3 # given a perforce change number, output the equivalent git commit id
4 # with -c, checks out the specified commit
6 die "usage: $0 [-c|--checkout] [git-log-options] changenum" unless @ARGV;
11 my $before = '--before=2008-12-18'; # only changes made under perforce
14 m{^\d+$} && (($change,$_) = ($_,undef));
15 m{^-\d+$} && (($num,$_) = (-$_,undef));
16 $_ eq '-c' || $_ eq '--checkout'
20 my $grep = "--grep=^p4raw-id:.*\@$change\$";
21 @ARGV = grep { defined } @ARGV;
24 my $commit = qx(git rev-list -1 --all $before '$grep');
26 die "no commit found" unless $commit;
27 system(git => checkout => $commit);
30 if ( -t STDOUT or @ARGV ) {
31 system(qw(git log), $grep, "-$num", "--all", $before, @ARGV);
34 system(qw(git rev-list -1 --all), $before, $grep);