#! /usr/local/bin/perl -w

# vim: tabstop=4
# vim: syntax=perl

use strict;

use Test;

BEGIN {
	plan tests => 7;
}

use Locale::Recode;

sub int2utf8;

my $local2ucs = {};
my $ucs2local = {};

while (<DATA>) {
	my ($code, $ucs, undef) = map { oct $_ } split /\s+/, $_;
	$local2ucs->{$code} = $ucs;
	$ucs2local->{$ucs} = $code unless $ucs == 0xfffd;
}

my $cd_int = Locale::Recode->new (from => 'GREEK-CCITT',
				  to => 'INTERNAL');
ok !$cd_int->getError;

my $cd_utf8 = Locale::Recode->new (from => 'GREEK-CCITT',
				   to => 'UTF-8');
ok !$cd_utf8->getError;

my $cd_rev = Locale::Recode->new (from => 'INTERNAL',
				  to => 'GREEK-CCITT');
ok !$cd_rev->getError;

# Convert into internal representation.
my $result_int = 1;
while (my ($code, $ucs) = each %$local2ucs) {
    my $outbuf = chr $code;
    my $result = $cd_int->recode ($outbuf);
    unless ($result && $outbuf->[0] == $ucs) {
	$result_int = 0;
	last;
    }
}
ok $result_int;

# Convert to UTF-8.
my $result_utf8 = 1;
while (my ($code, $ucs) = each %$local2ucs) {
    my $outbuf = chr $code;
    my $result = $cd_utf8->recode ($outbuf);
    unless ($result && $outbuf eq int2utf8 $ucs) {
        $result_utf8 = 0;
        last;
    }
}
ok $result_utf8;

# Convert from internal representation.
my $result_rev = 1;
while (my ($ucs, $code) = each %$ucs2local) {
    my $outbuf = [ $ucs ];
    my $result = $cd_rev->recode ($outbuf);
    unless ($result && $code == ord $outbuf) {
        $result_int = 0;
        last;
    }
}
ok $result_int;

# Check handling of unknown characters.
my $test_string1 = [ unpack 'c*', ' Supergirl ' ];
$test_string1->[0] = 0xad0be;
$test_string1->[-1] = 0xbeefbabe;
my $test_string2 = [ unpack 'c*', 'Supergirl' ];

my $unknown = "\x3f"; # Unknown character!

$cd_rev = Locale::Recode->new (from => 'INTERNAL',
		               to => 'GREEK-CCITT',
				)
&& $cd_rev->recode ($test_string1)
&& $cd_rev->recode ($test_string2)
&& ($test_string2 = $unknown . $test_string2 . $unknown);

ok $test_string1 eq $test_string2;

sub int2utf8
{
    my $ucs4 = shift;
    
    if ($ucs4 <= 0x7f) {
	return chr $ucs4;
    } elsif ($ucs4 <= 0x7ff) {
	return pack ("C2", 
		     (0xc0 | (($ucs4 >> 6) & 0x1f)),
		     (0x80 | ($ucs4 & 0x3f)));
    } elsif ($ucs4 <= 0xffff) {
	return pack ("C3", 
		     (0xe0 | (($ucs4 >> 12) & 0xf)),
		     (0x80 | (($ucs4 >> 6) & 0x3f)),
		     (0x80 | ($ucs4 & 0x3f)));
    } elsif ($ucs4 <= 0x1fffff) {
	return pack ("C4", 
		     (0xf0 | (($ucs4 >> 18) & 0x7)),
		     (0x80 | (($ucs4 >> 12) & 0x3f)),
		     (0x80 | (($ucs4 >> 6) & 0x3f)),
		     (0x80 | ($ucs4 & 0x3f)));
    } elsif ($ucs4 <= 0x3ffffff) {
	return pack ("C5", 
		     (0xf0 | (($ucs4 >> 24) & 0x3)),
		     (0x80 | (($ucs4 >> 18) & 0x3f)),
		     (0x80 | (($ucs4 >> 12) & 0x3f)),
		     (0x80 | (($ucs4 >> 6) & 0x3f)),
		     (0x80 | ($ucs4 & 0x3f)));
    } else {
	return pack ("C6", 
		     (0xf0 | (($ucs4 >> 30) & 0x3)),
		     (0x80 | (($ucs4 >> 24) & 0x1)),
		     (0x80 | (($ucs4 >> 18) & 0x3f)),
		     (0x80 | (($ucs4 >> 12) & 0x3f)),
		     (0x80 | (($ucs4 >> 6) & 0x3f)),
		     (0x80 | ($ucs4 & 0x3f)));
    }
}

#Local Variables:
#mode: perl
#perl-indent-level: 4
#perl-continued-statement-offset: 4
#perl-continued-brace-offset: 0
#perl-brace-offset: -4
#perl-brace-imaginary-offset: 0
#perl-label-offset: -4
#tab-width: 4
#End:


__DATA__
0x00	0x0000
0x01	0x0001
0x02	0x0002
0x03	0x0003
0x04	0x0004
0x05	0x0005
0x06	0x0006
0x07	0x0007
0x08	0x0008
0x09	0x0009
0x0a	0x000a
0x0b	0x000b
0x0c	0x000c
0x0d	0x000d
0x0e	0x000e
0x0f	0x000f
0x10	0x0010
0x11	0x0011
0x12	0x0012
0x13	0x0013
0x14	0x0014
0x15	0x0015
0x16	0x0016
0x17	0x0017
0x18	0x0018
0x19	0x0019
0x1a	0x001a
0x1b	0x001b
0x1c	0x001c
0x1d	0x001d
0x1e	0x001e
0x1f	0x001f
0x20	0x0020
0x21	0x0021
0x22	0x0022
0x23	0x0023
0x24	0x00a4
0x25	0x0025
0x26	0x0026
0x27	0x0027
0x28	0x0028
0x29	0x0029
0x2a	0x002a
0x2b	0x002b
0x2c	0x002c
0x2d	0x002d
0x2e	0x002e
0x2f	0x002f
0x30	0x0030
0x31	0x0031
0x32	0x0032
0x33	0x0033
0x34	0x0034
0x35	0x0035
0x36	0x0036
0x37	0x0037
0x38	0x0038
0x39	0x0039
0x3a	0x003a
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0x3d	0x003d
0x3e	0x003e
0x3f	0x003f
0x40	0x0040
0x41	0x0391
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0xf8	0xfffd
0xf9	0xfffd
0xfa	0xfffd
0xfb	0xfffd
0xfc	0xfffd
0xfd	0xfffd
0xfe	0xfffd
0xff	0xfffd
