/usr/lib/perl5/Encode/JP/JIS7.pm is in libencode-perl 2.57-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | package Encode::JP::JIS7;
use strict;
use warnings;
our $VERSION = do { my @r = ( q$Revision: 2.5 $ =~ /\d+/g ); sprintf "%d." . "%02d" x $#r, @r };
use Encode qw(:fallbacks);
for my $name ( '7bit-jis', 'iso-2022-jp', 'iso-2022-jp-1' ) {
my $h2z = ( $name eq '7bit-jis' ) ? 0 : 1;
my $jis0212 = ( $name eq 'iso-2022-jp' ) ? 0 : 1;
$Encode::Encoding{$name} = bless {
Name => $name,
h2z => $h2z,
jis0212 => $jis0212,
} => __PACKAGE__;
}
use parent qw(Encode::Encoding);
# we override this to 1 so PerlIO works
sub needs_lines { 1 }
use Encode::CJKConstants qw(:all);
#
# decode is identical for all 2022 variants
#
sub decode($$;$) {
my ( $obj, $str, $chk ) = @_;
my $residue = '';
if ($chk) {
$str =~ s/([^\x00-\x7f].*)$//so and $residue = $1;
}
$residue .= jis_euc( \$str );
$_[1] = $residue if $chk;
return Encode::decode( 'euc-jp', $str, FB_PERLQQ );
}
#
# encode is different
#
sub encode($$;$) {
require Encode::JP::H2Z;
my ( $obj, $utf8, $chk ) = @_;
# empty the input string in the stack so perlio is ok
$_[1] = '' if $chk;
my ( $h2z, $jis0212 ) = @$obj{qw(h2z jis0212)};
my $octet = Encode::encode( 'euc-jp', $utf8, $chk );
$h2z and &Encode::JP::H2Z::h2z( \$octet );
euc_jis( \$octet, $jis0212 );
return $octet;
}
#
# cat_decode
#
my $re_scan_jis_g = qr{
\G ( ($RE{JIS_0212}) | $RE{JIS_0208} |
($RE{ISO_ASC}) | ($RE{JIS_KANA}) | )
([^\e]*)
}x;
sub cat_decode { # ($obj, $dst, $src, $pos, $trm, $chk)
my ( $obj, undef, undef, $pos, $trm ) = @_; # currently ignores $chk
my ( $rdst, $rsrc, $rpos ) = \@_[ 1, 2, 3 ];
local ${^ENCODING};
use bytes;
my $opos = pos($$rsrc);
pos($$rsrc) = $pos;
while ( $$rsrc =~ /$re_scan_jis_g/gc ) {
my ( $esc, $esc_0212, $esc_asc, $esc_kana, $chunk ) =
( $1, $2, $3, $4, $5 );
unless ($chunk) { $esc or last; next; }
if ( $esc && !$esc_asc ) {
$chunk =~ tr/\x21-\x7e/\xa1-\xfe/;
if ($esc_kana) {
$chunk =~ s/([\xa1-\xdf])/\x8e$1/og;
}
elsif ($esc_0212) {
$chunk =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og;
}
$chunk = Encode::decode( 'euc-jp', $chunk, 0 );
}
elsif ( ( my $npos = index( $chunk, $trm ) ) >= 0 ) {
$$rdst .= substr( $chunk, 0, $npos + length($trm) );
$$rpos += length($esc) + $npos + length($trm);
pos($$rsrc) = $opos;
return 1;
}
$$rdst .= $chunk;
$$rpos = pos($$rsrc);
}
$$rpos = pos($$rsrc);
pos($$rsrc) = $opos;
return '';
}
# JIS<->EUC
my $re_scan_jis = qr{
(?:($RE{JIS_0212})|$RE{JIS_0208}|($RE{ISO_ASC})|($RE{JIS_KANA}))([^\e]*)
}x;
sub jis_euc {
local ${^ENCODING};
my $r_str = shift;
$$r_str =~ s($re_scan_jis)
{
my ($esc_0212, $esc_asc, $esc_kana, $chunk) =
($1, $2, $3, $4);
if (!$esc_asc) {
$chunk =~ tr/\x21-\x7e/\xa1-\xfe/;
if ($esc_kana) {
$chunk =~ s/([\xa1-\xdf])/\x8e$1/og;
}
elsif ($esc_0212) {
$chunk =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og;
}
}
$chunk;
}geox;
my ($residue) = ( $$r_str =~ s/(\e.*)$//so );
return $residue;
}
sub euc_jis {
no warnings qw(uninitialized);
local ${^ENCODING};
my $r_str = shift;
my $jis0212 = shift;
$$r_str =~ s{
((?:$RE{EUC_C})+|(?:$RE{EUC_KANA})+|(?:$RE{EUC_0212})+)
}{
my $chunk = $1;
my $esc =
( $chunk =~ tr/\x8E//d ) ? $ESC{KANA} :
( $chunk =~ tr/\x8F//d ) ? $ESC{JIS_0212} :
$ESC{JIS_0208};
if ($esc eq $ESC{JIS_0212} && !$jis0212){
# fallback to '?'
$chunk =~ tr/\xA1-\xFE/\x3F/;
}else{
$chunk =~ tr/\xA1-\xFE/\x21-\x7E/;
}
$esc . $chunk . $ESC{ASC};
}geox;
$$r_str =~ s/\Q$ESC{ASC}\E
(\Q$ESC{KANA}\E|\Q$ESC{JIS_0212}\E|\Q$ESC{JIS_0208}\E)/$1/gox;
$$r_str;
}
1;
__END__
=head1 NAME
Encode::JP::JIS7 -- internally used by Encode::JP
=cut
|