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