| Commit | Line | Data |
|---|
| aae85ceb |
1 | package Encode::JP::JIS7; |
| 2 | use strict; |
| 3 | |
| 4 | our $VERSION = do { my @r = (q$Revision: 1.1 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r }; |
| 5 | |
| 6 | require Encode; |
| 7 | for my $name ('7bit-jis', 'iso-2022-jp', 'iso-2022-jp-1'){ |
| 8 | my $h2z = ($name eq '7bit-jis') ? 0 : 1; |
| 9 | my $jis0212 = ($name eq 'iso-2022-jp') ? 0 : 1; |
| 10 | |
| 11 | $Encode::Encoding{$name} = |
| 12 | bless { |
| 13 | Name => $name, |
| 14 | h2z => $h2z, |
| 15 | jis0212 => $jis0212, |
| 16 | } => __PACKAGE__; |
| 17 | } |
| 18 | |
| 19 | sub name { shift->{'Name'} } |
| 20 | sub new_sequence { $_[0] }; |
| 21 | |
| 22 | use Encode::CJKConstants qw(:all); |
| 23 | |
| 24 | # |
| 25 | # decode is identical for all 2022 variants |
| 26 | # |
| 27 | |
| 28 | sub decode |
| 29 | { |
| 30 | my ($obj,$str,$chk) = @_; |
| 31 | jis_euc(\$str); |
| 32 | return Encode::decode('euc-jp', $str, $chk); |
| 33 | } |
| 34 | |
| 35 | # |
| 36 | # encode is different |
| 37 | # |
| 38 | |
| 39 | sub encode |
| 40 | { |
| 41 | require Encode::JP::H2Z; |
| 42 | my ($obj,$str,$chk) = @_; |
| 43 | my ($h2z, $jis0212) = @$obj{qw(h2z jis0212)}; |
| 44 | my $result = Encode::encode('euc-jp', $str, $chk); |
| 45 | $h2z and &Encode::JP::H2Z::h2z(\$result); |
| 46 | euc_jis(\$result, $jis0212); |
| 47 | return $result; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | # JIS<->EUC |
| 52 | |
| 53 | sub jis_euc { |
| 54 | my $r_str = shift; |
| 55 | $$r_str =~ s( |
| 56 | ($RE{JIS_0212}|$RE{JIS_0208}|$RE{ISO_ASC}|$RE{JIS_KANA}) |
| 57 | ([^\e]*) |
| 58 | ) |
| 59 | { |
| 60 | my ($esc, $str) = ($1, $2); |
| 61 | if ($esc !~ /$RE{ISO_ASC}/o) { |
| 62 | $str =~ tr/\x21-\x7e/\xa1-\xfe/; |
| 63 | if ($esc =~ /$RE{JIS_KANA}/o) { |
| 64 | $str =~ s/([\xa1-\xdf])/\x8e$1/og; |
| 65 | } |
| 66 | elsif ($esc =~ /$RE{JIS_0212}/o) { |
| 67 | $str =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og; |
| 68 | } |
| 69 | } |
| 70 | $str; |
| 71 | }geox; |
| 72 | $$r_str; |
| 73 | } |
| 74 | |
| 75 | sub euc_jis{ |
| 76 | my $r_str = shift; |
| 77 | my $jis0212 = shift; |
| 78 | $$r_str =~ s{ |
| 79 | ((?:$RE{EUC_C})+|(?:$RE{EUC_KANA})+|(?:$RE{EUC_0212})+) |
| 80 | }{ |
| 81 | my $str = $1; |
| 82 | my $esc = |
| 83 | ( $str =~ tr/\x8E//d ) ? $ESC{KANA} : |
| 84 | ( $str =~ tr/\x8F//d ) ? $ESC{JIS_0212} : |
| 85 | $ESC{JIS_0208}; |
| 86 | if ($esc eq $ESC{JIS_0212} && !$jis0212){ |
| 87 | # fallback to '?' |
| 88 | $str =~ tr/\xA1-\xFE/\x3F/; |
| 89 | }else{ |
| 90 | $str =~ tr/\xA1-\xFE/\x21-\x7E/; |
| 91 | } |
| 92 | $esc . $str . $ESC{ASC}; |
| 93 | }geox; |
| 94 | $$r_str =~ |
| 95 | s/\Q$ESC{ASC}\E |
| 96 | (\Q$ESC{KANA}\E|\Q$ESC{JIS_0212}\E|\Q$ESC{JIS_0208}\E)/$1/gox; |
| 97 | $$r_str; |
| 98 | } |
| 99 | |
| 100 | 1; |
| 101 | __END__ |
| 102 | |
| 103 | |
| 104 | =head1 NAME |
| 105 | |
| 106 | Encode::JP::JIS7 -- internally used by Encode::JP |
| 107 | |
| 108 | =cut |
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