[14489] | 1 | package Encode::JP::JIS7;
|
---|
| 2 | use strict;
|
---|
| 3 |
|
---|
| 4 | our $VERSION = do { my @r = (q$Revision: 2.0 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
|
---|
| 5 |
|
---|
| 6 | use Encode qw(:fallbacks);
|
---|
| 7 |
|
---|
| 8 | for my $name ('7bit-jis', 'iso-2022-jp', 'iso-2022-jp-1'){
|
---|
| 9 | my $h2z = ($name eq '7bit-jis') ? 0 : 1;
|
---|
| 10 | my $jis0212 = ($name eq 'iso-2022-jp') ? 0 : 1;
|
---|
| 11 |
|
---|
| 12 | $Encode::Encoding{$name} =
|
---|
| 13 | bless {
|
---|
| 14 | Name => $name,
|
---|
| 15 | h2z => $h2z,
|
---|
| 16 | jis0212 => $jis0212,
|
---|
| 17 | } => __PACKAGE__;
|
---|
| 18 | }
|
---|
| 19 |
|
---|
| 20 | use base qw(Encode::Encoding);
|
---|
| 21 |
|
---|
| 22 | # we override this to 1 so PerlIO works
|
---|
| 23 | sub needs_lines { 1 }
|
---|
| 24 |
|
---|
| 25 | use Encode::CJKConstants qw(:all);
|
---|
| 26 |
|
---|
| 27 | #
|
---|
| 28 | # decode is identical for all 2022 variants
|
---|
| 29 | #
|
---|
| 30 |
|
---|
| 31 | sub decode($$;$)
|
---|
| 32 | {
|
---|
| 33 | my ($obj, $str, $chk) = @_;
|
---|
| 34 | my $residue = '';
|
---|
| 35 | if ($chk){
|
---|
| 36 | $str =~ s/([^\x00-\x7f].*)$//so and $residue = $1;
|
---|
| 37 | }
|
---|
| 38 | $residue .= jis_euc(\$str);
|
---|
| 39 | $_[1] = $residue if $chk;
|
---|
| 40 | return Encode::decode('euc-jp', $str, FB_PERLQQ);
|
---|
| 41 | }
|
---|
| 42 |
|
---|
| 43 | #
|
---|
| 44 | # encode is different
|
---|
| 45 | #
|
---|
| 46 |
|
---|
| 47 | sub encode($$;$)
|
---|
| 48 | {
|
---|
| 49 | require Encode::JP::H2Z;
|
---|
| 50 | my ($obj, $utf8, $chk) = @_;
|
---|
| 51 | # empty the input string in the stack so perlio is ok
|
---|
| 52 | $_[1] = '' if $chk;
|
---|
| 53 | my ($h2z, $jis0212) = @$obj{qw(h2z jis0212)};
|
---|
| 54 | my $octet = Encode::encode('euc-jp', $utf8, FB_PERLQQ) ;
|
---|
| 55 | $h2z and &Encode::JP::H2Z::h2z(\$octet);
|
---|
| 56 | euc_jis(\$octet, $jis0212);
|
---|
| 57 | return $octet;
|
---|
| 58 | }
|
---|
| 59 |
|
---|
| 60 | #
|
---|
| 61 | # cat_decode
|
---|
| 62 | #
|
---|
| 63 | my $re_scan_jis_g = qr{
|
---|
| 64 | \G ( ($RE{JIS_0212}) | $RE{JIS_0208} |
|
---|
| 65 | ($RE{ISO_ASC}) | ($RE{JIS_KANA}) | )
|
---|
| 66 | ([^\e]*)
|
---|
| 67 | }x;
|
---|
| 68 | sub cat_decode { # ($obj, $dst, $src, $pos, $trm, $chk)
|
---|
| 69 | my ($obj, undef, undef, $pos, $trm) = @_; # currently ignores $chk
|
---|
| 70 | my ($rdst, $rsrc, $rpos) = \@_[1,2,3];
|
---|
| 71 | local ${^ENCODING};
|
---|
| 72 | use bytes;
|
---|
| 73 | my $opos = pos($$rsrc);
|
---|
| 74 | pos($$rsrc) = $pos;
|
---|
| 75 | while ($$rsrc =~ /$re_scan_jis_g/gc) {
|
---|
| 76 | my ($esc, $esc_0212, $esc_asc, $esc_kana, $chunk) =
|
---|
| 77 | ($1, $2, $3, $4, $5);
|
---|
| 78 |
|
---|
| 79 | unless ($chunk) { $esc or last; next; }
|
---|
| 80 |
|
---|
| 81 | if ($esc && !$esc_asc) {
|
---|
| 82 | $chunk =~ tr/\x21-\x7e/\xa1-\xfe/;
|
---|
| 83 | if ($esc_kana) {
|
---|
| 84 | $chunk =~ s/([\xa1-\xdf])/\x8e$1/og;
|
---|
| 85 | } elsif ($esc_0212) {
|
---|
| 86 | $chunk =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og;
|
---|
| 87 | }
|
---|
| 88 | $chunk = Encode::decode('euc-jp', $chunk, 0);
|
---|
| 89 | }
|
---|
| 90 | elsif ((my $npos = index($chunk, $trm)) >= 0) {
|
---|
| 91 | $$rdst .= substr($chunk, 0, $npos + length($trm));
|
---|
| 92 | $$rpos += length($esc) + $npos + length($trm);
|
---|
| 93 | pos($$rsrc) = $opos;
|
---|
| 94 | return 1;
|
---|
| 95 | }
|
---|
| 96 | $$rdst .= $chunk;
|
---|
| 97 | $$rpos = pos($$rsrc);
|
---|
| 98 | }
|
---|
| 99 | $$rpos = pos($$rsrc);
|
---|
| 100 | pos($$rsrc) = $opos;
|
---|
| 101 | return '';
|
---|
| 102 | }
|
---|
| 103 |
|
---|
| 104 | # JIS<->EUC
|
---|
| 105 | my $re_scan_jis = qr{
|
---|
| 106 | (?:($RE{JIS_0212})|$RE{JIS_0208}|($RE{ISO_ASC})|($RE{JIS_KANA}))([^\e]*)
|
---|
| 107 | }x;
|
---|
| 108 |
|
---|
| 109 | sub jis_euc {
|
---|
| 110 | local ${^ENCODING};
|
---|
| 111 | my $r_str = shift;
|
---|
| 112 | $$r_str =~ s($re_scan_jis)
|
---|
| 113 | {
|
---|
| 114 | my ($esc_0212, $esc_asc, $esc_kana, $chunk) =
|
---|
| 115 | ($1, $2, $3, $4);
|
---|
| 116 | if (!$esc_asc) {
|
---|
| 117 | $chunk =~ tr/\x21-\x7e/\xa1-\xfe/;
|
---|
| 118 | if ($esc_kana) {
|
---|
| 119 | $chunk =~ s/([\xa1-\xdf])/\x8e$1/og;
|
---|
| 120 | }
|
---|
| 121 | elsif ($esc_0212) {
|
---|
| 122 | $chunk =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og;
|
---|
| 123 | }
|
---|
| 124 | }
|
---|
| 125 | $chunk;
|
---|
| 126 | }geox;
|
---|
| 127 | my ($residue) = ($$r_str =~ s/(\e.*)$//so);
|
---|
| 128 | return $residue;
|
---|
| 129 | }
|
---|
| 130 |
|
---|
| 131 | sub euc_jis{
|
---|
| 132 | no warnings qw(uninitialized);
|
---|
| 133 | my $r_str = shift;
|
---|
| 134 | my $jis0212 = shift;
|
---|
| 135 | $$r_str =~ s{
|
---|
| 136 | ((?:$RE{EUC_C})+|(?:$RE{EUC_KANA})+|(?:$RE{EUC_0212})+)
|
---|
| 137 | }{
|
---|
| 138 | my $chunk = $1;
|
---|
| 139 | my $esc =
|
---|
| 140 | ( $chunk =~ tr/\x8E//d ) ? $ESC{KANA} :
|
---|
| 141 | ( $chunk =~ tr/\x8F//d ) ? $ESC{JIS_0212} :
|
---|
| 142 | $ESC{JIS_0208};
|
---|
| 143 | if ($esc eq $ESC{JIS_0212} && !$jis0212){
|
---|
| 144 | # fallback to '?'
|
---|
| 145 | $chunk =~ tr/\xA1-\xFE/\x3F/;
|
---|
| 146 | }else{
|
---|
| 147 | $chunk =~ tr/\xA1-\xFE/\x21-\x7E/;
|
---|
| 148 | }
|
---|
| 149 | $esc . $chunk . $ESC{ASC};
|
---|
| 150 | }geox;
|
---|
| 151 | $$r_str =~
|
---|
| 152 | s/\Q$ESC{ASC}\E
|
---|
| 153 | (\Q$ESC{KANA}\E|\Q$ESC{JIS_0212}\E|\Q$ESC{JIS_0208}\E)/$1/gox;
|
---|
| 154 | $$r_str;
|
---|
| 155 | }
|
---|
| 156 |
|
---|
| 157 | 1;
|
---|
| 158 | __END__
|
---|
| 159 |
|
---|
| 160 |
|
---|
| 161 | =head1 NAME
|
---|
| 162 |
|
---|
| 163 | Encode::JP::JIS7 -- internally used by Encode::JP
|
---|
| 164 |
|
---|
| 165 | =cut
|
---|