contrib/blameview/blameview.perl

   1 #!/usr/bin/perl
   2
   3 use Gtk2 -init;
   4 use Gtk2::SimpleList;
   5
   6 my $hash;
   7 my $fn;
   8 if ( @ARGV == 1 ) {
   9         $hash = "HEAD";
  10         $fn = shift;
  11 } elsif ( @ARGV == 2 ) {
  12         $hash = shift;
  13         $fn = shift;
  14 } else {
  15         die "Usage blameview [<rev>] <filename>";
  16 }
  17
  18 Gtk2::Rc->parse_string(<<'EOS');
  19 style "treeview_style"
  20 {
  21   GtkTreeView::vertical-separator = 0
  22 }
  23 class "GtkTreeView" style "treeview_style"
  24 EOS
  25
  26 my $window = Gtk2::Window->new('toplevel');
  27 $window->signal_connect(destroy => sub { Gtk2->main_quit });
  28 my $vpan = Gtk2::VPaned->new();
  29 $window->add($vpan);
  30 my $scrolled_window = Gtk2::ScrolledWindow->new;
  31 $vpan->pack1($scrolled_window, 1, 1);
  32 my $fileview = Gtk2::SimpleList->new(
  33     'Commit' => 'text',
  34     'FileLine' => 'text',
  35     'Data' => 'text'
  36 );
  37 $scrolled_window->add($fileview);
  38 $fileview->get_column(0)->set_spacing(0);
  39 $fileview->set_size_request(1024, 768);
  40 $fileview->set_rules_hint(1);
  41 $fileview->signal_connect (row_activated => sub {
  42                 my ($sl, $path, $column) = @_;
  43                 my $row_ref = $sl->get_row_data_from_path ($path);
  44                 system("blameview @$row_ref[0]~1 $fn &");
  45                 });
  46
  47 my $commitwindow = Gtk2::ScrolledWindow->new();
  48 $commitwindow->set_policy ('GTK_POLICY_AUTOMATIC','GTK_POLICY_AUTOMATIC');
  49 $vpan->pack2($commitwindow, 1, 1);
  50 my $commit_text = Gtk2::TextView->new();
  51 my $commit_buffer = Gtk2::TextBuffer->new();
  52 $commit_text->set_buffer($commit_buffer);
  53 $commitwindow->add($commit_text);
  54
  55 $fileview->signal_connect (cursor_changed => sub {
  56                 my ($sl) = @_;
  57                 my ($path, $focus_column) = $sl->get_cursor();
  58                 my $row_ref = $sl->get_row_data_from_path ($path);
  59                 my $c_fh;
  60                 open($c_fh,  '-|', "git cat-file commit @$row_ref[0]")
  61                                         or die "unable to find commit @$row_ref[0]";
  62                 my @buffer = <$c_fh>;
  63                 $commit_buffer->set_text("@buffer");
  64                 close($c_fh);
  65                 });
  66
  67 my $fh;
  68 open($fh, '-|', "git cat-file blob $hash:$fn")
  69   or die "unable to open $fn: $!";
  70
  71 while(<$fh>) {
  72   chomp;
  73   $fileview->{data}->[$.] = ['HEAD', "$fn:$.", $_];
  74 }
  75
  76 my $blame;
  77 open($blame, '-|', qw(git blame --incremental --), $fn, $hash)
  78     or die "cannot start git-blame $fn";
  79
  80 Glib::IO->add_watch(fileno($blame), 'in', \&read_blame_line);
  81
  82 $window->show_all;
  83 Gtk2->main;
  84 exit 0;
  85
  86 my %commitinfo = ();
  87
  88 sub flush_blame_line {
  89         my ($attr) = @_;
  90
  91         return unless defined $attr;
  92
  93         my ($commit, $s_lno, $lno, $cnt) =
  94             @{$attr}{qw(COMMIT S_LNO LNO CNT)};
  95
  96         my ($filename, $author, $author_time, $author_tz) =
  97             @{$commitinfo{$commit}}{qw(FILENAME AUTHOR AUTHOR-TIME AUTHOR-TZ)};
  98         my $info = $author . ' ' . format_time($author_time, $author_tz);
  99
 100         for(my $i = 0; $i < $cnt; $i++) {
 101                 @{$fileview->{data}->[$lno+$i-1]}[0,1,2] =
 102                 (substr($commit, 0, 8), $filename . ':' . ($s_lno+$i));
 103         }
 104 }
 105
 106 my $buf;
 107 my $current;
 108 sub read_blame_line {
 109
 110         my $r = sysread($blame, $buf, 1024, length($buf));
 111         die "I/O error" unless defined $r;
 112
 113         if ($r == 0) {
 114                 flush_blame_line($current);
 115                 $current = undef;
 116                 return 0;
 117         }
 118
 119         while ($buf =~ s/([^\n]*)\n//) {
 120                 my $line = $1;
 121
 122                 if (($commit, $s_lno, $lno, $cnt) =
 123                     ($line =~ /^([0-9a-f]{40}) (\d+) (\d+) (\d+)$/)) {
 124                         flush_blame_line($current);
 125                         $current = +{
 126                                 COMMIT => $1,
 127                                 S_LNO => $2,
 128                                 LNO => $3,
 129                                 CNT => $4,
 130                         };
 131                         next;
 132                 }
 133
 134                 # extended attribute values
 135                 if ($line =~ /^(author|author-mail|author-time|author-tz|committer|committer-mail|committer-time|committer-tz|summary|filename) (.*)$/) {
 136                         my $commit = $current->{COMMIT};
 137                         $commitinfo{$commit}{uc($1)} = $2;
 138                         next;
 139                 }
 140         }
 141         return 1;
 142 }
 143
 144 sub format_time {
 145   my $time = shift;
 146   my $tz = shift;
 147
 148   my $minutes = $tz < 0 ? 0-$tz : $tz;
 149   $minutes = ($minutes / 100)*60 + ($minutes % 100);
 150   $minutes = $tz < 0 ? 0-$minutes : $minutes;
 151   $time += $minutes * 60;
 152   my @t = gmtime($time);
 153   return sprintf('%04d-%02d-%02d %02d:%02d:%02d %s',
 154                  $t[5] + 1900, @t[4,3,2,1,0], $tz);
 155 }