
-/* write an unsigned long little-endian to byte buffer */
-local void dice_ulg(unsigned long val, unsigned char *buf)
-{
- int n;
-
- for (n = 0; n < 4; n++) {
- *buf++ = val & 0xff;
- val >>= 8;
- }
-}
-
-/* write an off_t little-endian to byte buffer */
-local void dice_off(off_t val, unsigned char *buf)
-{
- int n;
-
- for (n = 0; n < 8; n++) {
- *buf++ = val & 0xff;
- val >>= 8;
- }
-}
-
-/* initial, empty gzip file for appending */
-local char empty_gz[] = {
- 0x1f, 0x8b, /* magic gzip id */
- 8, /* compression method is deflate */
- 4, /* there is an extra field */
- 0, 0, 0, 0, /* no modification time provided */
- 0, 0xff, /* no extra flags, no OS */
- 20, 0, 'a', 'p', 16, 0, /* extra field with "ap" subfield */
- 32, 0, 0, 0, 0, 0, 0, 0, /* offset of uncompressed data */
- 32, 0, 0, 0, 0, 0, 0, 0, /* offset of last block */
- 1, 0, 0, 0xff, 0xff, /* empty stored block (last) */
- 0, 0, 0, 0, /* crc */
- 0, 0, 0, 0 /* uncompressed length */
-};
-
-/* initialize a log object with locking */
-void *gzlog_open(char *path)
-{
- unsigned xlen;
- unsigned char temp[20];
- unsigned sub_len;
- int good;
- gz_log *log;
-
- /* allocate log structure */
- log = malloc(sizeof(gz_log));
- if (log == NULL)
- return NULL;
- log->id = GZLOGID;
-
- /* open file, creating it if necessary, and locking it */
- log->fd = open(path, O_RDWR | O_CREAT, 0600);
- if (log->fd < 0) {
- free(log);
- return NULL;
- }
- if (lock(log->fd)) {
- close(log->fd);
- free(log);
- return NULL;
- }
-
- /* if file is empty, write new gzip stream */
- if (lseek(log->fd, 0, SEEK_END) == 0) {
- if (write(log->fd, empty_gz, sizeof(empty_gz)) != sizeof(empty_gz)) {
- log_clean(log);
- return NULL;
- }
- }
-
- /* check gzip header */
- (void)lseek(log->fd, 0, SEEK_SET);
- if (read(log->fd, temp, 12) != 12 || temp[0] != 0x1f ||
- temp[1] != 0x8b || temp[2] != 8 || (temp[3] & 4) == 0) {
- log_clean(log);
- return NULL;
- }
-
- /* process extra field to find "ap" sub-field */
- xlen = temp[10] + (temp[11] << 8);
- good = 0;
- while (xlen) {
- if (xlen < 4 || read(log->fd, temp, 4) != 4)
- break;
- sub_len = temp[2];
- sub_len += temp[3] << 8;
- xlen -= 4;
- if (memcmp(temp, "ap", 2) == 0 && sub_len == 16) {
- good = 1;
- break;
- }
- if (xlen < sub_len)
- break;
- (void)lseek(log->fd, sub_len, SEEK_CUR);
- xlen -= sub_len;
- }
- if (!good) {
- log_clean(log);
- return NULL;
- }
-
- /* read in "ap" sub-field */
- log->extra = lseek(log->fd, 0, SEEK_CUR);
- if (read(log->fd, temp, 16) != 16) {
- log_clean(log);
- return NULL;
- }
- log->mark_off = make_off(temp);
- log->last_off = make_off(temp + 8);
-
- /* get crc, length of gzip file */
- (void)lseek(log->fd, log->last_off, SEEK_SET);
- if (read(log->fd, temp, 13) != 13 ||
- memcmp(temp, "\001\000\000\377\377", 5) != 0) {
- log_clean(log);
- return NULL;
- }
- log->crc = make_ulg(temp + 5);
- log->len = make_ulg(temp + 9);
-
- /* set up to write over empty last block */
- (void)lseek(log->fd, log->last_off + 5, SEEK_SET);
- log->stored = 0;
- return (void *)log;
-}
-
-/* maximum amount to put in a stored block before starting a new one */
-#define MAX_BLOCK 16384
-
-/* write a block to a log object */
-int gzlog_write(void *obj, char *data, size_t len)
-{
- size_t some;
- unsigned char temp[5];
- gz_log *log;
-
- /* check object */
- log = (gz_log *)obj;
- if (log == NULL || log->id != GZLOGID)
- return 1;
-
- /* write stored blocks until all of the input is written */
- do {
- some = MAX_BLOCK - log->stored;
- if (some > len)
- some = len;
- if (write(log->fd, data, some) != some)
- return 1;
- log->crc = crc32(log->crc, data, some);
- log->len += some;
- len -= some;
- data += some;
- log->stored += some;
-
- /* if the stored block is full, end it and start another */
- if (log->stored == MAX_BLOCK) {
- (void)lseek(log->fd, log->last_off, SEEK_SET);
- temp[0] = 0;
- dice_ulg(log->stored + ((unsigned long)(~log->stored) << 16),
- temp + 1);
- if (write(log->fd, temp, 5) != 5)
- return 1;
- log->last_off = lseek(log->fd, log->stored, SEEK_CUR);
- (void)lseek(log->fd, 5, SEEK_CUR);
- log->stored = 0;
- }
- } while (len);
- return 0;
-}
-
-/* recompress the remaining stored deflate data in place */
-local int recomp(gz_log *log)
-{
- z_stream strm;
- size_t len, max;
- unsigned char *in;
- unsigned char *out;
- unsigned char temp[16];
-
- /* allocate space and read it all in (it's around 1 MB) */
- len = log->last_off - log->mark_off;
- max = len + (len >> 12) + (len >> 14) + 11;
- out = malloc(max);
- if (out == NULL)
- return 1;
- in = malloc(len);
- if (in == NULL) {
- free(out);
- return 1;
- }
- (void)lseek(log->fd, log->mark_off, SEEK_SET);
- if (read(log->fd, in, len) != len) {
- free(in);
- free(out);
- return 1;
- }
-
- /* recompress in memory, decoding stored data as we go */
- /* note: this assumes that unsigned is four bytes or more */
- /* consider not making that assumption */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- if (deflateInit2(&strm, Z_BEST_COMPRESSION, Z_DEFLATED, -15, 8,
- Z_DEFAULT_STRATEGY) != Z_OK) {
- free(in);
- free(out);
- return 1;
- }
- strm.next_in = in;
- strm.avail_out = max;
- strm.next_out = out;
- while (len >= 5) {
- if (strm.next_in[0] != 0)
- break;
- strm.avail_in = strm.next_in[1] + (strm.next_in[2] << 8);
- strm.next_in += 5;
- len -= 5;
- if (strm.avail_in != 0) {
- if (len < strm.avail_in)
- break;
- len -= strm.avail_in;
- (void)deflate(&strm, Z_NO_FLUSH);
- if (strm.avail_in != 0 || strm.avail_out == 0)
- break;
- }
- }
- (void)deflate(&strm, Z_SYNC_FLUSH);
- (void)deflateEnd(&strm);
- free(in);
- if (len != 0 || strm.avail_out == 0) {
- free(out);
- return 1;
- }
-
- /* overwrite stored data with compressed data */
- (void)lseek(log->fd, log->mark_off, SEEK_SET);
- len = max - strm.avail_out;
- if (write(log->fd, out, len) != len) {
- free(out);
- return 1;
- }
- free(out);
-
- /* write last empty block, crc, and length */
- log->mark_off = log->last_off = lseek(log->fd, 0, SEEK_CUR);
- temp[0] = 1;
- dice_ulg(0xffffL << 16, temp + 1);
- dice_ulg(log->crc, temp + 5);
- dice_ulg(log->len, temp + 9);
- if (write(log->fd, temp, 13) != 13)
- return 1;
-
- /* truncate file to discard remaining stored data and old trailer */
- ftruncate(log->fd, lseek(log->fd, 0, SEEK_CUR));
-
- /* update extra field to point to new last empty block */
- (void)lseek(log->fd, log->extra, SEEK_SET);
- dice_off(log->mark_off, temp);
- dice_off(log->last_off, temp + 8);
- if (write(log->fd, temp, 16) != 16)
- return 1;
- return 0;
-}
-
-/* maximum accumulation of stored blocks before compressing */
-#define MAX_STORED 1048576
-
-/* close log object */
-int gzlog_close(void *obj)
-{
- unsigned char temp[8];
- gz_log *log;
-
- /* check object */
- log = (gz_log *)obj;
- if (log == NULL || log->id != GZLOGID)
- return 1;
-
- /* go to start of most recent block being written */
- (void)lseek(log->fd, log->last_off, SEEK_SET);
-
- /* if some stuff was put there, update block */
- if (log->stored) {
- temp[0] = 0;
- dice_ulg(log->stored + ((unsigned long)(~log->stored) << 16),
- temp + 1);
- if (write(log->fd, temp, 5) != 5)
- return 1;
- log->last_off = lseek(log->fd, log->stored, SEEK_CUR);
- }
-
- /* write last block (empty) */
- if (write(log->fd, "\001\000\000\377\377", 5) != 5)
- return 1;
-
- /* write updated crc and uncompressed length */
- dice_ulg(log->crc, temp);
- dice_ulg(log->len, temp + 4);
- if (write(log->fd, temp, 8) != 8)
- return 1;
-
- /* put offset of that last block in gzip extra block */
- (void)lseek(log->fd, log->extra + 8, SEEK_SET);
- dice_off(log->last_off, temp);
- if (write(log->fd, temp, 8) != 8)
- return 1;
-
- /* if more than 1 MB stored, then time to compress it */
- if (log->last_off - log->mark_off > MAX_STORED) {
- if (recomp(log))
- return 1;
- }
-
- /* unlock and close file */
- log_clean(log);
- return 0;
-}
+++ /dev/null
-/* gzlog.h
- Copyright (C) 2004 Mark Adler, all rights reserved
- version 1.0, 26 Nov 2004
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the author be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Mark Adler madler@alumni.caltech.edu
- */
-
-/*
- The gzlog object allows writing short messages to a gzipped log file,
- opening the log file locked for small bursts, and then closing it. The log
- object works by appending stored data to the gzip file until 1 MB has been
- accumulated. At that time, the stored data is compressed, and replaces the
- uncompressed data in the file. The log file is truncated to its new size at
- that time. After closing, the log file is always valid gzip file that can
- decompressed to recover what was written.
-
- A gzip header "extra" field contains two file offsets for appending. The
- first points to just after the last compressed data. The second points to
- the last stored block in the deflate stream, which is empty. All of the
- data between those pointers is uncompressed.
- */
-
-/* Open a gzlog object, creating the log file if it does not exist. Return
- NULL on error. Note that gzlog_open() could take a long time to return if
- there is difficulty in locking the file. */
-void *gzlog_open(char *path);
-
-/* Write to a gzlog object. Return non-zero on error. This function will
- simply write data to the file uncompressed. Compression of the data
- will not occur until gzlog_close() is called. It is expected that
- gzlog_write() is used for a short message, and then gzlog_close() is
- called. If a large amount of data is to be written, then the application
- should write no more than 1 MB at a time with gzlog_write() before
- calling gzlog_close() and then gzlog_open() again. */
-int gzlog_write(void *log, char *data, size_t len);
-
-/* Close a gzlog object. Return non-zero on error. The log file is locked
- until this function is called. This function will compress stored data
- at the end of the gzip file if at least 1 MB has been accumulated. Note
- that the file will not be a valid gzip file until this function completes.
- */
-int gzlog_close(void *log);
+++ /dev/null
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
- "http://www.w3.org/TR/REC-html40/loose.dtd">
-<html>
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
-<title>zlib Usage Example</title>
-<!-- Copyright (c) 2004 Mark Adler. -->
-</head>
-<body bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#00A000">
-<h2 align="center"> zlib Usage Example </h2>
-We often get questions about how the <tt>deflate()</tt> and <tt>inflate()</tt> functions should be used.
-Users wonder when they should provide more input, when they should use more output,
-what to do with a <tt>Z_BUF_ERROR</tt>, how to make sure the process terminates properly, and
-so on. So for those who have read <tt>zlib.h</tt> (a few times), and
-would like further edification, below is an annotated example in C of simple routines to compress and decompress
-from an input file to an output file using <tt>deflate()</tt> and <tt>inflate()</tt> respectively. The
-annotations are interspersed between lines of the code. So please read between the lines.
-We hope this helps explain some of the intricacies of <em>zlib</em>.
-<p>
-Without further adieu, here is the program <a href="zpipe.c"><tt>zpipe.c</tt></a>:
-<pre><b>
-/* zpipe.c: example of proper use of zlib's inflate() and deflate()
- Not copyrighted -- provided to the public domain
- Version 1.2 9 November 2004 Mark Adler */
-
-/* Version history:
- 1.0 30 Oct 2004 First version
- 1.1 8 Nov 2004 Add void casting for unused return values
- Use switch statement for inflate() return values
- 1.2 9 Nov 2004 Add assertions to document zlib guarantees
- */
-</b></pre><!-- -->
-We now include the header files for the required definitions. From
-<tt>stdio.h</tt> we use <tt>fopen()</tt>, <tt>fread()</tt>, <tt>fwrite()</tt>,
-<tt>feof()</tt>, <tt>ferror()</tt>, and <tt>fclose()</tt> for file i/o, and
-<tt>fputs()</tt> for error messages. From <tt>string.h</tt> we use
-<tt>strcmp()</tt> for command line argument processing.
-From <tt>assert.h</tt> we use the <tt>assert()</tt> macro.
-From <tt>zlib.h</tt>
-we use the basic compression functions <tt>deflateInit()</tt>,
-<tt>deflate()</tt>, and <tt>deflateEnd()</tt>, and the basic decompression
-functions <tt>inflateInit()</tt>, <tt>inflate()</tt>, and
-<tt>inflateEnd()</tt>.
-<pre><b>
-#include <stdio.h>
-#include <string.h>
-#include <assert.h>
-#include "zlib.h"
-</b></pre><!-- -->
-<tt>CHUNK</tt> is simply the buffer size for feeding data to and pulling data
-from the <em>zlib</em> routines. Larger buffer sizes would be more efficient,
-especially for <tt>inflate()</tt>. If the memory is available, buffers sizes
-on the order of 128K or 256K bytes should be used.
-<pre><b>
-#define CHUNK 16384
-</b></pre><!-- -->
-The <tt>def()</tt> routine compresses data from an input file to an output file. The output data
-will be in the <em>zlib</em> format, which is different from the <em>gzip</em> or <em>zip</em>
-formats. The <em>zlib</em> format has a very small header of only two bytes to identify it as
-a <em>zlib</em> stream and to provide decoding information, and a four-byte trailer with a fast
-check value to verify the integrity of the uncompressed data after decoding.
-<pre><b>
-/* Compress from file source to file dest until EOF on source.
- def() returns Z_OK on success, Z_MEM_ERROR if memory could not be
- allocated for processing, Z_STREAM_ERROR if an invalid compression
- level is supplied, Z_VERSION_ERROR if the version of zlib.h and the
- version of the library linked do not match, or Z_ERRNO if there is
- an error reading or writing the files. */
-int def(FILE *source, FILE *dest, int level)
-{
-</b></pre>
-Here are the local variables for <tt>def()</tt>. <tt>ret</tt> will be used for <em>zlib</em>
-return codes. <tt>flush</tt> will keep track of the current flushing state for <tt>deflate()</tt>,
-which is either no flushing, or flush to completion after the end of the input file is reached.
-<tt>have</tt> is the amount of data returned from <tt>deflate()</tt>. The <tt>strm</tt> structure
-is used to pass information to and from the <em>zlib</em> routines, and to maintain the
-<tt>deflate()</tt> state. <tt>in</tt> and <tt>out</tt> are the input and output buffers for
-<tt>deflate()</tt>.
-<pre><b>
- int ret, flush;
- unsigned have;
- z_stream strm;
- char in[CHUNK];
- char out[CHUNK];
-</b></pre><!-- -->
-The first thing we do is to initialize the <em>zlib</em> state for compression using
-<tt>deflateInit()</tt>. This must be done before the first use of <tt>deflate()</tt>.
-The <tt>zalloc</tt>, <tt>zfree</tt>, and <tt>opaque</tt> fields in the <tt>strm</tt>
-structure must be initialized before calling <tt>deflateInit()</tt>. Here they are
-set to the <em>zlib</em> constant <tt>Z_NULL</tt> to request that <em>zlib</em> use
-the default memory allocation routines. An application may also choose to provide
-custom memory allocation routines here. <tt>deflateInit()</tt> will allocate on the
-order of 256K bytes for the internal state.
-(See <a href="zlib_tech.html"><em>zlib Technical Details</em></a>.)
-<p>
-<tt>deflateInit()</tt> is called with a pointer to the structure to be initialized and
-the compression level, which is an integer in the range of -1 to 9. Lower compression
-levels result in faster execution, but less compression. Higher levels result in
-greater compression, but slower execution. The <em>zlib</em> constant Z_DEFAULT_COMPRESSION,
-equal to -1,
-provides a good compromise between compression and speed and is equivalent to level 6.
-Level 0 actually does no compression at all, and in fact expands the data slightly to produce
-the <em>zlib</em> format (it is not a byte-for-byte copy of the input).
-More advanced applications of <em>zlib</em>
-may use <tt>deflateInit2()</tt> here instead. Such an application may want to reduce how
-much memory will be used, at some price in compression. Or it may need to request a
-<em>gzip</em> header and trailer instead of a <em>zlib</em> header and trailer, or raw
-encoding with no header or trailer at all.
-<p>
-We must check the return value of <tt>deflateInit()</tt> against the <em>zlib</em> constant
-<tt>Z_OK</tt> to make sure that it was able to
-allocate memory for the internal state, and that the provided arguments were valid.
-<tt>deflateInit()</tt> will also check that the version of <em>zlib</em> that the <tt>zlib.h</tt>
-file came from matches the version of <em>zlib</em> actually linked with the program. This
-is especially important for environments in which <em>zlib</em> is a shared library.
-<p>
-Note that an application can initialize multiple, independent <em>zlib</em> streams, which can
-operate in parallel. The state information maintained in the structure allows the <em>zlib</em>
-routines to be reentrant.
-<pre><b>
- /* allocate deflate state */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- ret = deflateInit(&strm, level);
- if (ret != Z_OK)
- return ret;
-</b></pre><!-- -->
-With the pleasantries out of the way, now we can get down to business. The outer <tt>do</tt>-loop
-reads all of the input file and exits at the bottom of the loop once end-of-file is reached.
-This loop contains the only call of <tt>deflate()</tt>. So we must make sure that all of the
-input data has been processed and that all of the output data has been generated and consumed
-before we fall out of the loop at the bottom.
-<pre><b>
- /* compress until end of file */
- do {
-</b></pre>
-We start off by reading data from the input file. The number of bytes read is put directly
-into <tt>avail_in</tt>, and a pointer to those bytes is put into <tt>next_in</tt>. We also
-check to see if end-of-file on the input has been reached. If we are at the end of file, then <tt>flush</tt> is set to the
-<em>zlib</em> constant <tt>Z_FINISH</tt>, which is later passed to <tt>deflate()</tt> to
-indicate that this is the last chunk of input data to compress. We need to use <tt>feof()</tt>
-to check for end-of-file as opposed to seeing if fewer than <tt>CHUNK</tt> bytes have been read. The
-reason is that if the input file length is an exact multiple of <tt>CHUNK</tt>, we will miss
-the fact that we got to the end-of-file, and not know to tell <tt>deflate()</tt> to finish
-up the compressed stream. If we are not yet at the end of the input, then the <em>zlib</em>
-constant <tt>Z_NO_FLUSH</tt> will be passed to <tt>deflate</tt> to indicate that we are still
-in the middle of the uncompressed data.
-<p>
-If there is an error in reading from the input file, the process is aborted with
-<tt>deflateEnd()</tt> being called to free the allocated <em>zlib</em> state before returning
-the error. We wouldn't want a memory leak, now would we? <tt>deflateEnd()</tt> can be called
-at any time after the state has been initialized. Once that's done, <tt>deflateInit()</tt> (or
-<tt>deflateInit2()</tt>) would have to be called to start a new compression process. There is
-no point here in checking the <tt>deflateEnd()</tt> return code. The deallocation can't fail.
-<pre><b>
- strm.avail_in = fread(in, 1, CHUNK, source);
- if (ferror(source)) {
- (void)deflateEnd(&strm);
- return Z_ERRNO;
- }
- flush = feof(source) ? Z_FINISH : Z_NO_FLUSH;
- strm.next_in = in;
-</b></pre><!-- -->
-The inner <tt>do</tt>-loop passes our chunk of input data to <tt>deflate()</tt>, and then
-keeps calling <tt>deflate()</tt> until it is done producing output. Once there is no more
-new output, <tt>deflate()</tt> is guaranteed to have consumed all of the input, i.e.,
-<tt>avail_in</tt> will be zero.
-<pre><b>
- /* run deflate() on input until output buffer not full, finish
- compression if all of source has been read in */
- do {
-</b></pre>
-Output space is provided to <tt>deflate()</tt> by setting <tt>avail_out</tt> to the number
-of available output bytes and <tt>next_out</tt> to a pointer to that space.
-<pre><b>
- strm.avail_out = CHUNK;
- strm.next_out = out;
-</b></pre>
-Now we call the compression engine itself, <tt>deflate()</tt>. It takes as many of the
-<tt>avail_in</tt> bytes at <tt>next_in</tt> as it can process, and writes as many as
-<tt>avail_out</tt> bytes to <tt>next_out</tt>. Those counters and pointers are then
-updated past the input data consumed and the output data written. It is the amount of
-output space available that may limit how much input is consumed.
-Hence the inner loop to make sure that
-all of the input is consumed by providing more output space each time. Since <tt>avail_in</tt>
-and <tt>next_in</tt> are updated by <tt>deflate()</tt>, we don't have to mess with those
-between <tt>deflate()</tt> calls until it's all used up.
-<p>
-The parameters to <tt>deflate()</tt> are a pointer to the <tt>strm</tt> structure containing
-the input and output information and the internal compression engine state, and a parameter
-indicating whether and how to flush data to the output. Normally <tt>deflate</tt> will consume
-several K bytes of input data before producing any output (except for the header), in order
-to accumulate statistics on the data for optimum compression. It will then put out a burst of
-compressed data, and proceed to consume more input before the next burst. Eventually,
-<tt>deflate()</tt>
-must be told to terminate the stream, complete the compression with provided input data, and
-write out the trailer check value. <tt>deflate()</tt> will continue to compress normally as long
-as the flush parameter is <tt>Z_NO_FLUSH</tt>. Once the <tt>Z_FINISH</tt> parameter is provided,
-<tt>deflate()</tt> will begin to complete the compressed output stream. However depending on how
-much output space is provided, <tt>deflate()</tt> may have to be called several times until it
-has provided the complete compressed stream, even after it has consumed all of the input. The flush
-parameter must continue to be <tt>Z_FINISH</tt> for those subsequent calls.
-<p>
-There are other values of the flush parameter that are used in more advanced applications. You can
-force <tt>deflate()</tt> to produce a burst of output that encodes all of the input data provided
-so far, even if it wouldn't have otherwise, for example to control data latency on a link with
-compressed data. You can also ask that <tt>deflate()</tt> do that as well as erase any history up to
-that point so that what follows can be decompressed independently, for example for random access
-applications. Both requests will degrade compression by an amount depending on how often such
-requests are made.
-<p>
-<tt>deflate()</tt> has a return value that can indicate errors, yet we do not check it here. Why
-not? Well, it turns out that <tt>deflate()</tt> can do no wrong here. Let's go through
-<tt>deflate()</tt>'s return values and dispense with them one by one. The possible values are
-<tt>Z_OK</tt>, <tt>Z_STREAM_END</tt>, <tt>Z_STREAM_ERROR</tt>, or <tt>Z_BUF_ERROR</tt>. <tt>Z_OK</tt>
-is, well, ok. <tt>Z_STREAM_END</tt> is also ok and will be returned for the last call of
-<tt>deflate()</tt>. This is already guaranteed by calling <tt>deflate()</tt> with <tt>Z_FINISH</tt>
-until it has no more output. <tt>Z_STREAM_ERROR</tt> is only possible if the stream is not
-initialized properly, but we did initialize it properly. There is no harm in checking for
-<tt>Z_STREAM_ERROR</tt> here, for example to check for the possibility that some
-other part of the application inadvertently clobbered the memory containing the <em>zlib</em> state.
-<tt>Z_BUF_ERROR</tt> will be explained further below, but
-suffice it to say that this is simply an indication that <tt>deflate()</tt> could not consume
-more input or produce more output. <tt>deflate()</tt> can be called again with more output space
-or more available input, which it will be in this code.
-<pre><b>
- ret = deflate(&strm, flush); /* no bad return value */
- assert(ret != Z_STREAM_ERROR); /* state not clobbered */
-</b></pre>
-Now we compute how much output <tt>deflate()</tt> provided on the last call, which is the
-difference between how much space was provided before the call, and how much output space
-is still available after the call. Then that data, if any, is written to the output file.
-We can then reuse the output buffer for the next call of <tt>deflate()</tt>. Again if there
-is a file i/o error, we call <tt>deflateEnd()</tt> before returning to avoid a memory leak.
-<pre><b>
- have = CHUNK - strm.avail_out;
- if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
- (void)deflateEnd(&strm);
- return Z_ERRNO;
- }
-</b></pre>
-The inner <tt>do</tt>-loop is repeated until the last <tt>deflate()</tt> call fails to fill the
-provided output buffer. Then we know that <tt>deflate()</tt> has done as much as it can with
-the provided input, and that all of that input has been consumed. We can then fall out of this
-loop and reuse the input buffer.
-<p>
-The way we tell that <tt>deflate()</tt> has no more output is by seeing that it did not fill
-the output buffer, leaving <tt>avail_out</tt> greater than zero. However suppose that
-<tt>deflate()</tt> has no more output, but just so happened to exactly fill the output buffer!
-<tt>avail_out</tt> is zero, and we can't tell that <tt>deflate()</tt> has done all it can.
-As far as we know, <tt>deflate()</tt>
-has more output for us. So we call it again. But now <tt>deflate()</tt> produces no output
-at all, and <tt>avail_out</tt> remains unchanged as <tt>CHUNK</tt>. That <tt>deflate()</tt> call
-wasn't able to do anything, either consume input or produce output, and so it returns
-<tt>Z_BUF_ERROR</tt>. (See, I told you I'd cover this later.) However this is not a problem at
-all. Now we finally have the desired indication that <tt>deflate()</tt> is really done,
-and so we drop out of the inner loop to provide more input to <tt>deflate()</tt>.
-<p>
-With <tt>flush</tt> set to <tt>Z_FINISH</tt>, this final set of <tt>deflate()</tt> calls will
-complete the output stream. Once that is done, subsequent calls of <tt>deflate()</tt> would return
-<tt>Z_STREAM_ERROR</tt> if the flush parameter is not <tt>Z_FINISH</tt>, and do no more processing
-until the state is reinitialized.
-<p>
-Some applications of <em>zlib</em> have two loops that call <tt>deflate()</tt>
-instead of the single inner loop we have here. The first loop would call
-without flushing and feed all of the data to <tt>deflate()</tt>. The second loop would call
-<tt>deflate()</tt> with no more
-data and the <tt>Z_FINISH</tt> parameter to complete the process. As you can see from this
-example, that can be avoided by simply keeping track of the current flush state.
-<pre><b>
- } while (strm.avail_out == 0);
- assert(strm.avail_in == 0); /* all input will be used */
-</b></pre><!-- -->
-Now we check to see if we have already processed all of the input file. That information was
-saved in the <tt>flush</tt> variable, so we see if that was set to <tt>Z_FINISH</tt>. If so,
-then we're done and we fall out of the outer loop. We're guaranteed to get <tt>Z_STREAM_END</tt>
-from the last <tt>deflate()</tt> call, since we ran it until the last chunk of input was
-consumed and all of the output was generated.
-<pre><b>
- /* done when last data in file processed */
- } while (flush != Z_FINISH);
- assert(ret == Z_STREAM_END); /* stream will be complete */
-</b></pre><!-- -->
-The process is complete, but we still need to deallocate the state to avoid a memory leak
-(or rather more like a memory hemorrhage if you didn't do this). Then
-finally we can return with a happy return value.
-<pre><b>
- /* clean up and return */
- (void)deflateEnd(&strm);
- return Z_OK;
-}
-</b></pre><!-- -->
-Now we do the same thing for decompression in the <tt>inf()</tt> routine. <tt>inf()</tt>
-decompresses what is hopefully a valid <em>zlib</em> stream from the input file and writes the
-uncompressed data to the output file. Much of the discussion above for <tt>def()</tt>
-applies to <tt>inf()</tt> as well, so the discussion here will focus on the differences between
-the two.
-<pre><b>
-/* Decompress from file source to file dest until stream ends or EOF.
- inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
- allocated for processing, Z_DATA_ERROR if the deflate data is
- invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
- the version of the library linked do not match, or Z_ERRNO if there
- is an error reading or writing the files. */
-int inf(FILE *source, FILE *dest)
-{
-</b></pre>
-The local variables have the same functionality as they do for <tt>def()</tt>. The
-only difference is that there is no <tt>flush</tt> variable, since <tt>inflate()</tt>
-can tell from the <em>zlib</em> stream itself when the stream is complete.
-<pre><b>
- int ret;
- unsigned have;
- z_stream strm;
- char in[CHUNK];
- char out[CHUNK];
-</b></pre><!-- -->
-The initialization of the state is the same, except that there is no compression level,
-of course, and two more elements of the structure are initialized. <tt>avail_in</tt>
-and <tt>next_in</tt> must be initialized before calling <tt>inflateInit()</tt>. This
-is because the application has the option to provide the start of the zlib stream in
-order for <tt>inflateInit()</tt> to have access to information about the compression
-method to aid in memory allocation. In the current implementation of <em>zlib</em>
-(up through versions 1.2.x), the method-dependent memory allocations are deferred to the first call of
-<tt>inflate()</tt> anyway. However those fields must be initialized since later versions
-of <em>zlib</em> that provide more compression methods may take advantage of this interface.
-In any case, no decompression is performed by <tt>inflateInit()</tt>, so the
-<tt>avail_out</tt> and <tt>next_out</tt> fields do not need to be initialized before calling.
-<p>
-Here <tt>avail_in</tt> is set to zero and <tt>next_in</tt> is set to <tt>Z_NULL</tt> to
-indicate that no input data is being provided.
-<pre><b>
- /* allocate inflate state */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- strm.avail_in = 0;
- strm.next_in = Z_NULL;
- ret = inflateInit(&strm);
- if (ret != Z_OK)
- return ret;
-</b></pre><!-- -->
-The outer <tt>do</tt>-loop decompresses input until <tt>inflate()</tt> indicates
-that it has reached the end of the compressed data and has produced all of the uncompressed
-output. This is in contrast to <tt>def()</tt> which processes all of the input file.
-If end-of-file is reached before the compressed data self-terminates, then the compressed
-data is incomplete and an error is returned.
-<pre><b>
- /* decompress until deflate stream ends or end of file */
- do {
-</b></pre>
-We read input data and set the <tt>strm</tt> structure accordingly. If we've reached the
-end of the input file, then we leave the outer loop and report an error, since the
-compressed data is incomplete. Note that we may read more data than is eventually consumed
-by <tt>inflate()</tt>, if the input file continues past the <em>zlib</em> stream.
-For applications where <em>zlib</em> streams are embedded in other data, this routine would
-need to be modified to return the unused data, or at least indicate how much of the input
-data was not used, so the application would know where to pick up after the <em>zlib</em> stream.
-<pre><b>
- strm.avail_in = fread(in, 1, CHUNK, source);
- if (ferror(source)) {
- (void)inflateEnd(&strm);
- return Z_ERRNO;
- }
- if (strm.avail_in == 0)
- break;
- strm.next_in = in;
-</b></pre><!-- -->
-The inner <tt>do</tt>-loop has the same function it did in <tt>def()</tt>, which is to
-keep calling <tt>inflate()</tt> until has generated all of the output it can with the
-provided input.
-<pre><b>
- /* run inflate() on input until output buffer not full */
- do {
-</b></pre>
-Just like in <tt>def()</tt>, the same output space is provided for each call of <tt>inflate()</tt>.
-<pre><b>
- strm.avail_out = CHUNK;
- strm.next_out = out;
-</b></pre>
-Now we run the decompression engine itself. There is no need to adjust the flush parameter, since
-the <em>zlib</em> format is self-terminating. The main difference here is that there are
-return values that we need to pay attention to. <tt>Z_DATA_ERROR</tt>
-indicates that <tt>inflate()</tt> detected an error in the <em>zlib</em> compressed data format,
-which means that either the data is not a <em>zlib</em> stream to begin with, or that the data was
-corrupted somewhere along the way since it was compressed. The other error to be processed is
-<tt>Z_MEM_ERROR</tt>, which can occur since memory allocation is deferred until <tt>inflate()</tt>
-needs it, unlike <tt>deflate()</tt>, whose memory is allocated at the start by <tt>deflateInit()</tt>.
-<p>
-Advanced applications may use
-<tt>deflateSetDictionary()</tt> to prime <tt>deflate()</tt> with a set of likely data to improve the
-first 32K or so of compression. This is noted in the <em>zlib</em> header, so <tt>inflate()</tt>
-requests that that dictionary be provided before it can start to decompress. Without the dictionary,
-correct decompression is not possible. For this routine, we have no idea what the dictionary is,
-so the <tt>Z_NEED_DICT</tt> indication is converted to a <tt>Z_DATA_ERROR</tt>.
-<p>
-<tt>inflate()</tt> can also return <tt>Z_STREAM_ERROR</tt>, which should not be possible here,
-but could be checked for as noted above for <tt>def()</tt>. <tt>Z_BUF_ERROR</tt> does not need to be
-checked for here, for the same reasons noted for <tt>def()</tt>. <tt>Z_STREAM_END</tt> will be
-checked for later.
-<pre><b>
- ret = inflate(&strm, Z_NO_FLUSH);
- assert(ret != Z_STREAM_ERROR); /* state not clobbered */
- switch (ret) {
- case Z_NEED_DICT:
- ret = Z_DATA_ERROR; /* and fall through */
- case Z_DATA_ERROR:
- case Z_MEM_ERROR:
- (void)inflateEnd(&strm);
- return ret;
- }
-</b></pre>
-The output of <tt>inflate()</tt> is handled identically to that of <tt>deflate()</tt>.
-<pre><b>
- have = CHUNK - strm.avail_out;
- if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
- (void)inflateEnd(&strm);
- return Z_ERRNO;
- }
-</b></pre>
-The inner <tt>do</tt>-loop ends when <tt>inflate()</tt> has no more output as indicated
-by not filling the output buffer, just as for <tt>deflate()</tt>. In this case, we cannot
-assert that <tt>strm.avail_in</tt> will be zero, since the deflate stream may end before the file
-does.
-<pre><b>
- } while (strm.avail_out == 0);
-</b></pre><!-- -->
-The outer <tt>do</tt>-loop ends when <tt>inflate()</tt> reports that it has reached the
-end of the input <em>zlib</em> stream, has completed the decompression and integrity
-check, and has provided all of the output. This is indicated by the <tt>inflate()</tt>
-return value <tt>Z_STREAM_END</tt>. The inner loop is guaranteed to leave <tt>ret</tt>
-equal to <tt>Z_STREAM_END</tt> if the last chunk of the input file read contained the end
-of the <em>zlib</em> stream. So if the return value is not <tt>Z_STREAM_END</tt>, the
-loop continues to read more input.
-<pre><b>
- /* done when inflate() says it's done */
- } while (ret != Z_STREAM_END);
-</b></pre><!-- -->
-At this point, decompression successfully completed, or we broke out of the loop due to no
-more data being available from the input file. If the last <tt>inflate()</tt> return value
-is not <tt>Z_STREAM_END</tt>, then the <em>zlib</em> stream was incomplete and a data error
-is returned. Otherwise, we return with a happy return value. Of course, <tt>inflateEnd()</tt>
-is called first to avoid a memory leak.
-<pre><b>
- /* clean up and return */
- (void)inflateEnd(&strm);
- return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
-}
-</b></pre><!-- -->
-That ends the routines that directly use <em>zlib</em>. The following routines make this
-a command-line program by running data through the above routines from <tt>stdin</tt> to
-<tt>stdout</tt>, and handling any errors reported by <tt>def()</tt> or <tt>inf()</tt>.
-<p>
-<tt>zerr()</tt> is used to interpret the possible error codes from <tt>def()</tt>
-and <tt>inf()</tt>, as detailed in their comments above, and print out an error message.
-Note that these are only a subset of the possible return values from <tt>deflate()</tt>
-and <tt>inflate()</tt>.
-<pre><b>
-/* report a zlib or i/o error */
-void zerr(int ret)
-{
- fputs("zpipe: ", stderr);
- switch (ret) {
- case Z_ERRNO:
- if (ferror(stdin))
- fputs("error reading stdin\n", stderr);
- if (ferror(stdout))
- fputs("error writing stdout\n", stderr);
- break;
- case Z_STREAM_ERROR:
- fputs("invalid compression level\n", stderr);
- break;
- case Z_DATA_ERROR:
- fputs("invalid or incomplete deflate data\n", stderr);
- break;
- case Z_MEM_ERROR:
- fputs("out of memory\n", stderr);
- break;
- case Z_VERSION_ERROR:
- fputs("zlib version mismatch!\n", stderr);
- }
-}
-</b></pre><!-- -->
-Here is the <tt>main()</tt> routine used to test <tt>def()</tt> and <tt>inf()</tt>. The
-<tt>zpipe</tt> command is simply a compression pipe from <tt>stdin</tt> to <tt>stdout</tt>, if
-no arguments are given, or it is a decompression pipe if <tt>zpipe -d</tt> is used. If any other
-arguments are provided, no compression or decompression is performed. Instead a usage
-message is displayed. Examples are <tt>zpipe < foo.txt > foo.txt.z</tt> to compress, and
-<tt>zpipe -d < foo.txt.z > foo.txt</tt> to decompress.
-<pre><b>
-/* compress or decompress from stdin to stdout */
-int main(int argc, char **argv)
-{
- int ret;
-
- /* do compression if no arguments */
- if (argc == 1) {
- ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION);
- if (ret != Z_OK)
- zerr(ret);
- return ret;
- }
-
- /* do decompression if -d specified */
- else if (argc == 2 && strcmp(argv[1], "-d") == 0) {
- ret = inf(stdin, stdout);
- if (ret != Z_OK)
- zerr(ret);
- return ret;
- }
-
- /* otherwise, report usage */
- else {
- fputs("zpipe usage: zpipe [-d] < source > dest\n", stderr);
- return 1;
- }
-}
-</b></pre>
-<hr>
-<i>Copyright (c) 2004 by Mark Adler<br>Last modified 13 November 2004</i>
-</body>
-</html>
+++ /dev/null
-/* zpipe.c: example of proper use of zlib's inflate() and deflate()
- Not copyrighted -- provided to the public domain
- Version 1.2 9 November 2004 Mark Adler */
-
-/* Version history:
- 1.0 30 Oct 2004 First version
- 1.1 8 Nov 2004 Add void casting for unused return values
- Use switch statement for inflate() return values
- 1.2 9 Nov 2004 Add assertions to document zlib guarantees
- 1.3 6 Apr 2005 Remove incorrect assertion in inf()
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <assert.h>
-#include "zlib.h"
-
-#define CHUNK 16384
-
-/* Compress from file source to file dest until EOF on source.
- def() returns Z_OK on success, Z_MEM_ERROR if memory could not be
- allocated for processing, Z_STREAM_ERROR if an invalid compression
- level is supplied, Z_VERSION_ERROR if the version of zlib.h and the
- version of the library linked do not match, or Z_ERRNO if there is
- an error reading or writing the files. */
-int def(FILE *source, FILE *dest, int level)
-{
- int ret, flush;
- unsigned have;
- z_stream strm;
- char in[CHUNK];
- char out[CHUNK];
-
- /* allocate deflate state */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- ret = deflateInit(&strm, level);
- if (ret != Z_OK)
- return ret;
-
- /* compress until end of file */
- do {
- strm.avail_in = fread(in, 1, CHUNK, source);
- if (ferror(source)) {
- (void)deflateEnd(&strm);
- return Z_ERRNO;
- }
- flush = feof(source) ? Z_FINISH : Z_NO_FLUSH;
- strm.next_in = in;
-
- /* run deflate() on input until output buffer not full, finish
- compression if all of source has been read in */
- do {
- strm.avail_out = CHUNK;
- strm.next_out = out;
- ret = deflate(&strm, flush); /* no bad return value */
- assert(ret != Z_STREAM_ERROR); /* state not clobbered */
- have = CHUNK - strm.avail_out;
- if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
- (void)deflateEnd(&strm);
- return Z_ERRNO;
- }
- } while (strm.avail_out == 0);
- assert(strm.avail_in == 0); /* all input will be used */
-
- /* done when last data in file processed */
- } while (flush != Z_FINISH);
- assert(ret == Z_STREAM_END); /* stream will be complete */
-
- /* clean up and return */
- (void)deflateEnd(&strm);
- return Z_OK;
-}
-
-/* Decompress from file source to file dest until stream ends or EOF.
- inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
- allocated for processing, Z_DATA_ERROR if the deflate data is
- invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
- the version of the library linked do not match, or Z_ERRNO if there
- is an error reading or writing the files. */
-int inf(FILE *source, FILE *dest)
-{
- int ret;
- unsigned have;
- z_stream strm;
- char in[CHUNK];
- char out[CHUNK];
-
- /* allocate inflate state */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- strm.avail_in = 0;
- strm.next_in = Z_NULL;
- ret = inflateInit(&strm);
- if (ret != Z_OK)
- return ret;
-
- /* decompress until deflate stream ends or end of file */
- do {
- strm.avail_in = fread(in, 1, CHUNK, source);
- if (ferror(source)) {
- (void)inflateEnd(&strm);
- return Z_ERRNO;
- }
- if (strm.avail_in == 0)
- break;
- strm.next_in = in;
-
- /* run inflate() on input until output buffer not full */
- do {
- strm.avail_out = CHUNK;
- strm.next_out = out;
- ret = inflate(&strm, Z_NO_FLUSH);
- assert(ret != Z_STREAM_ERROR); /* state not clobbered */
- switch (ret) {
- case Z_NEED_DICT:
- ret = Z_DATA_ERROR; /* and fall through */
- case Z_DATA_ERROR:
- case Z_MEM_ERROR:
- (void)inflateEnd(&strm);
- return ret;
- }
- have = CHUNK - strm.avail_out;
- if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
- (void)inflateEnd(&strm);
- return Z_ERRNO;
- }
- } while (strm.avail_out == 0);
-
- /* done when inflate() says it's done */
- } while (ret != Z_STREAM_END);
-
- /* clean up and return */
- (void)inflateEnd(&strm);
- return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
-}
-
-/* report a zlib or i/o error */
-void zerr(int ret)
-{
- fputs("zpipe: ", stderr);
- switch (ret) {
- case Z_ERRNO:
- if (ferror(stdin))
- fputs("error reading stdin\n", stderr);
- if (ferror(stdout))
- fputs("error writing stdout\n", stderr);
- break;
- case Z_STREAM_ERROR:
- fputs("invalid compression level\n", stderr);
- break;
- case Z_DATA_ERROR:
- fputs("invalid or incomplete deflate data\n", stderr);
- break;
- case Z_MEM_ERROR:
- fputs("out of memory\n", stderr);
- break;
- case Z_VERSION_ERROR:
- fputs("zlib version mismatch!\n", stderr);
- }
-}
-
-/* compress or decompress from stdin to stdout */
-int main(int argc, char **argv)
-{
- int ret;
-
- /* do compression if no arguments */
- if (argc == 1) {
- ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION);
- if (ret != Z_OK)
- zerr(ret);
- return ret;
- }
-
- /* do decompression if -d specified */
- else if (argc == 2 && strcmp(argv[1], "-d") == 0) {
- ret = inf(stdin, stdout);
- if (ret != Z_OK)
- zerr(ret);
- return ret;
- }
-
- /* otherwise, report usage */
- else {
- fputs("zpipe usage: zpipe [-d] < source > dest\n", stderr);
- return 1;
- }
-}
+++ /dev/null
-/* zran.c -- example of zlib/gzip stream indexing and random access
- * Copyright (C) 2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- Version 1.0 29 May 2005 Mark Adler */
-
-/* Illustrate the use of Z_BLOCK, inflatePrime(), and inflateSetDictionary()
- for random access of a compressed file. A file containing a zlib or gzip
- stream is provided on the command line. The compressed stream is decoded in
- its entirety, and an index built with access points about every SPAN bytes
- in the uncompressed output. The compressed file is left open, and can then
- be read randomly, having to decompress on the average SPAN/2 uncompressed
- bytes before getting to the desired block of data.
-
- An access point can be created at the start of any deflate block, by saving
- the starting file offset and bit of that block, and the 32K bytes of
- uncompressed data that precede that block. Also the uncompressed offset of
- that block is saved to provide a referece for locating a desired starting
- point in the uncompressed stream. build_index() works by decompressing the
- input zlib or gzip stream a block at a time, and at the end of each block
- deciding if enough uncompressed data has gone by to justify the creation of
- a new access point. If so, that point is saved in a data structure that
- grows as needed to accommodate the points.
-
- To use the index, an offset in the uncompressed data is provided, for which
- the latest accees point at or preceding that offset is located in the index.
- The input file is positioned to the specified location in the index, and if
- necessary the first few bits of the compressed data is read from the file.
- inflate is initialized with those bits and the 32K of uncompressed data, and
- the decompression then proceeds until the desired offset in the file is
- reached. Then the decompression continues to read the desired uncompressed
- data from the file.
-
- Another approach would be to generate the index on demand. In that case,
- requests for random access reads from the compressed data would try to use
- the index, but if a read far enough past the end of the index is required,
- then further index entries would be generated and added.
-
- There is some fair bit of overhead to starting inflation for the random
- access, mainly copying the 32K byte dictionary. So if small pieces of the
- file are being accessed, it would make sense to implement a cache to hold
- some lookahead and avoid many calls to extract() for small lengths.
-
- Another way to build an index would be to use inflateCopy(). That would
- not be constrained to have access points at block boundaries, but requires
- more memory per access point, and also cannot be saved to file due to the
- use of pointers in the state. The approach here allows for storage of the
- index in a file.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "zlib.h"
-
-#define local static
-
-#define SPAN 1048576L /* desired distance between access points */
-#define WINSIZE 32768U /* sliding window size */
-#define CHUNK 16384 /* file input buffer size */
-
-/* access point entry */
-struct point {
- off_t out; /* corresponding offset in uncompressed data */
- off_t in; /* offset in input file of first full byte */
- int bits; /* number of bits (1-7) from byte at in - 1, or 0 */
- unsigned char window[WINSIZE]; /* preceding 32K of uncompressed data */
-};
-
-/* access point list */
-struct access {
- int have; /* number of list entries filled in */
- int size; /* number of list entries allocated */
- struct point *list; /* allocated list */
-};
-
-/* Deallocate an index built by build_index() */
-local void free_index(struct access *index)
-{
- if (index != NULL) {
- free(index->list);
- free(index);
- }
-}
-
-/* Add an entry to the access point list. If out of memory, deallocate the
- existing list and return NULL. */
-local struct access *addpoint(struct access *index, int bits,
- off_t in, off_t out, unsigned left, unsigned char *window)
-{
- struct point *next;
-
- /* if list is empty, create it (start with eight points) */
- if (index == NULL) {
- index = malloc(sizeof(struct access));
- if (index == NULL) return NULL;
- index->list = malloc(sizeof(struct point) << 3);
- if (index->list == NULL) {
- free(index);
- return NULL;
- }
- index->size = 8;
- index->have = 0;
- }
-
- /* if list is full, make it bigger */
- else if (index->have == index->size) {
- index->size <<= 1;
- next = realloc(index->list, sizeof(struct point) * index->size);
- if (next == NULL) {
- free_index(index);
- return NULL;
- }
- index->list = next;
- }
-
- /* fill in entry and increment how many we have */
- next = index->list + index->have;
- next->bits = bits;
- next->in = in;
- next->out = out;
- if (left)
- memcpy(next->window, window + WINSIZE - left, left);
- if (left < WINSIZE)
- memcpy(next->window + left, window, WINSIZE - left);
- index->have++;
-
- /* return list, possibly reallocated */
- return index;
-}
-
-/* Make one entire pass through the compressed stream and build an index, with
- access points about every span bytes of uncompressed output -- span is
- chosen to balance the speed of random access against the memory requirements
- of the list, about 32K bytes per access point. Note that data after the end
- of the first zlib or gzip stream in the file is ignored. build_index()
- returns the number of access points on success (>= 1), Z_MEM_ERROR for out
- of memory, Z_DATA_ERROR for an error in the input file, or Z_ERRNO for a
- file read error. On success, *built points to the resulting index. */
-local int build_index(FILE *in, off_t span, struct access **built)
-{
- int ret;
- off_t totin, totout; /* our own total counters to avoid 4GB limit */
- off_t last; /* totout value of last access point */
- struct access *index; /* access points being generated */
- z_stream strm;
- unsigned char input[CHUNK];
- unsigned char window[WINSIZE];
-
- /* initialize inflate */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- strm.avail_in = 0;
- strm.next_in = Z_NULL;
- ret = inflateInit2(&strm, 47); /* automatic zlib or gzip decoding */
- if (ret != Z_OK)
- return ret;
-
- /* inflate the input, maintain a sliding window, and build an index -- this
- also validates the integrity of the compressed data using the check
- information at the end of the gzip or zlib stream */
- totin = totout = last = 0;
- index = NULL; /* will be allocated by first addpoint() */
- strm.avail_out = 0;
- do {
- /* get some compressed data from input file */
- strm.avail_in = fread(input, 1, CHUNK, in);
- if (ferror(in)) {
- ret = Z_ERRNO;
- goto build_index_error;
- }
- if (strm.avail_in == 0) {
- ret = Z_DATA_ERROR;
- goto build_index_error;
- }
- strm.next_in = input;
-
- /* process all of that, or until end of stream */
- do {
- /* reset sliding window if necessary */
- if (strm.avail_out == 0) {
- strm.avail_out = WINSIZE;
- strm.next_out = window;
- }
-
- /* inflate until out of input, output, or at end of block --
- update the total input and output counters */
- totin += strm.avail_in;
- totout += strm.avail_out;
- ret = inflate(&strm, Z_BLOCK); /* return at end of block */
- totin -= strm.avail_in;
- totout -= strm.avail_out;
- if (ret == Z_NEED_DICT)
- ret = Z_DATA_ERROR;
- if (ret == Z_MEM_ERROR || ret == Z_DATA_ERROR)
- goto build_index_error;
- if (ret == Z_STREAM_END)
- break;
-
- /* if at end of block, consider adding an index entry (note that if
- data_type indicates an end-of-block, then all of the
- uncompressed data from that block has been delivered, and none
- of the compressed data after that block has been consumed,
- except for up to seven bits) -- the totout == 0 provides an
- entry point after the zlib or gzip header, and assures that the
- index always has at least one access point; we avoid creating an
- access point after the last block by checking bit 6 of data_type
- */
- if ((strm.data_type & 128) && !(strm.data_type & 64) &&
- (totout == 0 || totout - last > span)) {
- index = addpoint(index, strm.data_type & 7, totin,
- totout, strm.avail_out, window);
- if (index == NULL) {
- ret = Z_MEM_ERROR;
- goto build_index_error;
- }
- last = totout;
- }
- } while (strm.avail_in != 0);
- } while (ret != Z_STREAM_END);
-
- /* clean up and return index (release unused entries in list) */
- (void)inflateEnd(&strm);
- index = realloc(index, sizeof(struct point) * index->have);
- index->size = index->have;
- *built = index;
- return index->size;
-
- /* return error */
- build_index_error:
- (void)inflateEnd(&strm);
- if (index != NULL)
- free_index(index);
- return ret;
-}
-
-/* Use the index to read len bytes from offset into buf, return bytes read or
- negative for error (Z_DATA_ERROR or Z_MEM_ERROR). If data is requested past
- the end of the uncompressed data, then extract() will return a value less
- than len, indicating how much as actually read into buf. This function
- should not return a data error unless the file was modified since the index
- was generated. extract() may also return Z_ERRNO if there is an error on
- reading or seeking the input file. */
-local int extract(FILE *in, struct access *index, off_t offset,
- unsigned char *buf, int len)
-{
- int ret, skip;
- z_stream strm;
- struct point *here;
- unsigned char input[CHUNK];
- unsigned char discard[WINSIZE];
-
- /* proceed only if something reasonable to do */
- if (len < 0)
- return 0;
-
- /* find where in stream to start */
- here = index->list;
- ret = index->have;
- while (--ret && here[1].out <= offset)
- here++;
-
- /* initialize file and inflate state to start there */
- strm.zalloc = Z_NULL;
- strm.zfree = Z_NULL;
- strm.opaque = Z_NULL;
- strm.avail_in = 0;
- strm.next_in = Z_NULL;
- ret = inflateInit2(&strm, -15); /* raw inflate */
- if (ret != Z_OK)
- return ret;
- ret = fseeko(in, here->in - (here->bits ? 1 : 0), SEEK_SET);
- if (ret == -1)
- goto extract_ret;
- if (here->bits) {
- ret = getc(in);
- if (ret == -1) {
- ret = ferror(in) ? Z_ERRNO : Z_DATA_ERROR;
- goto extract_ret;
- }
- (void)inflatePrime(&strm, here->bits, ret >> (8 - here->bits));
- }
- (void)inflateSetDictionary(&strm, here->window, WINSIZE);
-
- /* skip uncompressed bytes until offset reached, then satisfy request */
- offset -= here->out;
- strm.avail_in = 0;
- skip = 1; /* while skipping to offset */
- do {
- /* define where to put uncompressed data, and how much */
- if (offset == 0 && skip) { /* at offset now */
- strm.avail_out = len;
- strm.next_out = buf;
- skip = 0; /* only do this once */
- }
- if (offset > WINSIZE) { /* skip WINSIZE bytes */
- strm.avail_out = WINSIZE;
- strm.next_out = discard;
- offset -= WINSIZE;
- }
- else if (offset != 0) { /* last skip */
- strm.avail_out = (unsigned)offset;
- strm.next_out = discard;
- offset = 0;
- }
-
- /* uncompress until avail_out filled, or end of stream */
- do {
- if (strm.avail_in == 0) {
- strm.avail_in = fread(input, 1, CHUNK, in);
- if (ferror(in)) {
- ret = Z_ERRNO;
- goto extract_ret;
- }
- if (strm.avail_in == 0) {
- ret = Z_DATA_ERROR;
- goto extract_ret;
- }
- strm.next_in = input;
- }
- ret = inflate(&strm, Z_NO_FLUSH); /* normal inflate */
- if (ret == Z_NEED_DICT)
- ret = Z_DATA_ERROR;
- if (ret == Z_MEM_ERROR || ret == Z_DATA_ERROR)
- goto extract_ret;
- if (ret == Z_STREAM_END)
- break;
- } while (strm.avail_out != 0);
-
- /* if reach end of stream, then don't keep trying to get more */
- if (ret == Z_STREAM_END)
- break;
-
- /* do until offset reached and requested data read, or stream ends */
- } while (skip);
-
- /* compute number of uncompressed bytes read after offset */
- ret = skip ? 0 : len - strm.avail_out;
-
- /* clean up and return bytes read or error */
- extract_ret:
- (void)inflateEnd(&strm);
- return ret;
-}
-
-/* Demonstrate the use of build_index() and extract() by processing the file
- provided on the command line, and the extracting 16K from about 2/3rds of
- the way through the uncompressed output, and writing that to stdout. */
-int main(int argc, char **argv)
-{
- int len;
- off_t offset;
- FILE *in;
- struct access *index;
- unsigned char buf[CHUNK];
-
- /* open input file */
- if (argc != 2) {
- fprintf(stderr, "usage: zran file.gz\n");
- return 1;
- }
- in = fopen(argv[1], "rb");
- if (in == NULL) {
- fprintf(stderr, "zran: could not open %s for reading\n", argv[1]);
- return 1;
- }
-
- /* build index */
- len = build_index(in, SPAN, &index);
- if (len < 0) {
- fclose(in);
- switch (len) {
- case Z_MEM_ERROR:
- fprintf(stderr, "zran: out of memory\n");
- break;
- case Z_DATA_ERROR:
- fprintf(stderr, "zran: compressed data error in %s\n", argv[1]);
- break;
- case Z_ERRNO:
- fprintf(stderr, "zran: read error on %s\n", argv[1]);
- break;
- default:
- fprintf(stderr, "zran: error %d while building index\n", len);
- }
- return 1;
- }
- fprintf(stderr, "zran: built index with %d access points\n", len);
-
- /* use index by reading some bytes from an arbitrary offset */
- offset = (index->list[index->have - 1].out << 1) / 3;
- len = extract(in, index, offset, buf, CHUNK);
- if (len < 0)
- fprintf(stderr, "zran: extraction failed: %s error\n",
- len == Z_MEM_ERROR ? "out of memory" : "input corrupted");
- else {
- fwrite(buf, 1, len, stdout);
- fprintf(stderr, "zran: extracted %d bytes at %llu\n", len, offset);
- }
-
- /* clean up and exit */
- free_index(index);
- fclose(in);
- return 0;
-}
+++ /dev/null
-/* gzio.c -- IO on .gz files
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Compile this file with -DNO_GZCOMPRESS to avoid the compression code.
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-
-#ifdef NO_DEFLATE /* for compatibility with old definition */
-# define NO_GZCOMPRESS
-#endif
-
-#ifndef NO_DUMMY_DECL
-struct internal_state {int dummy;}; /* for buggy compilers */
-#endif
-
-#ifndef Z_BUFSIZE
-# ifdef MAXSEG_64K
-# define Z_BUFSIZE 4096 /* minimize memory usage for 16-bit DOS */
-# else
-# define Z_BUFSIZE 16384
-# endif
-#endif
-#ifndef Z_PRINTF_BUFSIZE
-# define Z_PRINTF_BUFSIZE 4096
-#endif
-
-#ifdef __MVS__
-# pragma map (fdopen , "\174\174FDOPEN")
- FILE *fdopen(int, const char *);
-#endif
-
-#ifndef STDC
-extern voidp malloc OF((uInt size));
-extern void free OF((voidpf ptr));
-#endif
-
-#define ALLOC(size) malloc(size)
-#define TRYFREE(p) {if (p) free(p);}
-
-static int const gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */
-
-/* gzip flag byte */
-/*#define ASCII_FLAG 0x01 *//* bit 0 set: file probably ascii text */
-#define HEAD_CRC 0x02 /* bit 1 set: header CRC present */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define RESERVED 0xE0 /* bits 5..7: reserved */
-
-typedef struct gz_stream {
- z_stream stream;
- int z_err; /* error code for last stream operation */
- int z_eof; /* set if end of input file */
- FILE *file; /* .gz file */
- Byte *inbuf; /* input buffer */
- Byte *outbuf; /* output buffer */
- uLong crc; /* crc32 of uncompressed data */
- char *msg; /* error message */
- char *path; /* path name for debugging only */
- int transparent; /* 1 if input file is not a .gz file */
- char mode; /* 'w' or 'r' */
- z_off_t start; /* start of compressed data in file (header skipped) */
- z_off_t in; /* bytes into deflate or inflate */
- z_off_t out; /* bytes out of deflate or inflate */
- int back; /* one character push-back */
- int last; /* true if push-back is last character */
-} gz_stream;
-
-
-local gzFile gz_open OF((const char *path, const char *mode, int fd));
-local int do_flush OF((gzFile file, int flush));
-local int get_byte OF((gz_stream *s));
-local void check_header OF((gz_stream *s));
-local int destroy OF((gz_stream *s));
-local void putLong OF((FILE *file, uLong x));
-local uLong getLong OF((gz_stream *s));
-
-/* ===========================================================================
- Opens a gzip (.gz) file for reading or writing. The mode parameter
- is as in fopen ("rb" or "wb"). The file is given either by file descriptor
- or path name (if fd == -1).
- gz_open returns NULL if the file could not be opened or if there was
- insufficient memory to allocate the (de)compression state; errno
- can be checked to distinguish the two cases (if errno is zero, the
- zlib error is Z_MEM_ERROR).
-*/
-local gzFile gz_open (path, mode, fd)
- const char *path;
- const char *mode;
- int fd;
-{
- int err;
- int level = Z_DEFAULT_COMPRESSION; /* compression level */
- int strategy = Z_DEFAULT_STRATEGY; /* compression strategy */
- const char *p = mode;
- gz_stream *s;
- char fmode[80]; /* copy of mode, without the compression level */
- char *m = fmode;
-
- if (!path || !mode) return Z_NULL;
-
- s = (gz_stream *)ALLOC(sizeof(gz_stream));
- if (!s) return Z_NULL;
-
- s->stream.zalloc = (alloc_func)0;
- s->stream.zfree = (free_func)0;
- s->stream.opaque = (voidpf)0;
- s->stream.next_in = s->inbuf = Z_NULL;
- s->stream.next_out = s->outbuf = Z_NULL;
- s->stream.avail_in = s->stream.avail_out = 0;
- s->file = NULL;
- s->z_err = Z_OK;
- s->z_eof = 0;
- s->in = 0;
- s->out = 0;
- s->back = EOF;
- s->crc = crc32(0L, Z_NULL, 0);
- s->msg = NULL;
- s->transparent = 0;
-
- s->path = (char*)ALLOC(strlen(path)+1);
- if (s->path == NULL) {
- return destroy(s), (gzFile)Z_NULL;
- }
- strcpy(s->path, path); /* do this early for debugging */
-
- s->mode = '\0';
- do {
- if (*p == 'r') s->mode = 'r';
- if (*p == 'w' || *p == 'a') s->mode = 'w';
- if (*p >= '0' && *p <= '9') {
- level = *p - '0';
- } else if (*p == 'f') {
- strategy = Z_FILTERED;
- } else if (*p == 'h') {
- strategy = Z_HUFFMAN_ONLY;
- } else if (*p == 'R') {
- strategy = Z_RLE;
- } else {
- *m++ = *p; /* copy the mode */
- }
- } while (*p++ && m != fmode + sizeof(fmode));
- if (s->mode == '\0') return destroy(s), (gzFile)Z_NULL;
-
- if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
- err = Z_STREAM_ERROR;
-#else
- err = deflateInit2(&(s->stream), level,
- Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, strategy);
- /* windowBits is passed < 0 to suppress zlib header */
-
- s->stream.next_out = s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
-#endif
- if (err != Z_OK || s->outbuf == Z_NULL) {
- return destroy(s), (gzFile)Z_NULL;
- }
- } else {
- s->stream.next_in = s->inbuf = (Byte*)ALLOC(Z_BUFSIZE);
-
- err = inflateInit2(&(s->stream), -MAX_WBITS);
- /* windowBits is passed < 0 to tell that there is no zlib header.
- * Note that in this case inflate *requires* an extra "dummy" byte
- * after the compressed stream in order to complete decompression and
- * return Z_STREAM_END. Here the gzip CRC32 ensures that 4 bytes are
- * present after the compressed stream.
- */
- if (err != Z_OK || s->inbuf == Z_NULL) {
- return destroy(s), (gzFile)Z_NULL;
- }
- }
- s->stream.avail_out = Z_BUFSIZE;
-
- errno = 0;
- s->file = fd < 0 ? F_OPEN(path, fmode) : (FILE*)fdopen(fd, fmode);
-
- if (s->file == NULL) {
- return destroy(s), (gzFile)Z_NULL;
- }
- if (s->mode == 'w') {
- /* Write a very simple .gz header:
- */
- fprintf(s->file, "%c%c%c%c%c%c%c%c%c%c", gz_magic[0], gz_magic[1],
- Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE);
- s->start = 10L;
- /* We use 10L instead of ftell(s->file) to because ftell causes an
- * fflush on some systems. This version of the library doesn't use
- * start anyway in write mode, so this initialization is not
- * necessary.
- */
- } else {
- check_header(s); /* skip the .gz header */
- s->start = ftell(s->file) - s->stream.avail_in;
- }
-
- return (gzFile)s;
-}
-
-/* ===========================================================================
- Opens a gzip (.gz) file for reading or writing.
-*/
-gzFile ZEXPORT gzopen (path, mode)
- const char *path;
- const char *mode;
-{
- return gz_open (path, mode, -1);
-}
-
-/* ===========================================================================
- Associate a gzFile with the file descriptor fd. fd is not dup'ed here
- to mimic the behavio(u)r of fdopen.
-*/
-gzFile ZEXPORT gzdopen (fd, mode)
- int fd;
- const char *mode;
-{
- char name[46]; /* allow for up to 128-bit integers */
-
- if (fd < 0) return (gzFile)Z_NULL;
- sprintf(name, "<fd:%d>", fd); /* for debugging */
-
- return gz_open (name, mode, fd);
-}
-
-/* ===========================================================================
- * Update the compression level and strategy
- */
-int ZEXPORT gzsetparams (file, level, strategy)
- gzFile file;
- int level;
- int strategy;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
- /* Make room to allow flushing */
- if (s->stream.avail_out == 0) {
-
- s->stream.next_out = s->outbuf;
- if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {
- s->z_err = Z_ERRNO;
- }
- s->stream.avail_out = Z_BUFSIZE;
- }
-
- return deflateParams (&(s->stream), level, strategy);
-}
-
-/* ===========================================================================
- Read a byte from a gz_stream; update next_in and avail_in. Return EOF
- for end of file.
- IN assertion: the stream s has been successfully opened for reading.
-*/
-local int get_byte(s)
- gz_stream *s;
-{
- if (s->z_eof) return EOF;
- if (s->stream.avail_in == 0) {
- errno = 0;
- s->stream.avail_in = (uInt)fread(s->inbuf, 1, Z_BUFSIZE, s->file);
- if (s->stream.avail_in == 0) {
- s->z_eof = 1;
- if (ferror(s->file)) s->z_err = Z_ERRNO;
- return EOF;
- }
- s->stream.next_in = s->inbuf;
- }
- s->stream.avail_in--;
- return *(s->stream.next_in)++;
-}
-
-/* ===========================================================================
- Check the gzip header of a gz_stream opened for reading. Set the stream
- mode to transparent if the gzip magic header is not present; set s->err
- to Z_DATA_ERROR if the magic header is present but the rest of the header
- is incorrect.
- IN assertion: the stream s has already been created successfully;
- s->stream.avail_in is zero for the first time, but may be non-zero
- for concatenated .gz files.
-*/
-local void check_header(s)
- gz_stream *s;
-{
- int method; /* method byte */
- int flags; /* flags byte */
- uInt len;
- int c;
-
- /* Assure two bytes in the buffer so we can peek ahead -- handle case
- where first byte of header is at the end of the buffer after the last
- gzip segment */
- len = s->stream.avail_in;
- if (len < 2) {
- if (len) s->inbuf[0] = s->stream.next_in[0];
- errno = 0;
- len = (uInt)fread(s->inbuf + len, 1, Z_BUFSIZE >> len, s->file);
- if (len == 0 && ferror(s->file)) s->z_err = Z_ERRNO;
- s->stream.avail_in += len;
- s->stream.next_in = s->inbuf;
- if (s->stream.avail_in < 2) {
- s->transparent = s->stream.avail_in;
- return;
- }
- }
-
- /* Peek ahead to check the gzip magic header */
- if (s->stream.next_in[0] != gz_magic[0] ||
- s->stream.next_in[1] != gz_magic[1]) {
- s->transparent = 1;
- return;
- }
- s->stream.avail_in -= 2;
- s->stream.next_in += 2;
-
- /* Check the rest of the gzip header */
- method = get_byte(s);
- flags = get_byte(s);
- if (method != Z_DEFLATED || (flags & RESERVED) != 0) {
- s->z_err = Z_DATA_ERROR;
- return;
- }
-
- /* Discard time, xflags and OS code: */
- for (len = 0; len < 6; len++) (void)get_byte(s);
-
- if ((flags & EXTRA_FIELD) != 0) { /* skip the extra field */
- len = (uInt)get_byte(s);
- len += ((uInt)get_byte(s))<<8;
- /* len is garbage if EOF but the loop below will quit anyway */
- while (len-- != 0 && get_byte(s) != EOF) ;
- }
- if ((flags & ORIG_NAME) != 0) { /* skip the original file name */
- while ((c = get_byte(s)) != 0 && c != EOF) ;
- }
- if ((flags & COMMENT) != 0) { /* skip the .gz file comment */
- while ((c = get_byte(s)) != 0 && c != EOF) ;
- }
- if ((flags & HEAD_CRC) != 0) { /* skip the header crc */
- for (len = 0; len < 2; len++) (void)get_byte(s);
- }
- s->z_err = s->z_eof ? Z_DATA_ERROR : Z_OK;
-}
-
- /* ===========================================================================
- * Cleanup then free the given gz_stream. Return a zlib error code.
- Try freeing in the reverse order of allocations.
- */
-local int destroy (s)
- gz_stream *s;
-{
- int err = Z_OK;
-
- if (!s) return Z_STREAM_ERROR;
-
- TRYFREE(s->msg);
-
- if (s->stream.state != NULL) {
- if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
- err = Z_STREAM_ERROR;
-#else
- err = deflateEnd(&(s->stream));
-#endif
- } else if (s->mode == 'r') {
- err = inflateEnd(&(s->stream));
- }
- }
- if (s->file != NULL && fclose(s->file)) {
-#ifdef ESPIPE
- if (errno != ESPIPE) /* fclose is broken for pipes in HP/UX */
-#endif
- err = Z_ERRNO;
- }
- if (s->z_err < 0) err = s->z_err;
-
- TRYFREE(s->inbuf);
- TRYFREE(s->outbuf);
- TRYFREE(s->path);
- TRYFREE(s);
- return err;
-}
-
-/* ===========================================================================
- Reads the given number of uncompressed bytes from the compressed file.
- gzread returns the number of bytes actually read (0 for end of file).
-*/
-int ZEXPORT gzread (file, buf, len)
- gzFile file;
- voidp buf;
- unsigned len;
-{
- gz_stream *s = (gz_stream*)file;
- Bytef *start = (Bytef*)buf; /* starting point for crc computation */
- Byte *next_out; /* == stream.next_out but not forced far (for MSDOS) */
-
- if (s == NULL || s->mode != 'r') return Z_STREAM_ERROR;
-
- if (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO) return -1;
- if (s->z_err == Z_STREAM_END) return 0; /* EOF */
-
- next_out = (Byte*)buf;
- s->stream.next_out = (Bytef*)buf;
- s->stream.avail_out = len;
-
- if (s->stream.avail_out && s->back != EOF) {
- *next_out++ = s->back;
- s->stream.next_out++;
- s->stream.avail_out--;
- s->back = EOF;
- s->out++;
- start++;
- if (s->last) {
- s->z_err = Z_STREAM_END;
- return 1;
- }
- }
-
- while (s->stream.avail_out != 0) {
-
- if (s->transparent) {
- /* Copy first the lookahead bytes: */
- uInt n = s->stream.avail_in;
- if (n > s->stream.avail_out) n = s->stream.avail_out;
- if (n > 0) {
- zmemcpy(s->stream.next_out, s->stream.next_in, n);
- next_out += n;
- s->stream.next_out = next_out;
- s->stream.next_in += n;
- s->stream.avail_out -= n;
- s->stream.avail_in -= n;
- }
- if (s->stream.avail_out > 0) {
- s->stream.avail_out -=
- (uInt)fread(next_out, 1, s->stream.avail_out, s->file);
- }
- len -= s->stream.avail_out;
- s->in += len;
- s->out += len;
- if (len == 0) s->z_eof = 1;
- return (int)len;
- }
- if (s->stream.avail_in == 0 && !s->z_eof) {
-
- errno = 0;
- s->stream.avail_in = (uInt)fread(s->inbuf, 1, Z_BUFSIZE, s->file);
- if (s->stream.avail_in == 0) {
- s->z_eof = 1;
- if (ferror(s->file)) {
- s->z_err = Z_ERRNO;
- break;
- }
- }
- s->stream.next_in = s->inbuf;
- }
- s->in += s->stream.avail_in;
- s->out += s->stream.avail_out;
- s->z_err = inflate(&(s->stream), Z_NO_FLUSH);
- s->in -= s->stream.avail_in;
- s->out -= s->stream.avail_out;
-
- if (s->z_err == Z_STREAM_END) {
- /* Check CRC and original size */
- s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
- start = s->stream.next_out;
-
- if (getLong(s) != s->crc) {
- s->z_err = Z_DATA_ERROR;
- } else {
- (void)getLong(s);
- /* The uncompressed length returned by above getlong() may be
- * different from s->out in case of concatenated .gz files.
- * Check for such files:
- */
- check_header(s);
- if (s->z_err == Z_OK) {
- inflateReset(&(s->stream));
- s->crc = crc32(0L, Z_NULL, 0);
- }
- }
- }
- if (s->z_err != Z_OK || s->z_eof) break;
- }
- s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
-
- if (len == s->stream.avail_out &&
- (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO))
- return -1;
- return (int)(len - s->stream.avail_out);
-}
-
-
-/* ===========================================================================
- Reads one byte from the compressed file. gzgetc returns this byte
- or -1 in case of end of file or error.
-*/
-int ZEXPORT gzgetc(file)
- gzFile file;
-{
- unsigned char c;
-
- return gzread(file, &c, 1) == 1 ? c : -1;
-}
-
-
-/* ===========================================================================
- Push one byte back onto the stream.
-*/
-int ZEXPORT gzungetc(c, file)
- int c;
- gzFile file;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || s->mode != 'r' || c == EOF || s->back != EOF) return EOF;
- s->back = c;
- s->out--;
- s->last = (s->z_err == Z_STREAM_END);
- if (s->last) s->z_err = Z_OK;
- s->z_eof = 0;
- return c;
-}
-
-
-/* ===========================================================================
- Reads bytes from the compressed file until len-1 characters are
- read, or a newline character is read and transferred to buf, or an
- end-of-file condition is encountered. The string is then terminated
- with a null character.
- gzgets returns buf, or Z_NULL in case of error.
-
- The current implementation is not optimized at all.
-*/
-char * ZEXPORT gzgets(file, buf, len)
- gzFile file;
- char *buf;
- int len;
-{
- char *b = buf;
- if (buf == Z_NULL || len <= 0) return Z_NULL;
-
- while (--len > 0 && gzread(file, buf, 1) == 1 && *buf++ != '\n') ;
- *buf = '\0';
- return b == buf && len > 0 ? Z_NULL : b;
-}
-
-
-#ifndef NO_GZCOMPRESS
-/* ===========================================================================
- Writes the given number of uncompressed bytes into the compressed file.
- gzwrite returns the number of bytes actually written (0 in case of error).
-*/
-int ZEXPORT gzwrite (file, buf, len)
- gzFile file;
- voidpc buf;
- unsigned len;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
- s->stream.next_in = (const Bytef*)buf;
- s->stream.avail_in = len;
-
- while (s->stream.avail_in != 0) {
-
- if (s->stream.avail_out == 0) {
-
- s->stream.next_out = s->outbuf;
- if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {
- s->z_err = Z_ERRNO;
- break;
- }
- s->stream.avail_out = Z_BUFSIZE;
- }
- s->in += s->stream.avail_in;
- s->out += s->stream.avail_out;
- s->z_err = deflate(&(s->stream), Z_NO_FLUSH);
- s->in -= s->stream.avail_in;
- s->out -= s->stream.avail_out;
- if (s->z_err != Z_OK) break;
- }
- s->crc = crc32(s->crc, (const Bytef *)buf, len);
-
- return (int)(len - s->stream.avail_in);
-}
-
-
-/* ===========================================================================
- Converts, formats, and writes the args to the compressed file under
- control of the format string, as in fprintf. gzprintf returns the number of
- uncompressed bytes actually written (0 in case of error).
-*/
-#ifdef STDC
-#include <stdarg.h>
-
-int ZEXPORTVA gzprintf (gzFile file, const char *format, /* args */ ...)
-{
- char buf[Z_PRINTF_BUFSIZE];
- va_list va;
- int len;
-
- buf[sizeof(buf) - 1] = 0;
- va_start(va, format);
-#ifdef NO_vsnprintf
-# ifdef HAS_vsprintf_void
- (void)vsprintf(buf, format, va);
- va_end(va);
- for (len = 0; len < sizeof(buf); len++)
- if (buf[len] == 0) break;
-# else
- len = vsprintf(buf, format, va);
- va_end(va);
-# endif
-#else
-# ifdef HAS_vsnprintf_void
- (void)vsnprintf(buf, sizeof(buf), format, va);
- va_end(va);
- len = strlen(buf);
-# else
- len = vsnprintf(buf, sizeof(buf), format, va);
- va_end(va);
-# endif
-#endif
- if (len <= 0 || len >= (int)sizeof(buf) || buf[sizeof(buf) - 1] != 0)
- return 0;
- return gzwrite(file, buf, (unsigned)len);
-}
-#else /* not ANSI C */
-
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
- a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
- gzFile file;
- const char *format;
- int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
- a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
-{
- char buf[Z_PRINTF_BUFSIZE];
- int len;
-
- buf[sizeof(buf) - 1] = 0;
-#ifdef NO_snprintf
-# ifdef HAS_sprintf_void
- sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
- for (len = 0; len < sizeof(buf); len++)
- if (buf[len] == 0) break;
-# else
- len = sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-# endif
-#else
-# ifdef HAS_snprintf_void
- snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
- len = strlen(buf);
-# else
- len = snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-# endif
-#endif
- if (len <= 0 || len >= sizeof(buf) || buf[sizeof(buf) - 1] != 0)
- return 0;
- return gzwrite(file, buf, len);
-}
-#endif
-
-/* ===========================================================================
- Writes c, converted to an unsigned char, into the compressed file.
- gzputc returns the value that was written, or -1 in case of error.
-*/
-int ZEXPORT gzputc(file, c)
- gzFile file;
- int c;
-{
- unsigned char cc = (unsigned char) c; /* required for big endian systems */
-
- return gzwrite(file, &cc, 1) == 1 ? (int)cc : -1;
-}
-
-
-/* ===========================================================================
- Writes the given null-terminated string to the compressed file, excluding
- the terminating null character.
- gzputs returns the number of characters written, or -1 in case of error.
-*/
-int ZEXPORT gzputs(file, s)
- gzFile file;
- const char *s;
-{
- return gzwrite(file, (voidpc)s, (unsigned)strlen(s));
-}
-
-
-/* ===========================================================================
- Flushes all pending output into the compressed file. The parameter
- flush is as in the deflate() function.
-*/
-local int do_flush (file, flush)
- gzFile file;
- int flush;
-{
- uInt len;
- int done = 0;
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
- s->stream.avail_in = 0; /* should be zero already anyway */
-
- for (;;) {
- len = Z_BUFSIZE - s->stream.avail_out;
-
- if (len != 0) {
- if ((uInt)fwrite(s->outbuf, 1, len, s->file) != len) {
- s->z_err = Z_ERRNO;
- return Z_ERRNO;
- }
- s->stream.next_out = s->outbuf;
- s->stream.avail_out = Z_BUFSIZE;
- }
- if (done) break;
- s->out += s->stream.avail_out;
- s->z_err = deflate(&(s->stream), flush);
- s->out -= s->stream.avail_out;
-
- /* Ignore the second of two consecutive flushes: */
- if (len == 0 && s->z_err == Z_BUF_ERROR) s->z_err = Z_OK;
-
- /* deflate has finished flushing only when it hasn't used up
- * all the available space in the output buffer:
- */
- done = (s->stream.avail_out != 0 || s->z_err == Z_STREAM_END);
-
- if (s->z_err != Z_OK && s->z_err != Z_STREAM_END) break;
- }
- return s->z_err == Z_STREAM_END ? Z_OK : s->z_err;
-}
-
-int ZEXPORT gzflush (file, flush)
- gzFile file;
- int flush;
-{
- gz_stream *s = (gz_stream*)file;
- int err = do_flush (file, flush);
-
- if (err) return err;
- fflush(s->file);
- return s->z_err == Z_STREAM_END ? Z_OK : s->z_err;
-}
-#endif /* NO_GZCOMPRESS */
-
-/* ===========================================================================
- Sets the starting position for the next gzread or gzwrite on the given
- compressed file. The offset represents a number of bytes in the
- gzseek returns the resulting offset location as measured in bytes from
- the beginning of the uncompressed stream, or -1 in case of error.
- SEEK_END is not implemented, returns error.
- In this version of the library, gzseek can be extremely slow.
-*/
-z_off_t ZEXPORT gzseek (file, offset, whence)
- gzFile file;
- z_off_t offset;
- int whence;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || whence == SEEK_END ||
- s->z_err == Z_ERRNO || s->z_err == Z_DATA_ERROR) {
- return -1L;
- }
-
- if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
- return -1L;
-#else
- if (whence == SEEK_SET) {
- offset -= s->in;
- }
- if (offset < 0) return -1L;
-
- /* At this point, offset is the number of zero bytes to write. */
- if (s->inbuf == Z_NULL) {
- s->inbuf = (Byte*)ALLOC(Z_BUFSIZE); /* for seeking */
- if (s->inbuf == Z_NULL) return -1L;
- zmemzero(s->inbuf, Z_BUFSIZE);
- }
- while (offset > 0) {
- uInt size = Z_BUFSIZE;
- if (offset < Z_BUFSIZE) size = (uInt)offset;
-
- size = gzwrite(file, s->inbuf, size);
- if (size == 0) return -1L;
-
- offset -= size;
- }
- return s->in;
-#endif
- }
- /* Rest of function is for reading only */
-
- /* compute absolute position */
- if (whence == SEEK_CUR) {
- offset += s->out;
- }
- if (offset < 0) return -1L;
-
- if (s->transparent) {
- /* map to fseek */
- s->back = EOF;
- s->stream.avail_in = 0;
- s->stream.next_in = s->inbuf;
- if (fseek(s->file, offset, SEEK_SET) < 0) return -1L;
-
- s->in = s->out = offset;
- return offset;
- }
-
- /* For a negative seek, rewind and use positive seek */
- if (offset >= s->out) {
- offset -= s->out;
- } else if (gzrewind(file) < 0) {
- return -1L;
- }
- /* offset is now the number of bytes to skip. */
-
- if (offset != 0 && s->outbuf == Z_NULL) {
- s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
- if (s->outbuf == Z_NULL) return -1L;
- }
- if (offset && s->back != EOF) {
- s->back = EOF;
- s->out++;
- offset--;
- if (s->last) s->z_err = Z_STREAM_END;
- }
- while (offset > 0) {
- int size = Z_BUFSIZE;
- if (offset < Z_BUFSIZE) size = (int)offset;
-
- size = gzread(file, s->outbuf, (uInt)size);
- if (size <= 0) return -1L;
- offset -= size;
- }
- return s->out;
-}
-
-/* ===========================================================================
- Rewinds input file.
-*/
-int ZEXPORT gzrewind (file)
- gzFile file;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || s->mode != 'r') return -1;
-
- s->z_err = Z_OK;
- s->z_eof = 0;
- s->back = EOF;
- s->stream.avail_in = 0;
- s->stream.next_in = s->inbuf;
- s->crc = crc32(0L, Z_NULL, 0);
- if (!s->transparent) (void)inflateReset(&s->stream);
- s->in = 0;
- s->out = 0;
- return fseek(s->file, s->start, SEEK_SET);
-}
-
-/* ===========================================================================
- Returns the starting position for the next gzread or gzwrite on the
- given compressed file. This position represents a number of bytes in the
- uncompressed data stream.
-*/
-z_off_t ZEXPORT gztell (file)
- gzFile file;
-{
- return gzseek(file, 0L, SEEK_CUR);
-}
-
-/* ===========================================================================
- Returns 1 when EOF has previously been detected reading the given
- input stream, otherwise zero.
-*/
-int ZEXPORT gzeof (file)
- gzFile file;
-{
- gz_stream *s = (gz_stream*)file;
-
- /* With concatenated compressed files that can have embedded
- * crc trailers, z_eof is no longer the only/best indicator of EOF
- * on a gz_stream. Handle end-of-stream error explicitly here.
- */
- if (s == NULL || s->mode != 'r') return 0;
- if (s->z_eof) return 1;
- return s->z_err == Z_STREAM_END;
-}
-
-/* ===========================================================================
- Returns 1 if reading and doing so transparently, otherwise zero.
-*/
-int ZEXPORT gzdirect (file)
- gzFile file;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL || s->mode != 'r') return 0;
- return s->transparent;
-}
-
-/* ===========================================================================
- Outputs a long in LSB order to the given file
-*/
-local void putLong (file, x)
- FILE *file;
- uLong x;
-{
- int n;
- for (n = 0; n < 4; n++) {
- fputc((int)(x & 0xff), file);
- x >>= 8;
- }
-}
-
-/* ===========================================================================
- Reads a long in LSB order from the given gz_stream. Sets z_err in case
- of error.
-*/
-local uLong getLong (s)
- gz_stream *s;
-{
- uLong x = (uLong)get_byte(s);
- int c;
-
- x += ((uLong)get_byte(s))<<8;
- x += ((uLong)get_byte(s))<<16;
- c = get_byte(s);
- if (c == EOF) s->z_err = Z_DATA_ERROR;
- x += ((uLong)c)<<24;
- return x;
-}
-
-/* ===========================================================================
- Flushes all pending output if necessary, closes the compressed file
- and deallocates all the (de)compression state.
-*/
-int ZEXPORT gzclose (file)
- gzFile file;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL) return Z_STREAM_ERROR;
-
- if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
- return Z_STREAM_ERROR;
-#else
- if (do_flush (file, Z_FINISH) != Z_OK)
- return destroy((gz_stream*)file);
-
- putLong (s->file, s->crc);
- putLong (s->file, (uLong)(s->in & 0xffffffff));
-#endif
- }
- return destroy((gz_stream*)file);
-}
-
-#ifdef STDC
-# define zstrerror(errnum) strerror(errnum)
-#else
-# define zstrerror(errnum) ""
-#endif
-
-/* ===========================================================================
- Returns the error message for the last error which occurred on the
- given compressed file. errnum is set to zlib error number. If an
- error occurred in the file system and not in the compression library,
- errnum is set to Z_ERRNO and the application may consult errno
- to get the exact error code.
-*/
-const char * ZEXPORT gzerror (file, errnum)
- gzFile file;
- int *errnum;
-{
- const char *m;
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL) {
- *errnum = Z_STREAM_ERROR;
- return (const char*)ERR_MSG(Z_STREAM_ERROR);
- }
- *errnum = s->z_err;
- if (*errnum == Z_OK) return (const char*)"";
-
- m = (*errnum == Z_ERRNO ? zstrerror(errno) : s->stream.msg);
-
- if (m == NULL || *m == '\0') m = ERR_MSG(s->z_err);
-
- TRYFREE(s->msg);
- s->msg = (char*)ALLOC(strlen(s->path) + strlen(m) + 3);
- if (s->msg == Z_NULL) return (const char*)ERR_MSG(Z_MEM_ERROR);
- strcpy(s->msg, s->path);
- strcat(s->msg, ": ");
- strcat(s->msg, m);
- return (const char*)s->msg;
-}
-
-/* ===========================================================================
- Clear the error and end-of-file flags, and do the same for the real file.
-*/
-void ZEXPORT gzclearerr (file)
- gzFile file;
-{
- gz_stream *s = (gz_stream*)file;
-
- if (s == NULL) return;
- if (s->z_err != Z_STREAM_END) s->z_err = Z_OK;
- s->z_eof = 0;
- clearerr(s->file);
-}
+++ /dev/null
-/* infback.c -- inflate using a call-back interface
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- This code is largely copied from inflate.c. Normally either infback.o or
- inflate.o would be linked into an application--not both. The interface
- with inffast.c is retained so that optimized assembler-coded versions of
- inflate_fast() can be used with either inflate.c or infback.c.
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-/* function prototypes */
-local void fixedtables OF((struct inflate_state FAR *state));
-
-/*
- strm provides memory allocation functions in zalloc and zfree, or
- Z_NULL to use the library memory allocation functions.
-
- windowBits is in the range 8..15, and window is a user-supplied
- window and output buffer that is 2**windowBits bytes.
- */
-int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
-z_streamp strm;
-int windowBits;
-unsigned char FAR *window;
-const char *version;
-int stream_size;
-{
- struct inflate_state FAR *state;
-
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
- stream_size != (int)(sizeof(z_stream)))
- return Z_VERSION_ERROR;
- if (strm == Z_NULL || window == Z_NULL ||
- windowBits < 8 || windowBits > 15)
- return Z_STREAM_ERROR;
- strm->msg = Z_NULL; /* in case we return an error */
- if (strm->zalloc == (alloc_func)0) {
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
- }
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;
- state = (struct inflate_state FAR *)ZALLOC(strm, 1,
- sizeof(struct inflate_state));
- if (state == Z_NULL) return Z_MEM_ERROR;
- Tracev((stderr, "inflate: allocated\n"));
- strm->state = (struct internal_state FAR *)state;
- state->dmax = 32768U;
- state->wbits = windowBits;
- state->wsize = 1U << windowBits;
- state->window = window;
- state->write = 0;
- state->whave = 0;
- return Z_OK;
-}
-
-/*
- Return state with length and distance decoding tables and index sizes set to
- fixed code decoding. Normally this returns fixed tables from inffixed.h.
- If BUILDFIXED is defined, then instead this routine builds the tables the
- first time it's called, and returns those tables the first time and
- thereafter. This reduces the size of the code by about 2K bytes, in
- exchange for a little execution time. However, BUILDFIXED should not be
- used for threaded applications, since the rewriting of the tables and virgin
- may not be thread-safe.
- */
-local void fixedtables(state)
-struct inflate_state FAR *state;
-{
-#ifdef BUILDFIXED
- static int virgin = 1;
- static code *lenfix, *distfix;
- static code fixed[544];
-
- /* build fixed huffman tables if first call (may not be thread safe) */
- if (virgin) {
- unsigned sym, bits;
- static code *next;
-
- /* literal/length table */
- sym = 0;
- while (sym < 144) state->lens[sym++] = 8;
- while (sym < 256) state->lens[sym++] = 9;
- while (sym < 280) state->lens[sym++] = 7;
- while (sym < 288) state->lens[sym++] = 8;
- next = fixed;
- lenfix = next;
- bits = 9;
- inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
-
- /* distance table */
- sym = 0;
- while (sym < 32) state->lens[sym++] = 5;
- distfix = next;
- bits = 5;
- inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
-
- /* do this just once */
- virgin = 0;
- }
-#else /* !BUILDFIXED */
-# include "inffixed.h"
-#endif /* BUILDFIXED */
- state->lencode = lenfix;
- state->lenbits = 9;
- state->distcode = distfix;
- state->distbits = 5;
-}
-
-/* Macros for inflateBack(): */
-
-/* Load returned state from inflate_fast() */
-#define LOAD() \
- do { \
- put = strm->next_out; \
- left = strm->avail_out; \
- next = strm->next_in; \
- have = strm->avail_in; \
- hold = state->hold; \
- bits = state->bits; \
- } while (0)
-
-/* Set state from registers for inflate_fast() */
-#define RESTORE() \
- do { \
- strm->next_out = put; \
- strm->avail_out = left; \
- strm->next_in = next; \
- strm->avail_in = have; \
- state->hold = hold; \
- state->bits = bits; \
- } while (0)
-
-/* Clear the input bit accumulator */
-#define INITBITS() \
- do { \
- hold = 0; \
- bits = 0; \
- } while (0)
-
-/* Assure that some input is available. If input is requested, but denied,
- then return a Z_BUF_ERROR from inflateBack(). */
-#define PULL() \
- do { \
- if (have == 0) { \
- have = in(in_desc, &next); \
- if (have == 0) { \
- next = Z_NULL; \
- ret = Z_BUF_ERROR; \
- goto inf_leave; \
- } \
- } \
- } while (0)
-
-/* Get a byte of input into the bit accumulator, or return from inflateBack()
- with an error if there is no input available. */
-#define PULLBYTE() \
- do { \
- PULL(); \
- have--; \
- hold += (unsigned long)(*next++) << bits; \
- bits += 8; \
- } while (0)
-
-/* Assure that there are at least n bits in the bit accumulator. If there is
- not enough available input to do that, then return from inflateBack() with
- an error. */
-#define NEEDBITS(n) \
- do { \
- while (bits < (unsigned)(n)) \
- PULLBYTE(); \
- } while (0)
-
-/* Return the low n bits of the bit accumulator (n < 16) */
-#define BITS(n) \
- ((unsigned)hold & ((1U << (n)) - 1))
-
-/* Remove n bits from the bit accumulator */
-#define DROPBITS(n) \
- do { \
- hold >>= (n); \
- bits -= (unsigned)(n); \
- } while (0)
-
-/* Remove zero to seven bits as needed to go to a byte boundary */
-#define BYTEBITS() \
- do { \
- hold >>= bits & 7; \
- bits -= bits & 7; \
- } while (0)
-
-/* Assure that some output space is available, by writing out the window
- if it's full. If the write fails, return from inflateBack() with a
- Z_BUF_ERROR. */
-#define ROOM() \
- do { \
- if (left == 0) { \
- put = state->window; \
- left = state->wsize; \
- state->whave = left; \
- if (out(out_desc, put, left)) { \
- ret = Z_BUF_ERROR; \
- goto inf_leave; \
- } \
- } \
- } while (0)
-
-/*
- strm provides the memory allocation functions and window buffer on input,
- and provides information on the unused input on return. For Z_DATA_ERROR
- returns, strm will also provide an error message.
-
- in() and out() are the call-back input and output functions. When
- inflateBack() needs more input, it calls in(). When inflateBack() has
- filled the window with output, or when it completes with data in the
- window, it calls out() to write out the data. The application must not
- change the provided input until in() is called again or inflateBack()
- returns. The application must not change the window/output buffer until
- inflateBack() returns.
-
- in() and out() are called with a descriptor parameter provided in the
- inflateBack() call. This parameter can be a structure that provides the
- information required to do the read or write, as well as accumulated
- information on the input and output such as totals and check values.
-
- in() should return zero on failure. out() should return non-zero on
- failure. If either in() or out() fails, than inflateBack() returns a
- Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
- was in() or out() that caused in the error. Otherwise, inflateBack()
- returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
- error, or Z_MEM_ERROR if it could not allocate memory for the state.
- inflateBack() can also return Z_STREAM_ERROR if the input parameters
- are not correct, i.e. strm is Z_NULL or the state was not initialized.
- */
-int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
-z_streamp strm;
-in_func in;
-void FAR *in_desc;
-out_func out;
-void FAR *out_desc;
-{
- struct inflate_state FAR *state;
- unsigned const char FAR *next; /* next input */
- unsigned char FAR *put; /* next output */
- unsigned have, left; /* available input and output */
- unsigned long hold; /* bit buffer */
- unsigned bits; /* bits in bit buffer */
- unsigned copy; /* number of stored or match bytes to copy */
- unsigned char FAR *from; /* where to copy match bytes from */
- code this; /* current decoding table entry */
- code last; /* parent table entry */
- unsigned len; /* length to copy for repeats, bits to drop */
- int ret; /* return code */
- static const unsigned short order[19] = /* permutation of code lengths */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
- /* Check that the strm exists and that the state was initialized */
- if (strm == Z_NULL || strm->state == Z_NULL)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
-
- /* Reset the state */
- strm->msg = Z_NULL;
- state->mode = TYPE;
- state->last = 0;
- state->whave = 0;
- next = strm->next_in;
- have = next != Z_NULL ? strm->avail_in : 0;
- hold = 0;
- bits = 0;
- put = state->window;
- left = state->wsize;
-
- /* Inflate until end of block marked as last */
- for (;;)
- switch (state->mode) {
- case TYPE:
- /* determine and dispatch block type */
- if (state->last) {
- BYTEBITS();
- state->mode = DONE;
- break;
- }
- NEEDBITS(3);
- state->last = BITS(1);
- DROPBITS(1);
- switch (BITS(2)) {
- case 0: /* stored block */
- Tracev((stderr, "inflate: stored block%s\n",
- state->last ? " (last)" : ""));
- state->mode = STORED;
- break;
- case 1: /* fixed block */
- fixedtables(state);
- Tracev((stderr, "inflate: fixed codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = LEN; /* decode codes */
- break;
- case 2: /* dynamic block */
- Tracev((stderr, "inflate: dynamic codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = TABLE;
- break;
- case 3:
- strm->msg = "invalid block type";
- state->mode = BAD_DATA;
- }
- DROPBITS(2);
- break;
-
- case STORED:
- /* get and verify stored block length */
- BYTEBITS(); /* go to byte boundary */
- NEEDBITS(32);
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
- strm->msg = "invalid stored block lengths";
- state->mode = BAD_DATA;
- break;
- }
- state->length = (unsigned)hold & 0xffff;
- Tracev((stderr, "inflate: stored length %u\n",
- state->length));
- INITBITS();
-
- /* copy stored block from input to output */
- while (state->length != 0) {
- copy = state->length;
- PULL();
- ROOM();
- if (copy > have) copy = have;
- if (copy > left) copy = left;
- zmemcpy(put, next, copy);
- have -= copy;
- next += copy;
- left -= copy;
- put += copy;
- state->length -= copy;
- }
- Tracev((stderr, "inflate: stored end\n"));
- state->mode = TYPE;
- break;
-
- case TABLE:
- /* get dynamic table entries descriptor */
- NEEDBITS(14);
- state->nlen = BITS(5) + 257;
- DROPBITS(5);
- state->ndist = BITS(5) + 1;
- DROPBITS(5);
- state->ncode = BITS(4) + 4;
- DROPBITS(4);
-#ifndef PKZIP_BUG_WORKAROUND
- if (state->nlen > 286 || state->ndist > 30) {
- strm->msg = "too many length or distance symbols";
- state->mode = BAD_DATA;
- break;
- }
-#endif
- Tracev((stderr, "inflate: table sizes ok\n"));
-
- /* get code length code lengths (not a typo) */
- state->have = 0;
- while (state->have < state->ncode) {
- NEEDBITS(3);
- state->lens[order[state->have++]] = (unsigned short)BITS(3);
- DROPBITS(3);
- }
- while (state->have < 19)
- state->lens[order[state->have++]] = 0;
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 7;
- ret = inflate_table(CODES, state->lens, 19, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = "invalid code lengths set";
- state->mode = BAD_DATA;
- break;
- }
- Tracev((stderr, "inflate: code lengths ok\n"));
-
- /* get length and distance code code lengths */
- state->have = 0;
- while (state->have < state->nlen + state->ndist) {
- for (;;) {
- this = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.val < 16) {
- NEEDBITS(this.bits);
- DROPBITS(this.bits);
- state->lens[state->have++] = this.val;
- }
- else {
- if (this.val == 16) {
- NEEDBITS(this.bits + 2);
- DROPBITS(this.bits);
- if (state->have == 0) {
- strm->msg = "invalid bit length repeat";
- state->mode = BAD_DATA;
- break;
- }
- len = (unsigned)(state->lens[state->have - 1]);
- copy = 3 + BITS(2);
- DROPBITS(2);
- }
- else if (this.val == 17) {
- NEEDBITS(this.bits + 3);
- DROPBITS(this.bits);
- len = 0;
- copy = 3 + BITS(3);
- DROPBITS(3);
- }
- else {
- NEEDBITS(this.bits + 7);
- DROPBITS(this.bits);
- len = 0;
- copy = 11 + BITS(7);
- DROPBITS(7);
- }
- if (state->have + copy > state->nlen + state->ndist) {
- strm->msg = "invalid bit length repeat";
- state->mode = BAD_DATA;
- break;
- }
- while (copy--)
- state->lens[state->have++] = (unsigned short)len;
- }
- }
-
- /* handle error breaks in while */
- if (state->mode == BAD_DATA) break;
-
- /* build code tables */
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 9;
- ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = "invalid literal/lengths set";
- state->mode = BAD_DATA;
- break;
- }
- state->distcode = (code const FAR *)(state->next);
- state->distbits = 6;
- ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
- &(state->next), &(state->distbits), state->work);
- if (ret) {
- strm->msg = "invalid distances set";
- state->mode = BAD_DATA;
- break;
- }
- Tracev((stderr, "inflate: codes ok\n"));
- state->mode = LEN;
-
- case LEN:
- /* use inflate_fast() if we have enough input and output */
- if (have >= 6 && left >= 258) {
- RESTORE();
- if (state->whave < state->wsize)
- state->whave = state->wsize - left;
- inflate_fast(strm, state->wsize);
- LOAD();
- break;
- }
-
- /* get a literal, length, or end-of-block code */
- for (;;) {
- this = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.op && (this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = state->lencode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- state->length = (unsigned)this.val;
-
- /* process literal */
- if (this.op == 0) {
- Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", this.val));
- ROOM();
- *put++ = (unsigned char)(state->length);
- left--;
- state->mode = LEN;
- break;
- }
-
- /* process end of block */
- if (this.op & 32) {
- Tracevv((stderr, "inflate: end of block\n"));
- state->mode = TYPE;
- break;
- }
-
- /* invalid code */
- if (this.op & 64) {
- strm->msg = "invalid literal/length code";
- state->mode = BAD_DATA;
- break;
- }
-
- /* length code -- get extra bits, if any */
- state->extra = (unsigned)(this.op) & 15;
- if (state->extra != 0) {
- NEEDBITS(state->extra);
- state->length += BITS(state->extra);
- DROPBITS(state->extra);
- }
- Tracevv((stderr, "inflate: length %u\n", state->length));
-
- /* get distance code */
- for (;;) {
- this = state->distcode[BITS(state->distbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if ((this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = state->distcode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- if (this.op & 64) {
- strm->msg = "invalid distance code";
- state->mode = BAD_DATA;
- break;
- }
- state->offset = (unsigned)this.val;
-
- /* get distance extra bits, if any */
- state->extra = (unsigned)(this.op) & 15;
- if (state->extra != 0) {
- NEEDBITS(state->extra);
- state->offset += BITS(state->extra);
- DROPBITS(state->extra);
- }
- if (state->offset > state->wsize - (state->whave < state->wsize ?
- left : 0)) {
- strm->msg = "invalid distance too far back";
- state->mode = BAD_DATA;
- break;
- }
- Tracevv((stderr, "inflate: distance %u\n", state->offset));
-
- /* copy match from window to output */
- do {
- ROOM();
- copy = state->wsize - state->offset;
- if (copy < left) {
- from = put + copy;
- copy = left - copy;
- }
- else {
- from = put - state->offset;
- copy = left;
- }
- if (copy > state->length) copy = state->length;
- state->length -= copy;
- left -= copy;
- do {
- *put++ = *from++;
- } while (--copy);
- } while (state->length != 0);
- break;
-
- case DONE:
- /* inflate stream terminated properly -- write leftover output */
- ret = Z_STREAM_END;
- if (left < state->wsize) {
- if (out(out_desc, state->window, state->wsize - left))
- ret = Z_BUF_ERROR;
- }
- goto inf_leave;
-
- case BAD_DATA:
- ret = Z_DATA_ERROR;
- goto inf_leave;
-
- default: /* can't happen, but makes compilers happy */
- ret = Z_STREAM_ERROR;
- goto inf_leave;
- }
-
- /* Return unused input */
- inf_leave:
- strm->next_in = next;
- strm->avail_in = have;
- return ret;
-}
-
-int ZEXPORT inflateBackEnd(strm)
-z_streamp strm;
-{
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
- Tracev((stderr, "inflate: end\n"));
- return Z_OK;
-}
+++ /dev/null
-/* inffast.c -- fast decoding
- * Copyright (C) 1995-2004 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-#ifndef ASMINF
-
-/* Allow machine dependent optimization for post-increment or pre-increment.
- Based on testing to date,
- Pre-increment preferred for:
- - PowerPC G3 (Adler)
- - MIPS R5000 (Randers-Pehrson)
- Post-increment preferred for:
- - none
- No measurable difference:
- - Pentium III (Anderson)
- - M68060 (Nikl)
- */
-#ifdef POSTINC
-# define OFF 0
-# define PUP(a) *(a)++
-#else
-# define OFF 1
-# define PUP(a) *++(a)
-#endif
-
-/*
- Decode literal, length, and distance codes and write out the resulting
- literal and match bytes until either not enough input or output is
- available, an end-of-block is encountered, or a data error is encountered.
- When large enough input and output buffers are supplied to inflate(), for
- example, a 16K input buffer and a 64K output buffer, more than 95% of the
- inflate execution time is spent in this routine.
-
- Entry assumptions:
-
- state->mode == LEN
- strm->avail_in >= 6
- strm->avail_out >= 258
- start >= strm->avail_out
- state->bits < 8
-
- On return, state->mode is one of:
-
- LEN -- ran out of enough output space or enough available input
- TYPE -- reached end of block code, inflate() to interpret next block
- BAD_DATA -- error in block data
-
- Notes:
-
- - The maximum input bits used by a length/distance pair is 15 bits for the
- length code, 5 bits for the length extra, 15 bits for the distance code,
- and 13 bits for the distance extra. This totals 48 bits, or six bytes.
- Therefore if strm->avail_in >= 6, then there is enough input to avoid
- checking for available input while decoding.
-
- - The maximum bytes that a single length/distance pair can output is 258
- bytes, which is the maximum length that can be coded. inflate_fast()
- requires strm->avail_out >= 258 for each loop to avoid checking for
- output space.
- */
-void inflate_fast(strm, start)
-z_streamp strm;
-unsigned start; /* inflate()'s starting value for strm->avail_out */
-{
- struct inflate_state FAR *state;
- unsigned const char FAR *in; /* local strm->next_in */
- unsigned const char FAR *last; /* while in < last, enough input available */
- unsigned char FAR *out; /* local strm->next_out */
- unsigned char FAR *beg; /* inflate()'s initial strm->next_out */
- unsigned char FAR *end; /* while out < end, enough space available */
-#ifdef INFLATE_STRICT
- unsigned dmax; /* maximum distance from zlib header */
-#endif
- unsigned wsize; /* window size or zero if not using window */
- unsigned whave; /* valid bytes in the window */
- unsigned write; /* window write index */
- unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */
- unsigned long hold; /* local strm->hold */
- unsigned bits; /* local strm->bits */
- code const FAR *lcode; /* local strm->lencode */
- code const FAR *dcode; /* local strm->distcode */
- unsigned lmask; /* mask for first level of length codes */
- unsigned dmask; /* mask for first level of distance codes */
- code this; /* retrieved table entry */
- unsigned op; /* code bits, operation, extra bits, or */
- /* window position, window bytes to copy */
- unsigned len; /* match length, unused bytes */
- unsigned dist; /* match distance */
- unsigned char FAR *from; /* where to copy match from */
-
- /* copy state to local variables */
- state = (struct inflate_state FAR *)strm->state;
- in = strm->next_in - OFF;
- last = in + (strm->avail_in - 5);
- out = strm->next_out - OFF;
- beg = out - (start - strm->avail_out);
- end = out + (strm->avail_out - 257);
-#ifdef INFLATE_STRICT
- dmax = state->dmax;
-#endif
- wsize = state->wsize;
- whave = state->whave;
- write = state->write;
- window = state->window;
- hold = state->hold;
- bits = state->bits;
- lcode = state->lencode;
- dcode = state->distcode;
- lmask = (1U << state->lenbits) - 1;
- dmask = (1U << state->distbits) - 1;
-
- /* decode literals and length/distances until end-of-block or not enough
- input data or output space */
- do {
- if (bits < 15) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- this = lcode[hold & lmask];
- dolen:
- op = (unsigned)(this.bits);
- hold >>= op;
- bits -= op;
- op = (unsigned)(this.op);
- if (op == 0) { /* literal */
- Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", this.val));
- PUP(out) = (unsigned char)(this.val);
- }
- else if (op & 16) { /* length base */
- len = (unsigned)(this.val);
- op &= 15; /* number of extra bits */
- if (op) {
- if (bits < op) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- len += (unsigned)hold & ((1U << op) - 1);
- hold >>= op;
- bits -= op;
- }
- Tracevv((stderr, "inflate: length %u\n", len));
- if (bits < 15) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- this = dcode[hold & dmask];
- dodist:
- op = (unsigned)(this.bits);
- hold >>= op;
- bits -= op;
- op = (unsigned)(this.op);
- if (op & 16) { /* distance base */
- dist = (unsigned)(this.val);
- op &= 15; /* number of extra bits */
- if (bits < op) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- if (bits < op) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- }
- dist += (unsigned)hold & ((1U << op) - 1);
-#ifdef INFLATE_STRICT
- if (dist > dmax) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD_DATA;
- break;
- }
-#endif
- hold >>= op;
- bits -= op;
- Tracevv((stderr, "inflate: distance %u\n", dist));
- op = (unsigned)(out - beg); /* max distance in output */
- if (dist > op) { /* see if copy from window */
- op = dist - op; /* distance back in window */
- if (op > whave) {
- strm->msg = "invalid distance too far back";
- state->mode = BAD_DATA;
- break;
- }
- from = window - OFF;
- if (write == 0) { /* very common case */
- from += wsize - op;
- if (op < len) { /* some from window */
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = out - dist; /* rest from output */
- }
- }
- else if (write < op) { /* wrap around window */
- from += wsize + write - op;
- op -= write;
- if (op < len) { /* some from end of window */
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = window - OFF;
- if (write < len) { /* some from start of window */
- op = write;
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = out - dist; /* rest from output */
- }
- }
- }
- else { /* contiguous in window */
- from += write - op;
- if (op < len) { /* some from window */
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = out - dist; /* rest from output */
- }
- }
- while (len > 2) {
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- len -= 3;
- }
- if (len) {
- PUP(out) = PUP(from);
- if (len > 1)
- PUP(out) = PUP(from);
- }
- }
- else {
- from = out - dist; /* copy direct from output */
- do { /* minimum length is three */
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- len -= 3;
- } while (len > 2);
- if (len) {
- PUP(out) = PUP(from);
- if (len > 1)
- PUP(out) = PUP(from);
- }
- }
- }
- else if ((op & 64) == 0) { /* 2nd level distance code */
- this = dcode[this.val + (hold & ((1U << op) - 1))];
- goto dodist;
- }
- else {
- strm->msg = "invalid distance code";
- state->mode = BAD_DATA;
- break;
- }
- }
- else if ((op & 64) == 0) { /* 2nd level length code */
- this = lcode[this.val + (hold & ((1U << op) - 1))];
- goto dolen;
- }
- else if (op & 32) { /* end-of-block */
- Tracevv((stderr, "inflate: end of block\n"));
- state->mode = TYPE;
- break;
- }
- else {
- strm->msg = "invalid literal/length code";
- state->mode = BAD_DATA;
- break;
- }
- } while (in < last && out < end);
-
- /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
- len = bits >> 3;
- in -= len;
- bits -= len << 3;
- hold &= (1U << bits) - 1;
-
- /* update state and return */
- strm->next_in = in + OFF;
- strm->next_out = out + OFF;
- strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
- strm->avail_out = (unsigned)(out < end ?
- 257 + (end - out) : 257 - (out - end));
- state->hold = hold;
- state->bits = bits;
- return;
-}
-
-/*
- inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
- - Using bit fields for code structure
- - Different op definition to avoid & for extra bits (do & for table bits)
- - Three separate decoding do-loops for direct, window, and write == 0
- - Special case for distance > 1 copies to do overlapped load and store copy
- - Explicit branch predictions (based on measured branch probabilities)
- - Deferring match copy and interspersed it with decoding subsequent codes
- - Swapping literal/length else
- - Swapping window/direct else
- - Larger unrolled copy loops (three is about right)
- - Moving len -= 3 statement into middle of loop
- */
-
-#endif /* !ASMINF */
+++ /dev/null
-/* inffast.h -- header to use inffast.c
- * Copyright (C) 1995-2003 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-void inflate_fast OF((z_streamp strm, unsigned start));
+++ /dev/null
- /* inffixed.h -- table for decoding fixed codes
- * Generated automatically by makefixed().
- */
-
- /* WARNING: this file should *not* be used by applications. It
- is part of the implementation of the compression library and
- is subject to change. Applications should only use zlib.h.
- */
-
- static const code lenfix[512] = {
- {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
- {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
- {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
- {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
- {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
- {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
- {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
- {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
- {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
- {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
- {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
- {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
- {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
- {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
- {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
- {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
- {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
- {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
- {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
- {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
- {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
- {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
- {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
- {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
- {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
- {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
- {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
- {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
- {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
- {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
- {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
- {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
- {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
- {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
- {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
- {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
- {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
- {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
- {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
- {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
- {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
- {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
- {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
- {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
- {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
- {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
- {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
- {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
- {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
- {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
- {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
- {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
- {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
- {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
- {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
- {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
- {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
- {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
- {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
- {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
- {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
- {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
- {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
- {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
- {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
- {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
- {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
- {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
- {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
- {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
- {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
- {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
- {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
- {0,9,255}
- };
-
- static const code distfix[32] = {
- {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
- {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
- {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
- {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
- {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
- {22,5,193},{64,5,0}
- };
+++ /dev/null
-/* inflate.c -- zlib decompression
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * Change history:
- *
- * 1.2.beta0 24 Nov 2002
- * - First version -- complete rewrite of inflate to simplify code, avoid
- * creation of window when not needed, minimize use of window when it is
- * needed, make inffast.c even faster, implement gzip decoding, and to
- * improve code readability and style over the previous zlib inflate code
- *
- * 1.2.beta1 25 Nov 2002
- * - Use pointers for available input and output checking in inffast.c
- * - Remove input and output counters in inffast.c
- * - Change inffast.c entry and loop from avail_in >= 7 to >= 6
- * - Remove unnecessary second byte pull from length extra in inffast.c
- * - Unroll direct copy to three copies per loop in inffast.c
- *
- * 1.2.beta2 4 Dec 2002
- * - Change external routine names to reduce potential conflicts
- * - Correct filename to inffixed.h for fixed tables in inflate.c
- * - Make hbuf[] unsigned char to match parameter type in inflate.c
- * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)
- * to avoid negation problem on Alphas (64 bit) in inflate.c
- *
- * 1.2.beta3 22 Dec 2002
- * - Add comments on state->bits assertion in inffast.c
- * - Add comments on op field in inftrees.h
- * - Fix bug in reuse of allocated window after inflateReset()
- * - Remove bit fields--back to byte structure for speed
- * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths
- * - Change post-increments to pre-increments in inflate_fast(), PPC biased?
- * - Add compile time option, POSTINC, to use post-increments instead (Intel?)
- * - Make MATCH copy in inflate() much faster for when inflate_fast() not used
- * - Use local copies of stream next and avail values, as well as local bit
- * buffer and bit count in inflate()--for speed when inflate_fast() not used
- *
- * 1.2.beta4 1 Jan 2003
- * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings
- * - Move a comment on output buffer sizes from inffast.c to inflate.c
- * - Add comments in inffast.c to introduce the inflate_fast() routine
- * - Rearrange window copies in inflate_fast() for speed and simplification
- * - Unroll last copy for window match in inflate_fast()
- * - Use local copies of window variables in inflate_fast() for speed
- * - Pull out common write == 0 case for speed in inflate_fast()
- * - Make op and len in inflate_fast() unsigned for consistency
- * - Add FAR to lcode and dcode declarations in inflate_fast()
- * - Simplified bad distance check in inflate_fast()
- * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new
- * source file infback.c to provide a call-back interface to inflate for
- * programs like gzip and unzip -- uses window as output buffer to avoid
- * window copying
- *
- * 1.2.beta5 1 Jan 2003
- * - Improved inflateBack() interface to allow the caller to provide initial
- * input in strm.
- * - Fixed stored blocks bug in inflateBack()
- *
- * 1.2.beta6 4 Jan 2003
- * - Added comments in inffast.c on effectiveness of POSTINC
- * - Typecasting all around to reduce compiler warnings
- * - Changed loops from while (1) or do {} while (1) to for (;;), again to
- * make compilers happy
- * - Changed type of window in inflateBackInit() to unsigned char *
- *
- * 1.2.beta7 27 Jan 2003
- * - Changed many types to unsigned or unsigned short to avoid warnings
- * - Added inflateCopy() function
- *
- * 1.2.0 9 Mar 2003
- * - Changed inflateBack() interface to provide separate opaque descriptors
- * for the in() and out() functions
- * - Changed inflateBack() argument and in_func typedef to swap the length
- * and buffer address return values for the input function
- * - Check next_in and next_out for Z_NULL on entry to inflate()
- *
- * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-#ifdef MAKEFIXED
-# ifndef BUILDFIXED
-# define BUILDFIXED
-# endif
-#endif
-
-/* function prototypes */
-local void fixedtables OF((struct inflate_state FAR *state));
-local int updatewindow OF((z_streamp strm, unsigned out));
-#ifdef BUILDFIXED
- void makefixed OF((void));
-#endif
-local unsigned syncsearch OF((unsigned FAR *have, unsigned const char FAR *buf,
- unsigned len));
-
-int ZEXPORT inflateReset(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- strm->total_in = strm->total_out = state->total = 0;
- strm->msg = Z_NULL;
- strm->adler = 1; /* to support ill-conceived Java test suite */
- state->mode = HEAD;
- state->last = 0;
- state->havedict = 0;
- state->dmax = 32768U;
- state->head = Z_NULL;
- state->wsize = 0;
- state->whave = 0;
- state->write = 0;
- state->hold = 0;
- state->bits = 0;
- state->lencode = state->distcode = state->next = state->codes;
- Tracev((stderr, "inflate: reset\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflatePrime(strm, bits, value)
-z_streamp strm;
-int bits;
-int value;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;
- value &= (1L << bits) - 1;
- state->hold += value << state->bits;
- state->bits += bits;
- return Z_OK;
-}
-
-int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
-z_streamp strm;
-int windowBits;
-const char *version;
-int stream_size;
-{
- struct inflate_state FAR *state;
-
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
- stream_size != (int)(sizeof(z_stream)))
- return Z_VERSION_ERROR;
- if (strm == Z_NULL) return Z_STREAM_ERROR;
- strm->msg = Z_NULL; /* in case we return an error */
- if (strm->zalloc == (alloc_func)0) {
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
- }
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;
- state = (struct inflate_state FAR *)
- ZALLOC(strm, 1, sizeof(struct inflate_state));
- if (state == Z_NULL) return Z_MEM_ERROR;
- Tracev((stderr, "inflate: allocated\n"));
- strm->state = (struct internal_state FAR *)state;
- if (windowBits < 0) {
- state->wrap = 0;
- windowBits = -windowBits;
- }
- else {
- state->wrap = (windowBits >> 4) + 1;
-#ifdef GUNZIP
- if (windowBits < 48) windowBits &= 15;
-#endif
- }
- if (windowBits < 8 || windowBits > 15) {
- ZFREE(strm, state);
- strm->state = Z_NULL;
- return Z_STREAM_ERROR;
- }
- state->wbits = (unsigned)windowBits;
- state->window = Z_NULL;
- return inflateReset(strm);
-}
-
-int ZEXPORT inflateInit_(strm, version, stream_size)
-z_streamp strm;
-const char *version;
-int stream_size;
-{
- return inflateInit2_(strm, DEF_WBITS, version, stream_size);
-}
-
-/*
- Return state with length and distance decoding tables and index sizes set to
- fixed code decoding. Normally this returns fixed tables from inffixed.h.
- If BUILDFIXED is defined, then instead this routine builds the tables the
- first time it's called, and returns those tables the first time and
- thereafter. This reduces the size of the code by about 2K bytes, in
- exchange for a little execution time. However, BUILDFIXED should not be
- used for threaded applications, since the rewriting of the tables and virgin
- may not be thread-safe.
- */
-local void fixedtables(state)
-struct inflate_state FAR *state;
-{
-#ifdef BUILDFIXED
- static int virgin = 1;
- static code *lenfix, *distfix;
- static code fixed[544];
-
- /* build fixed huffman tables if first call (may not be thread safe) */
- if (virgin) {
- unsigned sym, bits;
- static code *next;
-
- /* literal/length table */
- sym = 0;
- while (sym < 144) state->lens[sym++] = 8;
- while (sym < 256) state->lens[sym++] = 9;
- while (sym < 280) state->lens[sym++] = 7;
- while (sym < 288) state->lens[sym++] = 8;
- next = fixed;
- lenfix = next;
- bits = 9;
- inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
-
- /* distance table */
- sym = 0;
- while (sym < 32) state->lens[sym++] = 5;
- distfix = next;
- bits = 5;
- inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
-
- /* do this just once */
- virgin = 0;
- }
-#else /* !BUILDFIXED */
-# include "inffixed.h"
-#endif /* BUILDFIXED */
- state->lencode = lenfix;
- state->lenbits = 9;
- state->distcode = distfix;
- state->distbits = 5;
-}
-
-#ifdef MAKEFIXED
-#include <stdio.h>
-
-/*
- Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also
- defines BUILDFIXED, so the tables are built on the fly. makefixed() writes
- those tables to stdout, which would be piped to inffixed.h. A small program
- can simply call makefixed to do this:
-
- void makefixed(void);
-
- int main(void)
- {
- makefixed();
- return 0;
- }
-
- Then that can be linked with zlib built with MAKEFIXED defined and run:
-
- a.out > inffixed.h
- */
-void makefixed()
-{
- unsigned low, size;
- struct inflate_state state;
-
- fixedtables(&state);
- puts(" /* inffixed.h -- table for decoding fixed codes");
- puts(" * Generated automatically by makefixed().");
- puts(" */");
- puts("");
- puts(" /* WARNING: this file should *not* be used by applications.");
- puts(" It is part of the implementation of this library and is");
- puts(" subject to change. Applications should only use zlib.h.");
- puts(" */");
- puts("");
- size = 1U << 9;
- printf(" static const code lenfix[%u] = {", size);
- low = 0;
- for (;;) {
- if ((low % 7) == 0) printf("\n ");
- printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,
- state.lencode[low].val);
- if (++low == size) break;
- putchar(',');
- }
- puts("\n };");
- size = 1U << 5;
- printf("\n static const code distfix[%u] = {", size);
- low = 0;
- for (;;) {
- if ((low % 6) == 0) printf("\n ");
- printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,
- state.distcode[low].val);
- if (++low == size) break;
- putchar(',');
- }
- puts("\n };");
-}
-#endif /* MAKEFIXED */
-
-/*
- Update the window with the last wsize (normally 32K) bytes written before
- returning. If window does not exist yet, create it. This is only called
- when a window is already in use, or when output has been written during this
- inflate call, but the end of the deflate stream has not been reached yet.
- It is also called to create a window for dictionary data when a dictionary
- is loaded.
-
- Providing output buffers larger than 32K to inflate() should provide a speed
- advantage, since only the last 32K of output is copied to the sliding window
- upon return from inflate(), and since all distances after the first 32K of
- output will fall in the output data, making match copies simpler and faster.
- The advantage may be dependent on the size of the processor's data caches.
- */
-local int updatewindow(strm, out)
-z_streamp strm;
-unsigned out;
-{
- struct inflate_state FAR *state;
- unsigned copy, dist;
-
- state = (struct inflate_state FAR *)strm->state;
-
- /* if it hasn't been done already, allocate space for the window */
- if (state->window == Z_NULL) {
- state->window = (unsigned char FAR *)
- ZALLOC(strm, 1U << state->wbits,
- sizeof(unsigned char));
- if (state->window == Z_NULL) return 1;
- }
-
- /* if window not in use yet, initialize */
- if (state->wsize == 0) {
- state->wsize = 1U << state->wbits;
- state->write = 0;
- state->whave = 0;
- }
-
- /* copy state->wsize or less output bytes into the circular window */
- copy = out - strm->avail_out;
- if (copy >= state->wsize) {
- zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
- state->write = 0;
- state->whave = state->wsize;
- }
- else {
- dist = state->wsize - state->write;
- if (dist > copy) dist = copy;
- zmemcpy(state->window + state->write, strm->next_out - copy, dist);
- copy -= dist;
- if (copy) {
- zmemcpy(state->window, strm->next_out - copy, copy);
- state->write = copy;
- state->whave = state->wsize;
- }
- else {
- state->write += dist;
- if (state->write == state->wsize) state->write = 0;
- if (state->whave < state->wsize) state->whave += dist;
- }
- }
- return 0;
-}
-
-/* Macros for inflate(): */
-
-/* check function to use adler32() for zlib or crc32() for gzip */
-#ifdef GUNZIP
-# define UPDATE(check, buf, len) \
- (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
-#else
-# define UPDATE(check, buf, len) adler32(check, buf, len)
-#endif
-
-/* check macros for header crc */
-#ifdef GUNZIP
-# define CRC2(check, word) \
- do { \
- hbuf[0] = (unsigned char)(word); \
- hbuf[1] = (unsigned char)((word) >> 8); \
- check = crc32(check, hbuf, 2); \
- } while (0)
-
-# define CRC4(check, word) \
- do { \
- hbuf[0] = (unsigned char)(word); \
- hbuf[1] = (unsigned char)((word) >> 8); \
- hbuf[2] = (unsigned char)((word) >> 16); \
- hbuf[3] = (unsigned char)((word) >> 24); \
- check = crc32(check, hbuf, 4); \
- } while (0)
-#endif
-
-/* Load registers with state in inflate() for speed */
-#define LOAD() \
- do { \
- put = strm->next_out; \
- left = strm->avail_out; \
- next = strm->next_in; \
- have = strm->avail_in; \
- hold = state->hold; \
- bits = state->bits; \
- } while (0)
-
-/* Restore state from registers in inflate() */
-#define RESTORE() \
- do { \
- strm->next_out = put; \
- strm->avail_out = left; \
- strm->next_in = next; \
- strm->avail_in = have; \
- state->hold = hold; \
- state->bits = bits; \
- } while (0)
-
-/* Clear the input bit accumulator */
-#define INITBITS() \
- do { \
- hold = 0; \
- bits = 0; \
- } while (0)
-
-/* Get a byte of input into the bit accumulator, or return from inflate()
- if there is no input available. */
-#define PULLBYTE() \
- do { \
- if (have == 0) goto inf_leave; \
- have--; \
- hold += (unsigned long)(*next++) << bits; \
- bits += 8; \
- } while (0)
-
-/* Assure that there are at least n bits in the bit accumulator. If there is
- not enough available input to do that, then return from inflate(). */
-#define NEEDBITS(n) \
- do { \
- while (bits < (unsigned)(n)) \
- PULLBYTE(); \
- } while (0)
-
-/* Return the low n bits of the bit accumulator (n < 16) */
-#define BITS(n) \
- ((unsigned)hold & ((1U << (n)) - 1))
-
-/* Remove n bits from the bit accumulator */
-#define DROPBITS(n) \
- do { \
- hold >>= (n); \
- bits -= (unsigned)(n); \
- } while (0)
-
-/* Remove zero to seven bits as needed to go to a byte boundary */
-#define BYTEBITS() \
- do { \
- hold >>= bits & 7; \
- bits -= bits & 7; \
- } while (0)
-
-/* Reverse the bytes in a 32-bit value */
-#define REVERSE(q) \
- ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
- (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
-
-/*
- inflate() uses a state machine to process as much input data and generate as
- much output data as possible before returning. The state machine is
- structured roughly as follows:
-
- for (;;) switch (state) {
- ...
- case STATEn:
- if (not enough input data or output space to make progress)
- return;
- ... make progress ...
- state = STATEm;
- break;
- ...
- }
-
- so when inflate() is called again, the same case is attempted again, and
- if the appropriate resources are provided, the machine proceeds to the
- next state. The NEEDBITS() macro is usually the way the state evaluates
- whether it can proceed or should return. NEEDBITS() does the return if
- the requested bits are not available. The typical use of the BITS macros
- is:
-
- NEEDBITS(n);
- ... do something with BITS(n) ...
- DROPBITS(n);
-
- where NEEDBITS(n) either returns from inflate() if there isn't enough
- input left to load n bits into the accumulator, or it continues. BITS(n)
- gives the low n bits in the accumulator. When done, DROPBITS(n) drops
- the low n bits off the accumulator. INITBITS() clears the accumulator
- and sets the number of available bits to zero. BYTEBITS() discards just
- enough bits to put the accumulator on a byte boundary. After BYTEBITS()
- and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.
-
- NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
- if there is no input available. The decoding of variable length codes uses
- PULLBYTE() directly in order to pull just enough bytes to decode the next
- code, and no more.
-
- Some states loop until they get enough input, making sure that enough
- state information is maintained to continue the loop where it left off
- if NEEDBITS() returns in the loop. For example, want, need, and keep
- would all have to actually be part of the saved state in case NEEDBITS()
- returns:
-
- case STATEw:
- while (want < need) {
- NEEDBITS(n);
- keep[want++] = BITS(n);
- DROPBITS(n);
- }
- state = STATEx;
- case STATEx:
-
- As shown above, if the next state is also the next case, then the break
- is omitted.
-
- A state may also return if there is not enough output space available to
- complete that state. Those states are copying stored data, writing a
- literal byte, and copying a matching string.
-
- When returning, a "goto inf_leave" is used to update the total counters,
- update the check value, and determine whether any progress has been made
- during that inflate() call in order to return the proper return code.
- Progress is defined as a change in either strm->avail_in or strm->avail_out.
- When there is a window, goto inf_leave will update the window with the last
- output written. If a goto inf_leave occurs in the middle of decompression
- and there is no window currently, goto inf_leave will create one and copy
- output to the window for the next call of inflate().
-
- In this implementation, the flush parameter of inflate() only affects the
- return code (per zlib.h). inflate() always writes as much as possible to
- strm->next_out, given the space available and the provided input--the effect
- documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers
- the allocation of and copying into a sliding window until necessary, which
- provides the effect documented in zlib.h for Z_FINISH when the entire input
- stream available. So the only thing the flush parameter actually does is:
- when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it
- will return Z_BUF_ERROR if it has not reached the end of the stream.
- */
-
-int ZEXPORT inflate(strm, flush)
-z_streamp strm;
-int flush;
-{
- struct inflate_state FAR *state;
- unsigned const char FAR *next; /* next input */
- unsigned char FAR *put; /* next output */
- unsigned have, left; /* available input and output */
- unsigned long hold; /* bit buffer */
- unsigned bits; /* bits in bit buffer */
- unsigned in, out; /* save starting available input and output */
- unsigned copy; /* number of stored or match bytes to copy */
- unsigned char FAR *from; /* where to copy match bytes from */
- code this; /* current decoding table entry */
- code last; /* parent table entry */
- unsigned len; /* length to copy for repeats, bits to drop */
- int ret; /* return code */
-#ifdef GUNZIP
- unsigned char hbuf[4]; /* buffer for gzip header crc calculation */
-#endif
- static const unsigned short order[19] = /* permutation of code lengths */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
- if (strm == Z_NULL || strm->state == Z_NULL || strm->next_out == Z_NULL ||
- (strm->next_in == Z_NULL && strm->avail_in != 0))
- return Z_STREAM_ERROR;
-
- state = (struct inflate_state FAR *)strm->state;
- if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */
- LOAD();
- in = have;
- out = left;
- ret = Z_OK;
- for (;;)
- switch (state->mode) {
- case HEAD:
- if (state->wrap == 0) {
- state->mode = TYPEDO;
- break;
- }
- NEEDBITS(16);
-#ifdef GUNZIP
- if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */
- state->check = crc32(0L, Z_NULL, 0);
- CRC2(state->check, hold);
- INITBITS();
- state->mode = FLAGS;
- break;
- }
- state->flags = 0; /* expect zlib header */
- if (state->head != Z_NULL)
- state->head->done = -1;
- if (!(state->wrap & 1) || /* check if zlib header allowed */
-#else
- if (
-#endif
- ((BITS(8) << 8) + (hold >> 8)) % 31) {
- strm->msg = "incorrect header check";
- state->mode = BAD_DATA;
- break;
- }
- if (BITS(4) != Z_DEFLATED) {
- strm->msg = "unknown compression method";
- state->mode = BAD_DATA;
- break;
- }
- DROPBITS(4);
- len = BITS(4) + 8;
- if (len > state->wbits) {
- strm->msg = "invalid window size";
- state->mode = BAD_DATA;
- break;
- }
- state->dmax = 1U << len;
- Tracev((stderr, "inflate: zlib header ok\n"));
- strm->adler = state->check = adler32(0L, Z_NULL, 0);
- state->mode = hold & 0x200 ? DICTID : TYPE;
- INITBITS();
- break;
-#ifdef GUNZIP
- case FLAGS:
- NEEDBITS(16);
- state->flags = (int)(hold);
- if ((state->flags & 0xff) != Z_DEFLATED) {
- strm->msg = "unknown compression method";
- state->mode = BAD_DATA;
- break;
- }
- if (state->flags & 0xe000) {
- strm->msg = "unknown header flags set";
- state->mode = BAD_DATA;
- break;
- }
- if (state->head != Z_NULL)
- state->head->text = (int)((hold >> 8) & 1);
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- state->mode = TIME;
- case TIME:
- NEEDBITS(32);
- if (state->head != Z_NULL)
- state->head->time = hold;
- if (state->flags & 0x0200) CRC4(state->check, hold);
- INITBITS();
- state->mode = OS;
- case OS:
- NEEDBITS(16);
- if (state->head != Z_NULL) {
- state->head->xflags = (int)(hold & 0xff);
- state->head->os = (int)(hold >> 8);
- }
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- state->mode = EXLEN;
- case EXLEN:
- if (state->flags & 0x0400) {
- NEEDBITS(16);
- state->length = (unsigned)(hold);
- if (state->head != Z_NULL)
- state->head->extra_len = (unsigned)hold;
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- }
- else if (state->head != Z_NULL)
- state->head->extra = Z_NULL;
- state->mode = EXTRA;
- case EXTRA:
- if (state->flags & 0x0400) {
- copy = state->length;
- if (copy > have) copy = have;
- if (copy) {
- if (state->head != Z_NULL &&
- state->head->extra != Z_NULL) {
- len = state->head->extra_len - state->length;
- zmemcpy(state->head->extra + len, next,
- len + copy > state->head->extra_max ?
- state->head->extra_max - len : copy);
- }
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- state->length -= copy;
- }
- if (state->length) goto inf_leave;
- }
- state->length = 0;
- state->mode = NAME;
- case NAME:
- if (state->flags & 0x0800) {
- if (have == 0) goto inf_leave;
- copy = 0;
- do {
- len = (unsigned)(next[copy++]);
- if (state->head != Z_NULL &&
- state->head->name != Z_NULL &&
- state->length < state->head->name_max)
- state->head->name[state->length++] = len;
- } while (len && copy < have);
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- if (len) goto inf_leave;
- }
- else if (state->head != Z_NULL)
- state->head->name = Z_NULL;
- state->length = 0;
- state->mode = COMMENT;
- case COMMENT:
- if (state->flags & 0x1000) {
- if (have == 0) goto inf_leave;
- copy = 0;
- do {
- len = (unsigned)(next[copy++]);
- if (state->head != Z_NULL &&
- state->head->comment != Z_NULL &&
- state->length < state->head->comm_max)
- state->head->comment[state->length++] = len;
- } while (len && copy < have);
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- if (len) goto inf_leave;
- }
- else if (state->head != Z_NULL)
- state->head->comment = Z_NULL;
- state->mode = HCRC;
- case HCRC:
- if (state->flags & 0x0200) {
- NEEDBITS(16);
- if (hold != (state->check & 0xffff)) {
- strm->msg = "header crc mismatch";
- state->mode = BAD_DATA;
- break;
- }
- INITBITS();
- }
- if (state->head != Z_NULL) {
- state->head->hcrc = (int)((state->flags >> 9) & 1);
- state->head->done = 1;
- }
- strm->adler = state->check = crc32(0L, Z_NULL, 0);
- state->mode = TYPE;
- break;
-#endif
- case DICTID:
- NEEDBITS(32);
- strm->adler = state->check = REVERSE(hold);
- INITBITS();
- state->mode = DICT;
- case DICT:
- if (state->havedict == 0) {
- RESTORE();
- return Z_NEED_DICT;
- }
- strm->adler = state->check = adler32(0L, Z_NULL, 0);
- state->mode = TYPE;
- case TYPE:
- if (flush == Z_BLOCK) goto inf_leave;
- case TYPEDO:
- if (state->last) {
- BYTEBITS();
- state->mode = CHECK;
- break;
- }
- NEEDBITS(3);
- state->last = BITS(1);
- DROPBITS(1);
- switch (BITS(2)) {
- case 0: /* stored block */
- Tracev((stderr, "inflate: stored block%s\n",
- state->last ? " (last)" : ""));
- state->mode = STORED;
- break;
- case 1: /* fixed block */
- fixedtables(state);
- Tracev((stderr, "inflate: fixed codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = LEN; /* decode codes */
- break;
- case 2: /* dynamic block */
- Tracev((stderr, "inflate: dynamic codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = TABLE;
- break;
- case 3:
- strm->msg = "invalid block type";
- state->mode = BAD_DATA;
- }
- DROPBITS(2);
- break;
- case STORED:
- BYTEBITS(); /* go to byte boundary */
- NEEDBITS(32);
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
- strm->msg = "invalid stored block lengths";
- state->mode = BAD_DATA;
- break;
- }
- state->length = (unsigned)hold & 0xffff;
- Tracev((stderr, "inflate: stored length %u\n",
- state->length));
- INITBITS();
- state->mode = COPY;
- case COPY:
- copy = state->length;
- if (copy) {
- if (copy > have) copy = have;
- if (copy > left) copy = left;
- if (copy == 0) goto inf_leave;
- zmemcpy(put, next, copy);
- have -= copy;
- next += copy;
- left -= copy;
- put += copy;
- state->length -= copy;
- break;
- }
- Tracev((stderr, "inflate: stored end\n"));
- state->mode = TYPE;
- break;
- case TABLE:
- NEEDBITS(14);
- state->nlen = BITS(5) + 257;
- DROPBITS(5);
- state->ndist = BITS(5) + 1;
- DROPBITS(5);
- state->ncode = BITS(4) + 4;
- DROPBITS(4);
-#ifndef PKZIP_BUG_WORKAROUND
- if (state->nlen > 286 || state->ndist > 30) {
- strm->msg = "too many length or distance symbols";
- state->mode = BAD_DATA;
- break;
- }
-#endif
- Tracev((stderr, "inflate: table sizes ok\n"));
- state->have = 0;
- state->mode = LENLENS;
- case LENLENS:
- while (state->have < state->ncode) {
- NEEDBITS(3);
- state->lens[order[state->have++]] = (unsigned short)BITS(3);
- DROPBITS(3);
- }
- while (state->have < 19)
- state->lens[order[state->have++]] = 0;
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 7;
- ret = inflate_table(CODES, state->lens, 19, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = "invalid code lengths set";
- state->mode = BAD_DATA;
- break;
- }
- Tracev((stderr, "inflate: code lengths ok\n"));
- state->have = 0;
- state->mode = CODELENS;
- case CODELENS:
- while (state->have < state->nlen + state->ndist) {
- for (;;) {
- this = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.val < 16) {
- NEEDBITS(this.bits);
- DROPBITS(this.bits);
- state->lens[state->have++] = this.val;
- }
- else {
- if (this.val == 16) {
- NEEDBITS(this.bits + 2);
- DROPBITS(this.bits);
- if (state->have == 0) {
- strm->msg = "invalid bit length repeat";
- state->mode = BAD_DATA;
- break;
- }
- len = state->lens[state->have - 1];
- copy = 3 + BITS(2);
- DROPBITS(2);
- }
- else if (this.val == 17) {
- NEEDBITS(this.bits + 3);
- DROPBITS(this.bits);
- len = 0;
- copy = 3 + BITS(3);
- DROPBITS(3);
- }
- else {
- NEEDBITS(this.bits + 7);
- DROPBITS(this.bits);
- len = 0;
- copy = 11 + BITS(7);
- DROPBITS(7);
- }
- if (state->have + copy > state->nlen + state->ndist) {
- strm->msg = "invalid bit length repeat";
- state->mode = BAD_DATA;
- break;
- }
- while (copy--)
- state->lens[state->have++] = (unsigned short)len;
- }
- }
-
- /* handle error breaks in while */
- if (state->mode == BAD_DATA) break;
-
- /* build code tables */
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 9;
- ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = "invalid literal/lengths set";
- state->mode = BAD_DATA;
- break;
- }
- state->distcode = (code const FAR *)(state->next);
- state->distbits = 6;
- ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
- &(state->next), &(state->distbits), state->work);
- if (ret) {
- strm->msg = "invalid distances set";
- state->mode = BAD_DATA;
- break;
- }
- Tracev((stderr, "inflate: codes ok\n"));
- state->mode = LEN;
- case LEN:
- if (have >= 6 && left >= 258) {
- RESTORE();
- inflate_fast(strm, out);
- LOAD();
- break;
- }
- for (;;) {
- this = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if (this.op && (this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = state->lencode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- state->length = (unsigned)this.val;
- if ((int)(this.op) == 0) {
- Tracevv((stderr, this.val >= 0x20 && this.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", this.val));
- state->mode = LIT;
- break;
- }
- if (this.op & 32) {
- Tracevv((stderr, "inflate: end of block\n"));
- state->mode = TYPE;
- break;
- }
- if (this.op & 64) {
- strm->msg = "invalid literal/length code";
- state->mode = BAD_DATA;
- break;
- }
- state->extra = (unsigned)(this.op) & 15;
- state->mode = LENEXT;
- case LENEXT:
- if (state->extra) {
- NEEDBITS(state->extra);
- state->length += BITS(state->extra);
- DROPBITS(state->extra);
- }
- Tracevv((stderr, "inflate: length %u\n", state->length));
- state->mode = DIST;
- case DIST:
- for (;;) {
- this = state->distcode[BITS(state->distbits)];
- if ((unsigned)(this.bits) <= bits) break;
- PULLBYTE();
- }
- if ((this.op & 0xf0) == 0) {
- last = this;
- for (;;) {
- this = state->distcode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + this.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(this.bits);
- if (this.op & 64) {
- strm->msg = "invalid distance code";
- state->mode = BAD_DATA;
- break;
- }
- state->offset = (unsigned)this.val;
- state->extra = (unsigned)(this.op) & 15;
- state->mode = DISTEXT;
- case DISTEXT:
- if (state->extra) {
- NEEDBITS(state->extra);
- state->offset += BITS(state->extra);
- DROPBITS(state->extra);
- }
-#ifdef INFLATE_STRICT
- if (state->offset > state->dmax) {
- strm->msg = "invalid distance too far back";
- state->mode = BAD_DATA;
- break;
- }
-#endif
- if (state->offset > state->whave + out - left) {
- strm->msg = "invalid distance too far back";
- state->mode = BAD_DATA;
- break;
- }
- Tracevv((stderr, "inflate: distance %u\n", state->offset));
- state->mode = MATCH;
- case MATCH:
- if (left == 0) goto inf_leave;
- copy = out - left;
- if (state->offset > copy) { /* copy from window */
- copy = state->offset - copy;
- if (copy > state->write) {
- copy -= state->write;
- from = state->window + (state->wsize - copy);
- }
- else
- from = state->window + (state->write - copy);
- if (copy > state->length) copy = state->length;
- }
- else { /* copy from output */
- from = put - state->offset;
- copy = state->length;
- }
- if (copy > left) copy = left;
- left -= copy;
- state->length -= copy;
- do {
- *put++ = *from++;
- } while (--copy);
- if (state->length == 0) state->mode = LEN;
- break;
- case LIT:
- if (left == 0) goto inf_leave;
- *put++ = (unsigned char)(state->length);
- left--;
- state->mode = LEN;
- break;
- case CHECK:
- if (state->wrap) {
- NEEDBITS(32);
- out -= left;
- strm->total_out += out;
- state->total += out;
- if (out)
- strm->adler = state->check =
- UPDATE(state->check, put - out, out);
- out = left;
- if ((
-#ifdef GUNZIP
- state->flags ? hold :
-#endif
- REVERSE(hold)) != state->check) {
- strm->msg = "incorrect data check";
- state->mode = BAD_DATA;
- break;
- }
- INITBITS();
- Tracev((stderr, "inflate: check matches trailer\n"));
- }
-#ifdef GUNZIP
- state->mode = LENGTH;
- case LENGTH:
- if (state->wrap && state->flags) {
- NEEDBITS(32);
- if (hold != (state->total & 0xffffffffUL)) {
- strm->msg = "incorrect length check";
- state->mode = BAD_DATA;
- break;
- }
- INITBITS();
- Tracev((stderr, "inflate: length matches trailer\n"));
- }
-#endif
- state->mode = DONE;
- case DONE:
- ret = Z_STREAM_END;
- goto inf_leave;
- case BAD_DATA:
- ret = Z_DATA_ERROR;
- goto inf_leave;
- case MEM:
- return Z_MEM_ERROR;
- case SYNC:
- default:
- return Z_STREAM_ERROR;
- }
-
- /*
- Return from inflate(), updating the total counts and the check value.
- If there was no progress during the inflate() call, return a buffer
- error. Call updatewindow() to create and/or update the window state.
- Note: a memory error from inflate() is non-recoverable.
- */
- inf_leave:
- RESTORE();
- if (state->wsize || (state->mode < CHECK && out != strm->avail_out))
- if (updatewindow(strm, out)) {
- state->mode = MEM;
- return Z_MEM_ERROR;
- }
- in -= strm->avail_in;
- out -= strm->avail_out;
- strm->total_in += in;
- strm->total_out += out;
- state->total += out;
- if (state->wrap && out)
- strm->adler = state->check =
- UPDATE(state->check, strm->next_out - out, out);
- strm->data_type = state->bits + (state->last ? 64 : 0) +
- (state->mode == TYPE ? 128 : 0);
- if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
- ret = Z_BUF_ERROR;
- return ret;
-}
-
-int ZEXPORT inflateEnd(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (state->window != Z_NULL) ZFREE(strm, state->window);
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
- Tracev((stderr, "inflate: end\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
-z_streamp strm;
-const Bytef *dictionary;
-uInt dictLength;
-{
- struct inflate_state FAR *state;
- unsigned long id;
-
- /* check state */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (state->wrap != 0 && state->mode != DICT)
- return Z_STREAM_ERROR;
-
- /* check for correct dictionary id */
- if (state->mode == DICT) {
- id = adler32(0L, Z_NULL, 0);
- id = adler32(id, dictionary, dictLength);
- if (id != state->check)
- return Z_DATA_ERROR;
- }
-
- /* copy dictionary to window */
- if (updatewindow(strm, strm->avail_out)) {
- state->mode = MEM;
- return Z_MEM_ERROR;
- }
- if (dictLength > state->wsize) {
- zmemcpy(state->window, dictionary + dictLength - state->wsize,
- state->wsize);
- state->whave = state->wsize;
- }
- else {
- zmemcpy(state->window + state->wsize - dictLength, dictionary,
- dictLength);
- state->whave = dictLength;
- }
- state->havedict = 1;
- Tracev((stderr, "inflate: dictionary set\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflateGetHeader(strm, head)
-z_streamp strm;
-gz_headerp head;
-{
- struct inflate_state FAR *state;
-
- /* check state */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;
-
- /* save header structure */
- state->head = head;
- head->done = 0;
- return Z_OK;
-}
-
-/*
- Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found
- or when out of input. When called, *have is the number of pattern bytes
- found in order so far, in 0..3. On return *have is updated to the new
- state. If on return *have equals four, then the pattern was found and the
- return value is how many bytes were read including the last byte of the
- pattern. If *have is less than four, then the pattern has not been found
- yet and the return value is len. In the latter case, syncsearch() can be
- called again with more data and the *have state. *have is initialized to
- zero for the first call.
- */
-local unsigned syncsearch(have, buf, len)
-unsigned FAR *have;
-unsigned const char FAR *buf;
-unsigned len;
-{
- unsigned got;
- unsigned next;
-
- got = *have;
- next = 0;
- while (next < len && got < 4) {
- if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
- got++;
- else if (buf[next])
- got = 0;
- else
- got = 4 - got;
- next++;
- }
- *have = got;
- return next;
-}
-
-int ZEXPORT inflateSync(strm)
-z_streamp strm;
-{
- unsigned len; /* number of bytes to look at or looked at */
- unsigned long in, out; /* temporary to save total_in and total_out */
- unsigned char buf[4]; /* to restore bit buffer to byte string */
- struct inflate_state FAR *state;
-
- /* check parameters */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;
-
- /* if first time, start search in bit buffer */
- if (state->mode != SYNC) {
- state->mode = SYNC;
- state->hold <<= state->bits & 7;
- state->bits -= state->bits & 7;
- len = 0;
- while (state->bits >= 8) {
- buf[len++] = (unsigned char)(state->hold);
- state->hold >>= 8;
- state->bits -= 8;
- }
- state->have = 0;
- syncsearch(&(state->have), buf, len);
- }
-
- /* search available input */
- len = syncsearch(&(state->have), strm->next_in, strm->avail_in);
- strm->avail_in -= len;
- strm->next_in += len;
- strm->total_in += len;
-
- /* return no joy or set up to restart inflate() on a new block */
- if (state->have != 4) return Z_DATA_ERROR;
- in = strm->total_in; out = strm->total_out;
- inflateReset(strm);
- strm->total_in = in; strm->total_out = out;
- state->mode = TYPE;
- return Z_OK;
-}
-
-/*
- Returns true if inflate is currently at the end of a block generated by
- Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
- implementation to provide an additional safety check. PPP uses
- Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored
- block. When decompressing, PPP checks that at the end of input packet,
- inflate is waiting for these length bytes.
- */
-int ZEXPORT inflateSyncPoint(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- return state->mode == STORED && state->bits == 0;
-}
-
-int ZEXPORT inflateCopy(dest, source)
-z_streamp dest;
-z_streamp source;
-{
- struct inflate_state FAR *state;
- struct inflate_state FAR *copy;
- unsigned char FAR *window;
- unsigned wsize;
-
- /* check input */
- if (dest == Z_NULL || source == Z_NULL || source->state == Z_NULL ||
- source->zalloc == (alloc_func)0 || source->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)source->state;
-
- /* allocate space */
- copy = (struct inflate_state FAR *)
- ZALLOC(source, 1, sizeof(struct inflate_state));
- if (copy == Z_NULL) return Z_MEM_ERROR;
- window = Z_NULL;
- if (state->window != Z_NULL) {
- window = (unsigned char FAR *)
- ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));
- if (window == Z_NULL) {
- ZFREE(source, copy);
- return Z_MEM_ERROR;
- }
- }
-
- /* copy state */
- zmemcpy(dest, source, sizeof(z_stream));
- zmemcpy(copy, state, sizeof(struct inflate_state));
- if (state->lencode >= state->codes &&
- state->lencode <= state->codes + ENOUGH - 1) {
- copy->lencode = copy->codes + (state->lencode - state->codes);
- copy->distcode = copy->codes + (state->distcode - state->codes);
- }
- copy->next = copy->codes + (state->next - state->codes);
- if (window != Z_NULL) {
- wsize = 1U << state->wbits;
- zmemcpy(window, state->window, wsize);
- }
- copy->window = window;
- dest->state = (struct internal_state FAR *)copy;
- return Z_OK;
-}
+++ /dev/null
-/* inflate.h -- internal inflate state definition
- * Copyright (C) 1995-2004 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* define NO_GZIP when compiling if you want to disable gzip header and
- trailer decoding by inflate(). NO_GZIP would be used to avoid linking in
- the crc code when it is not needed. For shared libraries, gzip decoding
- should be left enabled. */
-#ifndef NO_GZIP
-# define GUNZIP
-#endif
-
-/* Possible inflate modes between inflate() calls */
-typedef enum {
- HEAD, /* i: waiting for magic header */
- FLAGS, /* i: waiting for method and flags (gzip) */
- TIME, /* i: waiting for modification time (gzip) */
- OS, /* i: waiting for extra flags and operating system (gzip) */
- EXLEN, /* i: waiting for extra length (gzip) */
- EXTRA, /* i: waiting for extra bytes (gzip) */
- NAME, /* i: waiting for end of file name (gzip) */
- COMMENT, /* i: waiting for end of comment (gzip) */
- HCRC, /* i: waiting for header crc (gzip) */
- DICTID, /* i: waiting for dictionary check value */
- DICT, /* waiting for inflateSetDictionary() call */
- TYPE, /* i: waiting for type bits, including last-flag bit */
- TYPEDO, /* i: same, but skip check to exit inflate on new block */
- STORED, /* i: waiting for stored size (length and complement) */
- COPY, /* i/o: waiting for input or output to copy stored block */
- TABLE, /* i: waiting for dynamic block table lengths */
- LENLENS, /* i: waiting for code length code lengths */
- CODELENS, /* i: waiting for length/lit and distance code lengths */
- LEN, /* i: waiting for length/lit code */
- LENEXT, /* i: waiting for length extra bits */
- DIST, /* i: waiting for distance code */
- DISTEXT, /* i: waiting for distance extra bits */
- MATCH, /* o: waiting for output space to copy string */
- LIT, /* o: waiting for output space to write literal */
- CHECK, /* i: waiting for 32-bit check value */
- LENGTH, /* i: waiting for 32-bit length (gzip) */
- DONE, /* finished check, done -- remain here until reset */
- BAD_DATA, /* got a data error -- remain here until reset */
- MEM, /* got an inflate() memory error -- remain here until reset */
- SYNC /* looking for synchronization bytes to restart inflate() */
-} inflate_mode;
-
-/*
- State transitions between above modes -
-
- (most modes can go to the BAD_DATA or MEM mode -- not shown for clarity)
-
- Process header:
- HEAD -> (gzip) or (zlib)
- (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME
- NAME -> COMMENT -> HCRC -> TYPE
- (zlib) -> DICTID or TYPE
- DICTID -> DICT -> TYPE
- Read deflate blocks:
- TYPE -> STORED or TABLE or LEN or CHECK
- STORED -> COPY -> TYPE
- TABLE -> LENLENS -> CODELENS -> LEN
- Read deflate codes:
- LEN -> LENEXT or LIT or TYPE
- LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
- LIT -> LEN
- Process trailer:
- CHECK -> LENGTH -> DONE
- */
-
-/* state maintained between inflate() calls. Approximately 7K bytes. */
-struct inflate_state {
- inflate_mode mode; /* current inflate mode */
- int last; /* true if processing last block */
- int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
- int havedict; /* true if dictionary provided */
- int flags; /* gzip header method and flags (0 if zlib) */
- unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */
- unsigned long check; /* protected copy of check value */
- unsigned long total; /* protected copy of output count */
- gz_headerp head; /* where to save gzip header information */
- /* sliding window */
- unsigned wbits; /* log base 2 of requested window size */
- unsigned wsize; /* window size or zero if not using window */
- unsigned whave; /* valid bytes in the window */
- unsigned write; /* window write index */
- unsigned char FAR *window; /* allocated sliding window, if needed */
- /* bit accumulator */
- unsigned long hold; /* input bit accumulator */
- unsigned bits; /* number of bits in "in" */
- /* for string and stored block copying */
- unsigned length; /* literal or length of data to copy */
- unsigned offset; /* distance back to copy string from */
- /* for table and code decoding */
- unsigned extra; /* extra bits needed */
- /* fixed and dynamic code tables */
- code const FAR *lencode; /* starting table for length/literal codes */
- code const FAR *distcode; /* starting table for distance codes */
- unsigned lenbits; /* index bits for lencode */
- unsigned distbits; /* index bits for distcode */
- /* dynamic table building */
- unsigned ncode; /* number of code length code lengths */
- unsigned nlen; /* number of length code lengths */
- unsigned ndist; /* number of distance code lengths */
- unsigned have; /* number of code lengths in lens[] */
- code FAR *next; /* next available space in codes[] */
- unsigned short lens[320]; /* temporary storage for code lengths */
- unsigned short work[288]; /* work area for code table building */
- code codes[ENOUGH]; /* space for code tables */
-};
+++ /dev/null
-/* inftrees.c -- generate Huffman trees for efficient decoding
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-
-#define MAXBITS 15
-
-const char inflate_copyright[] =
- " inflate 1.2.3 Copyright 1995-2005 Mark Adler ";
-/*
- If you use the zlib library in a product, an acknowledgment is welcome
- in the documentation of your product. If for some reason you cannot
- include such an acknowledgment, I would appreciate that you keep this
- copyright string in the executable of your product.
- */
-
-/*
- Build a set of tables to decode the provided canonical Huffman code.
- The code lengths are lens[0..codes-1]. The result starts at *table,
- whose indices are 0..2^bits-1. work is a writable array of at least
- lens shorts, which is used as a work area. type is the type of code
- to be generated, CODES, LENS, or DISTS. On return, zero is success,
- -1 is an invalid code, and +1 means that ENOUGH isn't enough. table
- on return points to the next available entry's address. bits is the
- requested root table index bits, and on return it is the actual root
- table index bits. It will differ if the request is greater than the
- longest code or if it is less than the shortest code.
- */
-int inflate_table(type, lens, codes, table, bits, work)
-codetype type;
-unsigned short FAR *lens;
-unsigned codes;
-code FAR * FAR *table;
-unsigned FAR *bits;
-unsigned short FAR *work;
-{
- unsigned len; /* a code's length in bits */
- unsigned sym; /* index of code symbols */
- unsigned min, max; /* minimum and maximum code lengths */
- unsigned root; /* number of index bits for root table */
- unsigned curr; /* number of index bits for current table */
- unsigned drop; /* code bits to drop for sub-table */
- int left; /* number of prefix codes available */
- unsigned used; /* code entries in table used */
- unsigned huff; /* Huffman code */
- unsigned incr; /* for incrementing code, index */
- unsigned fill; /* index for replicating entries */
- unsigned low; /* low bits for current root entry */
- unsigned mask; /* mask for low root bits */
- code this; /* table entry for duplication */
- code FAR *next; /* next available space in table */
- const unsigned short FAR *base; /* base value table to use */
- const unsigned short FAR *extra; /* extra bits table to use */
- int end; /* use base and extra for symbol > end */
- unsigned short count[MAXBITS+1]; /* number of codes of each length */
- unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
- static const unsigned short lbase[31] = { /* Length codes 257..285 base */
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
- 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
- static const unsigned short lext[31] = { /* Length codes 257..285 extra */
- 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
- 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 201, 196};
- static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
- 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
- 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
- 8193, 12289, 16385, 24577, 0, 0};
- static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
- 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
- 23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
- 28, 28, 29, 29, 64, 64};
-
- /*
- Process a set of code lengths to create a canonical Huffman code. The
- code lengths are lens[0..codes-1]. Each length corresponds to the
- symbols 0..codes-1. The Huffman code is generated by first sorting the
- symbols by length from short to long, and retaining the symbol order
- for codes with equal lengths. Then the code starts with all zero bits
- for the first code of the shortest length, and the codes are integer
- increments for the same length, and zeros are appended as the length
- increases. For the deflate format, these bits are stored backwards
- from their more natural integer increment ordering, and so when the
- decoding tables are built in the large loop below, the integer codes
- are incremented backwards.
-
- This routine assumes, but does not check, that all of the entries in
- lens[] are in the range 0..MAXBITS. The caller must assure this.
- 1..MAXBITS is interpreted as that code length. zero means that that
- symbol does not occur in this code.
-
- The codes are sorted by computing a count of codes for each length,
- creating from that a table of starting indices for each length in the
- sorted table, and then entering the symbols in order in the sorted
- table. The sorted table is work[], with that space being provided by
- the caller.
-
- The length counts are used for other purposes as well, i.e. finding
- the minimum and maximum length codes, determining if there are any
- codes at all, checking for a valid set of lengths, and looking ahead
- at length counts to determine sub-table sizes when building the
- decoding tables.
- */
-
- /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
- for (len = 0; len <= MAXBITS; len++)
- count[len] = 0;
- for (sym = 0; sym < codes; sym++)
- count[lens[sym]]++;
-
- /* bound code lengths, force root to be within code lengths */
- root = *bits;
- for (max = MAXBITS; max >= 1; max--)
- if (count[max] != 0) break;
- if (root > max) root = max;
- if (max == 0) { /* no symbols to code at all */
- this.op = (unsigned char)64; /* invalid code marker */
- this.bits = (unsigned char)1;
- this.val = (unsigned short)0;
- *(*table)++ = this; /* make a table to force an error */
- *(*table)++ = this;
- *bits = 1;
- return 0; /* no symbols, but wait for decoding to report error */
- }
- for (min = 1; min <= MAXBITS; min++)
- if (count[min] != 0) break;
- if (root < min) root = min;
-
- /* check for an over-subscribed or incomplete set of lengths */
- left = 1;
- for (len = 1; len <= MAXBITS; len++) {
- left <<= 1;
- left -= count[len];
- if (left < 0) return -1; /* over-subscribed */
- }
- if (left > 0 && (type == CODES || max != 1))
- return -1; /* incomplete set */
-
- /* generate offsets into symbol table for each length for sorting */
- offs[1] = 0;
- for (len = 1; len < MAXBITS; len++)
- offs[len + 1] = offs[len] + count[len];
-
- /* sort symbols by length, by symbol order within each length */
- for (sym = 0; sym < codes; sym++)
- if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
-
- /*
- Create and fill in decoding tables. In this loop, the table being
- filled is at next and has curr index bits. The code being used is huff
- with length len. That code is converted to an index by dropping drop
- bits off of the bottom. For codes where len is less than drop + curr,
- those top drop + curr - len bits are incremented through all values to
- fill the table with replicated entries.
-
- root is the number of index bits for the root table. When len exceeds
- root, sub-tables are created pointed to by the root entry with an index
- of the low root bits of huff. This is saved in low to check for when a
- new sub-table should be started. drop is zero when the root table is
- being filled, and drop is root when sub-tables are being filled.
-
- When a new sub-table is needed, it is necessary to look ahead in the
- code lengths to determine what size sub-table is needed. The length
- counts are used for this, and so count[] is decremented as codes are
- entered in the tables.
-
- used keeps track of how many table entries have been allocated from the
- provided *table space. It is checked when a LENS table is being made
- against the space in *table, ENOUGH, minus the maximum space needed by
- the worst case distance code, MAXD. This should never happen, but the
- sufficiency of ENOUGH has not been proven exhaustively, hence the check.
- This assumes that when type == LENS, bits == 9.
-
- sym increments through all symbols, and the loop terminates when
- all codes of length max, i.e. all codes, have been processed. This
- routine permits incomplete codes, so another loop after this one fills
- in the rest of the decoding tables with invalid code markers.
- */
-
- /* set up for code type */
- switch (type) {
- case CODES:
- base = extra = work; /* dummy value--not used */
- end = 19;
- break;
- case LENS:
- base = lbase;
- base -= 257;
- extra = lext;
- extra -= 257;
- end = 256;
- break;
- default: /* DISTS */
- base = dbase;
- extra = dext;
- end = -1;
- }
-
- /* initialize state for loop */
- huff = 0; /* starting code */
- sym = 0; /* starting code symbol */
- len = min; /* starting code length */
- next = *table; /* current table to fill in */
- curr = root; /* current table index bits */
- drop = 0; /* current bits to drop from code for index */
- low = (unsigned)(-1); /* trigger new sub-table when len > root */
- used = 1U << root; /* use root table entries */
- mask = used - 1; /* mask for comparing low */
-
- /* check available table space */
- if (type == LENS && used >= ENOUGH - MAXD)
- return 1;
-
- /* process all codes and make table entries */
- for (;;) {
- /* create table entry */
- this.bits = (unsigned char)(len - drop);
- if ((int)(work[sym]) < end) {
- this.op = (unsigned char)0;
- this.val = work[sym];
- }
- else if ((int)(work[sym]) > end) {
- this.op = (unsigned char)(extra[work[sym]]);
- this.val = base[work[sym]];
- }
- else {
- this.op = (unsigned char)(32 + 64); /* end of block */
- this.val = 0;
- }
-
- /* replicate for those indices with low len bits equal to huff */
- incr = 1U << (len - drop);
- fill = 1U << curr;
- min = fill; /* save offset to next table */
- do {
- fill -= incr;
- next[(huff >> drop) + fill] = this;
- } while (fill != 0);
-
- /* backwards increment the len-bit code huff */
- incr = 1U << (len - 1);
- while (huff & incr)
- incr >>= 1;
- if (incr != 0) {
- huff &= incr - 1;
- huff += incr;
- }
- else
- huff = 0;
-
- /* go to next symbol, update count, len */
- sym++;
- if (--(count[len]) == 0) {
- if (len == max) break;
- len = lens[work[sym]];
- }
-
- /* create new sub-table if needed */
- if (len > root && (huff & mask) != low) {
- /* if first time, transition to sub-tables */
- if (drop == 0)
- drop = root;
-
- /* increment past last table */
- next += min; /* here min is 1 << curr */
-
- /* determine length of next table */
- curr = len - drop;
- left = (int)(1 << curr);
- while (curr + drop < max) {
- left -= count[curr + drop];
- if (left <= 0) break;
- curr++;
- left <<= 1;
- }
-
- /* check for enough space */
- used += 1U << curr;
- if (type == LENS && used >= ENOUGH - MAXD)
- return 1;
-
- /* point entry in root table to sub-table */
- low = huff & mask;
- (*table)[low].op = (unsigned char)curr;
- (*table)[low].bits = (unsigned char)root;
- (*table)[low].val = (unsigned short)(next - *table);
- }
- }
-
- /*
- Fill in rest of table for incomplete codes. This loop is similar to the
- loop above in incrementing huff for table indices. It is assumed that
- len is equal to curr + drop, so there is no loop needed to increment
- through high index bits. When the current sub-table is filled, the loop
- drops back to the root table to fill in any remaining entries there.
- */
- this.op = (unsigned char)64; /* invalid code marker */
- this.bits = (unsigned char)(len - drop);
- this.val = (unsigned short)0;
- while (huff != 0) {
- /* when done with sub-table, drop back to root table */
- if (drop != 0 && (huff & mask) != low) {
- drop = 0;
- len = root;
- next = *table;
- this.bits = (unsigned char)len;
- }
-
- /* put invalid code marker in table */
- next[huff >> drop] = this;
-
- /* backwards increment the len-bit code huff */
- incr = 1U << (len - 1);
- while (huff & incr)
- incr >>= 1;
- if (incr != 0) {
- huff &= incr - 1;
- huff += incr;
- }
- else
- huff = 0;
- }
-
- /* set return parameters */
- *table += used;
- *bits = root;
- return 0;
-}
+++ /dev/null
-/* inftrees.h -- header to use inftrees.c
- * Copyright (C) 1995-2005 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* Structure for decoding tables. Each entry provides either the
- information needed to do the operation requested by the code that
- indexed that table entry, or it provides a pointer to another
- table that indexes more bits of the code. op indicates whether
- the entry is a pointer to another table, a literal, a length or
- distance, an end-of-block, or an invalid code. For a table
- pointer, the low four bits of op is the number of index bits of
- that table. For a length or distance, the low four bits of op
- is the number of extra bits to get after the code. bits is
- the number of bits in this code or part of the code to drop off
- of the bit buffer. val is the actual byte to output in the case
- of a literal, the base length or distance, or the offset from
- the current table to the next table. Each entry is four bytes. */
-typedef struct {
- unsigned char op; /* operation, extra bits, table bits */
- unsigned char bits; /* bits in this part of the code */
- unsigned short val; /* offset in table or code value */
-} code;
-
-/* op values as set by inflate_table():
- 00000000 - literal
- 0000tttt - table link, tttt != 0 is the number of table index bits
- 0001eeee - length or distance, eeee is the number of extra bits
- 01100000 - end of block
- 01000000 - invalid code
- */
-
-/* Maximum size of dynamic tree. The maximum found in a long but non-
- exhaustive search was 1444 code structures (852 for length/literals
- and 592 for distances, the latter actually the result of an
- exhaustive search). The true maximum is not known, but the value
- below is more than safe. */
-#define ENOUGH 2048
-#define MAXD 592
-
-/* Type of code to build for inftable() */
-typedef enum {
- CODES,
- LENS,
- DISTS
-} codetype;
-
-extern int inflate_table OF((codetype type, unsigned short FAR *lens,
- unsigned codes, code FAR * FAR *table,
- unsigned FAR *bits, unsigned short FAR *work));
+++ /dev/null
-$! make libz under VMS written by
-$! Martin P.J. Zinser
-$! <zinser@zinser.no-ip.info or zinser@sysdev.deutsche-boerse.com>
-$!
-$ on error then goto err_exit
-$!
-$!
-$! Just some general constants...
-$!
-$ true = 1
-$ false = 0
-$ tmpnam = "temp_" + f$getjpi("","pid")
-$ SAY = "WRITE SYS$OUTPUT"
-$!
-$! Setup variables holding "config" information
-$!
-$ Make = ""
-$ name = "Zlib"
-$ version = "?.?.?"
-$ v_string = "ZLIB_VERSION"
-$ v_file = "zlib.h"
-$ ccopt = ""
-$ lopts = ""
-$ linkonly = false
-$ optfile = name + ".opt"
-$ its_decc = false
-$ its_vaxc = false
-$ its_gnuc = false
-$ axp = f$getsyi("HW_MODEL").ge.1024
-$ s_case = false
-$! Check for MMK/MMS
-$!
-$ If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
-$ If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
-$!
-$!
-$ gosub find_version
-$!
-$ gosub check_opts
-$!
-$! Look for the compiler used
-$!
-$ gosub check_compiler
-$ if its_decc
-$ then
-$ ccopt = "/prefix=all" + ccopt
-$ if f$trnlnm("SYS") .eqs. ""
-$ then
-$ if axp
-$ then
-$ define sys sys$library:
-$ else
-$ ccopt = "/decc" + ccopt
-$ define sys decc$library_include:
-$ endif
-$ endif
-$ endif
-$ if its_vaxc .or. its_gnuc
-$ then
-$ if f$trnlnm("SYS").eqs."" then define sys sys$library:
-$ endif
-$!
-$! Build the thing plain or with mms
-$!
-$ write sys$output "Compiling Zlib sources ..."
-$ if make.eqs.""
-$ then
-$ dele example.obj;*,minigzip.obj;*
-$ CALL MAKE adler32.OBJ "CC ''CCOPT' adler32" -
- adler32.c zlib.h zconf.h
-$ CALL MAKE compress.OBJ "CC ''CCOPT' compress" -
- compress.c zlib.h zconf.h
-$ CALL MAKE crc32.OBJ "CC ''CCOPT' crc32" -
- crc32.c zlib.h zconf.h
-$ CALL MAKE deflate.OBJ "CC ''CCOPT' deflate" -
- deflate.c deflate.h zutil.h zlib.h zconf.h
-$ CALL MAKE gzio.OBJ "CC ''CCOPT' gzio" -
- gzio.c zutil.h zlib.h zconf.h
-$ CALL MAKE infback.OBJ "CC ''CCOPT' infback" -
- infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h
-$ CALL MAKE inffast.OBJ "CC ''CCOPT' inffast" -
- inffast.c zutil.h zlib.h zconf.h inffast.h
-$ CALL MAKE inflate.OBJ "CC ''CCOPT' inflate" -
- inflate.c zutil.h zlib.h zconf.h infblock.h
-$ CALL MAKE inftrees.OBJ "CC ''CCOPT' inftrees" -
- inftrees.c zutil.h zlib.h zconf.h inftrees.h
-$ CALL MAKE trees.OBJ "CC ''CCOPT' trees" -
- trees.c deflate.h zutil.h zlib.h zconf.h
-$ CALL MAKE uncompr.OBJ "CC ''CCOPT' uncompr" -
- uncompr.c zlib.h zconf.h
-$ CALL MAKE zutil.OBJ "CC ''CCOPT' zutil" -
- zutil.c zutil.h zlib.h zconf.h
-$ write sys$output "Building Zlib ..."
-$ CALL MAKE libz.OLB "lib/crea libz.olb *.obj" *.OBJ
-$ write sys$output "Building example..."
-$ CALL MAKE example.OBJ "CC ''CCOPT' example" -
- example.c zlib.h zconf.h
-$ call make example.exe "LINK example,libz.olb/lib" example.obj libz.olb
-$ if f$search("x11vms:xvmsutils.olb") .nes. ""
-$ then
-$ write sys$output "Building minigzip..."
-$ CALL MAKE minigzip.OBJ "CC ''CCOPT' minigzip" -
- minigzip.c zlib.h zconf.h
-$ call make minigzip.exe -
- "LINK minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib" -
- minigzip.obj libz.olb
-$ endif
-$ else
-$ gosub crea_mms
-$ SAY "Make ''name' ''version' with ''Make' "
-$ 'make'
-$ endif
-$!
-$! Alpha gets a shareable image
-$!
-$ If axp
-$ Then
-$ gosub crea_olist
-$ write sys$output "Creating libzshr.exe"
-$ call anal_obj_axp modules.opt _link.opt
-$ if s_case
-$ then
-$ open/append optf modules.opt
-$ write optf "case_sensitive=YES"
-$ close optf
-$ endif
-$ LINK_'lopts'/SHARE=libzshr.exe modules.opt/opt,_link.opt/opt
-$ endif
-$ write sys$output "Zlib build completed"
-$ exit
-$CC_ERR:
-$ write sys$output "C compiler required to build ''name'"
-$ goto err_exit
-$ERR_EXIT:
-$ set message/facil/ident/sever/text
-$ write sys$output "Exiting..."
-$ exit 2
-$!
-$!
-$MAKE: SUBROUTINE !SUBROUTINE TO CHECK DEPENDENCIES
-$ V = 'F$Verify(0)
-$! P1 = What we are trying to make
-$! P2 = Command to make it
-$! P3 - P8 What it depends on
-$
-$ If F$Search(P1) .Eqs. "" Then Goto Makeit
-$ Time = F$CvTime(F$File(P1,"RDT"))
-$arg=3
-$Loop:
-$ Argument = P'arg
-$ If Argument .Eqs. "" Then Goto Exit
-$ El=0
-$Loop2:
-$ File = F$Element(El," ",Argument)
-$ If File .Eqs. " " Then Goto Endl
-$ AFile = ""
-$Loop3:
-$ OFile = AFile
-$ AFile = F$Search(File)
-$ If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl
-$ If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit
-$ Goto Loop3
-$NextEL:
-$ El = El + 1
-$ Goto Loop2
-$EndL:
-$ arg=arg+1
-$ If arg .Le. 8 Then Goto Loop
-$ Goto Exit
-$
-$Makeit:
-$ VV=F$VERIFY(0)
-$ write sys$output P2
-$ 'P2
-$ VV='F$Verify(VV)
-$Exit:
-$ If V Then Set Verify
-$ENDSUBROUTINE
-$!------------------------------------------------------------------------------
-$!
-$! Check command line options and set symbols accordingly
-$!
-$ CHECK_OPTS:
-$ i = 1
-$ OPT_LOOP:
-$ if i .lt. 9
-$ then
-$ cparm = f$edit(p'i',"upcase")
-$ if cparm .eqs. "DEBUG"
-$ then
-$ ccopt = ccopt + "/noopt/deb"
-$ lopts = lopts + "/deb"
-$ endif
-$ if f$locate("CCOPT=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ ccopt = ccopt + f$extract(start,len,cparm)
-$ if f$locate("AS_IS",f$edit(ccopt,"UPCASE")) .lt. f$length(ccopt) -
- then s_case = true
-$ endif
-$ if cparm .eqs. "LINK" then linkonly = true
-$ if f$locate("LOPTS=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ lopts = lopts + f$extract(start,len,cparm)
-$ endif
-$ if f$locate("CC=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ cc_com = f$extract(start,len,cparm)
- if (cc_com .nes. "DECC") .and. -
- (cc_com .nes. "VAXC") .and. -
- (cc_com .nes. "GNUC")
-$ then
-$ write sys$output "Unsupported compiler choice ''cc_com' ignored"
-$ write sys$output "Use DECC, VAXC, or GNUC instead"
-$ else
-$ if cc_com .eqs. "DECC" then its_decc = true
-$ if cc_com .eqs. "VAXC" then its_vaxc = true
-$ if cc_com .eqs. "GNUC" then its_gnuc = true
-$ endif
-$ endif
-$ if f$locate("MAKE=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ mmks = f$extract(start,len,cparm)
-$ if (mmks .eqs. "MMK") .or. (mmks .eqs. "MMS")
-$ then
-$ make = mmks
-$ else
-$ write sys$output "Unsupported make choice ''mmks' ignored"
-$ write sys$output "Use MMK or MMS instead"
-$ endif
-$ endif
-$ i = i + 1
-$ goto opt_loop
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Look for the compiler used
-$!
-$CHECK_COMPILER:
-$ if (.not. (its_decc .or. its_vaxc .or. its_gnuc))
-$ then
-$ its_decc = (f$search("SYS$SYSTEM:DECC$COMPILER.EXE") .nes. "")
-$ its_vaxc = .not. its_decc .and. (F$Search("SYS$System:VAXC.Exe") .nes. "")
-$ its_gnuc = .not. (its_decc .or. its_vaxc) .and. (f$trnlnm("gnu_cc") .nes. "")
-$ endif
-$!
-$! Exit if no compiler available
-$!
-$ if (.not. (its_decc .or. its_vaxc .or. its_gnuc))
-$ then goto CC_ERR
-$ else
-$ if its_decc then write sys$output "CC compiler check ... Compaq C"
-$ if its_vaxc then write sys$output "CC compiler check ... VAX C"
-$ if its_gnuc then write sys$output "CC compiler check ... GNU C"
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! If MMS/MMK are available dump out the descrip.mms if required
-$!
-$CREA_MMS:
-$ write sys$output "Creating descrip.mms..."
-$ create descrip.mms
-$ open/append out descrip.mms
-$ copy sys$input: out
-$ deck
-# descrip.mms: MMS description file for building zlib on VMS
-# written by Martin P.J. Zinser
-# <zinser@zinser.no-ip.info or zinser@sysdev.deutsche-boerse.com>
-
-OBJS = adler32.obj, compress.obj, crc32.obj, gzio.obj, uncompr.obj, infback.obj\
- deflate.obj, trees.obj, zutil.obj, inflate.obj, \
- inftrees.obj, inffast.obj
-
-$ eod
-$ write out "CFLAGS=", ccopt
-$ write out "LOPTS=", lopts
-$ copy sys$input: out
-$ deck
-
-all : example.exe minigzip.exe libz.olb
- @ write sys$output " Example applications available"
-
-libz.olb : libz.olb($(OBJS))
- @ write sys$output " libz available"
-
-example.exe : example.obj libz.olb
- link $(LOPTS) example,libz.olb/lib
-
-minigzip.exe : minigzip.obj libz.olb
- link $(LOPTS) minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib
-
-clean :
- delete *.obj;*,libz.olb;*,*.opt;*,*.exe;*
-
-
-# Other dependencies.
-adler32.obj : adler32.c zutil.h zlib.h zconf.h
-compress.obj : compress.c zlib.h zconf.h
-crc32.obj : crc32.c zutil.h zlib.h zconf.h
-deflate.obj : deflate.c deflate.h zutil.h zlib.h zconf.h
-example.obj : example.c zlib.h zconf.h
-gzio.obj : gzio.c zutil.h zlib.h zconf.h
-inffast.obj : inffast.c zutil.h zlib.h zconf.h inftrees.h inffast.h
-inflate.obj : inflate.c zutil.h zlib.h zconf.h
-inftrees.obj : inftrees.c zutil.h zlib.h zconf.h inftrees.h
-minigzip.obj : minigzip.c zlib.h zconf.h
-trees.obj : trees.c deflate.h zutil.h zlib.h zconf.h
-uncompr.obj : uncompr.c zlib.h zconf.h
-zutil.obj : zutil.c zutil.h zlib.h zconf.h
-infback.obj : infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h
-$ eod
-$ close out
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Read list of core library sources from makefile.in and create options
-$! needed to build shareable image
-$!
-$CREA_OLIST:
-$ open/read min makefile.in
-$ open/write mod modules.opt
-$ src_check = "OBJS ="
-$MRLOOP:
-$ read/end=mrdone min rec
-$ if (f$extract(0,6,rec) .nes. src_check) then goto mrloop
-$ rec = rec - src_check
-$ gosub extra_filnam
-$ if (f$element(1,"\",rec) .eqs. "\") then goto mrdone
-$MRSLOOP:
-$ read/end=mrdone min rec
-$ gosub extra_filnam
-$ if (f$element(1,"\",rec) .nes. "\") then goto mrsloop
-$MRDONE:
-$ close min
-$ close mod
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Take record extracted in crea_olist and split it into single filenames
-$!
-$EXTRA_FILNAM:
-$ myrec = f$edit(rec - "\", "trim,compress")
-$ i = 0
-$FELOOP:
-$ srcfil = f$element(i," ", myrec)
-$ if (srcfil .nes. " ")
-$ then
-$ write mod f$parse(srcfil,,,"NAME"), ".obj"
-$ i = i + 1
-$ goto feloop
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Find current Zlib version number
-$!
-$FIND_VERSION:
-$ open/read h_in 'v_file'
-$hloop:
-$ read/end=hdone h_in rec
-$ rec = f$edit(rec,"TRIM")
-$ if (f$extract(0,1,rec) .nes. "#") then goto hloop
-$ rec = f$edit(rec - "#", "TRIM")
-$ if f$element(0," ",rec) .nes. "define" then goto hloop
-$ if f$element(1," ",rec) .eqs. v_string
-$ then
-$ version = 'f$element(2," ",rec)'
-$ goto hdone
-$ endif
-$ goto hloop
-$hdone:
-$ close h_in
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Analyze Object files for OpenVMS AXP to extract Procedure and Data
-$! information to build a symbol vector for a shareable image
-$! All the "brains" of this logic was suggested by Hartmut Becker
-$! (Hartmut.Becker@compaq.com). All the bugs were introduced by me
-$! (zinser@decus.de), so if you do have problem reports please do not
-$! bother Hartmut/HP, but get in touch with me
-$!
-$ ANAL_OBJ_AXP: Subroutine
-$ V = 'F$Verify(0)
-$ SAY := "WRITE_ SYS$OUTPUT"
-$
-$ IF F$SEARCH("''P1'") .EQS. ""
-$ THEN
-$ SAY "ANAL_OBJ_AXP-E-NOSUCHFILE: Error, inputfile ''p1' not available"
-$ goto exit_aa
-$ ENDIF
-$ IF "''P2'" .EQS. ""
-$ THEN
-$ SAY "ANAL_OBJ_AXP: Error, no output file provided"
-$ goto exit_aa
-$ ENDIF
-$
-$ open/read in 'p1
-$ create a.tmp
-$ open/append atmp a.tmp
-$ loop:
-$ read/end=end_loop in line
-$ f= f$search(line)
-$ if f .eqs. ""
-$ then
-$ write sys$output "ANAL_OBJ_AXP-w-nosuchfile, ''line'"
-$ goto loop
-$ endif
-$ define/user sys$output nl:
-$ define/user sys$error nl:
-$ anal/obj/gsd 'f /out=x.tmp
-$ open/read xtmp x.tmp
-$ XLOOP:
-$ read/end=end_xloop xtmp xline
-$ xline = f$edit(xline,"compress")
-$ write atmp xline
-$ goto xloop
-$ END_XLOOP:
-$ close xtmp
-$ goto loop
-$ end_loop:
-$ close in
-$ close atmp
-$ if f$search("a.tmp") .eqs. "" -
- then $ exit
-$ ! all global definitions
-$ search a.tmp "symbol:","EGSY$V_DEF 1","EGSY$V_NORM 1"/out=b.tmp
-$ ! all procedures
-$ search b.tmp "EGSY$V_NORM 1"/wind=(0,1) /out=c.tmp
-$ search c.tmp "symbol:"/out=d.tmp
-$ define/user sys$output nl:
-$ edito/edt/command=sys$input d.tmp
-sub/symbol: "/symbol_vector=(/whole
-sub/"/=PROCEDURE)/whole
-exit
-$ ! all data
-$ search b.tmp "EGSY$V_DEF 1"/wind=(0,1) /out=e.tmp
-$ search e.tmp "symbol:"/out=f.tmp
-$ define/user sys$output nl:
-$ edito/edt/command=sys$input f.tmp
-sub/symbol: "/symbol_vector=(/whole
-sub/"/=DATA)/whole
-exit
-$ sort/nodupl d.tmp,f.tmp 'p2'
-$ delete a.tmp;*,b.tmp;*,c.tmp;*,d.tmp;*,e.tmp;*,f.tmp;*
-$ if f$search("x.tmp") .nes. "" -
- then $ delete x.tmp;*
-$!
-$ EXIT_AA:
-$ if V then set verify
-$ endsubroutine
-$!------------------------------------------------------------------------------
+++ /dev/null
-/* minigzip.c -- simulate gzip using the zlib compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * minigzip is a minimal implementation of the gzip utility. This is
- * only an example of using zlib and isn't meant to replace the
- * full-featured gzip. No attempt is made to deal with file systems
- * limiting names to 14 or 8+3 characters, etc... Error checking is
- * very limited. So use minigzip only for testing; use gzip for the
- * real thing. On MSDOS, use only on file names without extension
- * or in pipe mode.
- */
-
-/* @(#) $Id$ */
-
-#include <stdio.h>
-#include "zlib.h"
-
-#ifdef STDC
-# include <string.h>
-# include <stdlib.h>
-#endif
-
-#ifdef USE_MMAP
-# include <sys/types.h>
-# include <sys/mman.h>
-# include <sys/stat.h>
-#endif
-
-#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
-# include <fcntl.h>
-# include <io.h>
-# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
-#else
-# define SET_BINARY_MODE(file)
-#endif
-
-#ifdef VMS
-# define unlink delete
-# define GZ_SUFFIX "-gz"
-#endif
-#ifdef RISCOS
-# define unlink remove
-# define GZ_SUFFIX "-gz"
-# define fileno(file) file->__file
-#endif
-#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-# include <unix.h> /* for fileno */
-#endif
-
-#ifndef WIN32 /* unlink already in stdio.h for WIN32 */
- extern int unlink OF((const char *));
-#endif
-
-#ifndef GZ_SUFFIX
-# define GZ_SUFFIX ".gz"
-#endif
-#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1)
-
-#define BUFLEN 16384
-#define MAX_NAME_LEN 1024
-
-#ifdef MAXSEG_64K
-# define local static
- /* Needed for systems with limitation on stack size. */
-#else
-# define local
-#endif
-
-char *prog;
-
-void error OF((const char *msg));
-void gz_compress OF((FILE *in, gzFile out));
-#ifdef USE_MMAP
-int gz_compress_mmap OF((FILE *in, gzFile out));
-#endif
-void gz_uncompress OF((gzFile in, FILE *out));
-void file_compress OF((char *file, char *mode));
-void file_uncompress OF((char *file));
-int main OF((int argc, char *argv[]));
-
-/* ===========================================================================
- * Display error message and exit
- */
-void error(msg)
- const char *msg;
-{
- fprintf(stderr, "%s: %s\n", prog, msg);
- exit(1);
-}
-
-/* ===========================================================================
- * Compress input to output then close both files.
- */
-
-void gz_compress(in, out)
- FILE *in;
- gzFile out;
-{
- local char buf[BUFLEN];
- int len;
- int err;
-
-#ifdef USE_MMAP
- /* Try first compressing with mmap. If mmap fails (minigzip used in a
- * pipe), use the normal fread loop.
- */
- if (gz_compress_mmap(in, out) == Z_OK) return;
-#endif
- for (;;) {
- len = (int)fread(buf, 1, sizeof(buf), in);
- if (ferror(in)) {
- perror("fread");
- exit(1);
- }
- if (len == 0) break;
-
- if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err));
- }
- fclose(in);
- if (gzclose(out) != Z_OK) error("failed gzclose");
-}
-
-#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */
-
-/* Try compressing the input file at once using mmap. Return Z_OK if
- * if success, Z_ERRNO otherwise.
- */
-int gz_compress_mmap(in, out)
- FILE *in;
- gzFile out;
-{
- int len;
- int err;
- int ifd = fileno(in);
- caddr_t buf; /* mmap'ed buffer for the entire input file */
- off_t buf_len; /* length of the input file */
- struct stat sb;
-
- /* Determine the size of the file, needed for mmap: */
- if (fstat(ifd, &sb) < 0) return Z_ERRNO;
- buf_len = sb.st_size;
- if (buf_len <= 0) return Z_ERRNO;
-
- /* Now do the actual mmap: */
- buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0);
- if (buf == (caddr_t)(-1)) return Z_ERRNO;
-
- /* Compress the whole file at once: */
- len = gzwrite(out, (char *)buf, (unsigned)buf_len);
-
- if (len != (int)buf_len) error(gzerror(out, &err));
-
- munmap(buf, buf_len);
- fclose(in);
- if (gzclose(out) != Z_OK) error("failed gzclose");
- return Z_OK;
-}
-#endif /* USE_MMAP */
-
-/* ===========================================================================
- * Uncompress input to output then close both files.
- */
-void gz_uncompress(in, out)
- gzFile in;
- FILE *out;
-{
- local char buf[BUFLEN];
- int len;
- int err;
-
- for (;;) {
- len = gzread(in, buf, sizeof(buf));
- if (len < 0) error (gzerror(in, &err));
- if (len == 0) break;
-
- if ((int)fwrite(buf, 1, (unsigned)len, out) != len) {
- error("failed fwrite");
- }
- }
- if (fclose(out)) error("failed fclose");
-
- if (gzclose(in) != Z_OK) error("failed gzclose");
-}
-
-
-/* ===========================================================================
- * Compress the given file: create a corresponding .gz file and remove the
- * original.
- */
-void file_compress(file, mode)
- char *file;
- char *mode;
-{
- local char outfile[MAX_NAME_LEN];
- FILE *in;
- gzFile out;
-
- strcpy(outfile, file);
- strcat(outfile, GZ_SUFFIX);
-
- in = fopen(file, "rb");
- if (in == NULL) {
- perror(file);
- exit(1);
- }
- out = gzopen(outfile, mode);
- if (out == NULL) {
- fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile);
- exit(1);
- }
- gz_compress(in, out);
-
- unlink(file);
-}
-
-
-/* ===========================================================================
- * Uncompress the given file and remove the original.
- */
-void file_uncompress(file)
- char *file;
-{
- local char buf[MAX_NAME_LEN];
- char *infile, *outfile;
- FILE *out;
- gzFile in;
- uInt len = (uInt)strlen(file);
-
- strcpy(buf, file);
-
- if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) {
- infile = file;
- outfile = buf;
- outfile[len-3] = '\0';
- } else {
- outfile = file;
- infile = buf;
- strcat(infile, GZ_SUFFIX);
- }
- in = gzopen(infile, "rb");
- if (in == NULL) {
- fprintf(stderr, "%s: can't gzopen %s\n", prog, infile);
- exit(1);
- }
- out = fopen(outfile, "wb");
- if (out == NULL) {
- perror(file);
- exit(1);
- }
-
- gz_uncompress(in, out);
-
- unlink(infile);
-}
-
-
-/* ===========================================================================
- * Usage: minigzip [-d] [-f] [-h] [-r] [-1 to -9] [files...]
- * -d : decompress
- * -f : compress with Z_FILTERED
- * -h : compress with Z_HUFFMAN_ONLY
- * -r : compress with Z_RLE
- * -1 to -9 : compression level
- */
-
-int main(argc, argv)
- int argc;
- char *argv[];
-{
- int uncompr = 0;
- gzFile file;
- char outmode[20];
-
- strcpy(outmode, "wb6 ");
-
- prog = argv[0];
- argc--, argv++;
-
- while (argc > 0) {
- if (strcmp(*argv, "-d") == 0)
- uncompr = 1;
- else if (strcmp(*argv, "-f") == 0)
- outmode[3] = 'f';
- else if (strcmp(*argv, "-h") == 0)
- outmode[3] = 'h';
- else if (strcmp(*argv, "-r") == 0)
- outmode[3] = 'R';
- else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' &&
- (*argv)[2] == 0)
- outmode[2] = (*argv)[1];
- else
- break;
- argc--, argv++;
- }
- if (outmode[3] == ' ')
- outmode[3] = 0;
- if (argc == 0) {
- SET_BINARY_MODE(stdin);
- SET_BINARY_MODE(stdout);
- if (uncompr) {
- file = gzdopen(fileno(stdin), "rb");
- if (file == NULL) error("can't gzdopen stdin");
- gz_uncompress(file, stdout);
- } else {
- file = gzdopen(fileno(stdout), outmode);
- if (file == NULL) error("can't gzdopen stdout");
- gz_compress(stdin, file);
- }
- } else {
- do {
- if (uncompr) {
- file_uncompress(*argv);
- } else {
- file_compress(*argv, outmode);
- }
- } while (argv++, --argc);
- }
- return 0;
-}
+++ /dev/null
-# Makefile for zlib
-# Borland C++
-# Last updated: 15-Mar-2003
-
-# To use, do "make -fmakefile.bor"
-# To compile in small model, set below: MODEL=s
-
-# WARNING: the small model is supported but only for small values of
-# MAX_WBITS and MAX_MEM_LEVEL. For example:
-# -DMAX_WBITS=11 -DDEF_WBITS=11 -DMAX_MEM_LEVEL=3
-# If you wish to reduce the memory requirements (default 256K for big
-# objects plus a few K), you can add to the LOC macro below:
-# -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14
-# See zconf.h for details about the memory requirements.
-
-# ------------ Turbo C++, Borland C++ ------------
-
-# Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7)
-# should be added to the environment via "set LOCAL_ZLIB=-DFOO" or added
-# to the declaration of LOC here:
-LOC = $(LOCAL_ZLIB)
-
-# type for CPU required: 0: 8086, 1: 80186, 2: 80286, 3: 80386, etc.
-CPU_TYP = 0
-
-# memory model: one of s, m, c, l (small, medium, compact, large)
-MODEL=l
-
-# replace bcc with tcc for Turbo C++ 1.0, with bcc32 for the 32 bit version
-CC=bcc
-LD=bcc
-AR=tlib
-
-# compiler flags
-# replace "-O2" by "-O -G -a -d" for Turbo C++ 1.0
-CFLAGS=-O2 -Z -m$(MODEL) $(LOC)
-
-LDFLAGS=-m$(MODEL) -f-
-
-
-# variables
-ZLIB_LIB = zlib_$(MODEL).lib
-
-OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
-OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
-OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
-
-
-# targets
-all: $(ZLIB_LIB) example.exe minigzip.exe
-
-.c.obj:
- $(CC) -c $(CFLAGS) $*.c
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
-
-minigzip.obj: minigzip.c zlib.h zconf.h
-
-
-# the command line is cut to fit in the MS-DOS 128 byte limit:
-$(ZLIB_LIB): $(OBJ1) $(OBJ2)
- -del $(ZLIB_LIB)
- $(AR) $(ZLIB_LIB) $(OBJP1)
- $(AR) $(ZLIB_LIB) $(OBJP2)
-
-example.exe: example.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
-
-minigzip.exe: minigzip.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
-
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-clean:
- -del *.obj
- -del *.lib
- -del *.exe
- -del zlib_*.bak
- -del foo.gz
+++ /dev/null
-# Makefile for zlib. Modified for djgpp v2.0 by F. J. Donahoe, 3/15/96.
-# Copyright (C) 1995-1998 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile, or to compile and test, type:
-#
-# make -fmakefile.dj2; make test -fmakefile.dj2
-#
-# To install libz.a, zconf.h and zlib.h in the djgpp directories, type:
-#
-# make install -fmakefile.dj2
-#
-# after first defining LIBRARY_PATH and INCLUDE_PATH in djgpp.env as
-# in the sample below if the pattern of the DJGPP distribution is to
-# be followed. Remember that, while <sp>'es around <=> are ignored in
-# makefiles, they are *not* in batch files or in djgpp.env.
-# - - - - -
-# [make]
-# INCLUDE_PATH=%\>;INCLUDE_PATH%%\DJDIR%\include
-# LIBRARY_PATH=%\>;LIBRARY_PATH%%\DJDIR%\lib
-# BUTT=-m486
-# - - - - -
-# Alternately, these variables may be defined below, overriding the values
-# in djgpp.env, as
-# INCLUDE_PATH=c:\usr\include
-# LIBRARY_PATH=c:\usr\lib
-
-CC=gcc
-
-#CFLAGS=-MMD -O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-MMD -g -DDEBUG
-CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
- -Wstrict-prototypes -Wmissing-prototypes
-
-# If cp.exe is available, replace "copy /Y" with "cp -fp" .
-CP=copy /Y
-# If gnu install.exe is available, replace $(CP) with ginstall.
-INSTALL=$(CP)
-# The default value of RM is "rm -f." If "rm.exe" is found, comment out:
-RM=del
-LDLIBS=-L. -lz
-LD=$(CC) -s -o
-LDSHARED=$(CC)
-
-INCL=zlib.h zconf.h
-LIBS=libz.a
-
-AR=ar rcs
-
-prefix=/usr/local
-exec_prefix = $(prefix)
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-OBJA =
-# to use the asm code: make OBJA=match.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: example.exe minigzip.exe
-
-check: test
-test: all
- ./example
- echo hello world | .\minigzip | .\minigzip -d
-
-%.o : %.c
- $(CC) $(CFLAGS) -c $< -o $@
-
-libz.a: $(OBJS) $(OBJA)
- $(AR) $@ $(OBJS) $(OBJA)
-
-%.exe : %.o $(LIBS)
- $(LD) $@ $< $(LDLIBS)
-
-# INCLUDE_PATH and LIBRARY_PATH were set for [make] in djgpp.env .
-
-.PHONY : uninstall clean
-
-install: $(INCL) $(LIBS)
- -@if not exist $(INCLUDE_PATH)\nul mkdir $(INCLUDE_PATH)
- -@if not exist $(LIBRARY_PATH)\nul mkdir $(LIBRARY_PATH)
- $(INSTALL) zlib.h $(INCLUDE_PATH)
- $(INSTALL) zconf.h $(INCLUDE_PATH)
- $(INSTALL) libz.a $(LIBRARY_PATH)
-
-uninstall:
- $(RM) $(INCLUDE_PATH)\zlib.h
- $(RM) $(INCLUDE_PATH)\zconf.h
- $(RM) $(LIBRARY_PATH)\libz.a
-
-clean:
- $(RM) *.d
- $(RM) *.o
- $(RM) *.exe
- $(RM) libz.a
- $(RM) foo.gz
-
-DEPS := $(wildcard *.d)
-ifneq ($(DEPS),)
-include $(DEPS)
-endif
+++ /dev/null
-# Makefile for zlib. Modified for emx 0.9c by Chr. Spieler, 6/17/98.
-# Copyright (C) 1995-1998 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile, or to compile and test, type:
-#
-# make -fmakefile.emx; make test -fmakefile.emx
-#
-
-CC=gcc
-
-#CFLAGS=-MMD -O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-MMD -g -DDEBUG
-CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
- -Wstrict-prototypes -Wmissing-prototypes
-
-# If cp.exe is available, replace "copy /Y" with "cp -fp" .
-CP=copy /Y
-# If gnu install.exe is available, replace $(CP) with ginstall.
-INSTALL=$(CP)
-# The default value of RM is "rm -f." If "rm.exe" is found, comment out:
-RM=del
-LDLIBS=-L. -lzlib
-LD=$(CC) -s -o
-LDSHARED=$(CC)
-
-INCL=zlib.h zconf.h
-LIBS=zlib.a
-
-AR=ar rcs
-
-prefix=/usr/local
-exec_prefix = $(prefix)
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: example.exe minigzip.exe
-
-test: all
- ./example
- echo hello world | .\minigzip | .\minigzip -d
-
-%.o : %.c
- $(CC) $(CFLAGS) -c $< -o $@
-
-zlib.a: $(OBJS)
- $(AR) $@ $(OBJS)
-
-%.exe : %.o $(LIBS)
- $(LD) $@ $< $(LDLIBS)
-
-
-.PHONY : clean
-
-clean:
- $(RM) *.d
- $(RM) *.o
- $(RM) *.exe
- $(RM) zlib.a
- $(RM) foo.gz
-
-DEPS := $(wildcard *.d)
-ifneq ($(DEPS),)
-include $(DEPS)
-endif
+++ /dev/null
-# Makefile for zlib
-# Microsoft C 5.1 or later
-# Last updated: 19-Mar-2003
-
-# To use, do "make makefile.msc"
-# To compile in small model, set below: MODEL=S
-
-# If you wish to reduce the memory requirements (default 256K for big
-# objects plus a few K), you can add to the LOC macro below:
-# -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14
-# See zconf.h for details about the memory requirements.
-
-# ------------- Microsoft C 5.1 and later -------------
-
-# Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7)
-# should be added to the environment via "set LOCAL_ZLIB=-DFOO" or added
-# to the declaration of LOC here:
-LOC = $(LOCAL_ZLIB)
-
-# Type for CPU required: 0: 8086, 1: 80186, 2: 80286, 3: 80386, etc.
-CPU_TYP = 0
-
-# Memory model: one of S, M, C, L (small, medium, compact, large)
-MODEL=L
-
-CC=cl
-CFLAGS=-nologo -A$(MODEL) -G$(CPU_TYP) -W3 -Oait -Gs $(LOC)
-#-Ox generates bad code with MSC 5.1
-LIB_CFLAGS=-Zl $(CFLAGS)
-
-LD=link
-LDFLAGS=/noi/e/st:0x1500/noe/farcall/packcode
-# "/farcall/packcode" are only useful for `large code' memory models
-# but should be a "no-op" for small code models.
-
-
-# variables
-ZLIB_LIB = zlib_$(MODEL).lib
-
-OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
-OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-
-
-# targets
-all: $(ZLIB_LIB) example.exe minigzip.exe
-
-.c.obj:
- $(CC) -c $(LIB_CFLAGS) $*.c
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
- $(CC) -c $(CFLAGS) $*.c
-
-minigzip.obj: minigzip.c zlib.h zconf.h
- $(CC) -c $(CFLAGS) $*.c
-
-
-# the command line is cut to fit in the MS-DOS 128 byte limit:
-$(ZLIB_LIB): $(OBJ1) $(OBJ2)
- if exist $(ZLIB_LIB) del $(ZLIB_LIB)
- lib $(ZLIB_LIB) $(OBJ1);
- lib $(ZLIB_LIB) $(OBJ2);
-
-example.exe: example.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) example.obj,,,$(ZLIB_LIB);
-
-minigzip.exe: minigzip.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) minigzip.obj,,,$(ZLIB_LIB);
-
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-clean:
- -del *.obj
- -del *.lib
- -del *.exe
- -del *.map
- -del zlib_*.bak
- -del foo.gz
+++ /dev/null
-# Makefile for zlib
-# Turbo C 2.01, Turbo C++ 1.01
-# Last updated: 15-Mar-2003
-
-# To use, do "make -fmakefile.tc"
-# To compile in small model, set below: MODEL=s
-
-# WARNING: the small model is supported but only for small values of
-# MAX_WBITS and MAX_MEM_LEVEL. For example:
-# -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
-# If you wish to reduce the memory requirements (default 256K for big
-# objects plus a few K), you can add to CFLAGS below:
-# -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14
-# See zconf.h for details about the memory requirements.
-
-# ------------ Turbo C 2.01, Turbo C++ 1.01 ------------
-MODEL=l
-CC=tcc
-LD=tcc
-AR=tlib
-# CFLAGS=-O2 -G -Z -m$(MODEL) -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
-CFLAGS=-O2 -G -Z -m$(MODEL)
-LDFLAGS=-m$(MODEL) -f-
-
-
-# variables
-ZLIB_LIB = zlib_$(MODEL).lib
-
-OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
-OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
-OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
-
-
-# targets
-all: $(ZLIB_LIB) example.exe minigzip.exe
-
-.c.obj:
- $(CC) -c $(CFLAGS) $*.c
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
-
-minigzip.obj: minigzip.c zlib.h zconf.h
-
-
-# the command line is cut to fit in the MS-DOS 128 byte limit:
-$(ZLIB_LIB): $(OBJ1) $(OBJ2)
- -del $(ZLIB_LIB)
- $(AR) $(ZLIB_LIB) $(OBJP1)
- $(AR) $(ZLIB_LIB) $(OBJP2)
-
-example.exe: example.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
-
-minigzip.exe: minigzip.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
-
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-clean:
- -del *.obj
- -del *.lib
- -del *.exe
- -del zlib_*.bak
- -del foo.gz
+++ /dev/null
-# Project: zlib_1_03
-# Patched for zlib 1.1.2 rw@shadow.org.uk 19980430
-# test works out-of-the-box, installs `somewhere' on demand
-
-# Toolflags:
-CCflags = -c -depend !Depend -IC: -g -throwback -DRISCOS -fah
-C++flags = -c -depend !Depend -IC: -throwback
-Linkflags = -aif -c++ -o $@
-ObjAsmflags = -throwback -NoCache -depend !Depend
-CMHGflags =
-LibFileflags = -c -l -o $@
-Squeezeflags = -o $@
-
-# change the line below to where _you_ want the library installed.
-libdest = lib:zlib
-
-# Final targets:
-@.lib: @.o.adler32 @.o.compress @.o.crc32 @.o.deflate @.o.gzio \
- @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil @.o.trees \
- @.o.uncompr @.o.zutil
- LibFile $(LibFileflags) @.o.adler32 @.o.compress @.o.crc32 @.o.deflate \
- @.o.gzio @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil \
- @.o.trees @.o.uncompr @.o.zutil
-test: @.minigzip @.example @.lib
- @copy @.lib @.libc A~C~DF~L~N~P~Q~RS~TV
- @echo running tests: hang on.
- @/@.minigzip -f -9 libc
- @/@.minigzip -d libc-gz
- @/@.minigzip -f -1 libc
- @/@.minigzip -d libc-gz
- @/@.minigzip -h -9 libc
- @/@.minigzip -d libc-gz
- @/@.minigzip -h -1 libc
- @/@.minigzip -d libc-gz
- @/@.minigzip -9 libc
- @/@.minigzip -d libc-gz
- @/@.minigzip -1 libc
- @/@.minigzip -d libc-gz
- @diff @.lib @.libc
- @echo that should have reported '@.lib and @.libc identical' if you have diff.
- @/@.example @.fred @.fred
- @echo that will have given lots of hello!'s.
-
-@.minigzip: @.o.minigzip @.lib C:o.Stubs
- Link $(Linkflags) @.o.minigzip @.lib C:o.Stubs
-@.example: @.o.example @.lib C:o.Stubs
- Link $(Linkflags) @.o.example @.lib C:o.Stubs
-
-install: @.lib
- cdir $(libdest)
- cdir $(libdest).h
- @copy @.h.zlib $(libdest).h.zlib A~C~DF~L~N~P~Q~RS~TV
- @copy @.h.zconf $(libdest).h.zconf A~C~DF~L~N~P~Q~RS~TV
- @copy @.lib $(libdest).lib A~C~DF~L~N~P~Q~RS~TV
- @echo okay, installed zlib in $(libdest)
-
-clean:; remove @.minigzip
- remove @.example
- remove @.libc
- -wipe @.o.* F~r~cV
- remove @.fred
-
-# User-editable dependencies:
-.c.o:
- cc $(ccflags) -o $@ $<
-
-# Static dependencies:
-
-# Dynamic dependencies:
-o.example: c.example
-o.example: h.zlib
-o.example: h.zconf
-o.minigzip: c.minigzip
-o.minigzip: h.zlib
-o.minigzip: h.zconf
-o.adler32: c.adler32
-o.adler32: h.zlib
-o.adler32: h.zconf
-o.compress: c.compress
-o.compress: h.zlib
-o.compress: h.zconf
-o.crc32: c.crc32
-o.crc32: h.zlib
-o.crc32: h.zconf
-o.deflate: c.deflate
-o.deflate: h.deflate
-o.deflate: h.zutil
-o.deflate: h.zlib
-o.deflate: h.zconf
-o.gzio: c.gzio
-o.gzio: h.zutil
-o.gzio: h.zlib
-o.gzio: h.zconf
-o.infblock: c.infblock
-o.infblock: h.zutil
-o.infblock: h.zlib
-o.infblock: h.zconf
-o.infblock: h.infblock
-o.infblock: h.inftrees
-o.infblock: h.infcodes
-o.infblock: h.infutil
-o.infcodes: c.infcodes
-o.infcodes: h.zutil
-o.infcodes: h.zlib
-o.infcodes: h.zconf
-o.infcodes: h.inftrees
-o.infcodes: h.infblock
-o.infcodes: h.infcodes
-o.infcodes: h.infutil
-o.infcodes: h.inffast
-o.inffast: c.inffast
-o.inffast: h.zutil
-o.inffast: h.zlib
-o.inffast: h.zconf
-o.inffast: h.inftrees
-o.inffast: h.infblock
-o.inffast: h.infcodes
-o.inffast: h.infutil
-o.inffast: h.inffast
-o.inflate: c.inflate
-o.inflate: h.zutil
-o.inflate: h.zlib
-o.inflate: h.zconf
-o.inflate: h.infblock
-o.inftrees: c.inftrees
-o.inftrees: h.zutil
-o.inftrees: h.zlib
-o.inftrees: h.zconf
-o.inftrees: h.inftrees
-o.inftrees: h.inffixed
-o.infutil: c.infutil
-o.infutil: h.zutil
-o.infutil: h.zlib
-o.infutil: h.zconf
-o.infutil: h.infblock
-o.infutil: h.inftrees
-o.infutil: h.infcodes
-o.infutil: h.infutil
-o.trees: c.trees
-o.trees: h.deflate
-o.trees: h.zutil
-o.trees: h.zlib
-o.trees: h.zconf
-o.trees: h.trees
-o.uncompr: c.uncompr
-o.uncompr: h.zlib
-o.uncompr: h.zconf
-o.zutil: c.zutil
-o.zutil: h.zutil
-o.zutil: h.zlib
-o.zutil: h.zconf
+++ /dev/null
-This directory contains files that have not been updated for zlib 1.2.x
-
-(Volunteers are encouraged to help clean this up. Thanks.)
+++ /dev/null
-# descrip.mms: MMS description file for building zlib on VMS
-# written by Martin P.J. Zinser <m.zinser@gsi.de>
-
-cc_defs =
-c_deb =
-
-.ifdef __DECC__
-pref = /prefix=all
-.endif
-
-OBJS = adler32.obj, compress.obj, crc32.obj, gzio.obj, uncompr.obj,\
- deflate.obj, trees.obj, zutil.obj, inflate.obj, infblock.obj,\
- inftrees.obj, infcodes.obj, infutil.obj, inffast.obj
-
-CFLAGS= $(C_DEB) $(CC_DEFS) $(PREF)
-
-all : example.exe minigzip.exe
- @ write sys$output " Example applications available"
-libz.olb : libz.olb($(OBJS))
- @ write sys$output " libz available"
-
-example.exe : example.obj libz.olb
- link example,libz.olb/lib
-
-minigzip.exe : minigzip.obj libz.olb
- link minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib
-
-clean :
- delete *.obj;*,libz.olb;*
-
-
-# Other dependencies.
-adler32.obj : zutil.h zlib.h zconf.h
-compress.obj : zlib.h zconf.h
-crc32.obj : zutil.h zlib.h zconf.h
-deflate.obj : deflate.h zutil.h zlib.h zconf.h
-example.obj : zlib.h zconf.h
-gzio.obj : zutil.h zlib.h zconf.h
-infblock.obj : zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h
-infcodes.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h infcodes.h inffast.h
-inffast.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h inffast.h
-inflate.obj : zutil.h zlib.h zconf.h infblock.h
-inftrees.obj : zutil.h zlib.h zconf.h inftrees.h
-infutil.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h
-minigzip.obj : zlib.h zconf.h
-trees.obj : deflate.h zutil.h zlib.h zconf.h
-uncompr.obj : zlib.h zconf.h
-zutil.obj : zutil.h zlib.h zconf.h
+++ /dev/null
-# Makefile for zlib under OS/2 using GCC (PGCC)
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile and test, type:
-# cp Makefile.os2 ..
-# cd ..
-# make -f Makefile.os2 test
-
-# This makefile will build a static library z.lib, a shared library
-# z.dll and a import library zdll.lib. You can use either z.lib or
-# zdll.lib by specifying either -lz or -lzdll on gcc's command line
-
-CC=gcc -Zomf -s
-
-CFLAGS=-O6 -Wall
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-g -DDEBUG
-#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-# -Wstrict-prototypes -Wmissing-prototypes
-
-#################### BUG WARNING: #####################
-## infcodes.c hits a bug in pgcc-1.0, so you have to use either
-## -O# where # <= 4 or one of (-fno-ommit-frame-pointer or -fno-force-mem)
-## This bug is reportedly fixed in pgcc >1.0, but this was not tested
-CFLAGS+=-fno-force-mem
-
-LDFLAGS=-s -L. -lzdll -Zcrtdll
-LDSHARED=$(CC) -s -Zomf -Zdll -Zcrtdll
-
-VER=1.1.0
-ZLIB=z.lib
-SHAREDLIB=z.dll
-SHAREDLIBIMP=zdll.lib
-LIBS=$(ZLIB) $(SHAREDLIB) $(SHAREDLIBIMP)
-
-AR=emxomfar cr
-IMPLIB=emximp
-RANLIB=echo
-TAR=tar
-SHELL=bash
-
-prefix=/usr/local
-exec_prefix = $(prefix)
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infblock.o inftrees.o infcodes.o infutil.o inffast.o
-
-TEST_OBJS = example.o minigzip.o
-
-DISTFILES = README INDEX ChangeLog configure Make*[a-z0-9] *.[ch] descrip.mms \
- algorithm.txt zlib.3 msdos/Make*[a-z0-9] msdos/zlib.def msdos/zlib.rc \
- nt/Makefile.nt nt/zlib.dnt contrib/README.contrib contrib/*.txt \
- contrib/asm386/*.asm contrib/asm386/*.c \
- contrib/asm386/*.bat contrib/asm386/zlibvc.d?? contrib/iostream/*.cpp \
- contrib/iostream/*.h contrib/iostream2/*.h contrib/iostream2/*.cpp \
- contrib/untgz/Makefile contrib/untgz/*.c contrib/untgz/*.w32
-
-all: example.exe minigzip.exe
-
-test: all
- @LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
- echo hello world | ./minigzip | ./minigzip -d || \
- echo ' *** minigzip test FAILED ***' ; \
- if ./example; then \
- echo ' *** zlib test OK ***'; \
- else \
- echo ' *** zlib test FAILED ***'; \
- fi
-
-$(ZLIB): $(OBJS)
- $(AR) $@ $(OBJS)
- -@ ($(RANLIB) $@ || true) >/dev/null 2>&1
-
-$(SHAREDLIB): $(OBJS) os2/z.def
- $(LDSHARED) -o $@ $^
-
-$(SHAREDLIBIMP): os2/z.def
- $(IMPLIB) -o $@ $^
-
-example.exe: example.o $(LIBS)
- $(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
-
-minigzip.exe: minigzip.o $(LIBS)
- $(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
-
-clean:
- rm -f *.o *~ example minigzip libz.a libz.so* foo.gz
-
-distclean: clean
-
-zip:
- mv Makefile Makefile~; cp -p Makefile.in Makefile
- rm -f test.c ztest*.c
- v=`sed -n -e 's/\.//g' -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
- zip -ul9 zlib$$v $(DISTFILES)
- mv Makefile~ Makefile
-
-dist:
- mv Makefile Makefile~; cp -p Makefile.in Makefile
- rm -f test.c ztest*.c
- d=zlib-`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
- rm -f $$d.tar.gz; \
- if test ! -d ../$$d; then rm -f ../$$d; ln -s `pwd` ../$$d; fi; \
- files=""; \
- for f in $(DISTFILES); do files="$$files $$d/$$f"; done; \
- cd ..; \
- GZIP=-9 $(TAR) chofz $$d/$$d.tar.gz $$files; \
- if test ! -d $$d; then rm -f $$d; fi
- mv Makefile~ Makefile
-
-tags:
- etags *.[ch]
-
-depend:
- makedepend -- $(CFLAGS) -- *.[ch]
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-infblock.o: infblock.h inftrees.h infcodes.h infutil.h zutil.h zlib.h zconf.h
-infcodes.o: zutil.h zlib.h zconf.h
-infcodes.o: inftrees.h infblock.h infcodes.h infutil.h inffast.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h
-inffast.o: infblock.h infcodes.h infutil.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h infblock.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-infutil.o: zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h
-minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h
+++ /dev/null
-;
-; Slightly modified version of ../nt/zlib.dnt :-)
-;
-
-LIBRARY Z
-DESCRIPTION "Zlib compression library for OS/2"
-CODE PRELOAD MOVEABLE DISCARDABLE
-DATA PRELOAD MOVEABLE MULTIPLE
-
-EXPORTS
- adler32
- compress
- crc32
- deflate
- deflateCopy
- deflateEnd
- deflateInit2_
- deflateInit_
- deflateParams
- deflateReset
- deflateSetDictionary
- gzclose
- gzdopen
- gzerror
- gzflush
- gzopen
- gzread
- gzwrite
- inflate
- inflateEnd
- inflateInit2_
- inflateInit_
- inflateReset
- inflateSetDictionary
- inflateSync
- uncompress
- zlibVersion
- gzprintf
- gzputc
- gzgetc
- gzseek
- gzrewind
- gztell
- gzeof
- gzsetparams
- zError
- inflateSyncPoint
- get_crc_table
- compress2
- gzputs
- gzgets
+++ /dev/null
-See below some functions declarations for Visual Basic.
-
-Frequently Asked Question:
-
-Q: Each time I use the compress function I get the -5 error (not enough
- room in the output buffer).
-
-A: Make sure that the length of the compressed buffer is passed by
- reference ("as any"), not by value ("as long"). Also check that
- before the call of compress this length is equal to the total size of
- the compressed buffer and not zero.
-
-
-From: "Jon Caruana" <jon-net@usa.net>
-Subject: Re: How to port zlib declares to vb?
-Date: Mon, 28 Oct 1996 18:33:03 -0600
-
-Got the answer! (I haven't had time to check this but it's what I got, and
-looks correct):
-
-He has the following routines working:
- compress
- uncompress
- gzopen
- gzwrite
- gzread
- gzclose
-
-Declares follow: (Quoted from Carlos Rios <c_rios@sonda.cl>, in Vb4 form)
-
-#If Win16 Then 'Use Win16 calls.
-Declare Function compress Lib "ZLIB.DLL" (ByVal compr As
- String, comprLen As Any, ByVal buf As String, ByVal buflen
- As Long) As Integer
-Declare Function uncompress Lib "ZLIB.DLL" (ByVal uncompr
- As String, uncomprLen As Any, ByVal compr As String, ByVal
- lcompr As Long) As Integer
-Declare Function gzopen Lib "ZLIB.DLL" (ByVal filePath As
- String, ByVal mode As String) As Long
-Declare Function gzread Lib "ZLIB.DLL" (ByVal file As
- Long, ByVal uncompr As String, ByVal uncomprLen As Integer)
- As Integer
-Declare Function gzwrite Lib "ZLIB.DLL" (ByVal file As
- Long, ByVal uncompr As String, ByVal uncomprLen As Integer)
- As Integer
-Declare Function gzclose Lib "ZLIB.DLL" (ByVal file As
- Long) As Integer
-#Else
-Declare Function compress Lib "ZLIB32.DLL"
- (ByVal compr As String, comprLen As Any, ByVal buf As
- String, ByVal buflen As Long) As Integer
-Declare Function uncompress Lib "ZLIB32.DLL"
- (ByVal uncompr As String, uncomprLen As Any, ByVal compr As
- String, ByVal lcompr As Long) As Long
-Declare Function gzopen Lib "ZLIB32.DLL"
- (ByVal file As String, ByVal mode As String) As Long
-Declare Function gzread Lib "ZLIB32.DLL"
- (ByVal file As Long, ByVal uncompr As String, ByVal
- uncomprLen As Long) As Long
-Declare Function gzwrite Lib "ZLIB32.DLL"
- (ByVal file As Long, ByVal uncompr As String, ByVal
- uncomprLen As Long) As Long
-Declare Function gzclose Lib "ZLIB32.DLL"
- (ByVal file As Long) As Long
-#End If
-
--Jon Caruana
-jon-net@usa.net
-Microsoft Sitebuilder Network Level 1 Member - HTML Writer's Guild Member
-
-
-Here is another example from Michael <michael_borgsys@hotmail.com> that he
-says conforms to the VB guidelines, and that solves the problem of not
-knowing the uncompressed size by storing it at the end of the file:
-
-'Calling the functions:
-'bracket meaning: <parameter> [optional] {Range of possible values}
-'Call subCompressFile(<path with filename to compress> [, <path with
-filename to write to>, [level of compression {1..9}]])
-'Call subUncompressFile(<path with filename to compress>)
-
-Option Explicit
-Private lngpvtPcnSml As Long 'Stores value for 'lngPercentSmaller'
-Private Const SUCCESS As Long = 0
-Private Const strFilExt As String = ".cpr"
-Private Declare Function lngfncCpr Lib "zlib.dll" Alias "compress2" (ByRef
-dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long,
-ByVal level As Integer) As Long
-Private Declare Function lngfncUcp Lib "zlib.dll" Alias "uncompress" (ByRef
-dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long)
-As Long
-
-Public Sub subCompressFile(ByVal strargOriFilPth As String, Optional ByVal
-strargCprFilPth As String, Optional ByVal intLvl As Integer = 9)
- Dim strCprPth As String
- Dim lngOriSiz As Long
- Dim lngCprSiz As Long
- Dim bytaryOri() As Byte
- Dim bytaryCpr() As Byte
- lngOriSiz = FileLen(strargOriFilPth)
- ReDim bytaryOri(lngOriSiz - 1)
- Open strargOriFilPth For Binary Access Read As #1
- Get #1, , bytaryOri()
- Close #1
- strCprPth = IIf(strargCprFilPth = "", strargOriFilPth, strargCprFilPth)
-'Select file path and name
- strCprPth = strCprPth & IIf(Right(strCprPth, Len(strFilExt)) =
-strFilExt, "", strFilExt) 'Add file extension if not exists
- lngCprSiz = (lngOriSiz * 1.01) + 12 'Compression needs temporary a bit
-more space then original file size
- ReDim bytaryCpr(lngCprSiz - 1)
- If lngfncCpr(bytaryCpr(0), lngCprSiz, bytaryOri(0), lngOriSiz, intLvl) =
-SUCCESS Then
- lngpvtPcnSml = (1# - (lngCprSiz / lngOriSiz)) * 100
- ReDim Preserve bytaryCpr(lngCprSiz - 1)
- Open strCprPth For Binary Access Write As #1
- Put #1, , bytaryCpr()
- Put #1, , lngOriSiz 'Add the the original size value to the end
-(last 4 bytes)
- Close #1
- Else
- MsgBox "Compression error"
- End If
- Erase bytaryCpr
- Erase bytaryOri
-End Sub
-
-Public Sub subUncompressFile(ByVal strargFilPth As String)
- Dim bytaryCpr() As Byte
- Dim bytaryOri() As Byte
- Dim lngOriSiz As Long
- Dim lngCprSiz As Long
- Dim strOriPth As String
- lngCprSiz = FileLen(strargFilPth)
- ReDim bytaryCpr(lngCprSiz - 1)
- Open strargFilPth For Binary Access Read As #1
- Get #1, , bytaryCpr()
- Close #1
- 'Read the original file size value:
- lngOriSiz = bytaryCpr(lngCprSiz - 1) * (2 ^ 24) _
- + bytaryCpr(lngCprSiz - 2) * (2 ^ 16) _
- + bytaryCpr(lngCprSiz - 3) * (2 ^ 8) _
- + bytaryCpr(lngCprSiz - 4)
- ReDim Preserve bytaryCpr(lngCprSiz - 5) 'Cut of the original size value
- ReDim bytaryOri(lngOriSiz - 1)
- If lngfncUcp(bytaryOri(0), lngOriSiz, bytaryCpr(0), lngCprSiz) = SUCCESS
-Then
- strOriPth = Left(strargFilPth, Len(strargFilPth) - Len(strFilExt))
- Open strOriPth For Binary Access Write As #1
- Put #1, , bytaryOri()
- Close #1
- Else
- MsgBox "Uncompression error"
- End If
- Erase bytaryCpr
- Erase bytaryOri
-End Sub
-Public Property Get lngPercentSmaller() As Long
- lngPercentSmaller = lngpvtPcnSml
-End Property
+++ /dev/null
-<html>
-<head>
- <title>
- zlib general purpose compression library version 1.1.4
- </title>
-</head>
-<body bgcolor="White" text="Black" vlink="Red" alink="Navy" link="Red">
-<!-- background="zlibbg.gif" -->
-
-<h1> zlib 1.1.4 Manual </h1>
-<hr>
-<a name="Contents"><h2>Contents</h2>
-<ol type="I">
-<li> <a href="#Prologue">Prologue</a>
-<li> <a href="#Introduction">Introduction</a>
-<li> <a href="#Utility functions">Utility functions</a>
-<li> <a href="#Basic functions">Basic functions</a>
-<li> <a href="#Advanced functions">Advanced functions</a>
-<li> <a href="#Constants">Constants</a>
-<li> <a href="#struct z_stream_s">struct z_stream_s</a>
-<li> <a href="#Checksum functions">Checksum functions</a>
-<li> <a href="#Misc">Misc</a>
-</ol>
-<hr>
-<a name="Prologue"><h2> Prologue </h2>
- 'zlib' general purpose compression library version 1.1.4, March 11th, 2002
- <p>
- Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler
- <p>
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
- <p>
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
- <ol>
- <li> The origin of this software must not be misrepresented ; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- <li> Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- <li> This notice may not be removed or altered from any source distribution.
- </ol>
-
- <dl>
- <dt>Jean-loup Gailly
- <dd><a href="mailto:jloup@gzip.org">jloup@gzip.org</a>
- <dt>Mark Adler
- <dd><a href="mailto:madler@alumni.caltech.edu">madler@alumni.caltech.edu</a>
- </dl>
-
- The data format used by the zlib library is described by RFCs (Request for
- Comments) 1950 to 1952 in the files
- <a href="ftp://ds.internic.net/rfc/rfc1950.txt">
- ftp://ds.internic.net/rfc/rfc1950.txt </a>
- (zlib format),
- <a href="ftp://ds.internic.net/rfc/rfc1951.txt">
- rfc1951.txt </a>
- (<a href="#deflate">deflate</a> format) and
- <a href="ftp://ds.internic.net/rfc/rfc1952.txt">
- rfc1952.txt </a>
- (gzip format).
- <p>
- This manual is converted from zlib.h by
- <a href="mailto:piaip@csie.ntu.edu.tw"> piaip </a>
- <p>
- Visit <a href="http://ftp.cdrom.com/pub/infozip/zlib/">
- http://ftp.cdrom.com/pub/infozip/zlib/</a>
- for the official zlib web page.
- <p>
-
-<hr>
-<a name="Introduction"><h2> Introduction </h2>
- The 'zlib' compression library provides in-memory compression and
- decompression functions, including integrity checks of the uncompressed
- data. This version of the library supports only one compression method
- (deflation) but other algorithms will be added later and will have the same
- stream interface.
- <p>
-
- Compression can be done in a single step if the buffers are large
- enough (for example if an input file is mmap'ed), or can be done by
- repeated calls of the compression function. In the latter case, the
- application must provide more input and/or consume the output
- (providing more output space) before each call.
- <p>
-
- The library also supports reading and writing files in gzip (.gz) format
- with an interface similar to that of stdio.
- <p>
-
- The library does not install any signal handler. The decoder checks
- the consistency of the compressed data, so the library should never
- crash even in case of corrupted input.
- <p>
-
-<hr>
-<a name="Utility functions"><h2> Utility functions </h2>
- The following utility functions are implemented on top of the
- <a href="#Basic functions">basic stream-oriented functions</a>.
- To simplify the interface, some
- default options are assumed (compression level and memory usage,
- standard memory allocation functions). The source code of these
- utility functions can easily be modified if you need special options.
-<h3> Function list </h3>
-<ul>
-<li> int <a href="#compress">compress</a> (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen);
-<li> int <a href="#compress2">compress2</a> (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen, int level);
-<li> int <a href="#uncompress">uncompress</a> (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen);
-<li> typedef voidp gzFile;
-<li> gzFile <a href="#gzopen">gzopen</a> (const char *path, const char *mode);
-<li> gzFile <a href="#gzdopen">gzdopen</a> (int fd, const char *mode);
-<li> int <a href="#gzsetparams">gzsetparams</a> (gzFile file, int level, int strategy);
-<li> int <a href="#gzread">gzread</a> (gzFile file, voidp buf, unsigned len);
-<li> int <a href="#gzwrite">gzwrite</a> (gzFile file, const voidp buf, unsigned len);
-<li> int VA <a href="#gzprintf">gzprintf</a> (gzFile file, const char *format, ...);
-<li> int <a href="#gzputs">gzputs</a> (gzFile file, const char *s);
-<li> char * <a href="#gzgets">gzgets</a> (gzFile file, char *buf, int len);
-<li> int <a href="#gzputc">gzputc</a> (gzFile file, int c);
-<li> int <a href="#gzgetc">gzgetc</a> (gzFile file);
-<li> int <a href="#gzflush">gzflush</a> (gzFile file, int flush);
-<li> z_off_t <a href="#gzseek">gzseek</a> (gzFile file, z_off_t offset, int whence);
-<li> z_off_t <a href="#gztell">gztell</a> (gzFile file);
-<li> int <a href="#gzrewind">gzrewind</a> (gzFile file);
-<li> int <a href="#gzeof">gzeof</a> (gzFile file);
-<li> int <a href="#gzclose">gzclose</a> (gzFile file);
-<li> const char * <a href="#gzerror">gzerror</a> (gzFile file, int *errnum);
-</ul>
-<h3> Function description </h3>
-<dl>
-<font color="Blue"><dt> int <a name="compress">compress</a> (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen);</font>
-<dd>
- Compresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total
- size of the destination buffer, which must be at least 0.1% larger than
- sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the
- compressed buffer.<p>
- This function can be used to <a href="#compress">compress</a> a whole file at once if the
- input file is mmap'ed.<p>
- <a href="#compress">compress</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not
- enough memory, <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a> if there was not enough room in the output
- buffer.<p>
-
-<font color="Blue"><dt> int <a name="compress2">compress2</a> (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen, int level);</font>
-<dd>
- Compresses the source buffer into the destination buffer. The level
- parameter has the same meaning as in <a href="#deflateInit">deflateInit</a>. sourceLen is the byte
- length of the source buffer. Upon entry, destLen is the total size of the
- destination buffer, which must be at least 0.1% larger than sourceLen plus
- 12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
- <p>
-
- <a href="#compress2">compress2</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not enough
- memory, <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a> if there was not enough room in the output buffer,
- <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the level parameter is invalid.
- <p>
-
-<font color="Blue"><dt> int <a name="uncompress">uncompress</a> (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen);</font>
-<dd>
- Decompresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total
- size of the destination buffer, which must be large enough to hold the
- entire uncompressed data. (The size of the uncompressed data must have
- been saved previously by the compressor and transmitted to the decompressor
- by some mechanism outside the scope of this compression library.)
- Upon exit, destLen is the actual size of the compressed buffer. <p>
- This function can be used to decompress a whole file at once if the
- input file is mmap'ed.
- <p>
-
- <a href="#uncompress">uncompress</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not
- enough memory, <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a> if there was not enough room in the output
- buffer, or <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a> if the input data was corrupted.
- <p>
-
-<dt> typedef voidp gzFile;
-<dd> <p>
-
-<font color="Blue"><dt> gzFile <a name="gzopen">gzopen</a> (const char *path, const char *mode);</font>
-<dd>
- Opens a gzip (.gz) file for reading or writing. The mode parameter
- is as in fopen ("rb" or "wb") but can also include a compression level
- ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
- Huffman only compression as in "wb1h". (See the description
- of <a href="#deflateInit2">deflateInit2</a> for more information about the strategy parameter.)
- <p>
-
- <a href="#gzopen">gzopen</a> can be used to read a file which is not in gzip format ; in this
- case <a href="#gzread">gzread</a> will directly read from the file without decompression.
- <p>
-
- <a href="#gzopen">gzopen</a> returns NULL if the file could not be opened or if there was
- insufficient memory to allocate the (de)compression <a href="#state">state</a> ; errno
- can be checked to distinguish the two cases (if errno is zero, the
- zlib error is <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a>).
- <p>
-
-<font color="Blue"><dt> gzFile <a name="gzdopen">gzdopen</a> (int fd, const char *mode);</font>
-<dd>
- <a href="#gzdopen">gzdopen</a>() associates a gzFile with the file descriptor fd. File
- descriptors are obtained from calls like open, dup, creat, pipe or
- fileno (in the file has been previously opened with fopen).
- The mode parameter is as in <a href="#gzopen">gzopen</a>.
- <p>
- The next call of <a href="#gzclose">gzclose</a> on the returned gzFile will also close the
- file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
- descriptor fd. If you want to keep fd open, use <a href="#gzdopen">gzdopen</a>(dup(fd), mode).
- <p>
- <a href="#gzdopen">gzdopen</a> returns NULL if there was insufficient memory to allocate
- the (de)compression <a href="#state">state</a>.
- <p>
-
-<font color="Blue"><dt> int <a name="gzsetparams">gzsetparams</a> (gzFile file, int level, int strategy);</font>
-<dd>
- Dynamically update the compression level or strategy. See the description
- of <a href="#deflateInit2">deflateInit2</a> for the meaning of these parameters.
- <p>
- <a href="#gzsetparams">gzsetparams</a> returns <a href="#Z_OK">Z_OK</a> if success, or <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the file was not
- opened for writing.
- <p>
-
-<font color="Blue"><dt> int <a name="gzread">gzread</a> (gzFile file, voidp buf, unsigned len);</font>
-<dd>
- Reads the given number of uncompressed bytes from the compressed file.
- If the input file was not in gzip format, <a href="#gzread">gzread</a> copies the given number
- of bytes into the buffer.
- <p>
- <a href="#gzread">gzread</a> returns the number of uncompressed bytes actually read (0 for
- end of file, -1 for error).
- <p>
-
-<font color="Blue"><dt> int <a name="gzwrite">gzwrite</a> (gzFile file, const voidp buf, unsigned len);</font>
-<dd>
- Writes the given number of uncompressed bytes into the compressed file.
- <a href="#gzwrite">gzwrite</a> returns the number of uncompressed bytes actually written
- (0 in case of error).
- <p>
-
-<font color="Blue"><dt> int VA <a name="gzprintf">gzprintf</a> (gzFile file, const char *format, ...);</font>
-<dd>
- Converts, formats, and writes the args to the compressed file under
- control of the format string, as in fprintf. <a href="#gzprintf">gzprintf</a> returns the number of
- uncompressed bytes actually written (0 in case of error).
- <p>
-
-<font color="Blue"><dt> int <a name="gzputs">gzputs</a> (gzFile file, const char *s);</font>
-<dd>
- Writes the given null-terminated string to the compressed file, excluding
- the terminating null character.
- <p>
- <a href="#gzputs">gzputs</a> returns the number of characters written, or -1 in case of error.
- <p>
-
-<font color="Blue"><dt> char * <a name="gzgets">gzgets</a> (gzFile file, char *buf, int len);</font>
-<dd>
- Reads bytes from the compressed file until len-1 characters are read, or
- a newline character is read and transferred to buf, or an end-of-file
- condition is encountered. The string is then terminated with a null
- character.
- <p>
- <a href="#gzgets">gzgets</a> returns buf, or <a href="#Z_NULL">Z_NULL</a> in case of error.
- <p>
-
-<font color="Blue"><dt> int <a name="gzputc">gzputc</a> (gzFile file, int c);</font>
-<dd>
- Writes c, converted to an unsigned char, into the compressed file.
- <a href="#gzputc">gzputc</a> returns the value that was written, or -1 in case of error.
- <p>
-
-<font color="Blue"><dt> int <a name="gzgetc">gzgetc</a> (gzFile file);</font>
-<dd>
- Reads one byte from the compressed file. <a href="#gzgetc">gzgetc</a> returns this byte
- or -1 in case of end of file or error.
- <p>
-
-<font color="Blue"><dt> int <a name="gzflush">gzflush</a> (gzFile file, int flush);</font>
-<dd>
- Flushes all pending output into the compressed file. The parameter
- flush is as in the <a href="#deflate">deflate</a>() function. The return value is the zlib
- error number (see function <a href="#gzerror">gzerror</a> below). <a href="#gzflush">gzflush</a> returns <a href="#Z_OK">Z_OK</a> if
- the flush parameter is <a href="#Z_FINISH">Z_FINISH</a> and all output could be flushed.
- <p>
- <a href="#gzflush">gzflush</a> should be called only when strictly necessary because it can
- degrade compression.
- <p>
-
-<font color="Blue"><dt> z_off_t <a name="gzseek">gzseek</a> (gzFile file, z_off_t offset, int whence);</font>
-<dd>
- Sets the starting position for the next <a href="#gzread">gzread</a> or <a href="#gzwrite">gzwrite</a> on the
- given compressed file. The offset represents a number of bytes in the
- uncompressed data stream. The whence parameter is defined as in lseek(2);
- the value SEEK_END is not supported.
- <p>
- If the file is opened for reading, this function is emulated but can be
- extremely slow. If the file is opened for writing, only forward seeks are
- supported ; <a href="#gzseek">gzseek</a> then compresses a sequence of zeroes up to the new
- starting position.
- <p>
- <a href="#gzseek">gzseek</a> returns the resulting offset location as measured in bytes from
- the beginning of the uncompressed stream, or -1 in case of error, in
- particular if the file is opened for writing and the new starting position
- would be before the current position.
- <p>
-
-<font color="Blue"><dt> int <a name="gzrewind">gzrewind</a> (gzFile file);</font>
-<dd>
- Rewinds the given file. This function is supported only for reading.
- <p>
- <a href="#gzrewind">gzrewind</a>(file) is equivalent to (int)<a href="#gzseek">gzseek</a>(file, 0L, SEEK_SET)
- <p>
-
-<font color="Blue"><dt> z_off_t <a name="gztell">gztell</a> (gzFile file);</font>
-<dd>
- Returns the starting position for the next <a href="#gzread">gzread</a> or <a href="#gzwrite">gzwrite</a> on the
- given compressed file. This position represents a number of bytes in the
- uncompressed data stream.
- <p>
-
- <a href="#gztell">gztell</a>(file) is equivalent to <a href="#gzseek">gzseek</a>(file, 0L, SEEK_CUR)
- <p>
-
-<font color="Blue"><dt> int <a name="gzeof">gzeof</a> (gzFile file);</font>
-<dd>
- Returns 1 when EOF has previously been detected reading the given
- input stream, otherwise zero.
- <p>
-
-<font color="Blue"><dt> int <a name="gzclose">gzclose</a> (gzFile file);</font>
-<dd>
- Flushes all pending output if necessary, closes the compressed file
- and deallocates all the (de)compression <a href="#state">state</a>. The return value is the zlib
- error number (see function <a href="#gzerror">gzerror</a> below).
- <p>
-
-<font color="Blue"><dt> const char * <a name="gzerror">gzerror</a> (gzFile file, int *errnum);</font>
-<dd>
- Returns the error message for the last error which occurred on the
- given compressed file. errnum is set to zlib error number. If an
- error occurred in the file system and not in the compression library,
- errnum is set to <a href="#Z_ERRNO">Z_ERRNO</a> and the application may consult errno
- to get the exact error code.
- <p>
-</dl>
-<hr>
-<a name="Basic functions"><h2> Basic functions </h2>
-<h3> Function list </h3>
-<ul>
-<li> const char * <a href="#zlibVersion">zlibVersion</a> (void);
-<li> int <a href="#deflateInit">deflateInit</a> (<a href="#z_streamp">z_streamp</a> strm, int level);
-<li> int <a href="#deflate">deflate</a> (<a href="#z_streamp">z_streamp</a> strm, int flush);
-<li> int <a href="#deflateEnd">deflateEnd</a> (<a href="#z_streamp">z_streamp</a> strm);
-<li> int <a href="#inflateInit">inflateInit</a> (<a href="#z_streamp">z_streamp</a> strm);
-<li> int <a href="#inflate">inflate</a> (<a href="#z_streamp">z_streamp</a> strm, int flush);
-<li> int <a href="#inflateEnd">inflateEnd</a> (<a href="#z_streamp">z_streamp</a> strm);
-</ul>
-
-<h3> Function description </h3>
-<dl>
-<font color="Blue"><dt> const char * <a name="zlibVersion">zlibVersion</a> (void);</font>
-<dd> The application can compare <a href="#zlibVersion">zlibVersion</a> and ZLIB_VERSION for consistency.
- If the first character differs, the library code actually used is
- not compatible with the zlib.h header file used by the application.
- This check is automatically made by <a href="#deflateInit">deflateInit</a> and <a href="#inflateInit">inflateInit</a>.
- <p>
-
-<font color="Blue"><dt> int <a name="deflateInit">deflateInit</a> (<a href="#z_streamp">z_streamp</a> strm, int level);</font>
-<dd>
- Initializes the internal stream <a href="#state">state</a> for compression. The fields
- <a href="#zalloc">zalloc</a>, <a href="#zfree">zfree</a> and <a href="#opaque">opaque</a> must be initialized before by the caller.
- If <a href="#zalloc">zalloc</a> and <a href="#zfree">zfree</a> are set to <a href="#Z_NULL">Z_NULL</a>, <a href="#deflateInit">deflateInit</a> updates them to
- use default allocation functions.
- <p>
-
- The compression level must be <a href="#Z_DEFAULT_COMPRESSION">Z_DEFAULT_COMPRESSION</a>, or between 0 and 9:
- 1 gives best speed, 9 gives best compression, 0 gives no compression at
- all (the input data is simply copied a block at a time).
- <p>
-
- <a href="#Z_DEFAULT_COMPRESSION">Z_DEFAULT_COMPRESSION</a> requests a default compromise between speed and
- compression (currently equivalent to level 6).
- <p>
-
- <a href="#deflateInit">deflateInit</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not
- enough memory, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if level is not a valid compression level,
- <a href="#Z_VERSION_ERROR">Z_VERSION_ERROR</a> if the zlib library version (<a href="#zlib_version">zlib_version</a>) is incompatible
- with the version assumed by the caller (ZLIB_VERSION).
- <a href="#msg">msg</a> is set to null if there is no error message. <a href="#deflateInit">deflateInit</a> does not
- perform any compression: this will be done by <a href="#deflate">deflate</a>().
- <p>
-
-<font color="Blue"><dt> int <a name="deflate">deflate</a> (<a href="#z_streamp">z_streamp</a> strm, int flush);</font>
-<dd>
- <a href="#deflate">deflate</a> compresses as much data as possible, and stops when the input
- buffer becomes empty or the output buffer becomes full. It may introduce some
- output latency (reading input without producing any output) except when
- forced to flush.<p>
-
- The detailed semantics are as follows. <a href="#deflate">deflate</a> performs one or both of the
- following actions:
-
- <ul>
- <li> Compress more input starting at <a href="#next_in">next_in</a> and update <a href="#next_in">next_in</a> and <a href="#avail_in">avail_in</a>
- accordingly. If not all input can be processed (because there is not
- enough room in the output buffer), <a href="#next_in">next_in</a> and <a href="#avail_in">avail_in</a> are updated and
- processing will resume at this point for the next call of <a href="#deflate">deflate</a>().
-
- <li>
- Provide more output starting at <a href="#next_out">next_out</a> and update <a href="#next_out">next_out</a> and <a href="#avail_out">avail_out</a>
- accordingly. This action is forced if the parameter flush is non zero.
- Forcing flush frequently degrades the compression ratio, so this parameter
- should be set only when necessary (in interactive applications).
- Some output may be provided even if flush is not set.
- </ul> <p>
-
- Before the call of <a href="#deflate">deflate</a>(), the application should ensure that at least
- one of the actions is possible, by providing more input and/or consuming
- more output, and updating <a href="#avail_in">avail_in</a> or <a href="#avail_out">avail_out</a> accordingly ; <a href="#avail_out">avail_out</a>
- should never be zero before the call. The application can consume the
- compressed output when it wants, for example when the output buffer is full
- (<a href="#avail_out">avail_out</a> == 0), or after each call of <a href="#deflate">deflate</a>(). If <a href="#deflate">deflate</a> returns <a href="#Z_OK">Z_OK</a>
- and with zero <a href="#avail_out">avail_out</a>, it must be called again after making room in the
- output buffer because there might be more output pending.
- <p>
-
- If the parameter flush is set to <a href="#Z_SYNC_FLUSH">Z_SYNC_FLUSH</a>, all pending output is
- flushed to the output buffer and the output is aligned on a byte boundary, so
- that the decompressor can get all input data available so far. (In particular
- <a href="#avail_in">avail_in</a> is zero after the call if enough output space has been provided
- before the call.) Flushing may degrade compression for some compression
- algorithms and so it should be used only when necessary.
- <p>
-
- If flush is set to <a href="#Z_FULL_FLUSH">Z_FULL_FLUSH</a>, all output is flushed as with
- <a href="#Z_SYNC_FLUSH">Z_SYNC_FLUSH</a>, and the compression <a href="#state">state</a> is reset so that decompression can
- restart from this point if previous compressed data has been damaged or if
- random access is desired. Using <a href="#Z_FULL_FLUSH">Z_FULL_FLUSH</a> too often can seriously degrade
- the compression.
- <p>
-
- If <a href="#deflate">deflate</a> returns with <a href="#avail_out">avail_out</a> == 0, this function must be called again
- with the same value of the flush parameter and more output space (updated
- <a href="#avail_out">avail_out</a>), until the flush is complete (<a href="#deflate">deflate</a> returns with non-zero
- <a href="#avail_out">avail_out</a>).
- <p>
-
- If the parameter flush is set to <a href="#Z_FINISH">Z_FINISH</a>, pending input is processed,
- pending output is flushed and <a href="#deflate">deflate</a> returns with <a href="#Z_STREAM_END">Z_STREAM_END</a> if there
- was enough output space ; if <a href="#deflate">deflate</a> returns with <a href="#Z_OK">Z_OK</a>, this function must be
- called again with <a href="#Z_FINISH">Z_FINISH</a> and more output space (updated <a href="#avail_out">avail_out</a>) but no
- more input data, until it returns with <a href="#Z_STREAM_END">Z_STREAM_END</a> or an error. After
- <a href="#deflate">deflate</a> has returned <a href="#Z_STREAM_END">Z_STREAM_END</a>, the only possible operations on the
- stream are <a href="#deflateReset">deflateReset</a> or <a href="#deflateEnd">deflateEnd</a>.
- <p>
-
- <a href="#Z_FINISH">Z_FINISH</a> can be used immediately after <a href="#deflateInit">deflateInit</a> if all the compression
- is to be done in a single step. In this case, <a href="#avail_out">avail_out</a> must be at least
- 0.1% larger than <a href="#avail_in">avail_in</a> plus 12 bytes. If <a href="#deflate">deflate</a> does not return
- <a href="#Z_STREAM_END">Z_STREAM_END</a>, then it must be called again as described above.
- <p>
-
- <a href="#deflate">deflate</a>() sets strm-> <a href="#adler">adler</a> to the <a href="#adler32">adler32</a> checksum of all input read
- so far (that is, <a href="#total_in">total_in</a> bytes).
- <p>
-
- <a href="#deflate">deflate</a>() may update <a href="#data_type">data_type</a> if it can make a good guess about
- the input data type (<a href="#Z_ASCII">Z_ASCII</a> or <a href="#Z_BINARY">Z_BINARY</a>). In doubt, the data is considered
- binary. This field is only for information purposes and does not affect
- the compression algorithm in any manner.
- <p>
-
- <a href="#deflate">deflate</a>() returns <a href="#Z_OK">Z_OK</a> if some progress has been made (more input
- processed or more output produced), <a href="#Z_STREAM_END">Z_STREAM_END</a> if all input has been
- consumed and all output has been produced (only when flush is set to
- <a href="#Z_FINISH">Z_FINISH</a>), <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the stream <a href="#state">state</a> was inconsistent (for example
- if <a href="#next_in">next_in</a> or <a href="#next_out">next_out</a> was NULL), <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a> if no progress is possible
- (for example <a href="#avail_in">avail_in</a> or <a href="#avail_out">avail_out</a> was zero).
- <p>
-
-<font color="Blue"><dt> int <a name="deflateEnd">deflateEnd</a> (<a href="#z_streamp">z_streamp</a> strm);</font>
-<dd>
- All dynamically allocated data structures for this stream are freed.
- This function discards any unprocessed input and does not flush any
- pending output.
- <p>
-
- <a href="#deflateEnd">deflateEnd</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the
- stream <a href="#state">state</a> was inconsistent, <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a> if the stream was freed
- prematurely (some input or output was discarded). In the error case,
- <a href="#msg">msg</a> may be set but then points to a static string (which must not be
- deallocated).
- <p>
-
-<font color="Blue"><dt> int <a name="inflateInit">inflateInit</a> (<a href="#z_streamp">z_streamp</a> strm);</font>
-<dd>
- Initializes the internal stream <a href="#state">state</a> for decompression. The fields
- <a href="#next_in">next_in</a>, <a href="#avail_in">avail_in</a>, <a href="#zalloc">zalloc</a>, <a href="#zfree">zfree</a> and <a href="#opaque">opaque</a> must be initialized before by
- the caller. If <a href="#next_in">next_in</a> is not <a href="#Z_NULL">Z_NULL</a> and <a href="#avail_in">avail_in</a> is large enough (the exact
- value depends on the compression method), <a href="#inflateInit">inflateInit</a> determines the
- compression method from the zlib header and allocates all data structures
- accordingly ; otherwise the allocation will be deferred to the first call of
- <a href="#inflate">inflate</a>. If <a href="#zalloc">zalloc</a> and <a href="#zfree">zfree</a> are set to <a href="#Z_NULL">Z_NULL</a>, <a href="#inflateInit">inflateInit</a> updates them to
- use default allocation functions.
- <p>
-
- <a href="#inflateInit">inflateInit</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not enough
- memory, <a href="#Z_VERSION_ERROR">Z_VERSION_ERROR</a> if the zlib library version is incompatible with the
- version assumed by the caller. <a href="#msg">msg</a> is set to null if there is no error
- message. <a href="#inflateInit">inflateInit</a> does not perform any decompression apart from reading
- the zlib header if present: this will be done by <a href="#inflate">inflate</a>(). (So <a href="#next_in">next_in</a> and
- <a href="#avail_in">avail_in</a> may be modified, but <a href="#next_out">next_out</a> and <a href="#avail_out">avail_out</a> are unchanged.)
- <p>
-
-<font color="Blue"><dt> int <a name="inflate">inflate</a> (<a href="#z_streamp">z_streamp</a> strm, int flush);</font>
-<dd>
- <a href="#inflate">inflate</a> decompresses as much data as possible, and stops when the input
- buffer becomes empty or the output buffer becomes full. It may some
- introduce some output latency (reading input without producing any output)
- except when forced to flush.
- <p>
-
- The detailed semantics are as follows. <a href="#inflate">inflate</a> performs one or both of the
- following actions:
-
- <ul>
- <li> Decompress more input starting at <a href="#next_in">next_in</a> and update <a href="#next_in">next_in</a> and <a href="#avail_in">avail_in</a>
- accordingly. If not all input can be processed (because there is not
- enough room in the output buffer), <a href="#next_in">next_in</a> is updated and processing
- will resume at this point for the next call of <a href="#inflate">inflate</a>().
-
- <li> Provide more output starting at <a href="#next_out">next_out</a> and update <a href="#next_out">next_out</a> and
- <a href="#avail_out">avail_out</a> accordingly. <a href="#inflate">inflate</a>() provides as much output as possible,
- until there is no more input data or no more space in the output buffer
- (see below about the flush parameter).
- </ul> <p>
-
- Before the call of <a href="#inflate">inflate</a>(), the application should ensure that at least
- one of the actions is possible, by providing more input and/or consuming
- more output, and updating the next_* and avail_* values accordingly.
- The application can consume the uncompressed output when it wants, for
- example when the output buffer is full (<a href="#avail_out">avail_out</a> == 0), or after each
- call of <a href="#inflate">inflate</a>(). If <a href="#inflate">inflate</a> returns <a href="#Z_OK">Z_OK</a> and with zero <a href="#avail_out">avail_out</a>, it
- must be called again after making room in the output buffer because there
- might be more output pending.
- <p>
-
- If the parameter flush is set to <a href="#Z_SYNC_FLUSH">Z_SYNC_FLUSH</a>, <a href="#inflate">inflate</a> flushes as much
- output as possible to the output buffer. The flushing behavior of <a href="#inflate">inflate</a> is
- not specified for values of the flush parameter other than <a href="#Z_SYNC_FLUSH">Z_SYNC_FLUSH</a>
- and <a href="#Z_FINISH">Z_FINISH</a>, but the current implementation actually flushes as much output
- as possible anyway.
- <p>
-
- <a href="#inflate">inflate</a>() should normally be called until it returns <a href="#Z_STREAM_END">Z_STREAM_END</a> or an
- error. However if all decompression is to be performed in a single step
- (a single call of <a href="#inflate">inflate</a>), the parameter flush should be set to
- <a href="#Z_FINISH">Z_FINISH</a>. In this case all pending input is processed and all pending
- output is flushed ; <a href="#avail_out">avail_out</a> must be large enough to hold all the
- uncompressed data. (The size of the uncompressed data may have been saved
- by the compressor for this purpose.) The next operation on this stream must
- be <a href="#inflateEnd">inflateEnd</a> to deallocate the decompression <a href="#state">state</a>. The use of <a href="#Z_FINISH">Z_FINISH</a>
- is never required, but can be used to inform <a href="#inflate">inflate</a> that a faster routine
- may be used for the single <a href="#inflate">inflate</a>() call.
- <p>
-
- If a preset dictionary is needed at this point (see <a href="#inflateSetDictionary">inflateSetDictionary</a>
- below), <a href="#inflate">inflate</a> sets strm-<a href="#adler">adler</a> to the <a href="#adler32">adler32</a> checksum of the
- dictionary chosen by the compressor and returns <a href="#Z_NEED_DICT">Z_NEED_DICT</a> ; otherwise
- it sets strm-> <a href="#adler">adler</a> to the <a href="#adler32">adler32</a> checksum of all output produced
- so far (that is, <a href="#total_out">total_out</a> bytes) and returns <a href="#Z_OK">Z_OK</a>, <a href="#Z_STREAM_END">Z_STREAM_END</a> or
- an error code as described below. At the end of the stream, <a href="#inflate">inflate</a>()
- checks that its computed <a href="#adler32">adler32</a> checksum is equal to that saved by the
- compressor and returns <a href="#Z_STREAM_END">Z_STREAM_END</a> only if the checksum is correct.
- <p>
-
- <a href="#inflate">inflate</a>() returns <a href="#Z_OK">Z_OK</a> if some progress has been made (more input processed
- or more output produced), <a href="#Z_STREAM_END">Z_STREAM_END</a> if the end of the compressed data has
- been reached and all uncompressed output has been produced, <a href="#Z_NEED_DICT">Z_NEED_DICT</a> if a
- preset dictionary is needed at this point, <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a> if the input data was
- corrupted (input stream not conforming to the zlib format or incorrect
- <a href="#adler32">adler32</a> checksum), <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the stream structure was inconsistent
- (for example if <a href="#next_in">next_in</a> or <a href="#next_out">next_out</a> was NULL), <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not
- enough memory, <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a> if no progress is possible or if there was not
- enough room in the output buffer when <a href="#Z_FINISH">Z_FINISH</a> is used. In the <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a>
- case, the application may then call <a href="#inflateSync">inflateSync</a> to look for a good
- compression block.
- <p>
-
-<font color="Blue"><dt> int <a name="inflateEnd">inflateEnd</a> (<a href="#z_streamp">z_streamp</a> strm);</font>
-<dd>
- All dynamically allocated data structures for this stream are freed.
- This function discards any unprocessed input and does not flush any
- pending output.
- <p>
-
- <a href="#inflateEnd">inflateEnd</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the stream <a href="#state">state</a>
- was inconsistent. In the error case, <a href="#msg">msg</a> may be set but then points to a
- static string (which must not be deallocated).
-</dl>
-<hr>
-<a name="Advanced functions"><h2> Advanced functions </h2>
- The following functions are needed only in some special applications.
-<h3> Function list </h3>
-<ul>
-<li> int <a href="#deflateInit2">deflateInit2</a> (<a href="#z_streamp">z_streamp</a> strm,
-<li> int <a href="#deflateSetDictionary">deflateSetDictionary</a> (<a href="#z_streamp">z_streamp</a> strm, const Bytef *dictionary, uInt dictLength);
-<li> int <a href="#deflateCopy">deflateCopy</a> (<a href="#z_streamp">z_streamp</a> dest, <a href="#z_streamp">z_streamp</a> source);
-<li> int <a href="#deflateReset">deflateReset</a> (<a href="#z_streamp">z_streamp</a> strm);
-<li> int <a href="#deflateParams">deflateParams</a> (<a href="#z_streamp">z_streamp</a> strm, int level, int strategy);
-<li> int <a href="#inflateInit2">inflateInit2</a> (<a href="#z_streamp">z_streamp</a> strm, int windowBits);
-<li> int <a href="#inflateSetDictionary">inflateSetDictionary</a> (<a href="#z_streamp">z_streamp</a> strm, const Bytef *dictionary, uInt dictLength);
-<li> int <a href="#inflateSync">inflateSync</a> (<a href="#z_streamp">z_streamp</a> strm);
-<li> int <a href="#inflateReset">inflateReset</a> (<a href="#z_streamp">z_streamp</a> strm);
-
-</ul>
-<h3> Function description </h3>
-<dl>
-<font color="Blue"><dt> int <a name="deflateInit2">deflateInit2</a> (<a href="#z_streamp">z_streamp</a> strm, int level, int method, int windowBits, int memLevel, int strategy);</font>
-
-<dd> This is another version of <a href="#deflateInit">deflateInit</a> with more compression options. The
- fields <a href="#next_in">next_in</a>, <a href="#zalloc">zalloc</a>, <a href="#zfree">zfree</a> and <a href="#opaque">opaque</a> must be initialized before by
- the caller.<p>
-
- The method parameter is the compression method. It must be <a href="#Z_DEFLATED">Z_DEFLATED</a> in
- this version of the library.<p>
-
- The windowBits parameter is the base two logarithm of the window size
- (the size of the history buffer). It should be in the range 8..15 for this
- version of the library. Larger values of this parameter result in better
- compression at the expense of memory usage. The default value is 15 if
- <a href="#deflateInit">deflateInit</a> is used instead.<p>
-
- The memLevel parameter specifies how much memory should be allocated
- for the internal compression <a href="#state">state</a>. memLevel=1 uses minimum memory but
- is slow and reduces compression ratio ; memLevel=9 uses maximum memory
- for optimal speed. The default value is 8. See zconf.h for total memory
- usage as a function of windowBits and memLevel.<p>
-
- The strategy parameter is used to tune the compression algorithm. Use the
- value <a href="#Z_DEFAULT_STRATEGY">Z_DEFAULT_STRATEGY</a> for normal data, <a href="#Z_FILTERED">Z_FILTERED</a> for data produced by a
- filter (or predictor), or <a href="#Z_HUFFMAN_ONLY">Z_HUFFMAN_ONLY</a> to force Huffman encoding only (no
- string match). Filtered data consists mostly of small values with a
- somewhat random distribution. In this case, the compression algorithm is
- tuned to <a href="#compress">compress</a> them better. The effect of <a href="#Z_FILTERED">Z_FILTERED</a> is to force more
- Huffman coding and less string matching ; it is somewhat intermediate
- between Z_DEFAULT and <a href="#Z_HUFFMAN_ONLY">Z_HUFFMAN_ONLY</a>. The strategy parameter only affects
- the compression ratio but not the correctness of the compressed output even
- if it is not set appropriately.<p>
-
- <a href="#deflateInit2">deflateInit2</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not enough
- memory, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if a parameter is invalid (such as an invalid
- method). <a href="#msg">msg</a> is set to null if there is no error message. <a href="#deflateInit2">deflateInit2</a> does
- not perform any compression: this will be done by <a href="#deflate">deflate</a>().<p>
-
-<font color="Blue"><dt> int <a name="deflateSetDictionary">deflateSetDictionary</a> (<a href="#z_streamp">z_streamp</a> strm, const Bytef *dictionary, uInt dictLength);</font>
-<dd>
- Initializes the compression dictionary from the given byte sequence
- without producing any compressed output. This function must be called
- immediately after <a href="#deflateInit">deflateInit</a>, <a href="#deflateInit2">deflateInit2</a> or <a href="#deflateReset">deflateReset</a>, before any
- call of <a href="#deflate">deflate</a>. The compressor and decompressor must use exactly the same
- dictionary (see <a href="#inflateSetDictionary">inflateSetDictionary</a>).<p>
-
- The dictionary should consist of strings (byte sequences) that are likely
- to be encountered later in the data to be compressed, with the most commonly
- used strings preferably put towards the end of the dictionary. Using a
- dictionary is most useful when the data to be compressed is short and can be
- predicted with good accuracy ; the data can then be compressed better than
- with the default empty dictionary.<p>
-
- Depending on the size of the compression data structures selected by
- <a href="#deflateInit">deflateInit</a> or <a href="#deflateInit2">deflateInit2</a>, a part of the dictionary may in effect be
- discarded, for example if the dictionary is larger than the window size in
- <a href="#deflate">deflate</a> or deflate2. Thus the strings most likely to be useful should be
- put at the end of the dictionary, not at the front.<p>
-
- Upon return of this function, strm-> <a href="#adler">adler</a> is set to the Adler32 value
- of the dictionary ; the decompressor may later use this value to determine
- which dictionary has been used by the compressor. (The Adler32 value
- applies to the whole dictionary even if only a subset of the dictionary is
- actually used by the compressor.)<p>
-
- <a href="#deflateSetDictionary">deflateSetDictionary</a> returns <a href="#Z_OK">Z_OK</a> if success, or <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if a
- parameter is invalid (such as NULL dictionary) or the stream <a href="#state">state</a> is
- inconsistent (for example if <a href="#deflate">deflate</a> has already been called for this stream
- or if the compression method is bsort). <a href="#deflateSetDictionary">deflateSetDictionary</a> does not
- perform any compression: this will be done by <a href="#deflate">deflate</a>().<p>
-
-<font color="Blue"><dt> int <a name="deflateCopy">deflateCopy</a> (<a href="#z_streamp">z_streamp</a> dest, <a href="#z_streamp">z_streamp</a> source);</font>
-<dd>
- Sets the destination stream as a complete copy of the source stream.<p>
-
- This function can be useful when several compression strategies will be
- tried, for example when there are several ways of pre-processing the input
- data with a filter. The streams that will be discarded should then be freed
- by calling <a href="#deflateEnd">deflateEnd</a>. Note that <a href="#deflateCopy">deflateCopy</a> duplicates the internal
- compression <a href="#state">state</a> which can be quite large, so this strategy is slow and
- can consume lots of memory.<p>
-
- <a href="#deflateCopy">deflateCopy</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not
- enough memory, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the source stream <a href="#state">state</a> was inconsistent
- (such as <a href="#zalloc">zalloc</a> being NULL). <a href="#msg">msg</a> is left unchanged in both source and
- destination.<p>
-
-<font color="Blue"><dt> int <a name="deflateReset">deflateReset</a> (<a href="#z_streamp">z_streamp</a> strm);</font>
-<dd> This function is equivalent to <a href="#deflateEnd">deflateEnd</a> followed by <a href="#deflateInit">deflateInit</a>,
- but does not free and reallocate all the internal compression <a href="#state">state</a>.
- The stream will keep the same compression level and any other attributes
- that may have been set by <a href="#deflateInit2">deflateInit2</a>.<p>
-
- <a href="#deflateReset">deflateReset</a> returns <a href="#Z_OK">Z_OK</a> if success, or <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the source
- stream <a href="#state">state</a> was inconsistent (such as <a href="#zalloc">zalloc</a> or <a href="#state">state</a> being NULL).<p>
-
-<font color="Blue"><dt> int <a name="deflateParams">deflateParams</a> (<a href="#z_streamp">z_streamp</a> strm, int level, int strategy);</font>
-<dd>
- Dynamically update the compression level and compression strategy. The
- interpretation of level and strategy is as in <a href="#deflateInit2">deflateInit2</a>. This can be
- used to switch between compression and straight copy of the input data, or
- to switch to a different kind of input data requiring a different
- strategy. If the compression level is changed, the input available so far
- is compressed with the old level (and may be flushed); the new level will
- take effect only at the next call of <a href="#deflate">deflate</a>().<p>
-
- Before the call of <a href="#deflateParams">deflateParams</a>, the stream <a href="#state">state</a> must be set as for
- a call of <a href="#deflate">deflate</a>(), since the currently available input may have to
- be compressed and flushed. In particular, strm-> <a href="#avail_out">avail_out</a> must be
- non-zero.<p>
-
- <a href="#deflateParams">deflateParams</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the source
- stream <a href="#state">state</a> was inconsistent or if a parameter was invalid, <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a>
- if strm->avail_out was zero.<p>
-
-<font color="Blue"><dt> int <a name="inflateInit2">inflateInit2</a> (<a href="#z_streamp">z_streamp</a> strm, int windowBits);</font>
-
-<dd> This is another version of <a href="#inflateInit">inflateInit</a> with an extra parameter. The
- fields <a href="#next_in">next_in</a>, <a href="#avail_in">avail_in</a>, <a href="#zalloc">zalloc</a>, <a href="#zfree">zfree</a> and <a href="#opaque">opaque</a> must be initialized
- before by the caller.<p>
-
- The windowBits parameter is the base two logarithm of the maximum window
- size (the size of the history buffer). It should be in the range 8..15 for
- this version of the library. The default value is 15 if <a href="#inflateInit">inflateInit</a> is used
- instead. If a compressed stream with a larger window size is given as
- input, <a href="#inflate">inflate</a>() will return with the error code <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a> instead of
- trying to allocate a larger window.<p>
-
- <a href="#inflateInit2">inflateInit2</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_MEM_ERROR">Z_MEM_ERROR</a> if there was not enough
- memory, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if a parameter is invalid (such as a negative
- memLevel). <a href="#msg">msg</a> is set to null if there is no error message. <a href="#inflateInit2">inflateInit2</a>
- does not perform any decompression apart from reading the zlib header if
- present: this will be done by <a href="#inflate">inflate</a>(). (So <a href="#next_in">next_in</a> and <a href="#avail_in">avail_in</a> may be
- modified, but <a href="#next_out">next_out</a> and <a href="#avail_out">avail_out</a> are unchanged.)<p>
-
-<font color="Blue"><dt> int <a name="inflateSetDictionary">inflateSetDictionary</a> (<a href="#z_streamp">z_streamp</a> strm, const Bytef *dictionary, uInt dictLength);</font>
-<dd>
- Initializes the decompression dictionary from the given uncompressed byte
- sequence. This function must be called immediately after a call of <a href="#inflate">inflate</a>
- if this call returned <a href="#Z_NEED_DICT">Z_NEED_DICT</a>. The dictionary chosen by the compressor
- can be determined from the Adler32 value returned by this call of
- <a href="#inflate">inflate</a>. The compressor and decompressor must use exactly the same
- dictionary (see <a href="#deflateSetDictionary">deflateSetDictionary</a>).<p>
-
- <a href="#inflateSetDictionary">inflateSetDictionary</a> returns <a href="#Z_OK">Z_OK</a> if success, <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if a
- parameter is invalid (such as NULL dictionary) or the stream <a href="#state">state</a> is
- inconsistent, <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a> if the given dictionary doesn't match the
- expected one (incorrect Adler32 value). <a href="#inflateSetDictionary">inflateSetDictionary</a> does not
- perform any decompression: this will be done by subsequent calls of
- <a href="#inflate">inflate</a>().<p>
-
-<font color="Blue"><dt> int <a name="inflateSync">inflateSync</a> (<a href="#z_streamp">z_streamp</a> strm);</font>
-
-<dd> Skips invalid compressed data until a full flush point (see above the
- description of <a href="#deflate">deflate</a> with <a href="#Z_FULL_FLUSH">Z_FULL_FLUSH</a>) can be found, or until all
- available input is skipped. No output is provided.<p>
-
- <a href="#inflateSync">inflateSync</a> returns <a href="#Z_OK">Z_OK</a> if a full flush point has been found, <a href="#Z_BUF_ERROR">Z_BUF_ERROR</a>
- if no more input was provided, <a href="#Z_DATA_ERROR">Z_DATA_ERROR</a> if no flush point has been found,
- or <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the stream structure was inconsistent. In the success
- case, the application may save the current current value of <a href="#total_in">total_in</a> which
- indicates where valid compressed data was found. In the error case, the
- application may repeatedly call <a href="#inflateSync">inflateSync</a>, providing more input each time,
- until success or end of the input data.<p>
-
-<font color="Blue"><dt> int <a name="inflateReset">inflateReset</a> (<a href="#z_streamp">z_streamp</a> strm);</font>
-<dd>
- This function is equivalent to <a href="#inflateEnd">inflateEnd</a> followed by <a href="#inflateInit">inflateInit</a>,
- but does not free and reallocate all the internal decompression <a href="#state">state</a>.
- The stream will keep attributes that may have been set by <a href="#inflateInit2">inflateInit2</a>.
- <p>
-
- <a href="#inflateReset">inflateReset</a> returns <a href="#Z_OK">Z_OK</a> if success, or <a href="#Z_STREAM_ERROR">Z_STREAM_ERROR</a> if the source
- stream <a href="#state">state</a> was inconsistent (such as <a href="#zalloc">zalloc</a> or <a href="#state">state</a> being NULL).
- <p>
-</dl>
-
-<hr>
-<a name="Checksum functions"><h2> Checksum functions </h2>
- These functions are not related to compression but are exported
- anyway because they might be useful in applications using the
- compression library.
-<h3> Function list </h3>
-<ul>
-<li> uLong <a href="#adler32">adler32</a> (uLong <a href="#adler">adler</a>, const Bytef *buf, uInt len);
-<li> uLong <a href="#crc32">crc32</a> (uLong crc, const Bytef *buf, uInt len);
-</ul>
-<h3> Function description </h3>
-<dl>
-<font color="Blue"><dt> uLong <a name="adler32">adler32</a> (uLong <a href="#adler">adler</a>, const Bytef *buf, uInt len);</font>
-<dd>
- Update a running Adler-32 checksum with the bytes buf[0..len-1] and
- return the updated checksum. If buf is NULL, this function returns
- the required initial value for the checksum.
- <p>
- An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
- much faster. Usage example:
- <pre>
-
- uLong <a href="#adler">adler</a> = <a href="#adler32">adler32</a>(0L, <a href="#Z_NULL">Z_NULL</a>, 0);
-
- while (read_buffer(buffer, length) != EOF) {
- <a href="#adler">adler</a> = <a href="#adler32">adler32</a>(<a href="#adler">adler</a>, buffer, length);
- }
- if (<a href="#adler">adler</a> != original_adler) error();
- </pre>
-
-<font color="Blue"><dt> uLong <a name="crc32">crc32</a> (uLong crc, const Bytef *buf, uInt len);</font>
-<dd>
- Update a running crc with the bytes buf[0..len-1] and return the updated
- crc. If buf is NULL, this function returns the required initial value
- for the crc. Pre- and post-conditioning (one's complement) is performed
- within this function so it shouldn't be done by the application.
- Usage example:
- <pre>
-
- uLong crc = <a href="#crc32">crc32</a>(0L, <a href="#Z_NULL">Z_NULL</a>, 0);
-
- while (read_buffer(buffer, length) != EOF) {
- crc = <a href="#crc32">crc32</a>(crc, buffer, length);
- }
- if (crc != original_crc) error();
- </pre>
-</dl>
-<hr>
-<a name="struct z_stream_s"><h2> struct z_stream_s </h2>
-<font color="Blue">
-<a name="z_stream_s">
-<pre>
-typedef struct z_stream_s {
- Bytef *<a name="next_in">next_in</a>; /* next input byte */
- uInt <a name="avail_in">avail_in</a>; /* number of bytes available at <a href="#next_in">next_in</a> */
- uLong <a name="total_in">total_in</a>; /* total nb of input bytes read so far */
-
- Bytef *<a name="next_out">next_out</a>; /* next output byte should be put there */
- uInt <a name="avail_out">avail_out</a>; /* remaining free space at <a href="#next_out">next_out</a> */
- uLong <a name="total_out">total_out</a>; /* total nb of bytes output so far */
-
- char *<a name="msg">msg</a>; /* last error message, NULL if no error */
- struct internal_state FAR *<a name="state">state</a>; /* not visible by applications */
-
- alloc_func <a name="zalloc">zalloc</a>; /* used to allocate the internal <a href="#state">state</a> */
- free_func <a name="zfree">zfree</a>; /* used to free the internal <a href="#state">state</a> */
- voidpf <a name="opaque">opaque</a>; /* private data object passed to <a href="#zalloc">zalloc</a> and <a href="#zfree">zfree</a> */
-
- int <a name="data_type">data_type</a>; /* best guess about the data type: ascii or binary */
- uLong <a name="adler">adler</a>; /* <a href="#adler32">adler32</a> value of the uncompressed data */
- uLong <a name="reserved">reserved</a>; /* <a href="#reserved">reserved</a> for future use */
-} <a href="#z_stream_s">z_stream</a> ;
-
-typedef <a href="#z_stream_s">z_stream</a> FAR * <a name="z_streamp">z_streamp</a>; ÿ
-</pre>
-</font>
- The application must update <a href="#next_in">next_in</a> and <a href="#avail_in">avail_in</a> when <a href="#avail_in">avail_in</a> has
- dropped to zero. It must update <a href="#next_out">next_out</a> and <a href="#avail_out">avail_out</a> when <a href="#avail_out">avail_out</a>
- has dropped to zero. The application must initialize <a href="#zalloc">zalloc</a>, <a href="#zfree">zfree</a> and
- <a href="#opaque">opaque</a> before calling the init function. All other fields are set by the
- compression library and must not be updated by the application. <p>
-
- The <a href="#opaque">opaque</a> value provided by the application will be passed as the first
- parameter for calls of <a href="#zalloc">zalloc</a> and <a href="#zfree">zfree</a>. This can be useful for custom
- memory management. The compression library attaches no meaning to the
- <a href="#opaque">opaque</a> value. <p>
-
- <a href="#zalloc">zalloc</a> must return <a href="#Z_NULL">Z_NULL</a> if there is not enough memory for the object.
- If zlib is used in a multi-threaded application, <a href="#zalloc">zalloc</a> and <a href="#zfree">zfree</a> must be
- thread safe. <p>
-
- On 16-bit systems, the functions <a href="#zalloc">zalloc</a> and <a href="#zfree">zfree</a> must be able to allocate
- exactly 65536 bytes, but will not be required to allocate more than this
- if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
- pointers returned by <a href="#zalloc">zalloc</a> for objects of exactly 65536 bytes *must*
- have their offset normalized to zero. The default allocation function
- provided by this library ensures this (see zutil.c). To reduce memory
- requirements and avoid any allocation of 64K objects, at the expense of
- compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
- <p>
-
- The fields <a href="#total_in">total_in</a> and <a href="#total_out">total_out</a> can be used for statistics or
- progress reports. After compression, <a href="#total_in">total_in</a> holds the total size of
- the uncompressed data and may be saved for use in the decompressor
- (particularly if the decompressor wants to decompress everything in
- a single step). <p>
-
-<hr>
-<a name="Constants"><h2> Constants </h2>
-<font color="Blue">
-<pre>
-#define <a name="Z_NO_FLUSH">Z_NO_FLUSH</a> 0
-#define <a name="Z_PARTIAL_FLUSH">Z_PARTIAL_FLUSH</a> 1
- /* will be removed, use <a href="#Z_SYNC_FLUSH">Z_SYNC_FLUSH</a> instead */
-#define <a name="Z_SYNC_FLUSH">Z_SYNC_FLUSH</a> 2
-#define <a name="Z_FULL_FLUSH">Z_FULL_FLUSH</a> 3
-#define <a name="Z_FINISH">Z_FINISH</a> 4
-/* Allowed flush values ; see <a href="#deflate">deflate</a>() below for details */
-
-#define <a name="Z_OK">Z_OK</a> 0
-#define <a name="Z_STREAM_END">Z_STREAM_END</a> 1
-#define <a name="Z_NEED_DICT">Z_NEED_DICT</a> 2
-#define <a name="Z_ERRNO">Z_ERRNO</a> (-1)
-#define <a name="Z_STREAM_ERROR">Z_STREAM_ERROR</a> (-2)
-#define <a name="Z_DATA_ERROR">Z_DATA_ERROR</a> (-3)
-#define <a name="Z_MEM_ERROR">Z_MEM_ERROR</a> (-4)
-#define <a name="Z_BUF_ERROR">Z_BUF_ERROR</a> (-5)
-#define <a name="Z_VERSION_ERROR">Z_VERSION_ERROR</a> (-6)
-/* Return codes for the compression/decompression functions. Negative
- * values are errors, positive values are used for special but normal events.
- */
-
-#define <a name="Z_NO_COMPRESSION">Z_NO_COMPRESSION</a> 0
-#define <a name="Z_BEST_SPEED">Z_BEST_SPEED</a> 1
-#define <a name="Z_BEST_COMPRESSION">Z_BEST_COMPRESSION</a> 9
-#define <a name="Z_DEFAULT_COMPRESSION">Z_DEFAULT_COMPRESSION</a> (-1)
-/* compression levels */
-
-#define <a name="Z_FILTERED">Z_FILTERED</a> 1
-#define <a name="Z_HUFFMAN_ONLY">Z_HUFFMAN_ONLY</a> 2
-#define <a name="Z_DEFAULT_STRATEGY">Z_DEFAULT_STRATEGY</a> 0
-/* compression strategy ; see <a href="#deflateInit2">deflateInit2</a>() below for details */
-
-#define <a name="Z_BINARY">Z_BINARY</a> 0
-#define <a name="Z_ASCII">Z_ASCII</a> 1
-#define <a name="Z_UNKNOWN">Z_UNKNOWN</a> 2
-/* Possible values of the <a href="#data_type">data_type</a> field */
-
-#define <a name="Z_DEFLATED">Z_DEFLATED</a> 8
-/* The <a href="#deflate">deflate</a> compression method (the only one supported in this version) */
-
-#define <a name="Z_NULL">Z_NULL</a> 0 /* for initializing <a href="#zalloc">zalloc</a>, <a href="#zfree">zfree</a>, <a href="#opaque">opaque</a> */
-
-#define <a name="zlib_version">zlib_version</a> <a href="#zlibVersion">zlibVersion</a>()
-/* for compatibility with versions less than 1.0.2 */
-</pre>
-</font>
-
-<hr>
-<a name="Misc"><h2> Misc </h2>
- <a href="#deflateInit">deflateInit</a> and <a href="#inflateInit">inflateInit</a> are macros to allow checking the zlib version
- and the compiler's view of <a href="#z_stream_s">z_stream</a>.
- <p>
- Other functions:
- <dl>
- <font color="Blue"><dt> const char * <a name="zError">zError</a> (int err);</font>
- <font color="Blue"><dt> int <a name="inflateSyncPoint">inflateSyncPoint</a> (<a href="#z_streamp">z_streamp</a> z);</font>
- <font color="Blue"><dt> const uLongf * <a name="get_crc_table">get_crc_table</a> (void);</font>
- </dl>
- <hr>
- <font size="-1">
- Last update: Wed Oct 13 20:42:34 1999<br>
- piapi@csie.ntu.edu.tw
- </font>
-
-</body>
-</html>
+++ /dev/null
-This directory contains project files for building zlib under various
-Integrated Development Environments (IDE).
-
-If you wish to submit a new project to this directory, you should comply
-to the following requirements. Otherwise (e.g. if you wish to integrate
-a custom piece of code that changes the zlib interface or its behavior),
-please consider submitting the project to the contrib directory.
-
-
-Requirements
-============
-
-- The project must build zlib using the source files from the official
- zlib source distribution, exclusively.
-
-- If the project produces redistributable builds (e.g. shared objects
- or DLL files), these builds must be compatible to those produced by
- makefiles, if such makefiles exist in the zlib distribution.
- In particular, if the project produces a DLL build for the Win32
- platform, this build must comply to the officially-ammended Win32 DLL
- Application Binary Interface (ABI), described in win32/DLL_FAQ.txt.
-
-- The project may provide additional build targets, which depend on
- 3rd-party (unofficially-supported) software, present in the contrib
- directory. For example, it is possible to provide an "ASM build",
- besides the officially-supported build, and have ASM source files
- among its dependencies.
-
-- If there are significant differences between the project files created
- by different versions of an IDE (e.g. Visual C++ 6.0 vs. 7.0), the name
- of the project directory should contain the version number of the IDE
- for which the project is intended (e.g. "visualc6" for Visual C++ 6.0,
- or "visualc7" for Visual C++ 7.0 and 7.1).
-
-
-Current projects
-================
-
-visualc6/ by Simon-Pierre Cadieux <methodex@methodex.ca>
- and Cosmin Truta <cosmint@cs.ubbcluj.ro>
- Project for Microsoft Visual C++ 6.0
+++ /dev/null
-Microsoft Developer Studio Project Files, Format Version 6.00 for zlib.\r
-\r
-Copyright (C) 2000-2004 Simon-Pierre Cadieux.\r
-Copyright (C) 2004 Cosmin Truta.\r
-For conditions of distribution and use, see copyright notice in zlib.h.\r
-\r
-\r
-This project builds the zlib binaries as follows:\r
-\r
-* Win32_DLL_Release\zlib1.dll DLL build\r
-* Win32_DLL_Debug\zlib1d.dll DLL build (debug version)\r
-* Win32_DLL_ASM_Release\zlib1.dll DLL build using ASM code\r
-* Win32_DLL_ASM_Debug\zlib1d.dll DLL build using ASM code (debug version)\r
-* Win32_LIB_Release\zlib.lib static build\r
-* Win32_LIB_Debug\zlibd.lib static build (debug version)\r
-* Win32_LIB_ASM_Release\zlib.lib static build using ASM code\r
-* Win32_LIB_ASM_Debug\zlibd.lib static build using ASM code (debug version)\r
-\r
-\r
-For more information regarding the DLL builds, please see the DLL FAQ\r
-in ..\..\win32\DLL_FAQ.txt.\r
-\r
-\r
-To build and test:\r
-\r
-1) On the main menu, select "File | Open Workspace".\r
- Open "zlib.dsw".\r
-\r
-2) Select "Build | Set Active Configuration".\r
- Choose the configuration you wish to build.\r
-\r
-3) Select "Build | Clean".\r
-\r
-4) Select "Build | Build ... (F7)". Ignore warning messages about\r
- not being able to find certain include files (e.g. alloc.h).\r
-\r
-5) If you built one of the sample programs (example or minigzip),\r
- select "Build | Execute ... (Ctrl+F5)".\r
-\r
-\r
-To use:\r
-\r
-1) Select "Project | Settings (Alt+F7)".\r
- Make note of the configuration names used in your project.\r
- Usually, these names are "Win32 Release" and "Win32 Debug".\r
-\r
-2) In the Workspace window, select the "FileView" tab.\r
- Right-click on the root item "Workspace '...'".\r
- Select "Insert Project into Workspace".\r
- Switch on the checkbox "Dependency of:", and select the name\r
- of your project. Open "zlib.dsp".\r
-\r
-3) Select "Build | Configurations".\r
- For each configuration of your project:\r
- 3.1) Choose the zlib configuration you wish to use.\r
- 3.2) Click on "Add".\r
- 3.3) Set the new zlib configuration name to the name used by\r
- the configuration from the current iteration.\r
-\r
-4) Select "Build | Set Active Configuration".\r
- Choose the configuration you wish to build.\r
-\r
-5) Select "Build | Build ... (F7)".\r
-\r
-6) If you built an executable program, select\r
- "Build | Execute ... (Ctrl+F5)".\r
-\r
-\r
-Note:\r
-\r
-To build the ASM-enabled code, you need Microsoft Assembler\r
-(ML.EXE). You can get it by downloading and installing the\r
-latest Processor Pack for Visual C++ 6.0.\r
+++ /dev/null
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-/* trees.c -- output deflated data using Huffman coding
- * Copyright (C) 1995-2005 Jean-loup Gailly
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * ALGORITHM
- *
- * The "deflation" process uses several Huffman trees. The more
- * common source values are represented by shorter bit sequences.
- *
- * Each code tree is stored in a compressed form which is itself
- * a Huffman encoding of the lengths of all the code strings (in
- * ascending order by source values). The actual code strings are
- * reconstructed from the lengths in the inflate process, as described
- * in the deflate specification.
- *
- * REFERENCES
- *
- * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
- * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
- *
- * Storer, James A.
- * Data Compression: Methods and Theory, pp. 49-50.
- * Computer Science Press, 1988. ISBN 0-7167-8156-5.
- *
- * Sedgewick, R.
- * Algorithms, p290.
- * Addison-Wesley, 1983. ISBN 0-201-06672-6.
- */
-
-/* @(#) $Id$ */
-
-/* #define GEN_TREES_H */
-
-#include "deflate.h"
-
-#ifdef DEBUG
-# include <ctype.h>
-#endif
-
-/* ===========================================================================
- * Constants
- */
-
-#define MAX_BL_BITS 7
-/* Bit length codes must not exceed MAX_BL_BITS bits */
-
-#define END_BLOCK 256
-/* end of block literal code */
-
-#define REP_3_6 16
-/* repeat previous bit length 3-6 times (2 bits of repeat count) */
-
-#define REPZ_3_10 17
-/* repeat a zero length 3-10 times (3 bits of repeat count) */
-
-#define REPZ_11_138 18
-/* repeat a zero length 11-138 times (7 bits of repeat count) */
-
-local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
- = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};
-
-local const int extra_dbits[D_CODES] /* extra bits for each distance code */
- = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
-
-local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
- = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};
-
-local const uch bl_order[BL_CODES]
- = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
-/* The lengths of the bit length codes are sent in order of decreasing
- * probability, to avoid transmitting the lengths for unused bit length codes.
- */
-
-#define Buf_size (8 * 2*sizeof(char))
-/* Number of bits used within bi_buf. (bi_buf might be implemented on
- * more than 16 bits on some systems.)
- */
-
-/* ===========================================================================
- * Local data. These are initialized only once.
- */
-
-#define DIST_CODE_LEN 512 /* see definition of array dist_code below */
-
-#if defined(GEN_TREES_H) || !defined(STDC)
-/* non ANSI compilers may not accept trees.h */
-
-local ct_data static_ltree[L_CODES+2];
-/* The static literal tree. Since the bit lengths are imposed, there is no
- * need for the L_CODES extra codes used during heap construction. However
- * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
- * below).
- */
-
-local ct_data static_dtree[D_CODES];
-/* The static distance tree. (Actually a trivial tree since all codes use
- * 5 bits.)
- */
-
-uch _dist_code[DIST_CODE_LEN];
-/* Distance codes. The first 256 values correspond to the distances
- * 3 .. 258, the last 256 values correspond to the top 8 bits of
- * the 15 bit distances.
- */
-
-uch _length_code[MAX_MATCH-MIN_MATCH+1];
-/* length code for each normalized match length (0 == MIN_MATCH) */
-
-local int base_length[LENGTH_CODES];
-/* First normalized length for each code (0 = MIN_MATCH) */
-
-local int base_dist[D_CODES];
-/* First normalized distance for each code (0 = distance of 1) */
-
-#else
-# include "trees.h"
-#endif /* GEN_TREES_H */
-
-struct static_tree_desc_s {
- const ct_data *static_tree; /* static tree or NULL */
- const intf *extra_bits; /* extra bits for each code or NULL */
- int extra_base; /* base index for extra_bits */
- int elems; /* max number of elements in the tree */
- int max_length; /* max bit length for the codes */
-};
-
-local static_tree_desc static_l_desc =
-{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
-
-local static_tree_desc static_d_desc =
-{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS};
-
-local static_tree_desc static_bl_desc =
-{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS};
-
-/* ===========================================================================
- * Local (static) routines in this file.
- */
-
-local void tr_static_init OF((void));
-local void init_block OF((deflate_state *s));
-local void pqdownheap OF((deflate_state *s, ct_data *tree, int k));
-local void gen_bitlen OF((deflate_state *s, tree_desc *desc));
-local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count));
-local void build_tree OF((deflate_state *s, tree_desc *desc));
-local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code));
-local void send_tree OF((deflate_state *s, ct_data *tree, int max_code));
-local int build_bl_tree OF((deflate_state *s));
-local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
- int blcodes));
-local void compress_block OF((deflate_state *s, const ct_data *ltree,
- const ct_data *dtree));
-local void set_data_type OF((deflate_state *s));
-local unsigned bi_reverse OF((unsigned value, int length));
-local void bi_windup OF((deflate_state *s));
-local void bi_flush OF((deflate_state *s));
-local void copy_block OF((deflate_state *s, charf *buf, unsigned len,
- int header));
-
-#ifdef GEN_TREES_H
-local void gen_trees_header OF((void));
-#endif
-
-#ifndef DEBUG
-# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
- /* Send a code of the given tree. c and tree must not have side effects */
-
-#else /* DEBUG */
-# define send_code(s, c, tree) \
- { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
- send_bits(s, tree[c].Code, tree[c].Len); }
-#endif
-
-/* ===========================================================================
- * Output a short LSB first on the stream.
- * IN assertion: there is enough room in pendingBuf.
- */
-#define put_short(s, w) { \
- put_byte(s, (uch)((w) & 0xff)); \
- put_byte(s, (uch)((ush)(w) >> 8)); \
-}
-
-/* ===========================================================================
- * Send a value on a given number of bits.
- * IN assertion: length <= 16 and value fits in length bits.
- */
-#ifdef DEBUG
-local void send_bits OF((deflate_state *s, int value, int length));
-
-local void send_bits(s, value, length)
- deflate_state *s;
- int value; /* value to send */
- int length; /* number of bits */
-{
- Tracevv((stderr," l %2d v %4x ", length, value));
- Assert(length > 0 && length <= 15, "invalid length");
- s->bits_sent += (ulg)length;
-
- /* If not enough room in bi_buf, use (valid) bits from bi_buf and
- * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
- * unused bits in value.
- */
- if (s->bi_valid > (int)Buf_size - length) {
- s->bi_buf |= (value << s->bi_valid);
- put_short(s, s->bi_buf);
- s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
- s->bi_valid += length - Buf_size;
- } else {
- s->bi_buf |= value << s->bi_valid;
- s->bi_valid += length;
- }
-}
-#else /* !DEBUG */
-
-#define send_bits(s, value, length) \
-{ int len = length;\
- if (s->bi_valid > (int)Buf_size - len) {\
- int val = value;\
- s->bi_buf |= (val << s->bi_valid);\
- put_short(s, s->bi_buf);\
- s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
- s->bi_valid += len - Buf_size;\
- } else {\
- s->bi_buf |= (value) << s->bi_valid;\
- s->bi_valid += len;\
- }\
-}
-#endif /* DEBUG */
-
-
-/* the arguments must not have side effects */
-
-/* ===========================================================================
- * Initialize the various 'constant' tables.
- */
-local void tr_static_init()
-{
-#if defined(GEN_TREES_H) || !defined(STDC)
- static int static_init_done = 0;
- int n; /* iterates over tree elements */
- int bits; /* bit counter */
- int length; /* length value */
- int code; /* code value */
- int dist; /* distance index */
- ush bl_count[MAX_BITS+1];
- /* number of codes at each bit length for an optimal tree */
-
- if (static_init_done) return;
-
- /* For some embedded targets, global variables are not initialized: */
- static_l_desc.static_tree = static_ltree;
- static_l_desc.extra_bits = extra_lbits;
- static_d_desc.static_tree = static_dtree;
- static_d_desc.extra_bits = extra_dbits;
- static_bl_desc.extra_bits = extra_blbits;
-
- /* Initialize the mapping length (0..255) -> length code (0..28) */
- length = 0;
- for (code = 0; code < LENGTH_CODES-1; code++) {
- base_length[code] = length;
- for (n = 0; n < (1<<extra_lbits[code]); n++) {
- _length_code[length++] = (uch)code;
- }
- }
- Assert (length == 256, "tr_static_init: length != 256");
- /* Note that the length 255 (match length 258) can be represented
- * in two different ways: code 284 + 5 bits or code 285, so we
- * overwrite length_code[255] to use the best encoding:
- */
- _length_code[length-1] = (uch)code;
-
- /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
- dist = 0;
- for (code = 0 ; code < 16; code++) {
- base_dist[code] = dist;
- for (n = 0; n < (1<<extra_dbits[code]); n++) {
- _dist_code[dist++] = (uch)code;
- }
- }
- Assert (dist == 256, "tr_static_init: dist != 256");
- dist >>= 7; /* from now on, all distances are divided by 128 */
- for ( ; code < D_CODES; code++) {
- base_dist[code] = dist << 7;
- for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
- _dist_code[256 + dist++] = (uch)code;
- }
- }
- Assert (dist == 256, "tr_static_init: 256+dist != 512");
-
- /* Construct the codes of the static literal tree */
- for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
- n = 0;
- while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
- while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
- while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
- while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
- /* Codes 286 and 287 do not exist, but we must include them in the
- * tree construction to get a canonical Huffman tree (longest code
- * all ones)
- */
- gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);
-
- /* The static distance tree is trivial: */
- for (n = 0; n < D_CODES; n++) {
- static_dtree[n].Len = 5;
- static_dtree[n].Code = bi_reverse((unsigned)n, 5);
- }
- static_init_done = 1;
-
-# ifdef GEN_TREES_H
- gen_trees_header();
-# endif
-#endif /* defined(GEN_TREES_H) || !defined(STDC) */
-}
-
-/* ===========================================================================
- * Genererate the file trees.h describing the static trees.
- */
-#ifdef GEN_TREES_H
-# ifndef DEBUG
-# include <stdio.h>
-# endif
-
-# define SEPARATOR(i, last, width) \
- ((i) == (last)? "\n};\n\n" : \
- ((i) % (width) == (width)-1 ? ",\n" : ", "))
-
-void gen_trees_header()
-{
- FILE *header = fopen("trees.h", "w");
- int i;
-
- Assert (header != NULL, "Can't open trees.h");
- fprintf(header,
- "/* header created automatically with -DGEN_TREES_H */\n\n");
-
- fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
- for (i = 0; i < L_CODES+2; i++) {
- fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
- static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
- }
-
- fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
- for (i = 0; i < D_CODES; i++) {
- fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
- static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
- }
-
- fprintf(header, "const uch _dist_code[DIST_CODE_LEN] = {\n");
- for (i = 0; i < DIST_CODE_LEN; i++) {
- fprintf(header, "%2u%s", _dist_code[i],
- SEPARATOR(i, DIST_CODE_LEN-1, 20));
- }
-
- fprintf(header, "const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
- for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
- fprintf(header, "%2u%s", _length_code[i],
- SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
- }
-
- fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
- for (i = 0; i < LENGTH_CODES; i++) {
- fprintf(header, "%1u%s", base_length[i],
- SEPARATOR(i, LENGTH_CODES-1, 20));
- }
-
- fprintf(header, "local const int base_dist[D_CODES] = {\n");
- for (i = 0; i < D_CODES; i++) {
- fprintf(header, "%5u%s", base_dist[i],
- SEPARATOR(i, D_CODES-1, 10));
- }
-
- fclose(header);
-}
-#endif /* GEN_TREES_H */
-
-/* ===========================================================================
- * Initialize the tree data structures for a new zlib stream.
- */
-void _tr_init(s)
- deflate_state *s;
-{
- tr_static_init();
-
- s->l_desc.dyn_tree = s->dyn_ltree;
- s->l_desc.stat_desc = &static_l_desc;
-
- s->d_desc.dyn_tree = s->dyn_dtree;
- s->d_desc.stat_desc = &static_d_desc;
-
- s->bl_desc.dyn_tree = s->bl_tree;
- s->bl_desc.stat_desc = &static_bl_desc;
-
- s->bi_buf = 0;
- s->bi_valid = 0;
- s->last_eob_len = 8; /* enough lookahead for inflate */
-#ifdef DEBUG
- s->compressed_len = 0L;
- s->bits_sent = 0L;
-#endif
-
- /* Initialize the first block of the first file: */
- init_block(s);
-}
-
-/* ===========================================================================
- * Initialize a new block.
- */
-local void init_block(s)
- deflate_state *s;
-{
- int n; /* iterates over tree elements */
-
- /* Initialize the trees. */
- for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;
- for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;
- for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
-
- s->dyn_ltree[END_BLOCK].Freq = 1;
- s->opt_len = s->static_len = 0L;
- s->last_lit = s->matches = 0;
-}
-
-#define SMALLEST 1
-/* Index within the heap array of least frequent node in the Huffman tree */
-
-
-/* ===========================================================================
- * Remove the smallest element from the heap and recreate the heap with
- * one less element. Updates heap and heap_len.
- */
-#define pqremove(s, tree, top) \
-{\
- top = s->heap[SMALLEST]; \
- s->heap[SMALLEST] = s->heap[s->heap_len--]; \
- pqdownheap(s, tree, SMALLEST); \
-}
-
-/* ===========================================================================
- * Compares to subtrees, using the tree depth as tie breaker when
- * the subtrees have equal frequency. This minimizes the worst case length.
- */
-#define smaller(tree, n, m, depth) \
- (tree[n].Freq < tree[m].Freq || \
- (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
-
-/* ===========================================================================
- * Restore the heap property by moving down the tree starting at node k,
- * exchanging a node with the smallest of its two sons if necessary, stopping
- * when the heap property is re-established (each father smaller than its
- * two sons).
- */
-local void pqdownheap(s, tree, k)
- deflate_state *s;
- ct_data *tree; /* the tree to restore */
- int k; /* node to move down */
-{
- int v = s->heap[k];
- int j = k << 1; /* left son of k */
- while (j <= s->heap_len) {
- /* Set j to the smallest of the two sons: */
- if (j < s->heap_len &&
- smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
- j++;
- }
- /* Exit if v is smaller than both sons */
- if (smaller(tree, v, s->heap[j], s->depth)) break;
-
- /* Exchange v with the smallest son */
- s->heap[k] = s->heap[j]; k = j;
-
- /* And continue down the tree, setting j to the left son of k */
- j <<= 1;
- }
- s->heap[k] = v;
-}
-
-/* ===========================================================================
- * Compute the optimal bit lengths for a tree and update the total bit length
- * for the current block.
- * IN assertion: the fields freq and dad are set, heap[heap_max] and
- * above are the tree nodes sorted by increasing frequency.
- * OUT assertions: the field len is set to the optimal bit length, the
- * array bl_count contains the frequencies for each bit length.
- * The length opt_len is updated; static_len is also updated if stree is
- * not null.
- */
-local void gen_bitlen(s, desc)
- deflate_state *s;
- tree_desc *desc; /* the tree descriptor */
-{
- ct_data *tree = desc->dyn_tree;
- int max_code = desc->max_code;
- const ct_data *stree = desc->stat_desc->static_tree;
- const intf *extra = desc->stat_desc->extra_bits;
- int base = desc->stat_desc->extra_base;
- int max_length = desc->stat_desc->max_length;
- int h; /* heap index */
- int n, m; /* iterate over the tree elements */
- int bits; /* bit length */
- int xbits; /* extra bits */
- ush f; /* frequency */
- int overflow = 0; /* number of elements with bit length too large */
-
- for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;
-
- /* In a first pass, compute the optimal bit lengths (which may
- * overflow in the case of the bit length tree).
- */
- tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
-
- for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
- n = s->heap[h];
- bits = tree[tree[n].Dad].Len + 1;
- if (bits > max_length) bits = max_length, overflow++;
- tree[n].Len = (ush)bits;
- /* We overwrite tree[n].Dad which is no longer needed */
-
- if (n > max_code) continue; /* not a leaf node */
-
- s->bl_count[bits]++;
- xbits = 0;
- if (n >= base) xbits = extra[n-base];
- f = tree[n].Freq;
- s->opt_len += (ulg)f * (bits + xbits);
- if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits);
- }
- if (overflow == 0) return;
-
- Trace((stderr,"\nbit length overflow\n"));
- /* This happens for example on obj2 and pic of the Calgary corpus */
-
- /* Find the first bit length which could increase: */
- do {
- bits = max_length-1;
- while (s->bl_count[bits] == 0) bits--;
- s->bl_count[bits]--; /* move one leaf down the tree */
- s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
- s->bl_count[max_length]--;
- /* The brother of the overflow item also moves one step up,
- * but this does not affect bl_count[max_length]
- */
- overflow -= 2;
- } while (overflow > 0);
-
- /* Now recompute all bit lengths, scanning in increasing frequency.
- * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
- * lengths instead of fixing only the wrong ones. This idea is taken
- * from 'ar' written by Haruhiko Okumura.)
- */
- for (bits = max_length; bits != 0; bits--) {
- n = s->bl_count[bits];
- while (n != 0) {
- m = s->heap[--h];
- if (m > max_code) continue;
- if ((unsigned) tree[m].Len != (unsigned) bits) {
- Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
- s->opt_len += ((long)bits - (long)tree[m].Len)
- *(long)tree[m].Freq;
- tree[m].Len = (ush)bits;
- }
- n--;
- }
- }
-}
-
-/* ===========================================================================
- * Generate the codes for a given tree and bit counts (which need not be
- * optimal).
- * IN assertion: the array bl_count contains the bit length statistics for
- * the given tree and the field len is set for all tree elements.
- * OUT assertion: the field code is set for all tree elements of non
- * zero code length.
- */
-local void gen_codes (tree, max_code, bl_count)
- ct_data *tree; /* the tree to decorate */
- int max_code; /* largest code with non zero frequency */
- ushf *bl_count; /* number of codes at each bit length */
-{
- ush next_code[MAX_BITS+1]; /* next code value for each bit length */
- ush code = 0; /* running code value */
- int bits; /* bit index */
- int n; /* code index */
-
- /* The distribution counts are first used to generate the code values
- * without bit reversal.
- */
- for (bits = 1; bits <= MAX_BITS; bits++) {
- next_code[bits] = code = (code + bl_count[bits-1]) << 1;
- }
- /* Check that the bit counts in bl_count are consistent. The last code
- * must be all ones.
- */
- Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
- "inconsistent bit counts");
- Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
-
- for (n = 0; n <= max_code; n++) {
- int len = tree[n].Len;
- if (len == 0) continue;
- /* Now reverse the bits */
- tree[n].Code = bi_reverse(next_code[len]++, len);
-
- Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
- n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
- }
-}
-
-/* ===========================================================================
- * Construct one Huffman tree and assigns the code bit strings and lengths.
- * Update the total bit length for the current block.
- * IN assertion: the field freq is set for all tree elements.
- * OUT assertions: the fields len and code are set to the optimal bit length
- * and corresponding code. The length opt_len is updated; static_len is
- * also updated if stree is not null. The field max_code is set.
- */
-local void build_tree(s, desc)
- deflate_state *s;
- tree_desc *desc; /* the tree descriptor */
-{
- ct_data *tree = desc->dyn_tree;
- const ct_data *stree = desc->stat_desc->static_tree;
- int elems = desc->stat_desc->elems;
- int n, m; /* iterate over heap elements */
- int max_code = -1; /* largest code with non zero frequency */
- int node; /* new node being created */
-
- /* Construct the initial heap, with least frequent element in
- * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
- * heap[0] is not used.
- */
- s->heap_len = 0, s->heap_max = HEAP_SIZE;
-
- for (n = 0; n < elems; n++) {
- if (tree[n].Freq != 0) {
- s->heap[++(s->heap_len)] = max_code = n;
- s->depth[n] = 0;
- } else {
- tree[n].Len = 0;
- }
- }
-
- /* The pkzip format requires that at least one distance code exists,
- * and that at least one bit should be sent even if there is only one
- * possible code. So to avoid special checks later on we force at least
- * two codes of non zero frequency.
- */
- while (s->heap_len < 2) {
- node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
- tree[node].Freq = 1;
- s->depth[node] = 0;
- s->opt_len--; if (stree) s->static_len -= stree[node].Len;
- /* node is 0 or 1 so it does not have extra bits */
- }
- desc->max_code = max_code;
-
- /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
- * establish sub-heaps of increasing lengths:
- */
- for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
-
- /* Construct the Huffman tree by repeatedly combining the least two
- * frequent nodes.
- */
- node = elems; /* next internal node of the tree */
- do {
- pqremove(s, tree, n); /* n = node of least frequency */
- m = s->heap[SMALLEST]; /* m = node of next least frequency */
-
- s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
- s->heap[--(s->heap_max)] = m;
-
- /* Create a new node father of n and m */
- tree[node].Freq = tree[n].Freq + tree[m].Freq;
- s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?
- s->depth[n] : s->depth[m]) + 1);
- tree[n].Dad = tree[m].Dad = (ush)node;
-#ifdef DUMP_BL_TREE
- if (tree == s->bl_tree) {
- fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
- node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
- }
-#endif
- /* and insert the new node in the heap */
- s->heap[SMALLEST] = node++;
- pqdownheap(s, tree, SMALLEST);
-
- } while (s->heap_len >= 2);
-
- s->heap[--(s->heap_max)] = s->heap[SMALLEST];
-
- /* At this point, the fields freq and dad are set. We can now
- * generate the bit lengths.
- */
- gen_bitlen(s, (tree_desc *)desc);
-
- /* The field len is now set, we can generate the bit codes */
- gen_codes ((ct_data *)tree, max_code, s->bl_count);
-}
-
-/* ===========================================================================
- * Scan a literal or distance tree to determine the frequencies of the codes
- * in the bit length tree.
- */
-local void scan_tree (s, tree, max_code)
- deflate_state *s;
- ct_data *tree; /* the tree to be scanned */
- int max_code; /* and its largest code of non zero frequency */
-{
- int n; /* iterates over all tree elements */
- int prevlen = -1; /* last emitted length */
- int curlen; /* length of current code */
- int nextlen = tree[0].Len; /* length of next code */
- int count = 0; /* repeat count of the current code */
- int max_count = 7; /* max repeat count */
- int min_count = 4; /* min repeat count */
-
- if (nextlen == 0) max_count = 138, min_count = 3;
- tree[max_code+1].Len = (ush)0xffff; /* guard */
-
- for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
- if (++count < max_count && curlen == nextlen) {
- continue;
- } else if (count < min_count) {
- s->bl_tree[curlen].Freq += count;
- } else if (curlen != 0) {
- if (curlen != prevlen) s->bl_tree[curlen].Freq++;
- s->bl_tree[REP_3_6].Freq++;
- } else if (count <= 10) {
- s->bl_tree[REPZ_3_10].Freq++;
- } else {
- s->bl_tree[REPZ_11_138].Freq++;
- }
- count = 0; prevlen = curlen;
- if (nextlen == 0) {
- max_count = 138, min_count = 3;
- } else if (curlen == nextlen) {
- max_count = 6, min_count = 3;
- } else {
- max_count = 7, min_count = 4;
- }
- }
-}
-
-/* ===========================================================================
- * Send a literal or distance tree in compressed form, using the codes in
- * bl_tree.
- */
-local void send_tree (s, tree, max_code)
- deflate_state *s;
- ct_data *tree; /* the tree to be scanned */
- int max_code; /* and its largest code of non zero frequency */
-{
- int n; /* iterates over all tree elements */
- int prevlen = -1; /* last emitted length */
- int curlen; /* length of current code */
- int nextlen = tree[0].Len; /* length of next code */
- int count = 0; /* repeat count of the current code */
- int max_count = 7; /* max repeat count */
- int min_count = 4; /* min repeat count */
-
- /* tree[max_code+1].Len = -1; */ /* guard already set */
- if (nextlen == 0) max_count = 138, min_count = 3;
-
- for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
- if (++count < max_count && curlen == nextlen) {
- continue;
- } else if (count < min_count) {
- do { send_code(s, curlen, s->bl_tree); } while (--count != 0);
-
- } else if (curlen != 0) {
- if (curlen != prevlen) {
- send_code(s, curlen, s->bl_tree); count--;
- }
- Assert(count >= 3 && count <= 6, " 3_6?");
- send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
-
- } else if (count <= 10) {
- send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
-
- } else {
- send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
- }
- count = 0; prevlen = curlen;
- if (nextlen == 0) {
- max_count = 138, min_count = 3;
- } else if (curlen == nextlen) {
- max_count = 6, min_count = 3;
- } else {
- max_count = 7, min_count = 4;
- }
- }
-}
-
-/* ===========================================================================
- * Construct the Huffman tree for the bit lengths and return the index in
- * bl_order of the last bit length code to send.
- */
-local int build_bl_tree(s)
- deflate_state *s;
-{
- int max_blindex; /* index of last bit length code of non zero freq */
-
- /* Determine the bit length frequencies for literal and distance trees */
- scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
- scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);
-
- /* Build the bit length tree: */
- build_tree(s, (tree_desc *)(&(s->bl_desc)));
- /* opt_len now includes the length of the tree representations, except
- * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
- */
-
- /* Determine the number of bit length codes to send. The pkzip format
- * requires that at least 4 bit length codes be sent. (appnote.txt says
- * 3 but the actual value used is 4.)
- */
- for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
- if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
- }
- /* Update opt_len to include the bit length tree and counts */
- s->opt_len += 3*(max_blindex+1) + 5+5+4;
- Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
- s->opt_len, s->static_len));
-
- return max_blindex;
-}
-
-/* ===========================================================================
- * Send the header for a block using dynamic Huffman trees: the counts, the
- * lengths of the bit length codes, the literal tree and the distance tree.
- * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
- */
-local void send_all_trees(s, lcodes, dcodes, blcodes)
- deflate_state *s;
- int lcodes, dcodes, blcodes; /* number of codes for each tree */
-{
- int rank; /* index in bl_order */
-
- Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
- Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
- "too many codes");
- Tracev((stderr, "\nbl counts: "));
- send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
- send_bits(s, dcodes-1, 5);
- send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */
- for (rank = 0; rank < blcodes; rank++) {
- Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
- send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
- }
- Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
-
- send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
- Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
-
- send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
- Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
-}
-
-/* ===========================================================================
- * Send a stored block
- */
-void _tr_stored_block(s, buf, stored_len, eof)
- deflate_state *s;
- charf *buf; /* input block */
- ulg stored_len; /* length of input block */
- int eof; /* true if this is the last block for a file */
-{
- send_bits(s, (STORED_BLOCK<<1)+eof, 3); /* send block type */
-#ifdef DEBUG
- s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
- s->compressed_len += (stored_len + 4) << 3;
-#endif
- copy_block(s, buf, (unsigned)stored_len, 1); /* with header */
-}
-
-/* ===========================================================================
- * Send one empty static block to give enough lookahead for inflate.
- * This takes 10 bits, of which 7 may remain in the bit buffer.
- * The current inflate code requires 9 bits of lookahead. If the
- * last two codes for the previous block (real code plus EOB) were coded
- * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
- * the last real code. In this case we send two empty static blocks instead
- * of one. (There are no problems if the previous block is stored or fixed.)
- * To simplify the code, we assume the worst case of last real code encoded
- * on one bit only.
- */
-void _tr_align(s)
- deflate_state *s;
-{
- send_bits(s, STATIC_TREES<<1, 3);
- send_code(s, END_BLOCK, static_ltree);
-#ifdef DEBUG
- s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
-#endif
- bi_flush(s);
- /* Of the 10 bits for the empty block, we have already sent
- * (10 - bi_valid) bits. The lookahead for the last real code (before
- * the EOB of the previous block) was thus at least one plus the length
- * of the EOB plus what we have just sent of the empty static block.
- */
- if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {
- send_bits(s, STATIC_TREES<<1, 3);
- send_code(s, END_BLOCK, static_ltree);
-#ifdef DEBUG
- s->compressed_len += 10L;
-#endif
- bi_flush(s);
- }
- s->last_eob_len = 7;
-}
-
-/* ===========================================================================
- * Determine the best encoding for the current block: dynamic trees, static
- * trees or store, and output the encoded block to the zip file.
- */
-void _tr_flush_block(s, buf, stored_len, eof)
- deflate_state *s;
- charf *buf; /* input block, or NULL if too old */
- ulg stored_len; /* length of input block */
- int eof; /* true if this is the last block for a file */
-{
- ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
- int max_blindex = 0; /* index of last bit length code of non zero freq */
-
- /* Build the Huffman trees unless a stored block is forced */
- if (s->level > 0) {
-
- /* Check if the file is binary or text */
- if (stored_len > 0 && s->strm->data_type == Z_UNKNOWN)
- set_data_type(s);
-
- /* Construct the literal and distance trees */
- build_tree(s, (tree_desc *)(&(s->l_desc)));
- Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
- s->static_len));
-
- build_tree(s, (tree_desc *)(&(s->d_desc)));
- Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
- s->static_len));
- /* At this point, opt_len and static_len are the total bit lengths of
- * the compressed block data, excluding the tree representations.
- */
-
- /* Build the bit length tree for the above two trees, and get the index
- * in bl_order of the last bit length code to send.
- */
- max_blindex = build_bl_tree(s);
-
- /* Determine the best encoding. Compute the block lengths in bytes. */
- opt_lenb = (s->opt_len+3+7)>>3;
- static_lenb = (s->static_len+3+7)>>3;
-
- Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
- opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
- s->last_lit));
-
- if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
-
- } else {
- Assert(buf != (char*)0, "lost buf");
- opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
- }
-
-#ifdef FORCE_STORED
- if (buf != (char*)0) { /* force stored block */
-#else
- if (stored_len+4 <= opt_lenb && buf != (char*)0) {
- /* 4: two words for the lengths */
-#endif
- /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
- * Otherwise we can't have processed more than WSIZE input bytes since
- * the last block flush, because compression would have been
- * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
- * transform a block into a stored block.
- */
- _tr_stored_block(s, buf, stored_len, eof);
-
-#ifdef FORCE_STATIC
- } else if (static_lenb >= 0) { /* force static trees */
-#else
- } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
-#endif
- send_bits(s, (STATIC_TREES<<1)+eof, 3);
- compress_block(s, static_ltree, static_dtree);
-#ifdef DEBUG
- s->compressed_len += 3 + s->static_len;
-#endif
- } else {
- send_bits(s, (DYN_TREES<<1)+eof, 3);
- send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
- max_blindex+1);
- compress_block(s, s->dyn_ltree, s->dyn_dtree);
-#ifdef DEBUG
- s->compressed_len += 3 + s->opt_len;
-#endif
- }
- Assert (s->compressed_len == s->bits_sent, "bad compressed size");
- /* The above check is made mod 2^32, for files larger than 512 MB
- * and uLong implemented on 32 bits.
- */
- init_block(s);
-
- if (eof) {
- bi_windup(s);
-#ifdef DEBUG
- s->compressed_len += 7; /* align on byte boundary */
-#endif
- }
- Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
- s->compressed_len-7*eof));
-}
-
-/* ===========================================================================
- * Save the match info and tally the frequency counts. Return true if
- * the current block must be flushed.
- */
-int _tr_tally (s, dist, lc)
- deflate_state *s;
- unsigned dist; /* distance of matched string */
- unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */
-{
- s->d_buf[s->last_lit] = (ush)dist;
- s->l_buf[s->last_lit++] = (uch)lc;
- if (dist == 0) {
- /* lc is the unmatched char */
- s->dyn_ltree[lc].Freq++;
- } else {
- s->matches++;
- /* Here, lc is the match length - MIN_MATCH */
- dist--; /* dist = match distance - 1 */
- Assert((ush)dist < (ush)MAX_DIST(s) &&
- (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
- (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");
-
- s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
- s->dyn_dtree[d_code(dist)].Freq++;
- }
-
-#ifdef TRUNCATE_BLOCK
- /* Try to guess if it is profitable to stop the current block here */
- if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {
- /* Compute an upper bound for the compressed length */
- ulg out_length = (ulg)s->last_lit*8L;
- ulg in_length = (ulg)((long)s->strstart - s->block_start);
- int dcode;
- for (dcode = 0; dcode < D_CODES; dcode++) {
- out_length += (ulg)s->dyn_dtree[dcode].Freq *
- (5L+extra_dbits[dcode]);
- }
- out_length >>= 3;
- Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
- s->last_lit, in_length, out_length,
- 100L - out_length*100L/in_length));
- if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;
- }
-#endif
- return (s->last_lit == s->lit_bufsize-1);
- /* We avoid equality with lit_bufsize because of wraparound at 64K
- * on 16 bit machines and because stored blocks are restricted to
- * 64K-1 bytes.
- */
-}
-
-/* ===========================================================================
- * Send the block data compressed using the given Huffman trees
- */
-local void compress_block(s, ltree, dtree)
- deflate_state *s;
- const ct_data *ltree; /* literal tree */
- const ct_data *dtree; /* distance tree */
-{
- unsigned dist; /* distance of matched string */
- int lc; /* match length or unmatched char (if dist == 0) */
- unsigned lx = 0; /* running index in l_buf */
- unsigned code; /* the code to send */
- int extra; /* number of extra bits to send */
-
- if (s->last_lit != 0) do {
- dist = s->d_buf[lx];
- lc = s->l_buf[lx++];
- if (dist == 0) {
- send_code(s, lc, ltree); /* send a literal byte */
- Tracecv(isgraph(lc), (stderr," '%c' ", lc));
- } else {
- /* Here, lc is the match length - MIN_MATCH */
- code = _length_code[lc];
- send_code(s, code+LITERALS+1, ltree); /* send the length code */
- extra = extra_lbits[code];
- if (extra != 0) {
- lc -= base_length[code];
- send_bits(s, lc, extra); /* send the extra length bits */
- }
- dist--; /* dist is now the match distance - 1 */
- code = d_code(dist);
- Assert (code < D_CODES, "bad d_code");
-
- send_code(s, code, dtree); /* send the distance code */
- extra = extra_dbits[code];
- if (extra != 0) {
- dist -= base_dist[code];
- send_bits(s, dist, extra); /* send the extra distance bits */
- }
- } /* literal or match pair ? */
-
- /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
- Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
- "pendingBuf overflow");
-
- } while (lx < s->last_lit);
-
- send_code(s, END_BLOCK, ltree);
- s->last_eob_len = ltree[END_BLOCK].Len;
-}
-
-/* ===========================================================================
- * Set the data type to BINARY or TEXT, using a crude approximation:
- * set it to Z_TEXT if all symbols are either printable characters (33 to 255)
- * or white spaces (9 to 13, or 32); or set it to Z_BINARY otherwise.
- * IN assertion: the fields Freq of dyn_ltree are set.
- */
-local void set_data_type(s)
- deflate_state *s;
-{
- int n;
-
- for (n = 0; n < 9; n++)
- if (s->dyn_ltree[n].Freq != 0)
- break;
- if (n == 9)
- for (n = 14; n < 32; n++)
- if (s->dyn_ltree[n].Freq != 0)
- break;
- s->strm->data_type = (n == 32) ? Z_TEXT : Z_BINARY;
-}
-
-/* ===========================================================================
- * Reverse the first len bits of a code, using straightforward code (a faster
- * method would use a table)
- * IN assertion: 1 <= len <= 15
- */
-local unsigned bi_reverse(code, len)
- unsigned code; /* the value to invert */
- int len; /* its bit length */
-{
- register unsigned res = 0;
- do {
- res |= code & 1;
- code >>= 1, res <<= 1;
- } while (--len > 0);
- return res >> 1;
-}
-
-/* ===========================================================================
- * Flush the bit buffer, keeping at most 7 bits in it.
- */
-local void bi_flush(s)
- deflate_state *s;
-{
- if (s->bi_valid == 16) {
- put_short(s, s->bi_buf);
- s->bi_buf = 0;
- s->bi_valid = 0;
- } else if (s->bi_valid >= 8) {
- put_byte(s, (Byte)s->bi_buf);
- s->bi_buf >>= 8;
- s->bi_valid -= 8;
- }
-}
-
-/* ===========================================================================
- * Flush the bit buffer and align the output on a byte boundary
- */
-local void bi_windup(s)
- deflate_state *s;
-{
- if (s->bi_valid > 8) {
- put_short(s, s->bi_buf);
- } else if (s->bi_valid > 0) {
- put_byte(s, (Byte)s->bi_buf);
- }
- s->bi_buf = 0;
- s->bi_valid = 0;
-#ifdef DEBUG
- s->bits_sent = (s->bits_sent+7) & ~7;
-#endif
-}
-
-/* ===========================================================================
- * Copy a stored block, storing first the length and its
- * one's complement if requested.
- */
-local void copy_block(s, buf, len, header)
- deflate_state *s;
- charf *buf; /* the input data */
- unsigned len; /* its length */
- int header; /* true if block header must be written */
-{
- bi_windup(s); /* align on byte boundary */
- s->last_eob_len = 8; /* enough lookahead for inflate */
-
- if (header) {
- put_short(s, (ush)len);
- put_short(s, (ush)~len);
-#ifdef DEBUG
- s->bits_sent += 2*16;
-#endif
- }
-#ifdef DEBUG
- s->bits_sent += (ulg)len<<3;
-#endif
- while (len--) {
- put_byte(s, *buf++);
- }
-}
+++ /dev/null
-/* header created automatically with -DGEN_TREES_H */
-
-local const ct_data static_ltree[L_CODES+2] = {
-{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},
-{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},
-{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},
-{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},
-{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},
-{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},
-{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},
-{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},
-{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},
-{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},
-{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},
-{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},
-{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},
-{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},
-{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},
-{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},
-{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},
-{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},
-{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},
-{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},
-{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},
-{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},
-{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},
-{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},
-{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},
-{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},
-{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},
-{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},
-{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},
-{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},
-{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},
-{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},
-{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},
-{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},
-{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},
-{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},
-{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},
-{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},
-{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},
-{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},
-{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},
-{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},
-{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},
-{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},
-{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},
-{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},
-{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},
-{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},
-{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},
-{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},
-{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},
-{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},
-{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},
-{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},
-{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},
-{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},
-{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},
-{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}
-};
-
-local const ct_data static_dtree[D_CODES] = {
-{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
-{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
-{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
-{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
-{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
-{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
-};
-
-const uch _dist_code[DIST_CODE_LEN] = {
- 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
- 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
-10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
-11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
-13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
-13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,
-18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
-23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
-27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
-};
-
-const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,
-13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
-17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
-19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
-22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
-23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
-};
-
-local const int base_length[LENGTH_CODES] = {
-0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
-64, 80, 96, 112, 128, 160, 192, 224, 0
-};
-
-local const int base_dist[D_CODES] = {
- 0, 1, 2, 3, 4, 6, 8, 12, 16, 24,
- 32, 48, 64, 96, 128, 192, 256, 384, 512, 768,
- 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576
-};
-
+++ /dev/null
-/* uncompr.c -- decompress a memory buffer
- * Copyright (C) 1995-2003 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-
-/* ===========================================================================
- Decompresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total
- size of the destination buffer, which must be large enough to hold the
- entire uncompressed data. (The size of the uncompressed data must have
- been saved previously by the compressor and transmitted to the decompressor
- by some mechanism outside the scope of this compression library.)
- Upon exit, destLen is the actual size of the compressed buffer.
- This function can be used to decompress a whole file at once if the
- input file is mmap'ed.
-
- uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_BUF_ERROR if there was not enough room in the output
- buffer, or Z_DATA_ERROR if the input data was corrupted.
-*/
-int ZEXPORT uncompress (dest, destLen, source, sourceLen)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
-{
- z_stream stream;
- int err;
-
- stream.next_in = source;
- stream.avail_in = (uInt)sourceLen;
- /* Check for source > 64K on 16-bit machine: */
- if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
-
- stream.next_out = dest;
- stream.avail_out = (uInt)*destLen;
- if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
-
- stream.zalloc = (alloc_func)0;
- stream.zfree = (free_func)0;
-
- err = inflateInit(&stream);
- if (err != Z_OK) return err;
-
- err = inflate(&stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- inflateEnd(&stream);
- if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
- return Z_DATA_ERROR;
- return err;
- }
- *destLen = stream.total_out;
-
- err = inflateEnd(&stream);
- return err;
-}
+++ /dev/null
-
- Frequently Asked Questions about ZLIB1.DLL
-
-
-This document describes the design, the rationale, and the usage
-of the official DLL build of zlib, named ZLIB1.DLL. If you have
-general questions about zlib, you should see the file "FAQ" found
-in the zlib distribution, or at the following location:
- http://www.gzip.org/zlib/zlib_faq.html
-
-
- 1. What is ZLIB1.DLL, and how can I get it?
-
- - ZLIB1.DLL is the official build of zlib as a DLL.
- (Please remark the character '1' in the name.)
-
- Pointers to a precompiled ZLIB1.DLL can be found in the zlib
- web site at:
- http://www.zlib.org/
-
- Applications that link to ZLIB1.DLL can rely on the following
- specification:
-
- * The exported symbols are exclusively defined in the source
- files "zlib.h" and "zlib.def", found in an official zlib
- source distribution.
- * The symbols are exported by name, not by ordinal.
- * The exported names are undecorated.
- * The calling convention of functions is "C" (CDECL).
- * The ZLIB1.DLL binary is linked to MSVCRT.DLL.
-
- The archive in which ZLIB1.DLL is bundled contains compiled
- test programs that must run with a valid build of ZLIB1.DLL.
- It is recommended to download the prebuilt DLL from the zlib
- web site, instead of building it yourself, to avoid potential
- incompatibilities that could be introduced by your compiler
- and build settings. If you do build the DLL yourself, please
- make sure that it complies with all the above requirements,
- and it runs with the precompiled test programs, bundled with
- the original ZLIB1.DLL distribution.
-
- If, for any reason, you need to build an incompatible DLL,
- please use a different file name.
-
-
- 2. Why did you change the name of the DLL to ZLIB1.DLL?
- What happened to the old ZLIB.DLL?
-
- - The old ZLIB.DLL, built from zlib-1.1.4 or earlier, required
- compilation settings that were incompatible to those used by
- a static build. The DLL settings were supposed to be enabled
- by defining the macro ZLIB_DLL, before including "zlib.h".
- Incorrect handling of this macro was silently accepted at
- build time, resulting in two major problems:
-
- * ZLIB_DLL was missing from the old makefile. When building
- the DLL, not all people added it to the build options. In
- consequence, incompatible incarnations of ZLIB.DLL started
- to circulate around the net.
-
- * When switching from using the static library to using the
- DLL, applications had to define the ZLIB_DLL macro and
- to recompile all the sources that contained calls to zlib
- functions. Failure to do so resulted in creating binaries
- that were unable to run with the official ZLIB.DLL build.
-
- The only possible solution that we could foresee was to make
- a binary-incompatible change in the DLL interface, in order to
- remove the dependency on the ZLIB_DLL macro, and to release
- the new DLL under a different name.
-
- We chose the name ZLIB1.DLL, where '1' indicates the major
- zlib version number. We hope that we will not have to break
- the binary compatibility again, at least not as long as the
- zlib-1.x series will last.
-
- There is still a ZLIB_DLL macro, that can trigger a more
- efficient build and use of the DLL, but compatibility no
- longer dependents on it.
-
-
- 3. Can I build ZLIB.DLL from the new zlib sources, and replace
- an old ZLIB.DLL, that was built from zlib-1.1.4 or earlier?
-
- - In principle, you can do it by assigning calling convention
- keywords to the macros ZEXPORT and ZEXPORTVA. In practice,
- it depends on what you mean by "an old ZLIB.DLL", because the
- old DLL exists in several mutually-incompatible versions.
- You have to find out first what kind of calling convention is
- being used in your particular ZLIB.DLL build, and to use the
- same one in the new build. If you don't know what this is all
- about, you might be better off if you would just leave the old
- DLL intact.
-
-
- 4. Can I compile my application using the new zlib interface, and
- link it to an old ZLIB.DLL, that was built from zlib-1.1.4 or
- earlier?
-
- - The official answer is "no"; the real answer depends again on
- what kind of ZLIB.DLL you have. Even if you are lucky, this
- course of action is unreliable.
-
- If you rebuild your application and you intend to use a newer
- version of zlib (post- 1.1.4), it is strongly recommended to
- link it to the new ZLIB1.DLL.
-
-
- 5. Why are the zlib symbols exported by name, and not by ordinal?
-
- - Although exporting symbols by ordinal is a little faster, it
- is risky. Any single glitch in the maintenance or use of the
- DEF file that contains the ordinals can result in incompatible
- builds and frustrating crashes. Simply put, the benefits of
- exporting symbols by ordinal do not justify the risks.
-
- Technically, it should be possible to maintain ordinals in
- the DEF file, and still export the symbols by name. Ordinals
- exist in every DLL, and even if the dynamic linking performed
- at the DLL startup is searching for names, ordinals serve as
- hints, for a faster name lookup. However, if the DEF file
- contains ordinals, the Microsoft linker automatically builds
- an implib that will cause the executables linked to it to use
- those ordinals, and not the names. It is interesting to
- notice that the GNU linker for Win32 does not suffer from this
- problem.
-
- It is possible to avoid the DEF file if the exported symbols
- are accompanied by a "__declspec(dllexport)" attribute in the
- source files. You can do this in zlib by predefining the
- ZLIB_DLL macro.
-
-
- 6. I see that the ZLIB1.DLL functions use the "C" (CDECL) calling
- convention. Why not use the STDCALL convention?
- STDCALL is the standard convention in Win32, and I need it in
- my Visual Basic project!
-
- (For readability, we use CDECL to refer to the convention
- triggered by the "__cdecl" keyword, STDCALL to refer to
- the convention triggered by "__stdcall", and FASTCALL to
- refer to the convention triggered by "__fastcall".)
-
- - Most of the native Windows API functions (without varargs) use
- indeed the WINAPI convention (which translates to STDCALL in
- Win32), but the standard C functions use CDECL. If a user
- application is intrinsically tied to the Windows API (e.g.
- it calls native Windows API functions such as CreateFile()),
- sometimes it makes sense to decorate its own functions with
- WINAPI. But if ANSI C or POSIX portability is a goal (e.g.
- it calls standard C functions such as fopen()), it is not a
- sound decision to request the inclusion of <windows.h>, or to
- use non-ANSI constructs, for the sole purpose to make the user
- functions STDCALL-able.
-
- The functionality offered by zlib is not in the category of
- "Windows functionality", but is more like "C functionality".
-
- Technically, STDCALL is not bad; in fact, it is slightly
- faster than CDECL, and it works with variable-argument
- functions, just like CDECL. It is unfortunate that, in spite
- of using STDCALL in the Windows API, it is not the default
- convention used by the C compilers that run under Windows.
- The roots of the problem reside deep inside the unsafety of
- the K&R-style function prototypes, where the argument types
- are not specified; but that is another story for another day.
-
- The remaining fact is that CDECL is the default convention.
- Even if an explicit convention is hard-coded into the function
- prototypes inside C headers, problems may appear. The
- necessity to expose the convention in users' callbacks is one
- of these problems.
-
- The calling convention issues are also important when using
- zlib in other programming languages. Some of them, like Ada
- (GNAT) and Fortran (GNU G77), have C bindings implemented
- initially on Unix, and relying on the C calling convention.
- On the other hand, the pre- .NET versions of Microsoft Visual
- Basic require STDCALL, while Borland Delphi prefers, although
- it does not require, FASTCALL.
-
- In fairness to all possible uses of zlib outside the C
- programming language, we choose the default "C" convention.
- Anyone interested in different bindings or conventions is
- encouraged to maintain specialized projects. The "contrib/"
- directory from the zlib distribution already holds a couple
- of foreign bindings, such as Ada, C++, and Delphi.
-
-
- 7. I need a DLL for my Visual Basic project. What can I do?
-
- - Define the ZLIB_WINAPI macro before including "zlib.h", when
- building both the DLL and the user application (except that
- you don't need to define anything when using the DLL in Visual
- Basic). The ZLIB_WINAPI macro will switch on the WINAPI
- (STDCALL) convention. The name of this DLL must be different
- than the official ZLIB1.DLL.
-
- Gilles Vollant has contributed a build named ZLIBWAPI.DLL,
- with the ZLIB_WINAPI macro turned on, and with the minizip
- functionality built in. For more information, please read
- the notes inside "contrib/vstudio/readme.txt", found in the
- zlib distribution.
-
-
- 8. I need to use zlib in my Microsoft .NET project. What can I
- do?
-
- - Henrik Ravn has contributed a .NET wrapper around zlib. Look
- into contrib/dotzlib/, inside the zlib distribution.
-
-
- 9. If my application uses ZLIB1.DLL, should I link it to
- MSVCRT.DLL? Why?
-
- - It is not required, but it is recommended to link your
- application to MSVCRT.DLL, if it uses ZLIB1.DLL.
-
- The executables (.EXE, .DLL, etc.) that are involved in the
- same process and are using the C run-time library (i.e. they
- are calling standard C functions), must link to the same
- library. There are several libraries in the Win32 system:
- CRTDLL.DLL, MSVCRT.DLL, the static C libraries, etc.
- Since ZLIB1.DLL is linked to MSVCRT.DLL, the executables that
- depend on it should also be linked to MSVCRT.DLL.
-
-
-10. Why are you saying that ZLIB1.DLL and my application should
- be linked to the same C run-time (CRT) library? I linked my
- application and my DLLs to different C libraries (e.g. my
- application to a static library, and my DLLs to MSVCRT.DLL),
- and everything works fine.
-
- - If a user library invokes only pure Win32 API (accessible via
- <windows.h> and the related headers), its DLL build will work
- in any context. But if this library invokes standard C API,
- things get more complicated.
-
- There is a single Win32 library in a Win32 system. Every
- function in this library resides in a single DLL module, that
- is safe to call from anywhere. On the other hand, there are
- multiple versions of the C library, and each of them has its
- own separate internal state. Standalone executables and user
- DLLs that call standard C functions must link to a C run-time
- (CRT) library, be it static or shared (DLL). Intermixing
- occurs when an executable (not necessarily standalone) and a
- DLL are linked to different CRTs, and both are running in the
- same process.
-
- Intermixing multiple CRTs is possible, as long as their
- internal states are kept intact. The Microsoft Knowledge Base
- articles KB94248 "HOWTO: Use the C Run-Time" and KB140584
- "HOWTO: Link with the Correct C Run-Time (CRT) Library"
- mention the potential problems raised by intermixing.
-
- If intermixing works for you, it's because your application
- and DLLs are avoiding the corruption of each of the CRTs'
- internal states, maybe by careful design, or maybe by fortune.
-
- Also note that linking ZLIB1.DLL to non-Microsoft CRTs, such
- as those provided by Borland, raises similar problems.
-
-
-11. Why are you linking ZLIB1.DLL to MSVCRT.DLL?
-
- - MSVCRT.DLL exists on every Windows 95 with a new service pack
- installed, or with Microsoft Internet Explorer 4 or later, and
- on all other Windows 4.x or later (Windows 98, Windows NT 4,
- or later). It is freely distributable; if not present in the
- system, it can be downloaded from Microsoft or from other
- software provider for free.
-
- The fact that MSVCRT.DLL does not exist on a virgin Windows 95
- is not so problematic. Windows 95 is scarcely found nowadays,
- Microsoft ended its support a long time ago, and many recent
- applications from various vendors, including Microsoft, do not
- even run on it. Furthermore, no serious user should run
- Windows 95 without a proper update installed.
-
-
-12. Why are you not linking ZLIB1.DLL to
- <<my favorite C run-time library>> ?
-
- - We considered and abandoned the following alternatives:
-
- * Linking ZLIB1.DLL to a static C library (LIBC.LIB, or
- LIBCMT.LIB) is not a good option. People are using the DLL
- mainly to save disk space. If you are linking your program
- to a static C library, you may as well consider linking zlib
- in statically, too.
-
- * Linking ZLIB1.DLL to CRTDLL.DLL looks appealing, because
- CRTDLL.DLL is present on every Win32 installation.
- Unfortunately, it has a series of problems: it does not
- work properly with Microsoft's C++ libraries, it does not
- provide support for 64-bit file offsets, (and so on...),
- and Microsoft discontinued its support a long time ago.
-
- * Linking ZLIB1.DLL to MSVCR70.DLL or MSVCR71.DLL, supplied
- with the Microsoft .NET platform, and Visual C++ 7.0/7.1,
- raises problems related to the status of ZLIB1.DLL as a
- system component. According to the Microsoft Knowledge Base
- article KB326922 "INFO: Redistribution of the Shared C
- Runtime Component in Visual C++ .NET", MSVCR70.DLL and
- MSVCR71.DLL are not supposed to function as system DLLs,
- because they may clash with MSVCRT.DLL. Instead, the
- application's installer is supposed to put these DLLs
- (if needed) in the application's private directory.
- If ZLIB1.DLL depends on a non-system runtime, it cannot
- function as a redistributable system component.
-
- * Linking ZLIB1.DLL to non-Microsoft runtimes, such as
- Borland's, or Cygwin's, raises problems related to the
- reliable presence of these runtimes on Win32 systems.
- It's easier to let the DLL build of zlib up to the people
- who distribute these runtimes, and who may proceed as
- explained in the answer to Question 14.
-
-
-13. If ZLIB1.DLL cannot be linked to MSVCR70.DLL or MSVCR71.DLL,
- how can I build/use ZLIB1.DLL in Microsoft Visual C++ 7.0
- (Visual Studio .NET) or newer?
-
- - Due to the problems explained in the Microsoft Knowledge Base
- article KB326922 (see the previous answer), the C runtime that
- comes with the VC7 environment is no longer considered a
- system component. That is, it should not be assumed that this
- runtime exists, or may be installed in a system directory.
- Since ZLIB1.DLL is supposed to be a system component, it may
- not depend on a non-system component.
-
- In order to link ZLIB1.DLL and your application to MSVCRT.DLL
- in VC7, you need the library of Visual C++ 6.0 or older. If
- you don't have this library at hand, it's probably best not to
- use ZLIB1.DLL.
-
- We are hoping that, in the future, Microsoft will provide a
- way to build applications linked to a proper system runtime,
- from the Visual C++ environment. Until then, you have a
- couple of alternatives, such as linking zlib in statically.
- If your application requires dynamic linking, you may proceed
- as explained in the answer to Question 14.
-
-
-14. I need to link my own DLL build to a CRT different than
- MSVCRT.DLL. What can I do?
-
- - Feel free to rebuild the DLL from the zlib sources, and link
- it the way you want. You should, however, clearly state that
- your build is unofficial. You should give it a different file
- name, and/or install it in a private directory that can be
- accessed by your application only, and is not visible to the
- others (e.g. it's not in the SYSTEM or the SYSTEM32 directory,
- and it's not in the PATH). Otherwise, your build may clash
- with applications that link to the official build.
-
- For example, in Cygwin, zlib is linked to the Cygwin runtime
- CYGWIN1.DLL, and it is distributed under the name CYGZ.DLL.
-
-
-15. May I include additional pieces of code that I find useful,
- link them in ZLIB1.DLL, and export them?
-
- - No. A legitimate build of ZLIB1.DLL must not include code
- that does not originate from the official zlib source code.
- But you can make your own private DLL build, under a different
- file name, as suggested in the previous answer.
-
- For example, zlib is a part of the VCL library, distributed
- with Borland Delphi and C++ Builder. The DLL build of VCL
- is a redistributable file, named VCLxx.DLL.
-
-
-16. May I remove some functionality out of ZLIB1.DLL, by enabling
- macros like NO_GZCOMPRESS or NO_GZIP at compile time?
-
- - No. A legitimate build of ZLIB1.DLL must provide the complete
- zlib functionality, as implemented in the official zlib source
- code. But you can make your own private DLL build, under a
- different file name, as suggested in the previous answer.
-
-
-17. I made my own ZLIB1.DLL build. Can I test it for compliance?
-
- - We prefer that you download the official DLL from the zlib
- web site. If you need something peculiar from this DLL, you
- can send your suggestion to the zlib mailing list.
-
- However, in case you do rebuild the DLL yourself, you can run
- it with the test programs found in the DLL distribution.
- Running these test programs is not a guarantee of compliance,
- but a failure can imply a detected problem.
-
-**
-
-This document is written and maintained by
-Cosmin Truta <cosmint@cs.ubbcluj.ro>
+++ /dev/null
-# Makefile for zlib
-# Borland C++ for Win32
-#
-# Updated for zlib 1.2.x by Cosmin Truta, 11-Mar-2003
-# Last updated: 28-Aug-2003
-#
-# Usage:
-# make -f win32/Makefile.bor
-# make -f win32/Makefile.bor LOCAL_ZLIB=-DASMV OBJA=match.obj OBJPA=+match.obj
-
-# ------------ Borland C++ ------------
-
-# Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7)
-# should be added to the environment via "set LOCAL_ZLIB=-DFOO" or
-# added to the declaration of LOC here:
-LOC = $(LOCAL_ZLIB)
-
-CC = bcc32
-AS = bcc32
-LD = bcc32
-AR = tlib
-CFLAGS = -a -d -k- -O2 $(LOC)
-ASFLAGS = $(LOC)
-LDFLAGS = $(LOC)
-
-
-# variables
-ZLIB_LIB = zlib.lib
-
-OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj
-OBJ2 = inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-#OBJA =
-OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzio.obj+infback.obj
-OBJP2 = +inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
-#OBJPA=
-
-
-# targets
-all: $(ZLIB_LIB) example.exe minigzip.exe
-
-.c.obj:
- $(CC) -c $(CFLAGS) $<
-
-.asm.obj:
- $(AS) -c $(ASFLAGS) $<
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
-
-minigzip.obj: minigzip.c zlib.h zconf.h
-
-
-# For the sake of the old Borland make,
-# the command line is cut to fit in the MS-DOS 128 byte limit:
-$(ZLIB_LIB): $(OBJ1) $(OBJ2) $(OBJA)
- -del $(ZLIB_LIB)
- $(AR) $(ZLIB_LIB) $(OBJP1)
- $(AR) $(ZLIB_LIB) $(OBJP2)
- $(AR) $(ZLIB_LIB) $(OBJPA)
-
-
-# testing
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-example.exe: example.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
-
-minigzip.exe: minigzip.obj $(ZLIB_LIB)
- $(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
-
-
-# cleanup
-clean:
- -del *.obj
- -del *.lib
- -del *.exe
- -del *.tds
- -del zlib.bak
- -del foo.gz
+++ /dev/null
-# Makefile for zlib. Modified for emx/rsxnt by Chr. Spieler, 6/16/98.
-# Copyright (C) 1995-1998 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile, or to compile and test, type:
-#
-# make -fmakefile.emx; make test -fmakefile.emx
-#
-
-CC=gcc -Zwin32
-
-#CFLAGS=-MMD -O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-MMD -g -DDEBUG
-CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
- -Wstrict-prototypes -Wmissing-prototypes
-
-# If cp.exe is available, replace "copy /Y" with "cp -fp" .
-CP=copy /Y
-# If gnu install.exe is available, replace $(CP) with ginstall.
-INSTALL=$(CP)
-# The default value of RM is "rm -f." If "rm.exe" is found, comment out:
-RM=del
-LDLIBS=-L. -lzlib
-LD=$(CC) -s -o
-LDSHARED=$(CC)
-
-INCL=zlib.h zconf.h
-LIBS=zlib.a
-
-AR=ar rcs
-
-prefix=/usr/local
-exec_prefix = $(prefix)
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
- zutil.o inflate.o infback.o inftrees.o inffast.o
-
-TEST_OBJS = example.o minigzip.o
-
-all: example.exe minigzip.exe
-
-test: all
- ./example
- echo hello world | .\minigzip | .\minigzip -d
-
-%.o : %.c
- $(CC) $(CFLAGS) -c $< -o $@
-
-zlib.a: $(OBJS)
- $(AR) $@ $(OBJS)
-
-%.exe : %.o $(LIBS)
- $(LD) $@ $< $(LDLIBS)
-
-
-.PHONY : clean
-
-clean:
- $(RM) *.d
- $(RM) *.o
- $(RM) *.exe
- $(RM) zlib.a
- $(RM) foo.gz
-
-DEPS := $(wildcard *.d)
-ifneq ($(DEPS),)
-include $(DEPS)
-endif
+++ /dev/null
-# Makefile for zlib, derived from Makefile.dj2.
-# Modified for mingw32 by C. Spieler, 6/16/98.
-# Updated for zlib 1.2.x by Christian Spieler and Cosmin Truta, Mar-2003.
-# Last updated: 1-Aug-2003.
-# Tested under Cygwin and MinGW.
-
-# Copyright (C) 1995-2003 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile, or to compile and test, type:
-#
-# make -fmakefile.gcc; make test testdll -fmakefile.gcc
-#
-# To use the asm code, type:
-# cp contrib/asm?86/match.S ./match.S
-# make LOC=-DASMV OBJA=match.o -fmakefile.gcc
-#
-# To install libz.a, zconf.h and zlib.h in the system directories, type:
-#
-# make install -fmakefile.gcc
-
-# Note:
-# If the platform is *not* MinGW (e.g. it is Cygwin or UWIN),
-# the DLL name should be changed from "zlib1.dll".
-
-STATICLIB = libz.a
-SHAREDLIB = zlib1.dll
-IMPLIB = libzdll.a
-
-#LOC = -DASMV
-#LOC = -DDEBUG -g
-
-CC = gcc
-CFLAGS = $(LOC) -O3 -Wall
-
-AS = $(CC)
-ASFLAGS = $(LOC) -Wall
-
-LD = $(CC)
-LDFLAGS = $(LOC) -s
-
-AR = ar
-ARFLAGS = rcs
-
-RC = windres
-RCFLAGS = --define GCC_WINDRES
-
-CP = cp -fp
-# If GNU install is available, replace $(CP) with install.
-INSTALL = $(CP)
-RM = rm -f
-
-prefix = /usr/local
-exec_prefix = $(prefix)
-
-OBJS = adler32.o compress.o crc32.o deflate.o gzio.o infback.o \
- inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o
-OBJA =
-
-all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) example minigzip example_d minigzip_d
-
-test: example minigzip
- ./example
- echo hello world | ./minigzip | ./minigzip -d
-
-testdll: example_d minigzip_d
- ./example_d
- echo hello world | ./minigzip_d | ./minigzip_d -d
-
-.c.o:
- $(CC) $(CFLAGS) -c -o $@ $<
-
-.S.o:
- $(AS) $(ASFLAGS) -c -o $@ $<
-
-$(STATICLIB): $(OBJS) $(OBJA)
- $(AR) $(ARFLAGS) $@ $(OBJS) $(OBJA)
-
-$(IMPLIB): $(SHAREDLIB)
-
-$(SHAREDLIB): win32/zlib.def $(OBJS) $(OBJA) zlibrc.o
- dllwrap --driver-name $(CC) --def win32/zlib.def \
- --implib $(IMPLIB) -o $@ $(OBJS) $(OBJA) zlibrc.o
- strip $@
-
-example: example.o $(STATICLIB)
- $(LD) $(LDFLAGS) -o $@ example.o $(STATICLIB)
-
-minigzip: minigzip.o $(STATICLIB)
- $(LD) $(LDFLAGS) -o $@ minigzip.o $(STATICLIB)
-
-example_d: example.o $(IMPLIB)
- $(LD) $(LDFLAGS) -o $@ example.o $(IMPLIB)
-
-minigzip_d: minigzip.o $(IMPLIB)
- $(LD) $(LDFLAGS) -o $@ minigzip.o $(IMPLIB)
-
-zlibrc.o: win32/zlib1.rc
- $(RC) $(RCFLAGS) -o $@ win32/zlib1.rc
-
-
-# INCLUDE_PATH and LIBRARY_PATH must be set.
-
-.PHONY: install uninstall clean
-
-install: zlib.h zconf.h $(LIB)
- -@if not exist $(INCLUDE_PATH)/nul mkdir $(INCLUDE_PATH)
- -@if not exist $(LIBRARY_PATH)/nul mkdir $(LIBRARY_PATH)
- -$(INSTALL) zlib.h $(INCLUDE_PATH)
- -$(INSTALL) zconf.h $(INCLUDE_PATH)
- -$(INSTALL) $(STATICLIB) $(LIBRARY_PATH)
- -$(INSTALL) $(IMPLIB) $(LIBRARY_PATH)
-
-uninstall:
- -$(RM) $(INCLUDE_PATH)/zlib.h
- -$(RM) $(INCLUDE_PATH)/zconf.h
- -$(RM) $(LIBRARY_PATH)/$(STATICLIB)
- -$(RM) $(LIBRARY_PATH)/$(IMPLIB)
-
-clean:
- -$(RM) $(STATICLIB)
- -$(RM) $(SHAREDLIB)
- -$(RM) $(IMPLIB)
- -$(RM) *.o
- -$(RM) *.exe
- -$(RM) foo.gz
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: crc32.h zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-minigzip.o: zlib.h zconf.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h
+++ /dev/null
-# Makefile for zlib -- Microsoft (Visual) C
-#
-# Authors:
-# Cosmin Truta, 11-Mar-2003
-# Christian Spieler, 19-Mar-2003
-#
-# Last updated:
-# Cosmin Truta, 27-Aug-2003
-#
-# Usage:
-# nmake -f win32/Makefile.msc (standard build)
-# nmake -f win32/Makefile.msc LOC=-DFOO (nonstandard build)
-# nmake -f win32/Makefile.msc LOC=-DASMV OBJA=match.obj (use ASM code)
-
-
-# optional build flags
-LOC =
-
-
-# variables
-STATICLIB = zlib.lib
-SHAREDLIB = zlib1.dll
-IMPLIB = zdll.lib
-
-CC = cl
-AS = ml
-LD = link
-AR = lib
-RC = rc
-CFLAGS = -nologo -MD -O2 $(LOC)
-ASFLAGS = -coff
-LDFLAGS = -nologo -release
-ARFLAGS = -nologo
-RCFLAGS = /dWIN32 /r
-
-OBJS = adler32.obj compress.obj crc32.obj deflate.obj gzio.obj infback.obj \
- inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
-OBJA =
-
-
-# targets
-all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) \
- example.exe minigzip.exe example_d.exe minigzip_d.exe
-
-$(STATICLIB): $(OBJS) $(OBJA)
- $(AR) $(ARFLAGS) -out:$@ $(OBJS) $(OBJA)
-
-$(IMPLIB): $(SHAREDLIB)
-
-$(SHAREDLIB): win32/zlib.def $(OBJS) $(OBJA) zlib1.res
- $(LD) $(LDFLAGS) -def:win32/zlib.def -dll -implib:$(IMPLIB) \
- -out:$@ $(OBJS) $(OBJA) zlib1.res
-
-example.exe: example.obj $(STATICLIB)
- $(LD) $(LDFLAGS) example.obj $(STATICLIB)
-
-minigzip.exe: minigzip.obj $(STATICLIB)
- $(LD) $(LDFLAGS) minigzip.obj $(STATICLIB)
-
-example_d.exe: example.obj $(IMPLIB)
- $(LD) $(LDFLAGS) -out:$@ example.obj $(IMPLIB)
-
-minigzip_d.exe: minigzip.obj $(IMPLIB)
- $(LD) $(LDFLAGS) -out:$@ minigzip.obj $(IMPLIB)
-
-.c.obj:
- $(CC) -c $(CFLAGS) $<
-
-.asm.obj:
- $(AS) -c $(ASFLAGS) $<
-
-adler32.obj: adler32.c zlib.h zconf.h
-
-compress.obj: compress.c zlib.h zconf.h
-
-crc32.obj: crc32.c zlib.h zconf.h crc32.h
-
-deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
-
-gzio.obj: gzio.c zutil.h zlib.h zconf.h
-
-infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h
-
-inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
- inffast.h inffixed.h
-
-inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
-
-trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
-
-uncompr.obj: uncompr.c zlib.h zconf.h
-
-zutil.obj: zutil.c zutil.h zlib.h zconf.h
-
-example.obj: example.c zlib.h zconf.h
-
-minigzip.obj: minigzip.c zlib.h zconf.h
-
-zlib1.res: win32/zlib1.rc
- $(RC) $(RCFLAGS) /fo$@ win32/zlib1.rc
-
-
-# testing
-test: example.exe minigzip.exe
- example
- echo hello world | minigzip | minigzip -d
-
-testdll: example_d.exe minigzip_d.exe
- example_d
- echo hello world | minigzip_d | minigzip_d -d
-
-
-# cleanup
-clean:
- -del $(STATICLIB)
- -del $(SHAREDLIB)
- -del $(IMPLIB)
- -del *.obj
- -del *.res
- -del *.exp
- -del *.exe
- -del foo.gz
+++ /dev/null
-
-To build zlib using the Microsoft Visual C++ environment,
-use the appropriate project from the projects/ directory.
+++ /dev/null
-LIBRARY
-; zlib data compression library
-
-EXPORTS
-; basic functions
- zlibVersion
- deflate
- deflateEnd
- inflate
- inflateEnd
-; advanced functions
- deflateSetDictionary
- deflateCopy
- deflateReset
- deflateParams
- deflateBound
- deflatePrime
- inflateSetDictionary
- inflateSync
- inflateCopy
- inflateReset
- inflateBack
- inflateBackEnd
- zlibCompileFlags
-; utility functions
- compress
- compress2
- compressBound
- uncompress
- gzopen
- gzdopen
- gzsetparams
- gzread
- gzwrite
- gzprintf
- gzputs
- gzgets
- gzputc
- gzgetc
- gzungetc
- gzflush
- gzseek
- gzrewind
- gztell
- gzeof
- gzclose
- gzerror
- gzclearerr
-; checksum functions
- adler32
- crc32
-; various hacks, don't look :)
- deflateInit_
- deflateInit2_
- inflateInit_
- inflateInit2_
- inflateBackInit_
- inflateSyncPoint
- get_crc_table
- zError
+++ /dev/null
-#include <windows.h>
-
-#ifdef GCC_WINDRES
-VS_VERSION_INFO VERSIONINFO
-#else
-VS_VERSION_INFO VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE
-#endif
- FILEVERSION 1,2,2,0
- PRODUCTVERSION 1,2,2,0
- FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
-#ifdef _DEBUG
- FILEFLAGS 1
-#else
- FILEFLAGS 0
-#endif
- FILEOS VOS_DOS_WINDOWS32
- FILETYPE VFT_DLL
- FILESUBTYPE 0 // not used
-BEGIN
- BLOCK "StringFileInfo"
- BEGIN
- BLOCK "040904E4"
- //language ID = U.S. English, char set = Windows, Multilingual
- BEGIN
- VALUE "FileDescription", "zlib data compression library\0"
- VALUE "FileVersion", "1.2.3\0"
- VALUE "InternalName", "zlib1.dll\0"
- VALUE "LegalCopyright", "(C) 1995-2004 Jean-loup Gailly & Mark Adler\0"
- VALUE "OriginalFilename", "zlib1.dll\0"
- VALUE "ProductName", "zlib\0"
- VALUE "ProductVersion", "1.2.3\0"
- VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
- END
- END
- BLOCK "VarFileInfo"
- BEGIN
- VALUE "Translation", 0x0409, 1252
- END
-END
+++ /dev/null
-#!/usr/bin/env python
-
-def configure(conf):
- version_check='''
- #if (ZLIB_VERNUM >= 0x1230)
- #else
- #error "ZLIB_VERNUM < 0x1230"
- #endif
- z_stream *z;
- inflateInit2(z, -15);
- '''
-
- if conf.CHECK_BUNDLED_SYSTEM('z', minversion='1.2.3', pkg='zlib',
- checkfunctions='zlibVersion',
- headers='zlib.h',
- checkcode=version_check,
- implied_deps='replace'):
- conf.define('USING_SYSTEM_ZLIB', 1)
-
-def build(bld):
- if bld.CONFIG_SET('USING_SYSTEM_ZLIB'):
- return
-
- bld.SAMBA_LIBRARY('z',
- private_library=True,
- deps='replace',
- allow_warnings=True,
- source='''adler32.c compress.c crc32.c gzio.c
- uncompr.c deflate.c trees.c zutil.c
- inflate.c infback.c inftrees.c inffast.c''')
+++ /dev/null
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "replace.h"
-#define Z_PREFIX
-
-#ifndef ZCONF_H
-#define ZCONF_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- */
-#ifdef Z_PREFIX
-# define deflateInit_ z_deflateInit_
-# define deflate z_deflate
-# define deflateEnd z_deflateEnd
-# define inflateInit_ z_inflateInit_
-# define inflate z_inflate
-# define inflateEnd z_inflateEnd
-# define deflateInit2_ z_deflateInit2_
-# define deflateSetDictionary z_deflateSetDictionary
-# define deflateCopy z_deflateCopy
-# define deflateReset z_deflateReset
-# define deflateParams z_deflateParams
-# define deflateBound z_deflateBound
-# define deflatePrime z_deflatePrime
-# define inflateInit2_ z_inflateInit2_
-# define inflateSetDictionary z_inflateSetDictionary
-# define inflateSync z_inflateSync
-# define inflateSyncPoint z_inflateSyncPoint
-# define inflateCopy z_inflateCopy
-# define inflateReset z_inflateReset
-# define inflateBack z_inflateBack
-# define inflateBackEnd z_inflateBackEnd
-# define compress z_compress
-# define compress2 z_compress2
-# define compressBound z_compressBound
-# define uncompress z_uncompress
-# define adler32 z_adler32
-# define crc32 z_crc32
-# define get_crc_table z_get_crc_table
-# define zError z_zError
-
-# define alloc_func z_alloc_func
-# define free_func z_free_func
-# define in_func z_in_func
-# define out_func z_out_func
-# define Byte z_Byte
-# define uInt z_uInt
-# define uLong z_uLong
-# define Bytef z_Bytef
-# define charf z_charf
-# define intf z_intf
-# define uIntf z_uIntf
-# define uLongf z_uLongf
-# define voidpf z_voidpf
-# define voidp z_voidp
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-# define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-# define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-# define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-# ifndef WIN32
-# define WIN32
-# endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-# ifndef SYS16BIT
-# define SYS16BIT
-# endif
-# endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-# define MAXSEG_64K
-#endif
-#ifdef MSDOS
-# define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-# ifndef STDC
-# define STDC
-# endif
-# if __STDC_VERSION__ >= 199901L
-# ifndef STDC99
-# define STDC99
-# endif
-# endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-# define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
-# define STDC
-#endif
-
-#ifndef STDC
-# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-# define const /* note: need a more gentle solution here */
-# endif
-#endif
-
-/* Some Mac compilers merge all .h files incorrectly: */
-#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
-# define NO_DUMMY_DECL
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-# ifdef MAXSEG_64K
-# define MAX_MEM_LEVEL 8
-# else
-# define MAX_MEM_LEVEL 9
-# endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-# define MAX_WBITS 15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
- (1 << (windowBits+2)) + (1 << (memLevel+9))
- that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
- make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
- The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus a few kilobytes
- for small objects.
-*/
-
- /* Type declarations */
-
-#ifndef OF /* function prototypes */
-# ifdef STDC
-# define OF(args) args
-# else
-# define OF(args) ()
-# endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-# if defined(M_I86SM) || defined(M_I86MM)
- /* MSC small or medium model */
-# define SMALL_MEDIUM
-# ifdef _MSC_VER
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-# if (defined(__SMALL__) || defined(__MEDIUM__))
- /* Turbo C small or medium model */
-# define SMALL_MEDIUM
-# ifdef __BORLANDC__
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
- /* If building or using zlib as a DLL, define ZLIB_DLL.
- * This is not mandatory, but it offers a little performance increase.
- */
-# ifdef ZLIB_DLL
-# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-# ifdef ZLIB_INTERNAL
-# define ZEXTERN extern __declspec(dllexport)
-# else
-# define ZEXTERN extern __declspec(dllimport)
-# endif
-# endif
-# endif /* ZLIB_DLL */
- /* If building or using zlib with the WINAPI/WINAPIV calling convention,
- * define ZLIB_WINAPI.
- * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
- */
-# ifdef ZLIB_WINAPI
-# ifdef FAR
-# undef FAR
-# endif
-# include <windows.h>
- /* No need for _export, use ZLIB.DEF instead. */
- /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-# define ZEXPORT WINAPI
-# ifdef WIN32
-# define ZEXPORTVA WINAPIV
-# else
-# define ZEXPORTVA FAR CDECL
-# endif
-# endif
-#endif
-
-#if defined (__BEOS__)
-# ifdef ZLIB_DLL
-# ifdef ZLIB_INTERNAL
-# define ZEXPORT __declspec(dllexport)
-# define ZEXPORTVA __declspec(dllexport)
-# else
-# define ZEXPORT __declspec(dllimport)
-# define ZEXPORTVA __declspec(dllimport)
-# endif
-# endif
-#endif
-
-#ifndef ZEXTERN
-# define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-# define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-# define ZEXPORTVA
-#endif
-
-#ifndef FAR
-# define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char Byte; /* 8 bits */
-#endif
-typedef unsigned int uInt; /* 16 bits or more */
-typedef unsigned long uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
- /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-# define Bytef Byte FAR
-#else
- typedef Byte FAR Bytef;
-#endif
-typedef char FAR charf;
-typedef int FAR intf;
-typedef uInt FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
- typedef void const *voidpc;
- typedef void FAR *voidpf;
- typedef void *voidp;
-#else
- typedef Byte const *voidpc;
- typedef Byte FAR *voidpf;
- typedef Byte *voidp;
-#endif
-
-#if 0 /* HAVE_UNISTD_H -- this line is updated by ./configure */
-# include <sys/types.h> /* for off_t */
-# include <unistd.h> /* for SEEK_* and off_t */
-# ifdef VMS
-# include <unixio.h> /* for off_t */
-# endif
-# define z_off_t off_t
-#endif
-#ifndef SEEK_SET
-# define SEEK_SET 0 /* Seek from beginning of file. */
-# define SEEK_CUR 1 /* Seek from current position. */
-# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
-#endif
-#ifndef z_off_t
-# define z_off_t long
-#endif
-
-#if defined(__OS400__)
-# define NO_vsnprintf
-#endif
-
-#if defined(__MVS__)
-# define NO_vsnprintf
-# ifdef FAR
-# undef FAR
-# endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
-# pragma map(deflateInit_,"DEIN")
-# pragma map(deflateInit2_,"DEIN2")
-# pragma map(deflateEnd,"DEEND")
-# pragma map(deflateBound,"DEBND")
-# pragma map(inflateInit_,"ININ")
-# pragma map(inflateInit2_,"ININ2")
-# pragma map(inflateEnd,"INEND")
-# pragma map(inflateSync,"INSY")
-# pragma map(inflateSetDictionary,"INSEDI")
-# pragma map(compressBound,"CMBND")
-# pragma map(inflate_table,"INTABL")
-# pragma map(inflate_fast,"INFA")
-# pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */
+++ /dev/null
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZCONF_H
-#define ZCONF_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- */
-#ifdef Z_PREFIX
-# define deflateInit_ z_deflateInit_
-# define deflate z_deflate
-# define deflateEnd z_deflateEnd
-# define inflateInit_ z_inflateInit_
-# define inflate z_inflate
-# define inflateEnd z_inflateEnd
-# define deflateInit2_ z_deflateInit2_
-# define deflateSetDictionary z_deflateSetDictionary
-# define deflateCopy z_deflateCopy
-# define deflateReset z_deflateReset
-# define deflateParams z_deflateParams
-# define deflateBound z_deflateBound
-# define deflatePrime z_deflatePrime
-# define inflateInit2_ z_inflateInit2_
-# define inflateSetDictionary z_inflateSetDictionary
-# define inflateSync z_inflateSync
-# define inflateSyncPoint z_inflateSyncPoint
-# define inflateCopy z_inflateCopy
-# define inflateReset z_inflateReset
-# define inflateBack z_inflateBack
-# define inflateBackEnd z_inflateBackEnd
-# define compress z_compress
-# define compress2 z_compress2
-# define compressBound z_compressBound
-# define uncompress z_uncompress
-# define adler32 z_adler32
-# define crc32 z_crc32
-# define get_crc_table z_get_crc_table
-# define zError z_zError
-
-# define alloc_func z_alloc_func
-# define free_func z_free_func
-# define in_func z_in_func
-# define out_func z_out_func
-# define Byte z_Byte
-# define uInt z_uInt
-# define uLong z_uLong
-# define Bytef z_Bytef
-# define charf z_charf
-# define intf z_intf
-# define uIntf z_uIntf
-# define uLongf z_uLongf
-# define voidpf z_voidpf
-# define voidp z_voidp
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-# define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-# define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-# define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-# ifndef WIN32
-# define WIN32
-# endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-# ifndef SYS16BIT
-# define SYS16BIT
-# endif
-# endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-# define MAXSEG_64K
-#endif
-#ifdef MSDOS
-# define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-# ifndef STDC
-# define STDC
-# endif
-# if __STDC_VERSION__ >= 199901L
-# ifndef STDC99
-# define STDC99
-# endif
-# endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-# define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
-# define STDC
-#endif
-
-#ifndef STDC
-# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-# define const /* note: need a more gentle solution here */
-# endif
-#endif
-
-/* Some Mac compilers merge all .h files incorrectly: */
-#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
-# define NO_DUMMY_DECL
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-# ifdef MAXSEG_64K
-# define MAX_MEM_LEVEL 8
-# else
-# define MAX_MEM_LEVEL 9
-# endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-# define MAX_WBITS 15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
- (1 << (windowBits+2)) + (1 << (memLevel+9))
- that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
- make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
- The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus a few kilobytes
- for small objects.
-*/
-
- /* Type declarations */
-
-#ifndef OF /* function prototypes */
-# ifdef STDC
-# define OF(args) args
-# else
-# define OF(args) ()
-# endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-# if defined(M_I86SM) || defined(M_I86MM)
- /* MSC small or medium model */
-# define SMALL_MEDIUM
-# ifdef _MSC_VER
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-# if (defined(__SMALL__) || defined(__MEDIUM__))
- /* Turbo C small or medium model */
-# define SMALL_MEDIUM
-# ifdef __BORLANDC__
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
- /* If building or using zlib as a DLL, define ZLIB_DLL.
- * This is not mandatory, but it offers a little performance increase.
- */
-# ifdef ZLIB_DLL
-# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-# ifdef ZLIB_INTERNAL
-# define ZEXTERN extern __declspec(dllexport)
-# else
-# define ZEXTERN extern __declspec(dllimport)
-# endif
-# endif
-# endif /* ZLIB_DLL */
- /* If building or using zlib with the WINAPI/WINAPIV calling convention,
- * define ZLIB_WINAPI.
- * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
- */
-# ifdef ZLIB_WINAPI
-# ifdef FAR
-# undef FAR
-# endif
-# include <windows.h>
- /* No need for _export, use ZLIB.DEF instead. */
- /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-# define ZEXPORT WINAPI
-# ifdef WIN32
-# define ZEXPORTVA WINAPIV
-# else
-# define ZEXPORTVA FAR CDECL
-# endif
-# endif
-#endif
-
-#if defined (__BEOS__)
-# ifdef ZLIB_DLL
-# ifdef ZLIB_INTERNAL
-# define ZEXPORT __declspec(dllexport)
-# define ZEXPORTVA __declspec(dllexport)
-# else
-# define ZEXPORT __declspec(dllimport)
-# define ZEXPORTVA __declspec(dllimport)
-# endif
-# endif
-#endif
-
-#ifndef ZEXTERN
-# define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-# define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-# define ZEXPORTVA
-#endif
-
-#ifndef FAR
-# define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char Byte; /* 8 bits */
-#endif
-typedef unsigned int uInt; /* 16 bits or more */
-typedef unsigned long uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
- /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-# define Bytef Byte FAR
-#else
- typedef Byte FAR Bytef;
-#endif
-typedef char FAR charf;
-typedef int FAR intf;
-typedef uInt FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
- typedef void const *voidpc;
- typedef void FAR *voidpf;
- typedef void *voidp;
-#else
- typedef Byte const *voidpc;
- typedef Byte FAR *voidpf;
- typedef Byte *voidp;
-#endif
-
-#if 0 /* HAVE_UNISTD_H -- this line is updated by ./configure */
-# include <sys/types.h> /* for off_t */
-# include <unistd.h> /* for SEEK_* and off_t */
-# ifdef VMS
-# include <unixio.h> /* for off_t */
-# endif
-# define z_off_t off_t
-#endif
-#ifndef SEEK_SET
-# define SEEK_SET 0 /* Seek from beginning of file. */
-# define SEEK_CUR 1 /* Seek from current position. */
-# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
-#endif
-#ifndef z_off_t
-# define z_off_t long
-#endif
-
-#if defined(__OS400__)
-# define NO_vsnprintf
-#endif
-
-#if defined(__MVS__)
-# define NO_vsnprintf
-# ifdef FAR
-# undef FAR
-# endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
-# pragma map(deflateInit_,"DEIN")
-# pragma map(deflateInit2_,"DEIN2")
-# pragma map(deflateEnd,"DEEND")
-# pragma map(deflateBound,"DEBND")
-# pragma map(inflateInit_,"ININ")
-# pragma map(inflateInit2_,"ININ2")
-# pragma map(inflateEnd,"INEND")
-# pragma map(inflateSync,"INSY")
-# pragma map(inflateSetDictionary,"INSEDI")
-# pragma map(compressBound,"CMBND")
-# pragma map(inflate_table,"INTABL")
-# pragma map(inflate_fast,"INFA")
-# pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */
+++ /dev/null
-/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.2.3, July 18th, 2005
-
- Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Jean-loup Gailly Mark Adler
- jloup@gzip.org madler@alumni.caltech.edu
-
-
- The data format used by the zlib library is described by RFCs (Request for
- Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
- (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
-*/
-
-#ifndef ZLIB_H
-#define ZLIB_H
-
-#include "zconf.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define ZLIB_VERSION "1.2.3.1.Samba"
-#define ZLIB_VERNUM 0x1231
-/*
- * Modified for Samba by Stefan Metzmacher <metze@samba.org> 2008
- *
- * inflateReset2() added and compiler warnings fixed
- */
-
-
-/*
- The 'zlib' compression library provides in-memory compression and
- decompression functions, including integrity checks of the uncompressed
- data. This version of the library supports only one compression method
- (deflation) but other algorithms will be added later and will have the same
- stream interface.
-
- Compression can be done in a single step if the buffers are large
- enough (for example if an input file is mmap'ed), or can be done by
- repeated calls of the compression function. In the latter case, the
- application must provide more input and/or consume the output
- (providing more output space) before each call.
-
- The compressed data format used by default by the in-memory functions is
- the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
- around a deflate stream, which is itself documented in RFC 1951.
-
- The library also supports reading and writing files in gzip (.gz) format
- with an interface similar to that of stdio using the functions that start
- with "gz". The gzip format is different from the zlib format. gzip is a
- gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
-
- This library can optionally read and write gzip streams in memory as well.
-
- The zlib format was designed to be compact and fast for use in memory
- and on communications channels. The gzip format was designed for single-
- file compression on file systems, has a larger header than zlib to maintain
- directory information, and uses a different, slower check method than zlib.
-
- The library does not install any signal handler. The decoder checks
- the consistency of the compressed data, so the library should never
- crash even in case of corrupted input.
-*/
-
-typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
-typedef void (*free_func) OF((voidpf opaque, voidpf address));
-
-struct internal_state;
-
-typedef struct z_stream_s {
- const Bytef *next_in; /* next input byte */
- uInt avail_in; /* number of bytes available at next_in */
- uLong total_in; /* total nb of input bytes read so far */
-
- Bytef *next_out; /* next output byte should be put there */
- uInt avail_out; /* remaining free space at next_out */
- uLong total_out; /* total nb of bytes output so far */
-
- const char *msg; /* last error message, NULL if no error */
- struct internal_state FAR *state; /* not visible by applications */
-
- alloc_func zalloc; /* used to allocate the internal state */
- free_func zfree; /* used to free the internal state */
- voidpf opaque; /* private data object passed to zalloc and zfree */
-
- int data_type; /* best guess about the data type: binary or text */
- uLong adler; /* adler32 value of the uncompressed data */
- uLong reserved; /* reserved for future use */
-} z_stream;
-
-typedef z_stream FAR *z_streamp;
-
-/*
- gzip header information passed to and from zlib routines. See RFC 1952
- for more details on the meanings of these fields.
-*/
-typedef struct gz_header_s {
- int text; /* true if compressed data believed to be text */
- uLong time; /* modification time */
- int xflags; /* extra flags (not used when writing a gzip file) */
- int os; /* operating system */
- Bytef *extra; /* pointer to extra field or Z_NULL if none */
- uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
- uInt extra_max; /* space at extra (only when reading header) */
- Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
- uInt name_max; /* space at name (only when reading header) */
- Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
- uInt comm_max; /* space at comment (only when reading header) */
- int hcrc; /* true if there was or will be a header crc */
- int done; /* true when done reading gzip header (not used
- when writing a gzip file) */
-} gz_header;
-
-typedef gz_header FAR *gz_headerp;
-
-/*
- The application must update next_in and avail_in when avail_in has
- dropped to zero. It must update next_out and avail_out when avail_out
- has dropped to zero. The application must initialize zalloc, zfree and
- opaque before calling the init function. All other fields are set by the
- compression library and must not be updated by the application.
-
- The opaque value provided by the application will be passed as the first
- parameter for calls of zalloc and zfree. This can be useful for custom
- memory management. The compression library attaches no meaning to the
- opaque value.
-
- zalloc must return Z_NULL if there is not enough memory for the object.
- If zlib is used in a multi-threaded application, zalloc and zfree must be
- thread safe.
-
- On 16-bit systems, the functions zalloc and zfree must be able to allocate
- exactly 65536 bytes, but will not be required to allocate more than this
- if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
- pointers returned by zalloc for objects of exactly 65536 bytes *must*
- have their offset normalized to zero. The default allocation function
- provided by this library ensures this (see zutil.c). To reduce memory
- requirements and avoid any allocation of 64K objects, at the expense of
- compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
-
- The fields total_in and total_out can be used for statistics or
- progress reports. After compression, total_in holds the total size of
- the uncompressed data and may be saved for use in the decompressor
- (particularly if the decompressor wants to decompress everything in
- a single step).
-*/
-
- /* constants */
-
-#define Z_NO_FLUSH 0
-#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
-#define Z_SYNC_FLUSH 2
-#define Z_FULL_FLUSH 3
-#define Z_FINISH 4
-#define Z_BLOCK 5
-/* Allowed flush values; see deflate() and inflate() below for details */
-
-#define Z_OK 0
-#define Z_STREAM_END 1
-#define Z_NEED_DICT 2
-#define Z_ERRNO (-1)
-#define Z_STREAM_ERROR (-2)
-#define Z_DATA_ERROR (-3)
-#define Z_MEM_ERROR (-4)
-#define Z_BUF_ERROR (-5)
-#define Z_VERSION_ERROR (-6)
-/* Return codes for the compression/decompression functions. Negative
- * values are errors, positive values are used for special but normal events.
- */
-
-#define Z_NO_COMPRESSION 0
-#define Z_BEST_SPEED 1
-#define Z_BEST_COMPRESSION 9
-#define Z_DEFAULT_COMPRESSION (-1)
-/* compression levels */
-
-#define Z_FILTERED 1
-#define Z_HUFFMAN_ONLY 2
-#define Z_RLE 3
-#define Z_FIXED 4
-#define Z_DEFAULT_STRATEGY 0
-/* compression strategy; see deflateInit2() below for details */
-
-#define Z_BINARY 0
-#define Z_TEXT 1
-#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
-#define Z_UNKNOWN 2
-/* Possible values of the data_type field (though see inflate()) */
-
-#define Z_DEFLATED 8
-/* The deflate compression method (the only one supported in this version) */
-
-#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
-
-#define zlib_version zlibVersion()
-/* for compatibility with versions < 1.0.2 */
-
-#if (__GNUC__ >= 3) && (__GNUC_MINOR__ >= 1)
-/** Use gcc attribute to check printf fns. a1 is the 1-based index of
- * the parameter containing the format, and a2 the index of the first
- * argument. Note that some gcc 2.x versions don't handle this
- * properly **/
-#define _Z_PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
-#else
-#define _Z_PRINTF_ATTRIBUTE(a1, a2)
-#endif
-
- /* basic functions */
-
-ZEXTERN const char * ZEXPORT zlibVersion OF((void));
-/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
- If the first character differs, the library code actually used is
- not compatible with the zlib.h header file used by the application.
- This check is automatically made by deflateInit and inflateInit.
- */
-
-/*
-ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
-
- Initializes the internal stream state for compression. The fields
- zalloc, zfree and opaque must be initialized before by the caller.
- If zalloc and zfree are set to Z_NULL, deflateInit updates them to
- use default allocation functions.
-
- The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
- 1 gives best speed, 9 gives best compression, 0 gives no compression at
- all (the input data is simply copied a block at a time).
- Z_DEFAULT_COMPRESSION requests a default compromise between speed and
- compression (currently equivalent to level 6).
-
- deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_STREAM_ERROR if level is not a valid compression level,
- Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
- with the version assumed by the caller (ZLIB_VERSION).
- msg is set to null if there is no error message. deflateInit does not
- perform any compression: this will be done by deflate().
-*/
-
-
-ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
-/*
- deflate compresses as much data as possible, and stops when the input
- buffer becomes empty or the output buffer becomes full. It may introduce some
- output latency (reading input without producing any output) except when
- forced to flush.
-
- The detailed semantics are as follows. deflate performs one or both of the
- following actions:
-
- - Compress more input starting at next_in and update next_in and avail_in
- accordingly. If not all input can be processed (because there is not
- enough room in the output buffer), next_in and avail_in are updated and
- processing will resume at this point for the next call of deflate().
-
- - Provide more output starting at next_out and update next_out and avail_out
- accordingly. This action is forced if the parameter flush is non zero.
- Forcing flush frequently degrades the compression ratio, so this parameter
- should be set only when necessary (in interactive applications).
- Some output may be provided even if flush is not set.
-
- Before the call of deflate(), the application should ensure that at least
- one of the actions is possible, by providing more input and/or consuming
- more output, and updating avail_in or avail_out accordingly; avail_out
- should never be zero before the call. The application can consume the
- compressed output when it wants, for example when the output buffer is full
- (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK
- and with zero avail_out, it must be called again after making room in the
- output buffer because there might be more output pending.
-
- Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
- decide how much data to accumualte before producing output, in order to
- maximize compression.
-
- If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
- flushed to the output buffer and the output is aligned on a byte boundary, so
- that the decompressor can get all input data available so far. (In particular
- avail_in is zero after the call if enough output space has been provided
- before the call.) Flushing may degrade compression for some compression
- algorithms and so it should be used only when necessary.
-
- If flush is set to Z_FULL_FLUSH, all output is flushed as with
- Z_SYNC_FLUSH, and the compression state is reset so that decompression can
- restart from this point if previous compressed data has been damaged or if
- random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
- compression.
-
- If deflate returns with avail_out == 0, this function must be called again
- with the same value of the flush parameter and more output space (updated
- avail_out), until the flush is complete (deflate returns with non-zero
- avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
- avail_out is greater than six to avoid repeated flush markers due to
- avail_out == 0 on return.
-
- If the parameter flush is set to Z_FINISH, pending input is processed,
- pending output is flushed and deflate returns with Z_STREAM_END if there
- was enough output space; if deflate returns with Z_OK, this function must be
- called again with Z_FINISH and more output space (updated avail_out) but no
- more input data, until it returns with Z_STREAM_END or an error. After
- deflate has returned Z_STREAM_END, the only possible operations on the
- stream are deflateReset or deflateEnd.
-
- Z_FINISH can be used immediately after deflateInit if all the compression
- is to be done in a single step. In this case, avail_out must be at least
- the value returned by deflateBound (see below). If deflate does not return
- Z_STREAM_END, then it must be called again as described above.
-
- deflate() sets strm->adler to the adler32 checksum of all input read
- so far (that is, total_in bytes).
-
- deflate() may update strm->data_type if it can make a good guess about
- the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered
- binary. This field is only for information purposes and does not affect
- the compression algorithm in any manner.
-
- deflate() returns Z_OK if some progress has been made (more input
- processed or more output produced), Z_STREAM_END if all input has been
- consumed and all output has been produced (only when flush is set to
- Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
- if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
- (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not
- fatal, and deflate() can be called again with more input and more output
- space to continue compressing.
-*/
-
-
-ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
-/*
- All dynamically allocated data structures for this stream are freed.
- This function discards any unprocessed input and does not flush any
- pending output.
-
- deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
- stream state was inconsistent, Z_DATA_ERROR if the stream was freed
- prematurely (some input or output was discarded). In the error case,
- msg may be set but then points to a static string (which must not be
- deallocated).
-*/
-
-
-/*
-ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
-
- Initializes the internal stream state for decompression. The fields
- next_in, avail_in, zalloc, zfree and opaque must be initialized before by
- the caller. If next_in is not Z_NULL and avail_in is large enough (the exact
- value depends on the compression method), inflateInit determines the
- compression method from the zlib header and allocates all data structures
- accordingly; otherwise the allocation will be deferred to the first call of
- inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to
- use default allocation functions.
-
- inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
- version assumed by the caller. msg is set to null if there is no error
- message. inflateInit does not perform any decompression apart from reading
- the zlib header if present: this will be done by inflate(). (So next_in and
- avail_in may be modified, but next_out and avail_out are unchanged.)
-*/
-
-
-ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
-/*
- inflate decompresses as much data as possible, and stops when the input
- buffer becomes empty or the output buffer becomes full. It may introduce
- some output latency (reading input without producing any output) except when
- forced to flush.
-
- The detailed semantics are as follows. inflate performs one or both of the
- following actions:
-
- - Decompress more input starting at next_in and update next_in and avail_in
- accordingly. If not all input can be processed (because there is not
- enough room in the output buffer), next_in is updated and processing
- will resume at this point for the next call of inflate().
-
- - Provide more output starting at next_out and update next_out and avail_out
- accordingly. inflate() provides as much output as possible, until there
- is no more input data or no more space in the output buffer (see below
- about the flush parameter).
-
- Before the call of inflate(), the application should ensure that at least
- one of the actions is possible, by providing more input and/or consuming
- more output, and updating the next_* and avail_* values accordingly.
- The application can consume the uncompressed output when it wants, for
- example when the output buffer is full (avail_out == 0), or after each
- call of inflate(). If inflate returns Z_OK and with zero avail_out, it
- must be called again after making room in the output buffer because there
- might be more output pending.
-
- The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH,
- Z_FINISH, or Z_BLOCK. Z_SYNC_FLUSH requests that inflate() flush as much
- output as possible to the output buffer. Z_BLOCK requests that inflate() stop
- if and when it gets to the next deflate block boundary. When decoding the
- zlib or gzip format, this will cause inflate() to return immediately after
- the header and before the first block. When doing a raw inflate, inflate()
- will go ahead and process the first block, and will return when it gets to
- the end of that block, or when it runs out of data.
-
- The Z_BLOCK option assists in appending to or combining deflate streams.
- Also to assist in this, on return inflate() will set strm->data_type to the
- number of unused bits in the last byte taken from strm->next_in, plus 64
- if inflate() is currently decoding the last block in the deflate stream,
- plus 128 if inflate() returned immediately after decoding an end-of-block
- code or decoding the complete header up to just before the first byte of the
- deflate stream. The end-of-block will not be indicated until all of the
- uncompressed data from that block has been written to strm->next_out. The
- number of unused bits may in general be greater than seven, except when
- bit 7 of data_type is set, in which case the number of unused bits will be
- less than eight.
-
- inflate() should normally be called until it returns Z_STREAM_END or an
- error. However if all decompression is to be performed in a single step
- (a single call of inflate), the parameter flush should be set to
- Z_FINISH. In this case all pending input is processed and all pending
- output is flushed; avail_out must be large enough to hold all the
- uncompressed data. (The size of the uncompressed data may have been saved
- by the compressor for this purpose.) The next operation on this stream must
- be inflateEnd to deallocate the decompression state. The use of Z_FINISH
- is never required, but can be used to inform inflate that a faster approach
- may be used for the single inflate() call.
-
- In this implementation, inflate() always flushes as much output as
- possible to the output buffer, and always uses the faster approach on the
- first call. So the only effect of the flush parameter in this implementation
- is on the return value of inflate(), as noted below, or when it returns early
- because Z_BLOCK is used.
-
- If a preset dictionary is needed after this call (see inflateSetDictionary
- below), inflate sets strm->adler to the adler32 checksum of the dictionary
- chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
- strm->adler to the adler32 checksum of all output produced so far (that is,
- total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
- below. At the end of the stream, inflate() checks that its computed adler32
- checksum is equal to that saved by the compressor and returns Z_STREAM_END
- only if the checksum is correct.
-
- inflate() will decompress and check either zlib-wrapped or gzip-wrapped
- deflate data. The header type is detected automatically. Any information
- contained in the gzip header is not retained, so applications that need that
- information should instead use raw inflate, see inflateInit2() below, or
- inflateBack() and perform their own processing of the gzip header and
- trailer.
-
- inflate() returns Z_OK if some progress has been made (more input processed
- or more output produced), Z_STREAM_END if the end of the compressed data has
- been reached and all uncompressed output has been produced, Z_NEED_DICT if a
- preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
- corrupted (input stream not conforming to the zlib format or incorrect check
- value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
- if next_in or next_out was NULL), Z_MEM_ERROR if there was not enough memory,
- Z_BUF_ERROR if no progress is possible or if there was not enough room in the
- output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
- inflate() can be called again with more input and more output space to
- continue decompressing. If Z_DATA_ERROR is returned, the application may then
- call inflateSync() to look for a good compression block if a partial recovery
- of the data is desired.
-*/
-
-
-ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
-/*
- All dynamically allocated data structures for this stream are freed.
- This function discards any unprocessed input and does not flush any
- pending output.
-
- inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
- was inconsistent. In the error case, msg may be set but then points to a
- static string (which must not be deallocated).
-*/
-
- /* Advanced functions */
-
-/*
- The following functions are needed only in some special applications.
-*/
-
-/*
-ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
- int level,
- int method,
- int windowBits,
- int memLevel,
- int strategy));
-
- This is another version of deflateInit with more compression options. The
- fields next_in, zalloc, zfree and opaque must be initialized before by
- the caller.
-
- The method parameter is the compression method. It must be Z_DEFLATED in
- this version of the library.
-
- The windowBits parameter is the base two logarithm of the window size
- (the size of the history buffer). It should be in the range 8..15 for this
- version of the library. Larger values of this parameter result in better
- compression at the expense of memory usage. The default value is 15 if
- deflateInit is used instead.
-
- windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
- determines the window size. deflate() will then generate raw deflate data
- with no zlib header or trailer, and will not compute an adler32 check value.
-
- windowBits can also be greater than 15 for optional gzip encoding. Add
- 16 to windowBits to write a simple gzip header and trailer around the
- compressed data instead of a zlib wrapper. The gzip header will have no
- file name, no extra data, no comment, no modification time (set to zero),
- no header crc, and the operating system will be set to 255 (unknown). If a
- gzip stream is being written, strm->adler is a crc32 instead of an adler32.
-
- The memLevel parameter specifies how much memory should be allocated
- for the internal compression state. memLevel=1 uses minimum memory but
- is slow and reduces compression ratio; memLevel=9 uses maximum memory
- for optimal speed. The default value is 8. See zconf.h for total memory
- usage as a function of windowBits and memLevel.
-
- The strategy parameter is used to tune the compression algorithm. Use the
- value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
- filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
- string match), or Z_RLE to limit match distances to one (run-length
- encoding). Filtered data consists mostly of small values with a somewhat
- random distribution. In this case, the compression algorithm is tuned to
- compress them better. The effect of Z_FILTERED is to force more Huffman
- coding and less string matching; it is somewhat intermediate between
- Z_DEFAULT and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as fast as
- Z_HUFFMAN_ONLY, but give better compression for PNG image data. The strategy
- parameter only affects the compression ratio but not the correctness of the
- compressed output even if it is not set appropriately. Z_FIXED prevents the
- use of dynamic Huffman codes, allowing for a simpler decoder for special
- applications.
-
- deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid
- method). msg is set to null if there is no error message. deflateInit2 does
- not perform any compression: this will be done by deflate().
-*/
-
-ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
- const Bytef *dictionary,
- uInt dictLength));
-/*
- Initializes the compression dictionary from the given byte sequence
- without producing any compressed output. This function must be called
- immediately after deflateInit, deflateInit2 or deflateReset, before any
- call of deflate. The compressor and decompressor must use exactly the same
- dictionary (see inflateSetDictionary).
-
- The dictionary should consist of strings (byte sequences) that are likely
- to be encountered later in the data to be compressed, with the most commonly
- used strings preferably put towards the end of the dictionary. Using a
- dictionary is most useful when the data to be compressed is short and can be
- predicted with good accuracy; the data can then be compressed better than
- with the default empty dictionary.
-
- Depending on the size of the compression data structures selected by
- deflateInit or deflateInit2, a part of the dictionary may in effect be
- discarded, for example if the dictionary is larger than the window size in
- deflate or deflate2. Thus the strings most likely to be useful should be
- put at the end of the dictionary, not at the front. In addition, the
- current implementation of deflate will use at most the window size minus
- 262 bytes of the provided dictionary.
-
- Upon return of this function, strm->adler is set to the adler32 value
- of the dictionary; the decompressor may later use this value to determine
- which dictionary has been used by the compressor. (The adler32 value
- applies to the whole dictionary even if only a subset of the dictionary is
- actually used by the compressor.) If a raw deflate was requested, then the
- adler32 value is not computed and strm->adler is not set.
-
- deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
- parameter is invalid (such as NULL dictionary) or the stream state is
- inconsistent (for example if deflate has already been called for this stream
- or if the compression method is bsort). deflateSetDictionary does not
- perform any compression: this will be done by deflate().
-*/
-
-ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
- z_streamp source));
-/*
- Sets the destination stream as a complete copy of the source stream.
-
- This function can be useful when several compression strategies will be
- tried, for example when there are several ways of pre-processing the input
- data with a filter. The streams that will be discarded should then be freed
- by calling deflateEnd. Note that deflateCopy duplicates the internal
- compression state which can be quite large, so this strategy is slow and
- can consume lots of memory.
-
- deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
- (such as zalloc being NULL). msg is left unchanged in both source and
- destination.
-*/
-
-ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
-/*
- This function is equivalent to deflateEnd followed by deflateInit,
- but does not free and reallocate all the internal compression state.
- The stream will keep the same compression level and any other attributes
- that may have been set by deflateInit2.
-
- deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent (such as zalloc or state being NULL).
-*/
-
-ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
- int level,
- int strategy));
-/*
- Dynamically update the compression level and compression strategy. The
- interpretation of level and strategy is as in deflateInit2. This can be
- used to switch between compression and straight copy of the input data, or
- to switch to a different kind of input data requiring a different
- strategy. If the compression level is changed, the input available so far
- is compressed with the old level (and may be flushed); the new level will
- take effect only at the next call of deflate().
-
- Before the call of deflateParams, the stream state must be set as for
- a call of deflate(), since the currently available input may have to
- be compressed and flushed. In particular, strm->avail_out must be non-zero.
-
- deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
- stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR
- if strm->avail_out was zero.
-*/
-
-ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
- int good_length,
- int max_lazy,
- int nice_length,
- int max_chain));
-/*
- Fine tune deflate's internal compression parameters. This should only be
- used by someone who understands the algorithm used by zlib's deflate for
- searching for the best matching string, and even then only by the most
- fanatic optimizer trying to squeeze out the last compressed bit for their
- specific input data. Read the deflate.c source code for the meaning of the
- max_lazy, good_length, nice_length, and max_chain parameters.
-
- deflateTune() can be called after deflateInit() or deflateInit2(), and
- returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
- */
-
-ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
- uLong sourceLen));
-/*
- deflateBound() returns an upper bound on the compressed size after
- deflation of sourceLen bytes. It must be called after deflateInit()
- or deflateInit2(). This would be used to allocate an output buffer
- for deflation in a single pass, and so would be called before deflate().
-*/
-
-ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
- int bits,
- int value));
-/*
- deflatePrime() inserts bits in the deflate output stream. The intent
- is that this function is used to start off the deflate output with the
- bits leftover from a previous deflate stream when appending to it. As such,
- this function can only be used for raw deflate, and must be used before the
- first deflate() call after a deflateInit2() or deflateReset(). bits must be
- less than or equal to 16, and that many of the least significant bits of
- value will be inserted in the output.
-
- deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
- gz_headerp head));
-/*
- deflateSetHeader() provides gzip header information for when a gzip
- stream is requested by deflateInit2(). deflateSetHeader() may be called
- after deflateInit2() or deflateReset() and before the first call of
- deflate(). The text, time, os, extra field, name, and comment information
- in the provided gz_header structure are written to the gzip header (xflag is
- ignored -- the extra flags are set according to the compression level). The
- caller must assure that, if not Z_NULL, name and comment are terminated with
- a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
- available there. If hcrc is true, a gzip header crc is included. Note that
- the current versions of the command-line version of gzip (up through version
- 1.3.x) do not support header crc's, and will report that it is a "multi-part
- gzip file" and give up.
-
- If deflateSetHeader is not used, the default gzip header has text false,
- the time set to zero, and os set to 255, with no extra, name, or comment
- fields. The gzip header is returned to the default state by deflateReset().
-
- deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-/*
-ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
- int windowBits));
-
- This is another version of inflateInit with an extra parameter. The
- fields next_in, avail_in, zalloc, zfree and opaque must be initialized
- before by the caller.
-
- The windowBits parameter is the base two logarithm of the maximum window
- size (the size of the history buffer). It should be in the range 8..15 for
- this version of the library. The default value is 15 if inflateInit is used
- instead. windowBits must be greater than or equal to the windowBits value
- provided to deflateInit2() while compressing, or it must be equal to 15 if
- deflateInit2() was not used. If a compressed stream with a larger window
- size is given as input, inflate() will return with the error code
- Z_DATA_ERROR instead of trying to allocate a larger window.
-
- windowBits can also be -8..-15 for raw inflate. In this case, -windowBits
- determines the window size. inflate() will then process raw deflate data,
- not looking for a zlib or gzip header, not generating a check value, and not
- looking for any check values for comparison at the end of the stream. This
- is for use with other formats that use the deflate compressed data format
- such as zip. Those formats provide their own check values. If a custom
- format is developed using the raw deflate format for compressed data, it is
- recommended that a check value such as an adler32 or a crc32 be applied to
- the uncompressed data as is done in the zlib, gzip, and zip formats. For
- most applications, the zlib format should be used as is. Note that comments
- above on the use in deflateInit2() applies to the magnitude of windowBits.
-
- windowBits can also be greater than 15 for optional gzip decoding. Add
- 32 to windowBits to enable zlib and gzip decoding with automatic header
- detection, or add 16 to decode only the gzip format (the zlib format will
- return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is
- a crc32 instead of an adler32.
-
- inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_STREAM_ERROR if a parameter is invalid (such as a null strm). msg
- is set to null if there is no error message. inflateInit2 does not perform
- any decompression apart from reading the zlib header if present: this will
- be done by inflate(). (So next_in and avail_in may be modified, but next_out
- and avail_out are unchanged.)
-*/
-
-ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
- const Bytef *dictionary,
- uInt dictLength));
-/*
- Initializes the decompression dictionary from the given uncompressed byte
- sequence. This function must be called immediately after a call of inflate,
- if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
- can be determined from the adler32 value returned by that call of inflate.
- The compressor and decompressor must use exactly the same dictionary (see
- deflateSetDictionary). For raw inflate, this function can be called
- immediately after inflateInit2() or inflateReset() and before any call of
- inflate() to set the dictionary. The application must insure that the
- dictionary that was used for compression is provided.
-
- inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
- parameter is invalid (such as NULL dictionary) or the stream state is
- inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
- expected one (incorrect adler32 value). inflateSetDictionary does not
- perform any decompression: this will be done by subsequent calls of
- inflate().
-*/
-
-ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
-/*
- Skips invalid compressed data until a full flush point (see above the
- description of deflate with Z_FULL_FLUSH) can be found, or until all
- available input is skipped. No output is provided.
-
- inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
- if no more input was provided, Z_DATA_ERROR if no flush point has been found,
- or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
- case, the application may save the current current value of total_in which
- indicates where valid compressed data was found. In the error case, the
- application may repeatedly call inflateSync, providing more input each time,
- until success or end of the input data.
-*/
-
-ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
- z_streamp source));
-/*
- Sets the destination stream as a complete copy of the source stream.
-
- This function can be useful when randomly accessing a large stream. The
- first pass through the stream can periodically record the inflate state,
- allowing restarting inflate at those points when randomly accessing the
- stream.
-
- inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
- (such as zalloc being NULL). msg is left unchanged in both source and
- destination.
-*/
-
-ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
-/*
- This function is equivalent to inflateEnd followed by inflateInit,
- but does not free and reallocate all the internal decompression state.
- The stream will keep attributes that may have been set by inflateInit2.
-
- inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent (such as zalloc or state being NULL).
-*/
-
-ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
- int bits,
- int value));
-/*
- This function inserts bits in the inflate input stream. The intent is
- that this function is used to start inflating at a bit position in the
- middle of a byte. The provided bits will be used before any bytes are used
- from next_in. This function should only be used with raw inflate, and
- should be used before the first inflate() call after inflateInit2() or
- inflateReset(). bits must be less than or equal to 16, and that many of the
- least significant bits of value will be inserted in the input.
-
- inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
- gz_headerp head));
-/*
- inflateGetHeader() requests that gzip header information be stored in the
- provided gz_header structure. inflateGetHeader() may be called after
- inflateInit2() or inflateReset(), and before the first call of inflate().
- As inflate() processes the gzip stream, head->done is zero until the header
- is completed, at which time head->done is set to one. If a zlib stream is
- being decoded, then head->done is set to -1 to indicate that there will be
- no gzip header information forthcoming. Note that Z_BLOCK can be used to
- force inflate() to return immediately after header processing is complete
- and before any actual data is decompressed.
-
- The text, time, xflags, and os fields are filled in with the gzip header
- contents. hcrc is set to true if there is a header CRC. (The header CRC
- was valid if done is set to one.) If extra is not Z_NULL, then extra_max
- contains the maximum number of bytes to write to extra. Once done is true,
- extra_len contains the actual extra field length, and extra contains the
- extra field, or that field truncated if extra_max is less than extra_len.
- If name is not Z_NULL, then up to name_max characters are written there,
- terminated with a zero unless the length is greater than name_max. If
- comment is not Z_NULL, then up to comm_max characters are written there,
- terminated with a zero unless the length is greater than comm_max. When
- any of extra, name, or comment are not Z_NULL and the respective field is
- not present in the header, then that field is set to Z_NULL to signal its
- absence. This allows the use of deflateSetHeader() with the returned
- structure to duplicate the header. However if those fields are set to
- allocated memory, then the application will need to save those pointers
- elsewhere so that they can be eventually freed.
-
- If inflateGetHeader is not used, then the header information is simply
- discarded. The header is always checked for validity, including the header
- CRC if present. inflateReset() will reset the process to discard the header
- information. The application would need to call inflateGetHeader() again to
- retrieve the header from the next gzip stream.
-
- inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-/*
-ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
- unsigned char FAR *window));
-
- Initialize the internal stream state for decompression using inflateBack()
- calls. The fields zalloc, zfree and opaque in strm must be initialized
- before the call. If zalloc and zfree are Z_NULL, then the default library-
- derived memory allocation routines are used. windowBits is the base two
- logarithm of the window size, in the range 8..15. window is a caller
- supplied buffer of that size. Except for special applications where it is
- assured that deflate was used with small window sizes, windowBits must be 15
- and a 32K byte window must be supplied to be able to decompress general
- deflate streams.
-
- See inflateBack() for the usage of these routines.
-
- inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
- the parameters are invalid, Z_MEM_ERROR if the internal state could not
- be allocated, or Z_VERSION_ERROR if the version of the library does not
- match the version of the header file.
-*/
-
-typedef unsigned (*in_func) OF((void FAR *, unsigned const char FAR * FAR *));
-typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
-
-ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
- in_func in, void FAR *in_desc,
- out_func out, void FAR *out_desc));
-/*
- inflateBack() does a raw inflate with a single call using a call-back
- interface for input and output. This is more efficient than inflate() for
- file i/o applications in that it avoids copying between the output and the
- sliding window by simply making the window itself the output buffer. This
- function trusts the application to not change the output buffer passed by
- the output function, at least until inflateBack() returns.
-
- inflateBackInit() must be called first to allocate the internal state
- and to initialize the state with the user-provided window buffer.
- inflateBack() may then be used multiple times to inflate a complete, raw
- deflate stream with each call. inflateBackEnd() is then called to free
- the allocated state.
-
- A raw deflate stream is one with no zlib or gzip header or trailer.
- This routine would normally be used in a utility that reads zip or gzip
- files and writes out uncompressed files. The utility would decode the
- header and process the trailer on its own, hence this routine expects
- only the raw deflate stream to decompress. This is different from the
- normal behavior of inflate(), which expects either a zlib or gzip header and
- trailer around the deflate stream.
-
- inflateBack() uses two subroutines supplied by the caller that are then
- called by inflateBack() for input and output. inflateBack() calls those
- routines until it reads a complete deflate stream and writes out all of the
- uncompressed data, or until it encounters an error. The function's
- parameters and return types are defined above in the in_func and out_func
- typedefs. inflateBack() will call in(in_desc, &buf) which should return the
- number of bytes of provided input, and a pointer to that input in buf. If
- there is no input available, in() must return zero--buf is ignored in that
- case--and inflateBack() will return a buffer error. inflateBack() will call
- out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()
- should return zero on success, or non-zero on failure. If out() returns
- non-zero, inflateBack() will return with an error. Neither in() nor out()
- are permitted to change the contents of the window provided to
- inflateBackInit(), which is also the buffer that out() uses to write from.
- The length written by out() will be at most the window size. Any non-zero
- amount of input may be provided by in().
-
- For convenience, inflateBack() can be provided input on the first call by
- setting strm->next_in and strm->avail_in. If that input is exhausted, then
- in() will be called. Therefore strm->next_in must be initialized before
- calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called
- immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in
- must also be initialized, and then if strm->avail_in is not zero, input will
- initially be taken from strm->next_in[0 .. strm->avail_in - 1].
-
- The in_desc and out_desc parameters of inflateBack() is passed as the
- first parameter of in() and out() respectively when they are called. These
- descriptors can be optionally used to pass any information that the caller-
- supplied in() and out() functions need to do their job.
-
- On return, inflateBack() will set strm->next_in and strm->avail_in to
- pass back any unused input that was provided by the last in() call. The
- return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
- if in() or out() returned an error, Z_DATA_ERROR if there was a format
- error in the deflate stream (in which case strm->msg is set to indicate the
- nature of the error), or Z_STREAM_ERROR if the stream was not properly
- initialized. In the case of Z_BUF_ERROR, an input or output error can be
- distinguished using strm->next_in which will be Z_NULL only if in() returned
- an error. If strm->next is not Z_NULL, then the Z_BUF_ERROR was due to
- out() returning non-zero. (in() will always be called before out(), so
- strm->next_in is assured to be defined if out() returns non-zero.) Note
- that inflateBack() cannot return Z_OK.
-*/
-
-ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
-/*
- All memory allocated by inflateBackInit() is freed.
-
- inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
- state was inconsistent.
-*/
-
-ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
-/* Return flags indicating compile-time options.
-
- Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
- 1.0: size of uInt
- 3.2: size of uLong
- 5.4: size of voidpf (pointer)
- 7.6: size of z_off_t
-
- Compiler, assembler, and debug options:
- 8: DEBUG
- 9: ASMV or ASMINF -- use ASM code
- 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
- 11: 0 (reserved)
-
- One-time table building (smaller code, but not thread-safe if true):
- 12: BUILDFIXED -- build static block decoding tables when needed
- 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
- 14,15: 0 (reserved)
-
- Library content (indicates missing functionality):
- 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
- deflate code when not needed)
- 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
- and decode gzip streams (to avoid linking crc code)
- 18-19: 0 (reserved)
-
- Operation variations (changes in library functionality):
- 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
- 21: FASTEST -- deflate algorithm with only one, lowest compression level
- 22,23: 0 (reserved)
-
- The sprintf variant used by gzprintf (zero is best):
- 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
- 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
- 26: 0 = returns value, 1 = void -- 1 means inferred string length returned
-
- Remainder:
- 27-31: 0 (reserved)
- */
-
-
- /* utility functions */
-
-/*
- The following utility functions are implemented on top of the
- basic stream-oriented functions. To simplify the interface, some
- default options are assumed (compression level and memory usage,
- standard memory allocation functions). The source code of these
- utility functions can easily be modified if you need special options.
-*/
-
-ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen));
-/*
- Compresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total
- size of the destination buffer, which must be at least the value returned
- by compressBound(sourceLen). Upon exit, destLen is the actual size of the
- compressed buffer.
- This function can be used to compress a whole file at once if the
- input file is mmap'ed.
- compress returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_BUF_ERROR if there was not enough room in the output
- buffer.
-*/
-
-ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen,
- int level));
-/*
- Compresses the source buffer into the destination buffer. The level
- parameter has the same meaning as in deflateInit. sourceLen is the byte
- length of the source buffer. Upon entry, destLen is the total size of the
- destination buffer, which must be at least the value returned by
- compressBound(sourceLen). Upon exit, destLen is the actual size of the
- compressed buffer.
-
- compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_BUF_ERROR if there was not enough room in the output buffer,
- Z_STREAM_ERROR if the level parameter is invalid.
-*/
-
-ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
-/*
- compressBound() returns an upper bound on the compressed size after
- compress() or compress2() on sourceLen bytes. It would be used before
- a compress() or compress2() call to allocate the destination buffer.
-*/
-
-ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen));
-/*
- Decompresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total
- size of the destination buffer, which must be large enough to hold the
- entire uncompressed data. (The size of the uncompressed data must have
- been saved previously by the compressor and transmitted to the decompressor
- by some mechanism outside the scope of this compression library.)
- Upon exit, destLen is the actual size of the compressed buffer.
- This function can be used to decompress a whole file at once if the
- input file is mmap'ed.
-
- uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_BUF_ERROR if there was not enough room in the output
- buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.
-*/
-
-
-typedef voidp gzFile;
-
-ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
-/*
- Opens a gzip (.gz) file for reading or writing. The mode parameter
- is as in fopen ("rb" or "wb") but can also include a compression level
- ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
- Huffman only compression as in "wb1h", or 'R' for run-length encoding
- as in "wb1R". (See the description of deflateInit2 for more information
- about the strategy parameter.)
-
- gzopen can be used to read a file which is not in gzip format; in this
- case gzread will directly read from the file without decompression.
-
- gzopen returns NULL if the file could not be opened or if there was
- insufficient memory to allocate the (de)compression state; errno
- can be checked to distinguish the two cases (if errno is zero, the
- zlib error is Z_MEM_ERROR). */
-
-ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
-/*
- gzdopen() associates a gzFile with the file descriptor fd. File
- descriptors are obtained from calls like open, dup, creat, pipe or
- fileno (in the file has been previously opened with fopen).
- The mode parameter is as in gzopen.
- The next call of gzclose on the returned gzFile will also close the
- file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
- descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).
- gzdopen returns NULL if there was insufficient memory to allocate
- the (de)compression state.
-*/
-
-ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
-/*
- Dynamically update the compression level or strategy. See the description
- of deflateInit2 for the meaning of these parameters.
- gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
- opened for writing.
-*/
-
-ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
-/*
- Reads the given number of uncompressed bytes from the compressed file.
- If the input file was not in gzip format, gzread copies the given number
- of bytes into the buffer.
- gzread returns the number of uncompressed bytes actually read (0 for
- end of file, -1 for error). */
-
-ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
- voidpc buf, unsigned len));
-/*
- Writes the given number of uncompressed bytes into the compressed file.
- gzwrite returns the number of uncompressed bytes actually written
- (0 in case of error).
-*/
-
-ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...))
- _Z_PRINTF_ATTRIBUTE(2, 3);
-/*
- Converts, formats, and writes the args to the compressed file under
- control of the format string, as in fprintf. gzprintf returns the number of
- uncompressed bytes actually written (0 in case of error). The number of
- uncompressed bytes written is limited to 4095. The caller should assure that
- this limit is not exceeded. If it is exceeded, then gzprintf() will return
- return an error (0) with nothing written. In this case, there may also be a
- buffer overflow with unpredictable consequences, which is possible only if
- zlib was compiled with the insecure functions sprintf() or vsprintf()
- because the secure snprintf() or vsnprintf() functions were not available.
-*/
-
-ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
-/*
- Writes the given null-terminated string to the compressed file, excluding
- the terminating null character.
- gzputs returns the number of characters written, or -1 in case of error.
-*/
-
-ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
-/*
- Reads bytes from the compressed file until len-1 characters are read, or
- a newline character is read and transferred to buf, or an end-of-file
- condition is encountered. The string is then terminated with a null
- character.
- gzgets returns buf, or Z_NULL in case of error.
-*/
-
-ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
-/*
- Writes c, converted to an unsigned char, into the compressed file.
- gzputc returns the value that was written, or -1 in case of error.
-*/
-
-ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
-/*
- Reads one byte from the compressed file. gzgetc returns this byte
- or -1 in case of end of file or error.
-*/
-
-ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
-/*
- Push one character back onto the stream to be read again later.
- Only one character of push-back is allowed. gzungetc() returns the
- character pushed, or -1 on failure. gzungetc() will fail if a
- character has been pushed but not read yet, or if c is -1. The pushed
- character will be discarded if the stream is repositioned with gzseek()
- or gzrewind().
-*/
-
-ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
-/*
- Flushes all pending output into the compressed file. The parameter
- flush is as in the deflate() function. The return value is the zlib
- error number (see function gzerror below). gzflush returns Z_OK if
- the flush parameter is Z_FINISH and all output could be flushed.
- gzflush should be called only when strictly necessary because it can
- degrade compression.
-*/
-
-ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
- z_off_t offset, int whence));
-/*
- Sets the starting position for the next gzread or gzwrite on the
- given compressed file. The offset represents a number of bytes in the
- uncompressed data stream. The whence parameter is defined as in lseek(2);
- the value SEEK_END is not supported.
- If the file is opened for reading, this function is emulated but can be
- extremely slow. If the file is opened for writing, only forward seeks are
- supported; gzseek then compresses a sequence of zeroes up to the new
- starting position.
-
- gzseek returns the resulting offset location as measured in bytes from
- the beginning of the uncompressed stream, or -1 in case of error, in
- particular if the file is opened for writing and the new starting position
- would be before the current position.
-*/
-
-ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
-/*
- Rewinds the given file. This function is supported only for reading.
-
- gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
-*/
-
-ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
-/*
- Returns the starting position for the next gzread or gzwrite on the
- given compressed file. This position represents a number of bytes in the
- uncompressed data stream.
-
- gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
-*/
-
-ZEXTERN int ZEXPORT gzeof OF((gzFile file));
-/*
- Returns 1 when EOF has previously been detected reading the given
- input stream, otherwise zero.
-*/
-
-ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
-/*
- Returns 1 if file is being read directly without decompression, otherwise
- zero.
-*/
-
-ZEXTERN int ZEXPORT gzclose OF((gzFile file));
-/*
- Flushes all pending output if necessary, closes the compressed file
- and deallocates all the (de)compression state. The return value is the zlib
- error number (see function gzerror below).
-*/
-
-ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
-/*
- Returns the error message for the last error which occurred on the
- given compressed file. errnum is set to zlib error number. If an
- error occurred in the file system and not in the compression library,
- errnum is set to Z_ERRNO and the application may consult errno
- to get the exact error code.
-*/
-
-ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
-/*
- Clears the error and end-of-file flags for file. This is analogous to the
- clearerr() function in stdio. This is useful for continuing to read a gzip
- file that is being written concurrently.
-*/
-
- /* checksum functions */
-
-/*
- These functions are not related to compression but are exported
- anyway because they might be useful in applications using the
- compression library.
-*/
-
-ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
-/*
- Update a running Adler-32 checksum with the bytes buf[0..len-1] and
- return the updated checksum. If buf is NULL, this function returns
- the required initial value for the checksum.
- An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
- much faster. Usage example:
-
- uLong adler = adler32(0L, Z_NULL, 0);
-
- while (read_buffer(buffer, length) != EOF) {
- adler = adler32(adler, buffer, length);
- }
- if (adler != original_adler) error();
-*/
-
-ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
- z_off_t len2));
-/*
- Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
- and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
- each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
- seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
-*/
-
-ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
-/*
- Update a running CRC-32 with the bytes buf[0..len-1] and return the
- updated CRC-32. If buf is NULL, this function returns the required initial
- value for the for the crc. Pre- and post-conditioning (one's complement) is
- performed within this function so it shouldn't be done by the application.
- Usage example:
-
- uLong crc = crc32(0L, Z_NULL, 0);
-
- while (read_buffer(buffer, length) != EOF) {
- crc = crc32(crc, buffer, length);
- }
- if (crc != original_crc) error();
-*/
-
-ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
-
-/*
- Combine two CRC-32 check values into one. For two sequences of bytes,
- seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
- calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
- check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
- len2.
-*/
-
-
- /* various hacks, don't look :) */
-
-/* deflateInit and inflateInit are macros to allow checking the zlib version
- * and the compiler's view of z_stream:
- */
-ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
- const char *version, int stream_size));
-ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
- const char *version, int stream_size));
-ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
- int windowBits, int memLevel,
- int strategy, const char *version,
- int stream_size));
-ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
- const char *version, int stream_size));
-ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
- unsigned char FAR *window,
- const char *version,
- int stream_size));
-#define deflateInit(strm, level) \
- deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))
-#define inflateInit(strm) \
- inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))
-#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
- deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
- (strategy), ZLIB_VERSION, sizeof(z_stream))
-#define inflateInit2(strm, windowBits) \
- inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
-#define inflateBackInit(strm, windowBits, window) \
- inflateBackInit_((strm), (windowBits), (window), \
- ZLIB_VERSION, sizeof(z_stream))
-
-
-#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
- struct internal_state {int dummy;}; /* hack for buggy compilers */
-#endif
-
-ZEXTERN const char * ZEXPORT zError OF((int));
-ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z));
-ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ZLIB_H */
+++ /dev/null
-/* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-
-#ifndef NO_DUMMY_DECL
-struct internal_state {int dummy;}; /* for buggy compilers */
-#endif
-
-const char * const z_errmsg[10] = {
-"need dictionary", /* Z_NEED_DICT 2 */
-"stream end", /* Z_STREAM_END 1 */
-"", /* Z_OK 0 */
-"file error", /* Z_ERRNO (-1) */
-"stream error", /* Z_STREAM_ERROR (-2) */
-"data error", /* Z_DATA_ERROR (-3) */
-"insufficient memory", /* Z_MEM_ERROR (-4) */
-"buffer error", /* Z_BUF_ERROR (-5) */
-"incompatible version",/* Z_VERSION_ERROR (-6) */
-""};
-
-
-const char * ZEXPORT zlibVersion()
-{
- return ZLIB_VERSION;
-}
-
-uLong ZEXPORT zlibCompileFlags()
-{
- uLong flags;
-
- flags = 0;
- switch (sizeof(uInt)) {
- case 2: break;
- case 4: flags += 1; break;
- case 8: flags += 2; break;
- default: flags += 3;
- }
- switch (sizeof(uLong)) {
- case 2: break;
- case 4: flags += 1 << 2; break;
- case 8: flags += 2 << 2; break;
- default: flags += 3 << 2;
- }
- switch (sizeof(voidpf)) {
- case 2: break;
- case 4: flags += 1 << 4; break;
- case 8: flags += 2 << 4; break;
- default: flags += 3 << 4;
- }
- switch (sizeof(z_off_t)) {
- case 2: break;
- case 4: flags += 1 << 6; break;
- case 8: flags += 2 << 6; break;
- default: flags += 3 << 6;
- }
-#ifdef DEBUG
- flags += 1 << 8;
-#endif
-#if defined(ASMV) || defined(ASMINF)
- flags += 1 << 9;
-#endif
-#ifdef ZLIB_WINAPI
- flags += 1 << 10;
-#endif
-#ifdef BUILDFIXED
- flags += 1 << 12;
-#endif
-#ifdef DYNAMIC_CRC_TABLE
- flags += 1 << 13;
-#endif
-#ifdef NO_GZCOMPRESS
- flags += 1L << 16;
-#endif
-#ifdef NO_GZIP
- flags += 1L << 17;
-#endif
-#ifdef PKZIP_BUG_WORKAROUND
- flags += 1L << 20;
-#endif
-#ifdef FASTEST
- flags += 1L << 21;
-#endif
-#ifdef STDC
-# ifdef NO_vsnprintf
- flags += 1L << 25;
-# ifdef HAS_vsprintf_void
- flags += 1L << 26;
-# endif
-# else
-# ifdef HAS_vsnprintf_void
- flags += 1L << 26;
-# endif
-# endif
-#else
- flags += 1L << 24;
-# ifdef NO_snprintf
- flags += 1L << 25;
-# ifdef HAS_sprintf_void
- flags += 1L << 26;
-# endif
-# else
-# ifdef HAS_snprintf_void
- flags += 1L << 26;
-# endif
-# endif
-#endif
- return flags;
-}
-
-#ifdef DEBUG
-
-# ifndef verbose
-# define verbose 0
-# endif
-int z_verbose = verbose;
-
-void z_error (m)
- char *m;
-{
- fprintf(stderr, "%s\n", m);
- exit(1);
-}
-#endif
-
-/* exported to allow conversion of error code to string for compress() and
- * uncompress()
- */
-const char * ZEXPORT zError(err)
- int err;
-{
- return ERR_MSG(err);
-}
-
-#if defined(_WIN32_WCE)
- /* The Microsoft C Run-Time Library for Windows CE doesn't have
- * errno. We define it as a global variable to simplify porting.
- * Its value is always 0 and should not be used.
- */
- int errno = 0;
-#endif
-
-#ifndef HAVE_MEMCPY
-
-void zmemcpy(dest, source, len)
- Bytef* dest;
- const Bytef* source;
- uInt len;
-{
- if (len == 0) return;
- do {
- *dest++ = *source++; /* ??? to be unrolled */
- } while (--len != 0);
-}
-
-int zmemcmp(s1, s2, len)
- const Bytef* s1;
- const Bytef* s2;
- uInt len;
-{
- uInt j;
-
- for (j = 0; j < len; j++) {
- if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
- }
- return 0;
-}
-
-void zmemzero(dest, len)
- Bytef* dest;
- uInt len;
-{
- if (len == 0) return;
- do {
- *dest++ = 0; /* ??? to be unrolled */
- } while (--len != 0);
-}
-#endif
-
-
-#ifdef SYS16BIT
-
-#ifdef __TURBOC__
-/* Turbo C in 16-bit mode */
-
-# define MY_ZCALLOC
-
-/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
- * and farmalloc(64K) returns a pointer with an offset of 8, so we
- * must fix the pointer. Warning: the pointer must be put back to its
- * original form in order to free it, use zcfree().
- */
-
-#define MAX_PTR 10
-/* 10*64K = 640K */
-
-local int next_ptr = 0;
-
-typedef struct ptr_table_s {
- voidpf org_ptr;
- voidpf new_ptr;
-} ptr_table;
-
-local ptr_table table[MAX_PTR];
-/* This table is used to remember the original form of pointers
- * to large buffers (64K). Such pointers are normalized with a zero offset.
- * Since MSDOS is not a preemptive multitasking OS, this table is not
- * protected from concurrent access. This hack doesn't work anyway on
- * a protected system like OS/2. Use Microsoft C instead.
- */
-
-voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
-{
- voidpf buf = opaque; /* just to make some compilers happy */
- ulg bsize = (ulg)items*size;
-
- /* If we allocate less than 65520 bytes, we assume that farmalloc
- * will return a usable pointer which doesn't have to be normalized.
- */
- if (bsize < 65520L) {
- buf = farmalloc(bsize);
- if (*(ush*)&buf != 0) return buf;
- } else {
- buf = farmalloc(bsize + 16L);
- }
- if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
- table[next_ptr].org_ptr = buf;
-
- /* Normalize the pointer to seg:0 */
- *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
- *(ush*)&buf = 0;
- table[next_ptr++].new_ptr = buf;
- return buf;
-}
-
-void zcfree (voidpf opaque, voidpf ptr)
-{
- int n;
- if (*(ush*)&ptr != 0) { /* object < 64K */
- farfree(ptr);
- return;
- }
- /* Find the original pointer */
- for (n = 0; n < next_ptr; n++) {
- if (ptr != table[n].new_ptr) continue;
-
- farfree(table[n].org_ptr);
- while (++n < next_ptr) {
- table[n-1] = table[n];
- }
- next_ptr--;
- return;
- }
- ptr = opaque; /* just to make some compilers happy */
- Assert(0, "zcfree: ptr not found");
-}
-
-#endif /* __TURBOC__ */
-
-
-#ifdef M_I86
-/* Microsoft C in 16-bit mode */
-
-# define MY_ZCALLOC
-
-#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
-# define _halloc halloc
-# define _hfree hfree
-#endif
-
-voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
-{
- if (opaque) opaque = 0; /* to make compiler happy */
- return _halloc((long)items, size);
-}
-
-void zcfree (voidpf opaque, voidpf ptr)
-{
- if (opaque) opaque = 0; /* to make compiler happy */
- _hfree(ptr);
-}
-
-#endif /* M_I86 */
-
-#endif /* SYS16BIT */
-
-
-#ifndef MY_ZCALLOC /* Any system without a special alloc function */
-
-#ifndef STDC
-extern voidp malloc OF((uInt size));
-extern voidp calloc OF((uInt items, uInt size));
-extern void free OF((voidpf ptr));
-#endif
-
-voidpf zcalloc (opaque, items, size)
- voidpf opaque;
- unsigned items;
- unsigned size;
-{
- if (opaque) items += size - size; /* make compiler happy */
- return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
- (voidpf)calloc(items, size);
-}
-
-void zcfree (opaque, ptr)
- voidpf opaque;
- voidpf ptr;
-{
- free(ptr);
- if (opaque) return; /* make compiler happy */
-}
-
-#endif /* MY_ZCALLOC */
+++ /dev/null
-/* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZUTIL_H
-#define ZUTIL_H
-
-#define ZLIB_INTERNAL
-#include "zlib.h"
-
-#ifdef STDC
-# ifndef _WIN32_WCE
-# include <stddef.h>
-# endif
-# include <string.h>
-# include <stdlib.h>
-#endif
-#ifdef NO_ERRNO_H
-# ifdef _WIN32_WCE
- /* The Microsoft C Run-Time Library for Windows CE doesn't have
- * errno. We define it as a global variable to simplify porting.
- * Its value is always 0 and should not be used. We rename it to
- * avoid conflict with other libraries that use the same workaround.
- */
-# define errno z_errno
-# endif
- extern int errno;
-#else
-# ifndef _WIN32_WCE
-# include <errno.h>
-# endif
-#endif
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-typedef unsigned char uch;
-typedef uch FAR uchf;
-typedef unsigned short ush;
-typedef ush FAR ushf;
-typedef unsigned long ulg;
-
-extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
-/* (size given to avoid silly warnings with Visual C++) */
-
-#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
-
-#define ERR_RETURN(strm,err) \
- return (strm->msg = ERR_MSG(err), (err))
-/* To be used only when the state is known to be valid */
-
- /* common constants */
-
-#ifndef DEF_WBITS
-# define DEF_WBITS MAX_WBITS
-#endif
-/* default windowBits for decompression. MAX_WBITS is for compression only */
-
-#if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-#else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-#endif
-/* default memLevel */
-
-#define STORED_BLOCK 0
-#define STATIC_TREES 1
-#define DYN_TREES 2
-/* The three kinds of block type */
-
-#define MIN_MATCH 3
-#define MAX_MATCH 258
-/* The minimum and maximum match lengths */
-
-#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
-
- /* target dependencies */
-
-#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
-# define OS_CODE 0x00
-# if defined(__TURBOC__) || defined(__BORLANDC__)
-# if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
- /* Allow compilation with ANSI keywords only enabled */
- void _Cdecl farfree( void *block );
- void *_Cdecl farmalloc( unsigned long nbytes );
-# else
-# include <alloc.h>
-# endif
-# else /* MSC or DJGPP */
-# include <malloc.h>
-# endif
-#endif
-
-#ifdef AMIGA
-# define OS_CODE 0x01
-#endif
-
-#if defined(VAXC) || defined(VMS)
-# define OS_CODE 0x02
-# define F_OPEN(name, mode) \
- fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
-#endif
-
-#if defined(ATARI) || defined(atarist)
-# define OS_CODE 0x05
-#endif
-
-#ifdef OS2
-# define OS_CODE 0x06
-# ifdef M_I86
- #include <malloc.h>
-# endif
-#endif
-
-#if defined(MACOS) || defined(TARGET_OS_MAC)
-# define OS_CODE 0x07
-# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-# include <unix.h> /* for fdopen */
-# else
-# ifndef fdopen
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# endif
-# endif
-#endif
-
-#ifdef TOPS20
-# define OS_CODE 0x0a
-#endif
-
-#ifdef WIN32
-# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
-# define OS_CODE 0x0b
-# endif
-#endif
-
-#ifdef __50SERIES /* Prime/PRIMOS */
-# define OS_CODE 0x0f
-#endif
-
-#if defined(_BEOS_) || defined(RISCOS)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-#endif
-
-#if (defined(_MSC_VER) && (_MSC_VER > 600))
-# if defined(_WIN32_WCE)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# ifndef _PTRDIFF_T_DEFINED
- typedef int ptrdiff_t;
-# define _PTRDIFF_T_DEFINED
-# endif
-# else
-# define fdopen(fd,type) _fdopen(fd,type)
-# endif
-#endif
-
- /* common defaults */
-
-#ifndef OS_CODE
-# define OS_CODE 0x03 /* assume Unix */
-#endif
-
-#ifndef F_OPEN
-# define F_OPEN(name, mode) fopen((name), (mode))
-#endif
-
- /* functions */
-
-#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
-# ifndef HAVE_VSNPRINTF
-# define HAVE_VSNPRINTF
-# endif
-#endif
-#if defined(__CYGWIN__)
-# ifndef HAVE_VSNPRINTF
-# define HAVE_VSNPRINTF
-# endif
-#endif
-#ifndef HAVE_VSNPRINTF
-# ifdef MSDOS
- /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
- but for now we just assume it doesn't. */
-# define NO_vsnprintf
-# endif
-# ifdef __TURBOC__
-# define NO_vsnprintf
-# endif
-# ifdef WIN32
- /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
-# if !defined(vsnprintf) && !defined(NO_vsnprintf)
-# define vsnprintf _vsnprintf
-# endif
-# endif
-# ifdef __SASC
-# define NO_vsnprintf
-# endif
-#endif
-#ifdef VMS
-# define NO_vsnprintf
-#endif
-
-#if defined(pyr)
-# define NO_MEMCPY
-#endif
-#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
- /* Use our own functions for small and medium model with MSC <= 5.0.
- * You may have to use the same strategy for Borland C (untested).
- * The __SC__ check is for Symantec.
- */
-# define NO_MEMCPY
-#endif
-#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
-# define HAVE_MEMCPY
-#endif
-#ifdef HAVE_MEMCPY
-# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
-# define zmemcpy _fmemcpy
-# define zmemcmp _fmemcmp
-# define zmemzero(dest, len) _fmemset(dest, 0, len)
-# else
-# define zmemcpy memcpy
-# define zmemcmp memcmp
-# define zmemzero(dest, len) memset(dest, 0, len)
-# endif
-#else
- extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
- extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
- extern void zmemzero OF((Bytef* dest, uInt len));
-#endif
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# include <stdio.h>
- extern int z_verbose;
- extern void z_error OF((char *m));
-# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
-# define Trace(x) {if (z_verbose>=0) fprintf x ;}
-# define Tracev(x) {if (z_verbose>0) fprintf x ;}
-# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-
-voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
-void zcfree OF((voidpf opaque, voidpf ptr));
-
-#define ZALLOC(strm, items, size) \
- (*((strm)->zalloc))((strm)->opaque, (items), (size))
-#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
-#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
-
-#endif /* ZUTIL_H */
git.samba.org / vlendec / samba-autobuild / .git / commitdiff