#!/usr/bin/perl
#
# Copyright (C) 2004 Jörg Tiedemann  <joerg@stp.ling.uu.se>
#
# $Id: swap-lang,v 1.1.1.1 2004/05/03 15:39:55 joerg72 Exp $

use strict;
use FindBin qw($Bin);
use lib "$Bin/..";
use Uplug::Data::Tree;
use Uplug::IO::Any;

my $prob=0;
my $delimiter="\t";


if ($#ARGV != 1){die "usage: swap-lang in-dbm out-dbm\n";}


my %in=('file' => $ARGV[0],
	'format' => 'dbm',
	'key' => ['source','target']);

my %out=('file' => $ARGV[1],
	'format' => 'dbm',
	'write_mode' => 'overwrite',
	'key' => ['target','source']);

my $data=Uplug::Data::Tree->new;

my $i=Uplug::IO::Any->new(\%in);
my $o=Uplug::IO::Any->new(\%out);

$i->open('read',\%in);
$o->open('write',\%out);
my $head=$i->header();
if (ref($head) eq 'HASH'){
    my %new=();
    foreach (keys %{$head}){
	my $old=$_;
	if (not s/source/target/g){s/target/source/g;}
	$new{$_}=$head->{$old};
    }
    %{$head}=%new;
}
$o->addheader($head);
$o->writeheader();

while ($i->read($data)){
    $o->write($data);
}

$i->close();
$o->close();