Andrew's git - gitweb.git/blob - contrib/blameview/blameview.perl

   1#!/usr/bin/perl
   2
   3use Gtk2 -init;
   4use Gtk2::SimpleList;
   5
   6my $fn = shift or die "require filename to blame";
   7
   8Gtk2::Rc->parse_string(<<'EOS');
   9style "treeview_style"
  10{
  11  GtkTreeView::vertical-separator = 0
  12}
  13class "GtkTreeView" style "treeview_style"
  14EOS
  15
  16my $window = Gtk2::Window->new('toplevel');
  17$window->signal_connect(destroy => sub { Gtk2->main_quit });
  18my $scrolled_window = Gtk2::ScrolledWindow->new;
  19$window->add($scrolled_window);
  20my $fileview = Gtk2::SimpleList->new(
  21    'Commit' => 'text',
  22    'CommitInfo' => 'text',
  23    'FileLine' => 'text',
  24    'Data' => 'text'
  25);
  26$scrolled_window->add($fileview);
  27$fileview->get_column(0)->set_spacing(0);
  28$fileview->set_size_request(1024, 768);
  29$fileview->set_rules_hint(1);
  30
  31my $fh;
  32open($fh, '-|', "git cat-file blob HEAD:$fn")
  33  or die "unable to open $fn: $!";
  34while(<$fh>) {
  35  chomp;
  36  $fileview->{data}->[$.] = ['HEAD', '?', "$fn:$.", $_];
  37}
  38
  39my $blame;
  40open($blame, '-|', qw(git blame --incremental --), $fn)
  41    or die "cannot start git-blame $fn";
  42
  43Glib::IO->add_watch(fileno($blame), 'in', \&read_blame_line);
  44
  45$window->show_all;
  46Gtk2->main;
  47exit 0;
  48
  49my %commitinfo = ();
  50
  51sub flush_blame_line {
  52        my ($attr) = @_;
  53
  54        return unless defined $attr;
  55
  56        my ($commit, $s_lno, $lno, $cnt) =
  57            @{$attr}{qw(COMMIT S_LNO LNO CNT)};
  58
  59        my ($filename, $author, $author_time, $author_tz) =
  60            @{$commitinfo{$commit}}{qw(FILENAME AUTHOR AUTHOR-TIME AUTHOR-TZ)};
  61        my $info = $author . ' ' . format_time($author_time, $author_tz);
  62
  63        for(my $i = 0; $i < $cnt; $i++) {
  64                @{$fileview->{data}->[$lno+$i-1]}[0,1,2] =
  65                    (substr($commit, 0, 8), $info,
  66                     $filename . ':' . ($s_lno+$i));
  67        }
  68}
  69
  70my $buf;
  71my $current;
  72sub read_blame_line {
  73
  74        my $r = sysread($blame, $buf, 1024, length($buf));
  75        die "I/O error" unless defined $r;
  76
  77        if ($r == 0) {
  78                flush_blame_line($current);
  79                $current = undef;
  80                return 0;
  81        }
  82
  83        while ($buf =~ s/([^\n]*)\n//) {
  84                my $line = $1;
  85
  86                if (($commit, $s_lno, $lno, $cnt) =
  87                    ($line =~ /^([0-9a-f]{40}) (\d+) (\d+) (\d+)$/)) {
  88                        flush_blame_line($current);
  89                        $current = +{
  90                                COMMIT => $1,
  91                                S_LNO => $2,
  92                                LNO => $3,
  93                                CNT => $4,
  94                        };
  95                        next;
  96                }
  97
  98                # extended attribute values
  99                if ($line =~ /^(author|author-mail|author-time|author-tz|committer|committer-mail|committer-time|committer-tz|summary|filename) (.*)$/) {
 100                        my $commit = $current->{COMMIT};
 101                        $commitinfo{$commit}{uc($1)} = $2;
 102                        next;
 103                }
 104        }
 105        return 1;
 106}
 107
 108sub format_time {
 109  my $time = shift;
 110  my $tz = shift;
 111
 112  my $minutes = $tz < 0 ? 0-$tz : $tz;
 113  $minutes = ($minutes / 100)*60 + ($minutes % 100);
 114  $minutes = $tz < 0 ? 0-$minutes : $minutes;
 115  $time += $minutes * 60;
 116  my @t = gmtime($time);
 117  return sprintf('%04d-%02d-%02d %02d:%02d:%02d %s',
 118                 $t[5] + 1900, @t[4,3,2,1,0], $tz);
 119}