| 3 |
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| 4 |
Encode::ISO2022 --- ISO/IEC 2022 encoder and decoder |
Encode::ISO2022 --- ISO/IEC 2022 encoder and decoder |
| 5 |
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| 6 |
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=head1 ENCODINGS |
| 7 |
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| 8 |
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=over 4 |
| 9 |
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| 10 |
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=item iso2022 |
| 11 |
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| 12 |
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ISO/IEC 2022:1994. Default status is: |
| 13 |
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| 14 |
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=over 2 |
| 15 |
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| 16 |
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=item CL = C0 = ISO/IEC 6429:1991 C0 set |
| 17 |
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| 18 |
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=item CR = C1 = ISO/IEC 6429:1991 C1 set |
| 19 |
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| 20 |
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=item GL = G0 = ISO/IEC 646:1991 IRV GL(G0) set |
| 21 |
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| 22 |
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=item GR = G1 = empty set |
| 23 |
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| 24 |
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=item G2 = empty set |
| 25 |
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=item G3 = empty set |
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| 28 |
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=back |
| 29 |
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| 30 |
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(Alias: iso/iec2022, iso-2022, 2022, cp2022) |
| 31 |
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| 32 |
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=back |
| 33 |
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| 34 |
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Note that ISO/IEC 2022 based encodings are found in |
| 35 |
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Encode::ISO2022::* modules. This module, Encode::ISO2022 |
| 36 |
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only provides a general ISO/IEC 2022 encoder/decoder. |
| 37 |
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| 38 |
=cut |
=cut |
| 39 |
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| 40 |
require v5.7.3; |
require v5.7.3; |
| 43 |
use vars qw(%CHARSET %CODING_SYSTEM $VERSION); |
use vars qw(%CHARSET %CODING_SYSTEM $VERSION); |
| 44 |
$VERSION=do{my @r=(q$Revision$=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
$VERSION=do{my @r=(q$Revision$=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
| 45 |
use base qw(Encode::Encoding); |
use base qw(Encode::Encoding); |
| 46 |
__PACKAGE__->Define (qw/iso-2022 iso2022 2022 cp2022/); |
__PACKAGE__->Define (qw!iso-2022 iso/iec2022 iso2022 2022 cp2022!); |
| 47 |
require Encode::Charset; |
require Encode::Charset; |
| 48 |
*CHARSET = \%Encode::Charset::CHARSET; |
*CHARSET = \%Encode::Charset::CHARSET; |
| 49 |
*CODING_SYSTEM = \%Encode::Charset::CODING_SYSTEM; |
*CODING_SYSTEM = \%Encode::Charset::CODING_SYSTEM; |
| 81 |
} |
} |
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| 83 |
### --- Encode::ISO2022 unique functions |
### --- Encode::ISO2022 unique functions |
| 84 |
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*new_object = \&Encode::Charset::new_object; |
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## Make a new ISO/IEC 2022-buffers object with default status |
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sub new_object { |
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my %C; |
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$C{bit} = 8; |
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$C{CL} = 'C0'; $C{CR} = 'C1'; $C{ESC_Fe} = 'C1'; |
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$C{C0} = $CHARSET{C0}->{"\x40"}; ## ISO/IEC 6429:1991 C0 |
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$C{C1} = $CHARSET{C1}->{'64291991C1'}; ## ISO/IEC 6429:1991 C1 |
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$C{GL} = 'G0'; $C{GR} = 'G1'; |
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$C{G0} = $CHARSET{G94}->{"\x42"}; ## ISO/IEC 646:1991 IRV |
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#$C{G1} = $CHARSET{G96}->{"\x41"}; ## ISO/IEC 8859-1 GR |
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$C{G1} = $CHARSET{G94}->{"\x7E"}; ## empty set |
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$C{G2} = $CHARSET{G94}->{"\x7E"}; ## empty set |
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$C{G3} = $CHARSET{G94}->{"\x7E"}; ## empty set |
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$C{coding_system} = $CODING_SYSTEM{"\x40"}; ## ISO/IEC 2022 |
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$C{option} = { |
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C1invoke_to_right => 0, ## C1 invoked to: (0: ESC Fe, 1: CR) |
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G94n_designate_long => 0, ## (1: ESC 02/04 02/08 04/00..02) |
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designate_to => { ## Designated G buffer (-1: not be outputed) |
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C0 => { |
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default => 0, |
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}, |
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C1 => { |
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default => 1, |
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}, |
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G94 => { |
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"\x42" => 0, |
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default => 0, |
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}, |
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G96 => { |
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default => 1, |
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}, |
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G94n => { |
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default => 0, |
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}, |
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G96n => { |
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default => 1, |
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}, |
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coding_system => { |
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default => -1, |
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}, |
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}, |
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Ginvoke_by_single_shift => [0,0,0,0], ## Invoked by SS |
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Ginvoke_to_left => [1,1,1,1], ## Which invoked to? (1: L, 0: R) |
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private_set => { ## Private set vs Final byte |
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C0 => [], |
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C1 => [], |
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G94 => [], |
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G94n => [[],[],[],[],[]], |
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G96 => [], |
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#G96n => [], ## (not implemented) |
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U96n => [], ## mule-unicode sets |
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XC1 => { |
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'64291991C1' => undef, ## ISO/IEC 6429:1991 C1 |
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}, |
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}, |
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reset => { ## Reset status at top of line |
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Gdesignation => "\x42", ## F of designation or 0 |
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Ginvoke => 1, |
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}, |
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undef_char => ["\x3F", {type => 'G94', charset => 'B'}], |
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use_revision => 1, ## Output IRR |
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}; |
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\%C; |
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} |
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| 85 |
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| 86 |
sub iso2022_to_internal ($;\%) { |
sub iso2022_to_internal ($;\%) { |
| 87 |
my ($s, $C) = @_; |
my ($s, $C) = @_; |
| 88 |
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$C ||= &new_object; |
| 89 |
my $t = ''; |
my $t = ''; |
| 90 |
$s =~ s{ |
$s =~ s{ |
| 91 |
^((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
^((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
| 94 |
$t = _iso2022_to_internal ($i2, $C); |
$t = _iso2022_to_internal ($i2, $C); |
| 95 |
''; |
''; |
| 96 |
}gesx; |
}gesx; |
| 97 |
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my $pad = ''; |
| 98 |
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use re 'eval'; |
| 99 |
$s =~ s{ |
$s =~ s{ |
| 100 |
## ISO/IEC 2022 |
## ISO/IEC 2022 |
| 101 |
\x1B\x25\x40((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
(??{"$pad\x1B$pad\x25$pad\x40"})((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
| 102 |
## UTF-8 |
## UTF-8 |
| 103 |
|\x1B\x25(?:\x47|\x2F[\x47-\x49])((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
|(??{"$pad\x1B$pad\x25$pad(?:\x47|\x2F$pad"."[\x47-\x49])"}) |
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((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
| 105 |
## UCS-2, UTF-16 |
## UCS-2, UTF-16 |
| 106 |
|\x1B\x25\x2F[\x40\x43\x45\x4A-\x4C] |
|(??{"$pad\x1B$pad\x25$pad\x2F$pad"})([\x40\x43\x45\x4A-\x4C]) |
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((?!\x00\x1B\x00\x25\x00\x2F?\x00[\x30-\x7E].)*) |
((?:(?!\x00\x1B\x00\x25(?:\x00\x2F)?\x00[\x30-\x7E])..)*) |
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## UCS-4 |
## UCS-4 |
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|\x1B\x25\x2F[\x41\x44\x46] |
|(??{"$pad\x1B$pad\x25$pad\x2F$pad"})[\x41\x44\x46] |
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((?!\x00\x00\x00\x1B\x00\x00\x00\x25\x00\x00\x00\x2F? |
((?:(?!\x00\x00\x00\x1B\x00\x00\x00\x25(?:\x00\x00\x00\x2F)? |
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\x00\x00\x00[\x30-\x7E].)*) |
\x00\x00\x00[\x30-\x7E])....)*) |
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## with standard return |
## with standard return |
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|\x1B\x25([\x30-\x7E])((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
|(??{"$pad\x1B$pad\x25$pad"})([\x30-\x7E]) |
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((?:(?!\x1B\x25\x2F?[\x30-\x7E]).)*) |
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## without standard return |
## without standard return |
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|\x1B\x25\x2F([\x30-\x7E])(.*) |
|(??{"$pad\x1B$pad\x25$pad\x2F$pad"})([\x30-\x7E])(.*) |
| 117 |
}{ |
}{ |
| 118 |
my ($i2,$u8,$Fu2,$u2,$u4,$Fsr,$sr,$Fnsr,$nsr) = ($1,$2,$3,$4,$5,$6,$7,$8,$9); |
my ($i2,$u8,$Fu2,$u2,$u4,$Fsr,$sr,$Fnsr,$nsr) = ($1,$2,$3,$4,$5,$6,$7,$8,$9); |
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my $r = ''; |
my $r = ''; |
| 120 |
if (defined $i2) { |
if (defined $i2) { |
| 121 |
$r = _iso2022_to_internal ($i2, $C); |
$r = _iso2022_to_internal ($i2, $C); $pad = ''; |
| 122 |
} elsif (defined $u8) { |
} elsif (defined $u8) { |
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$r = Encode::decode ('utf8', $u8); |
$r = Encode::decode ('utf8', $u8); $pad = ''; |
| 124 |
} elsif ($Fu2) { |
} elsif ($Fu2) { |
| 125 |
if (ord ($Fu2) > 0x49) { |
if (ord ($Fu2) > 0x49) { |
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$r = Encode::decode ('utf-16be', $u2); |
$r = Encode::decode ('utf-16be', $u2); |
| 127 |
} else { |
} else { |
| 128 |
$r = Encode::decode ('ucs-2be', $u2); |
$r = Encode::decode ('ucs-2be', $u2); |
| 129 |
} |
} |
| 130 |
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$pad = "\x00"; |
| 131 |
} elsif (defined $u4) { |
} elsif (defined $u4) { |
| 132 |
$r = Encode::decode ('ucs-4be', $u2); |
$r = Encode::decode ('ucs-4be', $u2); $pad = "\x00\x00\x00"; |
| 133 |
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} elsif (defined $Fsr && $CODING_SYSTEM{$Fsr}->{perl_name}) { |
| 134 |
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$r = Encode::decode ($CODING_SYSTEM{$Fsr}->{perl_name}, $sr); $pad = ''; |
| 135 |
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} elsif (defined $Fnsr && $CODING_SYSTEM{$Fnsr}->{perl_name}) { |
| 136 |
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$r = Encode::decode ($CODING_SYSTEM{$Fnsr}->{perl_name}, $nsr); $pad = ''; |
| 137 |
} else { ## temporary |
} else { ## temporary |
| 138 |
$r = '?+'; |
$r = '?' x length ($sr.$nsr); $pad = ''; |
| 139 |
} |
} |
| 140 |
$r; |
$r; |
| 141 |
}gesx; |
}gesx; |
| 148 |
"\x28"=>'G0',"\x29"=>'G1',"\x2A"=>'G2',"\x2B"=>'G3', |
"\x28"=>'G0',"\x29"=>'G1',"\x2A"=>'G2',"\x2B"=>'G3', |
| 149 |
"\x2C"=>'G0',"\x2D"=>'G1',"\x2E"=>'G2',"\x2F"=>'G3', |
"\x2C"=>'G0',"\x2D"=>'G1',"\x2E"=>'G2',"\x2F"=>'G3', |
| 150 |
); |
); |
|
$C ||= &new_object; |
|
| 151 |
|
|
| 152 |
use re 'eval'; |
use re 'eval'; |
| 153 |
$s =~ s{ |
$s =~ s{ |
| 154 |
((??{ $_CHARS_to_RANGE{'l'.$C->{$C->{GL}}->{chars}} |
((??{ $_CHARS_to_RANGE{'l'.$C->{$C->{GL}}->{chars}} |
| 155 |
. qq/{$C->{$C->{GL}}->{dimension},$C->{$C->{GL}}->{dimension}}/ })) |
. qq/{$C->{$C->{GL}}->{dimension},$C->{$C->{GL}}->{dimension}}/ })) |
| 156 |
|((??{ $_CHARS_to_RANGE{'r'.$C->{$C->{GL}}->{chars}} |
|((??{ $_CHARS_to_RANGE{'r'.$C->{$C->{GR}}->{chars}} |
| 157 |
. qq/{$C->{$C->{GR}}->{dimension},$C->{$C->{GR}}->{dimension}}/ })) |
. qq/{$C->{$C->{GR}}->{dimension},$C->{$C->{GR}}->{dimension}}/ })) |
|
|
|
| 158 |
| (??{ q/(?:/ . ($C->{$C->{CR}}->{r_SS2} || '(?!)') |
| (??{ q/(?:/ . ($C->{$C->{CR}}->{r_SS2} || '(?!)') |
| 159 |
. ($C->{$C->{ESC_Fe}}->{r_SS2_ESC} ? |
. ($C->{$C->{ESC_Fe}}->{r_SS2_ESC} ? |
| 160 |
qq/|$C->{$C->{ESC_Fe}}->{r_SS2_ESC}/ : '') |
qq/|$C->{$C->{ESC_Fe}}->{r_SS2_ESC}/ : '') |
| 163 |
||$C->{$C->{CL}}->{r_LS1}? ## ISO/IEC 6429:1992 9 |
||$C->{$C->{CL}}->{r_LS1}? ## ISO/IEC 6429:1992 9 |
| 164 |
qq/[$C->{$C->{CL}}->{r_LS0}$C->{$C->{CL}}->{r_LS1}]*/:'') |
qq/[$C->{$C->{CL}}->{r_LS0}$C->{$C->{CL}}->{r_LS1}]*/:'') |
| 165 |
}) |
}) |
| 166 |
((??{ $_CHARS_to_RANGE{'b'.$C->{$C->{GL}}->{chars}} |
((??{ $_CHARS_to_RANGE{'b'.$C->{G2}->{chars}} |
| 167 |
. qq/{$C->{G2}->{dimension},$C->{G2}->{dimension}}/ })) |
. qq/{$C->{G2}->{dimension},$C->{G2}->{dimension}}/ })) |
| 168 |
| (??{ q/(?:/ . ($C->{$C->{CR}}->{r_SS3} || '(?!)') |
| (??{ q/(?:/ . ($C->{$C->{CR}}->{r_SS3} || '(?!)') |
| 169 |
. ($C->{$C->{ESC_Fe}}->{r_SS3_ESC} ? |
. ($C->{$C->{ESC_Fe}}->{r_SS3_ESC} ? |
| 173 |
|| $C->{$C->{CL}}->{r_LS1}? ## ISO/IEC 6429:1992 9 |
|| $C->{$C->{CL}}->{r_LS1}? ## ISO/IEC 6429:1992 9 |
| 174 |
qq/[$C->{$C->{CL}}->{r_LS0}$C->{$C->{CL}}->{r_LS1}]*/:'') |
qq/[$C->{$C->{CL}}->{r_LS0}$C->{$C->{CL}}->{r_LS1}]*/:'') |
| 175 |
}) |
}) |
| 176 |
((??{ $_CHARS_to_RANGE{'b'.$C->{$C->{GL}}->{chars}} |
((??{ $_CHARS_to_RANGE{'b'.$C->{G3}->{chars}} |
| 177 |
. qq/{$C->{G3}->{dimension},$C->{G3}->{dimension}}/ })) |
. qq/{$C->{G3}->{dimension},$C->{G3}->{dimension}}/ })) |
| 178 |
|
|
| 179 |
## Locking shift |
## Locking shift |
| 180 |
|( \x1B[\x6E\x6F\x7C-\x7E] |
|( (??{ $C->{$C->{CL}}->{r_LS0}||'(?!)' }) |
|
|(??{ $C->{$C->{CL}}->{r_LS0}||'(?!)' }) |
|
| 181 |
|(??{ $C->{$C->{CL}}->{r_LS1}||'(?!)' }) |
|(??{ $C->{$C->{CL}}->{r_LS1}||'(?!)' }) |
| 182 |
) |
) |
| 183 |
|
|
| 292 |
$C->{GL} = 'G2'; ''; |
$C->{GL} = 'G2'; ''; |
| 293 |
} elsif ($Fs eq "\x6F") { ## LS3 |
} elsif ($Fs eq "\x6F") { ## LS3 |
| 294 |
$C->{GL} = 'G3'; ''; |
$C->{GL} = 'G3'; ''; |
| 295 |
} elsif ($Fs eq "\x7E") { ## LS1R |
} elsif ($Fs eq "\x7E" || $Fs eq "\x6B") { ## LS1R |
| 296 |
$C->{GR} = 'G1'; $C->{GL} = 'G1' if $C->{bit} == 7; ''; |
$C->{GR} = 'G1'; $C->{GL} = 'G1' if $C->{bit} == 7; ''; |
| 297 |
} elsif ($Fs eq "\x7D") { ## LS2R |
} elsif ($Fs eq "\x7D" || $Fs eq "\x6C") { ## LS2R |
| 298 |
$C->{GR} = 'G2'; $C->{GL} = 'G2' if $C->{bit} == 7; ''; |
$C->{GR} = 'G2'; $C->{GL} = 'G2' if $C->{bit} == 7; ''; |
| 299 |
} elsif ($Fs eq "\x7C") { ## LS3R |
} elsif ($Fs eq "\x7C" || $Fs eq "\x6D") { ## LS3R |
| 300 |
$C->{GR} = 'G3'; $C->{GL} = 'G3' if $C->{bit} == 7; ''; |
$C->{GR} = 'G3'; $C->{GL} = 'G3' if $C->{bit} == 7; ''; |
| 301 |
} else { |
} else { |
| 302 |
chr ($CHARSET{single_control}->{Fs}->{ucs} + (ord ($Fs) - 0x60)); |
chr ($CHARSET{single_control}->{Fs}->{ucs} + (ord ($Fs) - 0x60)); |
| 318 |
$C->{GL} = 'G0'; ''; |
$C->{GL} = 'G0'; ''; |
| 319 |
} elsif ($ls eq $C->{$C->{CL}}->{LS1}) { |
} elsif ($ls eq $C->{$C->{CL}}->{LS1}) { |
| 320 |
$C->{GL} = 'G1'; ''; |
$C->{GL} = 'G1'; ''; |
|
} elsif ($ls =~ /\x1B([\x6E\x6F])/) { |
|
|
$C->{GL} = {"\x6E"=>2, "\x6F"=>3}->{$1}; ''; |
|
|
} elsif ($ls =~ /\x1B([\x7C-\x7E])/) { |
|
|
$C->{GR} = {"\x7E"=>1, "\x7D"=>2, "\x7C"=>3}->{$1}; ''; |
|
| 321 |
} |
} |
| 322 |
## Control sequence |
## Control sequence |
| 323 |
} elsif ($csi) { |
} elsif ($csi) { |
| 464 |
if (defined $t) { |
if (defined $t) { |
| 465 |
$r .= $t; |
$r .= $t; |
| 466 |
} else { |
} else { |
| 467 |
$t = _i2g ($C->{option}->{undef_char}->[0], $C, |
unless ($C->{option}->{undef_char}->[0] eq "\x20") { |
| 468 |
%{ $C->{option}->{undef_char}->[1] }); |
$t = _i2g ($C->{option}->{undef_char}->[0], $C, |
| 469 |
|
%{ $C->{option}->{undef_char}->[1] }); |
| 470 |
|
} else { ## SP |
| 471 |
|
$t = _back2ascii ($C) . "\x20"; |
| 472 |
|
} |
| 473 |
$r .= $C->{coding_system} eq $CODING_SYSTEM{"\x40"} ? |
$r .= $C->{coding_system} eq $CODING_SYSTEM{"\x40"} ? |
| 474 |
$t : _i2o ($t, $C, cs_F => "\x40"); |
$t : _i2o ($t, $C, cs_F => "\x40"); |
| 475 |
} |
} |