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-rw-r--r--Master/tlpkg/tlperl/lib/Encode/JP/JIS7.pm165
1 files changed, 165 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/Encode/JP/JIS7.pm b/Master/tlpkg/tlperl/lib/Encode/JP/JIS7.pm
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+package Encode::JP::JIS7;
+use strict;
+use warnings;
+our $VERSION = do { my @r = ( q$Revision: 2.4 $ =~ /\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 base 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