#!/usr/bin/perl
#
# Options:  KEEP=1      do not dlete temporary files
#           MODE=plain  the input is of the form "foo" = "bar"; only

$td="/tmp/nib-$$";
system "rm -rf '$td'";
mkdir "/tmp/nib-$$" || die "cannot create temporary directory for processing";

$en=shift;
$str=shift;
$tl=shift;

if ( $en eq '' || $tl eq '' || $str eq '') {
    print "\n Usage: $ARGV[0] <english.nib> <strings> <lang.nib>\n\n";
    exit 1;
}

open IN, "$str" || die "cannot open strings file";

system "ibtool --generate-strings-file '$td/en.uni' '$en'" || die "converting en file to strings failed";
system "iconv -f utf-16 -t utf-8 '$td/en.uni' > '$td/en.txt'" || die "converting en strings to unicode failed";

$mode=0;
$mode=1 if ($ENV{MODE} eq 'plain');

open OUT, ">$td/strings";
while (<IN>) {
    chomp;
    if ($mode == 1) {
	if ($e =~ /^\"(.*)\" = \"(.*)\";$/) {
	    $v_en = $1;
	    $v_tl = $2;
	    if ($map{$v_en} ne '' && $map{$v_en} ne $v_tl) {
		print STDERR "WARNING: different translation for the same key \"$v_en\": \"$map{$v_en}\" and \"$v_tl\"\n";
	    } else {
		$map{$v_en} = $v_tl;
	    }
	} elsif ($_ ne '') {
	    print STDERR "WARNING: unknown line: $_\n";
	}
    } else {
	if (/\/\* Entry = \"(\d+)\.([a-zA-Z0-9.]+)\"; Class = \"(.*)\"/) {
	    $id=$1; $item=$2; $cls=$3;
	    $e = <IN>;
	    chomp;
	    if ($e =~ /^\"(.*)\" = \"(.*)\";$/) {
		$v_en = $1;
		$v_tl = $2;
		if ($map{$v_en} ne '' && $map{$v_en} ne $v_tl) {
		    print STDERR "WARNING: different translation for the same key \"$v_en\": \"$map{$v_en}\" and \"$v_tl\"\n";
		} else {
		    $map{$v_en} = $v_tl;
		}
#	    print OUT "/* Class = \"$cls\"; $item = \"$2\"; ObjectID = \"$id\"; */\n\"$id.$item\" = \"$2\";\n\n";
	    } else {
		print STDERR "WARNING: invalid entry for $id.$item: $e\n";
	    }
	} elsif ($_ ne '') {
	    print STDERR "WARNING: unknown line: $_\n";
	}
    }
}
close IN;

open IN, "$td/en.txt";
while (<IN>) {
    chomp;
    if (/^\"([a-zA-Z0-9.]+)\" = \"(.*)\";$/) {
	if ($map{$2}) {
	    print OUT "\"$1\" = \"$map{$2}\";\n";
	    $used{$2} = 1;
	} else {
	    print STDERR "WARNING: translation for \"$2\" not found.\n";
	    print OUT "$_\n";
	}
	if (defined $cls) { $hc{$1} = $cls; undef $cls; }
    } elsif (/^\/\* Class = \"(.*?)\"; /) {
	print OUT "$_\n";
	$cls = $1;
    } elsif ($_ eq '') {
	print OUT "\n";
	undef $cls;
    } else {
	print STDERR "WARNING: unknown line: $_\n";
	print OUT "$_\n";
	undef $cls;
    }
}
close IN;

system "iconv -f utf-8 -t utf-16 '$td/strings' > '$td/strings.uni'" || die "converting strings to unicode failed";

if ($ENV{STOP} ne '') {
    print "STOP requested, output is in $td\n";
    exit 0;
}

# system "ibtool --previous-file '$en' --incremental-file '$lo' --strings-file '$td/strings.uni' --localize-incremental --write '$tl' '$en'" || die "converting lang file to strings failed";

if ( -e "$td/strings.uni" ) {
    system "ibtool --strings-file '$td/strings.uni' --write '$tl' '$en'" || die "generating lang nib failed";
}

if ($ENV{KEEP} ne '') {
    print STDERR "KEEP set, leaving all files in $td\n";
    exit 0;
}

system "rm -rf '$td'";