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 our $gitweb_project_owner = undef;
1470 sub git_get_project_list_from_file {
1471
1472         return if (defined $gitweb_project_owner);
1473
1474         $gitweb_project_owner = {};
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                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1487                 }
1488                 close $fd;
1489         }
1490 }
1491
1492 sub git_get_project_owner {
1493         my $project = shift;
1494         my $owner;
1495
1496         return undef unless $project;
1497
1498         if (!defined $gitweb_project_owner) {
1499                 git_get_project_list_from_file();
1500         }
1501
1502         if (exists $gitweb_project_owner->{$project}) {
1503                 $owner = $gitweb_project_owner->{$project};
1504         }
1505         if (!defined $owner) {
1506                 $owner = get_file_owner("$projectroot/$project");
1507         }
1508
1509         return $owner;
1510 }
1511
1512 sub git_get_last_activity {
1513         my ($path) = @_;
1514         my $fd;
1515
1516         $git_dir = "$projectroot/$path";
1517         open($fd, "-|", git_cmd(), 'for-each-ref',
1518              '--format=%(committer)',
1519              '--sort=-committerdate',
1520              '--count=1',
1521              'refs/heads') or return;
1522         my $most_recent = <$fd>;
1523         close $fd or return;
1524         if (defined $most_recent &&
1525             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1526                 my $timestamp = $1;
1527                 my $age = time - $timestamp;
1528                 return ($age, age_string($age));
1529         }
1530 }
1531
1532 sub git_get_references {
1533         my $type = shift || "";
1534         my %refs;
1535         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1536         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1537         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1538                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1539                 or return;
1540
1541         while (my $line = <$fd>) {
1542                 chomp $line;
1543                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1544                         if (defined $refs{$1}) {
1545                                 push @{$refs{$1}}, $2;
1546                         } else {
1547                                 $refs{$1} = [ $2 ];
1548                         }
1549                 }
1550         }
1551         close $fd or return;
1552         return \%refs;
1553 }
1554
1555 sub git_get_rev_name_tags {
1556         my $hash = shift || return undef;
1557
1558         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1559                 or return;
1560         my $name_rev = <$fd>;
1561         close $fd;
1562
1563         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1564                 return $1;
1565         } else {
1566                 # catches also '$hash undefined' output
1567                 return undef;
1568         }
1569 }
1570
1571 ## ----------------------------------------------------------------------
1572 ## parse to hash functions
1573
1574 sub parse_date {
1575         my $epoch = shift;
1576         my $tz = shift || "-0000";
1577
1578         my %date;
1579         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1580         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1581         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1582         $date{'hour'} = $hour;
1583         $date{'minute'} = $min;
1584         $date{'mday'} = $mday;
1585         $date{'day'} = $days[$wday];
1586         $date{'month'} = $months[$mon];
1587         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1588                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1589         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1590                              $mday, $months[$mon], $hour ,$min;
1591         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1592                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1593
1594         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1595         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1596         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1597         $date{'hour_local'} = $hour;
1598         $date{'minute_local'} = $min;
1599         $date{'tz_local'} = $tz;
1600         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1601                                   1900+$year, $mon+1, $mday,
1602                                   $hour, $min, $sec, $tz);
1603         return %date;
1604 }
1605
1606 sub parse_tag {
1607         my $tag_id = shift;
1608         my %tag;
1609         my @comment;
1610
1611         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1612         $tag{'id'} = $tag_id;
1613         while (my $line = <$fd>) {
1614                 chomp $line;
1615                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1616                         $tag{'object'} = $1;
1617                 } elsif ($line =~ m/^type (.+)$/) {
1618                         $tag{'type'} = $1;
1619                 } elsif ($line =~ m/^tag (.+)$/) {
1620                         $tag{'name'} = $1;
1621                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1622                         $tag{'author'} = $1;
1623                         $tag{'epoch'} = $2;
1624                         $tag{'tz'} = $3;
1625                 } elsif ($line =~ m/--BEGIN/) {
1626                         push @comment, $line;
1627                         last;
1628                 } elsif ($line eq "") {
1629                         last;
1630                 }
1631         }
1632         push @comment, <$fd>;
1633         $tag{'comment'} = \@comment;
1634         close $fd or return;
1635         if (!defined $tag{'name'}) {
1636                 return
1637         };
1638         return %tag
1639 }
1640
1641 sub parse_commit_text {
1642         my ($commit_text, $withparents) = @_;
1643         my @commit_lines = split '\n', $commit_text;
1644         my %co;
1645
1646         pop @commit_lines; # Remove '\0'
1647
1648         if (! @commit_lines) {
1649                 return;
1650         }
1651
1652         my $header = shift @commit_lines;
1653         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1654                 return;
1655         }
1656         ($co{'id'}, my @parents) = split ' ', $header;
1657         while (my $line = shift @commit_lines) {
1658                 last if $line eq "\n";
1659                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1660                         $co{'tree'} = $1;
1661                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1662                         push @parents, $1;
1663                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1664                         $co{'author'} = $1;
1665                         $co{'author_epoch'} = $2;
1666                         $co{'author_tz'} = $3;
1667                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1668                                 $co{'author_name'}  = $1;
1669                                 $co{'author_email'} = $2;
1670                         } else {
1671                                 $co{'author_name'} = $co{'author'};
1672                         }
1673                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1674                         $co{'committer'} = $1;
1675                         $co{'committer_epoch'} = $2;
1676                         $co{'committer_tz'} = $3;
1677                         $co{'committer_name'} = $co{'committer'};
1678                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1679                                 $co{'committer_name'}  = $1;
1680                                 $co{'committer_email'} = $2;
1681                         } else {
1682                                 $co{'committer_name'} = $co{'committer'};
1683                         }
1684                 }
1685         }
1686         if (!defined $co{'tree'}) {
1687                 return;
1688         };
1689         $co{'parents'} = \@parents;
1690         $co{'parent'} = $parents[0];
1691
1692         foreach my $title (@commit_lines) {
1693                 $title =~ s/^    //;
1694                 if ($title ne "") {
1695                         $co{'title'} = chop_str($title, 80, 5);
1696                         # remove leading stuff of merges to make the interesting part visible
1697                         if (length($title) > 50) {
1698                                 $title =~ s/^Automatic //;
1699                                 $title =~ s/^merge (of|with) /Merge ... /i;
1700                                 if (length($title) > 50) {
1701                                         $title =~ s/(http|rsync):\/\///;
1702                                 }
1703                                 if (length($title) > 50) {
1704                                         $title =~ s/(master|www|rsync)\.//;
1705                                 }
1706                                 if (length($title) > 50) {
1707                                         $title =~ s/kernel.org:?//;
1708                                 }
1709                                 if (length($title) > 50) {
1710                                         $title =~ s/\/pub\/scm//;
1711                                 }
1712                         }
1713                         $co{'title_short'} = chop_str($title, 50, 5);
1714                         last;
1715                 }
1716         }
1717         if ($co{'title'} eq "") {
1718                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1719         }
1720         # remove added spaces
1721         foreach my $line (@commit_lines) {
1722                 $line =~ s/^    //;
1723         }
1724         $co{'comment'} = \@commit_lines;
1725
1726         my $age = time - $co{'committer_epoch'};
1727         $co{'age'} = $age;
1728         $co{'age_string'} = age_string($age);
1729         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1730         if ($age > 60*60*24*7*2) {
1731                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1732                 $co{'age_string_age'} = $co{'age_string'};
1733         } else {
1734                 $co{'age_string_date'} = $co{'age_string'};
1735                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1736         }
1737         return %co;
1738 }
1739
1740 sub parse_commit {
1741         my ($commit_id) = @_;
1742         my %co;
1743
1744         local $/ = "\0";
1745
1746         open my $fd, "-|", git_cmd(), "rev-list",
1747                 "--parents",
1748                 "--header",
1749                 "--max-count=1",
1750                 $commit_id,
1751                 "--",
1752                 or die_error(undef, "Open git-rev-list failed");
1753         %co = parse_commit_text(<$fd>, 1);
1754         close $fd;
1755
1756         return %co;
1757 }
1758
1759 sub parse_commits {
1760         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1761         my @cos;
1762
1763         $maxcount ||= 1;
1764         $skip ||= 0;
1765
1766         local $/ = "\0";
1767
1768         open my $fd, "-|", git_cmd(), "rev-list",
1769                 "--header",
1770                 ($arg ? ($arg) : ()),
1771                 ("--max-count=" . $maxcount),
1772                 ("--skip=" . $skip),
1773                 $commit_id,
1774                 "--",
1775                 ($filename ? ($filename) : ())
1776                 or die_error(undef, "Open git-rev-list failed");
1777         while (my $line = <$fd>) {
1778                 my %co = parse_commit_text($line);
1779                 push @cos, \%co;
1780         }
1781         close $fd;
1782
1783         return wantarray ? @cos : \@cos;
1784 }
1785
1786 # parse ref from ref_file, given by ref_id, with given type
1787 sub parse_ref {
1788         my $ref_file = shift;
1789         my $ref_id = shift;
1790         my $type = shift || git_get_type($ref_id);
1791         my %ref_item;
1792
1793         $ref_item{'type'} = $type;
1794         $ref_item{'id'} = $ref_id;
1795         $ref_item{'epoch'} = 0;
1796         $ref_item{'age'} = "unknown";
1797         if ($type eq "tag") {
1798                 my %tag = parse_tag($ref_id);
1799                 $ref_item{'comment'} = $tag{'comment'};
1800                 if ($tag{'type'} eq "commit") {
1801                         my %co = parse_commit($tag{'object'});
1802                         $ref_item{'epoch'} = $co{'committer_epoch'};
1803                         $ref_item{'age'} = $co{'age_string'};
1804                 } elsif (defined($tag{'epoch'})) {
1805                         my $age = time - $tag{'epoch'};
1806                         $ref_item{'epoch'} = $tag{'epoch'};
1807                         $ref_item{'age'} = age_string($age);
1808                 }
1809                 $ref_item{'reftype'} = $tag{'type'};
1810                 $ref_item{'name'} = $tag{'name'};
1811                 $ref_item{'refid'} = $tag{'object'};
1812         } elsif ($type eq "commit"){
1813                 my %co = parse_commit($ref_id);
1814                 $ref_item{'reftype'} = "commit";
1815                 $ref_item{'name'} = $ref_file;
1816                 $ref_item{'title'} = $co{'title'};
1817                 $ref_item{'refid'} = $ref_id;
1818                 $ref_item{'epoch'} = $co{'committer_epoch'};
1819                 $ref_item{'age'} = $co{'age_string'};
1820         } else {
1821                 $ref_item{'reftype'} = $type;
1822                 $ref_item{'name'} = $ref_file;
1823                 $ref_item{'refid'} = $ref_id;
1824         }
1825
1826         return %ref_item;
1827 }
1828
1829 # parse line of git-diff-tree "raw" output
1830 sub parse_difftree_raw_line {
1831         my $line = shift;
1832         my %res;
1833
1834         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1835         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1836         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1837                 $res{'from_mode'} = $1;
1838                 $res{'to_mode'} = $2;
1839                 $res{'from_id'} = $3;
1840                 $res{'to_id'} = $4;
1841                 $res{'status'} = $5;
1842                 $res{'similarity'} = $6;
1843                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1844                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1845                 } else {
1846                         $res{'file'} = unquote($7);
1847                 }
1848         }
1849         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1850         # combined diff (for merge commit)
1851         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1852                 $res{'nparents'}  = length($1);
1853                 $res{'from_mode'} = [ split(' ', $2) ];
1854                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1855                 $res{'from_id'} = [ split(' ', $3) ];
1856                 $res{'to_id'} = pop @{$res{'from_id'}};
1857                 $res{'status'} = [ split('', $4) ];
1858                 $res{'to_file'} = unquote($5);
1859         }
1860         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1861         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1862                 $res{'commit'} = $1;
1863         }
1864
1865         return wantarray ? %res : \%res;
1866 }
1867
1868 # parse line of git-ls-tree output
1869 sub parse_ls_tree_line ($;%) {
1870         my $line = shift;
1871         my %opts = @_;
1872         my %res;
1873
1874         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1875         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1876
1877         $res{'mode'} = $1;
1878         $res{'type'} = $2;
1879         $res{'hash'} = $3;
1880         if ($opts{'-z'}) {
1881                 $res{'name'} = $4;
1882         } else {
1883                 $res{'name'} = unquote($4);
1884         }
1885
1886         return wantarray ? %res : \%res;
1887 }
1888
1889 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1890 sub parse_from_to_diffinfo {
1891         my ($diffinfo, $from, $to, @parents) = @_;
1892
1893         if ($diffinfo->{'nparents'}) {
1894                 # combined diff
1895                 $from->{'file'} = [];
1896                 $from->{'href'} = [];
1897                 fill_from_file_info($diffinfo, @parents)
1898                         unless exists $diffinfo->{'from_file'};
1899                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1900                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1901                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1902                                 $from->{'href'}[$i] = href(action=>"blob",
1903                                                            hash_base=>$parents[$i],
1904                                                            hash=>$diffinfo->{'from_id'}[$i],
1905                                                            file_name=>$from->{'file'}[$i]);
1906                         } else {
1907                                 $from->{'href'}[$i] = undef;
1908                         }
1909                 }
1910         } else {
1911                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1912                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1913                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1914                                                hash=>$diffinfo->{'from_id'},
1915                                                file_name=>$from->{'file'});
1916                 } else {
1917                         delete $from->{'href'};
1918                 }
1919         }
1920
1921         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1922         if (!is_deleted($diffinfo)) { # file exists in result
1923                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1924                                      hash=>$diffinfo->{'to_id'},
1925                                      file_name=>$to->{'file'});
1926         } else {
1927                 delete $to->{'href'};
1928         }
1929 }
1930
1931 ## ......................................................................
1932 ## parse to array of hashes functions
1933
1934 sub git_get_heads_list {
1935         my $limit = shift;
1936         my @headslist;
1937
1938         open my $fd, '-|', git_cmd(), 'for-each-ref',
1939                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1940                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1941                 'refs/heads'
1942                 or return;
1943         while (my $line = <$fd>) {
1944                 my %ref_item;
1945
1946                 chomp $line;
1947                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1948                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1949                 my ($committer, $epoch, $tz) =
1950                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1951                 $name =~ s!^refs/heads/!!;
1952
1953                 $ref_item{'name'}  = $name;
1954                 $ref_item{'id'}    = $hash;
1955                 $ref_item{'title'} = $title || '(no commit message)';
1956                 $ref_item{'epoch'} = $epoch;
1957                 if ($epoch) {
1958                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1959                 } else {
1960                         $ref_item{'age'} = "unknown";
1961                 }
1962
1963                 push @headslist, \%ref_item;
1964         }
1965         close $fd;
1966
1967         return wantarray ? @headslist : \@headslist;
1968 }
1969
1970 sub git_get_tags_list {
1971         my $limit = shift;
1972         my @tagslist;
1973
1974         open my $fd, '-|', git_cmd(), 'for-each-ref',
1975                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1976                 '--format=%(objectname) %(objecttype) %(refname) '.
1977                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1978                 'refs/tags'
1979                 or return;
1980         while (my $line = <$fd>) {
1981                 my %ref_item;
1982
1983                 chomp $line;
1984                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1985                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1986                 my ($creator, $epoch, $tz) =
1987                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1988                 $name =~ s!^refs/tags/!!;
1989
1990                 $ref_item{'type'} = $type;
1991                 $ref_item{'id'} = $id;
1992                 $ref_item{'name'} = $name;
1993                 if ($type eq "tag") {
1994                         $ref_item{'subject'} = $title;
1995                         $ref_item{'reftype'} = $reftype;
1996                         $ref_item{'refid'}   = $refid;
1997                 } else {
1998                         $ref_item{'reftype'} = $type;
1999                         $ref_item{'refid'}   = $id;
2000                 }
2001
2002                 if ($type eq "tag" || $type eq "commit") {
2003                         $ref_item{'epoch'} = $epoch;
2004                         if ($epoch) {
2005                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2006                         } else {
2007                                 $ref_item{'age'} = "unknown";
2008                         }
2009                 }
2010
2011                 push @tagslist, \%ref_item;
2012         }
2013         close $fd;
2014
2015         return wantarray ? @tagslist : \@tagslist;
2016 }
2017
2018 ## ----------------------------------------------------------------------
2019 ## filesystem-related functions
2020
2021 sub get_file_owner {
2022         my $path = shift;
2023
2024         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2025         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2026         if (!defined $gcos) {
2027                 return undef;
2028         }
2029         my $owner = $gcos;
2030         $owner =~ s/[,;].*$//;
2031         return to_utf8($owner);
2032 }
2033
2034 ## ......................................................................
2035 ## mimetype related functions
2036
2037 sub mimetype_guess_file {
2038         my $filename = shift;
2039         my $mimemap = shift;
2040         -r $mimemap or return undef;
2041
2042         my %mimemap;
2043         open(MIME, $mimemap) or return undef;
2044         while (<MIME>) {
2045                 next if m/^#/; # skip comments
2046                 my ($mime, $exts) = split(/\t+/);
2047                 if (defined $exts) {
2048                         my @exts = split(/\s+/, $exts);
2049                         foreach my $ext (@exts) {
2050                                 $mimemap{$ext} = $mime;
2051                         }
2052                 }
2053         }
2054         close(MIME);
2055
2056         $filename =~ /\.([^.]*)$/;
2057         return $mimemap{$1};
2058 }
2059
2060 sub mimetype_guess {
2061         my $filename = shift;
2062         my $mime;
2063         $filename =~ /\./ or return undef;
2064
2065         if ($mimetypes_file) {
2066                 my $file = $mimetypes_file;
2067                 if ($file !~ m!^/!) { # if it is relative path
2068                         # it is relative to project
2069                         $file = "$projectroot/$project/$file";
2070                 }
2071                 $mime = mimetype_guess_file($filename, $file);
2072         }
2073         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2074         return $mime;
2075 }
2076
2077 sub blob_mimetype {
2078         my $fd = shift;
2079         my $filename = shift;
2080
2081         if ($filename) {
2082                 my $mime = mimetype_guess($filename);
2083                 $mime and return $mime;
2084         }
2085
2086         # just in case
2087         return $default_blob_plain_mimetype unless $fd;
2088
2089         if (-T $fd) {
2090                 return 'text/plain' .
2091                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2092         } elsif (! $filename) {
2093                 return 'application/octet-stream';
2094         } elsif ($filename =~ m/\.png$/i) {
2095                 return 'image/png';
2096         } elsif ($filename =~ m/\.gif$/i) {
2097                 return 'image/gif';
2098         } elsif ($filename =~ m/\.jpe?g$/i) {
2099                 return 'image/jpeg';
2100         } else {
2101                 return 'application/octet-stream';
2102         }
2103 }
2104
2105 ## ======================================================================
2106 ## functions printing HTML: header, footer, error page
2107
2108 sub git_header_html {
2109         my $status = shift || "200 OK";
2110         my $expires = shift;
2111
2112         my $title = "$site_name";
2113         if (defined $project) {
2114                 $title .= " - " . to_utf8($project);
2115                 if (defined $action) {
2116                         $title .= "/$action";
2117                         if (defined $file_name) {
2118                                 $title .= " - " . esc_path($file_name);
2119                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2120                                         $title .= "/";
2121                                 }
2122                         }
2123                 }
2124         }
2125         my $content_type;
2126         # require explicit support from the UA if we are to send the page as
2127         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2128         # we have to do this because MSIE sometimes globs '*/*', pretending to
2129         # support xhtml+xml but choking when it gets what it asked for.
2130         if (defined $cgi->http('HTTP_ACCEPT') &&
2131             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2132             $cgi->Accept('application/xhtml+xml') != 0) {
2133                 $content_type = 'application/xhtml+xml';
2134         } else {
2135                 $content_type = 'text/html';
2136         }
2137         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2138                            -status=> $status, -expires => $expires);
2139         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2140         print <<EOF;
2141 <?xml version="1.0" encoding="utf-8"?>
2142 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2143 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2144 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2145 <!-- git core binaries version $git_version -->
2146 <head>
2147 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2148 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2149 <meta name="robots" content="index, nofollow"/>
2150 <title>$title</title>
2151 EOF
2152 # print out each stylesheet that exist
2153         if (defined $stylesheet) {
2154 #provides backwards capability for those people who define style sheet in a config file
2155                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2156         } else {
2157                 foreach my $stylesheet (@stylesheets) {
2158                         next unless $stylesheet;
2159                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2160                 }
2161         }
2162         if (defined $project) {
2163                 printf('<link rel="alternate" title="%s log RSS feed" '.
2164                        'href="%s" type="application/rss+xml" />'."\n",
2165                        esc_param($project), href(action=>"rss"));
2166                 printf('<link rel="alternate" title="%s log Atom feed" '.
2167                        'href="%s" type="application/atom+xml" />'."\n",
2168                        esc_param($project), href(action=>"atom"));
2169         } else {
2170                 printf('<link rel="alternate" title="%s projects list" '.
2171                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2172                        $site_name, href(project=>undef, action=>"project_index"));
2173                 printf('<link rel="alternate" title="%s projects feeds" '.
2174                        'href="%s" type="text/x-opml"/>'."\n",
2175                        $site_name, href(project=>undef, action=>"opml"));
2176         }
2177         if (defined $favicon) {
2178                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2179         }
2180
2181         print "</head>\n" .
2182               "<body>\n";
2183
2184         if (-f $site_header) {
2185                 open (my $fd, $site_header);
2186                 print <$fd>;
2187                 close $fd;
2188         }
2189
2190         print "<div class=\"page_header\">\n" .
2191               $cgi->a({-href => esc_url($logo_url),
2192                        -title => $logo_label},
2193                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2194         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2195         if (defined $project) {
2196                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2197                 if (defined $action) {
2198                         print " / $action";
2199                 }
2200                 print "\n";
2201         }
2202         print "</div>\n";
2203
2204         my ($have_search) = gitweb_check_feature('search');
2205         if ((defined $project) && ($have_search)) {
2206                 if (!defined $searchtext) {
2207                         $searchtext = "";
2208                 }
2209                 my $search_hash;
2210                 if (defined $hash_base) {
2211                         $search_hash = $hash_base;
2212                 } elsif (defined $hash) {
2213                         $search_hash = $hash;
2214                 } else {
2215                         $search_hash = "HEAD";
2216                 }
2217                 $cgi->param("a", "search");
2218                 $cgi->param("h", $search_hash);
2219                 $cgi->param("p", $project);
2220                 print $cgi->startform(-method => "get", -action => $my_uri) .
2221                       "<div class=\"search\">\n" .
2222                       $cgi->hidden(-name => "p") . "\n" .
2223                       $cgi->hidden(-name => "a") . "\n" .
2224                       $cgi->hidden(-name => "h") . "\n" .
2225                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2226                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2227                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2228                       " search:\n",
2229                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2230                       "</div>" .
2231                       $cgi->end_form() . "\n";
2232         }
2233 }
2234
2235 sub git_footer_html {
2236         print "<div class=\"page_footer\">\n";
2237         if (defined $project) {
2238                 my $descr = git_get_project_description($project);
2239                 if (defined $descr) {
2240                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2241                 }
2242                 print $cgi->a({-href => href(action=>"rss"),
2243                               -class => "rss_logo"}, "RSS") . " ";
2244                 print $cgi->a({-href => href(action=>"atom"),
2245                               -class => "rss_logo"}, "Atom") . "\n";
2246         } else {
2247                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2248                               -class => "rss_logo"}, "OPML") . " ";
2249                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2250                               -class => "rss_logo"}, "TXT") . "\n";
2251         }
2252         print "</div>\n" ;
2253
2254         if (-f $site_footer) {
2255                 open (my $fd, $site_footer);
2256                 print <$fd>;
2257                 close $fd;
2258         }
2259
2260         print "</body>\n" .
2261               "</html>";
2262 }
2263
2264 sub die_error {
2265         my $status = shift || "403 Forbidden";
2266         my $error = shift || "Malformed query, file missing or permission denied";
2267
2268         git_header_html($status);
2269         print <<EOF;
2270 <div class="page_body">
2271 <br /><br />
2272 $status - $error
2273 <br />
2274 </div>
2275 EOF
2276         git_footer_html();
2277         exit;
2278 }
2279
2280 ## ----------------------------------------------------------------------
2281 ## functions printing or outputting HTML: navigation
2282
2283 sub git_print_page_nav {
2284         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2285         $extra = '' if !defined $extra; # pager or formats
2286
2287         my @navs = qw(summary shortlog log commit commitdiff tree);
2288         if ($suppress) {
2289                 @navs = grep { $_ ne $suppress } @navs;
2290         }
2291
2292         my %arg = map { $_ => {action=>$_} } @navs;
2293         if (defined $head) {
2294                 for (qw(commit commitdiff)) {
2295                         $arg{$_}{'hash'} = $head;
2296                 }
2297                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2298                         for (qw(shortlog log)) {
2299                                 $arg{$_}{'hash'} = $head;
2300                         }
2301                 }
2302         }
2303         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2304         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2305
2306         print "<div class=\"page_nav\">\n" .
2307                 (join " | ",
2308                  map { $_ eq $current ?
2309                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2310                  } @navs);
2311         print "<br/>\n$extra<br/>\n" .
2312               "</div>\n";
2313 }
2314
2315 sub format_paging_nav {
2316         my ($action, $hash, $head, $page, $nrevs) = @_;
2317         my $paging_nav;
2318
2319
2320         if ($hash ne $head || $page) {
2321                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2322         } else {
2323                 $paging_nav .= "HEAD";
2324         }
2325
2326         if ($page > 0) {
2327                 $paging_nav .= " &sdot; " .
2328                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2329                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2330         } else {
2331                 $paging_nav .= " &sdot; prev";
2332         }
2333
2334         if ($nrevs >= (100 * ($page+1)-1)) {
2335                 $paging_nav .= " &sdot; " .
2336                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2337                                  -accesskey => "n", -title => "Alt-n"}, "next");
2338         } else {
2339                 $paging_nav .= " &sdot; next";
2340         }
2341
2342         return $paging_nav;
2343 }
2344
2345 ## ......................................................................
2346 ## functions printing or outputting HTML: div
2347
2348 sub git_print_header_div {
2349         my ($action, $title, $hash, $hash_base) = @_;
2350         my %args = ();
2351
2352         $args{'action'} = $action;
2353         $args{'hash'} = $hash if $hash;
2354         $args{'hash_base'} = $hash_base if $hash_base;
2355
2356         print "<div class=\"header\">\n" .
2357               $cgi->a({-href => href(%args), -class => "title"},
2358               $title ? $title : $action) .
2359               "\n</div>\n";
2360 }
2361
2362 #sub git_print_authorship (\%) {
2363 sub git_print_authorship {
2364         my $co = shift;
2365
2366         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2367         print "<div class=\"author_date\">" .
2368               esc_html($co->{'author_name'}) .
2369               " [$ad{'rfc2822'}";
2370         if ($ad{'hour_local'} < 6) {
2371                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2372                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2373         } else {
2374                 printf(" (%02d:%02d %s)",
2375                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2376         }
2377         print "]</div>\n";
2378 }
2379
2380 sub git_print_page_path {
2381         my $name = shift;
2382         my $type = shift;
2383         my $hb = shift;
2384
2385
2386         print "<div class=\"page_path\">";
2387         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2388                       -title => 'tree root'}, to_utf8("[$project]"));
2389         print " / ";
2390         if (defined $name) {
2391                 my @dirname = split '/', $name;
2392                 my $basename = pop @dirname;
2393                 my $fullname = '';
2394
2395                 foreach my $dir (@dirname) {
2396                         $fullname .= ($fullname ? '/' : '') . $dir;
2397                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2398                                                      hash_base=>$hb),
2399                                       -title => $fullname}, esc_path($dir));
2400                         print " / ";
2401                 }
2402                 if (defined $type && $type eq 'blob') {
2403                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2404                                                      hash_base=>$hb),
2405                                       -title => $name}, esc_path($basename));
2406                 } elsif (defined $type && $type eq 'tree') {
2407                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2408                                                      hash_base=>$hb),
2409                                       -title => $name}, esc_path($basename));
2410                         print " / ";
2411                 } else {
2412                         print esc_path($basename);
2413                 }
2414         }
2415         print "<br/></div>\n";
2416 }
2417
2418 # sub git_print_log (\@;%) {
2419 sub git_print_log ($;%) {
2420         my $log = shift;
2421         my %opts = @_;
2422
2423         if ($opts{'-remove_title'}) {
2424                 # remove title, i.e. first line of log
2425                 shift @$log;
2426         }
2427         # remove leading empty lines
2428         while (defined $log->[0] && $log->[0] eq "") {
2429                 shift @$log;
2430         }
2431
2432         # print log
2433         my $signoff = 0;
2434         my $empty = 0;
2435         foreach my $line (@$log) {
2436                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2437                         $signoff = 1;
2438                         $empty = 0;
2439                         if (! $opts{'-remove_signoff'}) {
2440                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2441                                 next;
2442                         } else {
2443                                 # remove signoff lines
2444                                 next;
2445                         }
2446                 } else {
2447                         $signoff = 0;
2448                 }
2449
2450                 # print only one empty line
2451                 # do not print empty line after signoff
2452                 if ($line eq "") {
2453                         next if ($empty || $signoff);
2454                         $empty = 1;
2455                 } else {
2456                         $empty = 0;
2457                 }
2458
2459                 print format_log_line_html($line) . "<br/>\n";
2460         }
2461
2462         if ($opts{'-final_empty_line'}) {
2463                 # end with single empty line
2464                 print "<br/>\n" unless $empty;
2465         }
2466 }
2467
2468 # return link target (what link points to)
2469 sub git_get_link_target {
2470         my $hash = shift;
2471         my $link_target;
2472
2473         # read link
2474         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2475                 or return;
2476         {
2477                 local $/;
2478                 $link_target = <$fd>;
2479         }
2480         close $fd
2481                 or return;
2482
2483         return $link_target;
2484 }
2485
2486 # given link target, and the directory (basedir) the link is in,
2487 # return target of link relative to top directory (top tree);
2488 # return undef if it is not possible (including absolute links).
2489 sub normalize_link_target {
2490         my ($link_target, $basedir, $hash_base) = @_;
2491
2492         # we can normalize symlink target only if $hash_base is provided
2493         return unless $hash_base;
2494
2495         # absolute symlinks (beginning with '/') cannot be normalized
2496         return if (substr($link_target, 0, 1) eq '/');
2497
2498         # normalize link target to path from top (root) tree (dir)
2499         my $path;
2500         if ($basedir) {
2501                 $path = $basedir . '/' . $link_target;
2502         } else {
2503                 # we are in top (root) tree (dir)
2504                 $path = $link_target;
2505         }
2506
2507         # remove //, /./, and /../
2508         my @path_parts;
2509         foreach my $part (split('/', $path)) {
2510                 # discard '.' and ''
2511                 next if (!$part || $part eq '.');
2512                 # handle '..'
2513                 if ($part eq '..') {
2514                         if (@path_parts) {
2515                                 pop @path_parts;
2516                         } else {
2517                                 # link leads outside repository (outside top dir)
2518                                 return;
2519                         }
2520                 } else {
2521                         push @path_parts, $part;
2522                 }
2523         }
2524         $path = join('/', @path_parts);
2525
2526         return $path;
2527 }
2528
2529 # print tree entry (row of git_tree), but without encompassing <tr> element
2530 sub git_print_tree_entry {
2531         my ($t, $basedir, $hash_base, $have_blame) = @_;
2532
2533         my %base_key = ();
2534         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2535
2536         # The format of a table row is: mode list link.  Where mode is
2537         # the mode of the entry, list is the name of the entry, an href,
2538         # and link is the action links of the entry.
2539
2540         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2541         if ($t->{'type'} eq "blob") {
2542                 print "<td class=\"list\">" .
2543                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2544                                                file_name=>"$basedir$t->{'name'}", %base_key),
2545                                 -class => "list"}, esc_path($t->{'name'}));
2546                 if (S_ISLNK(oct $t->{'mode'})) {
2547                         my $link_target = git_get_link_target($t->{'hash'});
2548                         if ($link_target) {
2549                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2550                                 if (defined $norm_target) {
2551                                         print " -> " .
2552                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2553                                                                      file_name=>$norm_target),
2554                                                        -title => $norm_target}, esc_path($link_target));
2555                                 } else {
2556                                         print " -> " . esc_path($link_target);
2557                                 }
2558                         }
2559                 }
2560                 print "</td>\n";
2561                 print "<td class=\"link\">";
2562                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2563                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2564                               "blob");
2565                 if ($have_blame) {
2566                         print " | " .
2567                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2568                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2569                                       "blame");
2570                 }
2571                 if (defined $hash_base) {
2572                         print " | " .
2573                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2574                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2575                                       "history");
2576                 }
2577                 print " | " .
2578                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2579                                                file_name=>"$basedir$t->{'name'}")},
2580                                 "raw");
2581                 print "</td>\n";
2582
2583         } elsif ($t->{'type'} eq "tree") {
2584                 print "<td class=\"list\">";
2585                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2586                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2587                               esc_path($t->{'name'}));
2588                 print "</td>\n";
2589                 print "<td class=\"link\">";
2590                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2591                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2592                               "tree");
2593                 if (defined $hash_base) {
2594                         print " | " .
2595                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2596                                                      file_name=>"$basedir$t->{'name'}")},
2597                                       "history");
2598                 }
2599                 print "</td>\n";
2600         }
2601 }
2602
2603 ## ......................................................................
2604 ## functions printing large fragments of HTML
2605
2606 sub fill_from_file_info {
2607         my ($diff, @parents) = @_;
2608
2609         $diff->{'from_file'} = [ ];
2610         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2611         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2612                 if ($diff->{'status'}[$i] eq 'R' ||
2613                     $diff->{'status'}[$i] eq 'C') {
2614                         $diff->{'from_file'}[$i] =
2615                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2616                 }
2617         }
2618
2619         return $diff;
2620 }
2621
2622 # parameters can be strings, or references to arrays of strings
2623 sub from_ids_eq {
2624         my ($a, $b) = @_;
2625
2626         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2627                 for (my $i = 0; $i < @$a; ++$i) {
2628                         return 0 unless ($a->[$i] eq $b->[$i]);
2629                 }
2630                 return 1;
2631         } elsif (!ref($a) && !ref($b)) {
2632                 return $a eq $b;
2633         } else {
2634                 return 0;
2635         }
2636 }
2637
2638 sub is_deleted {
2639         my $diffinfo = shift;
2640
2641         return $diffinfo->{'to_id'} eq ('0' x 40);
2642 }
2643
2644 sub git_difftree_body {
2645         my ($difftree, $hash, @parents) = @_;
2646         my ($parent) = $parents[0];
2647         my ($have_blame) = gitweb_check_feature('blame');
2648         print "<div class=\"list_head\">\n";
2649         if ($#{$difftree} > 10) {
2650                 print(($#{$difftree} + 1) . " files changed:\n");
2651         }
2652         print "</div>\n";
2653
2654         print "<table class=\"" .
2655               (@parents > 1 ? "combined " : "") .
2656               "diff_tree\">\n";
2657
2658         # header only for combined diff in 'commitdiff' view
2659         my $has_header = @parents > 1 && $action eq 'commitdiff';
2660         if ($has_header) {
2661                 # table header
2662                 print "<thead><tr>\n" .
2663                        "<th></th><th></th>\n"; # filename, patchN link
2664                 for (my $i = 0; $i < @parents; $i++) {
2665                         my $par = $parents[$i];
2666                         print "<th>" .
2667                               $cgi->a({-href => href(action=>"commitdiff",
2668                                                      hash=>$hash, hash_parent=>$par),
2669                                        -title => 'commitdiff to parent number ' .
2670                                                   ($i+1) . ': ' . substr($par,0,7)},
2671                                       $i+1) .
2672                               "&nbsp;</th>\n";
2673                 }
2674                 print "</tr></thead>\n<tbody>\n";
2675         }
2676
2677         my $alternate = 1;
2678         my $patchno = 0;
2679         foreach my $line (@{$difftree}) {
2680                 my $diff;
2681                 if (ref($line) eq "HASH") {
2682                         # pre-parsed (or generated by hand)
2683                         $diff = $line;
2684                 } else {
2685                         $diff = parse_difftree_raw_line($line);
2686                 }
2687
2688                 if ($alternate) {
2689                         print "<tr class=\"dark\">\n";
2690                 } else {
2691                         print "<tr class=\"light\">\n";
2692                 }
2693                 $alternate ^= 1;
2694
2695                 if (exists $diff->{'nparents'}) { # combined diff
2696
2697                         fill_from_file_info($diff, @parents)
2698                                 unless exists $diff->{'from_file'};
2699
2700                         if (!is_deleted($diff)) {
2701                                 # file exists in the result (child) commit
2702                                 print "<td>" .
2703                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2704                                                              file_name=>$diff->{'to_file'},
2705                                                              hash_base=>$hash),
2706                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2707                                       "</td>\n";
2708                         } else {
2709                                 print "<td>" .
2710                                       esc_path($diff->{'to_file'}) .
2711                                       "</td>\n";
2712                         }
2713
2714                         if ($action eq 'commitdiff') {
2715                                 # link to patch
2716                                 $patchno++;
2717                                 print "<td class=\"link\">" .
2718                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2719                                       " | " .
2720                                       "</td>\n";
2721                         }
2722
2723                         my $has_history = 0;
2724                         my $not_deleted = 0;
2725                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2726                                 my $hash_parent = $parents[$i];
2727                                 my $from_hash = $diff->{'from_id'}[$i];
2728                                 my $from_path = $diff->{'from_file'}[$i];
2729                                 my $status = $diff->{'status'}[$i];
2730
2731                                 $has_history ||= ($status ne 'A');
2732                                 $not_deleted ||= ($status ne 'D');
2733
2734                                 if ($status eq 'A') {
2735                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2736                                 } elsif ($status eq 'D') {
2737                                         print "<td class=\"link\">" .
2738                                               $cgi->a({-href => href(action=>"blob",
2739                                                                      hash_base=>$hash,
2740                                                                      hash=>$from_hash,
2741                                                                      file_name=>$from_path)},
2742                                                       "blob" . ($i+1)) .
2743                                               " | </td>\n";
2744                                 } else {
2745                                         if ($diff->{'to_id'} eq $from_hash) {
2746                                                 print "<td class=\"link nochange\">";
2747                                         } else {
2748                                                 print "<td class=\"link\">";
2749                                         }
2750                                         print $cgi->a({-href => href(action=>"blobdiff",
2751                                                                      hash=>$diff->{'to_id'},
2752                                                                      hash_parent=>$from_hash,
2753                                                                      hash_base=>$hash,
2754                                                                      hash_parent_base=>$hash_parent,
2755                                                                      file_name=>$diff->{'to_file'},
2756                                                                      file_parent=>$from_path)},
2757                                                       "diff" . ($i+1)) .
2758                                               " | </td>\n";
2759                                 }
2760                         }
2761
2762                         print "<td class=\"link\">";
2763                         if ($not_deleted) {
2764                                 print $cgi->a({-href => href(action=>"blob",
2765                                                              hash=>$diff->{'to_id'},
2766                                                              file_name=>$diff->{'to_file'},
2767                                                              hash_base=>$hash)},
2768                                               "blob");
2769                                 print " | " if ($has_history);
2770                         }
2771                         if ($has_history) {
2772                                 print $cgi->a({-href => href(action=>"history",
2773                                                              file_name=>$diff->{'to_file'},
2774                                                              hash_base=>$hash)},
2775                                               "history");
2776                         }
2777                         print "</td>\n";
2778
2779                         print "</tr>\n";
2780                         next; # instead of 'else' clause, to avoid extra indent
2781                 }
2782                 # else ordinary diff
2783
2784                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2785                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2786                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2787                         $to_mode_oct = oct $diff->{'to_mode'};
2788                         if (S_ISREG($to_mode_oct)) { # only for regular file
2789                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2790                         }
2791                         $to_file_type = file_type($diff->{'to_mode'});
2792                 }
2793                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2794                         $from_mode_oct = oct $diff->{'from_mode'};
2795                         if (S_ISREG($to_mode_oct)) { # only for regular file
2796                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2797                         }
2798                         $from_file_type = file_type($diff->{'from_mode'});
2799                 }
2800
2801                 if ($diff->{'status'} eq "A") { # created
2802                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2803                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2804                         $mode_chng   .= "]</span>";
2805                         print "<td>";
2806                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2807                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2808                                       -class => "list"}, esc_path($diff->{'file'}));
2809                         print "</td>\n";
2810                         print "<td>$mode_chng</td>\n";
2811                         print "<td class=\"link\">";
2812                         if ($action eq 'commitdiff') {
2813                                 # link to patch
2814                                 $patchno++;
2815                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2816                                 print " | ";
2817                         }
2818                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2819                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2820                                       "blob");
2821                         print "</td>\n";
2822
2823                 } elsif ($diff->{'status'} eq "D") { # deleted
2824                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2825                         print "<td>";
2826                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2827                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2828                                        -class => "list"}, esc_path($diff->{'file'}));
2829                         print "</td>\n";
2830                         print "<td>$mode_chng</td>\n";
2831                         print "<td class=\"link\">";
2832                         if ($action eq 'commitdiff') {
2833                                 # link to patch
2834                                 $patchno++;
2835                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2836                                 print " | ";
2837                         }
2838                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2839                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2840                                       "blob") . " | ";
2841                         if ($have_blame) {
2842                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2843                                                              file_name=>$diff->{'file'})},
2844                                               "blame") . " | ";
2845                         }
2846                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2847                                                      file_name=>$diff->{'file'})},
2848                                       "history");
2849                         print "</td>\n";
2850
2851                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2852                         my $mode_chnge = "";
2853                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2854                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2855                                 if ($from_file_type ne $to_file_type) {
2856                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2857                                 }
2858                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2859                                         if ($from_mode_str && $to_mode_str) {
2860                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2861                                         } elsif ($to_mode_str) {
2862                                                 $mode_chnge .= " mode: $to_mode_str";
2863                                         }
2864                                 }
2865                                 $mode_chnge .= "]</span>\n";
2866                         }
2867                         print "<td>";
2868                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2869                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2870                                       -class => "list"}, esc_path($diff->{'file'}));
2871                         print "</td>\n";
2872                         print "<td>$mode_chnge</td>\n";
2873                         print "<td class=\"link\">";
2874                         if ($action eq 'commitdiff') {
2875                                 # link to patch
2876                                 $patchno++;
2877                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2878                                       " | ";
2879                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2880                                 # "commit" view and modified file (not onlu mode changed)
2881                                 print $cgi->a({-href => href(action=>"blobdiff",
2882                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2883                                                              hash_base=>$hash, hash_parent_base=>$parent,
2884                                                              file_name=>$diff->{'file'})},
2885                                               "diff") .
2886                                       " | ";
2887                         }
2888                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2889                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2890                                        "blob") . " | ";
2891                         if ($have_blame) {
2892                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2893                                                              file_name=>$diff->{'file'})},
2894                                               "blame") . " | ";
2895                         }
2896                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2897                                                      file_name=>$diff->{'file'})},
2898                                       "history");
2899                         print "</td>\n";
2900
2901                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2902                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2903                         my $nstatus = $status_name{$diff->{'status'}};
2904                         my $mode_chng = "";
2905                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2906                                 # mode also for directories, so we cannot use $to_mode_str
2907                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2908                         }
2909                         print "<td>" .
2910                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2911                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2912                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2913                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2914                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2915                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2916                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2917                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2918                               "<td class=\"link\">";
2919                         if ($action eq 'commitdiff') {
2920                                 # link to patch
2921                                 $patchno++;
2922                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2923                                       " | ";
2924                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2925                                 # "commit" view and modified file (not only pure rename or copy)
2926                                 print $cgi->a({-href => href(action=>"blobdiff",
2927                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2928                                                              hash_base=>$hash, hash_parent_base=>$parent,
2929                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2930                                               "diff") .
2931                                       " | ";
2932                         }
2933                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2934                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2935                                       "blob") . " | ";
2936                         if ($have_blame) {
2937                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2938                                                              file_name=>$diff->{'to_file'})},
2939                                               "blame") . " | ";
2940                         }
2941                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2942                                                     file_name=>$diff->{'to_file'})},
2943                                       "history");
2944                         print "</td>\n";
2945
2946                 } # we should not encounter Unmerged (U) or Unknown (X) status
2947                 print "</tr>\n";
2948         }
2949         print "</tbody>" if $has_header;
2950         print "</table>\n";
2951 }
2952
2953 sub git_patchset_body {
2954         my ($fd, $difftree, $hash, @hash_parents) = @_;
2955         my ($hash_parent) = $hash_parents[0];
2956
2957         my $patch_idx = 0;
2958         my $patch_number = 0;
2959         my $patch_line;
2960         my $diffinfo;
2961         my (%from, %to);
2962
2963         print "<div class=\"patchset\">\n";
2964
2965         # skip to first patch
2966         while ($patch_line = <$fd>) {
2967                 chomp $patch_line;
2968
2969                 last if ($patch_line =~ m/^diff /);
2970         }
2971
2972  PATCH:
2973         while ($patch_line) {
2974                 my @diff_header;
2975                 my ($from_id, $to_id);
2976
2977                 # git diff header
2978                 #assert($patch_line =~ m/^diff /) if DEBUG;
2979                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2980                 $patch_number++;
2981                 push @diff_header, $patch_line;
2982
2983                 # extended diff header
2984         EXTENDED_HEADER:
2985                 while ($patch_line = <$fd>) {
2986                         chomp $patch_line;
2987
2988                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2989
2990                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2991                                 $from_id = $1;
2992                                 $to_id   = $2;
2993                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2994                                 $from_id = [ split(',', $1) ];
2995                                 $to_id   = $2;
2996                         }
2997
2998                         push @diff_header, $patch_line;
2999                 }
3000                 my $last_patch_line = $patch_line;
3001
3002                 # check if current patch belong to current raw line
3003                 # and parse raw git-diff line if needed
3004                 if (defined $diffinfo &&
3005                     defined $from_id && defined $to_id &&
3006                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3007                     $diffinfo->{'to_id'} eq $to_id) {
3008                         # this is continuation of a split patch
3009                         print "<div class=\"patch cont\">\n";
3010                 } else {
3011                         # advance raw git-diff output if needed
3012                         $patch_idx++ if defined $diffinfo;
3013
3014                         # compact combined diff output can have some patches skipped
3015                         # find which patch (using pathname of result) we are at now
3016                         my $to_name;
3017                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3018                                 $to_name = $1;
3019                         }
3020
3021                         do {
3022                                 # read and prepare patch information
3023                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3024                                         # pre-parsed (or generated by hand)
3025                                         $diffinfo = $difftree->[$patch_idx];
3026                                 } else {
3027                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3028                                 }
3029
3030                                 # check if current raw line has no patch (it got simplified)
3031                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3032                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3033                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3034                                               "</div>\n";  # class="patch"
3035
3036                                         $patch_idx++;
3037                                         $patch_number++;
3038                                 }
3039                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3040                                  $patch_idx > $#$difftree);
3041                         # modifies %from, %to hashes
3042                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3043                         if ($diffinfo->{'nparents'}) {
3044                                 # combined diff
3045                                 $from{'file'} = [];
3046                                 $from{'href'} = [];
3047                                 fill_from_file_info($diffinfo, @hash_parents)
3048                                         unless exists $diffinfo->{'from_file'};
3049                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3050                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3051                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3052                                                 $from{'href'}[$i] = href(action=>"blob",
3053                                                                          hash_base=>$hash_parents[$i],
3054                                                                          hash=>$diffinfo->{'from_id'}[$i],
3055                                                                          file_name=>$from{'file'}[$i]);
3056                                         } else {
3057                                                 $from{'href'}[$i] = undef;
3058                                         }
3059                                 }
3060                         } else {
3061                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3062                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3063                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3064                                                              hash=>$diffinfo->{'from_id'},
3065                                                              file_name=>$from{'file'});
3066                                 } else {
3067                                         delete $from{'href'};
3068                                 }
3069                         }
3070
3071                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3072                         if (!is_deleted($diffinfo)) { # file exists in result
3073                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3074                                                    hash=>$diffinfo->{'to_id'},
3075                                                    file_name=>$to{'file'});
3076                         } else {
3077                                 delete $to{'href'};
3078                         }
3079                         # this is first patch for raw difftree line with $patch_idx index
3080                         # we index @$difftree array from 0, but number patches from 1
3081                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3082                 }
3083
3084                 # print "git diff" header
3085                 $patch_line = shift @diff_header;
3086                 print format_git_diff_header_line($patch_line, $diffinfo,
3087                                                   \%from, \%to);
3088
3089                 # print extended diff header
3090                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3091         EXTENDED_HEADER:
3092                 foreach $patch_line (@diff_header) {
3093                         print format_extended_diff_header_line($patch_line, $diffinfo,
3094                                                                \%from, \%to);
3095                 }
3096                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3097
3098                 # from-file/to-file diff header
3099                 $patch_line = $last_patch_line;
3100                 if (! $patch_line) {
3101                         print "</div>\n"; # class="patch"
3102                         last PATCH;
3103                 }
3104                 next PATCH if ($patch_line =~ m/^diff /);
3105                 #assert($patch_line =~ m/^---/) if DEBUG;
3106                 #assert($patch_line eq $last_patch_line) if DEBUG;
3107
3108                 $patch_line = <$fd>;
3109                 chomp $patch_line;
3110                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3111
3112                 print format_diff_from_to_header($last_patch_line, $patch_line,
3113                                                  $diffinfo, \%from, \%to,
3114                                                  @hash_parents);
3115
3116                 # the patch itself
3117         LINE:
3118                 while ($patch_line = <$fd>) {
3119                         chomp $patch_line;
3120
3121                         next PATCH if ($patch_line =~ m/^diff /);
3122
3123                         print format_diff_line($patch_line, \%from, \%to);
3124                 }
3125
3126         } continue {
3127                 print "</div>\n"; # class="patch"
3128         }
3129
3130         # for compact combined (--cc) format, with chunk and patch simpliciaction
3131         # patchset might be empty, but there might be unprocessed raw lines
3132         for ($patch_idx++ if $patch_number > 0;
3133              $patch_idx < @$difftree;
3134              $patch_idx++) {
3135                 # read and prepare patch information
3136                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3137                         # pre-parsed (or generated by hand)
3138                         $diffinfo = $difftree->[$patch_idx];
3139                 } else {
3140                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3141                 }
3142
3143                 # generate anchor for "patch" links in difftree / whatchanged part
3144                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3145                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3146                       "</div>\n";  # class="patch"
3147
3148                 $patch_number++;
3149         }
3150
3151         if ($patch_number == 0) {
3152                 if (@hash_parents > 1) {
3153                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3154                 } else {
3155                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3156                 }
3157         }
3158
3159         print "</div>\n"; # class="patchset"
3160 }
3161
3162 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3163
3164 sub git_project_list_body {
3165         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3166
3167         my ($check_forks) = gitweb_check_feature('forks');
3168
3169         my @projects;
3170         foreach my $pr (@$projlist) {
3171                 my (@aa) = git_get_last_activity($pr->{'path'});
3172                 unless (@aa) {
3173                         next;
3174                 }
3175                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3176                 if (!defined $pr->{'descr'}) {
3177                         my $descr = git_get_project_description($pr->{'path'}) || "";
3178                         $pr->{'descr_long'} = to_utf8($descr);
3179                         $pr->{'descr'} = chop_str($descr, 25, 5);
3180                 }
3181                 if (!defined $pr->{'owner'}) {
3182                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
3183                 }
3184                 if ($check_forks) {
3185                         my $pname = $pr->{'path'};
3186                         if (($pname =~ s/\.git$//) &&
3187                             ($pname !~ /\/$/) &&
3188                             (-d "$projectroot/$pname")) {
3189                                 $pr->{'forks'} = "-d $projectroot/$pname";
3190                         }
3191                         else {
3192                                 $pr->{'forks'} = 0;
3193                         }
3194                 }
3195                 push @projects, $pr;
3196         }
3197
3198         $order ||= $default_projects_order;
3199         $from = 0 unless defined $from;
3200         $to = $#projects if (!defined $to || $#projects < $to);
3201
3202         print "<table class=\"project_list\">\n";
3203         unless ($no_header) {
3204                 print "<tr>\n";
3205                 if ($check_forks) {
3206                         print "<th></th>\n";
3207                 }
3208                 if ($order eq "project") {
3209                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3210                         print "<th>Project</th>\n";
3211                 } else {
3212                         print "<th>" .
3213                               $cgi->a({-href => href(project=>undef, order=>'project'),
3214                                        -class => "header"}, "Project") .
3215                               "</th>\n";
3216                 }
3217                 if ($order eq "descr") {
3218                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3219                         print "<th>Description</th>\n";
3220                 } else {
3221                         print "<th>" .
3222                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3223                                        -class => "header"}, "Description") .
3224                               "</th>\n";
3225                 }
3226                 if ($order eq "owner") {
3227                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3228                         print "<th>Owner</th>\n";
3229                 } else {
3230                         print "<th>" .
3231                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3232                                        -class => "header"}, "Owner") .
3233                               "</th>\n";
3234                 }
3235                 if ($order eq "age") {
3236                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3237                         print "<th>Last Change</th>\n";
3238                 } else {
3239                         print "<th>" .
3240                               $cgi->a({-href => href(project=>undef, order=>'age'),
3241                                        -class => "header"}, "Last Change") .
3242                               "</th>\n";
3243                 }
3244                 print "<th></th>\n" .
3245                       "</tr>\n";
3246         }
3247         my $alternate = 1;
3248         for (my $i = $from; $i <= $to; $i++) {
3249                 my $pr = $projects[$i];
3250                 if ($alternate) {
3251                         print "<tr class=\"dark\">\n";
3252                 } else {
3253                         print "<tr class=\"light\">\n";
3254                 }
3255                 $alternate ^= 1;
3256                 if ($check_forks) {
3257                         print "<td>";
3258                         if ($pr->{'forks'}) {
3259                                 print "<!-- $pr->{'forks'} -->\n";
3260                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3261                         }
3262                         print "</td>\n";
3263                 }
3264                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3265                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3266                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3267                                         -class => "list", -title => $pr->{'descr_long'}},
3268                                         esc_html($pr->{'descr'})) . "</td>\n" .
3269                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3270                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3271                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3272                       "<td class=\"link\">" .
3273                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3274                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3275                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3276                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3277                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3278                       "</td>\n" .
3279                       "</tr>\n";
3280         }
3281         if (defined $extra) {
3282                 print "<tr>\n";
3283                 if ($check_forks) {
3284                         print "<td></td>\n";
3285                 }
3286                 print "<td colspan=\"5\">$extra</td>\n" .
3287                       "</tr>\n";
3288         }
3289         print "</table>\n";
3290 }
3291
3292 sub git_shortlog_body {
3293         # uses global variable $project
3294         my ($commitlist, $from, $to, $refs, $extra) = @_;
3295
3296         my $have_snapshot = gitweb_have_snapshot();
3297
3298         $from = 0 unless defined $from;
3299         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3300
3301         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3302         my $alternate = 1;
3303         for (my $i = $from; $i <= $to; $i++) {
3304                 my %co = %{$commitlist->[$i]};
3305                 my $commit = $co{'id'};
3306                 my $ref = format_ref_marker($refs, $commit);
3307                 if ($alternate) {
3308                         print "<tr class=\"dark\">\n";
3309                 } else {
3310                         print "<tr class=\"light\">\n";
3311                 }
3312                 $alternate ^= 1;
3313                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3314                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3315                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3316                       "<td>";
3317                 print format_subject_html($co{'title'}, $co{'title_short'},
3318                                           href(action=>"commit", hash=>$commit), $ref);
3319                 print "</td>\n" .
3320                       "<td class=\"link\">" .
3321                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3322                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3323                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3324                 if ($have_snapshot) {
3325                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3326                 }
3327                 print "</td>\n" .
3328                       "</tr>\n";
3329         }
3330         if (defined $extra) {
3331                 print "<tr>\n" .
3332                       "<td colspan=\"4\">$extra</td>\n" .
3333                       "</tr>\n";
3334         }
3335         print "</table>\n";
3336 }
3337
3338 sub git_history_body {
3339         # Warning: assumes constant type (blob or tree) during history
3340         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3341
3342         $from = 0 unless defined $from;
3343         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3344
3345         print "<table class=\"history\" cellspacing=\"0\">\n";
3346         my $alternate = 1;
3347         for (my $i = $from; $i <= $to; $i++) {
3348                 my %co = %{$commitlist->[$i]};
3349                 if (!%co) {
3350                         next;
3351                 }
3352                 my $commit = $co{'id'};
3353
3354                 my $ref = format_ref_marker($refs, $commit);
3355
3356                 if ($alternate) {
3357                         print "<tr class=\"dark\">\n";
3358                 } else {
3359                         print "<tr class=\"light\">\n";
3360                 }
3361                 $alternate ^= 1;
3362                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3363                       # shortlog uses      chop_str($co{'author_name'}, 10)
3364                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3365                       "<td>";
3366                 # originally git_history used chop_str($co{'title'}, 50)
3367                 print format_subject_html($co{'title'}, $co{'title_short'},
3368                                           href(action=>"commit", hash=>$commit), $ref);
3369                 print "</td>\n" .
3370                       "<td class=\"link\">" .
3371                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3372                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3373
3374                 if ($ftype eq 'blob') {
3375                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3376                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3377                         if (defined $blob_current && defined $blob_parent &&
3378                                         $blob_current ne $blob_parent) {
3379                                 print " | " .
3380                                         $cgi->a({-href => href(action=>"blobdiff",
3381                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3382                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3383                                                                file_name=>$file_name)},
3384                                                 "diff to current");
3385                         }
3386                 }
3387                 print "</td>\n" .
3388                       "</tr>\n";
3389         }
3390         if (defined $extra) {
3391                 print "<tr>\n" .
3392                       "<td colspan=\"4\">$extra</td>\n" .
3393                       "</tr>\n";
3394         }
3395         print "</table>\n";
3396 }
3397
3398 sub git_tags_body {
3399         # uses global variable $project
3400         my ($taglist, $from, $to, $extra) = @_;
3401         $from = 0 unless defined $from;
3402         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3403
3404         print "<table class=\"tags\" cellspacing=\"0\">\n";
3405         my $alternate = 1;
3406         for (my $i = $from; $i <= $to; $i++) {
3407                 my $entry = $taglist->[$i];
3408                 my %tag = %$entry;
3409                 my $comment = $tag{'subject'};
3410                 my $comment_short;
3411                 if (defined $comment) {
3412                         $comment_short = chop_str($comment, 30, 5);
3413                 }
3414                 if ($alternate) {
3415                         print "<tr class=\"dark\">\n";
3416                 } else {
3417                         print "<tr class=\"light\">\n";
3418                 }
3419                 $alternate ^= 1;
3420                 if (defined $tag{'age'}) {
3421                         print "<td><i>$tag{'age'}</i></td>\n";
3422                 } else {
3423                         print "<td></td>\n";
3424                 }
3425                 print "<td>" .
3426                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3427                                -class => "list name"}, esc_html($tag{'name'})) .
3428                       "</td>\n" .
3429                       "<td>";
3430                 if (defined $comment) {
3431                         print format_subject_html($comment, $comment_short,
3432                                                   href(action=>"tag", hash=>$tag{'id'}));
3433                 }
3434                 print "</td>\n" .
3435                       "<td class=\"selflink\">";
3436                 if ($tag{'type'} eq "tag") {
3437                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3438                 } else {
3439                         print "&nbsp;";
3440                 }
3441                 print "</td>\n" .
3442                       "<td class=\"link\">" . " | " .
3443                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3444                 if ($tag{'reftype'} eq "commit") {
3445                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3446                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3447                 } elsif ($tag{'reftype'} eq "blob") {
3448                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3449                 }
3450                 print "</td>\n" .
3451                       "</tr>";
3452         }
3453         if (defined $extra) {
3454                 print "<tr>\n" .
3455                       "<td colspan=\"5\">$extra</td>\n" .
3456                       "</tr>\n";
3457         }
3458         print "</table>\n";
3459 }
3460
3461 sub git_heads_body {
3462         # uses global variable $project
3463         my ($headlist, $head, $from, $to, $extra) = @_;
3464         $from = 0 unless defined $from;
3465         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3466
3467         print "<table class=\"heads\" cellspacing=\"0\">\n";
3468         my $alternate = 1;
3469         for (my $i = $from; $i <= $to; $i++) {
3470                 my $entry = $headlist->[$i];
3471                 my %ref = %$entry;
3472                 my $curr = $ref{'id'} eq $head;
3473                 if ($alternate) {
3474                         print "<tr class=\"dark\">\n";
3475                 } else {
3476                         print "<tr class=\"light\">\n";
3477                 }
3478                 $alternate ^= 1;
3479                 print "<td><i>$ref{'age'}</i></td>\n" .
3480                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3481                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3482                                -class => "list name"},esc_html($ref{'name'})) .
3483                       "</td>\n" .
3484                       "<td class=\"link\">" .
3485                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3486                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3487                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3488                       "</td>\n" .
3489                       "</tr>";
3490         }
3491         if (defined $extra) {
3492                 print "<tr>\n" .
3493                       "<td colspan=\"3\">$extra</td>\n" .
3494                       "</tr>\n";
3495         }
3496         print "</table>\n";
3497 }
3498
3499 sub git_search_grep_body {
3500         my ($commitlist, $from, $to, $extra) = @_;
3501         $from = 0 unless defined $from;
3502         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3503
3504         print "<table class=\"grep\" cellspacing=\"0\">\n";
3505         my $alternate = 1;
3506         for (my $i = $from; $i <= $to; $i++) {
3507                 my %co = %{$commitlist->[$i]};
3508                 if (!%co) {
3509                         next;
3510                 }
3511                 my $commit = $co{'id'};
3512                 if ($alternate) {
3513                         print "<tr class=\"dark\">\n";
3514                 } else {
3515                         print "<tr class=\"light\">\n";
3516                 }
3517                 $alternate ^= 1;
3518                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3519                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3520                       "<td>" .
3521                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3522                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3523                 my $comment = $co{'comment'};
3524                 foreach my $line (@$comment) {
3525                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3526                                 my $lead = esc_html($1) || "";
3527                                 $lead = chop_str($lead, 30, 10);
3528                                 my $match = esc_html($2) || "";
3529                                 my $trail = esc_html($3) || "";
3530                                 $trail = chop_str($trail, 30, 10);
3531                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3532                                 print chop_str($text, 80, 5) . "<br/>\n";
3533                         }
3534                 }
3535                 print "</td>\n" .
3536                       "<td class=\"link\">" .
3537                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3538                       " | " .
3539                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3540                 print "</td>\n" .
3541                       "</tr>\n";
3542         }
3543         if (defined $extra) {
3544                 print "<tr>\n" .
3545                       "<td colspan=\"3\">$extra</td>\n" .
3546                       "</tr>\n";
3547         }
3548         print "</table>\n";
3549 }
3550
3551 ## ======================================================================
3552 ## ======================================================================
3553 ## actions
3554
3555 sub git_project_list {
3556         my $order = $cgi->param('o');
3557         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3558                 die_error(undef, "Unknown order parameter");
3559         }
3560
3561         my @list = git_get_projects_list();
3562         if (!@list) {
3563                 die_error(undef, "No projects found");
3564         }
3565
3566         git_header_html();
3567         if (-f $home_text) {
3568                 print "<div class=\"index_include\">\n";
3569                 open (my $fd, $home_text);
3570                 print <$fd>;
3571                 close $fd;
3572                 print "</div>\n";
3573         }
3574         git_project_list_body(\@list, $order);
3575         git_footer_html();
3576 }
3577
3578 sub git_forks {
3579         my $order = $cgi->param('o');
3580         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3581                 die_error(undef, "Unknown order parameter");
3582         }
3583
3584         my @list = git_get_projects_list($project);
3585         if (!@list) {
3586                 die_error(undef, "No forks found");
3587         }
3588
3589         git_header_html();
3590         git_print_page_nav('','');
3591         git_print_header_div('summary', "$project forks");
3592         git_project_list_body(\@list, $order);
3593         git_footer_html();
3594 }
3595
3596 sub git_project_index {
3597         my @projects = git_get_projects_list($project);
3598
3599         print $cgi->header(
3600                 -type => 'text/plain',
3601                 -charset => 'utf-8',
3602                 -content_disposition => 'inline; filename="index.aux"');
3603
3604         foreach my $pr (@projects) {
3605                 if (!exists $pr->{'owner'}) {
3606                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3607                 }
3608
3609                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3610                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3611                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3612                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3613                 $path  =~ s/ /\+/g;
3614                 $owner =~ s/ /\+/g;
3615
3616                 print "$path $owner\n";
3617         }
3618 }
3619
3620 sub git_summary {
3621         my $descr = git_get_project_description($project) || "none";
3622         my %co = parse_commit("HEAD");
3623         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3624         my $head = $co{'id'};
3625
3626         my $owner = git_get_project_owner($project);
3627
3628         my $refs = git_get_references();
3629         # These get_*_list functions return one more to allow us to see if
3630         # there are more ...
3631         my @taglist  = git_get_tags_list(16);
3632         my @headlist = git_get_heads_list(16);
3633         my @forklist;
3634         my ($check_forks) = gitweb_check_feature('forks');
3635
3636         if ($check_forks) {
3637                 @forklist = git_get_projects_list($project);
3638         }
3639
3640         git_header_html();
3641         git_print_page_nav('summary','', $head);
3642
3643         print "<div class=\"title\">&nbsp;</div>\n";
3644         print "<table cellspacing=\"0\">\n" .
3645               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3646               "<tr><td>owner</td><td>$owner</td></tr>\n";
3647         if (defined $cd{'rfc2822'}) {
3648                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3649         }
3650
3651         # use per project git URL list in $projectroot/$project/cloneurl
3652         # or make project git URL from git base URL and project name
3653         my $url_tag = "URL";
3654         my @url_list = git_get_project_url_list($project);
3655         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3656         foreach my $git_url (@url_list) {
3657                 next unless $git_url;
3658                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3659                 $url_tag = "";
3660         }
3661         print "</table>\n";
3662
3663         if (-s "$projectroot/$project/README.html") {
3664                 if (open my $fd, "$projectroot/$project/README.html") {
3665                         print "<div class=\"title\">readme</div>\n";
3666                         print $_ while (<$fd>);
3667                         close $fd;
3668                 }
3669         }
3670
3671         # we need to request one more than 16 (0..15) to check if
3672         # those 16 are all
3673         my @commitlist = $head ? parse_commits($head, 17) : ();
3674         if (@commitlist) {
3675                 git_print_header_div('shortlog');
3676                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3677                                   $#commitlist <=  15 ? undef :
3678                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3679         }
3680
3681         if (@taglist) {
3682                 git_print_header_div('tags');
3683                 git_tags_body(\@taglist, 0, 15,
3684                               $#taglist <=  15 ? undef :
3685                               $cgi->a({-href => href(action=>"tags")}, "..."));
3686         }
3687
3688         if (@headlist) {
3689                 git_print_header_div('heads');
3690                 git_heads_body(\@headlist, $head, 0, 15,
3691                                $#headlist <= 15 ? undef :
3692                                $cgi->a({-href => href(action=>"heads")}, "..."));
3693         }
3694
3695         if (@forklist) {
3696                 git_print_header_div('forks');
3697                 git_project_list_body(\@forklist, undef, 0, 15,
3698                                       $#forklist <= 15 ? undef :
3699                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3700                                       'noheader');
3701         }
3702
3703         git_footer_html();
3704 }
3705
3706 sub git_tag {
3707         my $head = git_get_head_hash($project);
3708         git_header_html();
3709         git_print_page_nav('','', $head,undef,$head);
3710         my %tag = parse_tag($hash);
3711
3712         if (! %tag) {
3713                 die_error(undef, "Unknown tag object");
3714         }
3715
3716         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3717         print "<div class=\"title_text\">\n" .
3718               "<table cellspacing=\"0\">\n" .
3719               "<tr>\n" .
3720               "<td>object</td>\n" .
3721               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3722                                $tag{'object'}) . "</td>\n" .
3723               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3724                                               $tag{'type'}) . "</td>\n" .
3725               "</tr>\n";
3726         if (defined($tag{'author'})) {
3727                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3728                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3729                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3730                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3731                         "</td></tr>\n";
3732         }
3733         print "</table>\n\n" .
3734               "</div>\n";
3735         print "<div class=\"page_body\">";
3736         my $comment = $tag{'comment'};
3737         foreach my $line (@$comment) {
3738                 chomp $line;
3739                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3740         }
3741         print "</div>\n";
3742         git_footer_html();
3743 }
3744
3745 sub git_blame2 {
3746         my $fd;
3747         my $ftype;
3748
3749         my ($have_blame) = gitweb_check_feature('blame');
3750         if (!$have_blame) {
3751                 die_error('403 Permission denied', "Permission denied");
3752         }
3753         die_error('404 Not Found', "File name not defined") if (!$file_name);
3754         $hash_base ||= git_get_head_hash($project);
3755         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3756         my %co = parse_commit($hash_base)
3757                 or die_error(undef, "Reading commit failed");
3758         if (!defined $hash) {
3759                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3760                         or die_error(undef, "Error looking up file");
3761         }
3762         $ftype = git_get_type($hash);
3763         if ($ftype !~ "blob") {
3764                 die_error('400 Bad Request', "Object is not a blob");
3765         }
3766         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3767               $file_name, $hash_base)
3768                 or die_error(undef, "Open git-blame failed");
3769         git_header_html();
3770         my $formats_nav =
3771                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3772                         "blob") .
3773                 " | " .
3774                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3775                         "history") .
3776                 " | " .
3777                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3778                         "HEAD");
3779         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3780         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3781         git_print_page_path($file_name, $ftype, $hash_base);
3782         my @rev_color = (qw(light2 dark2));
3783         my $num_colors = scalar(@rev_color);
3784         my $current_color = 0;
3785         my $last_rev;
3786         print <<HTML;
3787 <div class="page_body">
3788 <table class="blame">
3789 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3790 HTML
3791         my %metainfo = ();
3792         while (1) {
3793                 $_ = <$fd>;
3794                 last unless defined $_;
3795                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3796                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3797                 if (!exists $metainfo{$full_rev}) {
3798                         $metainfo{$full_rev} = {};
3799                 }
3800                 my $meta = $metainfo{$full_rev};
3801                 while (<$fd>) {
3802                         last if (s/^\t//);
3803                         if (/^(\S+) (.*)$/) {
3804                                 $meta->{$1} = $2;
3805                         }
3806                 }
3807                 my $data = $_;
3808                 chomp $data;
3809                 my $rev = substr($full_rev, 0, 8);
3810                 my $author = $meta->{'author'};
3811                 my %date = parse_date($meta->{'author-time'},
3812                                       $meta->{'author-tz'});
3813                 my $date = $date{'iso-tz'};
3814                 if ($group_size) {
3815                         $current_color = ++$current_color % $num_colors;
3816                 }
3817                 print "<tr class=\"$rev_color[$current_color]\">\n";
3818                 if ($group_size) {
3819                         print "<td class=\"sha1\"";
3820                         print " title=\"". esc_html($author) . ", $date\"";
3821                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3822                         print ">";
3823                         print $cgi->a({-href => href(action=>"commit",
3824                                                      hash=>$full_rev,
3825                                                      file_name=>$file_name)},
3826                                       esc_html($rev));
3827                         print "</td>\n";
3828                 }
3829                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3830                         or die_error(undef, "Open git-rev-parse failed");
3831                 my $parent_commit = <$dd>;
3832                 close $dd;
3833                 chomp($parent_commit);
3834                 my $blamed = href(action => 'blame',
3835                                   file_name => $meta->{'filename'},
3836                                   hash_base => $parent_commit);
3837                 print "<td class=\"linenr\">";
3838                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3839                                 -id => "l$lineno",
3840                                 -class => "linenr" },
3841                               esc_html($lineno));
3842                 print "</td>";
3843                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3844                 print "</tr>\n";
3845         }
3846         print "</table>\n";
3847         print "</div>";
3848         close $fd
3849                 or print "Reading blob failed\n";
3850         git_footer_html();
3851 }
3852
3853 sub git_blame {
3854         my $fd;
3855
3856         my ($have_blame) = gitweb_check_feature('blame');
3857         if (!$have_blame) {
3858                 die_error('403 Permission denied', "Permission denied");
3859         }
3860         die_error('404 Not Found', "File name not defined") if (!$file_name);
3861         $hash_base ||= git_get_head_hash($project);
3862         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3863         my %co = parse_commit($hash_base)
3864                 or die_error(undef, "Reading commit failed");
3865         if (!defined $hash) {
3866                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3867                         or die_error(undef, "Error lookup file");
3868         }
3869         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3870                 or die_error(undef, "Open git-annotate failed");
3871         git_header_html();
3872         my $formats_nav =
3873                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3874                         "blob") .
3875                 " | " .
3876                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3877                         "history") .
3878                 " | " .
3879                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3880                         "HEAD");
3881         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3882         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3883         git_print_page_path($file_name, 'blob', $hash_base);
3884         print "<div class=\"page_body\">\n";
3885         print <<HTML;
3886 <table class="blame">
3887   <tr>
3888     <th>Commit</th>
3889     <th>Age</th>
3890     <th>Author</th>
3891     <th>Line</th>
3892     <th>Data</th>
3893   </tr>
3894 HTML
3895         my @line_class = (qw(light dark));
3896         my $line_class_len = scalar (@line_class);
3897         my $line_class_num = $#line_class;
3898         while (my $line = <$fd>) {
3899                 my $long_rev;
3900                 my $short_rev;
3901                 my $author;
3902                 my $time;
3903                 my $lineno;
3904                 my $data;
3905                 my $age;
3906                 my $age_str;
3907                 my $age_class;
3908
3909                 chomp $line;
3910                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3911
3912                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3913                         $long_rev = $1;
3914                         $author   = $2;
3915                         $time     = $3;
3916                         $lineno   = $4;
3917                         $data     = $5;
3918                 } else {
3919                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3920                         next;
3921                 }
3922                 $short_rev  = substr ($long_rev, 0, 8);
3923                 $age        = time () - $time;
3924                 $age_str    = age_string ($age);
3925                 $age_str    =~ s/ /&nbsp;/g;
3926                 $age_class  = age_class($age);
3927                 $author     = esc_html ($author);
3928                 $author     =~ s/ /&nbsp;/g;
3929
3930                 $data = untabify($data);
3931                 $data = esc_html ($data);
3932
3933                 print <<HTML;
3934   <tr class="$line_class[$line_class_num]">
3935     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3936     <td class="$age_class">$age_str</td>
3937     <td>$author</td>
3938     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3939     <td class="pre">$data</td>
3940   </tr>
3941 HTML
3942         } # while (my $line = <$fd>)
3943         print "</table>\n\n";
3944         close $fd
3945                 or print "Reading blob failed.\n";
3946         print "</div>";
3947         git_footer_html();
3948 }
3949
3950 sub git_tags {
3951         my $head = git_get_head_hash($project);
3952         git_header_html();
3953         git_print_page_nav('','', $head,undef,$head);
3954         git_print_header_div('summary', $project);
3955
3956         my @tagslist = git_get_tags_list();
3957         if (@tagslist) {
3958                 git_tags_body(\@tagslist);
3959         }
3960         git_footer_html();
3961 }
3962
3963 sub git_heads {
3964         my $head = git_get_head_hash($project);
3965         git_header_html();
3966         git_print_page_nav('','', $head,undef,$head);
3967         git_print_header_div('summary', $project);
3968
3969         my @headslist = git_get_heads_list();
3970         if (@headslist) {
3971                 git_heads_body(\@headslist, $head);
3972         }
3973         git_footer_html();
3974 }
3975
3976 sub git_blob_plain {
3977         my $expires;
3978
3979         if (!defined $hash) {
3980                 if (defined $file_name) {
3981                         my $base = $hash_base || git_get_head_hash($project);
3982                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3983                                 or die_error(undef, "Error lookup file");
3984                 } else {
3985                         die_error(undef, "No file name defined");
3986                 }
3987         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3988                 # blobs defined by non-textual hash id's can be cached
3989                 $expires = "+1d";
3990         }
3991
3992         my $type = shift;
3993         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3994                 or die_error(undef, "Couldn't cat $file_name, $hash");
3995
3996         $type ||= blob_mimetype($fd, $file_name);
3997
3998         # save as filename, even when no $file_name is given
3999         my $save_as = "$hash";
4000         if (defined $file_name) {
4001                 $save_as = $file_name;
4002         } elsif ($type =~ m/^text\//) {
4003                 $save_as .= '.txt';
4004         }
4005
4006         print $cgi->header(
4007                 -type => "$type",
4008                 -expires=>$expires,
4009                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4010         undef $/;
4011         binmode STDOUT, ':raw';
4012         print <$fd>;
4013         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4014         $/ = "\n";
4015         close $fd;
4016 }
4017
4018 sub git_blob {
4019         my $expires;
4020
4021         if (!defined $hash) {
4022                 if (defined $file_name) {
4023                         my $base = $hash_base || git_get_head_hash($project);
4024                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4025                                 or die_error(undef, "Error lookup file");
4026                 } else {
4027                         die_error(undef, "No file name defined");
4028                 }
4029         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4030                 # blobs defined by non-textual hash id's can be cached
4031                 $expires = "+1d";
4032         }
4033
4034         my ($have_blame) = gitweb_check_feature('blame');
4035         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4036                 or die_error(undef, "Couldn't cat $file_name, $hash");
4037         my $mimetype = blob_mimetype($fd, $file_name);
4038         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4039                 close $fd;
4040                 return git_blob_plain($mimetype);
4041         }
4042         # we can have blame only for text/* mimetype
4043         $have_blame &&= ($mimetype =~ m!^text/!);
4044
4045         git_header_html(undef, $expires);
4046         my $formats_nav = '';
4047         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4048                 if (defined $file_name) {
4049                         if ($have_blame) {
4050                                 $formats_nav .=
4051                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4052                                                                hash=>$hash, file_name=>$file_name)},
4053                                                 "blame") .
4054                                         " | ";
4055                         }
4056                         $formats_nav .=
4057                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4058                                                        hash=>$hash, file_name=>$file_name)},
4059                                         "history") .
4060                                 " | " .
4061                                 $cgi->a({-href => href(action=>"blob_plain",
4062                                                        hash=>$hash, file_name=>$file_name)},
4063                                         "raw") .
4064                                 " | " .
4065                                 $cgi->a({-href => href(action=>"blob",
4066                                                        hash_base=>"HEAD", file_name=>$file_name)},
4067                                         "HEAD");
4068                 } else {
4069                         $formats_nav .=
4070                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4071                 }
4072                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4073                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4074         } else {
4075                 print "<div class=\"page_nav\">\n" .
4076                       "<br/><br/></div>\n" .
4077                       "<div class=\"title\">$hash</div>\n";
4078         }
4079         git_print_page_path($file_name, "blob", $hash_base);
4080         print "<div class=\"page_body\">\n";
4081         if ($mimetype =~ m!^text/!) {
4082                 my $nr;
4083                 while (my $line = <$fd>) {
4084                         chomp $line;
4085                         $nr++;
4086                         $line = untabify($line);
4087                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4088                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4089                 }
4090         } elsif ($mimetype =~ m!^image/!) {
4091                 print qq!<img type="$mimetype"!;
4092                 if ($file_name) {
4093                         print qq! alt="$file_name" title="$file_name"!;
4094                 }
4095                 print qq! src="! .
4096                       href(action=>"blob_plain", hash=>$hash,
4097                            hash_base=>$hash_base, file_name=>$file_name) .
4098                       qq!" />\n!;
4099         }
4100         close $fd
4101                 or print "Reading blob failed.\n";
4102         print "</div>";
4103         git_footer_html();
4104 }
4105
4106 sub git_tree {
4107         my $have_snapshot = gitweb_have_snapshot();
4108
4109         if (!defined $hash_base) {
4110                 $hash_base = "HEAD";
4111         }
4112         if (!defined $hash) {
4113                 if (defined $file_name) {
4114                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4115                 } else {
4116                         $hash = $hash_base;
4117                 }
4118         }
4119         $/ = "\0";
4120         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4121                 or die_error(undef, "Open git-ls-tree failed");
4122         my @entries = map { chomp; $_ } <$fd>;
4123         close $fd or die_error(undef, "Reading tree failed");
4124         $/ = "\n";
4125
4126         my $refs = git_get_references();
4127         my $ref = format_ref_marker($refs, $hash_base);
4128         git_header_html();
4129         my $basedir = '';
4130         my ($have_blame) = gitweb_check_feature('blame');
4131         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4132                 my @views_nav = ();
4133                 if (defined $file_name) {
4134                         push @views_nav,
4135                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4136                                                        hash=>$hash, file_name=>$file_name)},
4137                                         "history"),
4138                                 $cgi->a({-href => href(action=>"tree",
4139                                                        hash_base=>"HEAD", file_name=>$file_name)},
4140                                         "HEAD"),
4141                 }
4142                 if ($have_snapshot) {
4143                         # FIXME: Should be available when we have no hash base as well.
4144                         push @views_nav,
4145                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4146                                         "snapshot");
4147                 }
4148                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4149                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4150         } else {
4151                 undef $hash_base;
4152                 print "<div class=\"page_nav\">\n";
4153                 print "<br/><br/></div>\n";
4154                 print "<div class=\"title\">$hash</div>\n";
4155         }
4156         if (defined $file_name) {
4157                 $basedir = $file_name;
4158                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4159                         $basedir .= '/';
4160                 }
4161         }
4162         git_print_page_path($file_name, 'tree', $hash_base);
4163         print "<div class=\"page_body\">\n";
4164         print "<table cellspacing=\"0\">\n";
4165         my $alternate = 1;
4166         # '..' (top directory) link if possible
4167         if (defined $hash_base &&
4168             defined $file_name && $file_name =~ m![^/]+$!) {
4169                 if ($alternate) {
4170                         print "<tr class=\"dark\">\n";
4171                 } else {
4172                         print "<tr class=\"light\">\n";
4173                 }
4174                 $alternate ^= 1;
4175
4176                 my $up = $file_name;
4177                 $up =~ s!/?[^/]+$!!;
4178                 undef $up unless $up;
4179                 # based on git_print_tree_entry
4180                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4181                 print '<td class="list">';
4182                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4183                                              file_name=>$up)},
4184                               "..");
4185                 print "</td>\n";
4186                 print "<td class=\"link\"></td>\n";
4187
4188                 print "</tr>\n";
4189         }
4190         foreach my $line (@entries) {
4191                 my %t = parse_ls_tree_line($line, -z => 1);
4192
4193                 if ($alternate) {
4194                         print "<tr class=\"dark\">\n";
4195                 } else {
4196                         print "<tr class=\"light\">\n";
4197                 }
4198                 $alternate ^= 1;
4199
4200                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4201
4202                 print "</tr>\n";
4203         }
4204         print "</table>\n" .
4205               "</div>";
4206         git_footer_html();
4207 }
4208
4209 sub git_snapshot {
4210         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4211         my $have_snapshot = (defined $ctype && defined $suffix);
4212         if (!$have_snapshot) {
4213                 die_error('403 Permission denied', "Permission denied");
4214         }
4215
4216         if (!defined $hash) {
4217                 $hash = git_get_head_hash($project);
4218         }
4219
4220         my $git = git_cmd_str();
4221         my $name = $project;
4222         $name =~ s,([^/])/*\.git$,$1,;
4223         $name = basename($name);
4224         my $filename = to_utf8($name);
4225         $name =~ s/\047/\047\\\047\047/g;
4226         my $cmd;
4227         if ($suffix eq 'zip') {
4228                 $filename .= "-$hash.$suffix";
4229                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4230         } else {
4231                 $filename .= "-$hash.tar.$suffix";
4232                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4233         }
4234
4235         print $cgi->header(
4236                 -type => "application/$ctype",
4237                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4238                 -status => '200 OK');
4239
4240         open my $fd, "-|", $cmd
4241                 or die_error(undef, "Execute git-archive failed");
4242         binmode STDOUT, ':raw';
4243         print <$fd>;
4244         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4245         close $fd;
4246
4247 }
4248
4249 sub git_log {
4250         my $head = git_get_head_hash($project);
4251         if (!defined $hash) {
4252                 $hash = $head;
4253         }
4254         if (!defined $page) {
4255                 $page = 0;
4256         }
4257         my $refs = git_get_references();
4258
4259         my @commitlist = parse_commits($hash, 101, (100 * $page));
4260
4261         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4262
4263         git_header_html();
4264         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4265
4266         if (!@commitlist) {
4267                 my %co = parse_commit($hash);
4268
4269                 git_print_header_div('summary', $project);
4270                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4271         }
4272         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4273         for (my $i = 0; $i <= $to; $i++) {
4274                 my %co = %{$commitlist[$i]};
4275                 next if !%co;
4276                 my $commit = $co{'id'};
4277                 my $ref = format_ref_marker($refs, $commit);
4278                 my %ad = parse_date($co{'author_epoch'});
4279                 git_print_header_div('commit',
4280                                "<span class=\"age\">$co{'age_string'}</span>" .
4281                                esc_html($co{'title'}) . $ref,
4282                                $commit);
4283                 print "<div class=\"title_text\">\n" .
4284                       "<div class=\"log_link\">\n" .
4285                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4286                       " | " .
4287                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4288                       " | " .
4289                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4290                       "<br/>\n" .
4291                       "</div>\n" .
4292                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4293                       "</div>\n";
4294
4295                 print "<div class=\"log_body\">\n";
4296                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4297                 print "</div>\n";
4298         }
4299         if ($#commitlist >= 100) {
4300                 print "<div class=\"page_nav\">\n";
4301                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4302                                -accesskey => "n", -title => "Alt-n"}, "next");
4303                 print "</div>\n";
4304         }
4305         git_footer_html();
4306 }
4307
4308 sub git_commit {
4309         $hash ||= $hash_base || "HEAD";
4310         my %co = parse_commit($hash);
4311         if (!%co) {
4312                 die_error(undef, "Unknown commit object");
4313         }
4314         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4315         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4316
4317         my $parent  = $co{'parent'};
4318         my $parents = $co{'parents'}; # listref
4319
4320         # we need to prepare $formats_nav before any parameter munging
4321         my $formats_nav;
4322         if (!defined $parent) {
4323                 # --root commitdiff
4324                 $formats_nav .= '(initial)';
4325         } elsif (@$parents == 1) {
4326                 # single parent commit
4327                 $formats_nav .=
4328                         '(parent: ' .
4329                         $cgi->a({-href => href(action=>"commit",
4330                                                hash=>$parent)},
4331                                 esc_html(substr($parent, 0, 7))) .
4332                         ')';
4333         } else {
4334                 # merge commit
4335                 $formats_nav .=
4336                         '(merge: ' .
4337                         join(' ', map {
4338                                 $cgi->a({-href => href(action=>"commit",
4339                                                        hash=>$_)},
4340                                         esc_html(substr($_, 0, 7)));
4341                         } @$parents ) .
4342                         ')';
4343         }
4344
4345         if (!defined $parent) {
4346                 $parent = "--root";
4347         }
4348         my @difftree;
4349         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4350                 @diff_opts,
4351                 (@$parents <= 1 ? $parent : '-c'),
4352                 $hash, "--"
4353                 or die_error(undef, "Open git-diff-tree failed");
4354         @difftree = map { chomp; $_ } <$fd>;
4355         close $fd or die_error(undef, "Reading git-diff-tree failed");
4356
4357         # non-textual hash id's can be cached
4358         my $expires;
4359         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4360                 $expires = "+1d";
4361         }
4362         my $refs = git_get_references();
4363         my $ref = format_ref_marker($refs, $co{'id'});
4364
4365         my $have_snapshot = gitweb_have_snapshot();
4366
4367         git_header_html(undef, $expires);
4368         git_print_page_nav('commit', '',
4369                            $hash, $co{'tree'}, $hash,
4370                            $formats_nav);
4371
4372         if (defined $co{'parent'}) {
4373                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4374         } else {
4375                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4376         }
4377         print "<div class=\"title_text\">\n" .
4378               "<table cellspacing=\"0\">\n";
4379         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4380               "<tr>" .
4381               "<td></td><td> $ad{'rfc2822'}";
4382         if ($ad{'hour_local'} < 6) {
4383                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4384                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4385         } else {
4386                 printf(" (%02d:%02d %s)",
4387                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4388         }
4389         print "</td>" .
4390               "</tr>\n";
4391         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4392         print "<tr><td></td><td> $cd{'rfc2822'}" .
4393               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4394               "</td></tr>\n";
4395         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4396         print "<tr>" .
4397               "<td>tree</td>" .
4398               "<td class=\"sha1\">" .
4399               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4400                        class => "list"}, $co{'tree'}) .
4401               "</td>" .
4402               "<td class=\"link\">" .
4403               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4404                       "tree");
4405         if ($have_snapshot) {
4406                 print " | " .
4407                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4408         }
4409         print "</td>" .
4410               "</tr>\n";
4411
4412         foreach my $par (@$parents) {
4413                 print "<tr>" .
4414                       "<td>parent</td>" .
4415                       "<td class=\"sha1\">" .
4416                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4417                                class => "list"}, $par) .
4418                       "</td>" .
4419                       "<td class=\"link\">" .
4420                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4421                       " | " .
4422                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4423                       "</td>" .
4424                       "</tr>\n";
4425         }
4426         print "</table>".
4427               "</div>\n";
4428
4429         print "<div class=\"page_body\">\n";
4430         git_print_log($co{'comment'});
4431         print "</div>\n";
4432
4433         git_difftree_body(\@difftree, $hash, @$parents);
4434
4435         git_footer_html();
4436 }
4437
4438 sub git_object {
4439         # object is defined by:
4440         # - hash or hash_base alone
4441         # - hash_base and file_name
4442         my $type;
4443
4444         # - hash or hash_base alone
4445         if ($hash || ($hash_base && !defined $file_name)) {
4446                 my $object_id = $hash || $hash_base;
4447
4448                 my $git_command = git_cmd_str();
4449                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4450                         or die_error('404 Not Found', "Object does not exist");
4451                 $type = <$fd>;
4452                 chomp $type;
4453                 close $fd
4454                         or die_error('404 Not Found', "Object does not exist");
4455
4456         # - hash_base and file_name
4457         } elsif ($hash_base && defined $file_name) {
4458                 $file_name =~ s,/+$,,;
4459
4460                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4461                         or die_error('404 Not Found', "Base object does not exist");
4462
4463                 # here errors should not hapen
4464                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4465                         or die_error(undef, "Open git-ls-tree failed");
4466                 my $line = <$fd>;
4467                 close $fd;
4468
4469                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4470                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4471                         die_error('404 Not Found', "File or directory for given base does not exist");
4472                 }
4473                 $type = $2;
4474                 $hash = $3;
4475         } else {
4476                 die_error('404 Not Found', "Not enough information to find object");
4477         }
4478
4479         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4480                                           hash=>$hash, hash_base=>$hash_base,
4481                                           file_name=>$file_name),
4482                              -status => '302 Found');
4483 }
4484
4485 sub git_blobdiff {
4486         my $format = shift || 'html';
4487
4488         my $fd;
4489         my @difftree;
4490         my %diffinfo;
4491         my $expires;
4492
4493         # preparing $fd and %diffinfo for git_patchset_body
4494         # new style URI
4495         if (defined $hash_base && defined $hash_parent_base) {
4496                 if (defined $file_name) {
4497                         # read raw output
4498                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4499                                 $hash_parent_base, $hash_base,
4500                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4501                                 or die_error(undef, "Open git-diff-tree failed");
4502                         @difftree = map { chomp; $_ } <$fd>;
4503                         close $fd
4504                                 or die_error(undef, "Reading git-diff-tree failed");
4505                         @difftree
4506                                 or die_error('404 Not Found', "Blob diff not found");
4507
4508                 } elsif (defined $hash &&
4509                          $hash =~ /[0-9a-fA-F]{40}/) {
4510                         # try to find filename from $hash
4511
4512                         # read filtered raw output
4513                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4514                                 $hash_parent_base, $hash_base, "--"
4515                                 or die_error(undef, "Open git-diff-tree failed");
4516                         @difftree =
4517                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4518                                 # $hash == to_id
4519                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4520                                 map { chomp; $_ } <$fd>;
4521                         close $fd
4522                                 or die_error(undef, "Reading git-diff-tree failed");
4523                         @difftree
4524                                 or die_error('404 Not Found', "Blob diff not found");
4525
4526                 } else {
4527                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4528                 }
4529
4530                 if (@difftree > 1) {
4531                         die_error('404 Not Found', "Ambiguous blob diff specification");
4532                 }
4533
4534                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4535                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4536                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4537
4538                 $hash_parent ||= $diffinfo{'from_id'};
4539                 $hash        ||= $diffinfo{'to_id'};
4540
4541                 # non-textual hash id's can be cached
4542                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4543                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4544                         $expires = '+1d';
4545                 }
4546
4547                 # open patch output
4548                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4549                         '-p', ($format eq 'html' ? "--full-index" : ()),
4550                         $hash_parent_base, $hash_base,
4551                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4552                         or die_error(undef, "Open git-diff-tree failed");
4553         }
4554
4555         # old/legacy style URI
4556         if (!%diffinfo && # if new style URI failed
4557             defined $hash && defined $hash_parent) {
4558                 # fake git-diff-tree raw output
4559                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4560                 $diffinfo{'from_id'} = $hash_parent;
4561                 $diffinfo{'to_id'}   = $hash;
4562                 if (defined $file_name) {
4563                         if (defined $file_parent) {
4564                                 $diffinfo{'status'} = '2';
4565                                 $diffinfo{'from_file'} = $file_parent;
4566                                 $diffinfo{'to_file'}   = $file_name;
4567                         } else { # assume not renamed
4568                                 $diffinfo{'status'} = '1';
4569                                 $diffinfo{'from_file'} = $file_name;
4570                                 $diffinfo{'to_file'}   = $file_name;
4571                         }
4572                 } else { # no filename given
4573                         $diffinfo{'status'} = '2';
4574                         $diffinfo{'from_file'} = $hash_parent;
4575                         $diffinfo{'to_file'}   = $hash;
4576                 }
4577
4578                 # non-textual hash id's can be cached
4579                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4580                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4581                         $expires = '+1d';
4582                 }
4583
4584                 # open patch output
4585                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4586                         '-p', ($format eq 'html' ? "--full-index" : ()),
4587                         $hash_parent, $hash, "--"
4588                         or die_error(undef, "Open git-diff failed");
4589         } else  {
4590                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4591                         unless %diffinfo;
4592         }
4593
4594         # header
4595         if ($format eq 'html') {
4596                 my $formats_nav =
4597                         $cgi->a({-href => href(action=>"blobdiff_plain",
4598                                                hash=>$hash, hash_parent=>$hash_parent,
4599                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4600                                                file_name=>$file_name, file_parent=>$file_parent)},
4601                                 "raw");
4602                 git_header_html(undef, $expires);
4603                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4604                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4605                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4606                 } else {
4607                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4608                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4609                 }
4610                 if (defined $file_name) {
4611                         git_print_page_path($file_name, "blob", $hash_base);
4612                 } else {
4613                         print "<div class=\"page_path\"></div>\n";
4614                 }
4615
4616         } elsif ($format eq 'plain') {
4617                 print $cgi->header(
4618                         -type => 'text/plain',
4619                         -charset => 'utf-8',
4620                         -expires => $expires,
4621                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4622
4623                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4624
4625         } else {
4626                 die_error(undef, "Unknown blobdiff format");
4627         }
4628
4629         # patch
4630         if ($format eq 'html') {
4631                 print "<div class=\"page_body\">\n";
4632
4633                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4634                 close $fd;
4635
4636                 print "</div>\n"; # class="page_body"
4637                 git_footer_html();
4638
4639         } else {
4640                 while (my $line = <$fd>) {
4641                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4642                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4643
4644                         print $line;
4645
4646                         last if $line =~ m!^\+\+\+!;
4647                 }
4648                 local $/ = undef;
4649                 print <$fd>;
4650                 close $fd;
4651         }
4652 }
4653
4654 sub git_blobdiff_plain {
4655         git_blobdiff('plain');
4656 }
4657
4658 sub git_commitdiff {
4659         my $format = shift || 'html';
4660         $hash ||= $hash_base || "HEAD";
4661         my %co = parse_commit($hash);
4662         if (!%co) {
4663                 die_error(undef, "Unknown commit object");
4664         }
4665
4666         # choose format for commitdiff for merge
4667         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4668                 $hash_parent = '--cc';
4669         }
4670         # we need to prepare $formats_nav before almost any parameter munging
4671         my $formats_nav;
4672         if ($format eq 'html') {
4673                 $formats_nav =
4674                         $cgi->a({-href => href(action=>"commitdiff_plain",
4675                                                hash=>$hash, hash_parent=>$hash_parent)},
4676                                 "raw");
4677
4678                 if (defined $hash_parent &&
4679                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4680                         # commitdiff with two commits given
4681                         my $hash_parent_short = $hash_parent;
4682                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4683                                 $hash_parent_short = substr($hash_parent, 0, 7);
4684                         }
4685                         $formats_nav .=
4686                                 ' (from';
4687                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4688                                 if ($co{'parents'}[$i] eq $hash_parent) {
4689                                         $formats_nav .= ' parent ' . ($i+1);
4690                                         last;
4691                                 }
4692                         }
4693                         $formats_nav .= ': ' .
4694                                 $cgi->a({-href => href(action=>"commitdiff",
4695                                                        hash=>$hash_parent)},
4696                                         esc_html($hash_parent_short)) .
4697                                 ')';
4698                 } elsif (!$co{'parent'}) {
4699                         # --root commitdiff
4700                         $formats_nav .= ' (initial)';
4701                 } elsif (scalar @{$co{'parents'}} == 1) {
4702                         # single parent commit
4703                         $formats_nav .=
4704                                 ' (parent: ' .
4705                                 $cgi->a({-href => href(action=>"commitdiff",
4706                                                        hash=>$co{'parent'})},
4707                                         esc_html(substr($co{'parent'}, 0, 7))) .
4708                                 ')';
4709                 } else {
4710                         # merge commit
4711                         if ($hash_parent eq '--cc') {
4712                                 $formats_nav .= ' | ' .
4713                                         $cgi->a({-href => href(action=>"commitdiff",
4714                                                                hash=>$hash, hash_parent=>'-c')},
4715                                                 'combined');
4716                         } else { # $hash_parent eq '-c'
4717                                 $formats_nav .= ' | ' .
4718                                         $cgi->a({-href => href(action=>"commitdiff",
4719                                                                hash=>$hash, hash_parent=>'--cc')},
4720                                                 'compact');
4721                         }
4722                         $formats_nav .=
4723                                 ' (merge: ' .
4724                                 join(' ', map {
4725                                         $cgi->a({-href => href(action=>"commitdiff",
4726                                                                hash=>$_)},
4727                                                 esc_html(substr($_, 0, 7)));
4728                                 } @{$co{'parents'}} ) .
4729                                 ')';
4730                 }
4731         }
4732
4733         my $hash_parent_param = $hash_parent;
4734         if (!defined $hash_parent_param) {
4735                 # --cc for multiple parents, --root for parentless
4736                 $hash_parent_param =
4737                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4738         }
4739
4740         # read commitdiff
4741         my $fd;
4742         my @difftree;
4743         if ($format eq 'html') {
4744                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4745                         "--no-commit-id", "--patch-with-raw", "--full-index",
4746                         $hash_parent_param, $hash, "--"
4747                         or die_error(undef, "Open git-diff-tree failed");
4748
4749                 while (my $line = <$fd>) {
4750                         chomp $line;
4751                         # empty line ends raw part of diff-tree output
4752                         last unless $line;
4753                         push @difftree, scalar parse_difftree_raw_line($line);
4754                 }
4755
4756         } elsif ($format eq 'plain') {
4757                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4758                         '-p', $hash_parent_param, $hash, "--"
4759                         or die_error(undef, "Open git-diff-tree failed");
4760
4761         } else {
4762                 die_error(undef, "Unknown commitdiff format");
4763         }
4764
4765         # non-textual hash id's can be cached
4766         my $expires;
4767         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4768                 $expires = "+1d";
4769         }
4770
4771         # write commit message
4772         if ($format eq 'html') {
4773                 my $refs = git_get_references();
4774                 my $ref = format_ref_marker($refs, $co{'id'});
4775
4776                 git_header_html(undef, $expires);
4777                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4778                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4779                 git_print_authorship(\%co);
4780                 print "<div class=\"page_body\">\n";
4781                 if (@{$co{'comment'}} > 1) {
4782                         print "<div class=\"log\">\n";
4783                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4784                         print "</div>\n"; # class="log"
4785                 }
4786
4787         } elsif ($format eq 'plain') {
4788                 my $refs = git_get_references("tags");
4789                 my $tagname = git_get_rev_name_tags($hash);
4790                 my $filename = basename($project) . "-$hash.patch";
4791
4792                 print $cgi->header(
4793                         -type => 'text/plain',
4794                         -charset => 'utf-8',
4795                         -expires => $expires,
4796                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4797                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4798                 print <<TEXT;
4799 From: $co{'author'}
4800 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4801 Subject: $co{'title'}
4802 TEXT
4803                 print "X-Git-Tag: $tagname\n" if $tagname;
4804                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4805
4806                 foreach my $line (@{$co{'comment'}}) {
4807                         print "$line\n";
4808                 }
4809                 print "---\n\n";
4810         }
4811
4812         # write patch
4813         if ($format eq 'html') {
4814                 my $use_parents = !defined $hash_parent ||
4815                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4816                 git_difftree_body(\@difftree, $hash,
4817                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4818                 print "<br/>\n";
4819
4820                 git_patchset_body($fd, \@difftree, $hash,
4821                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4822                 close $fd;
4823                 print "</div>\n"; # class="page_body"
4824                 git_footer_html();
4825
4826         } elsif ($format eq 'plain') {
4827                 local $/ = undef;
4828                 print <$fd>;
4829                 close $fd
4830                         or print "Reading git-diff-tree failed\n";
4831         }
4832 }
4833
4834 sub git_commitdiff_plain {
4835         git_commitdiff('plain');
4836 }
4837
4838 sub git_history {
4839         if (!defined $hash_base) {
4840                 $hash_base = git_get_head_hash($project);
4841         }
4842         if (!defined $page) {
4843                 $page = 0;
4844         }
4845         my $ftype;
4846         my %co = parse_commit($hash_base);
4847         if (!%co) {
4848                 die_error(undef, "Unknown commit object");
4849         }
4850
4851         my $refs = git_get_references();
4852         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4853
4854         if (!defined $hash && defined $file_name) {
4855                 $hash = git_get_hash_by_path($hash_base, $file_name);
4856         }
4857         if (defined $hash) {
4858                 $ftype = git_get_type($hash);
4859         }
4860
4861         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4862
4863         my $paging_nav = '';
4864         if ($page > 0) {
4865                 $paging_nav .=
4866                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4867                                                file_name=>$file_name)},
4868                                 "first");
4869                 $paging_nav .= " &sdot; " .
4870                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4871                                                file_name=>$file_name, page=>$page-1),
4872                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4873         } else {
4874                 $paging_nav .= "first";
4875                 $paging_nav .= " &sdot; prev";
4876         }
4877         if ($#commitlist >= 100) {
4878                 $paging_nav .= " &sdot; " .
4879                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4880                                                file_name=>$file_name, page=>$page+1),
4881                                  -accesskey => "n", -title => "Alt-n"}, "next");
4882         } else {
4883                 $paging_nav .= " &sdot; next";
4884         }
4885         my $next_link = '';
4886         if ($#commitlist >= 100) {
4887                 $next_link =
4888                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4889                                                file_name=>$file_name, page=>$page+1),
4890                                  -accesskey => "n", -title => "Alt-n"}, "next");
4891         }
4892
4893         git_header_html();
4894         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4895         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4896         git_print_page_path($file_name, $ftype, $hash_base);
4897
4898         git_history_body(\@commitlist, 0, 99,
4899                          $refs, $hash_base, $ftype, $next_link);
4900
4901         git_footer_html();
4902 }
4903
4904 sub git_search {
4905         my ($have_search) = gitweb_check_feature('search');
4906         if (!$have_search) {
4907                 die_error('403 Permission denied', "Permission denied");
4908         }
4909         if (!defined $searchtext) {
4910                 die_error(undef, "Text field empty");
4911         }
4912         if (!defined $hash) {
4913                 $hash = git_get_head_hash($project);
4914         }
4915         my %co = parse_commit($hash);
4916         if (!%co) {
4917                 die_error(undef, "Unknown commit object");
4918         }
4919         if (!defined $page) {
4920                 $page = 0;
4921         }
4922
4923         $searchtype ||= 'commit';
4924         if ($searchtype eq 'pickaxe') {
4925                 # pickaxe may take all resources of your box and run for several minutes
4926                 # with every query - so decide by yourself how public you make this feature
4927                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4928                 if (!$have_pickaxe) {
4929                         die_error('403 Permission denied', "Permission denied");
4930                 }
4931         }
4932         if ($searchtype eq 'grep') {
4933                 my ($have_grep) = gitweb_check_feature('grep');
4934                 if (!$have_grep) {
4935                         die_error('403 Permission denied', "Permission denied");
4936                 }
4937         }
4938
4939         git_header_html();
4940
4941         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4942                 my $greptype;
4943                 if ($searchtype eq 'commit') {
4944                         $greptype = "--grep=";
4945                 } elsif ($searchtype eq 'author') {
4946                         $greptype = "--author=";
4947                 } elsif ($searchtype eq 'committer') {
4948                         $greptype = "--committer=";
4949                 }
4950                 $greptype .= $search_regexp;
4951                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4952
4953                 my $paging_nav = '';
4954                 if ($page > 0) {
4955                         $paging_nav .=
4956                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4957                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4958                                         "first");
4959                         $paging_nav .= " &sdot; " .
4960                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4961                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4962                                                        page=>$page-1),
4963                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4964                 } else {
4965                         $paging_nav .= "first";
4966                         $paging_nav .= " &sdot; prev";
4967                 }
4968                 if ($#commitlist >= 100) {
4969                         $paging_nav .= " &sdot; " .
4970                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4971                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4972                                                        page=>$page+1),
4973                                          -accesskey => "n", -title => "Alt-n"}, "next");
4974                 } else {
4975                         $paging_nav .= " &sdot; next";
4976                 }
4977                 my $next_link = '';
4978                 if ($#commitlist >= 100) {
4979                         $next_link =
4980                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4981                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4982                                                        page=>$page+1),
4983                                          -accesskey => "n", -title => "Alt-n"}, "next");
4984                 }
4985
4986                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4987                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4988                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4989         }
4990
4991         if ($searchtype eq 'pickaxe') {
4992                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4993                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4994
4995                 print "<table cellspacing=\"0\">\n";
4996                 my $alternate = 1;
4997                 $/ = "\n";
4998                 my $git_command = git_cmd_str();
4999                 my $searchqtext = $searchtext;
5000                 $searchqtext =~ s/'/'\\''/;
5001                 open my $fd, "-|", "$git_command rev-list $hash | " .
5002                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5003                 undef %co;
5004                 my @files;
5005                 while (my $line = <$fd>) {
5006                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5007                                 my %set;
5008                                 $set{'file'} = $6;
5009                                 $set{'from_id'} = $3;
5010                                 $set{'to_id'} = $4;
5011                                 $set{'id'} = $set{'to_id'};
5012                                 if ($set{'id'} =~ m/0{40}/) {
5013                                         $set{'id'} = $set{'from_id'};
5014                                 }
5015                                 if ($set{'id'} =~ m/0{40}/) {
5016                                         next;
5017                                 }
5018                                 push @files, \%set;
5019                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5020                                 if (%co) {
5021                                         if ($alternate) {
5022                                                 print "<tr class=\"dark\">\n";
5023                                         } else {
5024                                                 print "<tr class=\"light\">\n";
5025                                         }
5026                                         $alternate ^= 1;
5027                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5028                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5029                                               "<td>" .
5030                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5031                                                       -class => "list subject"},
5032                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5033                                         while (my $setref = shift @files) {
5034                                                 my %set = %$setref;
5035                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5036                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5037                                                               -class => "list"},
5038                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5039                                                       "<br/>\n";
5040                                         }
5041                                         print "</td>\n" .
5042                                               "<td class=\"link\">" .
5043                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5044                                               " | " .
5045                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5046                                         print "</td>\n" .
5047                                               "</tr>\n";
5048                                 }
5049                                 %co = parse_commit($1);
5050                         }
5051                 }
5052                 close $fd;
5053
5054                 print "</table>\n";
5055         }
5056
5057         if ($searchtype eq 'grep') {
5058                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5059                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5060
5061                 print "<table cellspacing=\"0\">\n";
5062                 my $alternate = 1;
5063                 my $matches = 0;
5064                 $/ = "\n";
5065                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5066                 my $lastfile = '';
5067                 while (my $line = <$fd>) {
5068                         chomp $line;
5069                         my ($file, $lno, $ltext, $binary);
5070                         last if ($matches++ > 1000);
5071                         if ($line =~ /^Binary file (.+) matches$/) {
5072                                 $file = $1;
5073                                 $binary = 1;
5074                         } else {
5075                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5076                         }
5077                         if ($file ne $lastfile) {
5078                                 $lastfile and print "</td></tr>\n";
5079                                 if ($alternate++) {
5080                                         print "<tr class=\"dark\">\n";
5081                                 } else {
5082                                         print "<tr class=\"light\">\n";
5083                                 }
5084                                 print "<td class=\"list\">".
5085                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5086                                                                file_name=>"$file"),
5087                                                 -class => "list"}, esc_path($file));
5088                                 print "</td><td>\n";
5089                                 $lastfile = $file;
5090                         }
5091                         if ($binary) {
5092                                 print "<div class=\"binary\">Binary file</div>\n";
5093                         } else {
5094                                 $ltext = untabify($ltext);
5095                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5096                                         $ltext = esc_html($1, -nbsp=>1);
5097                                         $ltext .= '<span class="match">';
5098                                         $ltext .= esc_html($2, -nbsp=>1);
5099                                         $ltext .= '</span>';
5100                                         $ltext .= esc_html($3, -nbsp=>1);
5101                                 } else {
5102                                         $ltext = esc_html($ltext, -nbsp=>1);
5103                                 }
5104                                 print "<div class=\"pre\">" .
5105                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5106                                                                file_name=>"$file").'#l'.$lno,
5107                                                 -class => "linenr"}, sprintf('%4i', $lno))
5108                                         . ' ' .  $ltext . "</div>\n";
5109                         }
5110                 }
5111                 if ($lastfile) {
5112                         print "</td></tr>\n";
5113                         if ($matches > 1000) {
5114                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5115                         }
5116                 } else {
5117                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5118                 }
5119                 close $fd;
5120
5121                 print "</table>\n";
5122         }
5123         git_footer_html();
5124 }
5125
5126 sub git_search_help {
5127         git_header_html();
5128         git_print_page_nav('','', $hash,$hash,$hash);
5129         print <<EOT;
5130 <dl>
5131 <dt><b>commit</b></dt>
5132 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5133 EOT
5134         my ($have_grep) = gitweb_check_feature('grep');
5135         if ($have_grep) {
5136                 print <<EOT;
5137 <dt><b>grep</b></dt>
5138 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5139     a different one) are searched for the given
5140 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5141 (POSIX extended) and the matches are listed. On large
5142 trees, this search can take a while and put some strain on the server, so please use it with
5143 some consideration.</dd>
5144 EOT
5145         }
5146         print <<EOT;
5147 <dt><b>author</b></dt>
5148 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5149 <dt><b>committer</b></dt>
5150 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5151 EOT
5152         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5153         if ($have_pickaxe) {
5154                 print <<EOT;
5155 <dt><b>pickaxe</b></dt>
5156 <dd>All commits that caused the string to appear or disappear from any file (changes that
5157 added, removed or "modified" the string) will be listed. This search can take a while and
5158 takes a lot of strain on the server, so please use it wisely.</dd>
5159 EOT
5160         }
5161         print "</dl>\n";
5162         git_footer_html();
5163 }
5164
5165 sub git_shortlog {
5166         my $head = git_get_head_hash($project);
5167         if (!defined $hash) {
5168                 $hash = $head;
5169         }
5170         if (!defined $page) {
5171                 $page = 0;
5172         }
5173         my $refs = git_get_references();
5174
5175         my @commitlist = parse_commits($hash, 101, (100 * $page));
5176
5177         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5178         my $next_link = '';
5179         if ($#commitlist >= 100) {
5180                 $next_link =
5181                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5182                                  -accesskey => "n", -title => "Alt-n"}, "next");
5183         }
5184
5185         git_header_html();
5186         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5187         git_print_header_div('summary', $project);
5188
5189         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5190
5191         git_footer_html();
5192 }
5193
5194 ## ......................................................................
5195 ## feeds (RSS, Atom; OPML)
5196
5197 sub git_feed {
5198         my $format = shift || 'atom';
5199         my ($have_blame) = gitweb_check_feature('blame');
5200
5201         # Atom: http://www.atomenabled.org/developers/syndication/
5202         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5203         if ($format ne 'rss' && $format ne 'atom') {
5204                 die_error(undef, "Unknown web feed format");
5205         }
5206
5207         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5208         my $head = $hash || 'HEAD';
5209         my @commitlist = parse_commits($head, 150);
5210
5211         my %latest_commit;
5212         my %latest_date;
5213         my $content_type = "application/$format+xml";
5214         if (defined $cgi->http('HTTP_ACCEPT') &&
5215                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5216                 # browser (feed reader) prefers text/xml
5217                 $content_type = 'text/xml';
5218         }
5219         if (defined($commitlist[0])) {
5220                 %latest_commit = %{$commitlist[0]};
5221                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5222                 print $cgi->header(
5223                         -type => $content_type,
5224                         -charset => 'utf-8',
5225                         -last_modified => $latest_date{'rfc2822'});
5226         } else {
5227                 print $cgi->header(
5228                         -type => $content_type,
5229                         -charset => 'utf-8');
5230         }
5231
5232         # Optimization: skip generating the body if client asks only
5233         # for Last-Modified date.
5234         return if ($cgi->request_method() eq 'HEAD');
5235
5236         # header variables
5237         my $title = "$site_name - $project/$action";
5238         my $feed_type = 'log';
5239         if (defined $hash) {
5240                 $title .= " - '$hash'";
5241                 $feed_type = 'branch log';
5242                 if (defined $file_name) {
5243                         $title .= " :: $file_name";
5244                         $feed_type = 'history';
5245                 }
5246         } elsif (defined $file_name) {
5247                 $title .= " - $file_name";
5248                 $feed_type = 'history';
5249         }
5250         $title .= " $feed_type";
5251         my $descr = git_get_project_description($project);
5252         if (defined $descr) {
5253                 $descr = esc_html($descr);
5254         } else {
5255                 $descr = "$project " .
5256                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5257                          " feed";
5258         }
5259         my $owner = git_get_project_owner($project);
5260         $owner = esc_html($owner);
5261
5262         #header
5263         my $alt_url;
5264         if (defined $file_name) {
5265                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5266         } elsif (defined $hash) {
5267                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5268         } else {
5269                 $alt_url = href(-full=>1, action=>"summary");
5270         }
5271         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5272         if ($format eq 'rss') {
5273                 print <<XML;
5274 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5275 <channel>
5276 XML
5277                 print "<title>$title</title>\n" .
5278                       "<link>$alt_url</link>\n" .
5279                       "<description>$descr</description>\n" .
5280                       "<language>en</language>\n";
5281         } elsif ($format eq 'atom') {
5282                 print <<XML;
5283 <feed xmlns="http://www.w3.org/2005/Atom">
5284 XML
5285                 print "<title>$title</title>\n" .
5286                       "<subtitle>$descr</subtitle>\n" .
5287                       '<link rel="alternate" type="text/html" href="' .
5288                       $alt_url . '" />' . "\n" .
5289                       '<link rel="self" type="' . $content_type . '" href="' .
5290                       $cgi->self_url() . '" />' . "\n" .
5291                       "<id>" . href(-full=>1) . "</id>\n" .
5292                       # use project owner for feed author
5293                       "<author><name>$owner</name></author>\n";
5294                 if (defined $favicon) {
5295                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5296                 }
5297                 if (defined $logo_url) {
5298                         # not twice as wide as tall: 72 x 27 pixels
5299                         print "<logo>" . esc_url($logo) . "</logo>\n";
5300                 }
5301                 if (! %latest_date) {
5302                         # dummy date to keep the feed valid until commits trickle in:
5303                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5304                 } else {
5305                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5306                 }
5307         }
5308
5309         # contents
5310         for (my $i = 0; $i <= $#commitlist; $i++) {
5311                 my %co = %{$commitlist[$i]};
5312                 my $commit = $co{'id'};
5313                 # we read 150, we always show 30 and the ones more recent than 48 hours
5314                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5315                         last;
5316                 }
5317                 my %cd = parse_date($co{'author_epoch'});
5318
5319                 # get list of changed files
5320                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5321                         $co{'parent'} || "--root",
5322                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5323                         or next;
5324                 my @difftree = map { chomp; $_ } <$fd>;
5325                 close $fd
5326                         or next;
5327
5328                 # print element (entry, item)
5329                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5330                 if ($format eq 'rss') {
5331                         print "<item>\n" .
5332                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5333                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5334                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5335                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5336                               "<link>$co_url</link>\n" .
5337                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5338                               "<content:encoded>" .
5339                               "<![CDATA[\n";
5340                 } elsif ($format eq 'atom') {
5341                         print "<entry>\n" .
5342                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5343                               "<updated>$cd{'iso-8601'}</updated>\n" .
5344                               "<author>\n" .
5345                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5346                         if ($co{'author_email'}) {
5347                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5348                         }
5349                         print "</author>\n" .
5350                               # use committer for contributor
5351                               "<contributor>\n" .
5352                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5353                         if ($co{'committer_email'}) {
5354                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5355                         }
5356                         print "</contributor>\n" .
5357                               "<published>$cd{'iso-8601'}</published>\n" .
5358                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5359                               "<id>$co_url</id>\n" .
5360                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5361                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5362                 }
5363                 my $comment = $co{'comment'};
5364                 print "<pre>\n";
5365                 foreach my $line (@$comment) {
5366                         $line = esc_html($line);
5367                         print "$line\n";
5368                 }
5369                 print "</pre><ul>\n";
5370                 foreach my $difftree_line (@difftree) {
5371                         my %difftree = parse_difftree_raw_line($difftree_line);
5372                         next if !$difftree{'from_id'};
5373
5374                         my $file = $difftree{'file'} || $difftree{'to_file'};
5375
5376                         print "<li>" .
5377                               "[" .
5378                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5379                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5380                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5381                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5382                                       -title => "diff"}, 'D');
5383                         if ($have_blame) {
5384                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5385                                                              file_name=>$file, hash_base=>$commit),
5386                                               -title => "blame"}, 'B');
5387                         }
5388                         # if this is not a feed of a file history
5389                         if (!defined $file_name || $file_name ne $file) {
5390                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5391                                                              file_name=>$file, hash=>$commit),
5392                                               -title => "history"}, 'H');
5393                         }
5394                         $file = esc_path($file);
5395                         print "] ".
5396                               "$file</li>\n";
5397                 }
5398                 if ($format eq 'rss') {
5399                         print "</ul>]]>\n" .
5400                               "</content:encoded>\n" .
5401                               "</item>\n";
5402                 } elsif ($format eq 'atom') {
5403                         print "</ul>\n</div>\n" .
5404                               "</content>\n" .
5405                               "</entry>\n";
5406                 }
5407         }
5408
5409         # end of feed
5410         if ($format eq 'rss') {
5411                 print "</channel>\n</rss>\n";
5412         }       elsif ($format eq 'atom') {
5413                 print "</feed>\n";
5414         }
5415 }
5416
5417 sub git_rss {
5418         git_feed('rss');
5419 }
5420
5421 sub git_atom {
5422         git_feed('atom');
5423 }
5424
5425 sub git_opml {
5426         my @list = git_get_projects_list();
5427
5428         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5429         print <<XML;
5430 <?xml version="1.0" encoding="utf-8"?>
5431 <opml version="1.0">
5432 <head>
5433   <title>$site_name OPML Export</title>
5434 </head>
5435 <body>
5436 <outline text="git RSS feeds">
5437 XML
5438
5439         foreach my $pr (@list) {
5440                 my %proj = %$pr;
5441                 my $head = git_get_head_hash($proj{'path'});
5442                 if (!defined $head) {
5443                         next;
5444                 }
5445                 $git_dir = "$projectroot/$proj{'path'}";
5446                 my %co = parse_commit($head);
5447                 if (!%co) {
5448                         next;
5449                 }
5450
5451                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5452                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5453                 my $html = "$my_url?p=$proj{'path'};a=summary";
5454                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5455         }
5456         print <<XML;
5457 </outline>
5458 </body>
5459 </opml>
5460 XML
5461 }