| # |
| # $Id: GSM0338.pm,v 2.1 2008/05/07 20:56:05 dankogai Exp $ |
| # |
| package Encode::GSM0338; |
| |
| use strict; |
| use warnings; |
| use Carp; |
| |
| use vars qw($VERSION); |
| $VERSION = do { my @r = ( q$Revision: 2.1 $ =~ /\d+/g ); sprintf "%d." . "%02d" x $#r, @r }; |
| |
| use Encode qw(:fallbacks); |
| |
| use base qw(Encode::Encoding); |
| __PACKAGE__->Define('gsm0338'); |
| |
| sub needs_lines { 1 } |
| sub perlio_ok { 0 } |
| |
| use utf8; |
| our %UNI2GSM = ( |
| "\x{0040}" => "\x00", # COMMERCIAL AT |
| "\x{000A}" => "\x0A", # LINE FEED |
| "\x{000C}" => "\x1B\x0A", # FORM FEED |
| "\x{000D}" => "\x0D", # CARRIAGE RETURN |
| "\x{0020}" => "\x20", # SPACE |
| "\x{0021}" => "\x21", # EXCLAMATION MARK |
| "\x{0022}" => "\x22", # QUOTATION MARK |
| "\x{0023}" => "\x23", # NUMBER SIGN |
| "\x{0024}" => "\x02", # DOLLAR SIGN |
| "\x{0025}" => "\x25", # PERCENT SIGN |
| "\x{0026}" => "\x26", # AMPERSAND |
| "\x{0027}" => "\x27", # APOSTROPHE |
| "\x{0028}" => "\x28", # LEFT PARENTHESIS |
| "\x{0029}" => "\x29", # RIGHT PARENTHESIS |
| "\x{002A}" => "\x2A", # ASTERISK |
| "\x{002B}" => "\x2B", # PLUS SIGN |
| "\x{002C}" => "\x2C", # COMMA |
| "\x{002D}" => "\x2D", # HYPHEN-MINUS |
| "\x{002E}" => "\x2E", # FULL STOP |
| "\x{002F}" => "\x2F", # SOLIDUS |
| "\x{0030}" => "\x30", # DIGIT ZERO |
| "\x{0031}" => "\x31", # DIGIT ONE |
| "\x{0032}" => "\x32", # DIGIT TWO |
| "\x{0033}" => "\x33", # DIGIT THREE |
| "\x{0034}" => "\x34", # DIGIT FOUR |
| "\x{0035}" => "\x35", # DIGIT FIVE |
| "\x{0036}" => "\x36", # DIGIT SIX |
| "\x{0037}" => "\x37", # DIGIT SEVEN |
| "\x{0038}" => "\x38", # DIGIT EIGHT |
| "\x{0039}" => "\x39", # DIGIT NINE |
| "\x{003A}" => "\x3A", # COLON |
| "\x{003B}" => "\x3B", # SEMICOLON |
| "\x{003C}" => "\x3C", # LESS-THAN SIGN |
| "\x{003D}" => "\x3D", # EQUALS SIGN |
| "\x{003E}" => "\x3E", # GREATER-THAN SIGN |
| "\x{003F}" => "\x3F", # QUESTION MARK |
| "\x{0041}" => "\x41", # LATIN CAPITAL LETTER A |
| "\x{0042}" => "\x42", # LATIN CAPITAL LETTER B |
| "\x{0043}" => "\x43", # LATIN CAPITAL LETTER C |
| "\x{0044}" => "\x44", # LATIN CAPITAL LETTER D |
| "\x{0045}" => "\x45", # LATIN CAPITAL LETTER E |
| "\x{0046}" => "\x46", # LATIN CAPITAL LETTER F |
| "\x{0047}" => "\x47", # LATIN CAPITAL LETTER G |
| "\x{0048}" => "\x48", # LATIN CAPITAL LETTER H |
| "\x{0049}" => "\x49", # LATIN CAPITAL LETTER I |
| "\x{004A}" => "\x4A", # LATIN CAPITAL LETTER J |
| "\x{004B}" => "\x4B", # LATIN CAPITAL LETTER K |
| "\x{004C}" => "\x4C", # LATIN CAPITAL LETTER L |
| "\x{004D}" => "\x4D", # LATIN CAPITAL LETTER M |
| "\x{004E}" => "\x4E", # LATIN CAPITAL LETTER N |
| "\x{004F}" => "\x4F", # LATIN CAPITAL LETTER O |
| "\x{0050}" => "\x50", # LATIN CAPITAL LETTER P |
| "\x{0051}" => "\x51", # LATIN CAPITAL LETTER Q |
| "\x{0052}" => "\x52", # LATIN CAPITAL LETTER R |
| "\x{0053}" => "\x53", # LATIN CAPITAL LETTER S |
| "\x{0054}" => "\x54", # LATIN CAPITAL LETTER T |
| "\x{0055}" => "\x55", # LATIN CAPITAL LETTER U |
| "\x{0056}" => "\x56", # LATIN CAPITAL LETTER V |
| "\x{0057}" => "\x57", # LATIN CAPITAL LETTER W |
| "\x{0058}" => "\x58", # LATIN CAPITAL LETTER X |
| "\x{0059}" => "\x59", # LATIN CAPITAL LETTER Y |
| "\x{005A}" => "\x5A", # LATIN CAPITAL LETTER Z |
| "\x{005F}" => "\x11", # LOW LINE |
| "\x{0061}" => "\x61", # LATIN SMALL LETTER A |
| "\x{0062}" => "\x62", # LATIN SMALL LETTER B |
| "\x{0063}" => "\x63", # LATIN SMALL LETTER C |
| "\x{0064}" => "\x64", # LATIN SMALL LETTER D |
| "\x{0065}" => "\x65", # LATIN SMALL LETTER E |
| "\x{0066}" => "\x66", # LATIN SMALL LETTER F |
| "\x{0067}" => "\x67", # LATIN SMALL LETTER G |
| "\x{0068}" => "\x68", # LATIN SMALL LETTER H |
| "\x{0069}" => "\x69", # LATIN SMALL LETTER I |
| "\x{006A}" => "\x6A", # LATIN SMALL LETTER J |
| "\x{006B}" => "\x6B", # LATIN SMALL LETTER K |
| "\x{006C}" => "\x6C", # LATIN SMALL LETTER L |
| "\x{006D}" => "\x6D", # LATIN SMALL LETTER M |
| "\x{006E}" => "\x6E", # LATIN SMALL LETTER N |
| "\x{006F}" => "\x6F", # LATIN SMALL LETTER O |
| "\x{0070}" => "\x70", # LATIN SMALL LETTER P |
| "\x{0071}" => "\x71", # LATIN SMALL LETTER Q |
| "\x{0072}" => "\x72", # LATIN SMALL LETTER R |
| "\x{0073}" => "\x73", # LATIN SMALL LETTER S |
| "\x{0074}" => "\x74", # LATIN SMALL LETTER T |
| "\x{0075}" => "\x75", # LATIN SMALL LETTER U |
| "\x{0076}" => "\x76", # LATIN SMALL LETTER V |
| "\x{0077}" => "\x77", # LATIN SMALL LETTER W |
| "\x{0078}" => "\x78", # LATIN SMALL LETTER X |
| "\x{0079}" => "\x79", # LATIN SMALL LETTER Y |
| "\x{007A}" => "\x7A", # LATIN SMALL LETTER Z |
| "\x{000C}" => "\x1B\x0A", # FORM FEED |
| "\x{005B}" => "\x1B\x3C", # LEFT SQUARE BRACKET |
| "\x{005C}" => "\x1B\x2F", # REVERSE SOLIDUS |
| "\x{005D}" => "\x1B\x3E", # RIGHT SQUARE BRACKET |
| "\x{005E}" => "\x1B\x14", # CIRCUMFLEX ACCENT |
| "\x{007B}" => "\x1B\x28", # LEFT CURLY BRACKET |
| "\x{007C}" => "\x1B\x40", # VERTICAL LINE |
| "\x{007D}" => "\x1B\x29", # RIGHT CURLY BRACKET |
| "\x{007E}" => "\x1B\x3D", # TILDE |
| "\x{00A0}" => "\x1B", # NO-BREAK SPACE |
| "\x{00A1}" => "\x40", # INVERTED EXCLAMATION MARK |
| "\x{00A3}" => "\x01", # POUND SIGN |
| "\x{00A4}" => "\x24", # CURRENCY SIGN |
| "\x{00A5}" => "\x03", # YEN SIGN |
| "\x{00A7}" => "\x5F", # SECTION SIGN |
| "\x{00BF}" => "\x60", # INVERTED QUESTION MARK |
| "\x{00C4}" => "\x5B", # LATIN CAPITAL LETTER A WITH DIAERESIS |
| "\x{00C5}" => "\x0E", # LATIN CAPITAL LETTER A WITH RING ABOVE |
| "\x{00C6}" => "\x1C", # LATIN CAPITAL LETTER AE |
| "\x{00C9}" => "\x1F", # LATIN CAPITAL LETTER E WITH ACUTE |
| "\x{00D1}" => "\x5D", # LATIN CAPITAL LETTER N WITH TILDE |
| "\x{00D6}" => "\x5C", # LATIN CAPITAL LETTER O WITH DIAERESIS |
| "\x{00D8}" => "\x0B", # LATIN CAPITAL LETTER O WITH STROKE |
| "\x{00DC}" => "\x5E", # LATIN CAPITAL LETTER U WITH DIAERESIS |
| "\x{00DF}" => "\x1E", # LATIN SMALL LETTER SHARP S |
| "\x{00E0}" => "\x7F", # LATIN SMALL LETTER A WITH GRAVE |
| "\x{00E4}" => "\x7B", # LATIN SMALL LETTER A WITH DIAERESIS |
| "\x{00E5}" => "\x0F", # LATIN SMALL LETTER A WITH RING ABOVE |
| "\x{00E6}" => "\x1D", # LATIN SMALL LETTER AE |
| "\x{00E7}" => "\x09", # LATIN SMALL LETTER C WITH CEDILLA |
| "\x{00E8}" => "\x04", # LATIN SMALL LETTER E WITH GRAVE |
| "\x{00E9}" => "\x05", # LATIN SMALL LETTER E WITH ACUTE |
| "\x{00EC}" => "\x07", # LATIN SMALL LETTER I WITH GRAVE |
| "\x{00F1}" => "\x7D", # LATIN SMALL LETTER N WITH TILDE |
| "\x{00F2}" => "\x08", # LATIN SMALL LETTER O WITH GRAVE |
| "\x{00F6}" => "\x7C", # LATIN SMALL LETTER O WITH DIAERESIS |
| "\x{00F8}" => "\x0C", # LATIN SMALL LETTER O WITH STROKE |
| "\x{00F9}" => "\x06", # LATIN SMALL LETTER U WITH GRAVE |
| "\x{00FC}" => "\x7E", # LATIN SMALL LETTER U WITH DIAERESIS |
| "\x{0393}" => "\x13", # GREEK CAPITAL LETTER GAMMA |
| "\x{0394}" => "\x10", # GREEK CAPITAL LETTER DELTA |
| "\x{0398}" => "\x19", # GREEK CAPITAL LETTER THETA |
| "\x{039B}" => "\x14", # GREEK CAPITAL LETTER LAMDA |
| "\x{039E}" => "\x1A", # GREEK CAPITAL LETTER XI |
| "\x{03A0}" => "\x16", # GREEK CAPITAL LETTER PI |
| "\x{03A3}" => "\x18", # GREEK CAPITAL LETTER SIGMA |
| "\x{03A6}" => "\x12", # GREEK CAPITAL LETTER PHI |
| "\x{03A8}" => "\x17", # GREEK CAPITAL LETTER PSI |
| "\x{03A9}" => "\x15", # GREEK CAPITAL LETTER OMEGA |
| "\x{20AC}" => "\x1B\x65", # EURO SIGN |
| ); |
| our %GSM2UNI = reverse %UNI2GSM; |
| our $ESC = "\x1b"; |
| our $ATMARK = "\x40"; |
| our $FBCHAR = "\x3F"; |
| our $NBSP = "\x{00A0}"; |
| |
| #define ERR_DECODE_NOMAP "%s \"\\x%02" UVXf "\" does not map to Unicode" |
| |
| sub decode ($$;$) { |
| my ( $obj, $bytes, $chk ) = @_; |
| my $str; |
| while ( length $bytes ) { |
| my $c = substr( $bytes, 0, 1, '' ); |
| my $u; |
| if ( $c eq "\x00" ) { |
| my $c2 = substr( $bytes, 0, 1, '' ); |
| $u = |
| !length $c2 ? $ATMARK |
| : $c2 eq "\x00" ? "\x{0000}" |
| : exists $GSM2UNI{$c2} ? $ATMARK . $GSM2UNI{$c2} |
| : $chk |
| ? croak sprintf( "\\x%02X\\x%02X does not map to Unicode", |
| ord($c), ord($c2) ) |
| : $ATMARK . $FBCHAR; |
| |
| } |
| elsif ( $c eq $ESC ) { |
| my $c2 = substr( $bytes, 0, 1, '' ); |
| $u = |
| exists $GSM2UNI{ $c . $c2 } ? $GSM2UNI{ $c . $c2 } |
| : exists $GSM2UNI{$c2} ? $NBSP . $GSM2UNI{$c2} |
| : $chk |
| ? croak sprintf( "\\x%02X\\x%02X does not map to Unicode", |
| ord($c), ord($c2) ) |
| : $NBSP . $FBCHAR; |
| } |
| else { |
| $u = |
| exists $GSM2UNI{$c} |
| ? $GSM2UNI{$c} |
| : $chk ? ref $chk eq 'CODE' |
| ? $chk->( ord $c ) |
| : croak sprintf( "\\x%02X does not map to Unicode", ord($c) ) |
| : $FBCHAR; |
| } |
| $str .= $u; |
| } |
| $_[1] = $bytes if $chk; |
| return $str; |
| } |
| |
| #define ERR_ENCODE_NOMAP "\"\\x{%04" UVxf "}\" does not map to %s" |
| |
| sub encode($$;$) { |
| my ( $obj, $str, $chk ) = @_; |
| my $bytes; |
| while ( length $str ) { |
| my $u = substr( $str, 0, 1, '' ); |
| my $c; |
| $bytes .= |
| exists $UNI2GSM{$u} |
| ? $UNI2GSM{$u} |
| : $chk ? ref $chk eq 'CODE' |
| ? $chk->( ord($u) ) |
| : croak sprintf( "\\x{%04x} does not map to %s", |
| ord($u), $obj->name ) |
| : $FBCHAR; |
| } |
| $_[1] = $str if $chk; |
| return $bytes; |
| } |
| |
| 1; |
| __END__ |
| |
| =head1 NAME |
| |
| Encode::GSM0338 -- ESTI GSM 03.38 Encoding |
| |
| =head1 SYNOPSIS |
| |
| use Encode qw/encode decode/; |
| $gsm0338 = encode("gsm0338", $utf8); # loads Encode::GSM0338 implicitly |
| $utf8 = decode("gsm0338", $gsm0338); # ditto |
| |
| =head1 DESCRIPTION |
| |
| GSM0338 is for GSM handsets. Though it shares alphanumerals with ASCII, |
| control character ranges and other parts are mapped very differently, |
| mainly to store Greek characters. There are also escape sequences |
| (starting with 0x1B) to cover e.g. the Euro sign. |
| |
| This was once handled by L<Encode::Bytes> but because of all those |
| unusual specifications, Encode 2.20 has relocated the support to |
| this module. |
| |
| =head1 NOTES |
| |
| Unlike most other encodings, the following aways croaks on error |
| for any $chk that evaluates to true. |
| |
| $gsm0338 = encode("gsm0338", $utf8 $chk); |
| $utf8 = decode("gsm0338", $gsm0338, $chk); |
| |
| So if you want to check the validity of the encoding, surround the |
| expression with C<eval {}> block as follows; |
| |
| eval { |
| $utf8 = decode("gsm0338", $gsm0338, $chk); |
| }; |
| if ($@){ |
| # handle exception here |
| } |
| |
| =head1 BUGS |
| |
| ESTI GSM 03.38 Encoding itself. |
| |
| Mapping \x00 to '@' causes too much pain everywhere. |
| |
| Its use of \x1b (escape) is also very questionable. |
| |
| Because of those two, the code paging approach used use in ucm-based |
| Encoding SOMETIMES fails so this module was written. |
| |
| =head1 SEE ALSO |
| |
| L<Encode> |
| |
| =cut |