tlperl: Perl for scripts provided by TeX Live.

git-svn-id: svn://tug.org/texlive/trunk@6046 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 79 insertions, 0 deletions

diff --git a/Master/tlpkg/tlperl/lib/Encode/KR/2022_KR.pm b/Master/tlpkg/tlperl/lib/Encode/KR/2022_KR.pm
new file mode 100644
index 00000000000..8b4052be570
--- /dev/null
+++ b/Master/tlpkg/tlperl/lib/Encode/KR/2022_KR.pm
@@ -0,0 +1,79 @@
+package Encode::KR::2022_KR;
+use strict;
+
+our $VERSION = do { my @r = (q$Revision: 2.0 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
+
+use Encode qw(:fallbacks);
+
+use base qw(Encode::Encoding);
+__PACKAGE__->Define('iso-2022-kr');
+
+sub needs_lines  { 1 }
+
+sub perlio_ok { 
+    return 0; # for the time being
+}
+
+sub decode
+{
+    my ($obj, $str, $chk) = @_;
+    my $res = $str;
+    my $residue = iso_euc(\$res);
+    # This is for PerlIO
+    $_[1] = $residue if $chk;
+    return Encode::decode('euc-kr', $res, FB_PERLQQ);
+}
+
+sub encode
+{
+    my ($obj, $utf8, $chk) = @_;
+    # empty the input string in the stack so perlio is ok
+    $_[1] = '' if $chk;
+    my $octet = Encode::encode('euc-kr', $utf8, FB_PERLQQ) ;
+    euc_iso(\$octet);
+    return $octet;
+}
+
+use Encode::CJKConstants qw(:all);
+
+# ISO<->EUC
+
+sub iso_euc{
+    my $r_str = shift;
+    $$r_str =~ s/$RE{'2022_KR'}//gox;  # remove the designator
+    $$r_str =~ s{                      # replace characters in GL
+     \x0e                              # between SO(\x0e) and SI(\x0f)
+     ([^\x0f]*)                        # with characters in GR
+     \x0f
+        }
+    {
+                        my $out= $1;
+      $out =~ tr/\x21-\x7e/\xa1-\xfe/;
+      $out;
+    }geox;
+    my ($residue) = ($$r_str =~ s/(\e.*)$//so);
+    return $residue;
+}
+
+sub euc_iso{
+    no warnings qw(uninitialized);
+    my $r_str = shift;
+    substr($$r_str,0,0)=$ESC{'2022_KR'};  # put the designator at the beg.
+    $$r_str =~ s{                         # move KS X 1001 characters in GR to GL
+        ($RE{EUC_C}+)                     # and enclose them with SO and SI
+        }{
+            my $str = $1;
+            $str =~ tr/\xA1-\xFE/\x21-\x7E/;
+            "\x0e" . $str . "\x0f";
+        }geox;
+    $$r_str;
+}
+
+1;
+__END__
+
+=head1 NAME
+
+Encode::KR::2022_KR -- internally used by Encode::KR
+
+=cut