contrib/stats/mailmap.pl

   1 #!/usr/bin/perl -w
   2 my %mailmap = ();
   3 open I, "<", ".mailmap";
   4 while (<I>) {
   5         chomp;
   6         next if /^#/;
   7         if (my ($author, $mail) = /^(.*?)\s+<(.+)>$/) {
   8                 $mailmap{$mail} = $author;
   9         }
  10 }
  11 close I;
  12
  13 my %mail2author = ();
  14 open I, "git log --pretty='format:%ae   %an' |";
  15 while (<I>) {
  16         chomp;
  17         my ($mail, $author) = split(/\t/, $_);
  18         next if exists $mailmap{$mail};
  19         $mail2author{$mail} ||= {};
  20         $mail2author{$mail}{$author} ||= 0;
  21         $mail2author{$mail}{$author}++;
  22 }
  23 close I;
  24
  25 while (my ($mail, $authorcount) = each %mail2author) {
  26         # %$authorcount is ($author => $count);
  27         # sort and show the names from the most frequent ones.
  28         my @names = (map { $_->[0] }
  29                 sort { $b->[1] <=> $a->[1] }
  30                 map { [$_, $authorcount->{$_}] }
  31                 keys %$authorcount);
  32         if (1 < @names) {
  33                 for (@names) {
  34                         print "$_ <$mail>\n";
  35                 }
  36         }
  37 }
  38