git.oblomov.eu Git - git/blob - gitweb/gitweb.perl

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