gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # assume this charset if line contains non-UTF-8 characters;
  98 # it should be valid encoding (see Encoding::Supported(3pm) for list),
  99 # for which encoding all byte sequences are valid, for example
 100 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 101 # could be even 'utf-8' for the old behavior)
 102 our $fallback_encoding = 'latin1';
 103
 104 # You define site-wide feature defaults here; override them with
 105 # $GITWEB_CONFIG as necessary.
 106 our %feature = (
 107         # feature => {
 108         #       'sub' => feature-sub (subroutine),
 109         #       'override' => allow-override (boolean),
 110         #       'default' => [ default options...] (array reference)}
 111         #
 112         # if feature is overridable (it means that allow-override has true value),
 113         # then feature-sub will be called with default options as parameters;
 114         # return value of feature-sub indicates if to enable specified feature
 115         #
 116         # if there is no 'sub' key (no feature-sub), then feature cannot be
 117         # overriden
 118         #
 119         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 120
 121         # Enable the 'blame' blob view, showing the last commit that modified
 122         # each line in the file. This can be very CPU-intensive.
 123
 124         # To enable system wide have in $GITWEB_CONFIG
 125         # $feature{'blame'}{'default'} = [1];
 126         # To have project specific config enable override in $GITWEB_CONFIG
 127         # $feature{'blame'}{'override'} = 1;
 128         # and in project config gitweb.blame = 0|1;
 129         'blame' => {
 130                 'sub' => \&feature_blame,
 131                 'override' => 0,
 132                 'default' => [0]},
 133
 134         # Enable the 'snapshot' link, providing a compressed tarball of any
 135         # tree. This can potentially generate high traffic if you have large
 136         # project.
 137
 138         # To disable system wide have in $GITWEB_CONFIG
 139         # $feature{'snapshot'}{'default'} = [undef];
 140         # To have project specific config enable override in $GITWEB_CONFIG
 141         # $feature{'snapshot'}{'override'} = 1;
 142         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 143         'snapshot' => {
 144                 'sub' => \&feature_snapshot,
 145                 'override' => 0,
 146                 #         => [content-encoding, suffix, program]
 147                 'default' => ['x-gzip', 'gz', 'gzip']},
 148
 149         # Enable text search, which will list the commits which match author,
 150         # committer or commit text to a given string.  Enabled by default.
 151         # Project specific override is not supported.
 152         'search' => {
 153                 'override' => 0,
 154                 'default' => [1]},
 155
 156         # Enable grep search, which will list the files in currently selected
 157         # tree containing the given string. Enabled by default. This can be
 158         # potentially CPU-intensive, of course.
 159
 160         # To enable system wide have in $GITWEB_CONFIG
 161         # $feature{'grep'}{'default'} = [1];
 162         # To have project specific config enable override in $GITWEB_CONFIG
 163         # $feature{'grep'}{'override'} = 1;
 164         # and in project config gitweb.grep = 0|1;
 165         'grep' => {
 166                 'override' => 0,
 167                 'default' => [1]},
 168
 169         # Enable the pickaxe search, which will list the commits that modified
 170         # a given string in a file. This can be practical and quite faster
 171         # alternative to 'blame', but still potentially CPU-intensive.
 172
 173         # To enable system wide have in $GITWEB_CONFIG
 174         # $feature{'pickaxe'}{'default'} = [1];
 175         # To have project specific config enable override in $GITWEB_CONFIG
 176         # $feature{'pickaxe'}{'override'} = 1;
 177         # and in project config gitweb.pickaxe = 0|1;
 178         'pickaxe' => {
 179                 'sub' => \&feature_pickaxe,
 180                 'override' => 0,
 181                 'default' => [1]},
 182
 183         # Make gitweb use an alternative format of the URLs which can be
 184         # more readable and natural-looking: project name is embedded
 185         # directly in the path and the query string contains other
 186         # auxiliary information. All gitweb installations recognize
 187         # URL in either format; this configures in which formats gitweb
 188         # generates links.
 189
 190         # To enable system wide have in $GITWEB_CONFIG
 191         # $feature{'pathinfo'}{'default'} = [1];
 192         # Project specific override is not supported.
 193
 194         # Note that you will need to change the default location of CSS,
 195         # favicon, logo and possibly other files to an absolute URL. Also,
 196         # if gitweb.cgi serves as your indexfile, you will need to force
 197         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 198         'pathinfo' => {
 199                 'override' => 0,
 200                 'default' => [0]},
 201
 202         # Make gitweb consider projects in project root subdirectories
 203         # to be forks of existing projects. Given project $projname.git,
 204         # projects matching $projname/*.git will not be shown in the main
 205         # projects list, instead a '+' mark will be added to $projname
 206         # there and a 'forks' view will be enabled for the project, listing
 207         # all the forks. If project list is taken from a file, forks have
 208         # to be listed after the main project.
 209
 210         # To enable system wide have in $GITWEB_CONFIG
 211         # $feature{'forks'}{'default'} = [1];
 212         # Project specific override is not supported.
 213         'forks' => {
 214                 'override' => 0,
 215                 'default' => [0]},
 216 );
 217
 218 sub gitweb_check_feature {
 219         my ($name) = @_;
 220         return unless exists $feature{$name};
 221         my ($sub, $override, @defaults) = (
 222                 $feature{$name}{'sub'},
 223                 $feature{$name}{'override'},
 224                 @{$feature{$name}{'default'}});
 225         if (!$override) { return @defaults; }
 226         if (!defined $sub) {
 227                 warn "feature $name is not overrideable";
 228                 return @defaults;
 229         }
 230         return $sub->(@defaults);
 231 }
 232
 233 sub feature_blame {
 234         my ($val) = git_get_project_config('blame', '--bool');
 235
 236         if ($val eq 'true') {
 237                 return 1;
 238         } elsif ($val eq 'false') {
 239                 return 0;
 240         }
 241
 242         return $_[0];
 243 }
 244
 245 sub feature_snapshot {
 246         my ($ctype, $suffix, $command) = @_;
 247
 248         my ($val) = git_get_project_config('snapshot');
 249
 250         if ($val eq 'gzip') {
 251                 return ('x-gzip', 'gz', 'gzip');
 252         } elsif ($val eq 'bzip2') {
 253                 return ('x-bzip2', 'bz2', 'bzip2');
 254         } elsif ($val eq 'zip') {
 255                 return ('x-zip', 'zip', '');
 256         } elsif ($val eq 'none') {
 257                 return ();
 258         }
 259
 260         return ($ctype, $suffix, $command);
 261 }
 262
 263 sub gitweb_have_snapshot {
 264         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 265         my $have_snapshot = (defined $ctype && defined $suffix);
 266
 267         return $have_snapshot;
 268 }
 269
 270 sub feature_grep {
 271         my ($val) = git_get_project_config('grep', '--bool');
 272
 273         if ($val eq 'true') {
 274                 return (1);
 275         } elsif ($val eq 'false') {
 276                 return (0);
 277         }
 278
 279         return ($_[0]);
 280 }
 281
 282 sub feature_pickaxe {
 283         my ($val) = git_get_project_config('pickaxe', '--bool');
 284
 285         if ($val eq 'true') {
 286                 return (1);
 287         } elsif ($val eq 'false') {
 288                 return (0);
 289         }
 290
 291         return ($_[0]);
 292 }
 293
 294 # checking HEAD file with -e is fragile if the repository was
 295 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 296 # and then pruned.
 297 sub check_head_link {
 298         my ($dir) = @_;
 299         my $headfile = "$dir/HEAD";
 300         return ((-e $headfile) ||
 301                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 302 }
 303
 304 sub check_export_ok {
 305         my ($dir) = @_;
 306         return (check_head_link($dir) &&
 307                 (!$export_ok || -e "$dir/$export_ok"));
 308 }
 309
 310 # rename detection options for git-diff and git-diff-tree
 311 # - default is '-M', with the cost proportional to
 312 #   (number of removed files) * (number of new files).
 313 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 314 #   (number of changed files + number of removed files) * (number of new files)
 315 # - even more costly is '-C', '--find-copies-harder' with cost
 316 #   (number of files in the original tree) * (number of new files)
 317 # - one might want to include '-B' option, e.g. '-B', '-M'
 318 our @diff_opts = ('-M'); # taken from git_commit
 319
 320 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 321 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 322
 323 # version of the core git binary
 324 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 325
 326 $projects_list ||= $projectroot;
 327
 328 # ======================================================================
 329 # input validation and dispatch
 330 our $action = $cgi->param('a');
 331 if (defined $action) {
 332         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 333                 die_error(undef, "Invalid action parameter");
 334         }
 335 }
 336
 337 # parameters which are pathnames
 338 our $project = $cgi->param('p');
 339 if (defined $project) {
 340         if (!validate_pathname($project) ||
 341             !(-d "$projectroot/$project") ||
 342             !check_head_link("$projectroot/$project") ||
 343             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 344             ($strict_export && !project_in_list($project))) {
 345                 undef $project;
 346                 die_error(undef, "No such project");
 347         }
 348 }
 349
 350 our $file_name = $cgi->param('f');
 351 if (defined $file_name) {
 352         if (!validate_pathname($file_name)) {
 353                 die_error(undef, "Invalid file parameter");
 354         }
 355 }
 356
 357 our $file_parent = $cgi->param('fp');
 358 if (defined $file_parent) {
 359         if (!validate_pathname($file_parent)) {
 360                 die_error(undef, "Invalid file parent parameter");
 361         }
 362 }
 363
 364 # parameters which are refnames
 365 our $hash = $cgi->param('h');
 366 if (defined $hash) {
 367         if (!validate_refname($hash)) {
 368                 die_error(undef, "Invalid hash parameter");
 369         }
 370 }
 371
 372 our $hash_parent = $cgi->param('hp');
 373 if (defined $hash_parent) {
 374         if (!validate_refname($hash_parent)) {
 375                 die_error(undef, "Invalid hash parent parameter");
 376         }
 377 }
 378
 379 our $hash_base = $cgi->param('hb');
 380 if (defined $hash_base) {
 381         if (!validate_refname($hash_base)) {
 382                 die_error(undef, "Invalid hash base parameter");
 383         }
 384 }
 385
 386 our $hash_parent_base = $cgi->param('hpb');
 387 if (defined $hash_parent_base) {
 388         if (!validate_refname($hash_parent_base)) {
 389                 die_error(undef, "Invalid hash parent base parameter");
 390         }
 391 }
 392
 393 # other parameters
 394 our $page = $cgi->param('pg');
 395 if (defined $page) {
 396         if ($page =~ m/[^0-9]/) {
 397                 die_error(undef, "Invalid page parameter");
 398         }
 399 }
 400
 401 our $searchtype = $cgi->param('st');
 402 if (defined $searchtype) {
 403         if ($searchtype =~ m/[^a-z]/) {
 404                 die_error(undef, "Invalid searchtype parameter");
 405         }
 406 }
 407
 408 our $searchtext = $cgi->param('s');
 409 our $search_regexp;
 410 if (defined $searchtext) {
 411         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 412                 die_error(undef, "Invalid search parameter");
 413         }
 414         if (length($searchtext) < 2) {
 415                 die_error(undef, "At least two characters are required for search parameter");
 416         }
 417         $search_regexp = quotemeta $searchtext;
 418 }
 419
 420 # now read PATH_INFO and use it as alternative to parameters
 421 sub evaluate_path_info {
 422         return if defined $project;
 423         my $path_info = $ENV{"PATH_INFO"};
 424         return if !$path_info;
 425         $path_info =~ s,^/+,,;
 426         return if !$path_info;
 427         # find which part of PATH_INFO is project
 428         $project = $path_info;
 429         $project =~ s,/+$,,;
 430         while ($project && !check_head_link("$projectroot/$project")) {
 431                 $project =~ s,/*[^/]*$,,;
 432         }
 433         # validate project
 434         $project = validate_pathname($project);
 435         if (!$project ||
 436             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 437             ($strict_export && !project_in_list($project))) {
 438                 undef $project;
 439                 return;
 440         }
 441         # do not change any parameters if an action is given using the query string
 442         return if $action;
 443         $path_info =~ s,^$project/*,,;
 444         my ($refname, $pathname) = split(/:/, $path_info, 2);
 445         if (defined $pathname) {
 446                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 447                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 448                 $pathname =~ s,^/+,,;
 449                 if (!$pathname || substr($pathname, -1) eq "/") {
 450                         $action  ||= "tree";
 451                         $pathname =~ s,/$,,;
 452                 } else {
 453                         $action  ||= "blob_plain";
 454                 }
 455                 $hash_base ||= validate_refname($refname);
 456                 $file_name ||= validate_pathname($pathname);
 457         } elsif (defined $refname) {
 458                 # we got "project.git/branch"
 459                 $action ||= "shortlog";
 460                 $hash   ||= validate_refname($refname);
 461         }
 462 }
 463 evaluate_path_info();
 464
 465 # path to the current git repository
 466 our $git_dir;
 467 $git_dir = "$projectroot/$project" if $project;
 468
 469 # dispatch
 470 my %actions = (
 471         "blame" => \&git_blame2,
 472         "blobdiff" => \&git_blobdiff,
 473         "blobdiff_plain" => \&git_blobdiff_plain,
 474         "blob" => \&git_blob,
 475         "blob_plain" => \&git_blob_plain,
 476         "commitdiff" => \&git_commitdiff,
 477         "commitdiff_plain" => \&git_commitdiff_plain,
 478         "commit" => \&git_commit,
 479         "forks" => \&git_forks,
 480         "heads" => \&git_heads,
 481         "history" => \&git_history,
 482         "log" => \&git_log,
 483         "rss" => \&git_rss,
 484         "atom" => \&git_atom,
 485         "search" => \&git_search,
 486         "search_help" => \&git_search_help,
 487         "shortlog" => \&git_shortlog,
 488         "summary" => \&git_summary,
 489         "tag" => \&git_tag,
 490         "tags" => \&git_tags,
 491         "tree" => \&git_tree,
 492         "snapshot" => \&git_snapshot,
 493         "object" => \&git_object,
 494         # those below don't need $project
 495         "opml" => \&git_opml,
 496         "project_list" => \&git_project_list,
 497         "project_index" => \&git_project_index,
 498 );
 499
 500 if (!defined $action) {
 501         if (defined $hash) {
 502                 $action = git_get_type($hash);
 503         } elsif (defined $hash_base && defined $file_name) {
 504                 $action = git_get_type("$hash_base:$file_name");
 505         } elsif (defined $project) {
 506                 $action = 'summary';
 507         } else {
 508                 $action = 'project_list';
 509         }
 510 }
 511 if (!defined($actions{$action})) {
 512         die_error(undef, "Unknown action");
 513 }
 514 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 515     !$project) {
 516         die_error(undef, "Project needed");
 517 }
 518 $actions{$action}->();
 519 exit;
 520
 521 ## ======================================================================
 522 ## action links
 523
 524 sub href(%) {
 525         my %params = @_;
 526         # default is to use -absolute url() i.e. $my_uri
 527         my $href = $params{-full} ? $my_url : $my_uri;
 528
 529         # XXX: Warning: If you touch this, check the search form for updating,
 530         # too.
 531
 532         my @mapping = (
 533                 project => "p",
 534                 action => "a",
 535                 file_name => "f",
 536                 file_parent => "fp",
 537                 hash => "h",
 538                 hash_parent => "hp",
 539                 hash_base => "hb",
 540                 hash_parent_base => "hpb",
 541                 page => "pg",
 542                 order => "o",
 543                 searchtext => "s",
 544                 searchtype => "st",
 545         );
 546         my %mapping = @mapping;
 547
 548         $params{'project'} = $project unless exists $params{'project'};
 549
 550         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 551         if ($use_pathinfo) {
 552                 # use PATH_INFO for project name
 553                 $href .= "/$params{'project'}" if defined $params{'project'};
 554                 delete $params{'project'};
 555
 556                 # Summary just uses the project path URL
 557                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 558                         delete $params{'action'};
 559                 }
 560         }
 561
 562         # now encode the parameters explicitly
 563         my @result = ();
 564         for (my $i = 0; $i < @mapping; $i += 2) {
 565                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 566                 if (defined $params{$name}) {
 567                         push @result, $symbol . "=" . esc_param($params{$name});
 568                 }
 569         }
 570         $href .= "?" . join(';', @result) if scalar @result;
 571
 572         return $href;
 573 }
 574
 575
 576 ## ======================================================================
 577 ## validation, quoting/unquoting and escaping
 578
 579 sub validate_pathname {
 580         my $input = shift || return undef;
 581
 582         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 583         # at the beginning, at the end, and between slashes.
 584         # also this catches doubled slashes
 585         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 586                 return undef;
 587         }
 588         # no null characters
 589         if ($input =~ m!\0!) {
 590                 return undef;
 591         }
 592         return $input;
 593 }
 594
 595 sub validate_refname {
 596         my $input = shift || return undef;
 597
 598         # textual hashes are O.K.
 599         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 600                 return $input;
 601         }
 602         # it must be correct pathname
 603         $input = validate_pathname($input)
 604                 or return undef;
 605         # restrictions on ref name according to git-check-ref-format
 606         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 607                 return undef;
 608         }
 609         return $input;
 610 }
 611
 612 # decode sequences of octets in utf8 into Perl's internal form,
 613 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 614 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 615 sub to_utf8 {
 616         my $str = shift;
 617         my $res;
 618         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 619         if (defined $res) {
 620                 return $res;
 621         } else {
 622                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 623         }
 624 }
 625
 626 # quote unsafe chars, but keep the slash, even when it's not
 627 # correct, but quoted slashes look too horrible in bookmarks
 628 sub esc_param {
 629         my $str = shift;
 630         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 631         $str =~ s/\+/%2B/g;
 632         $str =~ s/ /\+/g;
 633         return $str;
 634 }
 635
 636 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 637 sub esc_url {
 638         my $str = shift;
 639         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 640         $str =~ s/\+/%2B/g;
 641         $str =~ s/ /\+/g;
 642         return $str;
 643 }
 644
 645 # replace invalid utf8 character with SUBSTITUTION sequence
 646 sub esc_html ($;%) {
 647         my $str = shift;
 648         my %opts = @_;
 649
 650         $str = to_utf8($str);
 651         $str = $cgi->escapeHTML($str);
 652         if ($opts{'-nbsp'}) {
 653                 $str =~ s/ /&nbsp;/g;
 654         }
 655         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 656         return $str;
 657 }
 658
 659 # quote control characters and escape filename to HTML
 660 sub esc_path {
 661         my $str = shift;
 662         my %opts = @_;
 663
 664         $str = to_utf8($str);
 665         $str = $cgi->escapeHTML($str);
 666         if ($opts{'-nbsp'}) {
 667                 $str =~ s/ /&nbsp;/g;
 668         }
 669         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 670         return $str;
 671 }
 672
 673 # Make control characters "printable", using character escape codes (CEC)
 674 sub quot_cec {
 675         my $cntrl = shift;
 676         my %es = ( # character escape codes, aka escape sequences
 677                    "\t" => '\t',   # tab            (HT)
 678                    "\n" => '\n',   # line feed      (LF)
 679                    "\r" => '\r',   # carrige return (CR)
 680                    "\f" => '\f',   # form feed      (FF)
 681                    "\b" => '\b',   # backspace      (BS)
 682                    "\a" => '\a',   # alarm (bell)   (BEL)
 683                    "\e" => '\e',   # escape         (ESC)
 684                    "\013" => '\v', # vertical tab   (VT)
 685                    "\000" => '\0', # nul character  (NUL)
 686                    );
 687         my $chr = ( (exists $es{$cntrl})
 688                     ? $es{$cntrl}
 689                     : sprintf('\%03o', ord($cntrl)) );
 690         return "<span class=\"cntrl\">$chr</span>";
 691 }
 692
 693 # Alternatively use unicode control pictures codepoints,
 694 # Unicode "printable representation" (PR)
 695 sub quot_upr {
 696         my $cntrl = shift;
 697         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 698         return "<span class=\"cntrl\">$chr</span>";
 699 }
 700
 701 # git may return quoted and escaped filenames
 702 sub unquote {
 703         my $str = shift;
 704
 705         sub unq {
 706                 my $seq = shift;
 707                 my %es = ( # character escape codes, aka escape sequences
 708                         't' => "\t",   # tab            (HT, TAB)
 709                         'n' => "\n",   # newline        (NL)
 710                         'r' => "\r",   # return         (CR)
 711                         'f' => "\f",   # form feed      (FF)
 712                         'b' => "\b",   # backspace      (BS)
 713                         'a' => "\a",   # alarm (bell)   (BEL)
 714                         'e' => "\e",   # escape         (ESC)
 715                         'v' => "\013", # vertical tab   (VT)
 716                 );
 717
 718                 if ($seq =~ m/^[0-7]{1,3}$/) {
 719                         # octal char sequence
 720                         return chr(oct($seq));
 721                 } elsif (exists $es{$seq}) {
 722                         # C escape sequence, aka character escape code
 723                         return $es{$seq}
 724                 }
 725                 # quoted ordinary character
 726                 return $seq;
 727         }
 728
 729         if ($str =~ m/^"(.*)"$/) {
 730                 # needs unquoting
 731                 $str = $1;
 732                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 733         }
 734         return $str;
 735 }
 736
 737 # escape tabs (convert tabs to spaces)
 738 sub untabify {
 739         my $line = shift;
 740
 741         while ((my $pos = index($line, "\t")) != -1) {
 742                 if (my $count = (8 - ($pos % 8))) {
 743                         my $spaces = ' ' x $count;
 744                         $line =~ s/\t/$spaces/;
 745                 }
 746         }
 747
 748         return $line;
 749 }
 750
 751 sub project_in_list {
 752         my $project = shift;
 753         my @list = git_get_projects_list();
 754         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 755 }
 756
 757 ## ----------------------------------------------------------------------
 758 ## HTML aware string manipulation
 759
 760 sub chop_str {
 761         my $str = shift;
 762         my $len = shift;
 763         my $add_len = shift || 10;
 764
 765         # allow only $len chars, but don't cut a word if it would fit in $add_len
 766         # if it doesn't fit, cut it if it's still longer than the dots we would add
 767         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 768         my $body = $1;
 769         my $tail = $2;
 770         if (length($tail) > 4) {
 771                 $tail = " ...";
 772                 $body =~ s/&[^;]*$//; # remove chopped character entities
 773         }
 774         return "$body$tail";
 775 }
 776
 777 ## ----------------------------------------------------------------------
 778 ## functions returning short strings
 779
 780 # CSS class for given age value (in seconds)
 781 sub age_class {
 782         my $age = shift;
 783
 784         if (!defined $age) {
 785                 return "noage";
 786         } elsif ($age < 60*60*2) {
 787                 return "age0";
 788         } elsif ($age < 60*60*24*2) {
 789                 return "age1";
 790         } else {
 791                 return "age2";
 792         }
 793 }
 794
 795 # convert age in seconds to "nn units ago" string
 796 sub age_string {
 797         my $age = shift;
 798         my $age_str;
 799
 800         if ($age > 60*60*24*365*2) {
 801                 $age_str = (int $age/60/60/24/365);
 802                 $age_str .= " years ago";
 803         } elsif ($age > 60*60*24*(365/12)*2) {
 804                 $age_str = int $age/60/60/24/(365/12);
 805                 $age_str .= " months ago";
 806         } elsif ($age > 60*60*24*7*2) {
 807                 $age_str = int $age/60/60/24/7;
 808                 $age_str .= " weeks ago";
 809         } elsif ($age > 60*60*24*2) {
 810                 $age_str = int $age/60/60/24;
 811                 $age_str .= " days ago";
 812         } elsif ($age > 60*60*2) {
 813                 $age_str = int $age/60/60;
 814                 $age_str .= " hours ago";
 815         } elsif ($age > 60*2) {
 816                 $age_str = int $age/60;
 817                 $age_str .= " min ago";
 818         } elsif ($age > 2) {
 819                 $age_str = int $age;
 820                 $age_str .= " sec ago";
 821         } else {
 822                 $age_str .= " right now";
 823         }
 824         return $age_str;
 825 }
 826
 827 # convert file mode in octal to symbolic file mode string
 828 sub mode_str {
 829         my $mode = oct shift;
 830
 831         if (S_ISDIR($mode & S_IFMT)) {
 832                 return 'drwxr-xr-x';
 833         } elsif (S_ISLNK($mode)) {
 834                 return 'lrwxrwxrwx';
 835         } elsif (S_ISREG($mode)) {
 836                 # git cares only about the executable bit
 837                 if ($mode & S_IXUSR) {
 838                         return '-rwxr-xr-x';
 839                 } else {
 840                         return '-rw-r--r--';
 841                 };
 842         } else {
 843                 return '----------';
 844         }
 845 }
 846
 847 # convert file mode in octal to file type string
 848 sub file_type {
 849         my $mode = shift;
 850
 851         if ($mode !~ m/^[0-7]+$/) {
 852                 return $mode;
 853         } else {
 854                 $mode = oct $mode;
 855         }
 856
 857         if (S_ISDIR($mode & S_IFMT)) {
 858                 return "directory";
 859         } elsif (S_ISLNK($mode)) {
 860                 return "symlink";
 861         } elsif (S_ISREG($mode)) {
 862                 return "file";
 863         } else {
 864                 return "unknown";
 865         }
 866 }
 867
 868 # convert file mode in octal to file type description string
 869 sub file_type_long {
 870         my $mode = shift;
 871
 872         if ($mode !~ m/^[0-7]+$/) {
 873                 return $mode;
 874         } else {
 875                 $mode = oct $mode;
 876         }
 877
 878         if (S_ISDIR($mode & S_IFMT)) {
 879                 return "directory";
 880         } elsif (S_ISLNK($mode)) {
 881                 return "symlink";
 882         } elsif (S_ISREG($mode)) {
 883                 if ($mode & S_IXUSR) {
 884                         return "executable";
 885                 } else {
 886                         return "file";
 887                 };
 888         } else {
 889                 return "unknown";
 890         }
 891 }
 892
 893
 894 ## ----------------------------------------------------------------------
 895 ## functions returning short HTML fragments, or transforming HTML fragments
 896 ## which don't belong to other sections
 897
 898 # format line of commit message.
 899 sub format_log_line_html {
 900         my $line = shift;
 901
 902         $line = esc_html($line, -nbsp=>1);
 903         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 904                 my $hash_text = $1;
 905                 my $link =
 906                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 907                                 -class => "text"}, $hash_text);
 908                 $line =~ s/$hash_text/$link/;
 909         }
 910         return $line;
 911 }
 912
 913 # format marker of refs pointing to given object
 914 sub format_ref_marker {
 915         my ($refs, $id) = @_;
 916         my $markers = '';
 917
 918         if (defined $refs->{$id}) {
 919                 foreach my $ref (@{$refs->{$id}}) {
 920                         my ($type, $name) = qw();
 921                         # e.g. tags/v2.6.11 or heads/next
 922                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 923                                 $type = $1;
 924                                 $name = $2;
 925                         } else {
 926                                 $type = "ref";
 927                                 $name = $ref;
 928                         }
 929
 930                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 931                                     esc_html($name) . "</span>";
 932                 }
 933         }
 934
 935         if ($markers) {
 936                 return ' <span class="refs">'. $markers . '</span>';
 937         } else {
 938                 return "";
 939         }
 940 }
 941
 942 # format, perhaps shortened and with markers, title line
 943 sub format_subject_html {
 944         my ($long, $short, $href, $extra) = @_;
 945         $extra = '' unless defined($extra);
 946
 947         if (length($short) < length($long)) {
 948                 return $cgi->a({-href => $href, -class => "list subject",
 949                                 -title => to_utf8($long)},
 950                        esc_html($short) . $extra);
 951         } else {
 952                 return $cgi->a({-href => $href, -class => "list subject"},
 953                        esc_html($long)  . $extra);
 954         }
 955 }
 956
 957 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
 958 sub format_git_diff_header_line {
 959         my $line = shift;
 960         my $diffinfo = shift;
 961         my ($from, $to) = @_;
 962
 963         if ($diffinfo->{'nparents'}) {
 964                 # combined diff
 965                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
 966                 if ($to->{'href'}) {
 967                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 968                                          esc_path($to->{'file'}));
 969                 } else { # file was deleted (no href)
 970                         $line .= esc_path($to->{'file'});
 971                 }
 972         } else {
 973                 # "ordinary" diff
 974                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 975                 if ($from->{'href'}) {
 976                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 977                                          'a/' . esc_path($from->{'file'}));
 978                 } else { # file was added (no href)
 979                         $line .= 'a/' . esc_path($from->{'file'});
 980                 }
 981                 $line .= ' ';
 982                 if ($to->{'href'}) {
 983                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 984                                          'b/' . esc_path($to->{'file'}));
 985                 } else { # file was deleted
 986                         $line .= 'b/' . esc_path($to->{'file'});
 987                 }
 988         }
 989
 990         return "<div class=\"diff header\">$line</div>\n";
 991 }
 992
 993 # format extended diff header line, before patch itself
 994 sub format_extended_diff_header_line {
 995         my $line = shift;
 996         my $diffinfo = shift;
 997         my ($from, $to) = @_;
 998
 999         # match <path>
1000         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1001                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1002                                        esc_path($from->{'file'}));
1003         }
1004         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1005                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1006                                  esc_path($to->{'file'}));
1007         }
1008         # match single <mode>
1009         if ($line =~ m/\s(\d{6})$/) {
1010                 $line .= '<span class="info"> (' .
1011                          file_type_long($1) .
1012                          ')</span>';
1013         }
1014         # match <hash>
1015         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1016                 # can match only for combined diff
1017                 $line = 'index ';
1018                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1019                         if ($from->{'href'}[$i]) {
1020                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1021                                                   -class=>"hash"},
1022                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1023                         } else {
1024                                 $line .= '0' x 7;
1025                         }
1026                         # separator
1027                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1028                 }
1029                 $line .= '..';
1030                 if ($to->{'href'}) {
1031                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1032                                          substr($diffinfo->{'to_id'},0,7));
1033                 } else {
1034                         $line .= '0' x 7;
1035                 }
1036
1037         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1038                 # can match only for ordinary diff
1039                 my ($from_link, $to_link);
1040                 if ($from->{'href'}) {
1041                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1042                                              substr($diffinfo->{'from_id'},0,7));
1043                 } else {
1044                         $from_link = '0' x 7;
1045                 }
1046                 if ($to->{'href'}) {
1047                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1048                                            substr($diffinfo->{'to_id'},0,7));
1049                 } else {
1050                         $to_link = '0' x 7;
1051                 }
1052                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1053                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1054         }
1055
1056         return $line . "<br/>\n";
1057 }
1058
1059 # format from-file/to-file diff header
1060 sub format_diff_from_to_header {
1061         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1062         my $line;
1063         my $result = '';
1064
1065         $line = $from_line;
1066         #assert($line =~ m/^---/) if DEBUG;
1067         # no extra formatting for "^--- /dev/null"
1068         if (! $diffinfo->{'nparents'}) {
1069                 # ordinary (single parent) diff
1070                 if ($line =~ m!^--- "?a/!) {
1071                         if ($from->{'href'}) {
1072                                 $line = '--- a/' .
1073                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1074                                                 esc_path($from->{'file'}));
1075                         } else {
1076                                 $line = '--- a/' .
1077                                         esc_path($from->{'file'});
1078                         }
1079                 }
1080                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1081
1082         } else {
1083                 # combined diff (merge commit)
1084                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1085                         if ($from->{'href'}[$i]) {
1086                                 $line = '--- ' .
1087                                         $cgi->a({-href=>href(action=>"blobdiff",
1088                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1089                                                              hash_parent_base=>$parents[$i],
1090                                                              file_parent=>$from->{'file'}[$i],
1091                                                              hash=>$diffinfo->{'to_id'},
1092                                                              hash_base=>$hash,
1093                                                              file_name=>$to->{'file'}),
1094                                                  -class=>"path",
1095                                                  -title=>"diff" . ($i+1)},
1096                                                 $i+1) .
1097                                         '/' .
1098                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1099                                                 esc_path($from->{'file'}[$i]));
1100                         } else {
1101                                 $line = '--- /dev/null';
1102                         }
1103                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1104                 }
1105         }
1106
1107         $line = $to_line;
1108         #assert($line =~ m/^\+\+\+/) if DEBUG;
1109         # no extra formatting for "^+++ /dev/null"
1110         if ($line =~ m!^\+\+\+ "?b/!) {
1111                 if ($to->{'href'}) {
1112                         $line = '+++ b/' .
1113                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1114                                         esc_path($to->{'file'}));
1115                 } else {
1116                         $line = '+++ b/' .
1117                                 esc_path($to->{'file'});
1118                 }
1119         }
1120         $result .= qq!<div class="diff to_file">$line</div>\n!;
1121
1122         return $result;
1123 }
1124
1125 # create note for patch simplified by combined diff
1126 sub format_diff_cc_simplified {
1127         my ($diffinfo, @parents) = @_;
1128         my $result = '';
1129
1130         $result .= "<div class=\"diff header\">" .
1131                    "diff --cc ";
1132         if (!is_deleted($diffinfo)) {
1133                 $result .= $cgi->a({-href => href(action=>"blob",
1134                                                   hash_base=>$hash,
1135                                                   hash=>$diffinfo->{'to_id'},
1136                                                   file_name=>$diffinfo->{'to_file'}),
1137                                     -class => "path"},
1138                                    esc_path($diffinfo->{'to_file'}));
1139         } else {
1140                 $result .= esc_path($diffinfo->{'to_file'});
1141         }
1142         $result .= "</div>\n" . # class="diff header"
1143                    "<div class=\"diff nodifferences\">" .
1144                    "Simple merge" .
1145                    "</div>\n"; # class="diff nodifferences"
1146
1147         return $result;
1148 }
1149
1150 # format patch (diff) line (not to be used for diff headers)
1151 sub format_diff_line {
1152         my $line = shift;
1153         my ($from, $to) = @_;
1154         my $diff_class = "";
1155
1156         chomp $line;
1157
1158         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1159                 # combined diff
1160                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1161                 if ($line =~ m/^\@{3}/) {
1162                         $diff_class = " chunk_header";
1163                 } elsif ($line =~ m/^\\/) {
1164                         $diff_class = " incomplete";
1165                 } elsif ($prefix =~ tr/+/+/) {
1166                         $diff_class = " add";
1167                 } elsif ($prefix =~ tr/-/-/) {
1168                         $diff_class = " rem";
1169                 }
1170         } else {
1171                 # assume ordinary diff
1172                 my $char = substr($line, 0, 1);
1173                 if ($char eq '+') {
1174                         $diff_class = " add";
1175                 } elsif ($char eq '-') {
1176                         $diff_class = " rem";
1177                 } elsif ($char eq '@') {
1178                         $diff_class = " chunk_header";
1179                 } elsif ($char eq "\\") {
1180                         $diff_class = " incomplete";
1181                 }
1182         }
1183         $line = untabify($line);
1184         if ($from && $to && $line =~ m/^\@{2} /) {
1185                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1186                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1187
1188                 $from_lines = 0 unless defined $from_lines;
1189                 $to_lines   = 0 unless defined $to_lines;
1190
1191                 if ($from->{'href'}) {
1192                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1193                                              -class=>"list"}, $from_text);
1194                 }
1195                 if ($to->{'href'}) {
1196                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1197                                              -class=>"list"}, $to_text);
1198                 }
1199                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1200                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1201                 return "<div class=\"diff$diff_class\">$line</div>\n";
1202         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1203                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1204                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1205
1206                 @from_text = split(' ', $ranges);
1207                 for (my $i = 0; $i < @from_text; ++$i) {
1208                         ($from_start[$i], $from_nlines[$i]) =
1209                                 (split(',', substr($from_text[$i], 1)), 0);
1210                 }
1211
1212                 $to_text   = pop @from_text;
1213                 $to_start  = pop @from_start;
1214                 $to_nlines = pop @from_nlines;
1215
1216                 $line = "<span class=\"chunk_info\">$prefix ";
1217                 for (my $i = 0; $i < @from_text; ++$i) {
1218                         if ($from->{'href'}[$i]) {
1219                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1220                                                   -class=>"list"}, $from_text[$i]);
1221                         } else {
1222                                 $line .= $from_text[$i];
1223                         }
1224                         $line .= " ";
1225                 }
1226                 if ($to->{'href'}) {
1227                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1228                                           -class=>"list"}, $to_text);
1229                 } else {
1230                         $line .= $to_text;
1231                 }
1232                 $line .= " $prefix</span>" .
1233                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1234                 return "<div class=\"diff$diff_class\">$line</div>\n";
1235         }
1236         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1237 }
1238
1239 ## ----------------------------------------------------------------------
1240 ## git utility subroutines, invoking git commands
1241
1242 # returns path to the core git executable and the --git-dir parameter as list
1243 sub git_cmd {
1244         return $GIT, '--git-dir='.$git_dir;
1245 }
1246
1247 # returns path to the core git executable and the --git-dir parameter as string
1248 sub git_cmd_str {
1249         return join(' ', git_cmd());
1250 }
1251
1252 # get HEAD ref of given project as hash
1253 sub git_get_head_hash {
1254         my $project = shift;
1255         my $o_git_dir = $git_dir;
1256         my $retval = undef;
1257         $git_dir = "$projectroot/$project";
1258         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1259                 my $head = <$fd>;
1260                 close $fd;
1261                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1262                         $retval = $1;
1263                 }
1264         }
1265         if (defined $o_git_dir) {
1266                 $git_dir = $o_git_dir;
1267         }
1268         return $retval;
1269 }
1270
1271 # get type of given object
1272 sub git_get_type {
1273         my $hash = shift;
1274
1275         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1276         my $type = <$fd>;
1277         close $fd or return;
1278         chomp $type;
1279         return $type;
1280 }
1281
1282 sub git_get_project_config {
1283         my ($key, $type) = @_;
1284
1285         return unless ($key);
1286         $key =~ s/^gitweb\.//;
1287         return if ($key =~ m/\W/);
1288
1289         my @x = (git_cmd(), 'config');
1290         if (defined $type) { push @x, $type; }
1291         push @x, "--get";
1292         push @x, "gitweb.$key";
1293         my $val = qx(@x);
1294         chomp $val;
1295         return ($val);
1296 }
1297
1298 # get hash of given path at given ref
1299 sub git_get_hash_by_path {
1300         my $base = shift;
1301         my $path = shift || return undef;
1302         my $type = shift;
1303
1304         $path =~ s,/+$,,;
1305
1306         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1307                 or die_error(undef, "Open git-ls-tree failed");
1308         my $line = <$fd>;
1309         close $fd or return undef;
1310
1311         if (!defined $line) {
1312                 # there is no tree or hash given by $path at $base
1313                 return undef;
1314         }
1315
1316         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1317         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1318         if (defined $type && $type ne $2) {
1319                 # type doesn't match
1320                 return undef;
1321         }
1322         return $3;
1323 }
1324
1325 # get path of entry with given hash at given tree-ish (ref)
1326 # used to get 'from' filename for combined diff (merge commit) for renames
1327 sub git_get_path_by_hash {
1328         my $base = shift || return;
1329         my $hash = shift || return;
1330
1331         local $/ = "\0";
1332
1333         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1334                 or return undef;
1335         while (my $line = <$fd>) {
1336                 chomp $line;
1337
1338                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1339                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1340                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1341                         close $fd;
1342                         return $1;
1343                 }
1344         }
1345         close $fd;
1346         return undef;
1347 }
1348
1349 ## ......................................................................
1350 ## git utility functions, directly accessing git repository
1351
1352 sub git_get_project_description {
1353         my $path = shift;
1354
1355         open my $fd, "$projectroot/$path/description" or return undef;
1356         my $descr = <$fd>;
1357         close $fd;
1358         if (defined $descr) {
1359                 chomp $descr;
1360         }
1361         return $descr;
1362 }
1363
1364 sub git_get_project_url_list {
1365         my $path = shift;
1366
1367         open my $fd, "$projectroot/$path/cloneurl" or return;
1368         my @git_project_url_list = map { chomp; $_ } <$fd>;
1369         close $fd;
1370
1371         return wantarray ? @git_project_url_list : \@git_project_url_list;
1372 }
1373
1374 sub git_get_projects_list {
1375         my ($filter) = @_;
1376         my @list;
1377
1378         $filter ||= '';
1379         $filter =~ s/\.git$//;
1380
1381         my ($check_forks) = gitweb_check_feature('forks');
1382
1383         if (-d $projects_list) {
1384                 # search in directory
1385                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1386                 # remove the trailing "/"
1387                 $dir =~ s!/+$!!;
1388                 my $pfxlen = length("$dir");
1389
1390                 File::Find::find({
1391                         follow_fast => 1, # follow symbolic links
1392                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1393                         wanted => sub {
1394                                 # skip project-list toplevel, if we get it.
1395                                 return if (m!^[/.]$!);
1396                                 # only directories can be git repositories
1397                                 return unless (-d $_);
1398
1399                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1400                                 # we check related file in $projectroot
1401                                 if ($check_forks and $subdir =~ m#/.#) {
1402                                         $File::Find::prune = 1;
1403                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1404                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1405                                         $File::Find::prune = 1;
1406                                 }
1407                         },
1408                 }, "$dir");
1409
1410         } elsif (-f $projects_list) {
1411                 # read from file(url-encoded):
1412                 # 'git%2Fgit.git Linus+Torvalds'
1413                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1414                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1415                 my %paths;
1416                 open my ($fd), $projects_list or return;
1417         PROJECT:
1418                 while (my $line = <$fd>) {
1419                         chomp $line;
1420                         my ($path, $owner) = split ' ', $line;
1421                         $path = unescape($path);
1422                         $owner = unescape($owner);
1423                         if (!defined $path) {
1424                                 next;
1425                         }
1426                         if ($filter ne '') {
1427                                 # looking for forks;
1428                                 my $pfx = substr($path, 0, length($filter));
1429                                 if ($pfx ne $filter) {
1430                                         next PROJECT;
1431                                 }
1432                                 my $sfx = substr($path, length($filter));
1433                                 if ($sfx !~ /^\/.*\.git$/) {
1434                                         next PROJECT;
1435                                 }
1436                         } elsif ($check_forks) {
1437                         PATH:
1438                                 foreach my $filter (keys %paths) {
1439                                         # looking for forks;
1440                                         my $pfx = substr($path, 0, length($filter));
1441                                         if ($pfx ne $filter) {
1442                                                 next PATH;
1443                                         }
1444                                         my $sfx = substr($path, length($filter));
1445                                         if ($sfx !~ /^\/.*\.git$/) {
1446                                                 next PATH;
1447                                         }
1448                                         # is a fork, don't include it in
1449                                         # the list
1450                                         next PROJECT;
1451                                 }
1452                         }
1453                         if (check_export_ok("$projectroot/$path")) {
1454                                 my $pr = {
1455                                         path => $path,
1456                                         owner => to_utf8($owner),
1457                                 };
1458                                 push @list, $pr;
1459                                 (my $forks_path = $path) =~ s/\.git$//;
1460                                 $paths{$forks_path}++;
1461                         }
1462                 }
1463                 close $fd;
1464         }
1465         return @list;
1466 }
1467
1468 our $gitweb_project_owner = undef;
1469 sub git_get_project_list_from_file {
1470
1471         return if (defined $gitweb_project_owner);
1472
1473         $gitweb_project_owner = {};
1474         # read from file (url-encoded):
1475         # 'git%2Fgit.git Linus+Torvalds'
1476         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1477         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1478         if (-f $projects_list) {
1479                 open (my $fd , $projects_list);
1480                 while (my $line = <$fd>) {
1481                         chomp $line;
1482                         my ($pr, $ow) = split ' ', $line;
1483                         $pr = unescape($pr);
1484                         $ow = unescape($ow);
1485                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1486                 }
1487                 close $fd;
1488         }
1489 }
1490
1491 sub git_get_project_owner {
1492         my $project = shift;
1493         my $owner;
1494
1495         return undef unless $project;
1496
1497         if (!defined $gitweb_project_owner) {
1498                 git_get_project_list_from_file();
1499         }
1500
1501         if (exists $gitweb_project_owner->{$project}) {
1502                 $owner = $gitweb_project_owner->{$project};
1503         }
1504         if (!defined $owner) {
1505                 $owner = get_file_owner("$projectroot/$project");
1506         }
1507
1508         return $owner;
1509 }
1510
1511 sub git_get_last_activity {
1512         my ($path) = @_;
1513         my $fd;
1514
1515         $git_dir = "$projectroot/$path";
1516         open($fd, "-|", git_cmd(), 'for-each-ref',
1517              '--format=%(committer)',
1518              '--sort=-committerdate',
1519              '--count=1',
1520              'refs/heads') or return;
1521         my $most_recent = <$fd>;
1522         close $fd or return;
1523         if (defined $most_recent &&
1524             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1525                 my $timestamp = $1;
1526                 my $age = time - $timestamp;
1527                 return ($age, age_string($age));
1528         }
1529         return (undef, undef);
1530 }
1531
1532 sub git_get_references {
1533         my $type = shift || "";
1534         my %refs;
1535         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1536         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1537         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1538                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1539                 or return;
1540
1541         while (my $line = <$fd>) {
1542                 chomp $line;
1543                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1544                         if (defined $refs{$1}) {
1545                                 push @{$refs{$1}}, $2;
1546                         } else {
1547                                 $refs{$1} = [ $2 ];
1548                         }
1549                 }
1550         }
1551         close $fd or return;
1552         return \%refs;
1553 }
1554
1555 sub git_get_rev_name_tags {
1556         my $hash = shift || return undef;
1557
1558         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1559                 or return;
1560         my $name_rev = <$fd>;
1561         close $fd;
1562
1563         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1564                 return $1;
1565         } else {
1566                 # catches also '$hash undefined' output
1567                 return undef;
1568         }
1569 }
1570
1571 ## ----------------------------------------------------------------------
1572 ## parse to hash functions
1573
1574 sub parse_date {
1575         my $epoch = shift;
1576         my $tz = shift || "-0000";
1577
1578         my %date;
1579         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1580         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1581         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1582         $date{'hour'} = $hour;
1583         $date{'minute'} = $min;
1584         $date{'mday'} = $mday;
1585         $date{'day'} = $days[$wday];
1586         $date{'month'} = $months[$mon];
1587         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1588                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1589         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1590                              $mday, $months[$mon], $hour ,$min;
1591         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1592                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1593
1594         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1595         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1596         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1597         $date{'hour_local'} = $hour;
1598         $date{'minute_local'} = $min;
1599         $date{'tz_local'} = $tz;
1600         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1601                                   1900+$year, $mon+1, $mday,
1602                                   $hour, $min, $sec, $tz);
1603         return %date;
1604 }
1605
1606 sub parse_tag {
1607         my $tag_id = shift;
1608         my %tag;
1609         my @comment;
1610
1611         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1612         $tag{'id'} = $tag_id;
1613         while (my $line = <$fd>) {
1614                 chomp $line;
1615                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1616                         $tag{'object'} = $1;
1617                 } elsif ($line =~ m/^type (.+)$/) {
1618                         $tag{'type'} = $1;
1619                 } elsif ($line =~ m/^tag (.+)$/) {
1620                         $tag{'name'} = $1;
1621                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1622                         $tag{'author'} = $1;
1623                         $tag{'epoch'} = $2;
1624                         $tag{'tz'} = $3;
1625                 } elsif ($line =~ m/--BEGIN/) {
1626                         push @comment, $line;
1627                         last;
1628                 } elsif ($line eq "") {
1629                         last;
1630                 }
1631         }
1632         push @comment, <$fd>;
1633         $tag{'comment'} = \@comment;
1634         close $fd or return;
1635         if (!defined $tag{'name'}) {
1636                 return
1637         };
1638         return %tag
1639 }
1640
1641 sub parse_commit_text {
1642         my ($commit_text, $withparents) = @_;
1643         my @commit_lines = split '\n', $commit_text;
1644         my %co;
1645
1646         pop @commit_lines; # Remove '\0'
1647
1648         if (! @commit_lines) {
1649                 return;
1650         }
1651
1652         my $header = shift @commit_lines;
1653         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1654                 return;
1655         }
1656         ($co{'id'}, my @parents) = split ' ', $header;
1657         while (my $line = shift @commit_lines) {
1658                 last if $line eq "\n";
1659                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1660                         $co{'tree'} = $1;
1661                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1662                         push @parents, $1;
1663                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1664                         $co{'author'} = $1;
1665                         $co{'author_epoch'} = $2;
1666                         $co{'author_tz'} = $3;
1667                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1668                                 $co{'author_name'}  = $1;
1669                                 $co{'author_email'} = $2;
1670                         } else {
1671                                 $co{'author_name'} = $co{'author'};
1672                         }
1673                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1674                         $co{'committer'} = $1;
1675                         $co{'committer_epoch'} = $2;
1676                         $co{'committer_tz'} = $3;
1677                         $co{'committer_name'} = $co{'committer'};
1678                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1679                                 $co{'committer_name'}  = $1;
1680                                 $co{'committer_email'} = $2;
1681                         } else {
1682                                 $co{'committer_name'} = $co{'committer'};
1683                         }
1684                 }
1685         }
1686         if (!defined $co{'tree'}) {
1687                 return;
1688         };
1689         $co{'parents'} = \@parents;
1690         $co{'parent'} = $parents[0];
1691
1692         foreach my $title (@commit_lines) {
1693                 $title =~ s/^    //;
1694                 if ($title ne "") {
1695                         $co{'title'} = chop_str($title, 80, 5);
1696                         # remove leading stuff of merges to make the interesting part visible
1697                         if (length($title) > 50) {
1698                                 $title =~ s/^Automatic //;
1699                                 $title =~ s/^merge (of|with) /Merge ... /i;
1700                                 if (length($title) > 50) {
1701                                         $title =~ s/(http|rsync):\/\///;
1702                                 }
1703                                 if (length($title) > 50) {
1704                                         $title =~ s/(master|www|rsync)\.//;
1705                                 }
1706                                 if (length($title) > 50) {
1707                                         $title =~ s/kernel.org:?//;
1708                                 }
1709                                 if (length($title) > 50) {
1710                                         $title =~ s/\/pub\/scm//;
1711                                 }
1712                         }
1713                         $co{'title_short'} = chop_str($title, 50, 5);
1714                         last;
1715                 }
1716         }
1717         if ($co{'title'} eq "") {
1718                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1719         }
1720         # remove added spaces
1721         foreach my $line (@commit_lines) {
1722                 $line =~ s/^    //;
1723         }
1724         $co{'comment'} = \@commit_lines;
1725
1726         my $age = time - $co{'committer_epoch'};
1727         $co{'age'} = $age;
1728         $co{'age_string'} = age_string($age);
1729         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1730         if ($age > 60*60*24*7*2) {
1731                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1732                 $co{'age_string_age'} = $co{'age_string'};
1733         } else {
1734                 $co{'age_string_date'} = $co{'age_string'};
1735                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1736         }
1737         return %co;
1738 }
1739
1740 sub parse_commit {
1741         my ($commit_id) = @_;
1742         my %co;
1743
1744         local $/ = "\0";
1745
1746         open my $fd, "-|", git_cmd(), "rev-list",
1747                 "--parents",
1748                 "--header",
1749                 "--max-count=1",
1750                 $commit_id,
1751                 "--",
1752                 or die_error(undef, "Open git-rev-list failed");
1753         %co = parse_commit_text(<$fd>, 1);
1754         close $fd;
1755
1756         return %co;
1757 }
1758
1759 sub parse_commits {
1760         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1761         my @cos;
1762
1763         $maxcount ||= 1;
1764         $skip ||= 0;
1765
1766         local $/ = "\0";
1767
1768         open my $fd, "-|", git_cmd(), "rev-list",
1769                 "--header",
1770                 ($arg ? ($arg) : ()),
1771                 ("--max-count=" . $maxcount),
1772                 ("--skip=" . $skip),
1773                 $commit_id,
1774                 "--",
1775                 ($filename ? ($filename) : ())
1776                 or die_error(undef, "Open git-rev-list failed");
1777         while (my $line = <$fd>) {
1778                 my %co = parse_commit_text($line);
1779                 push @cos, \%co;
1780         }
1781         close $fd;
1782
1783         return wantarray ? @cos : \@cos;
1784 }
1785
1786 # parse ref from ref_file, given by ref_id, with given type
1787 sub parse_ref {
1788         my $ref_file = shift;
1789         my $ref_id = shift;
1790         my $type = shift || git_get_type($ref_id);
1791         my %ref_item;
1792
1793         $ref_item{'type'} = $type;
1794         $ref_item{'id'} = $ref_id;
1795         $ref_item{'epoch'} = 0;
1796         $ref_item{'age'} = "unknown";
1797         if ($type eq "tag") {
1798                 my %tag = parse_tag($ref_id);
1799                 $ref_item{'comment'} = $tag{'comment'};
1800                 if ($tag{'type'} eq "commit") {
1801                         my %co = parse_commit($tag{'object'});
1802                         $ref_item{'epoch'} = $co{'committer_epoch'};
1803                         $ref_item{'age'} = $co{'age_string'};
1804                 } elsif (defined($tag{'epoch'})) {
1805                         my $age = time - $tag{'epoch'};
1806                         $ref_item{'epoch'} = $tag{'epoch'};
1807                         $ref_item{'age'} = age_string($age);
1808                 }
1809                 $ref_item{'reftype'} = $tag{'type'};
1810                 $ref_item{'name'} = $tag{'name'};
1811                 $ref_item{'refid'} = $tag{'object'};
1812         } elsif ($type eq "commit"){
1813                 my %co = parse_commit($ref_id);
1814                 $ref_item{'reftype'} = "commit";
1815                 $ref_item{'name'} = $ref_file;
1816                 $ref_item{'title'} = $co{'title'};
1817                 $ref_item{'refid'} = $ref_id;
1818                 $ref_item{'epoch'} = $co{'committer_epoch'};
1819                 $ref_item{'age'} = $co{'age_string'};
1820         } else {
1821                 $ref_item{'reftype'} = $type;
1822                 $ref_item{'name'} = $ref_file;
1823                 $ref_item{'refid'} = $ref_id;
1824         }
1825
1826         return %ref_item;
1827 }
1828
1829 # parse line of git-diff-tree "raw" output
1830 sub parse_difftree_raw_line {
1831         my $line = shift;
1832         my %res;
1833
1834         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1835         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1836         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1837                 $res{'from_mode'} = $1;
1838                 $res{'to_mode'} = $2;
1839                 $res{'from_id'} = $3;
1840                 $res{'to_id'} = $4;
1841                 $res{'status'} = $5;
1842                 $res{'similarity'} = $6;
1843                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1844                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1845                 } else {
1846                         $res{'file'} = unquote($7);
1847                 }
1848         }
1849         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1850         # combined diff (for merge commit)
1851         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1852                 $res{'nparents'}  = length($1);
1853                 $res{'from_mode'} = [ split(' ', $2) ];
1854                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1855                 $res{'from_id'} = [ split(' ', $3) ];
1856                 $res{'to_id'} = pop @{$res{'from_id'}};
1857                 $res{'status'} = [ split('', $4) ];
1858                 $res{'to_file'} = unquote($5);
1859         }
1860         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1861         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1862                 $res{'commit'} = $1;
1863         }
1864
1865         return wantarray ? %res : \%res;
1866 }
1867
1868 # parse line of git-ls-tree output
1869 sub parse_ls_tree_line ($;%) {
1870         my $line = shift;
1871         my %opts = @_;
1872         my %res;
1873
1874         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1875         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1876
1877         $res{'mode'} = $1;
1878         $res{'type'} = $2;
1879         $res{'hash'} = $3;
1880         if ($opts{'-z'}) {
1881                 $res{'name'} = $4;
1882         } else {
1883                 $res{'name'} = unquote($4);
1884         }
1885
1886         return wantarray ? %res : \%res;
1887 }
1888
1889 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1890 sub parse_from_to_diffinfo {
1891         my ($diffinfo, $from, $to, @parents) = @_;
1892
1893         if ($diffinfo->{'nparents'}) {
1894                 # combined diff
1895                 $from->{'file'} = [];
1896                 $from->{'href'} = [];
1897                 fill_from_file_info($diffinfo, @parents)
1898                         unless exists $diffinfo->{'from_file'};
1899                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1900                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1901                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1902                                 $from->{'href'}[$i] = href(action=>"blob",
1903                                                            hash_base=>$parents[$i],
1904                                                            hash=>$diffinfo->{'from_id'}[$i],
1905                                                            file_name=>$from->{'file'}[$i]);
1906                         } else {
1907                                 $from->{'href'}[$i] = undef;
1908                         }
1909                 }
1910         } else {
1911                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1912                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1913                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1914                                                hash=>$diffinfo->{'from_id'},
1915                                                file_name=>$from->{'file'});
1916                 } else {
1917                         delete $from->{'href'};
1918                 }
1919         }
1920
1921         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1922         if (!is_deleted($diffinfo)) { # file exists in result
1923                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1924                                      hash=>$diffinfo->{'to_id'},
1925                                      file_name=>$to->{'file'});
1926         } else {
1927                 delete $to->{'href'};
1928         }
1929 }
1930
1931 ## ......................................................................
1932 ## parse to array of hashes functions
1933
1934 sub git_get_heads_list {
1935         my $limit = shift;
1936         my @headslist;
1937
1938         open my $fd, '-|', git_cmd(), 'for-each-ref',
1939                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1940                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1941                 'refs/heads'
1942                 or return;
1943         while (my $line = <$fd>) {
1944                 my %ref_item;
1945
1946                 chomp $line;
1947                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1948                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1949                 my ($committer, $epoch, $tz) =
1950                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1951                 $name =~ s!^refs/heads/!!;
1952
1953                 $ref_item{'name'}  = $name;
1954                 $ref_item{'id'}    = $hash;
1955                 $ref_item{'title'} = $title || '(no commit message)';
1956                 $ref_item{'epoch'} = $epoch;
1957                 if ($epoch) {
1958                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1959                 } else {
1960                         $ref_item{'age'} = "unknown";
1961                 }
1962
1963                 push @headslist, \%ref_item;
1964         }
1965         close $fd;
1966
1967         return wantarray ? @headslist : \@headslist;
1968 }
1969
1970 sub git_get_tags_list {
1971         my $limit = shift;
1972         my @tagslist;
1973
1974         open my $fd, '-|', git_cmd(), 'for-each-ref',
1975                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1976                 '--format=%(objectname) %(objecttype) %(refname) '.
1977                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1978                 'refs/tags'
1979                 or return;
1980         while (my $line = <$fd>) {
1981                 my %ref_item;
1982
1983                 chomp $line;
1984                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1985                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1986                 my ($creator, $epoch, $tz) =
1987                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1988                 $name =~ s!^refs/tags/!!;
1989
1990                 $ref_item{'type'} = $type;
1991                 $ref_item{'id'} = $id;
1992                 $ref_item{'name'} = $name;
1993                 if ($type eq "tag") {
1994                         $ref_item{'subject'} = $title;
1995                         $ref_item{'reftype'} = $reftype;
1996                         $ref_item{'refid'}   = $refid;
1997                 } else {
1998                         $ref_item{'reftype'} = $type;
1999                         $ref_item{'refid'}   = $id;
2000                 }
2001
2002                 if ($type eq "tag" || $type eq "commit") {
2003                         $ref_item{'epoch'} = $epoch;
2004                         if ($epoch) {
2005                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2006                         } else {
2007                                 $ref_item{'age'} = "unknown";
2008                         }
2009                 }
2010
2011                 push @tagslist, \%ref_item;
2012         }
2013         close $fd;
2014
2015         return wantarray ? @tagslist : \@tagslist;
2016 }
2017
2018 ## ----------------------------------------------------------------------
2019 ## filesystem-related functions
2020
2021 sub get_file_owner {
2022         my $path = shift;
2023
2024         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2025         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2026         if (!defined $gcos) {
2027                 return undef;
2028         }
2029         my $owner = $gcos;
2030         $owner =~ s/[,;].*$//;
2031         return to_utf8($owner);
2032 }
2033
2034 ## ......................................................................
2035 ## mimetype related functions
2036
2037 sub mimetype_guess_file {
2038         my $filename = shift;
2039         my $mimemap = shift;
2040         -r $mimemap or return undef;
2041
2042         my %mimemap;
2043         open(MIME, $mimemap) or return undef;
2044         while (<MIME>) {
2045                 next if m/^#/; # skip comments
2046                 my ($mime, $exts) = split(/\t+/);
2047                 if (defined $exts) {
2048                         my @exts = split(/\s+/, $exts);
2049                         foreach my $ext (@exts) {
2050                                 $mimemap{$ext} = $mime;
2051                         }
2052                 }
2053         }
2054         close(MIME);
2055
2056         $filename =~ /\.([^.]*)$/;
2057         return $mimemap{$1};
2058 }
2059
2060 sub mimetype_guess {
2061         my $filename = shift;
2062         my $mime;
2063         $filename =~ /\./ or return undef;
2064
2065         if ($mimetypes_file) {
2066                 my $file = $mimetypes_file;
2067                 if ($file !~ m!^/!) { # if it is relative path
2068                         # it is relative to project
2069                         $file = "$projectroot/$project/$file";
2070                 }
2071                 $mime = mimetype_guess_file($filename, $file);
2072         }
2073         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2074         return $mime;
2075 }
2076
2077 sub blob_mimetype {
2078         my $fd = shift;
2079         my $filename = shift;
2080
2081         if ($filename) {
2082                 my $mime = mimetype_guess($filename);
2083                 $mime and return $mime;
2084         }
2085
2086         # just in case
2087         return $default_blob_plain_mimetype unless $fd;
2088
2089         if (-T $fd) {
2090                 return 'text/plain' .
2091                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2092         } elsif (! $filename) {
2093                 return 'application/octet-stream';
2094         } elsif ($filename =~ m/\.png$/i) {
2095                 return 'image/png';
2096         } elsif ($filename =~ m/\.gif$/i) {
2097                 return 'image/gif';
2098         } elsif ($filename =~ m/\.jpe?g$/i) {
2099                 return 'image/jpeg';
2100         } else {
2101                 return 'application/octet-stream';
2102         }
2103 }
2104
2105 ## ======================================================================
2106 ## functions printing HTML: header, footer, error page
2107
2108 sub git_header_html {
2109         my $status = shift || "200 OK";
2110         my $expires = shift;
2111
2112         my $title = "$site_name";
2113         if (defined $project) {
2114                 $title .= " - " . to_utf8($project);
2115                 if (defined $action) {
2116                         $title .= "/$action";
2117                         if (defined $file_name) {
2118                                 $title .= " - " . esc_path($file_name);
2119                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2120                                         $title .= "/";
2121                                 }
2122                         }
2123                 }
2124         }
2125         my $content_type;
2126         # require explicit support from the UA if we are to send the page as
2127         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2128         # we have to do this because MSIE sometimes globs '*/*', pretending to
2129         # support xhtml+xml but choking when it gets what it asked for.
2130         if (defined $cgi->http('HTTP_ACCEPT') &&
2131             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2132             $cgi->Accept('application/xhtml+xml') != 0) {
2133                 $content_type = 'application/xhtml+xml';
2134         } else {
2135                 $content_type = 'text/html';
2136         }
2137         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2138                            -status=> $status, -expires => $expires);
2139         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2140         print <<EOF;
2141 <?xml version="1.0" encoding="utf-8"?>
2142 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2143 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2144 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2145 <!-- git core binaries version $git_version -->
2146 <head>
2147 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2148 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2149 <meta name="robots" content="index, nofollow"/>
2150 <title>$title</title>
2151 EOF
2152 # print out each stylesheet that exist
2153         if (defined $stylesheet) {
2154 #provides backwards capability for those people who define style sheet in a config file
2155                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2156         } else {
2157                 foreach my $stylesheet (@stylesheets) {
2158                         next unless $stylesheet;
2159                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2160                 }
2161         }
2162         if (defined $project) {
2163                 printf('<link rel="alternate" title="%s log RSS feed" '.
2164                        'href="%s" type="application/rss+xml" />'."\n",
2165                        esc_param($project), href(action=>"rss"));
2166                 printf('<link rel="alternate" title="%s log Atom feed" '.
2167                        'href="%s" type="application/atom+xml" />'."\n",
2168                        esc_param($project), href(action=>"atom"));
2169         } else {
2170                 printf('<link rel="alternate" title="%s projects list" '.
2171                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2172                        $site_name, href(project=>undef, action=>"project_index"));
2173                 printf('<link rel="alternate" title="%s projects feeds" '.
2174                        'href="%s" type="text/x-opml"/>'."\n",
2175                        $site_name, href(project=>undef, action=>"opml"));
2176         }
2177         if (defined $favicon) {
2178                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2179         }
2180
2181         print "</head>\n" .
2182               "<body>\n";
2183
2184         if (-f $site_header) {
2185                 open (my $fd, $site_header);
2186                 print <$fd>;
2187                 close $fd;
2188         }
2189
2190         print "<div class=\"page_header\">\n" .
2191               $cgi->a({-href => esc_url($logo_url),
2192                        -title => $logo_label},
2193                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2194         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2195         if (defined $project) {
2196                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2197                 if (defined $action) {
2198                         print " / $action";
2199                 }
2200                 print "\n";
2201         }
2202         print "</div>\n";
2203
2204         my ($have_search) = gitweb_check_feature('search');
2205         if ((defined $project) && ($have_search)) {
2206                 if (!defined $searchtext) {
2207                         $searchtext = "";
2208                 }
2209                 my $search_hash;
2210                 if (defined $hash_base) {
2211                         $search_hash = $hash_base;
2212                 } elsif (defined $hash) {
2213                         $search_hash = $hash;
2214                 } else {
2215                         $search_hash = "HEAD";
2216                 }
2217                 my $action = $my_uri;
2218                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2219                 if ($use_pathinfo) {
2220                         $action .= "/$project";
2221                 } else {
2222                         $cgi->param("p", $project);
2223                 }
2224                 $cgi->param("a", "search");
2225                 $cgi->param("h", $search_hash);
2226                 print $cgi->startform(-method => "get", -action => $action) .
2227                       "<div class=\"search\">\n" .
2228                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2229                       $cgi->hidden(-name => "a") . "\n" .
2230                       $cgi->hidden(-name => "h") . "\n" .
2231                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2232                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2233                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2234                       " search:\n",
2235                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2236                       "</div>" .
2237                       $cgi->end_form() . "\n";
2238         }
2239 }
2240
2241 sub git_footer_html {
2242         print "<div class=\"page_footer\">\n";
2243         if (defined $project) {
2244                 my $descr = git_get_project_description($project);
2245                 if (defined $descr) {
2246                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2247                 }
2248                 print $cgi->a({-href => href(action=>"rss"),
2249                               -class => "rss_logo"}, "RSS") . " ";
2250                 print $cgi->a({-href => href(action=>"atom"),
2251                               -class => "rss_logo"}, "Atom") . "\n";
2252         } else {
2253                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2254                               -class => "rss_logo"}, "OPML") . " ";
2255                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2256                               -class => "rss_logo"}, "TXT") . "\n";
2257         }
2258         print "</div>\n" ;
2259
2260         if (-f $site_footer) {
2261                 open (my $fd, $site_footer);
2262                 print <$fd>;
2263                 close $fd;
2264         }
2265
2266         print "</body>\n" .
2267               "</html>";
2268 }
2269
2270 sub die_error {
2271         my $status = shift || "403 Forbidden";
2272         my $error = shift || "Malformed query, file missing or permission denied";
2273
2274         git_header_html($status);
2275         print <<EOF;
2276 <div class="page_body">
2277 <br /><br />
2278 $status - $error
2279 <br />
2280 </div>
2281 EOF
2282         git_footer_html();
2283         exit;
2284 }
2285
2286 ## ----------------------------------------------------------------------
2287 ## functions printing or outputting HTML: navigation
2288
2289 sub git_print_page_nav {
2290         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2291         $extra = '' if !defined $extra; # pager or formats
2292
2293         my @navs = qw(summary shortlog log commit commitdiff tree);
2294         if ($suppress) {
2295                 @navs = grep { $_ ne $suppress } @navs;
2296         }
2297
2298         my %arg = map { $_ => {action=>$_} } @navs;
2299         if (defined $head) {
2300                 for (qw(commit commitdiff)) {
2301                         $arg{$_}{'hash'} = $head;
2302                 }
2303                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2304                         for (qw(shortlog log)) {
2305                                 $arg{$_}{'hash'} = $head;
2306                         }
2307                 }
2308         }
2309         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2310         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2311
2312         print "<div class=\"page_nav\">\n" .
2313                 (join " | ",
2314                  map { $_ eq $current ?
2315                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2316                  } @navs);
2317         print "<br/>\n$extra<br/>\n" .
2318               "</div>\n";
2319 }
2320
2321 sub format_paging_nav {
2322         my ($action, $hash, $head, $page, $nrevs) = @_;
2323         my $paging_nav;
2324
2325
2326         if ($hash ne $head || $page) {
2327                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2328         } else {
2329                 $paging_nav .= "HEAD";
2330         }
2331
2332         if ($page > 0) {
2333                 $paging_nav .= " &sdot; " .
2334                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2335                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2336         } else {
2337                 $paging_nav .= " &sdot; prev";
2338         }
2339
2340         if ($nrevs >= (100 * ($page+1)-1)) {
2341                 $paging_nav .= " &sdot; " .
2342                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2343                                  -accesskey => "n", -title => "Alt-n"}, "next");
2344         } else {
2345                 $paging_nav .= " &sdot; next";
2346         }
2347
2348         return $paging_nav;
2349 }
2350
2351 ## ......................................................................
2352 ## functions printing or outputting HTML: div
2353
2354 sub git_print_header_div {
2355         my ($action, $title, $hash, $hash_base) = @_;
2356         my %args = ();
2357
2358         $args{'action'} = $action;
2359         $args{'hash'} = $hash if $hash;
2360         $args{'hash_base'} = $hash_base if $hash_base;
2361
2362         print "<div class=\"header\">\n" .
2363               $cgi->a({-href => href(%args), -class => "title"},
2364               $title ? $title : $action) .
2365               "\n</div>\n";
2366 }
2367
2368 #sub git_print_authorship (\%) {
2369 sub git_print_authorship {
2370         my $co = shift;
2371
2372         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2373         print "<div class=\"author_date\">" .
2374               esc_html($co->{'author_name'}) .
2375               " [$ad{'rfc2822'}";
2376         if ($ad{'hour_local'} < 6) {
2377                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2378                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2379         } else {
2380                 printf(" (%02d:%02d %s)",
2381                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2382         }
2383         print "]</div>\n";
2384 }
2385
2386 sub git_print_page_path {
2387         my $name = shift;
2388         my $type = shift;
2389         my $hb = shift;
2390
2391
2392         print "<div class=\"page_path\">";
2393         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2394                       -title => 'tree root'}, to_utf8("[$project]"));
2395         print " / ";
2396         if (defined $name) {
2397                 my @dirname = split '/', $name;
2398                 my $basename = pop @dirname;
2399                 my $fullname = '';
2400
2401                 foreach my $dir (@dirname) {
2402                         $fullname .= ($fullname ? '/' : '') . $dir;
2403                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2404                                                      hash_base=>$hb),
2405                                       -title => $fullname}, esc_path($dir));
2406                         print " / ";
2407                 }
2408                 if (defined $type && $type eq 'blob') {
2409                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2410                                                      hash_base=>$hb),
2411                                       -title => $name}, esc_path($basename));
2412                 } elsif (defined $type && $type eq 'tree') {
2413                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2414                                                      hash_base=>$hb),
2415                                       -title => $name}, esc_path($basename));
2416                         print " / ";
2417                 } else {
2418                         print esc_path($basename);
2419                 }
2420         }
2421         print "<br/></div>\n";
2422 }
2423
2424 # sub git_print_log (\@;%) {
2425 sub git_print_log ($;%) {
2426         my $log = shift;
2427         my %opts = @_;
2428
2429         if ($opts{'-remove_title'}) {
2430                 # remove title, i.e. first line of log
2431                 shift @$log;
2432         }
2433         # remove leading empty lines
2434         while (defined $log->[0] && $log->[0] eq "") {
2435                 shift @$log;
2436         }
2437
2438         # print log
2439         my $signoff = 0;
2440         my $empty = 0;
2441         foreach my $line (@$log) {
2442                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2443                         $signoff = 1;
2444                         $empty = 0;
2445                         if (! $opts{'-remove_signoff'}) {
2446                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2447                                 next;
2448                         } else {
2449                                 # remove signoff lines
2450                                 next;
2451                         }
2452                 } else {
2453                         $signoff = 0;
2454                 }
2455
2456                 # print only one empty line
2457                 # do not print empty line after signoff
2458                 if ($line eq "") {
2459                         next if ($empty || $signoff);
2460                         $empty = 1;
2461                 } else {
2462                         $empty = 0;
2463                 }
2464
2465                 print format_log_line_html($line) . "<br/>\n";
2466         }
2467
2468         if ($opts{'-final_empty_line'}) {
2469                 # end with single empty line
2470                 print "<br/>\n" unless $empty;
2471         }
2472 }
2473
2474 # return link target (what link points to)
2475 sub git_get_link_target {
2476         my $hash = shift;
2477         my $link_target;
2478
2479         # read link
2480         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2481                 or return;
2482         {
2483                 local $/;
2484                 $link_target = <$fd>;
2485         }
2486         close $fd
2487                 or return;
2488
2489         return $link_target;
2490 }
2491
2492 # given link target, and the directory (basedir) the link is in,
2493 # return target of link relative to top directory (top tree);
2494 # return undef if it is not possible (including absolute links).
2495 sub normalize_link_target {
2496         my ($link_target, $basedir, $hash_base) = @_;
2497
2498         # we can normalize symlink target only if $hash_base is provided
2499         return unless $hash_base;
2500
2501         # absolute symlinks (beginning with '/') cannot be normalized
2502         return if (substr($link_target, 0, 1) eq '/');
2503
2504         # normalize link target to path from top (root) tree (dir)
2505         my $path;
2506         if ($basedir) {
2507                 $path = $basedir . '/' . $link_target;
2508         } else {
2509                 # we are in top (root) tree (dir)
2510                 $path = $link_target;
2511         }
2512
2513         # remove //, /./, and /../
2514         my @path_parts;
2515         foreach my $part (split('/', $path)) {
2516                 # discard '.' and ''
2517                 next if (!$part || $part eq '.');
2518                 # handle '..'
2519                 if ($part eq '..') {
2520                         if (@path_parts) {
2521                                 pop @path_parts;
2522                         } else {
2523                                 # link leads outside repository (outside top dir)
2524                                 return;
2525                         }
2526                 } else {
2527                         push @path_parts, $part;
2528                 }
2529         }
2530         $path = join('/', @path_parts);
2531
2532         return $path;
2533 }
2534
2535 # print tree entry (row of git_tree), but without encompassing <tr> element
2536 sub git_print_tree_entry {
2537         my ($t, $basedir, $hash_base, $have_blame) = @_;
2538
2539         my %base_key = ();
2540         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2541
2542         # The format of a table row is: mode list link.  Where mode is
2543         # the mode of the entry, list is the name of the entry, an href,
2544         # and link is the action links of the entry.
2545
2546         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2547         if ($t->{'type'} eq "blob") {
2548                 print "<td class=\"list\">" .
2549                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2550                                                file_name=>"$basedir$t->{'name'}", %base_key),
2551                                 -class => "list"}, esc_path($t->{'name'}));
2552                 if (S_ISLNK(oct $t->{'mode'})) {
2553                         my $link_target = git_get_link_target($t->{'hash'});
2554                         if ($link_target) {
2555                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2556                                 if (defined $norm_target) {
2557                                         print " -> " .
2558                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2559                                                                      file_name=>$norm_target),
2560                                                        -title => $norm_target}, esc_path($link_target));
2561                                 } else {
2562                                         print " -> " . esc_path($link_target);
2563                                 }
2564                         }
2565                 }
2566                 print "</td>\n";
2567                 print "<td class=\"link\">";
2568                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2569                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2570                               "blob");
2571                 if ($have_blame) {
2572                         print " | " .
2573                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2574                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2575                                       "blame");
2576                 }
2577                 if (defined $hash_base) {
2578                         print " | " .
2579                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2580                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2581                                       "history");
2582                 }
2583                 print " | " .
2584                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2585                                                file_name=>"$basedir$t->{'name'}")},
2586                                 "raw");
2587                 print "</td>\n";
2588
2589         } elsif ($t->{'type'} eq "tree") {
2590                 print "<td class=\"list\">";
2591                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2592                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2593                               esc_path($t->{'name'}));
2594                 print "</td>\n";
2595                 print "<td class=\"link\">";
2596                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2597                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2598                               "tree");
2599                 if (defined $hash_base) {
2600                         print " | " .
2601                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2602                                                      file_name=>"$basedir$t->{'name'}")},
2603                                       "history");
2604                 }
2605                 print "</td>\n";
2606         }
2607 }
2608
2609 ## ......................................................................
2610 ## functions printing large fragments of HTML
2611
2612 sub fill_from_file_info {
2613         my ($diff, @parents) = @_;
2614
2615         $diff->{'from_file'} = [ ];
2616         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2617         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2618                 if ($diff->{'status'}[$i] eq 'R' ||
2619                     $diff->{'status'}[$i] eq 'C') {
2620                         $diff->{'from_file'}[$i] =
2621                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2622                 }
2623         }
2624
2625         return $diff;
2626 }
2627
2628 # parameters can be strings, or references to arrays of strings
2629 sub from_ids_eq {
2630         my ($a, $b) = @_;
2631
2632         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2633                 for (my $i = 0; $i < @$a; ++$i) {
2634                         return 0 unless ($a->[$i] eq $b->[$i]);
2635                 }
2636                 return 1;
2637         } elsif (!ref($a) && !ref($b)) {
2638                 return $a eq $b;
2639         } else {
2640                 return 0;
2641         }
2642 }
2643
2644 sub is_deleted {
2645         my $diffinfo = shift;
2646
2647         return $diffinfo->{'to_id'} eq ('0' x 40);
2648 }
2649
2650 sub git_difftree_body {
2651         my ($difftree, $hash, @parents) = @_;
2652         my ($parent) = $parents[0];
2653         my ($have_blame) = gitweb_check_feature('blame');
2654         print "<div class=\"list_head\">\n";
2655         if ($#{$difftree} > 10) {
2656                 print(($#{$difftree} + 1) . " files changed:\n");
2657         }
2658         print "</div>\n";
2659
2660         print "<table class=\"" .
2661               (@parents > 1 ? "combined " : "") .
2662               "diff_tree\">\n";
2663
2664         # header only for combined diff in 'commitdiff' view
2665         my $has_header = @parents > 1 && $action eq 'commitdiff';
2666         if ($has_header) {
2667                 # table header
2668                 print "<thead><tr>\n" .
2669                        "<th></th><th></th>\n"; # filename, patchN link
2670                 for (my $i = 0; $i < @parents; $i++) {
2671                         my $par = $parents[$i];
2672                         print "<th>" .
2673                               $cgi->a({-href => href(action=>"commitdiff",
2674                                                      hash=>$hash, hash_parent=>$par),
2675                                        -title => 'commitdiff to parent number ' .
2676                                                   ($i+1) . ': ' . substr($par,0,7)},
2677                                       $i+1) .
2678                               "&nbsp;</th>\n";
2679                 }
2680                 print "</tr></thead>\n<tbody>\n";
2681         }
2682
2683         my $alternate = 1;
2684         my $patchno = 0;
2685         foreach my $line (@{$difftree}) {
2686                 my $diff;
2687                 if (ref($line) eq "HASH") {
2688                         # pre-parsed (or generated by hand)
2689                         $diff = $line;
2690                 } else {
2691                         $diff = parse_difftree_raw_line($line);
2692                 }
2693
2694                 if ($alternate) {
2695                         print "<tr class=\"dark\">\n";
2696                 } else {
2697                         print "<tr class=\"light\">\n";
2698                 }
2699                 $alternate ^= 1;
2700
2701                 if (exists $diff->{'nparents'}) { # combined diff
2702
2703                         fill_from_file_info($diff, @parents)
2704                                 unless exists $diff->{'from_file'};
2705
2706                         if (!is_deleted($diff)) {
2707                                 # file exists in the result (child) commit
2708                                 print "<td>" .
2709                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2710                                                              file_name=>$diff->{'to_file'},
2711                                                              hash_base=>$hash),
2712                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2713                                       "</td>\n";
2714                         } else {
2715                                 print "<td>" .
2716                                       esc_path($diff->{'to_file'}) .
2717                                       "</td>\n";
2718                         }
2719
2720                         if ($action eq 'commitdiff') {
2721                                 # link to patch
2722                                 $patchno++;
2723                                 print "<td class=\"link\">" .
2724                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2725                                       " | " .
2726                                       "</td>\n";
2727                         }
2728
2729                         my $has_history = 0;
2730                         my $not_deleted = 0;
2731                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2732                                 my $hash_parent = $parents[$i];
2733                                 my $from_hash = $diff->{'from_id'}[$i];
2734                                 my $from_path = $diff->{'from_file'}[$i];
2735                                 my $status = $diff->{'status'}[$i];
2736
2737                                 $has_history ||= ($status ne 'A');
2738                                 $not_deleted ||= ($status ne 'D');
2739
2740                                 if ($status eq 'A') {
2741                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2742                                 } elsif ($status eq 'D') {
2743                                         print "<td class=\"link\">" .
2744                                               $cgi->a({-href => href(action=>"blob",
2745                                                                      hash_base=>$hash,
2746                                                                      hash=>$from_hash,
2747                                                                      file_name=>$from_path)},
2748                                                       "blob" . ($i+1)) .
2749                                               " | </td>\n";
2750                                 } else {
2751                                         if ($diff->{'to_id'} eq $from_hash) {
2752                                                 print "<td class=\"link nochange\">";
2753                                         } else {
2754                                                 print "<td class=\"link\">";
2755                                         }
2756                                         print $cgi->a({-href => href(action=>"blobdiff",
2757                                                                      hash=>$diff->{'to_id'},
2758                                                                      hash_parent=>$from_hash,
2759                                                                      hash_base=>$hash,
2760                                                                      hash_parent_base=>$hash_parent,
2761                                                                      file_name=>$diff->{'to_file'},
2762                                                                      file_parent=>$from_path)},
2763                                                       "diff" . ($i+1)) .
2764                                               " | </td>\n";
2765                                 }
2766                         }
2767
2768                         print "<td class=\"link\">";
2769                         if ($not_deleted) {
2770                                 print $cgi->a({-href => href(action=>"blob",
2771                                                              hash=>$diff->{'to_id'},
2772                                                              file_name=>$diff->{'to_file'},
2773                                                              hash_base=>$hash)},
2774                                               "blob");
2775                                 print " | " if ($has_history);
2776                         }
2777                         if ($has_history) {
2778                                 print $cgi->a({-href => href(action=>"history",
2779                                                              file_name=>$diff->{'to_file'},
2780                                                              hash_base=>$hash)},
2781                                               "history");
2782                         }
2783                         print "</td>\n";
2784
2785                         print "</tr>\n";
2786                         next; # instead of 'else' clause, to avoid extra indent
2787                 }
2788                 # else ordinary diff
2789
2790                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2791                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2792                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2793                         $to_mode_oct = oct $diff->{'to_mode'};
2794                         if (S_ISREG($to_mode_oct)) { # only for regular file
2795                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2796                         }
2797                         $to_file_type = file_type($diff->{'to_mode'});
2798                 }
2799                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2800                         $from_mode_oct = oct $diff->{'from_mode'};
2801                         if (S_ISREG($to_mode_oct)) { # only for regular file
2802                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2803                         }
2804                         $from_file_type = file_type($diff->{'from_mode'});
2805                 }
2806
2807                 if ($diff->{'status'} eq "A") { # created
2808                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2809                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2810                         $mode_chng   .= "]</span>";
2811                         print "<td>";
2812                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2813                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2814                                       -class => "list"}, esc_path($diff->{'file'}));
2815                         print "</td>\n";
2816                         print "<td>$mode_chng</td>\n";
2817                         print "<td class=\"link\">";
2818                         if ($action eq 'commitdiff') {
2819                                 # link to patch
2820                                 $patchno++;
2821                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2822                                 print " | ";
2823                         }
2824                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2825                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2826                                       "blob");
2827                         print "</td>\n";
2828
2829                 } elsif ($diff->{'status'} eq "D") { # deleted
2830                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2831                         print "<td>";
2832                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2833                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2834                                        -class => "list"}, esc_path($diff->{'file'}));
2835                         print "</td>\n";
2836                         print "<td>$mode_chng</td>\n";
2837                         print "<td class=\"link\">";
2838                         if ($action eq 'commitdiff') {
2839                                 # link to patch
2840                                 $patchno++;
2841                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2842                                 print " | ";
2843                         }
2844                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2845                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2846                                       "blob") . " | ";
2847                         if ($have_blame) {
2848                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2849                                                              file_name=>$diff->{'file'})},
2850                                               "blame") . " | ";
2851                         }
2852                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2853                                                      file_name=>$diff->{'file'})},
2854                                       "history");
2855                         print "</td>\n";
2856
2857                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2858                         my $mode_chnge = "";
2859                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2860                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2861                                 if ($from_file_type ne $to_file_type) {
2862                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2863                                 }
2864                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2865                                         if ($from_mode_str && $to_mode_str) {
2866                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2867                                         } elsif ($to_mode_str) {
2868                                                 $mode_chnge .= " mode: $to_mode_str";
2869                                         }
2870                                 }
2871                                 $mode_chnge .= "]</span>\n";
2872                         }
2873                         print "<td>";
2874                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2875                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2876                                       -class => "list"}, esc_path($diff->{'file'}));
2877                         print "</td>\n";
2878                         print "<td>$mode_chnge</td>\n";
2879                         print "<td class=\"link\">";
2880                         if ($action eq 'commitdiff') {
2881                                 # link to patch
2882                                 $patchno++;
2883                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2884                                       " | ";
2885                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2886                                 # "commit" view and modified file (not onlu mode changed)
2887                                 print $cgi->a({-href => href(action=>"blobdiff",
2888                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2889                                                              hash_base=>$hash, hash_parent_base=>$parent,
2890                                                              file_name=>$diff->{'file'})},
2891                                               "diff") .
2892                                       " | ";
2893                         }
2894                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2895                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2896                                        "blob") . " | ";
2897                         if ($have_blame) {
2898                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2899                                                              file_name=>$diff->{'file'})},
2900                                               "blame") . " | ";
2901                         }
2902                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2903                                                      file_name=>$diff->{'file'})},
2904                                       "history");
2905                         print "</td>\n";
2906
2907                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2908                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2909                         my $nstatus = $status_name{$diff->{'status'}};
2910                         my $mode_chng = "";
2911                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2912                                 # mode also for directories, so we cannot use $to_mode_str
2913                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2914                         }
2915                         print "<td>" .
2916                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2917                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2918                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2919                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2920                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2921                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2922                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2923                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2924                               "<td class=\"link\">";
2925                         if ($action eq 'commitdiff') {
2926                                 # link to patch
2927                                 $patchno++;
2928                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2929                                       " | ";
2930                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2931                                 # "commit" view and modified file (not only pure rename or copy)
2932                                 print $cgi->a({-href => href(action=>"blobdiff",
2933                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2934                                                              hash_base=>$hash, hash_parent_base=>$parent,
2935                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2936                                               "diff") .
2937                                       " | ";
2938                         }
2939                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2940                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2941                                       "blob") . " | ";
2942                         if ($have_blame) {
2943                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2944                                                              file_name=>$diff->{'to_file'})},
2945                                               "blame") . " | ";
2946                         }
2947                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2948                                                     file_name=>$diff->{'to_file'})},
2949                                       "history");
2950                         print "</td>\n";
2951
2952                 } # we should not encounter Unmerged (U) or Unknown (X) status
2953                 print "</tr>\n";
2954         }
2955         print "</tbody>" if $has_header;
2956         print "</table>\n";
2957 }
2958
2959 sub git_patchset_body {
2960         my ($fd, $difftree, $hash, @hash_parents) = @_;
2961         my ($hash_parent) = $hash_parents[0];
2962
2963         my $patch_idx = 0;
2964         my $patch_number = 0;
2965         my $patch_line;
2966         my $diffinfo;
2967         my (%from, %to);
2968
2969         print "<div class=\"patchset\">\n";
2970
2971         # skip to first patch
2972         while ($patch_line = <$fd>) {
2973                 chomp $patch_line;
2974
2975                 last if ($patch_line =~ m/^diff /);
2976         }
2977
2978  PATCH:
2979         while ($patch_line) {
2980                 my @diff_header;
2981                 my ($from_id, $to_id);
2982
2983                 # git diff header
2984                 #assert($patch_line =~ m/^diff /) if DEBUG;
2985                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2986                 $patch_number++;
2987                 push @diff_header, $patch_line;
2988
2989                 # extended diff header
2990         EXTENDED_HEADER:
2991                 while ($patch_line = <$fd>) {
2992                         chomp $patch_line;
2993
2994                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2995
2996                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2997                                 $from_id = $1;
2998                                 $to_id   = $2;
2999                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3000                                 $from_id = [ split(',', $1) ];
3001                                 $to_id   = $2;
3002                         }
3003
3004                         push @diff_header, $patch_line;
3005                 }
3006                 my $last_patch_line = $patch_line;
3007
3008                 # check if current patch belong to current raw line
3009                 # and parse raw git-diff line if needed
3010                 if (defined $diffinfo &&
3011                     defined $from_id && defined $to_id &&
3012                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3013                     $diffinfo->{'to_id'} eq $to_id) {
3014                         # this is continuation of a split patch
3015                         print "<div class=\"patch cont\">\n";
3016                 } else {
3017                         # advance raw git-diff output if needed
3018                         $patch_idx++ if defined $diffinfo;
3019
3020                         # compact combined diff output can have some patches skipped
3021                         # find which patch (using pathname of result) we are at now
3022                         my $to_name;
3023                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3024                                 $to_name = $1;
3025                         }
3026
3027                         do {
3028                                 # read and prepare patch information
3029                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3030                                         # pre-parsed (or generated by hand)
3031                                         $diffinfo = $difftree->[$patch_idx];
3032                                 } else {
3033                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3034                                 }
3035
3036                                 # check if current raw line has no patch (it got simplified)
3037                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3038                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3039                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3040                                               "</div>\n";  # class="patch"
3041
3042                                         $patch_idx++;
3043                                         $patch_number++;
3044                                 }
3045                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3046                                  $patch_idx > $#$difftree);
3047                         # modifies %from, %to hashes
3048                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3049                         if ($diffinfo->{'nparents'}) {
3050                                 # combined diff
3051                                 $from{'file'} = [];
3052                                 $from{'href'} = [];
3053                                 fill_from_file_info($diffinfo, @hash_parents)
3054                                         unless exists $diffinfo->{'from_file'};
3055                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3056                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3057                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3058                                                 $from{'href'}[$i] = href(action=>"blob",
3059                                                                          hash_base=>$hash_parents[$i],
3060                                                                          hash=>$diffinfo->{'from_id'}[$i],
3061                                                                          file_name=>$from{'file'}[$i]);
3062                                         } else {
3063                                                 $from{'href'}[$i] = undef;
3064                                         }
3065                                 }
3066                         } else {
3067                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3068                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3069                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3070                                                              hash=>$diffinfo->{'from_id'},
3071                                                              file_name=>$from{'file'});
3072                                 } else {
3073                                         delete $from{'href'};
3074                                 }
3075                         }
3076
3077                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3078                         if (!is_deleted($diffinfo)) { # file exists in result
3079                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3080                                                    hash=>$diffinfo->{'to_id'},
3081                                                    file_name=>$to{'file'});
3082                         } else {
3083                                 delete $to{'href'};
3084                         }
3085                         # this is first patch for raw difftree line with $patch_idx index
3086                         # we index @$difftree array from 0, but number patches from 1
3087                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3088                 }
3089
3090                 # print "git diff" header
3091                 $patch_line = shift @diff_header;
3092                 print format_git_diff_header_line($patch_line, $diffinfo,
3093                                                   \%from, \%to);
3094
3095                 # print extended diff header
3096                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3097         EXTENDED_HEADER:
3098                 foreach $patch_line (@diff_header) {
3099                         print format_extended_diff_header_line($patch_line, $diffinfo,
3100                                                                \%from, \%to);
3101                 }
3102                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3103
3104                 # from-file/to-file diff header
3105                 $patch_line = $last_patch_line;
3106                 if (! $patch_line) {
3107                         print "</div>\n"; # class="patch"
3108                         last PATCH;
3109                 }
3110                 next PATCH if ($patch_line =~ m/^diff /);
3111                 #assert($patch_line =~ m/^---/) if DEBUG;
3112                 #assert($patch_line eq $last_patch_line) if DEBUG;
3113
3114                 $patch_line = <$fd>;
3115                 chomp $patch_line;
3116                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3117
3118                 print format_diff_from_to_header($last_patch_line, $patch_line,
3119                                                  $diffinfo, \%from, \%to,
3120                                                  @hash_parents);
3121
3122                 # the patch itself
3123         LINE:
3124                 while ($patch_line = <$fd>) {
3125                         chomp $patch_line;
3126
3127                         next PATCH if ($patch_line =~ m/^diff /);
3128
3129                         print format_diff_line($patch_line, \%from, \%to);
3130                 }
3131
3132         } continue {
3133                 print "</div>\n"; # class="patch"
3134         }
3135
3136         # for compact combined (--cc) format, with chunk and patch simpliciaction
3137         # patchset might be empty, but there might be unprocessed raw lines
3138         for ($patch_idx++ if $patch_number > 0;
3139              $patch_idx < @$difftree;
3140              $patch_idx++) {
3141                 # read and prepare patch information
3142                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3143                         # pre-parsed (or generated by hand)
3144                         $diffinfo = $difftree->[$patch_idx];
3145                 } else {
3146                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3147                 }
3148
3149                 # generate anchor for "patch" links in difftree / whatchanged part
3150                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3151                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3152                       "</div>\n";  # class="patch"
3153
3154                 $patch_number++;
3155         }
3156
3157         if ($patch_number == 0) {
3158                 if (@hash_parents > 1) {
3159                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3160                 } else {
3161                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3162                 }
3163         }
3164
3165         print "</div>\n"; # class="patchset"
3166 }
3167
3168 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3169
3170 sub git_project_list_body {
3171         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3172
3173         my ($check_forks) = gitweb_check_feature('forks');
3174
3175         my @projects;
3176         foreach my $pr (@$projlist) {
3177                 my (@aa) = git_get_last_activity($pr->{'path'});
3178                 unless (@aa) {
3179                         next;
3180                 }
3181                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3182                 if (!defined $pr->{'descr'}) {
3183                         my $descr = git_get_project_description($pr->{'path'}) || "";
3184                         $pr->{'descr_long'} = to_utf8($descr);
3185                         $pr->{'descr'} = chop_str($descr, 25, 5);
3186                 }
3187                 if (!defined $pr->{'owner'}) {
3188                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3189                 }
3190                 if ($check_forks) {
3191                         my $pname = $pr->{'path'};
3192                         if (($pname =~ s/\.git$//) &&
3193                             ($pname !~ /\/$/) &&
3194                             (-d "$projectroot/$pname")) {
3195                                 $pr->{'forks'} = "-d $projectroot/$pname";
3196                         }
3197                         else {
3198                                 $pr->{'forks'} = 0;
3199                         }
3200                 }
3201                 push @projects, $pr;
3202         }
3203
3204         $order ||= $default_projects_order;
3205         $from = 0 unless defined $from;
3206         $to = $#projects if (!defined $to || $#projects < $to);
3207
3208         print "<table class=\"project_list\">\n";
3209         unless ($no_header) {
3210                 print "<tr>\n";
3211                 if ($check_forks) {
3212                         print "<th></th>\n";
3213                 }
3214                 if ($order eq "project") {
3215                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3216                         print "<th>Project</th>\n";
3217                 } else {
3218                         print "<th>" .
3219                               $cgi->a({-href => href(project=>undef, order=>'project'),
3220                                        -class => "header"}, "Project") .
3221                               "</th>\n";
3222                 }
3223                 if ($order eq "descr") {
3224                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3225                         print "<th>Description</th>\n";
3226                 } else {
3227                         print "<th>" .
3228                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3229                                        -class => "header"}, "Description") .
3230                               "</th>\n";
3231                 }
3232                 if ($order eq "owner") {
3233                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3234                         print "<th>Owner</th>\n";
3235                 } else {
3236                         print "<th>" .
3237                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3238                                        -class => "header"}, "Owner") .
3239                               "</th>\n";
3240                 }
3241                 if ($order eq "age") {
3242                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3243                         print "<th>Last Change</th>\n";
3244                 } else {
3245                         print "<th>" .
3246                               $cgi->a({-href => href(project=>undef, order=>'age'),
3247                                        -class => "header"}, "Last Change") .
3248                               "</th>\n";
3249                 }
3250                 print "<th></th>\n" .
3251                       "</tr>\n";
3252         }
3253         my $alternate = 1;
3254         for (my $i = $from; $i <= $to; $i++) {
3255                 my $pr = $projects[$i];
3256                 if ($alternate) {
3257                         print "<tr class=\"dark\">\n";
3258                 } else {
3259                         print "<tr class=\"light\">\n";
3260                 }
3261                 $alternate ^= 1;
3262                 if ($check_forks) {
3263                         print "<td>";
3264                         if ($pr->{'forks'}) {
3265                                 print "<!-- $pr->{'forks'} -->\n";
3266                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3267                         }
3268                         print "</td>\n";
3269                 }
3270                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3271                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3272                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3273                                         -class => "list", -title => $pr->{'descr_long'}},
3274                                         esc_html($pr->{'descr'})) . "</td>\n" .
3275                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3276                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3277                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3278                       "<td class=\"link\">" .
3279                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3280                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3281                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3282                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3283                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3284                       "</td>\n" .
3285                       "</tr>\n";
3286         }
3287         if (defined $extra) {
3288                 print "<tr>\n";
3289                 if ($check_forks) {
3290                         print "<td></td>\n";
3291                 }
3292                 print "<td colspan=\"5\">$extra</td>\n" .
3293                       "</tr>\n";
3294         }
3295         print "</table>\n";
3296 }
3297
3298 sub git_shortlog_body {
3299         # uses global variable $project
3300         my ($commitlist, $from, $to, $refs, $extra) = @_;
3301
3302         my $have_snapshot = gitweb_have_snapshot();
3303
3304         $from = 0 unless defined $from;
3305         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3306
3307         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3308         my $alternate = 1;
3309         for (my $i = $from; $i <= $to; $i++) {
3310                 my %co = %{$commitlist->[$i]};
3311                 my $commit = $co{'id'};
3312                 my $ref = format_ref_marker($refs, $commit);
3313                 if ($alternate) {
3314                         print "<tr class=\"dark\">\n";
3315                 } else {
3316                         print "<tr class=\"light\">\n";
3317                 }
3318                 $alternate ^= 1;
3319                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3320                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3321                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3322                       "<td>";
3323                 print format_subject_html($co{'title'}, $co{'title_short'},
3324                                           href(action=>"commit", hash=>$commit), $ref);
3325                 print "</td>\n" .
3326                       "<td class=\"link\">" .
3327                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3328                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3329                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3330                 if ($have_snapshot) {
3331                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3332                 }
3333                 print "</td>\n" .
3334                       "</tr>\n";
3335         }
3336         if (defined $extra) {
3337                 print "<tr>\n" .
3338                       "<td colspan=\"4\">$extra</td>\n" .
3339                       "</tr>\n";
3340         }
3341         print "</table>\n";
3342 }
3343
3344 sub git_history_body {
3345         # Warning: assumes constant type (blob or tree) during history
3346         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3347
3348         $from = 0 unless defined $from;
3349         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3350
3351         print "<table class=\"history\" cellspacing=\"0\">\n";
3352         my $alternate = 1;
3353         for (my $i = $from; $i <= $to; $i++) {
3354                 my %co = %{$commitlist->[$i]};
3355                 if (!%co) {
3356                         next;
3357                 }
3358                 my $commit = $co{'id'};
3359
3360                 my $ref = format_ref_marker($refs, $commit);
3361
3362                 if ($alternate) {
3363                         print "<tr class=\"dark\">\n";
3364                 } else {
3365                         print "<tr class=\"light\">\n";
3366                 }
3367                 $alternate ^= 1;
3368                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3369                       # shortlog uses      chop_str($co{'author_name'}, 10)
3370                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3371                       "<td>";
3372                 # originally git_history used chop_str($co{'title'}, 50)
3373                 print format_subject_html($co{'title'}, $co{'title_short'},
3374                                           href(action=>"commit", hash=>$commit), $ref);
3375                 print "</td>\n" .
3376                       "<td class=\"link\">" .
3377                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3378                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3379
3380                 if ($ftype eq 'blob') {
3381                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3382                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3383                         if (defined $blob_current && defined $blob_parent &&
3384                                         $blob_current ne $blob_parent) {
3385                                 print " | " .
3386                                         $cgi->a({-href => href(action=>"blobdiff",
3387                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3388                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3389                                                                file_name=>$file_name)},
3390                                                 "diff to current");
3391                         }
3392                 }
3393                 print "</td>\n" .
3394                       "</tr>\n";
3395         }
3396         if (defined $extra) {
3397                 print "<tr>\n" .
3398                       "<td colspan=\"4\">$extra</td>\n" .
3399                       "</tr>\n";
3400         }
3401         print "</table>\n";
3402 }
3403
3404 sub git_tags_body {
3405         # uses global variable $project
3406         my ($taglist, $from, $to, $extra) = @_;
3407         $from = 0 unless defined $from;
3408         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3409
3410         print "<table class=\"tags\" cellspacing=\"0\">\n";
3411         my $alternate = 1;
3412         for (my $i = $from; $i <= $to; $i++) {
3413                 my $entry = $taglist->[$i];
3414                 my %tag = %$entry;
3415                 my $comment = $tag{'subject'};
3416                 my $comment_short;
3417                 if (defined $comment) {
3418                         $comment_short = chop_str($comment, 30, 5);
3419                 }
3420                 if ($alternate) {
3421                         print "<tr class=\"dark\">\n";
3422                 } else {
3423                         print "<tr class=\"light\">\n";
3424                 }
3425                 $alternate ^= 1;
3426                 if (defined $tag{'age'}) {
3427                         print "<td><i>$tag{'age'}</i></td>\n";
3428                 } else {
3429                         print "<td></td>\n";
3430                 }
3431                 print "<td>" .
3432                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3433                                -class => "list name"}, esc_html($tag{'name'})) .
3434                       "</td>\n" .
3435                       "<td>";
3436                 if (defined $comment) {
3437                         print format_subject_html($comment, $comment_short,
3438                                                   href(action=>"tag", hash=>$tag{'id'}));
3439                 }
3440                 print "</td>\n" .
3441                       "<td class=\"selflink\">";
3442                 if ($tag{'type'} eq "tag") {
3443                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3444                 } else {
3445                         print "&nbsp;";
3446                 }
3447                 print "</td>\n" .
3448                       "<td class=\"link\">" . " | " .
3449                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3450                 if ($tag{'reftype'} eq "commit") {
3451                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3452                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3453                 } elsif ($tag{'reftype'} eq "blob") {
3454                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3455                 }
3456                 print "</td>\n" .
3457                       "</tr>";
3458         }
3459         if (defined $extra) {
3460                 print "<tr>\n" .
3461                       "<td colspan=\"5\">$extra</td>\n" .
3462                       "</tr>\n";
3463         }
3464         print "</table>\n";
3465 }
3466
3467 sub git_heads_body {
3468         # uses global variable $project
3469         my ($headlist, $head, $from, $to, $extra) = @_;
3470         $from = 0 unless defined $from;
3471         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3472
3473         print "<table class=\"heads\" cellspacing=\"0\">\n";
3474         my $alternate = 1;
3475         for (my $i = $from; $i <= $to; $i++) {
3476                 my $entry = $headlist->[$i];
3477                 my %ref = %$entry;
3478                 my $curr = $ref{'id'} eq $head;
3479                 if ($alternate) {
3480                         print "<tr class=\"dark\">\n";
3481                 } else {
3482                         print "<tr class=\"light\">\n";
3483                 }
3484                 $alternate ^= 1;
3485                 print "<td><i>$ref{'age'}</i></td>\n" .
3486                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3487                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3488                                -class => "list name"},esc_html($ref{'name'})) .
3489                       "</td>\n" .
3490                       "<td class=\"link\">" .
3491                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3492                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3493                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3494                       "</td>\n" .
3495                       "</tr>";
3496         }
3497         if (defined $extra) {
3498                 print "<tr>\n" .
3499                       "<td colspan=\"3\">$extra</td>\n" .
3500                       "</tr>\n";
3501         }
3502         print "</table>\n";
3503 }
3504
3505 sub git_search_grep_body {
3506         my ($commitlist, $from, $to, $extra) = @_;
3507         $from = 0 unless defined $from;
3508         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3509
3510         print "<table class=\"grep\" cellspacing=\"0\">\n";
3511         my $alternate = 1;
3512         for (my $i = $from; $i <= $to; $i++) {
3513                 my %co = %{$commitlist->[$i]};
3514                 if (!%co) {
3515                         next;
3516                 }
3517                 my $commit = $co{'id'};
3518                 if ($alternate) {
3519                         print "<tr class=\"dark\">\n";
3520                 } else {
3521                         print "<tr class=\"light\">\n";
3522                 }
3523                 $alternate ^= 1;
3524                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3525                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3526                       "<td>" .
3527                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3528                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3529                 my $comment = $co{'comment'};
3530                 foreach my $line (@$comment) {
3531                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3532                                 my $lead = esc_html($1) || "";
3533                                 $lead = chop_str($lead, 30, 10);
3534                                 my $match = esc_html($2) || "";
3535                                 my $trail = esc_html($3) || "";
3536                                 $trail = chop_str($trail, 30, 10);
3537                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3538                                 print chop_str($text, 80, 5) . "<br/>\n";
3539                         }
3540                 }
3541                 print "</td>\n" .
3542                       "<td class=\"link\">" .
3543                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3544                       " | " .
3545                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3546                 print "</td>\n" .
3547                       "</tr>\n";
3548         }
3549         if (defined $extra) {
3550                 print "<tr>\n" .
3551                       "<td colspan=\"3\">$extra</td>\n" .
3552                       "</tr>\n";
3553         }
3554         print "</table>\n";
3555 }
3556
3557 ## ======================================================================
3558 ## ======================================================================
3559 ## actions
3560
3561 sub git_project_list {
3562         my $order = $cgi->param('o');
3563         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3564                 die_error(undef, "Unknown order parameter");
3565         }
3566
3567         my @list = git_get_projects_list();
3568         if (!@list) {
3569                 die_error(undef, "No projects found");
3570         }
3571
3572         git_header_html();
3573         if (-f $home_text) {
3574                 print "<div class=\"index_include\">\n";
3575                 open (my $fd, $home_text);
3576                 print <$fd>;
3577                 close $fd;
3578                 print "</div>\n";
3579         }
3580         git_project_list_body(\@list, $order);
3581         git_footer_html();
3582 }
3583
3584 sub git_forks {
3585         my $order = $cgi->param('o');
3586         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3587                 die_error(undef, "Unknown order parameter");
3588         }
3589
3590         my @list = git_get_projects_list($project);
3591         if (!@list) {
3592                 die_error(undef, "No forks found");
3593         }
3594
3595         git_header_html();
3596         git_print_page_nav('','');
3597         git_print_header_div('summary', "$project forks");
3598         git_project_list_body(\@list, $order);
3599         git_footer_html();
3600 }
3601
3602 sub git_project_index {
3603         my @projects = git_get_projects_list($project);
3604
3605         print $cgi->header(
3606                 -type => 'text/plain',
3607                 -charset => 'utf-8',
3608                 -content_disposition => 'inline; filename="index.aux"');
3609
3610         foreach my $pr (@projects) {
3611                 if (!exists $pr->{'owner'}) {
3612                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3613                 }
3614
3615                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3616                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3617                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3618                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3619                 $path  =~ s/ /\+/g;
3620                 $owner =~ s/ /\+/g;
3621
3622                 print "$path $owner\n";
3623         }
3624 }
3625
3626 sub git_summary {
3627         my $descr = git_get_project_description($project) || "none";
3628         my %co = parse_commit("HEAD");
3629         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3630         my $head = $co{'id'};
3631
3632         my $owner = git_get_project_owner($project);
3633
3634         my $refs = git_get_references();
3635         # These get_*_list functions return one more to allow us to see if
3636         # there are more ...
3637         my @taglist  = git_get_tags_list(16);
3638         my @headlist = git_get_heads_list(16);
3639         my @forklist;
3640         my ($check_forks) = gitweb_check_feature('forks');
3641
3642         if ($check_forks) {
3643                 @forklist = git_get_projects_list($project);
3644         }
3645
3646         git_header_html();
3647         git_print_page_nav('summary','', $head);
3648
3649         print "<div class=\"title\">&nbsp;</div>\n";
3650         print "<table cellspacing=\"0\">\n" .
3651               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3652               "<tr><td>owner</td><td>$owner</td></tr>\n";
3653         if (defined $cd{'rfc2822'}) {
3654                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3655         }
3656
3657         # use per project git URL list in $projectroot/$project/cloneurl
3658         # or make project git URL from git base URL and project name
3659         my $url_tag = "URL";
3660         my @url_list = git_get_project_url_list($project);
3661         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3662         foreach my $git_url (@url_list) {
3663                 next unless $git_url;
3664                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3665                 $url_tag = "";
3666         }
3667         print "</table>\n";
3668
3669         if (-s "$projectroot/$project/README.html") {
3670                 if (open my $fd, "$projectroot/$project/README.html") {
3671                         print "<div class=\"title\">readme</div>\n";
3672                         print $_ while (<$fd>);
3673                         close $fd;
3674                 }
3675         }
3676
3677         # we need to request one more than 16 (0..15) to check if
3678         # those 16 are all
3679         my @commitlist = $head ? parse_commits($head, 17) : ();
3680         if (@commitlist) {
3681                 git_print_header_div('shortlog');
3682                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3683                                   $#commitlist <=  15 ? undef :
3684                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3685         }
3686
3687         if (@taglist) {
3688                 git_print_header_div('tags');
3689                 git_tags_body(\@taglist, 0, 15,
3690                               $#taglist <=  15 ? undef :
3691                               $cgi->a({-href => href(action=>"tags")}, "..."));
3692         }
3693
3694         if (@headlist) {
3695                 git_print_header_div('heads');
3696                 git_heads_body(\@headlist, $head, 0, 15,
3697                                $#headlist <= 15 ? undef :
3698                                $cgi->a({-href => href(action=>"heads")}, "..."));
3699         }
3700
3701         if (@forklist) {
3702                 git_print_header_div('forks');
3703                 git_project_list_body(\@forklist, undef, 0, 15,
3704                                       $#forklist <= 15 ? undef :
3705                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3706                                       'noheader');
3707         }
3708
3709         git_footer_html();
3710 }
3711
3712 sub git_tag {
3713         my $head = git_get_head_hash($project);
3714         git_header_html();
3715         git_print_page_nav('','', $head,undef,$head);
3716         my %tag = parse_tag($hash);
3717
3718         if (! %tag) {
3719                 die_error(undef, "Unknown tag object");
3720         }
3721
3722         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3723         print "<div class=\"title_text\">\n" .
3724               "<table cellspacing=\"0\">\n" .
3725               "<tr>\n" .
3726               "<td>object</td>\n" .
3727               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3728                                $tag{'object'}) . "</td>\n" .
3729               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3730                                               $tag{'type'}) . "</td>\n" .
3731               "</tr>\n";
3732         if (defined($tag{'author'})) {
3733                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3734                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3735                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3736                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3737                         "</td></tr>\n";
3738         }
3739         print "</table>\n\n" .
3740               "</div>\n";
3741         print "<div class=\"page_body\">";
3742         my $comment = $tag{'comment'};
3743         foreach my $line (@$comment) {
3744                 chomp $line;
3745                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3746         }
3747         print "</div>\n";
3748         git_footer_html();
3749 }
3750
3751 sub git_blame2 {
3752         my $fd;
3753         my $ftype;
3754
3755         my ($have_blame) = gitweb_check_feature('blame');
3756         if (!$have_blame) {
3757                 die_error('403 Permission denied', "Permission denied");
3758         }
3759         die_error('404 Not Found', "File name not defined") if (!$file_name);
3760         $hash_base ||= git_get_head_hash($project);
3761         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3762         my %co = parse_commit($hash_base)
3763                 or die_error(undef, "Reading commit failed");
3764         if (!defined $hash) {
3765                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3766                         or die_error(undef, "Error looking up file");
3767         }
3768         $ftype = git_get_type($hash);
3769         if ($ftype !~ "blob") {
3770                 die_error('400 Bad Request', "Object is not a blob");
3771         }
3772         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3773               $file_name, $hash_base)
3774                 or die_error(undef, "Open git-blame failed");
3775         git_header_html();
3776         my $formats_nav =
3777                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3778                         "blob") .
3779                 " | " .
3780                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3781                         "history") .
3782                 " | " .
3783                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3784                         "HEAD");
3785         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3786         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3787         git_print_page_path($file_name, $ftype, $hash_base);
3788         my @rev_color = (qw(light2 dark2));
3789         my $num_colors = scalar(@rev_color);
3790         my $current_color = 0;
3791         my $last_rev;
3792         print <<HTML;
3793 <div class="page_body">
3794 <table class="blame">
3795 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3796 HTML
3797         my %metainfo = ();
3798         while (1) {
3799                 $_ = <$fd>;
3800                 last unless defined $_;
3801                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3802                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3803                 if (!exists $metainfo{$full_rev}) {
3804                         $metainfo{$full_rev} = {};
3805                 }
3806                 my $meta = $metainfo{$full_rev};
3807                 while (<$fd>) {
3808                         last if (s/^\t//);
3809                         if (/^(\S+) (.*)$/) {
3810                                 $meta->{$1} = $2;
3811                         }
3812                 }
3813                 my $data = $_;
3814                 chomp $data;
3815                 my $rev = substr($full_rev, 0, 8);
3816                 my $author = $meta->{'author'};
3817                 my %date = parse_date($meta->{'author-time'},
3818                                       $meta->{'author-tz'});
3819                 my $date = $date{'iso-tz'};
3820                 if ($group_size) {
3821                         $current_color = ++$current_color % $num_colors;
3822                 }
3823                 print "<tr class=\"$rev_color[$current_color]\">\n";
3824                 if ($group_size) {
3825                         print "<td class=\"sha1\"";
3826                         print " title=\"". esc_html($author) . ", $date\"";
3827                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3828                         print ">";
3829                         print $cgi->a({-href => href(action=>"commit",
3830                                                      hash=>$full_rev,
3831                                                      file_name=>$file_name)},
3832                                       esc_html($rev));
3833                         print "</td>\n";
3834                 }
3835                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3836                         or die_error(undef, "Open git-rev-parse failed");
3837                 my $parent_commit = <$dd>;
3838                 close $dd;
3839                 chomp($parent_commit);
3840                 my $blamed = href(action => 'blame',
3841                                   file_name => $meta->{'filename'},
3842                                   hash_base => $parent_commit);
3843                 print "<td class=\"linenr\">";
3844                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3845                                 -id => "l$lineno",
3846                                 -class => "linenr" },
3847                               esc_html($lineno));
3848                 print "</td>";
3849                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3850                 print "</tr>\n";
3851         }
3852         print "</table>\n";
3853         print "</div>";
3854         close $fd
3855                 or print "Reading blob failed\n";
3856         git_footer_html();
3857 }
3858
3859 sub git_blame {
3860         my $fd;
3861
3862         my ($have_blame) = gitweb_check_feature('blame');
3863         if (!$have_blame) {
3864                 die_error('403 Permission denied', "Permission denied");
3865         }
3866         die_error('404 Not Found', "File name not defined") if (!$file_name);
3867         $hash_base ||= git_get_head_hash($project);
3868         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3869         my %co = parse_commit($hash_base)
3870                 or die_error(undef, "Reading commit failed");
3871         if (!defined $hash) {
3872                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3873                         or die_error(undef, "Error lookup file");
3874         }
3875         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3876                 or die_error(undef, "Open git-annotate failed");
3877         git_header_html();
3878         my $formats_nav =
3879                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3880                         "blob") .
3881                 " | " .
3882                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3883                         "history") .
3884                 " | " .
3885                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3886                         "HEAD");
3887         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3888         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3889         git_print_page_path($file_name, 'blob', $hash_base);
3890         print "<div class=\"page_body\">\n";
3891         print <<HTML;
3892 <table class="blame">
3893   <tr>
3894     <th>Commit</th>
3895     <th>Age</th>
3896     <th>Author</th>
3897     <th>Line</th>
3898     <th>Data</th>
3899   </tr>
3900 HTML
3901         my @line_class = (qw(light dark));
3902         my $line_class_len = scalar (@line_class);
3903         my $line_class_num = $#line_class;
3904         while (my $line = <$fd>) {
3905                 my $long_rev;
3906                 my $short_rev;
3907                 my $author;
3908                 my $time;
3909                 my $lineno;
3910                 my $data;
3911                 my $age;
3912                 my $age_str;
3913                 my $age_class;
3914
3915                 chomp $line;
3916                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3917
3918                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3919                         $long_rev = $1;
3920                         $author   = $2;
3921                         $time     = $3;
3922                         $lineno   = $4;
3923                         $data     = $5;
3924                 } else {
3925                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3926                         next;
3927                 }
3928                 $short_rev  = substr ($long_rev, 0, 8);
3929                 $age        = time () - $time;
3930                 $age_str    = age_string ($age);
3931                 $age_str    =~ s/ /&nbsp;/g;
3932                 $age_class  = age_class($age);
3933                 $author     = esc_html ($author);
3934                 $author     =~ s/ /&nbsp;/g;
3935
3936                 $data = untabify($data);
3937                 $data = esc_html ($data);
3938
3939                 print <<HTML;
3940   <tr class="$line_class[$line_class_num]">
3941     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3942     <td class="$age_class">$age_str</td>
3943     <td>$author</td>
3944     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3945     <td class="pre">$data</td>
3946   </tr>
3947 HTML
3948         } # while (my $line = <$fd>)
3949         print "</table>\n\n";
3950         close $fd
3951                 or print "Reading blob failed.\n";
3952         print "</div>";
3953         git_footer_html();
3954 }
3955
3956 sub git_tags {
3957         my $head = git_get_head_hash($project);
3958         git_header_html();
3959         git_print_page_nav('','', $head,undef,$head);
3960         git_print_header_div('summary', $project);
3961
3962         my @tagslist = git_get_tags_list();
3963         if (@tagslist) {
3964                 git_tags_body(\@tagslist);
3965         }
3966         git_footer_html();
3967 }
3968
3969 sub git_heads {
3970         my $head = git_get_head_hash($project);
3971         git_header_html();
3972         git_print_page_nav('','', $head,undef,$head);
3973         git_print_header_div('summary', $project);
3974
3975         my @headslist = git_get_heads_list();
3976         if (@headslist) {
3977                 git_heads_body(\@headslist, $head);
3978         }
3979         git_footer_html();
3980 }
3981
3982 sub git_blob_plain {
3983         my $expires;
3984
3985         if (!defined $hash) {
3986                 if (defined $file_name) {
3987                         my $base = $hash_base || git_get_head_hash($project);
3988                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3989                                 or die_error(undef, "Error lookup file");
3990                 } else {
3991                         die_error(undef, "No file name defined");
3992                 }
3993         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3994                 # blobs defined by non-textual hash id's can be cached
3995                 $expires = "+1d";
3996         }
3997
3998         my $type = shift;
3999         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4000                 or die_error(undef, "Couldn't cat $file_name, $hash");
4001
4002         $type ||= blob_mimetype($fd, $file_name);
4003
4004         # save as filename, even when no $file_name is given
4005         my $save_as = "$hash";
4006         if (defined $file_name) {
4007                 $save_as = $file_name;
4008         } elsif ($type =~ m/^text\//) {
4009                 $save_as .= '.txt';
4010         }
4011
4012         print $cgi->header(
4013                 -type => "$type",
4014                 -expires=>$expires,
4015                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4016         undef $/;
4017         binmode STDOUT, ':raw';
4018         print <$fd>;
4019         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4020         $/ = "\n";
4021         close $fd;
4022 }
4023
4024 sub git_blob {
4025         my $expires;
4026
4027         if (!defined $hash) {
4028                 if (defined $file_name) {
4029                         my $base = $hash_base || git_get_head_hash($project);
4030                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4031                                 or die_error(undef, "Error lookup file");
4032                 } else {
4033                         die_error(undef, "No file name defined");
4034                 }
4035         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4036                 # blobs defined by non-textual hash id's can be cached
4037                 $expires = "+1d";
4038         }
4039
4040         my ($have_blame) = gitweb_check_feature('blame');
4041         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4042                 or die_error(undef, "Couldn't cat $file_name, $hash");
4043         my $mimetype = blob_mimetype($fd, $file_name);
4044         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4045                 close $fd;
4046                 return git_blob_plain($mimetype);
4047         }
4048         # we can have blame only for text/* mimetype
4049         $have_blame &&= ($mimetype =~ m!^text/!);
4050
4051         git_header_html(undef, $expires);
4052         my $formats_nav = '';
4053         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4054                 if (defined $file_name) {
4055                         if ($have_blame) {
4056                                 $formats_nav .=
4057                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4058                                                                hash=>$hash, file_name=>$file_name)},
4059                                                 "blame") .
4060                                         " | ";
4061                         }
4062                         $formats_nav .=
4063                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4064                                                        hash=>$hash, file_name=>$file_name)},
4065                                         "history") .
4066                                 " | " .
4067                                 $cgi->a({-href => href(action=>"blob_plain",
4068                                                        hash=>$hash, file_name=>$file_name)},
4069                                         "raw") .
4070                                 " | " .
4071                                 $cgi->a({-href => href(action=>"blob",
4072                                                        hash_base=>"HEAD", file_name=>$file_name)},
4073                                         "HEAD");
4074                 } else {
4075                         $formats_nav .=
4076                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4077                 }
4078                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4079                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4080         } else {
4081                 print "<div class=\"page_nav\">\n" .
4082                       "<br/><br/></div>\n" .
4083                       "<div class=\"title\">$hash</div>\n";
4084         }
4085         git_print_page_path($file_name, "blob", $hash_base);
4086         print "<div class=\"page_body\">\n";
4087         if ($mimetype =~ m!^text/!) {
4088                 my $nr;
4089                 while (my $line = <$fd>) {
4090                         chomp $line;
4091                         $nr++;
4092                         $line = untabify($line);
4093                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4094                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4095                 }
4096         } elsif ($mimetype =~ m!^image/!) {
4097                 print qq!<img type="$mimetype"!;
4098                 if ($file_name) {
4099                         print qq! alt="$file_name" title="$file_name"!;
4100                 }
4101                 print qq! src="! .
4102                       href(action=>"blob_plain", hash=>$hash,
4103                            hash_base=>$hash_base, file_name=>$file_name) .
4104                       qq!" />\n!;
4105         }
4106         close $fd
4107                 or print "Reading blob failed.\n";
4108         print "</div>";
4109         git_footer_html();
4110 }
4111
4112 sub git_tree {
4113         my $have_snapshot = gitweb_have_snapshot();
4114
4115         if (!defined $hash_base) {
4116                 $hash_base = "HEAD";
4117         }
4118         if (!defined $hash) {
4119                 if (defined $file_name) {
4120                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4121                 } else {
4122                         $hash = $hash_base;
4123                 }
4124         }
4125         $/ = "\0";
4126         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4127                 or die_error(undef, "Open git-ls-tree failed");
4128         my @entries = map { chomp; $_ } <$fd>;
4129         close $fd or die_error(undef, "Reading tree failed");
4130         $/ = "\n";
4131
4132         my $refs = git_get_references();
4133         my $ref = format_ref_marker($refs, $hash_base);
4134         git_header_html();
4135         my $basedir = '';
4136         my ($have_blame) = gitweb_check_feature('blame');
4137         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4138                 my @views_nav = ();
4139                 if (defined $file_name) {
4140                         push @views_nav,
4141                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4142                                                        hash=>$hash, file_name=>$file_name)},
4143                                         "history"),
4144                                 $cgi->a({-href => href(action=>"tree",
4145                                                        hash_base=>"HEAD", file_name=>$file_name)},
4146                                         "HEAD"),
4147                 }
4148                 if ($have_snapshot) {
4149                         # FIXME: Should be available when we have no hash base as well.
4150                         push @views_nav,
4151                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4152                                         "snapshot");
4153                 }
4154                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4155                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4156         } else {
4157                 undef $hash_base;
4158                 print "<div class=\"page_nav\">\n";
4159                 print "<br/><br/></div>\n";
4160                 print "<div class=\"title\">$hash</div>\n";
4161         }
4162         if (defined $file_name) {
4163                 $basedir = $file_name;
4164                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4165                         $basedir .= '/';
4166                 }
4167         }
4168         git_print_page_path($file_name, 'tree', $hash_base);
4169         print "<div class=\"page_body\">\n";
4170         print "<table cellspacing=\"0\">\n";
4171         my $alternate = 1;
4172         # '..' (top directory) link if possible
4173         if (defined $hash_base &&
4174             defined $file_name && $file_name =~ m![^/]+$!) {
4175                 if ($alternate) {
4176                         print "<tr class=\"dark\">\n";
4177                 } else {
4178                         print "<tr class=\"light\">\n";
4179                 }
4180                 $alternate ^= 1;
4181
4182                 my $up = $file_name;
4183                 $up =~ s!/?[^/]+$!!;
4184                 undef $up unless $up;
4185                 # based on git_print_tree_entry
4186                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4187                 print '<td class="list">';
4188                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4189                                              file_name=>$up)},
4190                               "..");
4191                 print "</td>\n";
4192                 print "<td class=\"link\"></td>\n";
4193
4194                 print "</tr>\n";
4195         }
4196         foreach my $line (@entries) {
4197                 my %t = parse_ls_tree_line($line, -z => 1);
4198
4199                 if ($alternate) {
4200                         print "<tr class=\"dark\">\n";
4201                 } else {
4202                         print "<tr class=\"light\">\n";
4203                 }
4204                 $alternate ^= 1;
4205
4206                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4207
4208                 print "</tr>\n";
4209         }
4210         print "</table>\n" .
4211               "</div>";
4212         git_footer_html();
4213 }
4214
4215 sub git_snapshot {
4216         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4217         my $have_snapshot = (defined $ctype && defined $suffix);
4218         if (!$have_snapshot) {
4219                 die_error('403 Permission denied', "Permission denied");
4220         }
4221
4222         if (!defined $hash) {
4223                 $hash = git_get_head_hash($project);
4224         }
4225
4226         my $git = git_cmd_str();
4227         my $name = $project;
4228         $name =~ s,([^/])/*\.git$,$1,;
4229         $name = basename($name);
4230         my $filename = to_utf8($name);
4231         $name =~ s/\047/\047\\\047\047/g;
4232         my $cmd;
4233         if ($suffix eq 'zip') {
4234                 $filename .= "-$hash.$suffix";
4235                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4236         } else {
4237                 $filename .= "-$hash.tar.$suffix";
4238                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4239         }
4240
4241         print $cgi->header(
4242                 -type => "application/$ctype",
4243                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4244                 -status => '200 OK');
4245
4246         open my $fd, "-|", $cmd
4247                 or die_error(undef, "Execute git-archive failed");
4248         binmode STDOUT, ':raw';
4249         print <$fd>;
4250         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4251         close $fd;
4252
4253 }
4254
4255 sub git_log {
4256         my $head = git_get_head_hash($project);
4257         if (!defined $hash) {
4258                 $hash = $head;
4259         }
4260         if (!defined $page) {
4261                 $page = 0;
4262         }
4263         my $refs = git_get_references();
4264
4265         my @commitlist = parse_commits($hash, 101, (100 * $page));
4266
4267         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4268
4269         git_header_html();
4270         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4271
4272         if (!@commitlist) {
4273                 my %co = parse_commit($hash);
4274
4275                 git_print_header_div('summary', $project);
4276                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4277         }
4278         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4279         for (my $i = 0; $i <= $to; $i++) {
4280                 my %co = %{$commitlist[$i]};
4281                 next if !%co;
4282                 my $commit = $co{'id'};
4283                 my $ref = format_ref_marker($refs, $commit);
4284                 my %ad = parse_date($co{'author_epoch'});
4285                 git_print_header_div('commit',
4286                                "<span class=\"age\">$co{'age_string'}</span>" .
4287                                esc_html($co{'title'}) . $ref,
4288                                $commit);
4289                 print "<div class=\"title_text\">\n" .
4290                       "<div class=\"log_link\">\n" .
4291                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4292                       " | " .
4293                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4294                       " | " .
4295                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4296                       "<br/>\n" .
4297                       "</div>\n" .
4298                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4299                       "</div>\n";
4300
4301                 print "<div class=\"log_body\">\n";
4302                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4303                 print "</div>\n";
4304         }
4305         if ($#commitlist >= 100) {
4306                 print "<div class=\"page_nav\">\n";
4307                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4308                                -accesskey => "n", -title => "Alt-n"}, "next");
4309                 print "</div>\n";
4310         }
4311         git_footer_html();
4312 }
4313
4314 sub git_commit {
4315         $hash ||= $hash_base || "HEAD";
4316         my %co = parse_commit($hash);
4317         if (!%co) {
4318                 die_error(undef, "Unknown commit object");
4319         }
4320         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4321         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4322
4323         my $parent  = $co{'parent'};
4324         my $parents = $co{'parents'}; # listref
4325
4326         # we need to prepare $formats_nav before any parameter munging
4327         my $formats_nav;
4328         if (!defined $parent) {
4329                 # --root commitdiff
4330                 $formats_nav .= '(initial)';
4331         } elsif (@$parents == 1) {
4332                 # single parent commit
4333                 $formats_nav .=
4334                         '(parent: ' .
4335                         $cgi->a({-href => href(action=>"commit",
4336                                                hash=>$parent)},
4337                                 esc_html(substr($parent, 0, 7))) .
4338                         ')';
4339         } else {
4340                 # merge commit
4341                 $formats_nav .=
4342                         '(merge: ' .
4343                         join(' ', map {
4344                                 $cgi->a({-href => href(action=>"commit",
4345                                                        hash=>$_)},
4346                                         esc_html(substr($_, 0, 7)));
4347                         } @$parents ) .
4348                         ')';
4349         }
4350
4351         if (!defined $parent) {
4352                 $parent = "--root";
4353         }
4354         my @difftree;
4355         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4356                 @diff_opts,
4357                 (@$parents <= 1 ? $parent : '-c'),
4358                 $hash, "--"
4359                 or die_error(undef, "Open git-diff-tree failed");
4360         @difftree = map { chomp; $_ } <$fd>;
4361         close $fd or die_error(undef, "Reading git-diff-tree failed");
4362
4363         # non-textual hash id's can be cached
4364         my $expires;
4365         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4366                 $expires = "+1d";
4367         }
4368         my $refs = git_get_references();
4369         my $ref = format_ref_marker($refs, $co{'id'});
4370
4371         my $have_snapshot = gitweb_have_snapshot();
4372
4373         git_header_html(undef, $expires);
4374         git_print_page_nav('commit', '',
4375                            $hash, $co{'tree'}, $hash,
4376                            $formats_nav);
4377
4378         if (defined $co{'parent'}) {
4379                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4380         } else {
4381                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4382         }
4383         print "<div class=\"title_text\">\n" .
4384               "<table cellspacing=\"0\">\n";
4385         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4386               "<tr>" .
4387               "<td></td><td> $ad{'rfc2822'}";
4388         if ($ad{'hour_local'} < 6) {
4389                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4390                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4391         } else {
4392                 printf(" (%02d:%02d %s)",
4393                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4394         }
4395         print "</td>" .
4396               "</tr>\n";
4397         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4398         print "<tr><td></td><td> $cd{'rfc2822'}" .
4399               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4400               "</td></tr>\n";
4401         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4402         print "<tr>" .
4403               "<td>tree</td>" .
4404               "<td class=\"sha1\">" .
4405               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4406                        class => "list"}, $co{'tree'}) .
4407               "</td>" .
4408               "<td class=\"link\">" .
4409               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4410                       "tree");
4411         if ($have_snapshot) {
4412                 print " | " .
4413                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4414         }
4415         print "</td>" .
4416               "</tr>\n";
4417
4418         foreach my $par (@$parents) {
4419                 print "<tr>" .
4420                       "<td>parent</td>" .
4421                       "<td class=\"sha1\">" .
4422                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4423                                class => "list"}, $par) .
4424                       "</td>" .
4425                       "<td class=\"link\">" .
4426                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4427                       " | " .
4428                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4429                       "</td>" .
4430                       "</tr>\n";
4431         }
4432         print "</table>".
4433               "</div>\n";
4434
4435         print "<div class=\"page_body\">\n";
4436         git_print_log($co{'comment'});
4437         print "</div>\n";
4438
4439         git_difftree_body(\@difftree, $hash, @$parents);
4440
4441         git_footer_html();
4442 }
4443
4444 sub git_object {
4445         # object is defined by:
4446         # - hash or hash_base alone
4447         # - hash_base and file_name
4448         my $type;
4449
4450         # - hash or hash_base alone
4451         if ($hash || ($hash_base && !defined $file_name)) {
4452                 my $object_id = $hash || $hash_base;
4453
4454                 my $git_command = git_cmd_str();
4455                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4456                         or die_error('404 Not Found', "Object does not exist");
4457                 $type = <$fd>;
4458                 chomp $type;
4459                 close $fd
4460                         or die_error('404 Not Found', "Object does not exist");
4461
4462         # - hash_base and file_name
4463         } elsif ($hash_base && defined $file_name) {
4464                 $file_name =~ s,/+$,,;
4465
4466                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4467                         or die_error('404 Not Found', "Base object does not exist");
4468
4469                 # here errors should not hapen
4470                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4471                         or die_error(undef, "Open git-ls-tree failed");
4472                 my $line = <$fd>;
4473                 close $fd;
4474
4475                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4476                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4477                         die_error('404 Not Found', "File or directory for given base does not exist");
4478                 }
4479                 $type = $2;
4480                 $hash = $3;
4481         } else {
4482                 die_error('404 Not Found', "Not enough information to find object");
4483         }
4484
4485         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4486                                           hash=>$hash, hash_base=>$hash_base,
4487                                           file_name=>$file_name),
4488                              -status => '302 Found');
4489 }
4490
4491 sub git_blobdiff {
4492         my $format = shift || 'html';
4493
4494         my $fd;
4495         my @difftree;
4496         my %diffinfo;
4497         my $expires;
4498
4499         # preparing $fd and %diffinfo for git_patchset_body
4500         # new style URI
4501         if (defined $hash_base && defined $hash_parent_base) {
4502                 if (defined $file_name) {
4503                         # read raw output
4504                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4505                                 $hash_parent_base, $hash_base,
4506                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4507                                 or die_error(undef, "Open git-diff-tree failed");
4508                         @difftree = map { chomp; $_ } <$fd>;
4509                         close $fd
4510                                 or die_error(undef, "Reading git-diff-tree failed");
4511                         @difftree
4512                                 or die_error('404 Not Found', "Blob diff not found");
4513
4514                 } elsif (defined $hash &&
4515                          $hash =~ /[0-9a-fA-F]{40}/) {
4516                         # try to find filename from $hash
4517
4518                         # read filtered raw output
4519                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4520                                 $hash_parent_base, $hash_base, "--"
4521                                 or die_error(undef, "Open git-diff-tree failed");
4522                         @difftree =
4523                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4524                                 # $hash == to_id
4525                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4526                                 map { chomp; $_ } <$fd>;
4527                         close $fd
4528                                 or die_error(undef, "Reading git-diff-tree failed");
4529                         @difftree
4530                                 or die_error('404 Not Found', "Blob diff not found");
4531
4532                 } else {
4533                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4534                 }
4535
4536                 if (@difftree > 1) {
4537                         die_error('404 Not Found', "Ambiguous blob diff specification");
4538                 }
4539
4540                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4541                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4542                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4543
4544                 $hash_parent ||= $diffinfo{'from_id'};
4545                 $hash        ||= $diffinfo{'to_id'};
4546
4547                 # non-textual hash id's can be cached
4548                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4549                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4550                         $expires = '+1d';
4551                 }
4552
4553                 # open patch output
4554                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4555                         '-p', ($format eq 'html' ? "--full-index" : ()),
4556                         $hash_parent_base, $hash_base,
4557                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4558                         or die_error(undef, "Open git-diff-tree failed");
4559         }
4560
4561         # old/legacy style URI
4562         if (!%diffinfo && # if new style URI failed
4563             defined $hash && defined $hash_parent) {
4564                 # fake git-diff-tree raw output
4565                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4566                 $diffinfo{'from_id'} = $hash_parent;
4567                 $diffinfo{'to_id'}   = $hash;
4568                 if (defined $file_name) {
4569                         if (defined $file_parent) {
4570                                 $diffinfo{'status'} = '2';
4571                                 $diffinfo{'from_file'} = $file_parent;
4572                                 $diffinfo{'to_file'}   = $file_name;
4573                         } else { # assume not renamed
4574                                 $diffinfo{'status'} = '1';
4575                                 $diffinfo{'from_file'} = $file_name;
4576                                 $diffinfo{'to_file'}   = $file_name;
4577                         }
4578                 } else { # no filename given
4579                         $diffinfo{'status'} = '2';
4580                         $diffinfo{'from_file'} = $hash_parent;
4581                         $diffinfo{'to_file'}   = $hash;
4582                 }
4583
4584                 # non-textual hash id's can be cached
4585                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4586                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4587                         $expires = '+1d';
4588                 }
4589
4590                 # open patch output
4591                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4592                         '-p', ($format eq 'html' ? "--full-index" : ()),
4593                         $hash_parent, $hash, "--"
4594                         or die_error(undef, "Open git-diff failed");
4595         } else  {
4596                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4597                         unless %diffinfo;
4598         }
4599
4600         # header
4601         if ($format eq 'html') {
4602                 my $formats_nav =
4603                         $cgi->a({-href => href(action=>"blobdiff_plain",
4604                                                hash=>$hash, hash_parent=>$hash_parent,
4605                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4606                                                file_name=>$file_name, file_parent=>$file_parent)},
4607                                 "raw");
4608                 git_header_html(undef, $expires);
4609                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4610                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4611                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4612                 } else {
4613                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4614                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4615                 }
4616                 if (defined $file_name) {
4617                         git_print_page_path($file_name, "blob", $hash_base);
4618                 } else {
4619                         print "<div class=\"page_path\"></div>\n";
4620                 }
4621
4622         } elsif ($format eq 'plain') {
4623                 print $cgi->header(
4624                         -type => 'text/plain',
4625                         -charset => 'utf-8',
4626                         -expires => $expires,
4627                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4628
4629                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4630
4631         } else {
4632                 die_error(undef, "Unknown blobdiff format");
4633         }
4634
4635         # patch
4636         if ($format eq 'html') {
4637                 print "<div class=\"page_body\">\n";
4638
4639                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4640                 close $fd;
4641
4642                 print "</div>\n"; # class="page_body"
4643                 git_footer_html();
4644
4645         } else {
4646                 while (my $line = <$fd>) {
4647                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4648                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4649
4650                         print $line;
4651
4652                         last if $line =~ m!^\+\+\+!;
4653                 }
4654                 local $/ = undef;
4655                 print <$fd>;
4656                 close $fd;
4657         }
4658 }
4659
4660 sub git_blobdiff_plain {
4661         git_blobdiff('plain');
4662 }
4663
4664 sub git_commitdiff {
4665         my $format = shift || 'html';
4666         $hash ||= $hash_base || "HEAD";
4667         my %co = parse_commit($hash);
4668         if (!%co) {
4669                 die_error(undef, "Unknown commit object");
4670         }
4671
4672         # choose format for commitdiff for merge
4673         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4674                 $hash_parent = '--cc';
4675         }
4676         # we need to prepare $formats_nav before almost any parameter munging
4677         my $formats_nav;
4678         if ($format eq 'html') {
4679                 $formats_nav =
4680                         $cgi->a({-href => href(action=>"commitdiff_plain",
4681                                                hash=>$hash, hash_parent=>$hash_parent)},
4682                                 "raw");
4683
4684                 if (defined $hash_parent &&
4685                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4686                         # commitdiff with two commits given
4687                         my $hash_parent_short = $hash_parent;
4688                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4689                                 $hash_parent_short = substr($hash_parent, 0, 7);
4690                         }
4691                         $formats_nav .=
4692                                 ' (from';
4693                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4694                                 if ($co{'parents'}[$i] eq $hash_parent) {
4695                                         $formats_nav .= ' parent ' . ($i+1);
4696                                         last;
4697                                 }
4698                         }
4699                         $formats_nav .= ': ' .
4700                                 $cgi->a({-href => href(action=>"commitdiff",
4701                                                        hash=>$hash_parent)},
4702                                         esc_html($hash_parent_short)) .
4703                                 ')';
4704                 } elsif (!$co{'parent'}) {
4705                         # --root commitdiff
4706                         $formats_nav .= ' (initial)';
4707                 } elsif (scalar @{$co{'parents'}} == 1) {
4708                         # single parent commit
4709                         $formats_nav .=
4710                                 ' (parent: ' .
4711                                 $cgi->a({-href => href(action=>"commitdiff",
4712                                                        hash=>$co{'parent'})},
4713                                         esc_html(substr($co{'parent'}, 0, 7))) .
4714                                 ')';
4715                 } else {
4716                         # merge commit
4717                         if ($hash_parent eq '--cc') {
4718                                 $formats_nav .= ' | ' .
4719                                         $cgi->a({-href => href(action=>"commitdiff",
4720                                                                hash=>$hash, hash_parent=>'-c')},
4721                                                 'combined');
4722                         } else { # $hash_parent eq '-c'
4723                                 $formats_nav .= ' | ' .
4724                                         $cgi->a({-href => href(action=>"commitdiff",
4725                                                                hash=>$hash, hash_parent=>'--cc')},
4726                                                 'compact');
4727                         }
4728                         $formats_nav .=
4729                                 ' (merge: ' .
4730                                 join(' ', map {
4731                                         $cgi->a({-href => href(action=>"commitdiff",
4732                                                                hash=>$_)},
4733                                                 esc_html(substr($_, 0, 7)));
4734                                 } @{$co{'parents'}} ) .
4735                                 ')';
4736                 }
4737         }
4738
4739         my $hash_parent_param = $hash_parent;
4740         if (!defined $hash_parent_param) {
4741                 # --cc for multiple parents, --root for parentless
4742                 $hash_parent_param =
4743                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4744         }
4745
4746         # read commitdiff
4747         my $fd;
4748         my @difftree;
4749         if ($format eq 'html') {
4750                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4751                         "--no-commit-id", "--patch-with-raw", "--full-index",
4752                         $hash_parent_param, $hash, "--"
4753                         or die_error(undef, "Open git-diff-tree failed");
4754
4755                 while (my $line = <$fd>) {
4756                         chomp $line;
4757                         # empty line ends raw part of diff-tree output
4758                         last unless $line;
4759                         push @difftree, scalar parse_difftree_raw_line($line);
4760                 }
4761
4762         } elsif ($format eq 'plain') {
4763                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4764                         '-p', $hash_parent_param, $hash, "--"
4765                         or die_error(undef, "Open git-diff-tree failed");
4766
4767         } else {
4768                 die_error(undef, "Unknown commitdiff format");
4769         }
4770
4771         # non-textual hash id's can be cached
4772         my $expires;
4773         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4774                 $expires = "+1d";
4775         }
4776
4777         # write commit message
4778         if ($format eq 'html') {
4779                 my $refs = git_get_references();
4780                 my $ref = format_ref_marker($refs, $co{'id'});
4781
4782                 git_header_html(undef, $expires);
4783                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4784                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4785                 git_print_authorship(\%co);
4786                 print "<div class=\"page_body\">\n";
4787                 if (@{$co{'comment'}} > 1) {
4788                         print "<div class=\"log\">\n";
4789                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4790                         print "</div>\n"; # class="log"
4791                 }
4792
4793         } elsif ($format eq 'plain') {
4794                 my $refs = git_get_references("tags");
4795                 my $tagname = git_get_rev_name_tags($hash);
4796                 my $filename = basename($project) . "-$hash.patch";
4797
4798                 print $cgi->header(
4799                         -type => 'text/plain',
4800                         -charset => 'utf-8',
4801                         -expires => $expires,
4802                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4803                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4804                 print <<TEXT;
4805 From: $co{'author'}
4806 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4807 Subject: $co{'title'}
4808 TEXT
4809                 print "X-Git-Tag: $tagname\n" if $tagname;
4810                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4811
4812                 foreach my $line (@{$co{'comment'}}) {
4813                         print "$line\n";
4814                 }
4815                 print "---\n\n";
4816         }
4817
4818         # write patch
4819         if ($format eq 'html') {
4820                 my $use_parents = !defined $hash_parent ||
4821                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4822                 git_difftree_body(\@difftree, $hash,
4823                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4824                 print "<br/>\n";
4825
4826                 git_patchset_body($fd, \@difftree, $hash,
4827                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4828                 close $fd;
4829                 print "</div>\n"; # class="page_body"
4830                 git_footer_html();
4831
4832         } elsif ($format eq 'plain') {
4833                 local $/ = undef;
4834                 print <$fd>;
4835                 close $fd
4836                         or print "Reading git-diff-tree failed\n";
4837         }
4838 }
4839
4840 sub git_commitdiff_plain {
4841         git_commitdiff('plain');
4842 }
4843
4844 sub git_history {
4845         if (!defined $hash_base) {
4846                 $hash_base = git_get_head_hash($project);
4847         }
4848         if (!defined $page) {
4849                 $page = 0;
4850         }
4851         my $ftype;
4852         my %co = parse_commit($hash_base);
4853         if (!%co) {
4854                 die_error(undef, "Unknown commit object");
4855         }
4856
4857         my $refs = git_get_references();
4858         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4859
4860         if (!defined $hash && defined $file_name) {
4861                 $hash = git_get_hash_by_path($hash_base, $file_name);
4862         }
4863         if (defined $hash) {
4864                 $ftype = git_get_type($hash);
4865         }
4866
4867         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4868
4869         my $paging_nav = '';
4870         if ($page > 0) {
4871                 $paging_nav .=
4872                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4873                                                file_name=>$file_name)},
4874                                 "first");
4875                 $paging_nav .= " &sdot; " .
4876                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4877                                                file_name=>$file_name, page=>$page-1),
4878                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4879         } else {
4880                 $paging_nav .= "first";
4881                 $paging_nav .= " &sdot; prev";
4882         }
4883         if ($#commitlist >= 100) {
4884                 $paging_nav .= " &sdot; " .
4885                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4886                                                file_name=>$file_name, page=>$page+1),
4887                                  -accesskey => "n", -title => "Alt-n"}, "next");
4888         } else {
4889                 $paging_nav .= " &sdot; next";
4890         }
4891         my $next_link = '';
4892         if ($#commitlist >= 100) {
4893                 $next_link =
4894                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4895                                                file_name=>$file_name, page=>$page+1),
4896                                  -accesskey => "n", -title => "Alt-n"}, "next");
4897         }
4898
4899         git_header_html();
4900         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4901         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4902         git_print_page_path($file_name, $ftype, $hash_base);
4903
4904         git_history_body(\@commitlist, 0, 99,
4905                          $refs, $hash_base, $ftype, $next_link);
4906
4907         git_footer_html();
4908 }
4909
4910 sub git_search {
4911         my ($have_search) = gitweb_check_feature('search');
4912         if (!$have_search) {
4913                 die_error('403 Permission denied', "Permission denied");
4914         }
4915         if (!defined $searchtext) {
4916                 die_error(undef, "Text field empty");
4917         }
4918         if (!defined $hash) {
4919                 $hash = git_get_head_hash($project);
4920         }
4921         my %co = parse_commit($hash);
4922         if (!%co) {
4923                 die_error(undef, "Unknown commit object");
4924         }
4925         if (!defined $page) {
4926                 $page = 0;
4927         }
4928
4929         $searchtype ||= 'commit';
4930         if ($searchtype eq 'pickaxe') {
4931                 # pickaxe may take all resources of your box and run for several minutes
4932                 # with every query - so decide by yourself how public you make this feature
4933                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4934                 if (!$have_pickaxe) {
4935                         die_error('403 Permission denied', "Permission denied");
4936                 }
4937         }
4938         if ($searchtype eq 'grep') {
4939                 my ($have_grep) = gitweb_check_feature('grep');
4940                 if (!$have_grep) {
4941                         die_error('403 Permission denied', "Permission denied");
4942                 }
4943         }
4944
4945         git_header_html();
4946
4947         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4948                 my $greptype;
4949                 if ($searchtype eq 'commit') {
4950                         $greptype = "--grep=";
4951                 } elsif ($searchtype eq 'author') {
4952                         $greptype = "--author=";
4953                 } elsif ($searchtype eq 'committer') {
4954                         $greptype = "--committer=";
4955                 }
4956                 $greptype .= $search_regexp;
4957                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4958
4959                 my $paging_nav = '';
4960                 if ($page > 0) {
4961                         $paging_nav .=
4962                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4963                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4964                                         "first");
4965                         $paging_nav .= " &sdot; " .
4966                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4967                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4968                                                        page=>$page-1),
4969                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4970                 } else {
4971                         $paging_nav .= "first";
4972                         $paging_nav .= " &sdot; prev";
4973                 }
4974                 if ($#commitlist >= 100) {
4975                         $paging_nav .= " &sdot; " .
4976                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4977                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4978                                                        page=>$page+1),
4979                                          -accesskey => "n", -title => "Alt-n"}, "next");
4980                 } else {
4981                         $paging_nav .= " &sdot; next";
4982                 }
4983                 my $next_link = '';
4984                 if ($#commitlist >= 100) {
4985                         $next_link =
4986                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4987                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4988                                                        page=>$page+1),
4989                                          -accesskey => "n", -title => "Alt-n"}, "next");
4990                 }
4991
4992                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4993                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4994                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4995         }
4996
4997         if ($searchtype eq 'pickaxe') {
4998                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4999                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5000
5001                 print "<table cellspacing=\"0\">\n";
5002                 my $alternate = 1;
5003                 $/ = "\n";
5004                 my $git_command = git_cmd_str();
5005                 my $searchqtext = $searchtext;
5006                 $searchqtext =~ s/'/'\\''/;
5007                 open my $fd, "-|", "$git_command rev-list $hash | " .
5008                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5009                 undef %co;
5010                 my @files;
5011                 while (my $line = <$fd>) {
5012                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5013                                 my %set;
5014                                 $set{'file'} = $6;
5015                                 $set{'from_id'} = $3;
5016                                 $set{'to_id'} = $4;
5017                                 $set{'id'} = $set{'to_id'};
5018                                 if ($set{'id'} =~ m/0{40}/) {
5019                                         $set{'id'} = $set{'from_id'};
5020                                 }
5021                                 if ($set{'id'} =~ m/0{40}/) {
5022                                         next;
5023                                 }
5024                                 push @files, \%set;
5025                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5026                                 if (%co) {
5027                                         if ($alternate) {
5028                                                 print "<tr class=\"dark\">\n";
5029                                         } else {
5030                                                 print "<tr class=\"light\">\n";
5031                                         }
5032                                         $alternate ^= 1;
5033                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5034                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5035                                               "<td>" .
5036                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5037                                                       -class => "list subject"},
5038                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5039                                         while (my $setref = shift @files) {
5040                                                 my %set = %$setref;
5041                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5042                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5043                                                               -class => "list"},
5044                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5045                                                       "<br/>\n";
5046                                         }
5047                                         print "</td>\n" .
5048                                               "<td class=\"link\">" .
5049                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5050                                               " | " .
5051                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5052                                         print "</td>\n" .
5053                                               "</tr>\n";
5054                                 }
5055                                 %co = parse_commit($1);
5056                         }
5057                 }
5058                 close $fd;
5059
5060                 print "</table>\n";
5061         }
5062
5063         if ($searchtype eq 'grep') {
5064                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5065                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5066
5067                 print "<table cellspacing=\"0\">\n";
5068                 my $alternate = 1;
5069                 my $matches = 0;
5070                 $/ = "\n";
5071                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5072                 my $lastfile = '';
5073                 while (my $line = <$fd>) {
5074                         chomp $line;
5075                         my ($file, $lno, $ltext, $binary);
5076                         last if ($matches++ > 1000);
5077                         if ($line =~ /^Binary file (.+) matches$/) {
5078                                 $file = $1;
5079                                 $binary = 1;
5080                         } else {
5081                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5082                         }
5083                         if ($file ne $lastfile) {
5084                                 $lastfile and print "</td></tr>\n";
5085                                 if ($alternate++) {
5086                                         print "<tr class=\"dark\">\n";
5087                                 } else {
5088                                         print "<tr class=\"light\">\n";
5089                                 }
5090                                 print "<td class=\"list\">".
5091                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5092                                                                file_name=>"$file"),
5093                                                 -class => "list"}, esc_path($file));
5094                                 print "</td><td>\n";
5095                                 $lastfile = $file;
5096                         }
5097                         if ($binary) {
5098                                 print "<div class=\"binary\">Binary file</div>\n";
5099                         } else {
5100                                 $ltext = untabify($ltext);
5101                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5102                                         $ltext = esc_html($1, -nbsp=>1);
5103                                         $ltext .= '<span class="match">';
5104                                         $ltext .= esc_html($2, -nbsp=>1);
5105                                         $ltext .= '</span>';
5106                                         $ltext .= esc_html($3, -nbsp=>1);
5107                                 } else {
5108                                         $ltext = esc_html($ltext, -nbsp=>1);
5109                                 }
5110                                 print "<div class=\"pre\">" .
5111                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5112                                                                file_name=>"$file").'#l'.$lno,
5113                                                 -class => "linenr"}, sprintf('%4i', $lno))
5114                                         . ' ' .  $ltext . "</div>\n";
5115                         }
5116                 }
5117                 if ($lastfile) {
5118                         print "</td></tr>\n";
5119                         if ($matches > 1000) {
5120                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5121                         }
5122                 } else {
5123                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5124                 }
5125                 close $fd;
5126
5127                 print "</table>\n";
5128         }
5129         git_footer_html();
5130 }
5131
5132 sub git_search_help {
5133         git_header_html();
5134         git_print_page_nav('','', $hash,$hash,$hash);
5135         print <<EOT;
5136 <dl>
5137 <dt><b>commit</b></dt>
5138 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5139 EOT
5140         my ($have_grep) = gitweb_check_feature('grep');
5141         if ($have_grep) {
5142                 print <<EOT;
5143 <dt><b>grep</b></dt>
5144 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5145     a different one) are searched for the given
5146 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5147 (POSIX extended) and the matches are listed. On large
5148 trees, this search can take a while and put some strain on the server, so please use it with
5149 some consideration.</dd>
5150 EOT
5151         }
5152         print <<EOT;
5153 <dt><b>author</b></dt>
5154 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5155 <dt><b>committer</b></dt>
5156 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5157 EOT
5158         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5159         if ($have_pickaxe) {
5160                 print <<EOT;
5161 <dt><b>pickaxe</b></dt>
5162 <dd>All commits that caused the string to appear or disappear from any file (changes that
5163 added, removed or "modified" the string) will be listed. This search can take a while and
5164 takes a lot of strain on the server, so please use it wisely.</dd>
5165 EOT
5166         }
5167         print "</dl>\n";
5168         git_footer_html();
5169 }
5170
5171 sub git_shortlog {
5172         my $head = git_get_head_hash($project);
5173         if (!defined $hash) {
5174                 $hash = $head;
5175         }
5176         if (!defined $page) {
5177                 $page = 0;
5178         }
5179         my $refs = git_get_references();
5180
5181         my @commitlist = parse_commits($hash, 101, (100 * $page));
5182
5183         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5184         my $next_link = '';
5185         if ($#commitlist >= 100) {
5186                 $next_link =
5187                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5188                                  -accesskey => "n", -title => "Alt-n"}, "next");
5189         }
5190
5191         git_header_html();
5192         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5193         git_print_header_div('summary', $project);
5194
5195         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5196
5197         git_footer_html();
5198 }
5199
5200 ## ......................................................................
5201 ## feeds (RSS, Atom; OPML)
5202
5203 sub git_feed {
5204         my $format = shift || 'atom';
5205         my ($have_blame) = gitweb_check_feature('blame');
5206
5207         # Atom: http://www.atomenabled.org/developers/syndication/
5208         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5209         if ($format ne 'rss' && $format ne 'atom') {
5210                 die_error(undef, "Unknown web feed format");
5211         }
5212
5213         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5214         my $head = $hash || 'HEAD';
5215         my @commitlist = parse_commits($head, 150);
5216
5217         my %latest_commit;
5218         my %latest_date;
5219         my $content_type = "application/$format+xml";
5220         if (defined $cgi->http('HTTP_ACCEPT') &&
5221                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5222                 # browser (feed reader) prefers text/xml
5223                 $content_type = 'text/xml';
5224         }
5225         if (defined($commitlist[0])) {
5226                 %latest_commit = %{$commitlist[0]};
5227                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5228                 print $cgi->header(
5229                         -type => $content_type,
5230                         -charset => 'utf-8',
5231                         -last_modified => $latest_date{'rfc2822'});
5232         } else {
5233                 print $cgi->header(
5234                         -type => $content_type,
5235                         -charset => 'utf-8');
5236         }
5237
5238         # Optimization: skip generating the body if client asks only
5239         # for Last-Modified date.
5240         return if ($cgi->request_method() eq 'HEAD');
5241
5242         # header variables
5243         my $title = "$site_name - $project/$action";
5244         my $feed_type = 'log';
5245         if (defined $hash) {
5246                 $title .= " - '$hash'";
5247                 $feed_type = 'branch log';
5248                 if (defined $file_name) {
5249                         $title .= " :: $file_name";
5250                         $feed_type = 'history';
5251                 }
5252         } elsif (defined $file_name) {
5253                 $title .= " - $file_name";
5254                 $feed_type = 'history';
5255         }
5256         $title .= " $feed_type";
5257         my $descr = git_get_project_description($project);
5258         if (defined $descr) {
5259                 $descr = esc_html($descr);
5260         } else {
5261                 $descr = "$project " .
5262                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5263                          " feed";
5264         }
5265         my $owner = git_get_project_owner($project);
5266         $owner = esc_html($owner);
5267
5268         #header
5269         my $alt_url;
5270         if (defined $file_name) {
5271                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5272         } elsif (defined $hash) {
5273                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5274         } else {
5275                 $alt_url = href(-full=>1, action=>"summary");
5276         }
5277         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5278         if ($format eq 'rss') {
5279                 print <<XML;
5280 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5281 <channel>
5282 XML
5283                 print "<title>$title</title>\n" .
5284                       "<link>$alt_url</link>\n" .
5285                       "<description>$descr</description>\n" .
5286                       "<language>en</language>\n";
5287         } elsif ($format eq 'atom') {
5288                 print <<XML;
5289 <feed xmlns="http://www.w3.org/2005/Atom">
5290 XML
5291                 print "<title>$title</title>\n" .
5292                       "<subtitle>$descr</subtitle>\n" .
5293                       '<link rel="alternate" type="text/html" href="' .
5294                       $alt_url . '" />' . "\n" .
5295                       '<link rel="self" type="' . $content_type . '" href="' .
5296                       $cgi->self_url() . '" />' . "\n" .
5297                       "<id>" . href(-full=>1) . "</id>\n" .
5298                       # use project owner for feed author
5299                       "<author><name>$owner</name></author>\n";
5300                 if (defined $favicon) {
5301                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5302                 }
5303                 if (defined $logo_url) {
5304                         # not twice as wide as tall: 72 x 27 pixels
5305                         print "<logo>" . esc_url($logo) . "</logo>\n";
5306                 }
5307                 if (! %latest_date) {
5308                         # dummy date to keep the feed valid until commits trickle in:
5309                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5310                 } else {
5311                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5312                 }
5313         }
5314
5315         # contents
5316         for (my $i = 0; $i <= $#commitlist; $i++) {
5317                 my %co = %{$commitlist[$i]};
5318                 my $commit = $co{'id'};
5319                 # we read 150, we always show 30 and the ones more recent than 48 hours
5320                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5321                         last;
5322                 }
5323                 my %cd = parse_date($co{'author_epoch'});
5324
5325                 # get list of changed files
5326                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5327                         $co{'parent'} || "--root",
5328                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5329                         or next;
5330                 my @difftree = map { chomp; $_ } <$fd>;
5331                 close $fd
5332                         or next;
5333
5334                 # print element (entry, item)
5335                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5336                 if ($format eq 'rss') {
5337                         print "<item>\n" .
5338                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5339                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5340                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5341                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5342                               "<link>$co_url</link>\n" .
5343                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5344                               "<content:encoded>" .
5345                               "<![CDATA[\n";
5346                 } elsif ($format eq 'atom') {
5347                         print "<entry>\n" .
5348                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5349                               "<updated>$cd{'iso-8601'}</updated>\n" .
5350                               "<author>\n" .
5351                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5352                         if ($co{'author_email'}) {
5353                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5354                         }
5355                         print "</author>\n" .
5356                               # use committer for contributor
5357                               "<contributor>\n" .
5358                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5359                         if ($co{'committer_email'}) {
5360                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5361                         }
5362                         print "</contributor>\n" .
5363                               "<published>$cd{'iso-8601'}</published>\n" .
5364                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5365                               "<id>$co_url</id>\n" .
5366                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5367                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5368                 }
5369                 my $comment = $co{'comment'};
5370                 print "<pre>\n";
5371                 foreach my $line (@$comment) {
5372                         $line = esc_html($line);
5373                         print "$line\n";
5374                 }
5375                 print "</pre><ul>\n";
5376                 foreach my $difftree_line (@difftree) {
5377                         my %difftree = parse_difftree_raw_line($difftree_line);
5378                         next if !$difftree{'from_id'};
5379
5380                         my $file = $difftree{'file'} || $difftree{'to_file'};
5381
5382                         print "<li>" .
5383                               "[" .
5384                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5385                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5386                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5387                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5388                                       -title => "diff"}, 'D');
5389                         if ($have_blame) {
5390                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5391                                                              file_name=>$file, hash_base=>$commit),
5392                                               -title => "blame"}, 'B');
5393                         }
5394                         # if this is not a feed of a file history
5395                         if (!defined $file_name || $file_name ne $file) {
5396                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5397                                                              file_name=>$file, hash=>$commit),
5398                                               -title => "history"}, 'H');
5399                         }
5400                         $file = esc_path($file);
5401                         print "] ".
5402                               "$file</li>\n";
5403                 }
5404                 if ($format eq 'rss') {
5405                         print "</ul>]]>\n" .
5406                               "</content:encoded>\n" .
5407                               "</item>\n";
5408                 } elsif ($format eq 'atom') {
5409                         print "</ul>\n</div>\n" .
5410                               "</content>\n" .
5411                               "</entry>\n";
5412                 }
5413         }
5414
5415         # end of feed
5416         if ($format eq 'rss') {
5417                 print "</channel>\n</rss>\n";
5418         }       elsif ($format eq 'atom') {
5419                 print "</feed>\n";
5420         }
5421 }
5422
5423 sub git_rss {
5424         git_feed('rss');
5425 }
5426
5427 sub git_atom {
5428         git_feed('atom');
5429 }
5430
5431 sub git_opml {
5432         my @list = git_get_projects_list();
5433
5434         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5435         print <<XML;
5436 <?xml version="1.0" encoding="utf-8"?>
5437 <opml version="1.0">
5438 <head>
5439   <title>$site_name OPML Export</title>
5440 </head>
5441 <body>
5442 <outline text="git RSS feeds">
5443 XML
5444
5445         foreach my $pr (@list) {
5446                 my %proj = %$pr;
5447                 my $head = git_get_head_hash($proj{'path'});
5448                 if (!defined $head) {
5449                         next;
5450                 }
5451                 $git_dir = "$projectroot/$proj{'path'}";
5452                 my %co = parse_commit($head);
5453                 if (!%co) {
5454                         next;
5455                 }
5456
5457                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5458                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5459                 my $html = "$my_url?p=$proj{'path'};a=summary";
5460                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5461         }
5462         print <<XML;
5463 </outline>
5464 </body>
5465 </opml>
5466 XML
5467 }