1BEGIN {
2    if ($ENV{'PERL_CORE'}){
3        chdir 't';
4        unshift @INC, '../lib';
5    }
6    require Config; import Config;
7    if ($Config{'extensions'} !~ /\bEncode\b/) {
8      print "1..0 # Skip: Encode was not built\n";
9      exit 0;
10    }
11    $| = 1;
12}
13
14use strict;
15use utf8;
16use Test::More tests => 777;
17use Encode;
18use Encode::GSM0338;
19
20my $chk = Encode::LEAVE_SRC();
21
22# escapes
23# see https://www.3gpp.org/dynareport/23038.htm
24# see https://www.etsi.org/deliver/etsi_ts/123000_123099/123038/15.00.00_60/ts_123038v150000p.pdf (page 22)
25my %esc_seq = (
26	       "\x{20ac}" => "\x1b\x65",
27	       "\x0c"     => "\x1b\x0A",
28	       "["        => "\x1b\x3C",
29	       "\\"       => "\x1b\x2F",
30	       "]"        => "\x1b\x3E",
31	       "^"        => "\x1b\x14",
32	       "{"        => "\x1b\x28",
33	       "|"        => "\x1b\x40",
34	       "}"        => "\x1b\x29",
35	       "~"        => "\x1b\x3D",
36);
37
38my %unesc_seq = reverse %esc_seq;
39
40
41sub eu{
42    $_[0] =~ /[\x00-\x1f]/ ? 
43	sprintf("\\x{%04X}", ord($_[0])) : encode_utf8($_[0]);
44 
45}
46
47for my $c ( map { chr } 0 .. 127 ) {
48    next if $c eq "\x1B"; # escape character, start of multibyte sequence
49    my $u = $Encode::GSM0338::GSM2UNI{$c};
50
51    # default character set
52    is decode( "gsm0338", $c, $chk ), $u,
53      sprintf( "decode \\x%02X", ord($c) );
54    eval { decode( "gsm0338", $c . "\xff", $chk | Encode::FB_CROAK ) };
55    ok( $@, $@ );
56    is encode( "gsm0338", $u, $chk ), $c, sprintf( "encode %s", eu($u) );
57    eval { encode( "gsm0338", $u . "\x{3000}", $chk | Encode::FB_CROAK ) };
58    ok( $@, $@ );
59
60        is decode( "gsm0338", "\x00" . $c ), '@' . decode( "gsm0338", $c ),
61          sprintf( '@: decode \x00+\x%02X', ord($c) );
62
63    # escape seq.
64    my $ecs = "\x1b" . $c;
65    if ( $unesc_seq{$ecs} ) {
66        is decode( "gsm0338", $ecs, $chk ), $unesc_seq{$ecs},
67          sprintf( "ESC: decode ESC+\\x%02X", ord($c) );
68        is encode( "gsm0338", $unesc_seq{$ecs}, $chk ), $ecs,
69          sprintf( "ESC: encode %s ", eu( $unesc_seq{$ecs} ) );
70    }
71    else {
72        is decode( "gsm0338", $ecs, $chk ),
73          "\x{FFFD}",
74          sprintf( "decode ESC+\\x%02X", ord($c) );
75    }
76}
77
78# https://rt.cpan.org/Ticket/Display.html?id=75670
79is decode("gsm0338", "\x09") => chr(0xC7), 'RT75670: decode';
80is encode("gsm0338", chr(0xC7)) => "\x09", 'RT75670: encode';
81
82# https://rt.cpan.org/Public/Bug/Display.html?id=124571
83is decode("gsm0338", encode('gsm0338', '..@@..')), '..@@..';
84is decode("gsm0338", encode('gsm0338', '..@���..')), '..@���..';
85
86# special GSM sequence, ��� is at 1024 byte buffer boundary
87my $gsm = "\x41" . "\x1B\x65" x 1024;
88open my $fh, '<:encoding(gsm0338)', \$gsm or die;
89my $uni = <$fh>;
90close $fh;
91is $uni, "A" . "���" x 1024, 'PerlIO encoding(gsm0338) read works';
92