make-version.pl

   1 #!/usr/bin/perl -w
   2 #
   3 # Copyright 2004 Jörg Mayer (see AUTHORS file)
   4 #
   5 # Wireshark - Network traffic analyzer
   6 # By Gerald Combs <gerald@wireshark.org>
   7 # Copyright 1998 Gerald Combs
   8 #
   9 # This program is free software; you can redistribute it and/or
  10 # modify it under the terms of the GNU General Public License
  11 # as published by the Free Software Foundation; either version 2
  12 # of the License, or (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program; if not, write to the Free Software
  21 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  22
  23 # See below for usage
  24 #
  25 # If "version.conf" is present, it is parsed for configuration values.
  26 # Possible values are:
  27 #
  28 #   enable     - Enable or disable versioning.  Zero (0) disables, nonzero
  29 #                enables.
  30 #   svn_client - Use svn client i.s.o. ugly internal SVN file hack
  31 #   format     - A strftime() formatted string to use as a template for
  32 #                the version string. The sequence "%#" will substitute
  33 #                the SVN revision number.
  34 #   pkg_enable - Enable or disable local package versioning.
  35 #   pkg_format - Like "format", but used for the local package version.
  36 #
  37 # If run with the "-r" or "--set-release" argument the AC_INIT macro in
  38 # configure.ac and the VERSION macro in config.nmake will have the
  39 # pkg_format template appended to the version number. version.h will
  40 # _not_ be generated if either argument is present.
  41 #
  42 # Default configuration:
  43 #
  44 # enable: 1
  45 # svn_client: 1
  46 # format: SVN %Y%m%d%H%M%S
  47 # pkg_enable: 1
  48 # pkg_format: -%#
  49
  50 # XXX - We're pretty dumb about the "%#" substitution, and about having
  51 # spaces in the package format.
  52
  53 use strict;
  54
  55 use Time::Local;
  56 use File::Basename;
  57 use POSIX qw(strftime);
  58 use Getopt::Long;
  59 use Pod::Usage;
  60 use IO::Handle;
  61 use English;
  62
  63 my $version_file = 'version.h';
  64 my $package_string = "";
  65 my $vconf_file = 'version.conf';
  66 my $tortoise_file = "tortoise_template";
  67 my $last_change = 0;
  68 my $num_commits = 0;
  69 my $commit_id = '';
  70 my $repo_branch = "unknown";
  71 my $git_description = undef;
  72 my $get_svn = 0;
  73 my $set_svn = 0;
  74 my $set_version = 0;
  75 my $set_release = 0;
  76 my %version_pref = (
  77         "version_major" => 1,
  78         "version_minor" => 99,
  79         "version_micro" => 2,
  80         "version_build" => 0,
  81
  82         "enable"        => 1,
  83         "git_client"    => 0,
  84         "svn_client"    => 1,
  85         "tortoise_svn"  => 0,
  86         "format"        => "git %Y%m%d%H%M%S",
  87         "is_release"    => 0,
  88
  89         # Normal development builds
  90         "pkg_enable" => 1,
  91         "pkg_format" => "-%#",
  92
  93         # Development releases
  94         #"pkg_enable" => 0,
  95         #"pkg_format" => "",
  96         );
  97 my $srcdir = ".";
  98 my $info_cmd = "";
  99
 100 # Ensure we run with correct locale
 101 $ENV{LANG} = "C";
 102 $ENV{LC_ALL} = "C";
 103 $ENV{GIT_PAGER} = "";
 104
 105 # Run "svn info".  Parse out the most recent modification time and the
 106 # revision number.
 107 sub read_repo_info {
 108         my $line;
 109         my $version_format = $version_pref{"format"};
 110         my $package_format = "";
 111         my $in_entries = 0;
 112         my $svn_name;
 113         my $repo_version;
 114         my $repo_root = undef;
 115         my $repo_url = undef;
 116         my $do_hack = 1;
 117         my $info_source = "Unknown";
 118
 119         if ($version_pref{"pkg_enable"} > 0) {
 120                 $package_format = $version_pref{"pkg_format"};
 121         }
 122
 123         if (-d "$srcdir/.git" && ! -d "$srcdir/.git/svn") {
 124                 $info_source = "Command line (git)";
 125                 $version_pref{"git_client"} = 1;
 126         } elsif (-d "$srcdir/.svn" or -d "$srcdir/../.svn") {
 127                 $info_source = "Command line (svn info)";
 128                 $info_cmd = "svn info $srcdir";
 129         } elsif (-d "$srcdir/.git/svn") {
 130                 $info_source = "Command line (git-svn)";
 131                 $info_cmd = "(cd $srcdir; git svn info)";
 132         }
 133
 134         #Git can give us:
 135         #
 136         # A big ugly hash: git rev-parse HEAD
 137         # 1ddc83849075addb0cac69a6fe3782f4325337b9
 138         #
 139         # A small ugly hash: git rev-parse --short HEAD
 140         # 1ddc838
 141         #
 142         # The upstream branch path: git rev-parse --abbrev-ref --symbolic-full-name @{upstream}
 143         # origin/master
 144         #
 145         # A version description: git describe --tags --dirty
 146         # wireshark-1.8.12-15-g1ddc838
 147         #
 148         # Number of commits in this branch: git rev-list --count HEAD
 149         # 48879
 150         #
 151         # Number of commits since 1.8.0: git rev-list --count 5e212d72ce098a7fec4332cbe6c22fcda796a018..HEAD
 152         # 320
 153         #
 154         # Refs: git ls-remote code.wireshark.org:wireshark
 155         # ea19c7f952ce9fc53fe4c223f1d9d6797346258b (r48972, changed version to 1.11.0)
 156
 157         if ($version_pref{"git_client"}) {
 158                 eval {
 159                         use warnings "all";
 160                         no warnings "all";
 161
 162                         chomp($line = qx{git --git-dir=$srcdir/.git log -1 --pretty=format:%at});
 163                         if ($? == 0 && length($line) > 1) {
 164                                 $last_change = $line;
 165                         }
 166
 167                         # Commits since last annotated tag.
 168                         chomp($line = qx{git --git-dir=$srcdir/.git describe --long --always --match "v*"});
 169                         if ($? == 0 && length($line) > 1) {
 170                                 my @parts = split(/-/, $line);
 171                                 $git_description = $line;
 172                                 $num_commits = $parts[-2];
 173                                 $commit_id = $parts[-1];
 174                         }
 175
 176                         chomp($line = qx{git --git-dir=$srcdir/.git ls-remote --get-url origin});
 177                         if (defined($line)) {
 178                                 $repo_url = $line;
 179                         }
 180
 181                         # This will break in some cases. Hopefully not during
 182                         # official package builds.
 183                         chomp($line = qx{git --git-dir=$srcdir/.git rev-parse --abbrev-ref --symbolic-full-name \@\{upstream\}});
 184                         if ($? == 0 && length($line) > 1) {
 185                                 $repo_branch = basename($line);
 186                         }
 187
 188                         1;
 189                 };
 190
 191                 if ($last_change && $num_commits && $repo_url && $repo_branch) {
 192                         $do_hack = 0;
 193                 }
 194         } elsif ($version_pref{"svn_client"}) {
 195                 eval {
 196                         use warnings "all";
 197                         no warnings "all";
 198                         $line = qx{$info_cmd};
 199                         if (defined($line)) {
 200                                 if ($line =~ /Last Changed Date: (\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
 201                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 202                                 }
 203                                 if ($line =~ /Last Changed Rev: (\d+)/) {
 204                                         $num_commits = $1;
 205                                 }
 206                                 if ($line =~ /URL: (\S+)/) {
 207                                         $repo_url = $1;
 208                                 }
 209                                 if ($line =~ /Repository Root: (\S+)/) {
 210                                         $repo_root = $1;
 211                                 }
 212                         }
 213                         1;
 214                 };
 215
 216                 if ($last_change && $num_commits && $repo_url && $repo_root) {
 217                         $do_hack = 0;
 218                 }
 219         } elsif ($version_pref{"tortoise_svn"}) {
 220                 # Dynamically generic template file needed by TortoiseSVN
 221                 open(TORTOISE, ">$tortoise_file");
 222                 print TORTOISE "#define GITVERSION \"\$WCREV\$\"\r\n";
 223                 print TORTOISE "#define GITBRANCH \"\$WCURL\$\"\r\n";
 224                 close(TORTOISE);
 225
 226                 $info_source = "Command line (SubWCRev)";
 227                 $info_cmd = "SubWCRev $srcdir $tortoise_file $version_file";
 228                 my $tortoise = system($info_cmd);
 229                 if ($tortoise == 0) {
 230                         $do_hack = 0;
 231                 }
 232
 233                 #clean up the template file
 234                 unlink($tortoise_file);
 235         }
 236
 237         if ($num_commits == 0) {
 238                 # Fall back to config.nmake
 239                 $info_source = "Prodding config.nmake";
 240                 my $filepath = "$srcdir/config.nmake";
 241                 open(CFGNMAKE, "< $filepath") || die "Can't read $filepath!";
 242                 while ($line = <CFGNMAKE>) {
 243                         if ($line =~ /^GIT_REVISION=(\d+)/) {
 244                                 $num_commits = $1;
 245                                 $do_hack = 0;
 246                                 last;
 247                         }
 248                 }
 249                 close (CFGNMAKE);
 250         }
 251         if ($num_commits == 0 and -d "$srcdir/.git") {
 252
 253                 # Try git...
 254                 eval {
 255                         use warnings "all";
 256                         no warnings "all";
 257                         # If someone had properly tagged 1.9.0 we could also use
 258                         # "git describe --abbrev=1 --tags HEAD"
 259
 260                         $info_cmd = "(cd $srcdir; git log --format='%b' -n 1)";
 261                         $line = qx{$info_cmd};
 262                         if (defined($line)) {
 263                                 if ($line =~ /svn path=.*; revision=(\d+)/) {
 264                                         $num_commits = $1;
 265                                 }
 266                         }
 267                         $info_cmd = "(cd $srcdir; git log --format='%ad' -n 1 --date=iso)";
 268                         $line = qx{$info_cmd};
 269                         if (defined($line)) {
 270                                 if ($line =~ /(\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
 271                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 272                                 }
 273                         }
 274                         $info_cmd = "(cd $srcdir; git branch)";
 275                         $line = qx{$info_cmd};
 276                         if (defined($line)) {
 277                                 if ($line =~ /\* (\S+)/) {
 278                                         $repo_branch = $1;
 279                                 }
 280                         }
 281                         1;
 282                         };
 283         }
 284         if ($num_commits == 0 and -d "$srcdir/.bzr") {
 285
 286                 # Try bzr...
 287                 eval {
 288                         use warnings "all";
 289                         no warnings "all";
 290                         $info_cmd = "(cd $srcdir; bzr log -l 1)";
 291                         $line = qx{$info_cmd};
 292                         if (defined($line)) {
 293                                 if ($line =~ /timestamp: \S+ (\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/) {
 294                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 295                                 }
 296                                 if ($line =~ /svn revno: (\d+) \(on (\S+)\)/) {
 297                                         $num_commits = $1;
 298                                         $repo_branch = $2;
 299                                 }
 300                         }
 301                         1;
 302                         };
 303         }
 304
 305
 306         # 'svn info' failed or the user really wants us to dig around in .svn/entries
 307         if ($do_hack) {
 308                 # Start of ugly internal SVN file hack
 309                 if (! open (ENTRIES, "< $srcdir/.svn/entries")) {
 310                         print ("Unable to open $srcdir/.svn/entries\n");
 311                 } else {
 312                         $info_source = "Prodding .svn";
 313                         # We need to find out whether our parser can handle the entries file
 314                         $line = <ENTRIES>;
 315                         chomp $line;
 316                         if ($line eq '<?xml version="1.0" encoding="utf-8"?>') {
 317                                 $repo_version = "pre1.4";
 318                         } elsif ($line =~ /^8$/) {
 319                                 $repo_version = "1.4";
 320                         } else {
 321                                 $repo_version = "unknown";
 322                         }
 323
 324                         if ($repo_version eq "pre1.4") {
 325                                 # The entries schema is flat, so we can use regexes to parse its contents.
 326                                 while ($line = <ENTRIES>) {
 327                                         if ($line =~ /<entry$/ || $line =~ /<entry\s/) {
 328                                                 $in_entries = 1;
 329                                                 $svn_name = "";
 330                                         }
 331                                         if ($in_entries) {
 332                                                 if ($line =~ /name="(.*)"/) { $svn_name = $1; }
 333                                                 if ($line =~ /committed-date="(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)/) {
 334                                                         $last_change = timegm($6, $5, $4, $3, $2 - 1, $1);
 335                                                 }
 336                                                 if ($line =~ /revision="(\d+)"/) { $num_commits = $1; }
 337                                         }
 338                                         if ($line =~ /\/>/) {
 339                                                 if (($svn_name eq "" || $svn_name eq "svn:this_dir") &&
 340                                                                 $last_change && $num_commits) {
 341                                                         $in_entries = 0;
 342                                                         last;
 343                                                 }
 344                                         }
 345                                         # XXX - Fetch the repository root & URL
 346                                 }
 347                         }
 348                         close ENTRIES;
 349                 }
 350         }
 351
 352         # If we picked up the revision and modification time,
 353         # generate our strings.
 354         if ($version_pref{"pkg_enable"}) {
 355                 $version_format =~ s/%#/$num_commits/;
 356                 $package_format =~ s/%#/$num_commits-$commit_id/;
 357                 $package_string = strftime($package_format, gmtime($last_change));
 358         }
 359
 360         if ($repo_url && $repo_root && index($repo_url, $repo_root) == 0) {
 361                 $repo_branch = substr($repo_url, length($repo_root));
 362         }
 363
 364         if ($get_svn) {
 365                 print <<"Fin";
 366 Commit distance : $num_commits
 367 Commit ID       : $commit_id
 368 Revision source : $info_source
 369 Release stamp   : $package_string
 370 Fin
 371         }
 372 }
 373
 374
 375 # Read CMakeLists.txt, then write it back out with updated "set(PROJECT_..._VERSION ...)
 376 # lines
 377 # set(PROJECT_MAJOR_VERSION 1)
 378 # set(PROJECT_MINOR_VERSION 99)
 379 # set(PROJECT_PATCH_VERSION 0)
 380 # set(PROJECT_VERSION_EXTENSION "-rc5")
 381 sub update_cmakelists_txt
 382 {
 383         my $line;
 384         my $contents = "";
 385         my $version = "";
 386         my $filepath = "$srcdir/CMakeLists.txt";
 387
 388         return if (!$set_version && $package_string eq "");
 389
 390         open(CFGIN, "< $filepath") || die "Can't read $filepath!";
 391         while ($line = <CFGIN>) {
 392                 if ($line =~ /^set *\( *PROJECT_MAJOR_VERSION .*([\r\n]+)$/) {
 393                         $line = sprintf("set(PROJECT_MAJOR_VERSION %d)$1", $version_pref{"version_major"});
 394                 } elsif ($line =~ /^set *\( *PROJECT_MINOR_VERSION .*([\r\n]+)$/) {
 395                         $line = sprintf("set(PROJECT_MINOR_VERSION %d)$1", $version_pref{"version_minor"});
 396                 } elsif ($line =~ /^set *\( *PROJECT_PATCH_VERSION .*([\r\n]+)$/) {
 397                         $line = sprintf("set(PROJECT_PATCH_VERSION %d)$1", $version_pref{"version_micro"});
 398                 } elsif ($line =~ /^set *\( *PROJECT_VERSION_EXTENSION.*([\r\n]+)$/) {
 399                         $line = sprintf("set(PROJECT_VERSION_EXTENSION \"%s\")$1", $package_string);
 400                 }
 401                 $contents .= $line
 402         }
 403
 404         open(CFGIN, "> $filepath") || die "Can't write $filepath!";
 405         print(CFGIN $contents);
 406         close(CFGIN);
 407         print "$filepath has been updated.\n";
 408 }
 409
 410 # Read configure.ac, then write it back out with an updated
 411 # "AC_INIT" line.
 412 sub update_configure_ac
 413 {
 414         my $line;
 415         my $contents = "";
 416         my $version = "";
 417         my $filepath = "$srcdir/configure.ac";
 418
 419         return if (!$set_version && $package_string eq "");
 420
 421         open(CFGIN, "< $filepath") || die "Can't read $filepath!";
 422         while ($line = <CFGIN>) {
 423                 if ($line =~ /^m4_define\( *\[?version_major\]? *,.*([\r\n]+)$/) {
 424                         $line = sprintf("m4_define([version_major], [%d])$1", $version_pref{"version_major"});
 425                 } elsif ($line =~ /^m4_define\( *\[?version_minor\]? *,.*([\r\n]+)$/) {
 426                         $line = sprintf("m4_define([version_minor], [%d])$1", $version_pref{"version_minor"});
 427                 } elsif ($line =~ /^m4_define\( *\[?version_micro\]? *,.*([\r\n]+)$/) {
 428                         $line = sprintf("m4_define([version_micro], [%d])$1", $version_pref{"version_micro"});
 429                 } elsif ($line =~ /^m4_append\( *\[?version_micro_extra\]? *,.*([\r\n]+)$/) {
 430                         $line = sprintf("m4_append([version_micro_extra], [%s])$1", $package_string);
 431                 }
 432                 $contents .= $line
 433         }
 434
 435         open(CFGIN, "> $filepath") || die "Can't write $filepath!";
 436         print(CFGIN $contents);
 437         close(CFGIN);
 438         print "$filepath has been updated.\n";
 439 }
 440
 441 # Read config.nmake, then write it back out with an updated
 442 # "VERSION" line.
 443 sub update_config_nmake
 444 {
 445         my $line;
 446         my $contents = "";
 447         my $version = "";
 448         my $filepath = "$srcdir/config.nmake";
 449         my $win_package_string = "\$(WIRESHARK_VERSION_EXTRA)";
 450
 451         if ($package_string ne "") { $win_package_string = $package_string; }
 452
 453
 454         open(CFGNMAKE, "< $filepath") || die "Can't read $filepath!";
 455         while ($line = <CFGNMAKE>) {
 456                 if ($line =~ /^GIT_REVISION=.*([\r\n]+)$/) {
 457                         $line = sprintf("GIT_REVISION=%d$1", $num_commits);
 458                 } elsif ($set_version && $line =~ /^VERSION_MAJOR=.*([\r\n]+)$/) {
 459                         $line = sprintf("VERSION_MAJOR=%d$1", $version_pref{"version_major"});
 460                 } elsif ($set_version && $line =~ /^VERSION_MINOR=.*([\r\n]+)$/) {
 461                         $line = sprintf("VERSION_MINOR=%d$1", $version_pref{"version_minor"});
 462                 } elsif ($set_version && $line =~ /^VERSION_MICRO=.*([\r\n]+)$/) {
 463                         $line = sprintf("VERSION_MICRO=%d$1", $version_pref{"version_micro"});
 464                 } elsif ($line =~ /^VERSION_EXTRA=.*([\r\n]+)$/) {
 465                         $line = "VERSION_EXTRA=$win_package_string$1";
 466                 }
 467                 $contents .= $line
 468         }
 469
 470         open(CFGNMAKE, "> $filepath") || die "Can't write $filepath!";
 471         print(CFGNMAKE $contents);
 472         close(CFGNMAKE);
 473         print "$filepath has been updated.\n";
 474 }
 475
 476 # Read docbook/asciidoc.conf, then write it back out with an updated
 477 # wireshark-version replacement line.
 478 sub update_release_notes
 479 {
 480         my $line;
 481         my $contents = "";
 482         my $version = "";
 483         my $filepath = "$srcdir/docbook/asciidoc.conf";
 484
 485         return if (!$set_version);
 486
 487         open(ADOC_CONF, "< $filepath") || die "Can't read $filepath!";
 488         while ($line = <ADOC_CONF>) {
 489                 # wireshark-version:\[\]=1.9.1
 490
 491                 if ($line =~ /^wireshark-version:\\\[\\\]=.*([\r\n]+)$/) {
 492                         $line = sprintf("wireshark-version:\\\[\\\]=%d.%d.%d$1",
 493                                         $version_pref{"version_major"},
 494                                         $version_pref{"version_minor"},
 495                                         $version_pref{"version_micro"},
 496                                        );
 497                 }
 498                 $contents .= $line
 499         }
 500
 501         open(ADOC_CONF, "> $filepath") || die "Can't write $filepath!";
 502         print(ADOC_CONF $contents);
 503         close(ADOC_CONF);
 504         print "$filepath has been updated.\n";
 505 }
 506
 507 # Read debian/changelog, then write back out an updated version.
 508 sub update_debian_changelog
 509 {
 510         my $line;
 511         my $contents = "";
 512         my $version = "";
 513         my $filepath = "$srcdir/debian/changelog";
 514
 515         return if ($set_version == 0);
 516
 517         open(CHANGELOG, "< $filepath") || die "Can't read $filepath!";
 518         while ($line = <CHANGELOG>) {
 519                 if ($set_version && CHANGELOG->input_line_number() == 1) {
 520                         $line = sprintf("wireshark (%d.%d.%d) unstable; urgency=low\n",
 521                                         $version_pref{"version_major"},
 522                                         $version_pref{"version_minor"},
 523                                         $version_pref{"version_micro"},
 524                                        );
 525                 }
 526                 $contents .= $line
 527         }
 528
 529         open(CHANGELOG, "> $filepath") || die "Can't write $filepath!";
 530         print(CHANGELOG $contents);
 531         close(CHANGELOG);
 532         print "$filepath has been updated.\n";
 533 }
 534
 535 # Read Makefile.am for each library, then write back out an updated version.
 536 sub update_lib_releases
 537 {
 538         my $line;
 539         my $contents = "";
 540         my $version = "";
 541         my $filedir;
 542         my $filepath;
 543
 544         return if (!$set_version);
 545
 546         # The Libtool manual says
 547         #   "If the library source code has changed at all since the last
 548         #    update, then increment revision (‘c:r:a’ becomes ‘c:r+1:a’)."
 549         # epan changes with each minor release, almost by definition. wiretap
 550         # changes with *most* releases.
 551         #
 552         # http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
 553         for $filedir ("epan", "wiretap") {      # "wsutil"
 554                 $contents = "";
 555                 $filepath = $filedir . "/Makefile.am";
 556                 open(MAKEFILE_AM, "< $filepath") || die "Can't read $filepath!";
 557                 while ($line = <MAKEFILE_AM>) {
 558                         # libwireshark_la_LDFLAGS = -version-info 2:1:1 -export-symbols
 559
 560                         if ($line =~ /^(lib\w+_la_LDFLAGS.*version-info\s+\d+:)\d+(:\d+.*)/) {
 561                                 $line = sprintf("$1%d$2\n", $version_pref{"version_micro"});
 562                         }
 563                         $contents .= $line
 564                 }
 565
 566                 open(MAKEFILE_AM, "> $filepath") || die "Can't write $filepath!";
 567                 print(MAKEFILE_AM $contents);
 568                 close(MAKEFILE_AM);
 569                 print "$filepath has been updated.\n";
 570         }
 571 }
 572
 573 # Update distributed files that contain any version information
 574 sub update_versioned_files
 575 {
 576         &update_cmakelists_txt;
 577         &update_configure_ac;
 578         &update_config_nmake;
 579         &update_release_notes;
 580         &update_debian_changelog;
 581         &update_lib_releases;
 582 }
 583
 584 # Print the SVN version to $version_file.
 585 # Don't change the file if it is not needed.
 586 sub print_GIT_REVISION
 587 {
 588         my $GIT_REVISION;
 589         my $needs_update = 1;
 590
 591         if ($git_description) {
 592                 $GIT_REVISION = "#define GITVERSION \"" .
 593                         $git_description . "\"\n" .
 594                         "#define GITBRANCH \"" . $repo_branch . "\"\n";
 595         } elsif ($last_change && $num_commits) {
 596                 $GIT_REVISION = "#define GITVERSION \"Git Rev " .
 597                         $num_commits . "\"\n" .
 598                         "#define GITBRANCH \"" . $repo_branch . "\"\n";
 599         } else {
 600                 $GIT_REVISION = "#define GITVERSION \"Git Rev Unknown\"\n" .
 601                         "#define GITBRANCH \"unknown\"\n";
 602         }
 603         if (open(OLDREV, "<$version_file")) {
 604                 my $old_GIT_REVISION = <OLDREV> . <OLDREV>;
 605                 if ($old_GIT_REVISION eq $GIT_REVISION) {
 606                         $needs_update = 0;
 607                 }
 608                 close OLDREV;
 609         }
 610
 611         if (! $set_svn) { return; }
 612
 613         if ($needs_update) {
 614                 # print "Updating $version_file so it contains:\n$GIT_REVISION";
 615                 open(VER, ">$version_file") || die ("Cannot write to $version_file ($!)\n");
 616                 print VER "$GIT_REVISION";
 617                 close VER;
 618                 print "$version_file has been updated.\n";
 619         } else {
 620                 print "$version_file unchanged.\n";
 621         }
 622 }
 623
 624 # Read values from the configuration file, if it exists.
 625 sub get_config {
 626         my $arg;
 627         my $show_help = 0;
 628
 629         # Get our command-line args
 630         # XXX - Do we need an option to undo --set-release?
 631         GetOptions(
 632                    "help|h", \$show_help,
 633                    "get-svn|g", \$get_svn,
 634                    "set-svn|s", \$set_svn,
 635                    "set-version|v", \$set_version,
 636                    "set-release|r|package-version|p", \$set_release
 637                    ) || pod2usage(2);
 638
 639         if ($show_help) { pod2usage(1); }
 640
 641         if ( !( $show_help || $get_svn || $set_svn || $set_version || $set_release ) ) {
 642                 $set_svn = 1;
 643         }
 644
 645         if ($#ARGV >= 0) {
 646                 $srcdir = $ARGV[0]
 647         }
 648
 649         if (! open(FILE, "<$vconf_file")) {
 650                 print STDERR "Version configuration file $vconf_file not "
 651                 . "found.  Using defaults.\n";
 652                 return 1;
 653         }
 654
 655         while (<FILE>) {
 656                 s/^\s+|\s+$//g; # chomp() may not handle CR
 657                 next if (/^#/);
 658                 next unless (/^(\w+)(:|=)\s*(\S.*)/);
 659                 $version_pref{$1} = $3;
 660         }
 661         close FILE;
 662         return 1;
 663 }
 664
 665 ##
 666 ## Start of code
 667 ##
 668
 669 &get_config();
 670
 671 &read_repo_info();
 672
 673 &print_GIT_REVISION;
 674
 675 if ($set_version || $set_release) {
 676         if ($set_version) {
 677                 print "Generating version information\n";
 678         }
 679
 680         if ($version_pref{"enable"} == 0) {
 681                 print "Release information disabled in $vconf_file.\n";
 682                 $set_release = 0;
 683         }
 684
 685         if ($set_release) {
 686                 print "Generating release information\n";
 687         } else {
 688                 print "Resetting release information\n";
 689                 $num_commits = 0;
 690                 $package_string = "";
 691         }
 692
 693         &update_versioned_files;
 694 }
 695
 696 __END__
 697
 698 =head1 NAM
 699
 700 make-version.pl - Get and set build-time version information for Wireshark
 701
 702 =head1 SYNOPSIS
 703
 704 make-version.pl [options] [source directory]
 705
 706   Options:
 707
 708     --help, -h                 This help message
 709     --get-svn, -g              Print the SVN revision and source.
 710     --set-svn, -s              Set the information in version.h
 711     --set-version, -v          Set the major, minor, and micro versions in
 712                                configure.ac, config.nmake, debian/changelog,
 713                                and docbook/asciidoc.conf.
 714                                Resets the release information when used by
 715                                itself.
 716     --set-release, -r          Set the release information in configure.ac
 717                                and config.nmake
 718     --package-version, -p      Deprecated. Same as --set-release.
 719
 720 Options can be used in any combination. If none are specified B<--set-svn>
 721 is assumed.
 722
 723 =cut
 724
 725 #
 726 # Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 727 #
 728 # Local variables:
 729 # c-basic-offset: 8
 730 # tab-width: 8
 731 # indent-tabs-mode: t
 732 # End:
 733 #
 734 # vi: set shiftwidth=8 tabstop=8 noexpandtab:
 735 # :indentSize=8:tabSize=8:noTabs=false:
 736 #
 737 #