gitweb: There can be more than two levels of subdirectories
[gitweb.git] / gitweb / gitweb.cgi
index 9c214f534b3b5248100202b47893af442ec40fd5..9569af09b5dd201a3f646071e6c82c01643d40d5 100755 (executable)
@@ -14,6 +14,7 @@ use CGI::Util qw(unescape);
 use CGI::Carp qw(fatalsToBrowser);
 use Encode;
 use Fcntl ':mode';
+use File::Find qw();
 binmode STDOUT, ':utf8';
 
 our $cgi = new CGI;
@@ -160,6 +161,39 @@ if (defined $searchtext) {
        $searchtext = quotemeta $searchtext;
 }
 
+# dispatch
+my %actions = (
+       "blame" => \&git_blame2,
+       "blobdiff" => \&git_blobdiff,
+       "blobdiff_plain" => \&git_blobdiff_plain,
+       "blob" => \&git_blob,
+       "blob_plain" => \&git_blob_plain,
+       "commitdiff" => \&git_commitdiff,
+       "commitdiff_plain" => \&git_commitdiff_plain,
+       "commit" => \&git_commit,
+       "heads" => \&git_heads,
+       "history" => \&git_history,
+       "log" => \&git_log,
+       "rss" => \&git_rss,
+       "search" => \&git_search,
+       "shortlog" => \&git_shortlog,
+       "summary" => \&git_summary,
+       "tag" => \&git_tag,
+       "tags" => \&git_tags,
+       "tree" => \&git_tree,
+);
+
+$action = 'summary' if (!defined($action));
+if (!defined($actions{$action})) {
+       undef $action;
+       die_error(undef, "Unknown action.");
+}
+$actions{$action}->();
+exit;
+
+## ======================================================================
+## validation, quoting/unquoting and escaping
+
 sub validate_input {
        my $input = shift;
 
@@ -175,66 +209,6 @@ sub validate_input {
        return $input;
 }
 
-if (!defined $action || $action eq "summary") {
-       git_summary();
-       exit;
-} elsif ($action eq "heads") {
-       git_heads();
-       exit;
-} elsif ($action eq "tags") {
-       git_tags();
-       exit;
-} elsif ($action eq "blob") {
-       git_blob();
-       exit;
-} elsif ($action eq "blob_plain") {
-       git_blob_plain();
-       exit;
-} elsif ($action eq "tree") {
-       git_tree();
-       exit;
-} elsif ($action eq "rss") {
-       git_rss();
-       exit;
-} elsif ($action eq "commit") {
-       git_commit();
-       exit;
-} elsif ($action eq "log") {
-       git_log();
-       exit;
-} elsif ($action eq "blobdiff") {
-       git_blobdiff();
-       exit;
-} elsif ($action eq "blobdiff_plain") {
-       git_blobdiff_plain();
-       exit;
-} elsif ($action eq "commitdiff") {
-       git_commitdiff();
-       exit;
-} elsif ($action eq "commitdiff_plain") {
-       git_commitdiff_plain();
-       exit;
-} elsif ($action eq "history") {
-       git_history();
-       exit;
-} elsif ($action eq "search") {
-       git_search();
-       exit;
-} elsif ($action eq "shortlog") {
-       git_shortlog();
-       exit;
-} elsif ($action eq "tag") {
-       git_tag();
-       exit;
-} elsif ($action eq "blame") {
-       git_blame2();
-       exit;
-} else {
-       undef $action;
-       die_error(undef, "Unknown action.");
-       exit;
-}
-
 # quote unsafe chars, but keep the slash, even when it's not
 # correct, but quoted slashes look too horrible in bookmarks
 sub esc_param {
@@ -250,6 +224,7 @@ sub esc_html {
        my $str = shift;
        $str = decode("utf8", $str, Encode::FB_DEFAULT);
        $str = escapeHTML($str);
+       $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
        return $str;
 }
 
@@ -263,6 +238,29 @@ sub unquote {
        return $str;
 }
 
+## ----------------------------------------------------------------------
+## HTML aware string manipulation
+
+sub chop_str {
+       my $str = shift;
+       my $len = shift;
+       my $add_len = shift || 10;
+
+       # allow only $len chars, but don't cut a word if it would fit in $add_len
+       # if it doesn't fit, cut it if it's still longer than the dots we would add
+       $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
+       my $body = $1;
+       my $tail = $2;
+       if (length($tail) > 4) {
+               $tail = " ...";
+               $body =~ s/&[^;]*$//; # remove chopped character entities
+       }
+       return "$body$tail";
+}
+
+## ----------------------------------------------------------------------
+## functions returning short strings
+
 # CSS class for given age value (in seconds)
 sub age_class {
        my $age = shift;
@@ -276,125 +274,108 @@ sub age_class {
        }
 }
 
-sub git_header_html {
-       my $status = shift || "200 OK";
-       my $expires = shift;
+# convert age in seconds to "nn units ago" string
+sub age_string {
+       my $age = shift;
+       my $age_str;
 
-       my $title = "$site_name git";
-       if (defined $project) {
-               $title .= " - $project";
-               if (defined $action) {
-                       $title .= "/$action";
-                       if (defined $file_name) {
-                               $title .= " - $file_name";
-                               if ($action eq "tree" && $file_name !~ m|/$|) {
-                                       $title .= "/";
-                               }
-                       }
-               }
-       }
-       my $content_type;
-       # require explicit support from the UA if we are to send the page as
-       # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
-       # we have to do this because MSIE sometimes globs '*/*', pretending to
-       # support xhtml+xml but choking when it gets what it asked for.
-       if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
-               $content_type = 'application/xhtml+xml';
+       if ($age > 60*60*24*365*2) {
+               $age_str = (int $age/60/60/24/365);
+               $age_str .= " years ago";
+       } elsif ($age > 60*60*24*(365/12)*2) {
+               $age_str = int $age/60/60/24/(365/12);
+               $age_str .= " months ago";
+       } elsif ($age > 60*60*24*7*2) {
+               $age_str = int $age/60/60/24/7;
+               $age_str .= " weeks ago";
+       } elsif ($age > 60*60*24*2) {
+               $age_str = int $age/60/60/24;
+               $age_str .= " days ago";
+       } elsif ($age > 60*60*2) {
+               $age_str = int $age/60/60;
+               $age_str .= " hours ago";
+       } elsif ($age > 60*2) {
+               $age_str = int $age/60;
+               $age_str .= " min ago";
+       } elsif ($age > 2) {
+               $age_str = int $age;
+               $age_str .= " sec ago";
        } else {
-               $content_type = 'text/html';
+               $age_str .= " right now";
        }
-       print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
-       print <<EOF;
-<?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
-<!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
-<!-- git core binaries version $git_version -->
-<head>
-<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
-<meta name="robots" content="index, nofollow"/>
-<title>$title</title>
-<link rel="stylesheet" type="text/css" href="$stylesheet"/>
-$rss_link
-</head>
-<body>
-EOF
-       print "<div class=\"page_header\">\n" .
-             "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
-             "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
-             "</a>\n";
-       print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
-       if (defined $project) {
-               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
-               if (defined $action) {
-                       print " / $action";
-               }
-               print "\n";
-               if (!defined $searchtext) {
-                       $searchtext = "";
-               }
-               my $search_hash;
-               if (defined $hash_base) {
-                       $search_hash = $hash_base;
-               } elsif (defined $hash) {
-                       $search_hash = $hash;
+       return $age_str;
+}
+
+# convert file mode in octal to symbolic file mode string
+sub mode_str {
+       my $mode = oct shift;
+
+       if (S_ISDIR($mode & S_IFMT)) {
+               return 'drwxr-xr-x';
+       } elsif (S_ISLNK($mode)) {
+               return 'lrwxrwxrwx';
+       } elsif (S_ISREG($mode)) {
+               # git cares only about the executable bit
+               if ($mode & S_IXUSR) {
+                       return '-rwxr-xr-x';
                } else {
-                       $search_hash = "HEAD";
-               }
-               $cgi->param("a", "search");
-               $cgi->param("h", $search_hash);
-               print $cgi->startform(-method => "get", -action => $my_uri) .
-                     "<div class=\"search\">\n" .
-                     $cgi->hidden(-name => "p") . "\n" .
-                     $cgi->hidden(-name => "a") . "\n" .
-                     $cgi->hidden(-name => "h") . "\n" .
-                     $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
-                     "</div>" .
-                     $cgi->end_form() . "\n";
+                       return '-rw-r--r--';
+               };
+       } else {
+               return '----------';
        }
-       print "</div>\n";
 }
 
-sub git_footer_html {
-       print "<div class=\"page_footer\">\n";
-       if (defined $project) {
-               my $descr = git_read_description($project);
-               if (defined $descr) {
-                       print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
-               }
-               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
+# convert file mode in octal to file type string
+sub file_type {
+       my $mode = oct shift;
+
+       if (S_ISDIR($mode & S_IFMT)) {
+               return "directory";
+       } elsif (S_ISLNK($mode)) {
+               return "symlink";
+       } elsif (S_ISREG($mode)) {
+               return "file";
        } else {
-               print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
+               return "unknown";
        }
-       print "</div>\n" .
-             "</body>\n" .
-             "</html>";
 }
 
-sub die_error {
-       my $status = shift || "403 Forbidden";
-       my $error = shift || "Malformed query, file missing or permission denied";
+## ----------------------------------------------------------------------
+## functions returning short HTML fragments, or transforming HTML fragments
+## which don't beling to other sections
 
-       git_header_html($status);
-       print "<div class=\"page_body\">\n" .
-             "<br/><br/>\n" .
-             "$status - $error\n" .
-             "<br/>\n" .
-             "</div>\n";
-       git_footer_html();
-       exit;
+# format line of commit message or tag comment
+sub format_log_line_html {
+       my $line = shift;
+
+       $line = esc_html($line);
+       $line =~ s/ /&nbsp;/g;
+       if ($line =~ m/([0-9a-fA-F]{40})/) {
+               my $hash_text = $1;
+               if (git_get_type($hash_text) eq "commit") {
+                       my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
+                       $line =~ s/$hash_text/$link/;
+               }
+       }
+       return $line;
 }
 
-sub git_get_type {
-       my $hash = shift;
+# format marker of refs pointing to given object
+sub git_get_referencing {
+       my ($refs, $id) = @_;
 
-       open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
-       my $type = <$fd>;
-       close $fd or return;
-       chomp $type;
-       return $type;
+       if (defined $refs->{$id}) {
+               return ' <span class="tag">' . esc_html($refs->{$id}) . '</span>';
+       } else {
+               return "";
+       }
 }
 
+## ----------------------------------------------------------------------
+## git utility subroutines, invoking git commands
+
+# get HEAD ref of given project as hash
 sub git_read_head {
        my $project = shift;
        my $oENV = $ENV{'GIT_DIR'};
@@ -413,35 +394,180 @@ sub git_read_head {
        return $retval;
 }
 
-sub git_read_hash {
-       my $path = shift;
+# get type of given object
+sub git_get_type {
+       my $hash = shift;
 
-       open my $fd, "$projectroot/$path" or return undef;
-       my $head = <$fd>;
-       close $fd;
-       chomp $head;
-       if ($head =~ m/^[0-9a-fA-F]{40}$/) {
-               return $head;
-       }
+       open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
+       my $type = <$fd>;
+       close $fd or return;
+       chomp $type;
+       return $type;
 }
 
-sub git_read_description {
-       my $path = shift;
+sub git_get_project_config {
+       my $key = shift;
 
-       open my $fd, "$projectroot/$path/description" or return undef;
-       my $descr = <$fd>;
-       close $fd;
-       chomp $descr;
-       return $descr;
-}
+       return unless ($key);
+       $key =~ s/^gitweb\.//;
+       return if ($key =~ m/\W/);
 
-sub git_read_tag {
-       my $tag_id = shift;
-       my %tag;
-       my @comment;
+       my $val = qx($GIT repo-config --get gitweb.$key);
+       return ($val);
+}
 
-       open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
-       $tag{'id'} = $tag_id;
+sub git_get_project_config_bool {
+       my $val = git_get_project_config (@_);
+       if ($val and $val =~ m/true|yes|on/) {
+               return (1);
+       }
+       return; # implicit false
+}
+
+# get hash of given path at given ref
+sub git_get_hash_by_path {
+       my $base = shift;
+       my $path = shift || return undef;
+
+       my $tree = $base;
+
+       open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
+               or die_error(undef, "Open git-ls-tree failed.");
+       my $line = <$fd>;
+       close $fd or return undef;
+
+       #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
+       $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
+       return $3;
+}
+
+## ......................................................................
+## git utility functions, directly accessing git repository
+
+# assumes that PATH is not symref
+sub git_read_hash {
+       my $path = shift;
+
+       open my $fd, "$projectroot/$path" or return undef;
+       my $head = <$fd>;
+       close $fd;
+       chomp $head;
+       if ($head =~ m/^[0-9a-fA-F]{40}$/) {
+               return $head;
+       }
+}
+
+sub git_read_description {
+       my $path = shift;
+
+       open my $fd, "$projectroot/$path/description" or return undef;
+       my $descr = <$fd>;
+       close $fd;
+       chomp $descr;
+       return $descr;
+}
+
+sub git_read_projects {
+       my @list;
+
+       if (-d $projects_list) {
+               # search in directory
+               my $dir = $projects_list;
+               opendir my ($dh), $dir or return undef;
+               while (my $dir = readdir($dh)) {
+                       if (-e "$projectroot/$dir/HEAD") {
+                               my $pr = {
+                                       path => $dir,
+                               };
+                               push @list, $pr
+                       }
+               }
+               closedir($dh);
+       } elsif (-f $projects_list) {
+               # read from file(url-encoded):
+               # 'git%2Fgit.git Linus+Torvalds'
+               # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
+               # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
+               open my ($fd), $projects_list or return undef;
+               while (my $line = <$fd>) {
+                       chomp $line;
+                       my ($path, $owner) = split ' ', $line;
+                       $path = unescape($path);
+                       $owner = unescape($owner);
+                       if (!defined $path) {
+                               next;
+                       }
+                       if (-e "$projectroot/$path/HEAD") {
+                               my $pr = {
+                                       path => $path,
+                                       owner => decode("utf8", $owner, Encode::FB_DEFAULT),
+                               };
+                               push @list, $pr
+                       }
+               }
+               close $fd;
+       }
+       @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
+       return @list;
+}
+
+sub read_info_ref {
+       my $type = shift || "";
+       my %refs;
+       # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
+       # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
+       open my $fd, "$projectroot/$project/info/refs" or return;
+       while (my $line = <$fd>) {
+               chomp $line;
+               # attention: for $type == "" it saves only last path part of ref name
+               # e.g. from 'refs/heads/jn/gitweb' it would leave only 'gitweb'
+               if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
+                       if (defined $refs{$1}) {
+                               $refs{$1} .= " / $2";
+                       } else {
+                               $refs{$1} = $2;
+                       }
+               }
+       }
+       close $fd or return;
+       return \%refs;
+}
+
+## ----------------------------------------------------------------------
+## parse to hash functions
+
+sub date_str {
+       my $epoch = shift;
+       my $tz = shift || "-0000";
+
+       my %date;
+       my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
+       my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
+       my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
+       $date{'hour'} = $hour;
+       $date{'minute'} = $min;
+       $date{'mday'} = $mday;
+       $date{'day'} = $days[$wday];
+       $date{'month'} = $months[$mon];
+       $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
+       $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
+
+       $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
+       my $local = $epoch + ((int $1 + ($2/60)) * 3600);
+       ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
+       $date{'hour_local'} = $hour;
+       $date{'minute_local'} = $min;
+       $date{'tz_local'} = $tz;
+       return %date;
+}
+
+sub git_read_tag {
+       my $tag_id = shift;
+       my %tag;
+       my @comment;
+
+       open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
+       $tag{'id'} = $tag_id;
        while (my $line = <$fd>) {
                chomp $line;
                if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
@@ -470,37 +596,6 @@ sub git_read_tag {
        return %tag
 }
 
-sub age_string {
-       my $age = shift;
-       my $age_str;
-
-       if ($age > 60*60*24*365*2) {
-               $age_str = (int $age/60/60/24/365);
-               $age_str .= " years ago";
-       } elsif ($age > 60*60*24*(365/12)*2) {
-               $age_str = int $age/60/60/24/(365/12);
-               $age_str .= " months ago";
-       } elsif ($age > 60*60*24*7*2) {
-               $age_str = int $age/60/60/24/7;
-               $age_str .= " weeks ago";
-       } elsif ($age > 60*60*24*2) {
-               $age_str = int $age/60/60/24;
-               $age_str .= " days ago";
-       } elsif ($age > 60*60*2) {
-               $age_str = int $age/60/60;
-               $age_str .= " hours ago";
-       } elsif ($age > 60*2) {
-               $age_str = int $age/60;
-               $age_str .= " min ago";
-       } elsif ($age > 2) {
-               $age_str = int $age;
-               $age_str .= " sec ago";
-       } else {
-               $age_str .= " right now";
-       }
-       return $age_str;
-}
-
 sub git_read_commit {
        my $commit_id = shift;
        my $commit_text = shift;
@@ -595,47 +690,554 @@ sub git_read_commit {
        return %co;
 }
 
-sub git_diff_print {
-       my $from = shift;
-       my $from_name = shift;
-       my $to = shift;
-       my $to_name = shift;
-       my $format = shift || "html";
+## ......................................................................
+## parse to array of hashes functions
 
-       my $from_tmp = "/dev/null";
-       my $to_tmp = "/dev/null";
-       my $pid = $$;
+sub git_read_refs {
+       my $ref_dir = shift;
+       my @reflist;
 
-       # create tmp from-file
-       if (defined $from) {
-               $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
-               open my $fd2, "> $from_tmp";
-               open my $fd, "-|", $GIT, "cat-file", "blob", $from;
-               my @file = <$fd>;
-               print $fd2 @file;
-               close $fd2;
-               close $fd;
-       }
+       my @refs;
+       my $pfxlen = length("$projectroot/$project/$ref_dir");
+       File::Find::find(sub {
+               return if (/^\./);
+               if (-f $_) {
+                       push @refs, substr($File::Find::name, $pfxlen + 1);
+               }
+       }, "$projectroot/$project/$ref_dir");
 
-       # create tmp to-file
-       if (defined $to) {
-               $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
-               open my $fd2, "> $to_tmp";
-               open my $fd, "-|", $GIT, "cat-file", "blob", $to;
-               my @file = <$fd>;
-               print $fd2 @file;
-               close $fd2;
-               close $fd;
+       foreach my $ref_file (@refs) {
+               my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
+               my $type = git_get_type($ref_id) || next;
+               my %ref_item;
+               my %co;
+               $ref_item{'type'} = $type;
+               $ref_item{'id'} = $ref_id;
+               $ref_item{'epoch'} = 0;
+               $ref_item{'age'} = "unknown";
+               if ($type eq "tag") {
+                       my %tag = git_read_tag($ref_id);
+                       $ref_item{'comment'} = $tag{'comment'};
+                       if ($tag{'type'} eq "commit") {
+                               %co = git_read_commit($tag{'object'});
+                               $ref_item{'epoch'} = $co{'committer_epoch'};
+                               $ref_item{'age'} = $co{'age_string'};
+                       } elsif (defined($tag{'epoch'})) {
+                               my $age = time - $tag{'epoch'};
+                               $ref_item{'epoch'} = $tag{'epoch'};
+                               $ref_item{'age'} = age_string($age);
+                       }
+                       $ref_item{'reftype'} = $tag{'type'};
+                       $ref_item{'name'} = $tag{'name'};
+                       $ref_item{'refid'} = $tag{'object'};
+               } elsif ($type eq "commit"){
+                       %co = git_read_commit($ref_id);
+                       $ref_item{'reftype'} = "commit";
+                       $ref_item{'name'} = $ref_file;
+                       $ref_item{'title'} = $co{'title'};
+                       $ref_item{'refid'} = $ref_id;
+                       $ref_item{'epoch'} = $co{'committer_epoch'};
+                       $ref_item{'age'} = $co{'age_string'};
+               } else {
+                       $ref_item{'reftype'} = $type;
+                       $ref_item{'name'} = $ref_file;
+                       $ref_item{'refid'} = $ref_id;
+               }
+
+               push @reflist, \%ref_item;
        }
+       # sort tags by age
+       @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
+       return \@reflist;
+}
 
-       open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
-       if ($format eq "plain") {
-               undef $/;
-               print <$fd>;
-               $/ = "\n";
-       } else {
+## ----------------------------------------------------------------------
+## filesystem-related functions
+
+sub get_file_owner {
+       my $path = shift;
+
+       my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
+       my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
+       if (!defined $gcos) {
+               return undef;
+       }
+       my $owner = $gcos;
+       $owner =~ s/[,;].*$//;
+       return decode("utf8", $owner, Encode::FB_DEFAULT);
+}
+
+## ......................................................................
+## mimetype related functions
+
+sub mimetype_guess_file {
+       my $filename = shift;
+       my $mimemap = shift;
+       -r $mimemap or return undef;
+
+       my %mimemap;
+       open(MIME, $mimemap) or return undef;
+       while (<MIME>) {
+               my ($mime, $exts) = split(/\t+/);
+               my @exts = split(/\s+/, $exts);
+               foreach my $ext (@exts) {
+                       $mimemap{$ext} = $mime;
+               }
+       }
+       close(MIME);
+
+       $filename =~ /\.(.*?)$/;
+       return $mimemap{$1};
+}
+
+sub mimetype_guess {
+       my $filename = shift;
+       my $mime;
+       $filename =~ /\./ or return undef;
+
+       if ($mimetypes_file) {
+               my $file = $mimetypes_file;
+               #$file =~ m#^/# or $file = "$projectroot/$path/$file";
+               $mime = mimetype_guess_file($filename, $file);
+       }
+       $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
+       return $mime;
+}
+
+sub git_blob_plain_mimetype {
+       my $fd = shift;
+       my $filename = shift;
+
+       if ($filename) {
+               my $mime = mimetype_guess($filename);
+               $mime and return $mime;
+       }
+
+       # just in case
+       return $default_blob_plain_mimetype unless $fd;
+
+       if (-T $fd) {
+               return 'text/plain' .
+                      ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
+       } elsif (! $filename) {
+               return 'application/octet-stream';
+       } elsif ($filename =~ m/\.png$/i) {
+               return 'image/png';
+       } elsif ($filename =~ m/\.gif$/i) {
+               return 'image/gif';
+       } elsif ($filename =~ m/\.jpe?g$/i) {
+               return 'image/jpeg';
+       } else {
+               return 'application/octet-stream';
+       }
+}
+
+## ======================================================================
+## functions printing HTML: header, footer, error page
+
+sub git_header_html {
+       my $status = shift || "200 OK";
+       my $expires = shift;
+
+       my $title = "$site_name git";
+       if (defined $project) {
+               $title .= " - $project";
+               if (defined $action) {
+                       $title .= "/$action";
+                       if (defined $file_name) {
+                               $title .= " - $file_name";
+                               if ($action eq "tree" && $file_name !~ m|/$|) {
+                                       $title .= "/";
+                               }
+                       }
+               }
+       }
+       my $content_type;
+       # require explicit support from the UA if we are to send the page as
+       # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
+       # we have to do this because MSIE sometimes globs '*/*', pretending to
+       # support xhtml+xml but choking when it gets what it asked for.
+       if ($cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ && $cgi->Accept('application/xhtml+xml') != 0) {
+               $content_type = 'application/xhtml+xml';
+       } else {
+               $content_type = 'text/html';
+       }
+       print $cgi->header(-type=>$content_type, -charset => 'utf-8', -status=> $status, -expires => $expires);
+       print <<EOF;
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
+<!-- git web interface v$version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
+<!-- git core binaries version $git_version -->
+<head>
+<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
+<meta name="robots" content="index, nofollow"/>
+<title>$title</title>
+<link rel="stylesheet" type="text/css" href="$stylesheet"/>
+$rss_link
+</head>
+<body>
+EOF
+       print "<div class=\"page_header\">\n" .
+             "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
+             "<img src=\"$my_uri?" . esc_param("a=git-logo.png") . "\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
+             "</a>\n";
+       print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
+       if (defined $project) {
+               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
+               if (defined $action) {
+                       print " / $action";
+               }
+               print "\n";
+               if (!defined $searchtext) {
+                       $searchtext = "";
+               }
+               my $search_hash;
+               if (defined $hash_base) {
+                       $search_hash = $hash_base;
+               } elsif (defined $hash) {
+                       $search_hash = $hash;
+               } else {
+                       $search_hash = "HEAD";
+               }
+               $cgi->param("a", "search");
+               $cgi->param("h", $search_hash);
+               print $cgi->startform(-method => "get", -action => $my_uri) .
+                     "<div class=\"search\">\n" .
+                     $cgi->hidden(-name => "p") . "\n" .
+                     $cgi->hidden(-name => "a") . "\n" .
+                     $cgi->hidden(-name => "h") . "\n" .
+                     $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
+                     "</div>" .
+                     $cgi->end_form() . "\n";
+       }
+       print "</div>\n";
+}
+
+sub git_footer_html {
+       print "<div class=\"page_footer\">\n";
+       if (defined $project) {
+               my $descr = git_read_description($project);
+               if (defined $descr) {
+                       print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
+               }
+               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=rss"), -class => "rss_logo"}, "RSS") . "\n";
+       } else {
+               print $cgi->a({-href => "$my_uri?" . esc_param("a=opml"), -class => "rss_logo"}, "OPML") . "\n";
+       }
+       print "</div>\n" .
+             "</body>\n" .
+             "</html>";
+}
+
+sub die_error {
+       my $status = shift || "403 Forbidden";
+       my $error = shift || "Malformed query, file missing or permission denied";
+
+       git_header_html($status);
+       print "<div class=\"page_body\">\n" .
+             "<br/><br/>\n" .
+             "$status - $error\n" .
+             "<br/>\n" .
+             "</div>\n";
+       git_footer_html();
+       exit;
+}
+
+## ----------------------------------------------------------------------
+## functions printing or outputting HTML: navigation
+
+sub git_page_nav {
+       my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
+       $extra = '' if !defined $extra; # pager or formats
+
+       my @navs = qw(summary shortlog log commit commitdiff tree);
+       if ($suppress) {
+               @navs = grep { $_ ne $suppress } @navs;
+       }
+
+       my %arg = map { $_, ''} @navs;
+       if (defined $head) {
+               for (qw(commit commitdiff)) {
+                       $arg{$_} = ";h=$head";
+               }
+               if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
+                       for (qw(shortlog log)) {
+                               $arg{$_} = ";h=$head";
+                       }
+               }
+       }
+       $arg{tree} .= ";h=$treehead" if defined $treehead;
+       $arg{tree} .= ";hb=$treebase" if defined $treebase;
+
+       print "<div class=\"page_nav\">\n" .
+               (join " | ",
+                map { $_ eq $current
+                                        ? $_
+                                        : $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$_$arg{$_}")}, "$_")
+                                }
+                @navs);
+       print "<br/>\n$extra<br/>\n" .
+             "</div>\n";
+}
+
+sub git_get_paging_nav {
+       my ($action, $hash, $head, $page, $nrevs) = @_;
+       my $paging_nav;
+
+
+       if ($hash ne $head || $page) {
+               $paging_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action")}, "HEAD");
+       } else {
+               $paging_nav .= "HEAD";
+       }
+
+       if ($page > 0) {
+               $paging_nav .= " &sdot; " .
+                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page-1)),
+                                                        -accesskey => "p", -title => "Alt-p"}, "prev");
+       } else {
+               $paging_nav .= " &sdot; prev";
+       }
+
+       if ($nrevs >= (100 * ($page+1)-1)) {
+               $paging_nav .= " &sdot; " .
+                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action;h=$hash;pg=" . ($page+1)),
+                                                        -accesskey => "n", -title => "Alt-n"}, "next");
+       } else {
+               $paging_nav .= " &sdot; next";
+       }
+
+       return $paging_nav;
+}
+
+## ......................................................................
+## functions printing or outputting HTML: div
+
+sub git_header_div {
+       my ($action, $title, $hash, $hash_base) = @_;
+       my $rest = '';
+
+       $rest .= ";h=$hash" if $hash;
+       $rest .= ";hb=$hash_base" if $hash_base;
+
+       print "<div class=\"header\">\n" .
+             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$action$rest"),
+                      -class => "title"}, $title ? $title : $action) . "\n" .
+             "</div>\n";
+}
+
+sub git_print_page_path {
+       my $name = shift;
+       my $type = shift;
+
+       if (!defined $name) {
+               print "<div class=\"page_path\"><b>/</b></div>\n";
+       } elsif ($type =~ "blob") {
+               print "<div class=\"page_path\"><b>" .
+                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
+       } else {
+               print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
+       }
+}
+
+## ......................................................................
+## functions printing large fragments of HTML
+
+sub git_shortlog_body {
+       # uses global variable $project
+       my ($revlist, $from, $to, $refs, $extra) = @_;
+       $from = 0 unless defined $from;
+       $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
+
+       print "<table class=\"shortlog\" cellspacing=\"0\">\n";
+       my $alternate = 0;
+       for (my $i = $from; $i <= $to; $i++) {
+               my $commit = $revlist->[$i];
+               #my $ref = defined $refs ? git_get_referencing($refs, $commit) : '';
+               my $ref = git_get_referencing($refs, $commit);
+               my %co = git_read_commit($commit);
+               my %ad = date_str($co{'author_epoch'});
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
+               print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+                     "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
+                     "<td>";
+               if (length($co{'title_short'}) < length($co{'title'})) {
+                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
+                                      -class => "list", -title => "$co{'title'}"},
+                             "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
+               } else {
+                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"),
+                                      -class => "list"},
+                             "<b>" . esc_html($co{'title'}) . "$ref</b>");
+               }
+               print "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") . " | " .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
+                     "</td>\n" .
+                     "</tr>\n";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"4\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+sub git_tags_body {
+       # uses global variable $project
+       my ($taglist, $from, $to, $extra) = @_;
+       $from = 0 unless defined $from;
+       $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
+
+       print "<table class=\"tags\" cellspacing=\"0\">\n";
+       my $alternate = 0;
+       for (my $i = $from; $i <= $to; $i++) {
+               my $entry = $taglist->[$i];
+               my %tag = %$entry;
+               my $comment_lines = $tag{'comment'};
+               my $comment = shift @$comment_lines;
+               my $comment_short;
+               if (defined $comment) {
+                       $comment_short = chop_str($comment, 30, 5);
+               }
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td><i>$tag{'age'}</i></td>\n" .
+                     "<td>" .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"),
+                              -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
+                     "</td>\n" .
+                     "<td>";
+               if (defined $comment) {
+                       if (length($comment_short) < length($comment)) {
+                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
+                                              -class => "list", -title => $comment}, $comment_short);
+                       } else {
+                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}"),
+                                              -class => "list"}, $comment);
+                       }
+               }
+               print "</td>\n" .
+                     "<td class=\"selflink\">";
+               if ($tag{'type'} eq "tag") {
+                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag");
+               } else {
+                       print "&nbsp;";
+               }
+               print "</td>\n" .
+                     "<td class=\"link\">" . " | " .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
+               if ($tag{'reftype'} eq "commit") {
+                       print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
+                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
+               } elsif ($tag{'reftype'} eq "blob") {
+                       print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$tag{'refid'}")}, "raw");
+               }
+               print "</td>\n" .
+                     "</tr>";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"5\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+sub git_heads_body {
+       # uses global variable $project
+       my ($taglist, $head, $from, $to, $extra) = @_;
+       $from = 0 unless defined $from;
+       $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
+
+       print "<table class=\"heads\" cellspacing=\"0\">\n";
+       my $alternate = 0;
+       for (my $i = $from; $i <= $to; $i++) {
+               my $entry = $taglist->[$i];
+               my %tag = %$entry;
+               my $curr = $tag{'id'} eq $head;
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td><i>$tag{'age'}</i></td>\n" .
+                     ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"),
+                              -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
+                     "</td>\n" .
+                     "<td class=\"link\">" .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") . " | " .
+                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
+                     "</td>\n" .
+                     "</tr>";
+       }
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"3\">$extra</td>\n" .
+                     "</tr>\n";
+       }
+       print "</table>\n";
+}
+
+## ----------------------------------------------------------------------
+## functions printing large fragments, format as one of arguments
+
+sub git_diff_print {
+       my $from = shift;
+       my $from_name = shift;
+       my $to = shift;
+       my $to_name = shift;
+       my $format = shift || "html";
+
+       my $from_tmp = "/dev/null";
+       my $to_tmp = "/dev/null";
+       my $pid = $$;
+
+       # create tmp from-file
+       if (defined $from) {
+               $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
+               open my $fd2, "> $from_tmp";
+               open my $fd, "-|", $GIT, "cat-file", "blob", $from;
+               my @file = <$fd>;
+               print $fd2 @file;
+               close $fd2;
+               close $fd;
+       }
+
+       # create tmp to-file
+       if (defined $to) {
+               $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
+               open my $fd2, "> $to_tmp";
+               open my $fd, "-|", $GIT, "cat-file", "blob", $to;
+               my @file = <$fd>;
+               print $fd2 @file;
+               close $fd2;
+               close $fd;
+       }
+
+       open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
+       if ($format eq "plain") {
+               undef $/;
+               print <$fd>;
+               $/ = "\n";
+       } else {
                while (my $line = <$fd>) {
-                       chomp($line);
+                       chomp $line;
                        my $char = substr($line, 0, 1);
                        my $diff_class = "";
                        if ($char eq '+') {
@@ -660,101 +1262,17 @@ sub git_diff_print {
        close $fd;
 
        if (defined $from) {
-               unlink($from_tmp);
-       }
-       if (defined $to) {
-               unlink($to_tmp);
-       }
-}
-
-sub mode_str {
-       my $mode = oct shift;
-
-       if (S_ISDIR($mode & S_IFMT)) {
-               return 'drwxr-xr-x';
-       } elsif (S_ISLNK($mode)) {
-               return 'lrwxrwxrwx';
-       } elsif (S_ISREG($mode)) {
-               # git cares only about the executable bit
-               if ($mode & S_IXUSR) {
-                       return '-rwxr-xr-x';
-               } else {
-                       return '-rw-r--r--';
-               };
-       } else {
-               return '----------';
-       }
-}
-
-sub chop_str {
-       my $str = shift;
-       my $len = shift;
-       my $add_len = shift || 10;
-
-       # allow only $len chars, but don't cut a word if it would fit in $add_len
-       # if it doesn't fit, cut it if it's still longer than the dots we would add
-       $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
-       my $body = $1;
-       my $tail = $2;
-       if (length($tail) > 4) {
-               $tail = " ...";
-       }
-       return "$body$tail";
-}
-
-sub file_type {
-       my $mode = oct shift;
-
-       if (S_ISDIR($mode & S_IFMT)) {
-               return "directory";
-       } elsif (S_ISLNK($mode)) {
-               return "symlink";
-       } elsif (S_ISREG($mode)) {
-               return "file";
-       } else {
-               return "unknown";
-       }
-}
-
-sub format_log_line_html {
-       my $line = shift;
-
-       $line = esc_html($line);
-       $line =~ s/ /&nbsp;/g;
-       if ($line =~ m/([0-9a-fA-F]{40})/) {
-               my $hash_text = $1;
-               if (git_get_type($hash_text) eq "commit") {
-                       my $link = $cgi->a({-class => "text", -href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_text")}, $hash_text);
-                       $line =~ s/$hash_text/$link/;
-               }
+               unlink($from_tmp);
+       }
+       if (defined $to) {
+               unlink($to_tmp);
        }
-       return $line;
 }
 
-sub date_str {
-       my $epoch = shift;
-       my $tz = shift || "-0000";
-
-       my %date;
-       my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
-       my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
-       my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
-       $date{'hour'} = $hour;
-       $date{'minute'} = $min;
-       $date{'mday'} = $mday;
-       $date{'day'} = $days[$wday];
-       $date{'month'} = $months[$mon];
-       $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000", $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
-       $date{'mday-time'} = sprintf "%d %s %02d:%02d", $mday, $months[$mon], $hour ,$min;
 
-       $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
-       my $local = $epoch + ((int $1 + ($2/60)) * 3600);
-       ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
-       $date{'hour_local'} = $hour;
-       $date{'minute_local'} = $min;
-       $date{'tz_local'} = $tz;
-       return %date;
-}
+## ======================================================================
+## ======================================================================
+## actions
 
 # git-logo (cached in browser for one day)
 sub git_logo {
@@ -776,82 +1294,6 @@ sub git_logo {
                "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
 }
 
-sub get_file_owner {
-       my $path = shift;
-
-       my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
-       my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
-       if (!defined $gcos) {
-               return undef;
-       }
-       my $owner = $gcos;
-       $owner =~ s/[,;].*$//;
-       return decode("utf8", $owner, Encode::FB_DEFAULT);
-}
-
-sub git_read_projects {
-       my @list;
-
-       if (-d $projects_list) {
-               # search in directory
-               my $dir = $projects_list;
-               opendir my ($dh), $dir or return undef;
-               while (my $dir = readdir($dh)) {
-                       if (-e "$projectroot/$dir/HEAD") {
-                               my $pr = {
-                                       path => $dir,
-                               };
-                               push @list, $pr
-                       }
-               }
-               closedir($dh);
-       } elsif (-f $projects_list) {
-               # read from file(url-encoded):
-               # 'git%2Fgit.git Linus+Torvalds'
-               # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
-               # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
-               open my ($fd), $projects_list or return undef;
-               while (my $line = <$fd>) {
-                       chomp $line;
-                       my ($path, $owner) = split ' ', $line;
-                       $path = unescape($path);
-                       $owner = unescape($owner);
-                       if (!defined $path) {
-                               next;
-                       }
-                       if (-e "$projectroot/$path/HEAD") {
-                               my $pr = {
-                                       path => $path,
-                                       owner => decode("utf8", $owner, Encode::FB_DEFAULT),
-                               };
-                               push @list, $pr
-                       }
-               }
-               close $fd;
-       }
-       @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
-       return @list;
-}
-
-sub git_get_project_config {
-       my $key = shift;
-
-       return unless ($key);
-       $key =~ s/^gitweb\.//;
-       return if ($key =~ m/\W/);
-
-       my $val = qx($GIT repo-config --get gitweb.$key);
-       return ($val);
-}
-
-sub git_get_project_config_bool {
-       my $val = git_get_project_config (@_);
-       if ($val and $val =~ m/true|yes|on/) {
-               return (1);
-       }
-       return; # implicit false
-}
-
 sub git_project_list {
        my @list = git_read_projects();
        my @projects;
@@ -923,7 +1365,7 @@ sub git_project_list {
                }
                $alternate ^= 1;
                print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$pr->{'path'};a=summary"), -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
-                     "<td>$pr->{'descr'}</td>\n" .
+                     "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
                      "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
                print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" . $pr->{'commit'}{'age_string'} . "</td>\n" .
                      "<td class=\"link\">" .
@@ -937,89 +1379,6 @@ sub git_project_list {
        git_footer_html();
 }
 
-sub read_info_ref {
-       my $type = shift || "";
-       my %refs;
-       # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
-       # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
-       open my $fd, "$projectroot/$project/info/refs" or return;
-       while (my $line = <$fd>) {
-               chomp($line);
-               if ($line =~ m/^([0-9a-fA-F]{40})\t.*$type\/([^\^]+)/) {
-                       if (defined $refs{$1}) {
-                               $refs{$1} .= " / $2";
-                       } else {
-                               $refs{$1} = $2;
-                       }
-               }
-       }
-       close $fd or return;
-       return \%refs;
-}
-
-sub git_read_refs {
-       my $ref_dir = shift;
-       my @reflist;
-
-       my @refs;
-       opendir my $dh, "$projectroot/$project/$ref_dir";
-       while (my $dir = readdir($dh)) {
-               if ($dir =~ m/^\./) {
-                       next;
-               }
-               if (-d "$projectroot/$project/$ref_dir/$dir") {
-                       opendir my $dh2, "$projectroot/$project/$ref_dir/$dir";
-                       my @subdirs = grep !m/^\./, readdir $dh2;
-                       closedir($dh2);
-                       foreach my $subdir (@subdirs) {
-                               push @refs, "$dir/$subdir"
-                       }
-                       next;
-               }
-               push @refs, $dir;
-       }
-       closedir($dh);
-       foreach my $ref_file (@refs) {
-               my $ref_id = git_read_hash("$project/$ref_dir/$ref_file");
-               my $type = git_get_type($ref_id) || next;
-               my %ref_item;
-               my %co;
-               $ref_item{'type'} = $type;
-               $ref_item{'id'} = $ref_id;
-               $ref_item{'epoch'} = 0;
-               $ref_item{'age'} = "unknown";
-               if ($type eq "tag") {
-                       my %tag = git_read_tag($ref_id);
-                       $ref_item{'comment'} = $tag{'comment'};
-                       if ($tag{'type'} eq "commit") {
-                               %co = git_read_commit($tag{'object'});
-                               $ref_item{'epoch'} = $co{'committer_epoch'};
-                               $ref_item{'age'} = $co{'age_string'};
-                       } elsif (defined($tag{'epoch'})) {
-                               my $age = time - $tag{'epoch'};
-                               $ref_item{'epoch'} = $tag{'epoch'};
-                               $ref_item{'age'} = age_string($age);
-                       }
-                       $ref_item{'reftype'} = $tag{'type'};
-                       $ref_item{'name'} = $tag{'name'};
-                       $ref_item{'refid'} = $tag{'object'};
-               } elsif ($type eq "commit"){
-                       %co = git_read_commit($ref_id);
-                       $ref_item{'reftype'} = "commit";
-                       $ref_item{'name'} = $ref_file;
-                       $ref_item{'title'} = $co{'title'};
-                       $ref_item{'refid'} = $ref_id;
-                       $ref_item{'epoch'} = $co{'committer_epoch'};
-                       $ref_item{'age'} = $co{'age_string'};
-               }
-
-               push @reflist, \%ref_item;
-       }
-       # sort tags by age
-       @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
-       return \@reflist;
-}
-
 sub git_summary {
        my $descr = git_read_description($project) || "none";
        my $head = git_read_head($project);
@@ -1047,189 +1406,46 @@ sub git_summary {
 
        my $refs = read_info_ref();
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             "summary".
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$head")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$head")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree")}, "tree") .
-             "<br/><br/>\n" .
-             "</div>\n";
+       git_page_nav('summary','', $head);
+
        print "<div class=\"title\">&nbsp;</div>\n";
        print "<table cellspacing=\"0\">\n" .
              "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
              "<tr><td>owner</td><td>$owner</td></tr>\n" .
              "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
              "</table>\n";
+
        open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project)
-               or die_error(undef, "Open failed.");
-       my (@revlist) = map { chomp; $_ } <$fd>;
+               or die_error(undef, "Open git-rev-list failed.");
+       my @revlist = map { chomp; $_ } <$fd>;
        close $fd;
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog"), -class => "title"}, "shortlog") .
-             "</div>\n";
-       my $i = 16;
-       print "<table cellspacing=\"0\">\n";
-       my $alternate = 0;
-       foreach my $commit (@revlist) {
-               my %co = git_read_commit($commit);
-               my %ad = date_str($co{'author_epoch'});
-               if ($alternate) {
-                       print "<tr class=\"dark\">\n";
-               } else {
-                       print "<tr class=\"light\">\n";
-               }
-               $alternate ^= 1;
-               if ($i-- > 0) {
-                       my $ref = "";
-                       if (defined $refs->{$commit}) {
-                               $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
-                       }
-                       print "<td><i>$co{'age_string'}</i></td>\n" .
-                             "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
-                             "<td>";
-                       if (length($co{'title_short'}) < length($co{'title'})) {
-                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list", -title => "$co{'title'}"},
-                                     "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
-                       } else {
-                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"},
-                                     "<b>" . esc_html($co{'title'}) . "$ref</b>");
-                       }
-                       print "</td>\n" .
-                             "<td class=\"link\">" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
-                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
-                             "</td>\n" .
-                             "</tr>";
-               } else {
-                       print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "...") . "</td>\n" .
-                       "</tr>";
-                       last;
-               }
-       }
-       print "</table\n>";
+       git_header_div('shortlog');
+       git_shortlog_body(\@revlist, 0, 15, $refs,
+                         $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "..."));
 
        my $taglist = git_read_refs("refs/tags");
        if (defined @$taglist) {
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags"), -class => "title"}, "tags") .
-                     "</div>\n";
-               my $i = 16;
-               print "<table cellspacing=\"0\">\n";
-               my $alternate = 0;
-               foreach my $entry (@$taglist) {
-                       my %tag = %$entry;
-                       my $comment_lines = $tag{'comment'};
-                       my $comment = shift @$comment_lines;
-                       if (defined($comment)) {
-                               $comment = chop_str($comment, 30, 5);
-                       }
-                       if ($alternate) {
-                               print "<tr class=\"dark\">\n";
-                       } else {
-                               print "<tr class=\"light\">\n";
-                       }
-                       $alternate ^= 1;
-                       if ($i-- > 0) {
-                               print "<td><i>$tag{'age'}</i></td>\n" .
-                                     "<td>" .
-                                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"), -class => "list"},
-                                     "<b>" . esc_html($tag{'name'}) . "</b>") .
-                                     "</td>\n" .
-                                     "<td>";
-                               if (defined($comment)) {
-                                       print $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, esc_html($comment));
-                               }
-                               print "</td>\n" .
-                                     "<td class=\"link\">";
-                               if ($tag{'type'} eq "tag") {
-                                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag") . " | ";
-                               }
-                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
-                               if ($tag{'reftype'} eq "commit") {
-                                       print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
-                                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
-                               }
-                               print "</td>\n" .
-                                     "</tr>";
-                       } else {
-                               print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "...") . "</td>\n" .
-                               "</tr>";
-                               last;
-                       }
-               }
-               print "</table\n>";
+               git_header_div('tags');
+               git_tags_body($taglist, 0, 15,
+                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
        }
 
        my $headlist = git_read_refs("refs/heads");
        if (defined @$headlist) {
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads"), -class => "title"}, "heads") .
-                     "</div>\n";
-               my $i = 16;
-               print "<table cellspacing=\"0\">\n";
-               my $alternate = 0;
-               foreach my $entry (@$headlist) {
-                       my %tag = %$entry;
-                       if ($alternate) {
-                               print "<tr class=\"dark\">\n";
-                       } else {
-                               print "<tr class=\"light\">\n";
-                       }
-                       $alternate ^= 1;
-                       if ($i-- > 0) {
-                               print "<td><i>$tag{'age'}</i></td>\n" .
-                                     "<td>" .
-                                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"), -class => "list"},
-                                     "<b>" . esc_html($tag{'name'}) . "</b>") .
-                                     "</td>\n" .
-                                     "<td class=\"link\">" .
-                                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
-                                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
-                                     "</td>\n" .
-                                     "</tr>";
-                       } else {
-                               print "<td>" . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "...") . "</td>\n" .
-                               "</tr>";
-                               last;
-                       }
-               }
-               print "</table\n>";
+               git_header_div('heads');
+               git_heads_body($taglist, $head, 0, 15,
+                              $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=heads")}, "..."));
        }
-       git_footer_html();
-}
-
-sub git_print_page_path {
-       my $name = shift;
-       my $type = shift;
 
-       if (!defined $name) {
-               print "<div class=\"page_path\"><b>/</b></div>\n";
-       } elsif ($type =~ "blob") {
-               print "<div class=\"page_path\"><b>" .
-                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;f=$file_name")}, esc_html($name)) . "</b><br/></div>\n";
-       } else {
-               print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
-       }
+       git_footer_html();
 }
 
 sub git_tag {
        my $head = git_read_head($project);
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$head")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$head")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;hb=$head")}, "tree") . "<br/>\n" .
-             "<br/>\n" .
-             "</div>\n";
+       git_page_nav('','', $head,undef,$head);
        my %tag = git_read_tag($hash);
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($tag{'name'})) . "\n" .
-             "</div>\n";
+       git_header_div('commit', esc_html($tag{'name'}), $hash);
        print "<div class=\"title_text\">\n" .
              "<table cellspacing=\"0\">\n" .
              "<tr>\n" .
@@ -1271,21 +1487,13 @@ sub git_blame2 {
                die_error("400 Bad Request", "object is not a blob");
        }
        open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
-               or die_error(undef, "Open failed");
+               or die_error(undef, "Open git-blame failed.");
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base")}, "commit") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") . "<br/>\n";
-       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head") . "<br/>\n";
-       print "</div>\n".
-               "<div>" .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
-               "</div>\n";
+       my $formats_nav =
+               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
+               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
+       git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+       git_header_div('commit', esc_html($co{'title'}), $hash_base);
        git_print_page_path($file_name, $ftype);
        my @rev_color = (qw(light dark));
        my $num_colors = scalar(@rev_color);
@@ -1333,21 +1541,13 @@ sub git_blame {
                        or die_error(undef, "Error lookup file.");
        }
        open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
-               or die_error(undef, "Open failed.");
+               or die_error(undef, "Open git-annotate failed.");
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base")}, "commit") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") . "<br/>\n";
-       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
-               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head") . "<br/>\n";
-       print "</div>\n".
-               "<div>" .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
-               "</div>\n";
+       my $formats_nav =
+               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$hash;hb=$hash_base;f=$file_name")}, "blob") .
+               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;f=$file_name")}, "head");
+       git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+       git_header_div('commit', esc_html($co{'title'}), $hash_base);
        git_print_page_path($file_name);
        print "<div class=\"page_body\">\n";
        print <<HTML;
@@ -1422,182 +1622,30 @@ HTML
 sub git_tags {
        my $head = git_read_head($project);
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$head")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$head")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;hb=$head")}, "tree") . "<br/>\n" .
-             "<br/>\n" .
-             "</div>\n";
-       my $taglist = git_read_refs("refs/tags");
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
-             "</div>\n";
-       print "<table cellspacing=\"0\">\n";
-       my $alternate = 0;
+       git_page_nav('','', $head,undef,$head);
+       git_header_div('summary', $project);
+
+       my $taglist = git_read_refs("refs/tags");
        if (defined @$taglist) {
-               foreach my $entry (@$taglist) {
-                       my %tag = %$entry;
-                       my $comment_lines = $tag{'comment'};
-                       my $comment = shift @$comment_lines;
-                       if (defined($comment)) {
-                               $comment = chop_str($comment, 30, 5);
-                       }
-                       if ($alternate) {
-                               print "<tr class=\"dark\">\n";
-                       } else {
-                               print "<tr class=\"light\">\n";
-                       }
-                       $alternate ^= 1;
-                       print "<td><i>$tag{'age'}</i></td>\n" .
-                             "<td>" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}"), -class => "list"},
-                             "<b>" . esc_html($tag{'name'}) . "</b>") .
-                             "</td>\n" .
-                             "<td>";
-                       if (defined($comment)) {
-                               print $cgi->a({-class => "list", -href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, $comment);
-                       }
-                       print "</td>\n" .
-                             "<td class=\"link\">";
-                       if ($tag{'type'} eq "tag") {
-                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tag;h=$tag{'id'}")}, "tag") . " | ";
-                       }
-                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$tag{'reftype'};h=$tag{'refid'}")}, $tag{'reftype'});
-                       if ($tag{'reftype'} eq "commit") {
-                               print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
-                                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'refid'}")}, "log");
-                       }
-                       print "</td>\n" .
-                             "</tr>";
-               }
+               git_tags_body($taglist);
        }
-       print "</table\n>";
        git_footer_html();
 }
 
 sub git_heads {
        my $head = git_read_head($project);
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$head")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$head")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;hb=$head")}, "tree") . "<br/>\n" .
-             "<br/>\n" .
-             "</div>\n";
+       git_page_nav('','', $head,undef,$head);
+       git_header_div('summary', $project);
+
        my $taglist = git_read_refs("refs/heads");
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
-             "</div>\n";
-       print "<table cellspacing=\"0\">\n";
        my $alternate = 0;
        if (defined @$taglist) {
-               foreach my $entry (@$taglist) {
-                       my %tag = %$entry;
-                       if ($alternate) {
-                               print "<tr class=\"dark\">\n";
-                       } else {
-                               print "<tr class=\"light\">\n";
-                       }
-                       $alternate ^= 1;
-                       print "<td><i>$tag{'age'}</i></td>\n" .
-                             "<td>" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}"), -class => "list"}, "<b>" . esc_html($tag{'name'}) . "</b>") .
-                             "</td>\n" .
-                             "<td class=\"link\">" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$tag{'name'}")}, "shortlog") .
-                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$tag{'name'}")}, "log") .
-                             "</td>\n" .
-                             "</tr>";
-               }
+               git_heads_body($taglist, $head);
        }
-       print "</table\n>";
        git_footer_html();
 }
 
-sub git_get_hash_by_path {
-       my $base = shift;
-       my $path = shift || return undef;
-
-       my $tree = $base;
-
-       open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
-               or die_error(undef, "Open git-ls-tree failed.");
-       my $line = <$fd>;
-       close $fd or return undef;
-
-       #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
-       $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
-       return $3;
-}
-
-sub mimetype_guess_file {
-       my $filename = shift;
-       my $mimemap = shift;
-       -r $mimemap or return undef;
-
-       my %mimemap;
-       open(MIME, $mimemap) or return undef;
-       while (<MIME>) {
-               my ($mime, $exts) = split(/\t+/);
-               my @exts = split(/\s+/, $exts);
-               foreach my $ext (@exts) {
-                       $mimemap{$ext} = $mime;
-               }
-       }
-       close(MIME);
-
-       $filename =~ /\.(.*?)$/;
-       return $mimemap{$1};
-}
-
-sub mimetype_guess {
-       my $filename = shift;
-       my $mime;
-       $filename =~ /\./ or return undef;
-
-       if ($mimetypes_file) {
-               my $file = $mimetypes_file;
-               #$file =~ m#^/# or $file = "$projectroot/$path/$file";
-               $mime = mimetype_guess_file($filename, $file);
-       }
-       $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
-       return $mime;
-}
-
-sub git_blob_plain_mimetype {
-       my $fd = shift;
-       my $filename = shift;
-
-       if ($filename) {
-               my $mime = mimetype_guess($filename);
-               $mime and return $mime;
-       }
-
-       # just in case
-       return $default_blob_plain_mimetype unless $fd;
-
-       if (-T $fd) {
-               return 'text/plain' .
-                      ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
-       } elsif (! $filename) {
-               return 'application/octet-stream';
-       } elsif ($filename =~ m/\.png$/i) {
-               return 'image/png';
-       } elsif ($filename =~ m/\.gif$/i) {
-               return 'image/gif';
-       } elsif ($filename =~ m/\.jpe?g$/i) {
-               return 'image/jpeg';
-       } else {
-               return 'application/octet-stream';
-       }
-}
-
 sub git_blob_plain {
        if (!defined $hash) {
                if (defined $file_name) {
@@ -1609,7 +1657,8 @@ sub git_blob_plain {
                }
        }
        my $type = shift;
-       open my $fd, "-|", $GIT, "cat-file", "blob", $hash or die_error("Couldn't cat $file_name, $hash");
+       open my $fd, "-|", $GIT, "cat-file", "blob", $hash
+               or die_error("Couldn't cat $file_name, $hash");
 
        $type ||= git_blob_plain_mimetype($fd, $file_name);
 
@@ -1641,34 +1690,28 @@ sub git_blob {
                }
        }
        my $have_blame = git_get_project_config_bool ('blame');
-       open my $fd, "-|", $GIT, "cat-file", "blob", $hash or die_error(undef, "Open failed.");
+       open my $fd, "-|", $GIT, "cat-file", "blob", $hash
+               or die_error(undef, "Couldn't cat $file_name, $hash.");
        my $mimetype = git_blob_plain_mimetype($fd, $file_name);
        if ($mimetype !~ m/^text\//) {
                close $fd;
                return git_blob_plain($mimetype);
        }
        git_header_html();
+       my $formats_nav = '';
        if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
-               print "<div class=\"page_nav\">\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base")}, "commit") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") . "<br/>\n";
                if (defined $file_name) {
                        if ($have_blame) {
-                               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") .  " | ";
+                               $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$hash;hb=$hash_base;f=$file_name")}, "blame") . " | ";
                        }
-                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
-                       " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head") . "<br/>\n";
+                       $formats_nav .=
+                               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash;f=$file_name")}, "plain") .
+                               " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=HEAD;f=$file_name")}, "head");
                } else {
-                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain") . "<br/>\n";
+                       $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$hash")}, "plain");
                }
-               print "</div>\n".
-                     "<div>" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) .
-                     "</div>\n";
+               git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+               git_header_div('commit', esc_html($co{'title'}), $hash_base);
        } else {
                print "<div class=\"page_nav\">\n" .
                      "<br/><br/></div>\n" .
@@ -1693,187 +1736,83 @@ sub git_blob {
        git_footer_html();
 }
 
-sub git_tree {
-       if (!defined $hash) {
-               $hash = git_read_head($project);
-               if (defined $file_name) {
-                       my $base = $hash_base || $hash;
-                       $hash = git_get_hash_by_path($base, $file_name, "tree");
-               }
-               if (!defined $hash_base) {
-                       $hash_base = $hash;
-               }
-       }
-       $/ = "\0";
-       open my $fd, "-|", $GIT, "ls-tree", '-z', $hash or die_error(undef, "Open git-ls-tree failed.");
-       chomp (my (@entries) = <$fd>);
-       close $fd or die_error(undef, "Reading tree failed.");
-       $/ = "\n";
-
-       my $refs = read_info_ref();
-       my $ref = "";
-       if (defined $refs->{$hash_base}) {
-               $ref = " <span class=\"tag\">" . esc_html($refs->{$hash_base}) . "</span>";
-       }
-       git_header_html();
-       my $base_key = "";
-       my $base = "";
-       if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
-               $base_key = ";hb=$hash_base";
-               print "<div class=\"page_nav\">\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash_base")}, "shortlog") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash_base")}, "log") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base")}, "commit") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
-                     " | tree" .
-                     "<br/><br/>\n" .
-                     "</div>\n";
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'}) . $ref) . "\n" .
-                     "</div>\n";
-       } else {
-               print "<div class=\"page_nav\">\n";
-               print "<br/><br/></div>\n";
-               print "<div class=\"title\">$hash</div>\n";
-       }
-       if (defined $file_name) {
-               $base = esc_html("$file_name/");
-       }
-       git_print_page_path($file_name);
-       print "<div class=\"page_body\">\n";
-       print "<table cellspacing=\"0\">\n";
-       my $alternate = 0;
-       foreach my $line (@entries) {
-               #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
-               $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
-               my $t_mode = $1;
-               my $t_type = $2;
-               my $t_hash = $3;
-               my $t_name = validate_input($4);
-               if ($alternate) {
-                       print "<tr class=\"dark\">\n";
-               } else {
-                       print "<tr class=\"light\">\n";
-               }
-               $alternate ^= 1;
-               print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
-               if ($t_type eq "blob") {
-                       print "<td class=\"list\">" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
-                             "</td>\n" .
-                             "<td class=\"link\">" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
-#                            " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
-                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
-                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
-                             "</td>\n";
-               } elsif ($t_type eq "tree") {
-                       print "<td class=\"list\">" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
-                             "</td>\n" .
-                             "<td class=\"link\">" .
-                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
-                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
-                             "</td>\n";
-               }
-               print "</tr>\n";
-       }
-       print "</table>\n" .
-             "</div>";
-       git_footer_html();
-}
-
-sub git_rss {
-       # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
-       open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
-               or die_error(undef, "Open failed.");
-       my (@revlist) = map { chomp; $_ } <$fd>;
-       close $fd or die_error(undef, "Reading rev-list failed.");
-       print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
-       print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
-             "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
-       print "<channel>\n";
-       print "<title>$project</title>\n".
-             "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
-             "<description>$project log</description>\n".
-             "<language>en</language>\n";
-
-       for (my $i = 0; $i <= $#revlist; $i++) {
-               my $commit = $revlist[$i];
-               my %co = git_read_commit($commit);
-               # we read 150, we always show 30 and the ones more recent than 48 hours
-               if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
-                       last;
-               }
-               my %cd = date_str($co{'committer_epoch'});
-               open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
-               my @difftree = map { chomp; $_ } <$fd>;
-               close $fd or next;
-               print "<item>\n" .
-                     "<title>" .
-                     sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
-                     "</title>\n" .
-                     "<author>" . esc_html($co{'author'}) . "</author>\n" .
-                     "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
-                     "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
-                     "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
-                     "<description>" . esc_html($co{'title'}) . "</description>\n" .
-                     "<content:encoded>" .
-                     "<![CDATA[\n";
-               my $comment = $co{'comment'};
-               foreach my $line (@$comment) {
-                       $line = decode("utf8", $line, Encode::FB_DEFAULT);
-                       print "$line<br/>\n";
-               }
-               print "<br/>\n";
-               foreach my $line (@difftree) {
-                       if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
-                               next;
-                       }
-                       my $file = validate_input(unquote($7));
-                       $file = decode("utf8", $file, Encode::FB_DEFAULT);
-                       print "$file<br/>\n";
-               }
-               print "]]>\n" .
-                     "</content:encoded>\n" .
-                     "</item>\n";
-       }
-       print "</channel></rss>";
-}
-
-sub git_opml {
-       my @list = git_read_projects();
-
-       print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
-       print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
-             "<opml version=\"1.0\">\n".
-             "<head>".
-             "  <title>$site_name Git OPML Export</title>\n".
-             "</head>\n".
-             "<body>\n".
-             "<outline text=\"git RSS feeds\">\n";
-
-       foreach my $pr (@list) {
-               my %proj = %$pr;
-               my $head = git_read_head($proj{'path'});
-               if (!defined $head) {
-                       next;
+sub git_tree {
+       if (!defined $hash) {
+               $hash = git_read_head($project);
+               if (defined $file_name) {
+                       my $base = $hash_base || $hash;
+                       $hash = git_get_hash_by_path($base, $file_name, "tree");
                }
-               $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
-               my %co = git_read_commit($head);
-               if (!%co) {
-                       next;
+               if (!defined $hash_base) {
+                       $hash_base = $hash;
                }
+       }
+       $/ = "\0";
+       open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
+               or die_error(undef, "Open git-ls-tree failed.");
+       my @entries = map { chomp; $_ } <$fd>;
+       close $fd or die_error(undef, "Reading tree failed.");
+       $/ = "\n";
 
-               my $path = esc_html(chop_str($proj{'path'}, 25, 5));
-               my $rss  = "$my_url?p=$proj{'path'};a=rss";
-               my $html = "$my_url?p=$proj{'path'};a=summary";
-               print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
+       my $refs = read_info_ref();
+       my $ref = git_get_referencing($refs, $hash_base);
+       git_header_html();
+       my $base_key = "";
+       my $base = "";
+       if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
+               $base_key = ";hb=$hash_base";
+               git_page_nav('tree','', $hash_base);
+               git_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
+       } else {
+               print "<div class=\"page_nav\">\n";
+               print "<br/><br/></div>\n";
+               print "<div class=\"title\">$hash</div>\n";
        }
-       print "</outline>\n".
-             "</body>\n".
-             "</opml>\n";
+       if (defined $file_name) {
+               $base = esc_html("$file_name/");
+       }
+       git_print_page_path($file_name);
+       print "<div class=\"page_body\">\n";
+       print "<table cellspacing=\"0\">\n";
+       my $alternate = 0;
+       foreach my $line (@entries) {
+               #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
+               $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
+               my $t_mode = $1;
+               my $t_type = $2;
+               my $t_hash = $3;
+               my $t_name = validate_input($4);
+               if ($alternate) {
+                       print "<tr class=\"dark\">\n";
+               } else {
+                       print "<tr class=\"light\">\n";
+               }
+               $alternate ^= 1;
+               print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
+               if ($t_type eq "blob") {
+                       print "<td class=\"list\">" .
+                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name"), -class => "list"}, esc_html($t_name)) .
+                             "</td>\n" .
+                             "<td class=\"link\">" .
+                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;h=$t_hash$base_key;f=$base$t_name")}, "blob") .
+#                            " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;h=$t_hash$base_key;f=$base$t_name")}, "blame") .
+                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;h=$t_hash;hb=$hash_base;f=$base$t_name")}, "history") .
+                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob_plain;h=$t_hash;f=$base$t_name")}, "raw") .
+                             "</td>\n";
+               } elsif ($t_type eq "tree") {
+                       print "<td class=\"list\">" .
+                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, esc_html($t_name)) .
+                             "</td>\n" .
+                             "<td class=\"link\">" .
+                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$t_hash$base_key;f=$base$t_name")}, "tree") .
+                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=history;hb=$hash_base;f=$base$t_name")}, "history") .
+                             "</td>\n";
+               }
+               print "</tr>\n";
+       }
+       print "</table>\n" .
+             "</div>";
+       git_footer_html();
 }
 
 sub git_log {
@@ -1885,59 +1824,34 @@ sub git_log {
                $page = 0;
        }
        my $refs = read_info_ref();
-       git_header_html();
-       print "<div class=\"page_nav\">\n";
-       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash")}, "shortlog") .
-             " | log" .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$hash;hb=$hash")}, "tree") . "<br/>\n";
 
        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
-       open my $fd, "-|", $GIT, "rev-list", $limit, $hash or die_error(undef, "Open failed.");
-       my (@revlist) = map { chomp; $_ } <$fd>;
+       open my $fd, "-|", $GIT, "rev-list", $limit, $hash
+               or die_error(undef, "Open git-rev-list failed.");
+       my @revlist = map { chomp; $_ } <$fd>;
        close $fd;
 
-       if ($hash ne $head || $page) {
-               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "HEAD");
-       } else {
-               print "HEAD";
-       }
-       if ($page > 0) {
-               print " &sdot; " .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash;pg=" . ($page-1)), -accesskey => "p", -title => "Alt-p"}, "prev");
-       } else {
-               print " &sdot; prev";
-       }
-       if ($#revlist >= (100 * ($page+1)-1)) {
-               print " &sdot; " .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash;pg=" . ($page+1)), -accesskey => "n", -title => "Alt-n"}, "next");
-       } else {
-               print " &sdot; next";
-       }
-       print "<br/>\n" .
-             "</div>\n";
+       my $paging_nav = git_get_paging_nav('log', $hash, $head, $page, $#revlist);
+
+       git_header_html();
+       git_page_nav('log','', $hash,undef,undef, $paging_nav);
+
        if (!@revlist) {
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
-                     "</div>\n";
                my %co = git_read_commit($hash);
+
+               git_header_div('summary', $project);
                print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
        }
        for (my $i = ($page * 100); $i <= $#revlist; $i++) {
                my $commit = $revlist[$i];
-               my $ref = "";
-               if (defined $refs->{$commit}) {
-                       $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
-               }
+               my $ref = git_get_referencing($refs, $commit);
                my %co = git_read_commit($commit);
                next if !%co;
                my %ad = date_str($co{'author_epoch'});
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "title"},
-                     "<span class=\"age\">$co{'age_string'}</span>" . esc_html($co{'title'}) . $ref) . "\n";
-               print "</div>\n";
+               git_header_div('commit',
+                                                                        "<span class=\"age\">$co{'age_string'}</span>" .
+                                                                        esc_html($co{'title'}) . $ref,
+                                                                        $commit);
                print "<div class=\"title_text\">\n" .
                      "<div class=\"log_link\">\n" .
                      $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
@@ -1979,14 +1893,13 @@ sub git_commit {
        my %ad = date_str($co{'author_epoch'}, $co{'author_tz'});
        my %cd = date_str($co{'committer_epoch'}, $co{'committer_tz'});
 
-       my @difftree;
        my $parent = $co{'parent'};
        if (!defined $parent) {
                $parent = "--root";
        }
        open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
-               or die_error(undef, "Open failed.");
-       @difftree = map { chomp; $_ } <$fd>;
+               or die_error(undef, "Open git-diff-tree failed.");
+       my @difftree = map { chomp; $_ } <$fd>;
        close $fd or die_error(undef, "Reading git-diff-tree failed.");
 
        # non-textual hash id's can be cached
@@ -1995,35 +1908,21 @@ sub git_commit {
                $expires = "+1d";
        }
        my $refs = read_info_ref();
-       my $ref = "";
-       if (defined $refs->{$co{'id'}}) {
-               $ref = " <span class=\"tag\">" . esc_html($refs->{$co{'id'}}) . "</span>";
-       }
-       git_header_html(undef, $expires);
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash")}, "log") .
-             " | commit";
-       if (defined $co{'parent'}) {
-               print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash")}, "commitdiff");
-       }
-       print " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") . "\n" .
-               "<br/>\n";
+       my $ref = git_get_referencing($refs, $co{'id'});
+       my $formats_nav = '';
        if (defined $file_name && defined $co{'parent'}) {
                my $parent = $co{'parent'};
-               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame") . "\n";
+               $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
        }
-       print "<br/></div>\n";
+       git_header_html(undef, $expires);
+       git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
+                                                        $hash, $co{'tree'}, $hash,
+                                                        $formats_nav);
 
        if (defined $co{'parent'}) {
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash"), -class => "title"}, esc_html($co{'title'}) . $ref) . "\n" .
-                     "</div>\n";
+               git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
        } else {
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
-                     "</div>\n";
+               git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
        }
        print "<div class=\"title_text\">\n" .
              "<table cellspacing=\"0\">\n";
@@ -2186,19 +2085,10 @@ sub git_blobdiff {
        mkdir($git_temp, 0700);
        git_header_html();
        if (defined $hash_base && (my %co = git_read_commit($hash_base))) {
-               print "<div class=\"page_nav\">\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base")}, "commit") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") .
-                     "<br/>\n";
-               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain") .
-                     "</div>\n";
-               print "<div>\n" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) . "\n" .
-                     "</div>\n";
+               my $formats_nav =
+                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blobdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
+               git_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+               git_header_div('commit', esc_html($co{'title'}), $hash_base);
        } else {
                print "<div class=\"page_nav\">\n" .
                      "<br/><br/></div>\n" .
@@ -2232,8 +2122,8 @@ sub git_commitdiff {
                $hash_parent = $co{'parent'};
        }
        open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
-               or die_error(undef, "Open failed.");
-       my (@difftree) = map { chomp; $_ } <$fd>;
+               or die_error(undef, "Open git-diff-tree failed.");
+       my @difftree = map { chomp; $_ } <$fd>;
        close $fd or die_error(undef, "Reading diff-tree failed.");
 
        # non-textual hash id's can be cached
@@ -2242,23 +2132,12 @@ sub git_commitdiff {
                $expires = "+1d";
        }
        my $refs = read_info_ref();
-       my $ref = "";
-       if (defined $refs->{$co{'id'}}) {
-               $ref = " <span class=\"tag\">" . esc_html($refs->{$co{'id'}}) . "</span>";
-       }
+       my $ref = git_get_referencing($refs, $co{'id'});
+       my $formats_nav =
+               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain");
        git_header_html(undef, $expires);
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash")}, "commit") .
-             " | commitdiff" .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") . "<br/>\n";
-       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff_plain;h=$hash;hp=$hash_parent")}, "plain") . "\n" .
-             "</div>\n";
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'}) . $ref) . "\n" .
-             "</div>\n";
+       git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
+       git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
        print "<div class=\"page_body\">\n";
        my $comment = $co{'comment'};
        my $empty = 0;
@@ -2323,15 +2202,15 @@ sub git_commitdiff {
 sub git_commitdiff_plain {
        mkdir($git_temp, 0700);
        open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
-               or die_error(undef, "Open failed.");
-       my (@difftree) = map { chomp; $_ } <$fd>;
+               or die_error(undef, "Open git-diff-tree failed.");
+       my @difftree = map { chomp; $_ } <$fd>;
        close $fd or die_error(undef, "Reading diff-tree failed.");
 
        # try to figure out the next tag after this commit
        my $tagname;
        my $refs = read_info_ref("tags");
        open $fd, "-|", $GIT, "rev-list", "HEAD";
-       chomp (my (@commits) = <$fd>);
+       my @commits = map { chomp; $_ } <$fd>;
        close $fd;
        foreach my $commit (@commits) {
                if (defined $refs->{$commit}) {
@@ -2387,18 +2266,8 @@ sub git_history {
        }
        my $refs = read_info_ref();
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash_base")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash_base")}, "tree") .
-             "<br/><br/>\n" .
-             "</div>\n";
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash_base"), -class => "title"}, esc_html($co{'title'})) . "\n" .
-             "</div>\n";
+       git_page_nav('','', $hash_base,$co{'tree'},$hash_base);
+       git_header_div('commit', esc_html($co{'title'}), $hash_base);
        if (!defined $hash && defined $file_name) {
                $hash = git_get_hash_by_path($hash_base, $file_name);
        }
@@ -2408,7 +2277,7 @@ sub git_history {
        git_print_page_path($file_name, $ftype);
 
        open my $fd, "-|",
-               $GIT, "rev-list", "--full-history", $hash_base, "--", "\'$file_name\'";
+               $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
        print "<table cellspacing=\"0\">\n";
        my $alternate = 0;
        while (my $line = <$fd>) {
@@ -2418,10 +2287,7 @@ sub git_history {
                        if (!%co) {
                                next;
                        }
-                       my $ref = "";
-                       if (defined $refs->{$commit}) {
-                               $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
-                       }
+                       my $ref = git_get_referencing($refs, $commit);
                        if ($alternate) {
                                print "<tr class=\"dark\">\n";
                        } else {
@@ -2478,19 +2344,9 @@ sub git_search {
                $pickaxe_search = 1;
        }
        git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary;h=$hash")}, "summary") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "shortlog") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$co{'tree'};hb=$hash")}, "tree") .
-             "<br/><br/>\n" .
-             "</div>\n";
+       git_page_nav('','', $hash,$co{'tree'},$hash);
+       git_header_div('commit', esc_html($co{'title'}), $hash);
 
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash"), -class => "title"}, esc_html($co{'title'})) . "\n" .
-             "</div>\n";
        print "<table cellspacing=\"0\">\n";
        my $alternate = 0;
        if ($commit_search) {
@@ -2606,82 +2462,122 @@ sub git_shortlog {
                $page = 0;
        }
        my $refs = read_info_ref();
-       git_header_html();
-       print "<div class=\"page_nav\">\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
-             " | shortlog" .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=log;h=$hash")}, "log") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$hash")}, "commit") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$hash")}, "commitdiff") .
-             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$hash;hb=$hash")}, "tree") . "<br/>\n";
 
        my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
-       open my $fd, "-|", $GIT, "rev-list", $limit, $hash or die_error(undef, "Open failed.");
-       my (@revlist) = map { chomp; $_ } <$fd>;
+       open my $fd, "-|", $GIT, "rev-list", $limit, $hash
+               or die_error(undef, "Open git-rev-list failed.");
+       my @revlist = map { chomp; $_ } <$fd>;
        close $fd;
 
-       if ($hash ne $head || $page) {
-               print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog")}, "HEAD");
-       } else {
-               print "HEAD";
-       }
-       if ($page > 0) {
-               print " &sdot; " .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page-1)), -accesskey => "p", -title => "Alt-p"}, "prev");
-       } else {
-               print " &sdot; prev";
-       }
+       my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
+       my $next_link = '';
        if ($#revlist >= (100 * ($page+1)-1)) {
-               print " &sdot; " .
-               $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)), -accesskey => "n", -title => "Alt-n"}, "next");
-       } else {
-               print " &sdot; next";
+               $next_link =
+                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
+                                -title => "Alt-n"}, "next");
        }
-       print "<br/>\n" .
-             "</div>\n";
-       print "<div>\n" .
-             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary"), -class => "title"}, "&nbsp;") .
-             "</div>\n";
-       print "<table cellspacing=\"0\">\n";
-       my $alternate = 0;
-       for (my $i = ($page * 100); $i <= $#revlist; $i++) {
+
+
+       git_header_html();
+       git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
+       git_header_div('summary', $project);
+
+       git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
+
+       git_footer_html();
+}
+
+## ......................................................................
+## feeds (RSS, OPML)
+
+sub git_rss {
+       # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
+       open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project)
+               or die_error(undef, "Open git-rev-list failed.");
+       my @revlist = map { chomp; $_ } <$fd>;
+       close $fd or die_error(undef, "Reading rev-list failed.");
+       print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
+       print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
+             "<rss version=\"2.0\" xmlns:content=\"http://purl.org/rss/1.0/modules/content/\">\n";
+       print "<channel>\n";
+       print "<title>$project</title>\n".
+             "<link>" . esc_html("$my_url?p=$project;a=summary") . "</link>\n".
+             "<description>$project log</description>\n".
+             "<language>en</language>\n";
+
+       for (my $i = 0; $i <= $#revlist; $i++) {
                my $commit = $revlist[$i];
-               my $ref = "";
-               if (defined $refs->{$commit}) {
-                       $ref = " <span class=\"tag\">" . esc_html($refs->{$commit}) . "</span>";
-               }
                my %co = git_read_commit($commit);
-               my %ad = date_str($co{'author_epoch'});
-               if ($alternate) {
-                       print "<tr class=\"dark\">\n";
-               } else {
-                       print "<tr class=\"light\">\n";
+               # we read 150, we always show 30 and the ones more recent than 48 hours
+               if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
+                       last;
                }
-               $alternate ^= 1;
-               print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
-                     "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
-                     "<td>";
-               if (length($co{'title_short'}) < length($co{'title'})) {
-                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list", -title => "$co{'title'}"},
-                             "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
-               } else {
-                       print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit"), -class => "list"},
-                             "<b>" . esc_html($co{'title_short'}) . "$ref</b>");
+               my %cd = date_str($co{'committer_epoch'});
+               open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
+               my @difftree = map { chomp; $_ } <$fd>;
+               close $fd or next;
+               print "<item>\n" .
+                     "<title>" .
+                     sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
+                     "</title>\n" .
+                     "<author>" . esc_html($co{'author'}) . "</author>\n" .
+                     "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
+                     "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
+                     "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
+                     "<description>" . esc_html($co{'title'}) . "</description>\n" .
+                     "<content:encoded>" .
+                     "<![CDATA[\n";
+               my $comment = $co{'comment'};
+               foreach my $line (@$comment) {
+                       $line = decode("utf8", $line, Encode::FB_DEFAULT);
+                       print "$line<br/>\n";
                }
-               print "</td>\n" .
-                     "<td class=\"link\">" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commit;h=$commit")}, "commit") .
-                     " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=commitdiff;h=$commit")}, "commitdiff") .
-                     "</td>\n" .
-                     "</tr>";
+               print "<br/>\n";
+               foreach my $line (@difftree) {
+                       if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
+                               next;
+                       }
+                       my $file = validate_input(unquote($7));
+                       $file = decode("utf8", $file, Encode::FB_DEFAULT);
+                       print "$file<br/>\n";
+               }
+               print "]]>\n" .
+                     "</content:encoded>\n" .
+                     "</item>\n";
        }
-       if ($#revlist >= (100 * ($page+1)-1)) {
-               print "<tr>\n" .
-                     "<td>" .
-                     $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)), -title => "Alt-n"}, "next") .
-                     "</td>\n" .
-                     "</tr>\n";
+       print "</channel></rss>";
+}
+
+sub git_opml {
+       my @list = git_read_projects();
+
+       print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
+       print "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n".
+             "<opml version=\"1.0\">\n".
+             "<head>".
+             "  <title>$site_name Git OPML Export</title>\n".
+             "</head>\n".
+             "<body>\n".
+             "<outline text=\"git RSS feeds\">\n";
+
+       foreach my $pr (@list) {
+               my %proj = %$pr;
+               my $head = git_read_head($proj{'path'});
+               if (!defined $head) {
+                       next;
+               }
+               $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
+               my %co = git_read_commit($head);
+               if (!%co) {
+                       next;
+               }
+
+               my $path = esc_html(chop_str($proj{'path'}, 25, 5));
+               my $rss  = "$my_url?p=$proj{'path'};a=rss";
+               my $html = "$my_url?p=$proj{'path'};a=summary";
+               print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
        }
-       print "</table\n>";
-       git_footer_html();
+       print "</outline>\n".
+             "</body>\n".
+             "</opml>\n";
 }