Upgrade to Encode 0.99, from Dan Kogai.

[p5sagit/p5-mst-13.2.git] / ext / Encode / JP / JP.pm

diff --git a/ext/Encode/JP/JP.pm b/ext/Encode/JP/JP.pm
index aadf339..b67e413 100644 (file)
--- a/ext/Encode/JP/JP.pm
+++ b/ext/Encode/JP/JP.pm
@@ -5,12 +5,14 @@ BEGIN {
     }
 }
 use Encode;
-our $VERSION = '0.02';
+our $VERSION = do { my @r = (q$Revision: 0.99 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
+
 use XSLoader;
 XSLoader::load('Encode::JP',$VERSION);
 
 use Encode::JP::JIS;
-use Encode::JP::ISO_2022_JP;
+use Encode::JP::2022_JP;
+use Encode::JP::2022_JP1;
 
 1;
 __END__
@@ -20,34 +22,65 @@ Encode::JP - Japanese Encodings
 
 =head1 SYNOPSIS
 
-    use Encode 'encode';
+    use Encode qw/encode decode/; 
     $euc_jp = encode("euc-jp", $utf8);   # loads Encode::JP implicitly
-    $utf8   = encode("euc-jp", $euc_jp); # ditto
+    $utf8   = decode("euc-jp", $euc_jp); # ditto
 
 =head1 ABSTRACT
 
 This module implements Japanese charset encodings.  Encodings
 supported are as follows.
 
-  euc-jp        EUC (Extended Unix Character)
-  shiftjis      Shift JIS (aka MS Kanji)
-  7bit-jis      7bit JIS
-  iso-2022-jp   ISO-2022-JP (7bit JIS with all X201 converted to X208)
-  macjapan      Mac Japan (Shift JIS + Apple vendor mappings)
-  cp932         Code Page 932 (Shift JIS + Microsoft vendor mappings)
+  Canonical   Alias            Description
+  --------------------------------------------------------------------
+  euc-jp      /euc.*jp$/i      EUC (Extended Unix Character)
+              /jp.*euc/i   
+             /ujis$/i
+  shiftjis    /shift.*jis$/i   Shift JIS (aka MS Kanji)
+             /sjis$/i
+  7bit-jis    /^jis$/i         7bit JIS
+  iso-2022-jp                  ISO-2022-JP 
+                               (7bit JIS with all Halfwidth Kana 
+                                converted to Fullwidth)
+  iso-2022-jp-1                        ISO-2022-JP-1
+                                (ISO-2022-JP with JIS X 0212-1990
+                                support. See below)
+  macjapan      Mac Japan      (Shift JIS + Apple vendor mappings)
+  cp932         Code Page 932  (Shift JIS + MS/IBM vendor mappings)
+  --------------------------------------------------------------------
 
 =head1 DESCRIPTION
 
 To find how to use this module in detail, see L<Encode>.
 
-=head1 BUGS
+=head1 Note on ISO-2022-JP(-1)?
+
+ISO-2022-JP-1 (RFC2237) is a superset of ISO-2022-JP (RFC1468) which
+adds support for JIS X 0212-1990.  That means you can use the same
+code to decode to utf8 but not vice versa.
+
+  $utf8 = decode('iso-2022-jp-1', $stream);
+  $utf8 = decode('iso-2022-jp',   $stream);
+
+Yields the same result but
 
-JIS X0212-1990 is not supported.
+  $with_0212 = encode('iso-2022-jp-1', $utf8);
+
+is now different from
+
+  $without_0212 = encode('iso-2022-jp', $utf8 );
+
+In the latter case, characters that map to 0212 are at first converted
+to U+3013 (0xA2AE in EUC-JP; a white square also known as 'Tofu') then
+fed to decoding engine.  U+FFFD is not used to preserve text layout as
+much as possible.
+
+=head1 BUGS
 
 ASCII part (0x00-0x7f) is preserved for all encodings, even though it
 conflicts with mappings by the Unicode Consortium.  See
 
-F<http://www.debian.or.jp/~kubota/unicode-symbols.html.en>
+L<http://www.debian.or.jp/~kubota/unicode-symbols.html.en>
 
 to find why it is implemented that way.