-#!/usr/bin/perl
-
-# mksigs.pl - extract signatures from C headers
-#
-# Copyright (C) Michael Adam 2009
-#
-# This program 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 3 of the License, or (at your option)
-# any later version.
-#
-# This program 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 program; if not, see <http://www.gnu.org/licenses/>.
-
-# USAGE: cat $header_files | mksigs.pl > $signature_file
-#
-# The header files to parse are read from stdin.
-# The output is in a form as produced by gcc with the -aux-info switch
-# and printed to stdout.
-
-use strict;
-use warnings;
-
-my $in_comment = 0;
-my $in_doxygen = 0;
-my $extern_C_block = 0;
-
-while (my $LINE = <>) {
- # find end of started multi-line-comment
- if ($in_comment) {
- if ($LINE =~ /^.*?\*\/(.*)$/) {
- $LINE = $1;
- $in_comment = 0;
- } else {
- # whole line within comment
- next;
- }
- }
-
- # find end of DOXYGEN section
- if ($in_doxygen) {
- if ($LINE =~ /^#\s*else(?:\s+.*)?$/) {
- $in_doxygen = 0;
- }
- next;
- }
-
- # strip C++-style comments
- $LINE =~ s/^(.*?)\/\/.*$/$1/;
-
- # strip in-line-comments:
- while ($LINE =~ /\/\*.*?\*\//) {
- $LINE =~ s/\/\*.*?\*\///;
- }
-
- # find starts of multi-line-comments
- if ($LINE =~ /^(.*)\/\*/) {
- $in_comment = 1;
- $LINE = $1;
- }
-
- # skip empty lines
- next if $LINE =~ /^\s*$/;
-
- # remove leading spaces
- $LINE =~ s/^\s*(.*)$/$1/;
-
- # concatenate lines split with "\" (usually macro defines)
- while ($LINE =~ /^(.*?)\s+\\$/) {
- my $LINE2 = <>;
- $LINE = $1;
- $LINE2 =~ s/^\s*(.*)$/$1/;
- $LINE .= " " . $LINE2;
- }
-
- # remove DOXYGEN sections
- if ($LINE =~ /^#\s*ifdef\s+DOXYGEN(?:\s+.*)?$/) {
- $in_doxygen = 1;
- next;
- }
-
-
- # remove all preprocessor directives
- next if ($LINE =~ /^#/);
-
- if ($LINE =~ /^extern\s+"C"\s+\{/) {
- $extern_C_block = 1;
- next;
- }
-
- if (($LINE =~ /^[^\{]*\}/) and $extern_C_block) {
- $extern_C_block = 0;
- next;
- }
-
- $LINE =~ s/^extern\s//;
-
- # concatenate braces stretched over multiple lines
- # (from structs or enums)
- my $REST = $LINE;
- my $braces = 0;
- while (($REST =~ /[\{\}]/) or ($braces)) {
- while ($REST =~ /[\{\}]/) {
- # collect opening
- while ($REST =~ /^[^\{\}]*\{(.*)$/) {
- $braces++;
- $REST = $1;
- }
-
- # collect closing
- while ($REST =~ /^[^\{\}]*\}(.*)$/) {
- $braces--;
- $REST = $1;
- }
- }
-
- # concatenate if not balanced
- if ($braces) {
- if (my $LINE2 = <>) {
- $LINE2 =~ s/^\s*(.*)$/$1/;
- chomp($LINE);
- $LINE .= " " . $LINE2;
- chomp $REST;
- $REST .= " " . $LINE2;
- } else {
- print "ERROR: unbalanced braces ($braces)\n";
- last;
- }
- }
- }
-
- # concetenate function prototypes that stretch over multiple lines
- $REST = $LINE;
- my $parenthesis = 0;
- while (($REST =~ /[\(\)]/) or ($parenthesis)) {
- while ($REST =~ /[\(\)]/) {
- # collect opening
- while ($REST =~ /^[^\(\)]*\((.*)$/) {
- $parenthesis++;
- $REST = $1;
- }
-
- # collect closing
- while ($REST =~ /^[^\(\)]*\)(.*)$/) {
- $parenthesis--;
- $REST = $1;
- }
- }
-
- # concatenate if not balanced
- if ($parenthesis) {
- if (my $LINE2 = <>) {
- $LINE2 =~ s/^\s*(.*)$/$1/;
- chomp($LINE);
- $LINE .= " " . $LINE2;
- chomp($REST);
- $REST .= " " . $LINE2;
- } else {
- print "ERROR: unbalanced parantheses ($parenthesis)\n";
- last;
- }
- }
- }
-
- next if ($LINE =~ /^typedef\s/);
- next if ($LINE =~ /^enum\s+[^\{\(]+\s+\{/);
- next if ($LINE =~ /^struct\s+[^\{\(]+\s+\{.*\}\s*;/);
- next if ($LINE =~ /^struct\s+[a-zA-Z0-9_]+\s*;/);
-
- # remove trailing spaces
- $LINE =~ s/(.*?)\s*$/$1/;
-
- $LINE =~ s/^(.*\))\s+PRINTF_ATTRIBUTE\([^\)]*\)(\s*[;,])/$1$2/;
- $LINE =~ s/^(.*\))\s*[a-zA-Z0-9_]+\s*;$/$1;/;
-
- # remove parameter names - slightly too coarse probably
- $LINE =~ s/([\s\(]\*?)[_0-9a-zA-Z]+\s*([,\)])/$1$2/g;
-
- # remedy (void) from last line
- $LINE =~ s/\(\)/(void)/g;
-
- # normalize spaces
- $LINE =~ s/\s*\)\s*/)/g;
- $LINE =~ s/\s*\(\s*/ (/g;
- $LINE =~ s/\s*,\s*/, /g;
-
- # normalize unsigned
- $LINE =~ s/([\s,\(])unsigned([,\)])/$1unsigned int$2/g;
-
- # normalize bool
- $LINE =~ s/(\b)bool(\b)/_Bool/g;
-
- print $LINE . "\n";
-}
git.samba.org / kai / samba.git / commitdiff