66 |
### --- Encode::ISO2022 unique functions |
### --- Encode::ISO2022 unique functions |
67 |
*new_object = \&Encode::Charset::new_object; |
*new_object = \&Encode::Charset::new_object; |
68 |
|
|
69 |
sub iso2022_to_internal ($;\%) { |
sub iso2022_to_internal ($;%) { |
70 |
my ($s, $C) = @_; |
my ($s, $C) = @_; |
71 |
$C ||= &new_object; |
$C ||= &new_object; |
72 |
my $t = ''; |
my $t = ''; |
129 |
# when this unexpected behavior is fixed or someone finds |
# when this unexpected behavior is fixed or someone finds |
130 |
# better way to avoid it, we will rewrite this code. |
# better way to avoid it, we will rewrite this code. |
131 |
&_iso2022_to_internal (undef); |
&_iso2022_to_internal (undef); |
132 |
sub _iso2022_to_internal ($;\%) { |
sub _iso2022_to_internal ($;%) { |
133 |
eval q{ sub __iso2022_to_internal ($;\%) { 0 } }; |
eval q{ sub __iso2022_to_internal ($;%) { 0 } }; |
134 |
eval q{ |
eval q{ |
135 |
sub __iso2022_to_internal ($;\%) { |
sub __iso2022_to_internal ($;%) { |
136 |
use re 'eval'; |
use re 'eval'; |
137 |
my ($s, $C) = @_; |
my ($s, $C) = @_; |
138 |
my %_GB_to_GN = ( |
my %_GB_to_GN = ( |
206 |
$c = $c * $C->{$C->{GL}}->{chars} + unpack ('C', $_) - $m; |
$c = $c * $C->{$C->{GL}}->{chars} + unpack ('C', $_) - $m; |
207 |
} |
} |
208 |
chr ($C->{$C->{GL}}->{ucs} + $c); |
chr ($C->{$C->{GL}}->{ucs} + $c); |
|
## Control, SP, or broken data |
|
|
## TODO: support control sets other than ISO/IEC 6429's |
|
|
} elsif (defined $misc) { |
|
|
$misc; |
|
209 |
## GR graphic character |
## GR graphic character |
210 |
} elsif ($gr) { |
} elsif ($gr) { |
211 |
my $c = 0; |
my $c = 0; |
214 |
$c = $c * $C->{$C->{GR}}->{chars} + unpack ('C', $_) - $m; |
$c = $c * $C->{$C->{GR}}->{chars} + unpack ('C', $_) - $m; |
215 |
} |
} |
216 |
chr ($C->{$C->{GR}}->{ucs} + $c); |
chr ($C->{$C->{GR}}->{ucs} + $c); |
217 |
|
## Control, SP, or broken data |
218 |
|
## TODO: support control sets other than ISO/IEC 6429's |
219 |
|
} elsif (defined $misc) { |
220 |
|
$misc; |
221 |
## Graphic character with SS2 |
## Graphic character with SS2 |
222 |
} elsif ($ss2) { |
} elsif ($ss2) { |
223 |
$ss2 =~ tr/\x80-\xFF/\x00-\x7F/; |
$ss2 =~ tr/\x80-\xFF/\x00-\x7F/; |
236 |
chr ($C->{G3}->{ucs} + $c); |
chr ($C->{G3}->{ucs} + $c); |
237 |
## Escape sequence |
## Escape sequence |
238 |
} elsif ($esc) { |
} elsif ($esc) { |
239 |
## IRR (revision number) |
if ($esc =~ /\x1B\x26([\x40-\x7E])/) { ## 6F (IRR) = ESC 02/06 Ft |
|
if ($esc =~ /\x1B\x26([\x40-\x7E])/) { |
|
240 |
$C->{_irr} = $1; $esc = ''; |
$C->{_irr} = $1; $esc = ''; |
241 |
} else { |
} else { |
242 |
$esc =~ s{ |
$esc =~ s{ |
260 |
$CZD, $C1D, $Fs, $sI, $sF,$ACS) |
$CZD, $C1D, $Fs, $sI, $sF,$ACS) |
261 |
= ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15); |
= ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15); |
262 |
my $rev = $C->{_irr} || ''; |
my $rev = $C->{_irr} || ''; |
263 |
if ($g94_g) { |
my $f2s = $C->{option}->{final_to_set}; |
264 |
$C->{ $_GB_to_GN{ $g94_g } } = $CHARSET{G94}->{ $g94_f.$rev } |
if ($g94_g) { ## ESC 02/08 [I] F |
265 |
|| $CHARSET{G94}->{ $g94_f } |
$C->{ $_GB_to_GN{ $g94_g } } |
266 |
|| $CHARSET{G94}->{ "\x7E" }; ''; |
= $CHARSET{G94}->{ $f2s->{G94}->{$g94_f.$rev} || $g94_f.$rev } |
267 |
} elsif (defined $g94n_f) { |
|| $CHARSET{G94}->{ $f2s->{G94}->{$g94_f} || $g94_f } |
268 |
$C->{ $_GB_to_GN{ $g94n_g } || 'G0' } = $CHARSET{G94n}->{ $g94n_f.$rev } |
|| $CHARSET{G94}->{ "\x7E" }; ''; |
269 |
|| $CHARSET{G94n}->{ $g94n_f } |
} elsif (defined $g94n_f) { ## ESC 02/04 [02/08..11] [I] F |
270 |
|| $CHARSET{G94n}->{ "\x7E" }; ''; |
$C->{ $_GB_to_GN{ $g94n_g } || 'G0' } |
271 |
} elsif ($g96_g) { |
= $CHARSET{G94n}->{ $f2s->{G94n}->{$g94n_f.$rev} || $g94n_f.$rev } |
272 |
$C->{ $_GB_to_GN{ $g96_g } } = $CHARSET{G96}->{ $g96_f.$rev } |
|| $CHARSET{G94n}->{ $f2s->{G94n}->{$g94n_f} || $g94n_f } |
273 |
|| $CHARSET{G96}->{ $g96_f } |
|| $CHARSET{G94n}->{ "\x7E" }; ''; |
274 |
|| $CHARSET{G96}->{ "\x7E" }; ''; |
} elsif ($g96_g) { ## ESC 02/12..15 [I] F |
275 |
} elsif (defined $g96n_f) { |
$C->{ $_GB_to_GN{ $g96_g } } |
276 |
$C->{ $_GB_to_GN{ $g96n_g } } = $CHARSET{G96n}->{ $g96n_f.$rev } |
= $CHARSET{G96}->{ $f2s->{G96}->{$g96_f.$rev} || $g96_f.$rev } |
277 |
|| $CHARSET{G96n}->{ $g96n_f } |
|| $CHARSET{G96}->{ $f2s->{G96}->{$g96_f} || $g96_f } |
278 |
|| $CHARSET{G96n}->{ "\x7E" }; ''; |
|| $CHARSET{G96}->{ "\x7E" }; ''; |
279 |
} elsif ($Fe) { ## ESC Fe => C1 |
} elsif ($g96n_g) { ## ESC 02/04 02/12..15 [I] F |
280 |
|
$C->{ $_GB_to_GN{ $g96n_g } } |
281 |
|
= $CHARSET{G96n}->{ $f2s->{G96n}->{$g96n_f.$rev} || $g96n_f.$rev } |
282 |
|
|| $CHARSET{G96n}->{ $f2s->{G96n}->{$g96n_f} || $g96n_f } |
283 |
|
|| $CHARSET{G96n}->{ "\x7E" }; ''; |
284 |
|
} elsif ($Fe) { ## ESC Fe = C1 |
285 |
chr ($C->{ $C->{ESC_Fe} }->{ucs} + (ord ($Fe) - 0x40)); |
chr ($C->{ $C->{ESC_Fe} }->{ucs} + (ord ($Fe) - 0x40)); |
286 |
} elsif ($CZD) { |
} elsif (defined $Fs) { ## ESC Fs |
|
$C->{C0} = $CHARSET{C0}->{ $CZD.$rev } |
|
|
|| $CHARSET{C0}->{ $CZD } || $CHARSET{C0}->{ "\x7E" }; ''; |
|
|
} elsif ($C1D) { |
|
|
$C->{C1} = $CHARSET{C1}->{ $C1D.$rev } |
|
|
|| $CHARSET{C1}->{ $C1D } || $CHARSET{C1}->{ "\x7E" }; ''; |
|
|
} elsif ($Fs) { |
|
287 |
if ($Fs eq "\x6E") { ## LS2 |
if ($Fs eq "\x6E") { ## LS2 |
288 |
$C->{GL} = 'G2'; ''; |
$C->{GL} = 'G2'; ''; |
289 |
} elsif ($Fs eq "\x6F") { ## LS3 |
} elsif ($Fs eq "\x6F") { ## LS3 |
297 |
} else { |
} else { |
298 |
chr ($CHARSET{single_control}->{Fs}->{ucs} + (ord ($Fs) - 0x60)); |
chr ($CHARSET{single_control}->{Fs}->{ucs} + (ord ($Fs) - 0x60)); |
299 |
} |
} |
300 |
} elsif ($sI) { |
} elsif (defined $CZD) { ## 1F (CZD) = ESC 02/01 [I] F |
301 |
|
$C->{C0} = $CHARSET{C0}->{ $f2s->{C0}->{$CZD.$rev} || $CZD.$rev } |
302 |
|
|| $CHARSET{C0}->{ $f2s->{C0}->{$CZD} || $CZD } |
303 |
|
|| $CHARSET{C0}->{ "\x7E" }; ''; |
304 |
|
} elsif (defined $C1D) { ## 2F (C1D) = ESC 02/02 [I] F |
305 |
|
$C->{C1} = $CHARSET{C1}->{ $f2s->{C1}->{$C1D.$rev} || $C1D.$rev } |
306 |
|
|| $CHARSET{C1}->{ $f2s->{C1}->{$C1D} || $C1D } |
307 |
|
|| $CHARSET{C1}->{ "\x7E" }; ''; |
308 |
|
} elsif ($sI) { ## 3F = ESC 02/03 [I] F |
309 |
chr ($CHARSET{single_control}->{'3F'.$sI}->{ucs} + (ord ($sF) - 0x30)); |
chr ($CHARSET{single_control}->{'3F'.$sI}->{ucs} + (ord ($sF) - 0x30)); |
310 |
} elsif ($ACS) { ## Announcer |
} elsif ($ACS) { ## 0F (Announcer) = ESC 02/00 F |
311 |
if ($ACS eq "\x4A") { $C->{bit} = 7 } |
if ($ACS eq "\x4A") { $C->{bit} = 7 } |
312 |
elsif ($ACS eq "\x4B") { $C->{bit} = 8 } |
elsif ($ACS eq "\x4B") { $C->{bit} = 8 } |
313 |
''; |
''; |
316 |
$C->{_irr} = undef; |
$C->{_irr} = undef; |
317 |
} |
} |
318 |
$esc; |
$esc; |
319 |
## Locking shifts |
} elsif ($ls) { ## Locking shifts = LS0 / LS1 |
|
} elsif ($ls) { |
|
320 |
if ($ls eq $C->{$C->{CL}}->{LS0}) { |
if ($ls eq $C->{$C->{CL}}->{LS0}) { |
321 |
$C->{GL} = 'G0'; ''; |
$C->{GL} = 'G0'; ''; |
322 |
} elsif ($ls eq $C->{$C->{CL}}->{LS1}) { |
} elsif ($ls eq $C->{$C->{CL}}->{LS1}) { |
323 |
$C->{GL} = 'G1'; ''; |
$C->{GL} = 'G1'; ''; |
324 |
} |
} |
325 |
## Control sequence |
} elsif ($csi) { ## Control sequence = CSI [P..] [I] F |
|
} elsif ($csi) { |
|
326 |
$csi =~ tr/\xA0-\xFF/\x20-\x7F/d; |
$csi =~ tr/\xA0-\xFF/\x20-\x7F/d; |
327 |
$csi =~ s/$C->{$C->{CL}}->{LS0}//g if $C->{$C->{CL}}->{LS0}; |
$csi =~ s/$C->{$C->{CL}}->{LS0}//g if $C->{$C->{CL}}->{LS0}; |
328 |
$csi =~ s/$C->{$C->{CL}}->{LS1}//g if $C->{$C->{CL}}->{LS1}; |
$csi =~ s/$C->{$C->{CL}}->{LS1}//g if $C->{$C->{CL}}->{LS1}; |
337 |
|
|
338 |
} # _iso2022_to_internal |
} # _iso2022_to_internal |
339 |
|
|
340 |
sub internal_to_iso2022 ($\%) { |
sub internal_to_iso2022 ($;%) { |
341 |
my ($s, $C) = @_; |
my ($s, $C) = @_; |
342 |
$C ||= &new_object; |
$C ||= &new_object; |
343 |
|
|
344 |
my $r = ''; |
my $r = ''; |
345 |
for my $c (split //, $s) { |
my @c = split //, $s; |
346 |
my $cc = ord $c; Encode::_utf8_off ($c); |
for my $i (0..$#c) { |
347 |
|
my $c = $c[$i]; my $cc = ord $c; Encode::_utf8_off ($c); |
348 |
my $t; |
my $t; |
349 |
if ($cc <= 0x1F) { |
if ($cc <= 0x1F) { |
350 |
$t = _i2c ($c, $C, type => 'C0', charset => '@'); |
$t = _i2c ($c, $C, type => 'C0', charset => '@'); |
353 |
} elsif ($cc < 0x7F) { |
} elsif ($cc < 0x7F) { |
354 |
$t = _i2g ($c, $C, type => 'G94', charset => 'B'); |
$t = _i2g ($c, $C, type => 'G94', charset => 'B'); |
355 |
} elsif ($cc <= 0x9F) { |
} elsif ($cc <= 0x9F) { |
356 |
$t = _i2c ($c, $C, type => 'C1', charset_id => '64291991C1', |
$t = _i2c (pack ('C', $cc), $C, type => 'C1', charset_id => '64291991C1', |
357 |
charset => $C->{option}->{private_set}->{XC1}->{'64291991C1'}); |
charset => $C->{option}->{private_set}->{XC1}->{'64291991C1'}); |
358 |
} elsif ($cc <= 0xFF) { |
} elsif ($cc <= 0xFF) { |
359 |
$t = _i2g (chr($cc-0x80), $C, type => 'G96', charset => 'A'); |
$t = _i2g (pack ('C', $cc-0x80), $C, type => 'G96', charset => 'A'); |
360 |
} elsif ($cc <= 0x24FF) { |
} elsif ($cc <= 0x24FF) { |
361 |
my $c = $cc - 0x100; |
my $c = $cc - 0x100; |
362 |
my $final = $C->{option}->{private_set}->{U96n}->[0]; |
my $final = $C->{option}->{private_set}->{U96n}->[0]; |
453 |
->[ ($cc / 0x10000) - 0x7042 ]->[ $c / 8836 ]); |
->[ ($cc / 0x10000) - 0x7042 ]->[ $c / 8836 ]); |
454 |
} |
} |
455 |
if (defined $t) { |
if (defined $t) { |
456 |
|
## Back to ISO/IEC 2022 if necessary |
457 |
$t = _i2o ($t, $C, cs_F => "\x40") |
$t = _i2o ($t, $C, cs_F => "\x40") |
458 |
if $C->{coding_system} ne $CODING_SYSTEM{"\x40"}; |
if $C->{coding_system} ne $CODING_SYSTEM{"\x40"}; |
459 |
} else { |
} else { |
460 |
|
## Output in UCS-n or UTF-n if character can't be represented in ISO/IEC 2022 |
461 |
my $F; my @F = qw~G /G /H /I B /A /D /F~; |
my $F; my @F = qw~G /G /H /I B /A /D /F~; |
462 |
push @F, qw~/J /K /L~ if $cc <= 0x10FFFF; |
push @F, qw~/J /K /L~ if $cc <= 0x10FFFF; |
463 |
push @F, qw~/@ /C /E~ if $cc <= 0xFFFF; |
push @F, qw~/@ /C /E~ if $cc <= 0xFFFF; |
471 |
} |
} |
472 |
$t = _i2o ($c, $C, cs_F => $F) if $F; |
$t = _i2o ($c, $C, cs_F => $F) if $F; |
473 |
} |
} |
474 |
if (defined $t) { |
if (defined $t) { ## Output the character itself |
475 |
$r .= $t; |
$r .= $t; |
476 |
|
} elsif ($C->{option}->{fallback_from_ucs} =~ /quiet/) { |
477 |
|
$r .= _back2ascii ($C) if $C->{option}->{fallback_from_ucs} =~ /back/; |
478 |
|
return ($r, halfway => 1, converted_length => $i, |
479 |
|
warn => $C->{option}->{fallback_from_ucs} =~ /warn/ ? 1 : 0, |
480 |
|
reason => sprintf (q(U+%04X: There is no character mapped to), $cc)); |
481 |
|
} elsif ($C->{option}->{fallback_from_ucs} eq 'croak') { |
482 |
|
return ($r, halfway => 1, die => 1, |
483 |
|
reason => sprintf (q(U+%04X: There is no character mapped to), $cc)); |
484 |
} else { |
} else { |
485 |
unless ($C->{option}->{undef_char}->[0] eq "\x20") { |
## Try to output with fallback escape sequence (if specified) |
486 |
$t = _i2g ($C->{option}->{undef_char}->[0], $C, |
my $t = Encode::Charset->fallback_escape ($C, $c); |
487 |
%{ $C->{option}->{undef_char}->[1] }); |
if (defined $t) { |
488 |
} else { ## SP |
my %D = (fallback => $C->{option}->{fallback_from_ucs}, reset => $C->{option}->{reset}); |
489 |
$t = _back2ascii ($C) . "\x20"; |
$C->{option}->{fallback_from_ucs} = 'croak'; |
490 |
|
$C->{option}->{reset_at_end} = {Gdesignation => 0, Ginvoke => 0}; |
491 |
|
eval q{$t = $C->{_encoder}->_encode_internal ($t, $C)} or undef $t; |
492 |
|
$C->{option}->{fallback_from_ucs} = $D{fallback}; |
493 |
|
$C->{option}->{reset_at_end} = $D{reset_at_end}; |
494 |
|
} |
495 |
|
if (defined $t) { |
496 |
|
$r .= $t; |
497 |
|
} else { ## Replacement character specified in charset definition |
498 |
|
unless ($C->{option}->{undef_char}->[0] eq "\x20") { ## A graphic character |
499 |
|
$t = _i2g ($C->{option}->{undef_char}->[0], $C, |
500 |
|
%{ $C->{option}->{undef_char}->[1] }); |
501 |
|
} else { ## SPACE |
502 |
|
$t = _back2ascii ($C) . "\x20"; |
503 |
|
} |
504 |
|
$r .= $C->{coding_system} eq $CODING_SYSTEM{"\x40"} ? |
505 |
|
$t : _i2o ($t, $C, cs_F => "\x40"); |
506 |
} |
} |
|
$r .= $C->{coding_system} eq $CODING_SYSTEM{"\x40"} ? |
|
|
$t : _i2o ($t, $C, cs_F => "\x40"); |
|
507 |
} |
} |
508 |
} |
} |
509 |
$r . _back2ascii ($C); |
($r . _back2ascii ($C, at => 'reset_at_end')); |
510 |
} |
} |
511 |
|
|
512 |
## $O{charset} eq undef means that charset is same as the current designated one. |
## $O{charset} eq undef means that charset is same as the current designated one. |
549 |
} |
} |
550 |
$r .= _back2ascii ($C, reset_all => $C->{C1}->{reset_all}->{$s}); |
$r .= _back2ascii ($C, reset_all => $C->{C1}->{reset_all}->{$s}); |
551 |
unless ($C->{option}->{C1invoke_to_right}) { ## ESC Fe |
unless ($C->{option}->{C1invoke_to_right}) { ## ESC Fe |
552 |
$s =~ s/([\x80-\x9F])/"\x1B" . chr (ord ($1) - 0x40)/ge; |
$s =~ s/([\x80-\x9F])/"\x1B" . pack ('C', ord ($1) - 0x40)/ge; |
553 |
} |
} |
554 |
return $r . $s; |
return $r . $s; |
555 |
} |
} |
623 |
$s =~ tr/\x00-\x7F/\x80-\xFF/ unless $left; |
$s =~ tr/\x00-\x7F/\x80-\xFF/ unless $left; |
624 |
$r . $s; |
$r . $s; |
625 |
} |
} |
626 |
sub _back2ascii (%) { |
sub _back2ascii ($;%) { |
627 |
my ($C, %O) = @_; |
my ($C, %O) = @_; |
628 |
my $r = ''; |
my $r = ''; |
629 |
if ($C->{option}->{reset}->{Gdesignation}) { |
$O{at} ||= 'reset'; |
630 |
my $F = $C->{option}->{reset}->{Gdesignation}; # \x42 |
if ($C->{option}->{$O{at}}->{Gdesignation}||$C->{option}->{reset}->{Gdesignation}) { |
631 |
|
my $F = $C->{option}->{$O{at}}->{Gdesignation} |
632 |
|
|| $C->{option}->{reset}->{Gdesignation}; # \x42 |
633 |
$r .= "\x1B\x28".$F unless $C->{G0} eq $CHARSET{G94}->{$F}; |
$r .= "\x1B\x28".$F unless $C->{G0} eq $CHARSET{G94}->{$F}; |
634 |
$C->{G0} = $CHARSET{G94}->{$F}; |
$C->{G0} = $CHARSET{G94}->{$F}; |
635 |
if ($O{reset_all}) { |
if ($O{reset_all}) { |
638 |
$C->{G3} = $CHARSET{G94}->{"\x7E"}; |
$C->{G3} = $CHARSET{G94}->{"\x7E"}; |
639 |
} |
} |
640 |
} |
} |
641 |
if ($C->{option}->{reset}->{Ginvoke}) { |
if ($C->{option}->{$O{at}}->{Ginvoke}||$C->{option}->{reset}->{Ginvoke}) { |
642 |
if ($C->{GL} ne 'G0') { |
if ($C->{GL} ne 'G0') { |
643 |
$r .= $C->{C0}->{C_LS0} || ($C->{C0} = $CHARSET{C0}->{'@'},"\x1B\x21\x40\x0F"); |
$r .= $C->{C0}->{C_LS0} || ($C->{C0} = $CHARSET{C0}->{'@'},"\x1B\x21\x40\x0F"); |
644 |
$C->{GL} = 'G0'; |
$C->{GL} = 'G0'; |
716 |
$r . $s; |
$r . $s; |
717 |
} |
} |
718 |
|
|
|
1; |
|
|
__END__ |
|
|
|
|
719 |
=head1 SEE ALSO |
=head1 SEE ALSO |
720 |
|
|
721 |
ISO/IEC 646:1991, "7-bit coded graphic character set for intormation interchange". |
ISO/IEC 646:1991, "7-bit coded graphic character set for intormation interchange". |
731 |
|
|
732 |
ISO/IEC 8859, "8-Bit Single-Byte Coded Graphic Character Sets". |
ISO/IEC 8859, "8-Bit Single-Byte Coded Graphic Character Sets". |
733 |
|
|
734 |
Encode, perlunicode |
L<Encode>, perlunicode |
735 |
|
|
736 |
=head1 TODO |
=head1 TODO |
737 |
|
|
784 |
|
|
785 |
=head1 AUTHORS |
=head1 AUTHORS |
786 |
|
|
787 |
Nanashi-san |
Nanashi-san <nanashi.san@nanashi.invalid> |
788 |
|
|
789 |
Wakaba <w@suika.fam.cx> |
Wakaba <w@suika.fam.cx> |
790 |
|
|
791 |
=head1 LICENSE |
=head1 LICENSE |
792 |
|
|
793 |
Copyright 2002 AUTHORS |
Copyright 2002 AUTHORS, all rights reserved. |
794 |
|
|
795 |
This library is free software; you can redistribute it |
This library is free software; you can redistribute it |
796 |
and/or modify it under the same terms as Perl itself. |
and/or modify it under the same terms as Perl itself. |
797 |
|
|
798 |
=cut |
=cut |
799 |
|
|
800 |
# $Date$ |
1; # $Date$ |
|
### ISO2022.pm ends here |
|