1N/Apackage Encode::JP::JIS7;
1N/Ause strict;
1N/A
1N/Aour $VERSION = do { my @r = (q$Revision: 1.12 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
1N/A
1N/Ause Encode qw(:fallbacks);
1N/A
1N/Afor my $name ('7bit-jis', 'iso-2022-jp', 'iso-2022-jp-1'){
1N/A my $h2z = ($name eq '7bit-jis') ? 0 : 1;
1N/A my $jis0212 = ($name eq 'iso-2022-jp') ? 0 : 1;
1N/A
1N/A $Encode::Encoding{$name} =
1N/A bless {
1N/A Name => $name,
1N/A h2z => $h2z,
1N/A jis0212 => $jis0212,
1N/A } => __PACKAGE__;
1N/A}
1N/A
1N/Ause base qw(Encode::Encoding);
1N/A
1N/A# we override this to 1 so PerlIO works
1N/Asub needs_lines { 1 }
1N/A
1N/Ause Encode::CJKConstants qw(:all);
1N/A
1N/A#
1N/A# decode is identical for all 2022 variants
1N/A#
1N/A
1N/Asub decode($$;$)
1N/A{
1N/A my ($obj, $str, $chk) = @_;
1N/A my $residue = '';
1N/A if ($chk){
1N/A $str =~ s/([^\x00-\x7f].*)$//so and $residue = $1;
1N/A }
1N/A $residue .= jis_euc(\$str);
1N/A $_[1] = $residue if $chk;
1N/A return Encode::decode('euc-jp', $str, FB_PERLQQ);
1N/A}
1N/A
1N/A#
1N/A# encode is different
1N/A#
1N/A
1N/Asub encode($$;$)
1N/A{
1N/A require Encode::JP::H2Z;
1N/A my ($obj, $utf8, $chk) = @_;
1N/A # empty the input string in the stack so perlio is ok
1N/A $_[1] = '' if $chk;
1N/A my ($h2z, $jis0212) = @$obj{qw(h2z jis0212)};
1N/A my $octet = Encode::encode('euc-jp', $utf8, FB_PERLQQ) ;
1N/A $h2z and &Encode::JP::H2Z::h2z(\$octet);
1N/A euc_jis(\$octet, $jis0212);
1N/A return $octet;
1N/A}
1N/A
1N/A#
1N/A# cat_decode
1N/A#
1N/Amy $re_scan_jis_g = qr{
1N/A \G ( ($RE{JIS_0212}) | $RE{JIS_0208} |
1N/A ($RE{ISO_ASC}) | ($RE{JIS_KANA}) | )
1N/A ([^\e]*)
1N/A}x;
1N/Asub cat_decode { # ($obj, $dst, $src, $pos, $trm, $chk)
1N/A my ($obj, undef, undef, $pos, $trm) = @_; # currently ignores $chk
1N/A my ($rdst, $rsrc, $rpos) = \@_[1,2,3];
1N/A local ${^ENCODING};
1N/A use bytes;
1N/A my $opos = pos($$rsrc);
1N/A pos($$rsrc) = $pos;
1N/A while ($$rsrc =~ /$re_scan_jis_g/gc) {
1N/A my ($esc, $esc_0212, $esc_asc, $esc_kana, $chunk) =
1N/A ($1, $2, $3, $4, $5);
1N/A
1N/A unless ($chunk) { $esc or last; next; }
1N/A
1N/A if ($esc && !$esc_asc) {
1N/A $chunk =~ tr/\x21-\x7e/\xa1-\xfe/;
1N/A if ($esc_kana) {
1N/A $chunk =~ s/([\xa1-\xdf])/\x8e$1/og;
1N/A } elsif ($esc_0212) {
1N/A $chunk =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og;
1N/A }
1N/A $chunk = Encode::decode('euc-jp', $chunk, 0);
1N/A }
1N/A elsif ((my $npos = index($chunk, $trm)) >= 0) {
1N/A $$rdst .= substr($chunk, 0, $npos + length($trm));
1N/A $$rpos += length($esc) + $npos + length($trm);
1N/A pos($$rsrc) = $opos;
1N/A return 1;
1N/A }
1N/A $$rdst .= $chunk;
1N/A $$rpos = pos($$rsrc);
1N/A }
1N/A $$rpos = pos($$rsrc);
1N/A pos($$rsrc) = $opos;
1N/A return '';
1N/A}
1N/A
1N/A# JIS<->EUC
1N/Amy $re_scan_jis = qr{
1N/A (?:($RE{JIS_0212})|$RE{JIS_0208}|($RE{ISO_ASC})|($RE{JIS_KANA}))([^\e]*)
1N/A}x;
1N/A
1N/Asub jis_euc {
1N/A local ${^ENCODING};
1N/A my $r_str = shift;
1N/A $$r_str =~ s($re_scan_jis)
1N/A {
1N/A my ($esc_0212, $esc_asc, $esc_kana, $chunk) =
1N/A ($1, $2, $3, $4);
1N/A if (!$esc_asc) {
1N/A $chunk =~ tr/\x21-\x7e/\xa1-\xfe/;
1N/A if ($esc_kana) {
1N/A $chunk =~ s/([\xa1-\xdf])/\x8e$1/og;
1N/A }
1N/A elsif ($esc_0212) {
1N/A $chunk =~ s/([\xa1-\xfe][\xa1-\xfe])/\x8f$1/og;
1N/A }
1N/A }
1N/A $chunk;
1N/A }geox;
1N/A my ($residue) = ($$r_str =~ s/(\e.*)$//so);
1N/A return $residue;
1N/A}
1N/A
1N/Asub euc_jis{
1N/A no warnings qw(uninitialized);
1N/A my $r_str = shift;
1N/A my $jis0212 = shift;
1N/A $$r_str =~ s{
1N/A ((?:$RE{EUC_C})+|(?:$RE{EUC_KANA})+|(?:$RE{EUC_0212})+)
1N/A }{
1N/A my $chunk = $1;
1N/A my $esc =
1N/A ( $chunk =~ tr/\x8E//d ) ? $ESC{KANA} :
1N/A ( $chunk =~ tr/\x8F//d ) ? $ESC{JIS_0212} :
1N/A $ESC{JIS_0208};
1N/A if ($esc eq $ESC{JIS_0212} && !$jis0212){
1N/A # fallback to '?'
1N/A $chunk =~ tr/\xA1-\xFE/\x3F/;
1N/A }else{
1N/A $chunk =~ tr/\xA1-\xFE/\x21-\x7E/;
1N/A }
1N/A $esc . $chunk . $ESC{ASC};
1N/A }geox;
1N/A $$r_str =~
1N/A s/\Q$ESC{ASC}\E
1N/A (\Q$ESC{KANA}\E|\Q$ESC{JIS_0212}\E|\Q$ESC{JIS_0208}\E)/$1/gox;
1N/A $$r_str;
1N/A}
1N/A
1N/A1;
1N/A__END__
1N/A
1N/A
1N/A=head1 NAME
1N/A
1N/AEncode::JP::JIS7 -- internally used by Encode::JP
1N/A
1N/A=cut