#!/usr/bin/perl -w
#
# VSS to Perforce converter, phase II: improve metadata
#
# This script sorts the metadata output (first step in phase II).

require 5.0;
use strict;
use integer;
use lib '.';
use convert;
use Change;

open(CHANGES, "<$convert::metadata_dir/changes.ns") or die "can't open for read: $!";
open(NEWCHANGES, ">$convert::metadata_dir/changes") or die "can't open for write: $!";

my ($index,$c,@timestamp_and_index);

# read 'em in

for($index=0;$c=get Change(\*CHANGES);$index++) {
  push(@timestamp_and_index, [ $c->timestamp, $index, $c ]);
}


# sort them by timestamp, then file location

@timestamp_and_index =
	sort { ($$a[0] <=> $$b[0]) || ($$b[1] <=> $$a[1]) } @timestamp_and_index;


# write 'em out

my $ti;
foreach $ti (@timestamp_and_index) {
	$$ti[2]->put(\*NEWCHANGES);
}

close(CHANGES); close(NEWCHANGES);

unlink("$convert::metadata_dir/changes.ns"); # delete the "not sorted" version