filter-branch: remove an unnecessary use of 'git read-tree'
[gitweb.git] / gitweb / gitweb.perl
index 4d7e4ff7a08694635f493d4910ffaa5da792e8e4..c77cd0341d98f6a38af55c6ed6f09704abf4e967 100755 (executable)
@@ -94,7 +94,7 @@ BEGIN
 # URI and label (title) of GIT logo link
 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
 #our $logo_label = "git documentation";
-our $logo_url = "http://git.or.cz/";
+our $logo_url = "http://git-scm.com/";
 our $logo_label = "git homepage";
 
 # source of projects list
@@ -160,7 +160,8 @@ BEGIN
        #       'suffix' => filename suffix,
        #       'format' => --format for git-archive,
        #       'compressor' => [compressor command and arguments]
-       #                       (array reference, optional)}
+       #                       (array reference, optional)
+       #       'disabled' => boolean (optional)}
        #
        'tgz' => {
                'display' => 'tar.gz',
@@ -176,6 +177,14 @@ BEGIN
                'format' => 'tar',
                'compressor' => ['bzip2']},
 
+       'txz' => {
+               'display' => 'tar.xz',
+               'type' => 'application/x-xz',
+               'suffix' => '.tar.xz',
+               'format' => 'tar',
+               'compressor' => ['xz'],
+               'disabled' => 1},
+
        'zip' => {
                'display' => 'zip',
                'type' => 'application/x-zip',
@@ -188,6 +197,7 @@ BEGIN
 our %known_snapshot_format_aliases = (
        'gzip'  => 'tgz',
        'bzip2' => 'tbz2',
+       'xz'    => 'txz',
 
        # backward compatibility: legacy gitweb config support
        'x-gzip' => undef, 'gz' => undef,
@@ -378,15 +388,18 @@ BEGIN
        # shortlog or commit will display an avatar associated with
        # the email of the committer(s) and/or author(s).
 
-       # Currently only the gravatar provider is available, and it
-       # depends on Digest::MD5. If an unknown provider is specified,
-       # the feature is disabled.
+       # Currently available providers are gravatar and picon.
+       # If an unknown provider is specified, the feature is disabled.
+
+       # Gravatar depends on Digest::MD5.
+       # Picon currently relies on the indiana.edu database.
 
        # To enable system wide have in $GITWEB_CONFIG
-       # $feature{'avatar'}{'default'} = ['gravatar'];
+       # $feature{'avatar'}{'default'} = ['<provider>'];
+       # where <provider> is either gravatar or picon.
        # To have project specific config enable override in $GITWEB_CONFIG
        # $feature{'avatar'}{'override'} = 1;
-       # and in project config gitweb.avatar = gravatar;
+       # and in project config gitweb.avatar = <provider>;
        'avatar' => {
                'sub' => \&feature_avatar,
                'override' => 0,
@@ -402,7 +415,7 @@ sub gitweb_get_feature {
                @{$feature{$name}{'default'}});
        if (!$override) { return @defaults; }
        if (!defined $sub) {
-               warn "feature $name is not overrideable";
+               warn "feature $name is not overridable";
                return @defaults;
        }
        return $sub->(@defaults);
@@ -491,7 +504,8 @@ sub filter_snapshot_fmts {
                exists $known_snapshot_format_aliases{$_} ?
                       $known_snapshot_format_aliases{$_} : $_} @fmts;
        @fmts = grep {
-               exists $known_snapshot_formats{$_} } @fmts;
+               exists $known_snapshot_formats{$_} &&
+               !$known_snapshot_formats{$_}{'disabled'}} @fmts;
 }
 
 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
@@ -853,6 +867,8 @@ sub evaluate_path_info {
 our ($git_avatar) = gitweb_get_feature('avatar');
 if ($git_avatar eq 'gravatar') {
        $git_avatar = '' unless (eval { require Digest::MD5; 1; });
+} elsif ($git_avatar eq 'picon') {
+       # no dependencies
 } else {
        $git_avatar = '';
 }
@@ -935,10 +951,13 @@ sub href {
                        if (defined $params{'hash_parent_base'}) {
                                $href .= esc_url($params{'hash_parent_base'});
                                # skip the file_parent if it's the same as the file_name
-                               delete $params{'file_parent'} if $params{'file_parent'} eq $params{'file_name'};
-                               if (defined $params{'file_parent'} && $params{'file_parent'} !~ /\.\./) {
-                                       $href .= ":/".esc_url($params{'file_parent'});
-                                       delete $params{'file_parent'};
+                               if (defined $params{'file_parent'}) {
+                                       if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
+                                               delete $params{'file_parent'};
+                                       } elsif ($params{'file_parent'} !~ /\.\./) {
+                                               $href .= ":/".esc_url($params{'file_parent'});
+                                               delete $params{'file_parent'};
+                                       }
                                }
                                $href .= "..";
                                delete $params{'hash_parent'};
@@ -1064,8 +1083,7 @@ sub to_utf8 {
 # correct, but quoted slashes look too horrible in bookmarks
 sub esc_param {
        my $str = shift;
-       $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
-       $str =~ s/\+/%2B/g;
+       $str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
        $str =~ s/ /\+/g;
        return $str;
 }
@@ -1505,10 +1523,10 @@ sub format_subject_html {
                $long =~ s/[[:cntrl:]]/?/g;
                return $cgi->a({-href => $href, -class => "list subject",
                                -title => to_utf8($long)},
-                      esc_html($short) . $extra);
+                      esc_html($short)) . $extra;
        } else {
                return $cgi->a({-href => $href, -class => "list subject"},
-                      esc_html($long)  . $extra);
+                      esc_html($long)) . $extra;
        }
 }
 
@@ -1520,6 +1538,20 @@ sub format_subject_html {
 # given page, there's no risk for cache conflicts.
 our %avatar_cache = ();
 
+# Compute the picon url for a given email, by using the picon search service over at
+# http://www.cs.indiana.edu/picons/search.html
+sub picon_url {
+       my $email = lc shift;
+       if (!$avatar_cache{$email}) {
+               my ($user, $domain) = split('@', $email);
+               $avatar_cache{$email} =
+                       "http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
+                       "$domain/$user/" .
+                       "users+domains+unknown/up/single";
+       }
+       return $avatar_cache{$email};
+}
+
 # Compute the gravatar url for a given email, if it's not in the cache already.
 # Gravatar stores only the part of the URL before the size, since that's the
 # one computationally more expensive. This also allows reuse of the cache for
@@ -1544,9 +1576,10 @@ sub git_get_avatar {
        my $url = "";
        if ($git_avatar eq 'gravatar') {
                $url = gravatar_url($email, $size);
+       } elsif ($git_avatar eq 'picon') {
+               $url = picon_url($email);
        }
-       # Currently only gravatars are supported, but other forms such as
-       # picons can be added by putting an else up here and defining $url
+       # Other providers can be added by extending the if chain, defining $url
        # as needed. If no variant puts something in $url, we assume avatars
        # are completely disabled/unavailable.
        if ($url) {
@@ -1554,6 +1587,7 @@ sub git_get_avatar {
                       "<img width=\"$size\" " .
                            "class=\"avatar\" " .
                            "src=\"$url\" " .
+                           "alt=\"\" " .
                       "/>" . $post_white;
        } else {
                return "";
@@ -2549,7 +2583,7 @@ sub parse_commit_text {
                } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
                        push @parents, $1;
                } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
-                       $co{'author'} = $1;
+                       $co{'author'} = to_utf8($1);
                        $co{'author_epoch'} = $2;
                        $co{'author_tz'} = $3;
                        if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
@@ -2559,10 +2593,9 @@ sub parse_commit_text {
                                $co{'author_name'} = $co{'author'};
                        }
                } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
-                       $co{'committer'} = $1;
+                       $co{'committer'} = to_utf8($1);
                        $co{'committer_epoch'} = $2;
                        $co{'committer_tz'} = $3;
-                       $co{'committer_name'} = $co{'committer'};
                        if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
                                $co{'committer_name'}  = $1;
                                $co{'committer_email'} = $2;
@@ -4780,7 +4813,7 @@ sub git_blame {
        git_print_page_path($file_name, $ftype, $hash_base);
 
        # page body
-       my @rev_color = qw(light2 dark2);
+       my @rev_color = qw(light dark);
        my $num_colors = scalar(@rev_color);
        my $current_color = 0;
        my %metainfo = ();
@@ -4798,15 +4831,18 @@ sub git_blame {
                my ($full_rev, $orig_lineno, $lineno, $group_size) =
                   ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
                if (!exists $metainfo{$full_rev}) {
-                       $metainfo{$full_rev} = {};
+                       $metainfo{$full_rev} = { 'nprevious' => 0 };
                }
                my $meta = $metainfo{$full_rev};
                my $data;
                while ($data = <$fd>) {
                        chomp $data;
                        last if ($data =~ s/^\t//); # contents of line
-                       if ($data =~ /^(\S+) (.*)$/) {
-                               $meta->{$1} = $2;
+                       if ($data =~ /^(\S+)(?: (.*))?$/) {
+                               $meta->{$1} = $2 unless exists $meta->{$1};
+                       }
+                       if ($data =~ /^previous /) {
+                               $meta->{'nprevious'}++;
                        }
                }
                my $short_rev = substr($full_rev, 0, 8);
@@ -4817,7 +4853,11 @@ sub git_blame {
                if ($group_size) {
                        $current_color = ($current_color + 1) % $num_colors;
                }
-               print "<tr id=\"l$lineno\" class=\"$rev_color[$current_color]\">\n";
+               my $tr_class = $rev_color[$current_color];
+               $tr_class .= ' boundary' if (exists $meta->{'boundary'});
+               $tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
+               $tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
+               print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
                if ($group_size) {
                        print "<td class=\"sha1\"";
                        print " title=\"". esc_html($author) . ", $date\"";
@@ -4827,22 +4867,31 @@ sub git_blame {
                                                     hash=>$full_rev,
                                                     file_name=>$file_name)},
                                      esc_html($short_rev));
+                       if ($group_size >= 2) {
+                               my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
+                               if (@author_initials) {
+                                       print "<br />" .
+                                             esc_html(join('', @author_initials));
+                                       #           or join('.', ...)
+                               }
+                       }
                        print "</td>\n";
                }
-               my $parent_commit;
-               if (!exists $meta->{'parent'}) {
-                       open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
-                               or die_error(500, "Open git-rev-parse failed");
-                       $parent_commit = <$dd>;
-                       close $dd;
-                       chomp($parent_commit);
-                       $meta->{'parent'} = $parent_commit;
-               } else {
-                       $parent_commit = $meta->{'parent'};
-               }
+               # 'previous' <sha1 of parent commit> <filename at commit>
+               if (exists $meta->{'previous'} &&
+                   $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
+                       $meta->{'parent'} = $1;
+                       $meta->{'file_parent'} = unquote($2);
+               }
+               my $linenr_commit =
+                       exists($meta->{'parent'}) ?
+                       $meta->{'parent'} : $full_rev;
+               my $linenr_filename =
+                       exists($meta->{'file_parent'}) ?
+                       $meta->{'file_parent'} : unquote($meta->{'filename'});
                my $blamed = href(action => 'blame',
-                                 file_name => $meta->{'filename'},
-                                 hash_base => $parent_commit);
+                                 file_name => $linenr_filename,
+                                 hash_base => $linenr_commit);
                print "<td class=\"linenr\">";
                print $cgi->a({ -href => "$blamed#l$orig_lineno",
                                -class => "linenr" },
@@ -5015,7 +5064,8 @@ sub git_blob {
                        chomp $line;
                        $nr++;
                        $line = untabify($line);
-                       printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
+                       printf "<div class=\"pre\"><a id=\"l%i\" href=\"" . href(-replay => 1)
+                               . "#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
                               $nr, $nr, $nr, esc_html($line, -nbsp=>1);
                }
        }
@@ -5140,6 +5190,8 @@ sub git_snapshot {
                die_error(400, "Invalid snapshot format parameter");
        } elsif (!exists($known_snapshot_formats{$format})) {
                die_error(400, "Unknown snapshot format");
+       } elsif ($known_snapshot_formats{$format}{'disabled'}) {
+               die_error(403, "Snapshot format not allowed");
        } elsif (!grep($_ eq $format, @snapshot_fmts)) {
                die_error(403, "Unsupported snapshot format");
        }
@@ -5276,7 +5328,7 @@ sub git_commit {
                        } @$parents ) .
                        ')';
        }
-       if (gitweb_check_feature('patches')) {
+       if (gitweb_check_feature('patches') && @$parents <= 1) {
                $formats_nav .= " | " .
                        $cgi->a({-href => href(action=>"patch", -replay=>1)},
                                "patch");
@@ -5564,7 +5616,7 @@ sub git_commitdiff {
                $formats_nav =
                        $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
                                "raw");
-               if ($patch_max) {
+               if ($patch_max && @{$co{'parents'}} <= 1) {
                        $formats_nav .= " | " .
                                $cgi->a({-href => href(action=>"patch", -replay=>1)},
                                        "patch");
@@ -5772,7 +5824,7 @@ sub git_commitdiff_plain {
 
 # format-patch-style patches
 sub git_patch {
-       git_commitdiff(-format => 'patch', -single=> 1);
+       git_commitdiff(-format => 'patch', -single => 1);
 }
 
 sub git_patches {