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#!/usr/bin/perl
#
# git-revert statistics
# written by Jan Engelhardt, 2008
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the WTF Public License version 2 or
# (at your option) any later version.
#
# git log --pretty="format:<%an>%s" v2.6.25..HEAD | ./git-revert-stats
#
# -n NUM limit output to NUM developers
# -o omit developers with only one revert/commit
# -v debug debug debug output
#
use Getopt::Long;
use Git;
use strict;
no strict "subs";
use warnings;
my $stats_limit = 100;
my $verbose = 0;
my $omit_one = 0;
&Getopt::Long::Configure(qw(bundling));
&GetOptions(
"n=i" => \$stats_limit,
"v+" => \$verbose,
"o" => \$omit_one,
);
&main();
sub main ()
{
my $repo = Git->repository();
my @note;
my(%praise, %blame);
foreach (<>) {
my($name, $message) = ($_ =~ /^<(.*?)>(.*)/);
if ($message =~ /^\s*revert\s*:?\s*(\"?)(.*)\1/i) {
push(@note, [$name, $2]);
++$praise{$name};
if ($verbose >= 1) {
print "\e[31m", "$name: $message", "\e[0m\n";
}
next;
}
my $idx;
if ($idx = &array_substr_ifind(\@note, $message)) {
++$blame{$name};
if ($verbose >= 1) {
print "\e[32m", "$name: $message", "\e[0m\n";
}
next;
}
if ($verbose >= 2) {
print "\e[34m", "$name: $message", "\e[0m\n";
}
}
&stats(\%praise, \%blame);
}
sub stats ()
{
my($reverands, $developers) = @_; # pun
my $omits;
my $i;
print " P# COMM# NAME --- Top people doing the revert:\n";
$omits = 0;
$i = 0;
foreach my $name (sort { $reverands->{$b} <=> $reverands->{$a} } keys %$reverands) {
if ($omit_one && $reverands->{$name} == 1) {
++$omits;
next;
}
if ($i > $stats_limit) {
last;
}
printf "%3u %5u %s\n", ++$i, $reverands->{$name}, $name;
}
if ($omit_one && $omits > 0) {
printf " * %5u developers with only one revert are omitted\n", $omits;
}
print "\n";
print " P# COMM# NAME --- Top developers with reverted commits:\n";
$omits = 0;
$i = 0;
foreach my $name (sort { $developers->{$b} <=> $developers->{$a} } keys %$developers) {
if ($omit_one && $developers->{$name} == 1) {
++$omits;
next;
}
if ($i > $stats_limit) {
last;
}
printf "%3u %5u %s\n", ++$i, $developers->{$name}, $name;
}
if ($omit_one && $omits > 0) {
printf " * %5u developers with only one revert are omitted\n", $omits;
}
}
sub array_substr_ifind ()
{
my($note, $msg) = @_;
foreach my $note_entry (@$note) {
if ($msg =~ /\Q$note_entry->[1]\E/i) {
return 1;
}
}
return 0;
}
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