gitweb: when showing history of a tree, show tree link not blob
[gitweb.git] / gitweb / gitweb.cgi
index 10128690484e060113088297ea85059b8ec48bb2..3cd4ce2a01e36b3e651769dcbff16776a0645f4b 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 {
@@ -254,29 +228,615 @@ sub esc_html {
        return $str;
 }
 
-# git may return quoted and escaped filenames
-sub unquote {
-       my $str = shift;
-       if ($str =~ m/^"(.*)"$/) {
-               $str = $1;
-               $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
+# git may return quoted and escaped filenames
+sub unquote {
+       my $str = shift;
+       if ($str =~ m/^"(.*)"$/) {
+               $str = $1;
+               $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
+       }
+       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 $age = shift;
+
+       if ($age < 60*60*2) {
+               return "age0";
+       } elsif ($age < 60*60*24*2) {
+               return "age1";
+       } else {
+               return "age2";
+       }
+}
+
+# convert age in seconds to "nn units ago" string
+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;
+}
+
+# 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 {
+                       return '-rw-r--r--';
+               };
+       } else {
+               return '----------';
+       }
+}
+
+# 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 {
+               return "unknown";
+       }
+}
+
+## ----------------------------------------------------------------------
+## functions returning short HTML fragments, or transforming HTML fragments
+## which don't beling to other sections
+
+# 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 $line;
+}
+
+# format marker of refs pointing to given object
+sub git_get_referencing {
+       my ($refs, $id) = @_;
+
+       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'};
+       my $retval = undef;
+       $ENV{'GIT_DIR'} = "$projectroot/$project";
+       if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
+               my $head = <$fd>;
+               close $fd;
+               if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
+                       $retval = $1;
+               }
+       }
+       if (defined $oENV) {
+               $ENV{'GIT_DIR'} = $oENV;
+       }
+       return $retval;
+}
+
+# get type of given object
+sub git_get_type {
+       my $hash = shift;
+
+       open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
+       my $type = <$fd>;
+       close $fd or return;
+       chomp $type;
+       return $type;
+}
+
+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
+}
+
+# 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})$/) {
+                       $tag{'object'} = $1;
+               } elsif ($line =~ m/^type (.+)$/) {
+                       $tag{'type'} = $1;
+               } elsif ($line =~ m/^tag (.+)$/) {
+                       $tag{'name'} = $1;
+               } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
+                       $tag{'author'} = $1;
+                       $tag{'epoch'} = $2;
+                       $tag{'tz'} = $3;
+               } elsif ($line =~ m/--BEGIN/) {
+                       push @comment, $line;
+                       last;
+               } elsif ($line eq "") {
+                       last;
+               }
+       }
+       push @comment, <$fd>;
+       $tag{'comment'} = \@comment;
+       close $fd or return;
+       if (!defined $tag{'name'}) {
+               return
+       };
+       return %tag
+}
+
+sub git_read_commit {
+       my $commit_id = shift;
+       my $commit_text = shift;
+
+       my @commit_lines;
+       my %co;
+
+       if (defined $commit_text) {
+               @commit_lines = @$commit_text;
+       } else {
+               $/ = "\0";
+               open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
+               @commit_lines = split '\n', <$fd>;
+               close $fd or return;
+               $/ = "\n";
+               pop @commit_lines;
+       }
+       my $header = shift @commit_lines;
+       if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
+               return;
+       }
+       ($co{'id'}, my @parents) = split ' ', $header;
+       $co{'parents'} = \@parents;
+       $co{'parent'} = $parents[0];
+       while (my $line = shift @commit_lines) {
+               last if $line eq "\n";
+               if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
+                       $co{'tree'} = $1;
+               } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
+                       $co{'author'} = $1;
+                       $co{'author_epoch'} = $2;
+                       $co{'author_tz'} = $3;
+                       if ($co{'author'} =~ m/^([^<]+) </) {
+                               $co{'author_name'} = $1;
+                       } else {
+                               $co{'author_name'} = $co{'author'};
+                       }
+               } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
+                       $co{'committer'} = $1;
+                       $co{'committer_epoch'} = $2;
+                       $co{'committer_tz'} = $3;
+                       $co{'committer_name'} = $co{'committer'};
+                       $co{'committer_name'} =~ s/ <.*//;
+               }
+       }
+       if (!defined $co{'tree'}) {
+               return;
+       };
+
+       foreach my $title (@commit_lines) {
+               $title =~ s/^    //;
+               if ($title ne "") {
+                       $co{'title'} = chop_str($title, 80, 5);
+                       # remove leading stuff of merges to make the interesting part visible
+                       if (length($title) > 50) {
+                               $title =~ s/^Automatic //;
+                               $title =~ s/^merge (of|with) /Merge ... /i;
+                               if (length($title) > 50) {
+                                       $title =~ s/(http|rsync):\/\///;
+                               }
+                               if (length($title) > 50) {
+                                       $title =~ s/(master|www|rsync)\.//;
+                               }
+                               if (length($title) > 50) {
+                                       $title =~ s/kernel.org:?//;
+                               }
+                               if (length($title) > 50) {
+                                       $title =~ s/\/pub\/scm//;
+                               }
+                       }
+                       $co{'title_short'} = chop_str($title, 50, 5);
+                       last;
+               }
+       }
+       # remove added spaces
+       foreach my $line (@commit_lines) {
+               $line =~ s/^    //;
+       }
+       $co{'comment'} = \@commit_lines;
+
+       my $age = time - $co{'committer_epoch'};
+       $co{'age'} = $age;
+       $co{'age_string'} = age_string($age);
+       my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
+       if ($age > 60*60*24*7*2) {
+               $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+               $co{'age_string_age'} = $co{'age_string'};
+       } else {
+               $co{'age_string_date'} = $co{'age_string'};
+               $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+       }
+       return %co;
+}
+
+## ......................................................................
+## parse to array of hashes functions
+
+sub git_read_refs {
+       my $ref_dir = shift;
+       my @reflist;
+
+       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");
+
+       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;
+}
+
+## ----------------------------------------------------------------------
+## 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+/);
+               if (defined $exts) {
+                       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;
        }
-       return $str;
-}
 
-# CSS class for given age value (in seconds)
-sub age_class {
-       my $age = shift;
+       # just in case
+       return $default_blob_plain_mimetype unless $fd;
 
-       if ($age < 60*60*2) {
-               return "age0";
-       } elsif ($age < 60*60*24*2) {
-               return "age1";
+       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 "age2";
+               return 'application/octet-stream';
        }
 }
 
+## ======================================================================
+## functions printing HTML: header, footer, error page
+
 sub git_header_html {
        my $status = shift || "200 OK";
        my $expires = shift;
@@ -386,6 +946,9 @@ sub die_error {
        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
@@ -420,19 +983,6 @@ sub git_page_nav {
              "</div>\n";
 }
 
-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 : $action) . "\n" .
-             "</div>\n";
-}
-
 sub git_get_paging_nav {
        my ($action, $hash, $head, $page, $nrevs) = @_;
        my $paging_nav;
@@ -463,216 +1013,192 @@ sub git_get_paging_nav {
        return $paging_nav;
 }
 
-sub git_get_type {
-       my $hash = shift;
-
-       open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
-       my $type = <$fd>;
-       close $fd or return;
-       chomp $type;
-       return $type;
-}
-
-sub git_read_head {
-       my $project = shift;
-       my $oENV = $ENV{'GIT_DIR'};
-       my $retval = undef;
-       $ENV{'GIT_DIR'} = "$projectroot/$project";
-       if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
-               my $head = <$fd>;
-               close $fd;
-               if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
-                       $retval = $1;
-               }
-       }
-       if (defined $oENV) {
-               $ENV{'GIT_DIR'} = $oENV;
-       }
-       return $retval;
-}
-
-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;
+## ......................................................................
+## functions printing or outputting HTML: div
 
-       open my $fd, "$projectroot/$path/description" or return undef;
-       my $descr = <$fd>;
-       close $fd;
-       chomp $descr;
-       return $descr;
-}
+sub git_header_div {
+       my ($action, $title, $hash, $hash_base) = @_;
+       my $rest = '';
 
-sub git_read_tag {
-       my $tag_id = shift;
-       my %tag;
-       my @comment;
+       $rest .= ";h=$hash" if $hash;
+       $rest .= ";hb=$hash_base" if $hash_base;
 
-       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})$/) {
-                       $tag{'object'} = $1;
-               } elsif ($line =~ m/^type (.+)$/) {
-                       $tag{'type'} = $1;
-               } elsif ($line =~ m/^tag (.+)$/) {
-                       $tag{'name'} = $1;
-               } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
-                       $tag{'author'} = $1;
-                       $tag{'epoch'} = $2;
-                       $tag{'tz'} = $3;
-               } elsif ($line =~ m/--BEGIN/) {
-                       push @comment, $line;
-                       last;
-               } elsif ($line eq "") {
-                       last;
-               }
-       }
-       push @comment, <$fd>;
-       $tag{'comment'} = \@comment;
-       close $fd or return;
-       if (!defined $tag{'name'}) {
-               return
-       };
-       return %tag
+       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 age_string {
-       my $age = shift;
-       my $age_str;
+sub git_print_page_path {
+       my $name = shift;
+       my $type = shift;
 
-       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";
+       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 {
-               $age_str .= " right now";
+               print "<div class=\"page_path\"><b>" . esc_html($name) . "</b><br/></div>\n";
        }
-       return $age_str;
 }
 
-sub git_read_commit {
-       my $commit_id = shift;
-       my $commit_text = shift;
+## ......................................................................
+## functions printing large fragments of HTML
 
-       my @commit_lines;
-       my %co;
+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);
 
-       if (defined $commit_text) {
-               @commit_lines = @$commit_text;
-       } else {
-               $/ = "\0";
-               open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id or return;
-               @commit_lines = split '\n', <$fd>;
-               close $fd or return;
-               $/ = "\n";
-               pop @commit_lines;
-       }
-       my $header = shift @commit_lines;
-       if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
-               return;
-       }
-       ($co{'id'}, my @parents) = split ' ', $header;
-       $co{'parents'} = \@parents;
-       $co{'parent'} = $parents[0];
-       while (my $line = shift @commit_lines) {
-               last if $line eq "\n";
-               if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
-                       $co{'tree'} = $1;
-               } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
-                       $co{'author'} = $1;
-                       $co{'author_epoch'} = $2;
-                       $co{'author_tz'} = $3;
-                       if ($co{'author'} =~ m/^([^<]+) </) {
-                               $co{'author_name'} = $1;
-                       } else {
-                               $co{'author_name'} = $co{'author'};
-                       }
-               } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
-                       $co{'committer'} = $1;
-                       $co{'committer_epoch'} = $2;
-                       $co{'committer_tz'} = $3;
-                       $co{'committer_name'} = $co{'committer'};
-                       $co{'committer_name'} =~ s/ <.*//;
+       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";
                }
-       }
-       if (!defined $co{'tree'}) {
-               return;
-       };
-
-       foreach my $title (@commit_lines) {
-               $title =~ s/^    //;
-               if ($title ne "") {
-                       $co{'title'} = chop_str($title, 80, 5);
-                       # remove leading stuff of merges to make the interesting part visible
-                       if (length($title) > 50) {
-                               $title =~ s/^Automatic //;
-                               $title =~ s/^merge (of|with) /Merge ... /i;
-                               if (length($title) > 50) {
-                                       $title =~ s/(http|rsync):\/\///;
-                               }
-                               if (length($title) > 50) {
-                                       $title =~ s/(master|www|rsync)\.//;
-                               }
-                               if (length($title) > 50) {
-                                       $title =~ s/kernel.org:?//;
-                               }
-                               if (length($title) > 50) {
-                                       $title =~ s/\/pub\/scm//;
-                               }
+               $alternate ^= 1;
+               # git_summary() used print "<td><i>$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);
                        }
-                       $co{'title_short'} = chop_str($title, 50, 5);
-                       last;
                }
+               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>";
        }
-       # remove added spaces
-       foreach my $line (@commit_lines) {
-               $line =~ s/^    //;
+       if (defined $extra) {
+               print "<tr>\n" .
+                     "<td colspan=\"5\">$extra</td>\n" .
+                     "</tr>\n";
        }
-       $co{'comment'} = \@commit_lines;
+       print "</table>\n";
+}
 
-       my $age = time - $co{'committer_epoch'};
-       $co{'age'} = $age;
-       $co{'age_string'} = age_string($age);
-       my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
-       if ($age > 60*60*24*7*2) {
-               $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
-               $co{'age_string_age'} = $co{'age_string'};
-       } else {
-               $co{'age_string_date'} = $co{'age_string'};
-               $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+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>";
        }
-       return %co;
+       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 $from_name = shift;
@@ -744,190 +1270,30 @@ sub git_diff_print {
                unlink($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/;
-               }
-       }
-       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;
-}
-
-# git-logo (cached in browser for one day)
-sub git_logo {
-       binmode STDOUT, ':raw';
-       print $cgi->header(-type => 'image/png', -expires => '+1d');
-       # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
-       print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
-               "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
-               "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
-               "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
-               "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
-               "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
-               "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
-               "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
-               "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
-               "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
-               "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
-               "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
-               "\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
+
+
+## ======================================================================
+## ======================================================================
+## actions
+
+# git-logo (cached in browser for one day)
+sub git_logo {
+       binmode STDOUT, ':raw';
+       print $cgi->header(-type => 'image/png', -expires => '+1d');
+       # cat git-logo.png | hexdump -e '16/1 " %02x"  "\n"' | sed 's/ /\\x/g'
+       print   "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a\x00\x00\x00\x0d\x49\x48\x44\x52" .
+               "\x00\x00\x00\x48\x00\x00\x00\x1b\x04\x03\x00\x00\x00\x2d\xd9\xd4" .
+               "\x2d\x00\x00\x00\x18\x50\x4c\x54\x45\xff\xff\xff\x60\x60\x5d\xb0" .
+               "\xaf\xaa\x00\x80\x00\xce\xcd\xc7\xc0\x00\x00\xe8\xe8\xe6\xf7\xf7" .
+               "\xf6\x95\x0c\xa7\x47\x00\x00\x00\x73\x49\x44\x41\x54\x28\xcf\x63" .
+               "\x48\x67\x20\x04\x4a\x5c\x18\x0a\x08\x2a\x62\x53\x61\x20\x02\x08" .
+               "\x0d\x69\x45\xac\xa1\xa1\x01\x30\x0c\x93\x60\x36\x26\x52\x91\xb1" .
+               "\x01\x11\xd6\xe1\x55\x64\x6c\x6c\xcc\x6c\x6c\x0c\xa2\x0c\x70\x2a" .
+               "\x62\x06\x2a\xc1\x62\x1d\xb3\x01\x02\x53\xa4\x08\xe8\x00\x03\x18" .
+               "\x26\x56\x11\xd4\xe1\x20\x97\x1b\xe0\xb4\x0e\x35\x24\x71\x29\x82" .
+               "\x99\x30\xb8\x93\x0a\x11\xb9\x45\x88\xc1\x8d\xa0\xa2\x44\x21\x06" .
+               "\x27\x41\x82\x40\x85\xc1\x45\x89\x20\x70\x01\x00\xa4\x3d\x21\xc5" .
+               "\x12\x1c\x9a\xfe\x00\x00\x00\x00\x49\x45\x4e\x44\xae\x42\x60\x82";
 }
 
 sub git_project_list {
@@ -1015,89 +1381,6 @@ 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);
@@ -1126,156 +1409,37 @@ sub git_summary {
        my $refs = read_info_ref();
        git_header_html();
        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 git-rev-list failed.");
        my @revlist = map { chomp; $_ } <$fd>;
        close $fd;
        git_header_div('shortlog');
-       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_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) {
                git_header_div('tags');
-               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=$project;a=tags")}, "...") . "</td>\n" .
-                               "</tr>";
-                               last;
-                       }
-               }
-               print "</table\n>";
+               git_tags_body($taglist, 0, 15,
+                             $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tags")}, "..."));
        }
 
        my $headlist = git_read_refs("refs/heads");
        if (defined @$headlist) {
                git_header_div('heads');
-               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=$project;a=heads")}, "...") . "</td>\n" .
-                               "</tr>";
-                               last;
-                       }
-               }
-               print "</table\n>";
+               git_heads_body($headlist, $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 {
@@ -1461,161 +1625,27 @@ sub git_tags {
        my $head = git_read_head($project);
        git_header_html();
        git_page_nav('','', $head,undef,$head);
-       git_header_div('summary', $project);
-       print "<table cellspacing=\"0\">\n";
-
-       my $taglist = git_read_refs("refs/tags");
-       my $alternate = 0;
-       if (defined @$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>";
-               }
-       }
-       print "</table\n>";
-       git_footer_html();
-}
-
-sub git_heads {
-       my $head = git_read_head($project);
-       git_header_html();
-       git_page_nav('','', $head,undef,$head);
-       hit_header_div('summary', $project);
-       print "<table cellspacing=\"0\">\n";
-
-       my $taglist = git_read_refs("refs/heads");
-       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>";
-               }
-       }
-       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;
+       git_header_div('summary', $project);
 
-       if ($filename) {
-               my $mime = mimetype_guess($filename);
-               $mime and return $mime;
+       my $taglist = git_read_refs("refs/tags");
+       if (defined @$taglist) {
+               git_tags_body($taglist);
        }
+       git_footer_html();
+}
 
-       # just in case
-       return $default_blob_plain_mimetype unless $fd;
+sub git_heads {
+       my $head = git_read_head($project);
+       git_header_html();
+       git_page_nav('','', $head,undef,$head);
+       git_header_div('summary', $project);
 
-       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';
+       my $taglist = git_read_refs("refs/heads");
+       my $alternate = 0;
+       if (defined @$taglist) {
+               git_heads_body($taglist, $head);
        }
+       git_footer_html();
 }
 
 sub git_blob_plain {
@@ -1727,10 +1757,7 @@ sub git_tree {
        $/ = "\n";
 
        my $refs = read_info_ref();
-       my $ref = "";
-       if (defined $refs->{$hash_base}) {
-               $ref = " <span class=\"tag\">" . esc_html($refs->{$hash_base}) . "</span>";
-       }
+       my $ref = git_get_referencing($refs, $hash_base);
        git_header_html();
        my $base_key = "";
        my $base = "";
@@ -1790,98 +1817,6 @@ sub git_tree {
        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 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 %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;
-               }
-               $ENV{'GIT_DIR'} = "$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 "</outline>\n".
-             "</body>\n".
-             "</opml>\n";
-}
-
 sub git_log {
        my $head = git_read_head($project);
        if (!defined $hash) {
@@ -1911,10 +1846,7 @@ sub git_log {
        }
        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'});
@@ -1978,16 +1910,13 @@ 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);
+       my $ref = git_get_referencing($refs, $co{'id'});
        my $formats_nav = '';
        if (defined $file_name && defined $co{'parent'}) {
                my $parent = $co{'parent'};
                $formats_nav .= $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blame;hb=$parent;f=$file_name")}, "blame");
        }
+       git_header_html(undef, $expires);
        git_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
                                                         $hash, $co{'tree'}, $hash,
                                                         $formats_nav);
@@ -1995,7 +1924,7 @@ sub git_commit {
        if (defined $co{'parent'}) {
                git_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
        } else {
-               git_header_div('tree', esc_html($co{'title'}), $co{'tree'}, $hash);
+               git_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
        }
        print "<div class=\"title_text\">\n" .
              "<table cellspacing=\"0\">\n";
@@ -2205,13 +2134,10 @@ 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>";
-       }
-       git_header_html(undef, $expires);
+       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);
        git_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
        git_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
        print "<div class=\"page_body\">\n";
@@ -2353,7 +2279,7 @@ sub git_history {
        git_print_page_path($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>) {
@@ -2363,10 +2289,7 @@ 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 {
@@ -2380,7 +2303,7 @@ sub git_history {
                              "<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") .
-                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=blob;hb=$commit;f=$file_name")}, "blob");
+                             " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=$ftype;hb=$commit;f=$file_name")}, $ftype);
                        my $blob = git_get_hash_by_path($hash_base, $file_name);
                        my $blob_parent = git_get_hash_by_path($commit, $file_name);
                        if (defined $blob && defined $blob_parent && $blob ne $blob_parent) {
@@ -2549,51 +2472,114 @@ sub git_shortlog {
        close $fd;
 
        my $paging_nav = git_get_paging_nav('shortlog', $hash, $head, $page, $#revlist);
+       my $next_link = '';
+       if ($#revlist >= (100 * ($page+1)-1)) {
+               $next_link =
+                       $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=shortlog;h=$hash;pg=" . ($page+1)),
+                                -title => "Alt-n"}, "next");
+       }
+
 
        git_header_html();
        git_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
        git_header_div('summary', $project);
 
-       print "<table cellspacing=\"0\">\n";
-       my $alternate = 0;
-       for (my $i = ($page * 100); $i <= $#revlist; $i++) {
+       git_shortlog_body(\@revlist, ($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";
 }