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=head1 NAME |
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|
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Encode::SJIS --- Shift JIS coding systems encoder and decoder |
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|
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=head1 ENCODINGS |
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|
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This module defines only two basic version of shift JIS. |
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Other variants are defined in Encode::SJIS::* modules. |
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|
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=over 4 |
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|
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=cut |
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|
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package Encode::SJIS; |
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use 5.7.3; |
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use strict; |
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our $VERSION=do{my @r=(q$Revision: 1.1 $=~/\d+/g);sprintf "%d."."%02d" x $#r,@r}; |
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require Encode::Charset; |
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use base qw(Encode::Encoding); |
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|
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### --- Perl Encode module common functions |
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|
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sub encode ($$;$) { |
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my ($obj, $str, $chk) = @_; |
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$_[1] = '' if $chk; |
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if (!defined $obj->{_encode_mapping} || $obj->{_encode_mapping}) { |
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require Encode::Table; |
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$str = Encode::Table::convert ($str, $obj->__encode_map, |
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-autoload => defined $obj->{_encode_mapping_autoload} ? |
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$obj->{_encode_mapping_autoload} : 1); |
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} |
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$str = &internal_to_sjis ($str, $obj->__2022_encode); |
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$str; |
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} |
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|
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sub decode ($$;$) { |
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my ($obj, $str, $chk) = @_; |
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$_[1] = '' if $chk; |
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$str = &sjis_to_internal ($str, $obj->__2022_decode); |
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if (!defined $obj->{_decode_mapping} || $obj->{_decode_mapping}) { |
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require Encode::Table; |
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$str = Encode::Table::convert ($str, $obj->__decode_map, |
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-autoload => defined $obj->{_decode_mapping_autoload} ? |
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$obj->{_decode_mapping_autoload} : 1); |
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} |
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$str; |
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} |
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|
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### --- Encode::SJIS unique functions |
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*new_object = \&Encode::Charset::new_object_sjis; |
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|
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sub sjis_to_internal ($$) { |
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my ($s, $C) = @_; |
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$C ||= &new_object; |
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$s =~ s{ |
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([\x00-\x7F\xA1-\xDF]) |
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# ([\xA1-\xDF]) |
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|([\x81-\x9F\xE0-\xFC][\x40-\x7E\x80-\xFC]) |
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|\x1B([\x40-\x5F]) |
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|([\x80-\xFF]) ## Broken or supplemental 1-byte character |
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}{ |
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my ($c7, $c2, $c1, $c8) = ($1, $2, $3, $4); |
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if (defined $c7) { |
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if ($c7 =~ /([\x21-\x7E])/) { |
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chr ($C->{ $C->{GL} }->{ucs} + ord ($1) - 0x21); |
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} elsif ($c7 =~ /([\x00-\x1F])/) { |
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chr ($C->{ $C->{CL} }->{ucs} + ord ($1)); |
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} elsif ($C->{GR} && $c7 =~ /([\xA1-\xDF])/) { |
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chr ($C->{ $C->{GR} }->{ucs} + ord ($1) - 0xA1); |
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} else { ## 0x20, 0x7F |
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$C->{Gsmap}->{ $c7 } || $c7; |
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} |
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} elsif ($c2) { |
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if ($c2 =~ /([\x81-\xEF])(.)/) { |
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my ($f, $s) = (ord $1, ord $2); |
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$f -= $f < 0xA0 ? 0x81 : 0xC1; $s -= 0x40 + ($s > 0x7F); |
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chr ($C->{G1}->{ucs} + $f * 188 + $s); |
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} else { ## [\xF0-\xFC]. |
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my ($f, $s) = unpack ('CC', $c2); |
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if ($C->{G3}->{Csjis_kuE}) { |
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$f = $s > 0x9E ? $C->{G3}->{Csjis_kuE}->{ $f }: |
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$C->{G3}->{Csjis_kuO}->{ $f }; |
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$s -= ($s > 0x9E ? 0x9F : $s > 0x7F ? 0x41 : 0x40); |
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chr ($C->{G3}->{ucs} + $f * 94 + $s); |
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} else { |
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$f -= 0xF0; $s -= 0x40 + ($s > 0x7F); |
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chr ($C->{G3}->{ucs} + $f * 188 + $s); |
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} |
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} |
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} elsif ($c1) { ## ESC Fe |
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chr ($C->{ $C->{ESC_Fe} }->{ucs} + ord ($c1) - 0x40); |
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} else { # $C8 |
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$C->{Gsmap}->{ $c8 } || $c8; |
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} |
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}gex; |
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$s; |
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} |
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|
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sub internal_to_sjis ($\%) { |
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use integer; |
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my ($s, $C) = @_; |
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$C ||= &new_object; |
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|
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my $r = ''; |
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for my $c (split //, $s) { |
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my $cc = ord $c; |
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my $t; |
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if ($cc <= 0x1F) { |
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$t = $c if $C->{ $C->{CL} } eq $Encode::Charset::CHARSET{C0}->{"\x40"}; |
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} elsif ($cc == 0x20 || $cc == 0x7F) { |
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$t = $c; |
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} elsif ($cc < 0x7F) { |
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$t = $c if $C->{ $C->{GL} } eq $Encode::Charset::CHARSET{G94}->{"\x42"}; |
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} elsif ($C->{option}->{C1invoke_to_right} && $cc == 0x80) { |
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$t = $c if $C->{ $C->{CR} } eq $Encode::Charset::CHARSET{C1}->{'64291991C1'}; |
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} elsif ($cc <= 0x9F) { |
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$t = "\x1B".chr ($cc - 0x40) |
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if $C->{ $C->{ESC_Fe} } eq $Encode::Charset::CHARSET{C1}->{'64291991C1'}; |
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|
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} elsif (0xE9F6C0 <= $cc && $cc <= 0xF06F80) { |
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my $c = $cc - 0xE9F6C0; my $F = chr (($c / 8836)+0x30); |
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if ($C->{G1} eq $Encode::Charset::CHARSET{G94n}->{ $F }) { |
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my ($c1, $c2) = ((($c % 8836) / 94)+0x21, ($c % 94)+0x21); |
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$t = pack ('CC', (($c1 - 1) >> 1) + ($c1 < 0x5F ? 0x71 : 0xB1), |
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$c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E)); |
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} elsif ($C->{G3} eq $Encode::Charset::CHARSET{G94n}->{ $F }) { |
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my ($c1, $c2) = ((($c % 8836) / 94)+0x21, ($c % 94)+0x21); |
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if ($C->{G3}->{Csjis_first}) { |
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$t = pack ('CC', $C->{G3}->{Csjis_first}->{ ($c % 8836) / 94 }, |
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$c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E)); |
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} else { |
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$t = pack ('CC', ($c / 188) + 0xF0, |
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$c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E)) |
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if ($c / 188) + 0xF0 < 0xFD; |
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} |
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} |
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} elsif (0xF49D7C <= $cc && $cc <= 0xF4BFFF) { |
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my $c = $cc - 0xF49D7C; |
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if ($C->{G1} eq $Encode::Charset::CHARSET{G94n}->{'B@'}) { |
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my ($c1, $c2) = ((($c % 8836) / 94)+0x21, ($c % 94)+0x21); |
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$t = pack ('CC', (($c1 - 1) >> 1) + ($c1 < 0x5F ? 0x71 : 0xB1), |
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$c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E)); |
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} |
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|
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} elsif (0xE90940 <= $cc && $cc <= 0xE92641) { |
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my $c = $cc - 0xE90940; my $F = chr (($c / 94)+0x30); |
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if ($C->{ $C->{GL} } eq $Encode::Charset::CHARSET{G94}->{ $F }) { |
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$t = chr (($c % 94) + 0x21); |
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} elsif ($C->{ $C->{GR} } eq $Encode::Charset::CHARSET{G94}->{ $F }) { |
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$t = chr (($c % 94) + 0xA1) if ($c % 94) < 0x3F; |
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} |
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} elsif (0x70420000 <= $cc && $cc <= 0x7046F19B) { |
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my $c = $cc % 0x10000; |
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my $F0=$C->{option}->{private_set}->{G94n}->[($cc/0x10000)-0x7042]->[$c/8836]; |
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my $F1 = 'P'.(($cc / 0x10000) - 0x7042).'_'.($c / 8836); |
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if ($C->{G3} eq $Encode::Charset::CHARSET{G94n}->{ $F0 } |
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|| $C->{G3} eq $Encode::Charset::CHARSET{G94n}->{ $F1 }) { |
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my ($c1, $c2) = ((($c % 8836) / 94)+0x21, ($c % 94)+0x21); |
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if ($C->{G3}->{Csjis_first}) { |
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$t = pack ('CC', $C->{G3}->{Csjis_first}->{ ($c % 8836) / 94 }, |
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$c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E)); |
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} else { |
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$t = pack ('CC', ($c / 188) + 0xF0, |
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$c2 + (($c1 & 1) ? ($c2 < 0x60 ? 0x1F : 0x20) : 0x7E)) |
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if ($c / 188) + 0xF0 < 0xFD; |
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} |
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} |
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} |
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|
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if (defined $t) { |
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$r .= $t; |
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} elsif ($C->{GsmapR}->{ $c }) { |
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$r .= $C->{GsmapR}->{ $c }; |
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} else { |
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$r .= $C->{option}->{undef_char_sjis} || "\x3F"; |
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} |
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} |
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$r; |
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} |
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|
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sub __clone ($) { |
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my $self = shift; |
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bless {%$self}, ref $self; |
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}; |
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|
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__PACKAGE__->Define (qw!shift_jisx0213 japanese-shift-jisx0213 |
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shift-jisx0213 x-shift_jisx0213 shift-jis-3 shift-jis-2000 |
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sjis shift-jis x-sjis x_sjis x-sjis-jp shiftjis x-shiftjis |
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x-shift-jis shift.jis!); |
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|
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=item sjis |
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"Shift JIS" coding system. (Alias: shift-jis, shiftjis, |
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shift.jis, x-shiftjis, x-shift-jis, x-sjis, x_sjis, |
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x-sjis-jp) |
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Since this name is ambiguous (it can now refer all or any |
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of shift JIS coding system family), this name should not |
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be used to address specific coding system. In this module, |
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this is considered as an alias name to the shift JIS with |
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latest official definition, currently of JIS X 0213:2000 |
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Appendix 1 (with implemention level 4). |
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|
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Note that the name "Shift_JIS" is not associated with |
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this name, because IANA registry [IANAREG] assignes |
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it to a shift JIS defined by JIS X 0208:1997. |
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|
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=item shift_jisx0213 |
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|
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Shift_JISX0213 coded representation, defined by |
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JIS X 0213:2000 Appendix 1 (implemention level 4). |
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(Alias: shift-jisx0213, x-shift_jisx0213, japanese-shift-jisx0213 (emacsen), |
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shift-jis-3 (Yudit), shift-jis-2000) |
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|
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=cut |
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|
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sub __2022__common ($) { |
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my $C = Encode::SJIS->new_object; |
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$C->{G0} = $Encode::Charset::CHARSET{G94}->{J}; ## JIS X 0201:1997 Latin |
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$C->{G1} = $Encode::Charset::CHARSET{G94n}->{"\x4F"}; ## JIS X 0213:2000 plane 1 |
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$C->{G2} = $Encode::Charset::CHARSET{G94}->{I}; ## JIS X 0201:1997 Katakana |
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$C->{G3} = $Encode::Charset::CHARSET{G94n}->{"\x50"}; ## JIS X 0213:2000 plane 2 |
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$C; |
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} |
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sub __2022_encode ($) { |
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my $C = shift->__2022__common; |
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$C; |
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} |
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sub __2022_decode ($) { |
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my $C = shift->__2022__common; |
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$C; |
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} |
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sub __encode_map ($) { |
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[qw/ucs_to_jisx0201_latin ucs_to_jisx0213_2000_1 ucs_to_jisx0213_2000_2 ucs_to_jisx0201_katakana/]; |
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} |
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sub __decode_map ($) { |
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[qw/jisx0201_latin_to_ucs jisx0213_2000_1_to_ucs jisx0213_2000_2_to_ucs jisx0201_katakana_to_ucs/]; |
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} |
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|
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package Encode::SJIS::X0213ASCII; |
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use vars qw/@ISA/; |
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push @ISA, 'Encode::SJIS'; |
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__PACKAGE__->Define (qw/shift_jisx0213-ascii shift-jis-2000-ascii |
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sjis-ascii shift-jis-ascii/); |
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|
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=item sjis-ascii |
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Same as sjis but ASCII (ISO/IEC 646 IRV) instead of |
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JIS X 0201 Roman (or Latin) set. (Alias: shift-jis-ascii) |
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|
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In spite of the history of shift JIS, ASCII is sometimes |
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used instead of JIS X 0201 Roman set, because of compatibility |
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with ASCII world. |
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|
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Note that this name is now an alias of shift_jisx0213-ascii, |
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as sjis is of shift_jisx0213. |
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|
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=item shift_jisx0213-ascii |
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|
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Same as Shift_JISX0213 but ASCII (ISO/IEC 646 IRV) |
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instead of JIS X 0201:1997 Latin character set. |
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(Alias: shift-jis-2000-ascii) |
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|
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Note that this coding system does NOT comform to |
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JIS X 0213:2000 Appendix 1. |
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|
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=cut |
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|
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sub __2022__common ($) { |
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my $C = shift->SUPER::__2022__common; |
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$C->{G0} = $Encode::Charset::CHARSET{G94}->{B}; ## ASCII |
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$C; |
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} |
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sub __encode_map ($) { |
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[qw/ucs_to_ascii ucs_to_jisx0213_2000_1 ucs_to_jisx0213_2000_2 ucs_to_jisx0201_katakana/]; |
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} |
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sub __decode_map ($) { |
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[qw/jisx0213_2000_1_to_ucs jisx0213_2000_2_to_ucs jisx0201_katakana_to_ucs/]; |
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} |
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|
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1; |
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__END__ |
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|
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=back |
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|
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=head1 SEE ALSO |
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|
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JIS X 0208:1997, "7-bit and 8-bit double byte coded Kanji |
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set for information interchange", Japan Industrial Standards |
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Committee (JISC) <http://www.jisc.go.jp/>, 1997. |
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|
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JIS X 0213:2000, "7-bit and 8-bit double byte coded extended Kanji |
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sets for information interchange", Japan Industrial Standards |
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Committee (JISC) <http://www.jisc.go.jp/>, 2000. |
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|
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Encode, perlunicode |
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|
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[IANAREG] "CHARACTER SETS", IANA <http://www.iana.org/>, |
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<http://www.iana.org/assignments/character-sets>. |
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The charset registry for IETF <http://www.ietf.org/> standards. |
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(Note that in this registry two shift JISes are registered, |
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"Shift_JIS" and "Windows-31j". Former is JIS X 0208:1997's |
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definition and later is the Windows standard character set.) |
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|
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=head1 LICENSE |
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|
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Copyright 2002 Nanashi-san |
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|
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This library is free software; you can redistribute it |
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and/or modify it under the same terms as Perl itself. |
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|
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=cut |
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|
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# $Date: 2002/10/12 07:27:01 $ |
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### SJIS.pm ends here |
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