#!/usr/bin/perl
-die "usage: $0 [git-log-options] num" unless @ARGV;
+# given a perforce change number, output the equivalent git commit id
+# with -c, checks out the specified commit
+
+die "usage: $0 [-c|--checkout] [git-log-options] changenum" unless @ARGV;
my $num = 1;
+my $checkout = 0;
+
+my $before = '--before=2008-12-18'; # only changes made under perforce
for (@ARGV) {
m{^\d+$} && (($change,$_) = ($_,undef));
m{^-\d+$} && (($num,$_) = (-$_,undef));
+ $_ eq '-c' || $_ eq '--checkout'
+ and $checkout = 1;
}
my $grep = "--grep=^p4raw-id:.*\@$change\$";
@ARGV = grep { defined } @ARGV;
-if ( -t STDOUT or @ARGV ) {
- system(qw(git log), $grep, "-$num", "--all", @ARGV);
+if ($checkout) {
+ my $commit = qx(git rev-list -1 --all $before '$grep');
+ chomp $commit;
+ die "no commit found" unless $commit;
+ system(git => checkout => $commit);
}
else {
- system(qw(git rev-list -1 --all), $grep);
+ if ( -t STDOUT or @ARGV ) {
+ system(qw(git log), $grep, "-$num", "--all", $before, @ARGV);
+ }
+ else {
+ system(qw(git rev-list -1 --all), $before, $grep);
+ }
}