git-shortlog

   1 #!/usr/bin/perl -w
   2
   3 use strict;
   4
   5 #
   6 # Even with git, we don't always have name translations.
   7 # So have an email->real name table to translate the
   8 # (hopefully few) missing names
   9 #
  10 my %mailmap = (
  11         'R.Marek@sh.cvut.cz' => 'Rudolf Marek',
  12         'Ralf.Wildenhues@gmx.de' => 'Ralf Wildenhues',
  13         'aherrman@de.ibm.com' => 'Andreas Herrmann',
  14         'akpm@osdl.org' => 'Andrew Morton',
  15         'andrew.vasquez@qlogic.com' => 'Andrew Vasquez',
  16         'aquynh@gmail.com' => 'Nguyen Anh Quynh',
  17         'axboe@suse.de' => 'Jens Axboe',
  18         'blaisorblade@yahoo.it' => 'Paolo \'Blaisorblade\' Giarrusso',
  19         'bunk@stusta.de' => 'Adrian Bunk',
  20         'domen@coderock.org' => 'Domen Puncer',
  21         'dougg@torque.net' => 'Douglas Gilbert',
  22         'dwmw2@shinybook.infradead.org' => 'David Woodhouse',
  23         'ecashin@coraid.com' => 'Ed L Cashin',
  24         'felix@derklecks.de' => 'Felix Moeller',
  25         'fzago@systemfabricworks.com' => 'Frank Zago',
  26         'gregkh@suse.de' => 'Greg Kroah-Hartman',
  27         'hch@lst.de' => 'Christoph Hellwig',
  28         'htejun@gmail.com' => 'Tejun Heo',
  29         'jejb@mulgrave.(none)' => 'James Bottomley',
  30         'jejb@titanic.il.steeleye.com' => 'James Bottomley',
  31         'jgarzik@pretzel.yyz.us' => 'Jeff Garzik',
  32         'johnpol@2ka.mipt.ru' => 'Evgeniy Polyakov',
  33         'kay.sievers@vrfy.org' => 'Kay Sievers',
  34         'minyard@acm.org' => 'Corey Minyard',
  35         'mshah@teja.com' => 'Mitesh shah',
  36         'pj@ludd.ltu.se' => 'Peter A Jonsson',
  37         'rmps@joel.ist.utl.pt' => 'Rui Saraiva',
  38         'santtu.hyrkko@gmail.com' => 'Santtu Hyrkkö',
  39         'simon@thekelleys.org.uk' => 'Simon Kelley',
  40         'ssant@in.ibm.com' => 'Sachin P Sant',
  41         'terra@gnome.org' => 'Morten Welinder',
  42         'tony.luck@intel.com' => 'Tony Luck',
  43         'welinder@anemone.rentec.com' => 'Morten Welinder',
  44         'welinder@darter.rentec.com' => 'Morten Welinder',
  45         'welinder@troll.com' => 'Morten Welinder',
  46 );
  47
  48 my (%map);
  49 my $pstate = 1;
  50 my $n_records = 0;
  51 my $n_output = 0;
  52
  53
  54 sub shortlog_entry($$) {
  55         my ($name, $desc) = @_;
  56         my $key = $name;
  57
  58         $desc =~ s#/pub/scm/linux/kernel/git/#/.../#g;
  59         $desc =~ s#\[PATCH\] ##g;
  60
  61         # store description in array, in email->{desc list} map
  62         if (exists $map{$key}) {
  63                 # grab ref
  64                 my $obj = $map{$key};
  65
  66                 # add desc to array
  67                 push(@$obj, $desc);
  68         } else {
  69                 # create new array, containing 1 item
  70                 my @arr = ($desc);
  71
  72                 # store ref to array
  73                 $map{$key} = \@arr;
  74         }
  75 }
  76
  77 # sort comparison function
  78 sub by_name($$) {
  79         my ($a, $b) = @_;
  80
  81         uc($a) cmp uc($b);
  82 }
  83
  84 sub shortlog_output {
  85         my ($obj, $key, $desc);
  86
  87         foreach $key (sort by_name keys %map) {
  88                 # output author
  89                 printf "%s:\n", $key;
  90
  91                 # output author's 1-line summaries
  92                 $obj = $map{$key};
  93                 foreach $desc (reverse @$obj) {
  94                         print "  $desc\n";
  95                         $n_output++;
  96                 }
  97
  98                 # blank line separating author from next author
  99                 print "\n";
 100         }
 101 }
 102
 103 sub changelog_input {
 104         my ($author, $desc);
 105
 106         while (<>) {
 107                 # get author and email
 108                 if ($pstate == 1) {
 109                         my ($email);
 110
 111                         next unless /^Author: (.*)<(.*)>.*$/;
 112
 113                         $n_records++;
 114
 115                         $author = $1;
 116                         $email = $2;
 117                         $desc = undef;
 118
 119                         # trim trailing whitespace.
 120                         # why doesn't chomp work?
 121                         while ($author && ($author =~ /\s$/)) {
 122                                 chop $author;
 123                         }
 124
 125                         # cset author fixups
 126                         if (exists $mailmap{$email}) {
 127                                 $author = $mailmap{$email};
 128                         } elsif (exists $mailmap{$author}) {
 129                                 $author = $mailmap{$author};
 130                         } elsif ((!$author) || ($author eq "")) {
 131                                 $author = $email;
 132                         }
 133
 134                         $pstate++;
 135                 }
 136
 137                 # skip to blank line
 138                 elsif ($pstate == 2) {
 139                         next unless /^\s*$/;
 140                         $pstate++;
 141                 }
 142
 143                 # skip to non-blank line
 144                 elsif ($pstate == 3) {
 145                         next unless /^\s*(\S.*)$/;
 146
 147                         # skip lines that are obviously not
 148                         # a 1-line cset description
 149                         next if /^\s*From: /;
 150
 151                         chomp;
 152                         $desc = $1;
 153
 154                         &shortlog_entry($author, $desc);
 155
 156                         $pstate = 1;
 157                 }
 158
 159                 else {
 160                         die "invalid parse state $pstate";
 161                 }
 162         }
 163 }
 164
 165 sub finalize {
 166         #print "\n$n_records records parsed.\n";
 167
 168         if ($n_records != $n_output) {
 169                 die "parse error: input records != output records\n";
 170         }
 171 }
 172
 173 &changelog_input;
 174 &shortlog_output;
 175 &finalize;
 176 exit(0);
 177