#!/usr/bin/perl
use strict;
use warnings;

use lib $ENV{GL_LIBDIR};
use Gitolite::Common;

# gitolite VREF to lock and unlock (binary) files.  Requires companion command
# 'lock' to be enabled; see doc/locking.mkd for details.

# ----------------------------------------------------------------------

# see gitolite docs for what the first 7 arguments mean

die "not meant to be run manually" unless $ARGV[6];

my $ff = "$ENV{GL_REPO_BASE}/$ENV{GL_REPO}.git/gl-locks";
exit 0 unless -f $ff;

our %locks;
my $t = slurp($ff);
eval $t;
_die "do '$ff' failed with '$@', contact your administrator" if $@;

my ( $oldtree, $newtree, $refex ) = @ARGV[ 3, 4, 6 ];

for my $file (`git diff --name-only $oldtree $newtree`) {
    chomp($file);

    if ( $locks{$file} and $locks{$file}{USER} ne $ENV{GL_USER} ) {
        print "$refex '$file' locked by '$locks{$file}{USER}'";
        last;
    }
}

exit 0