lib/perl5/5.8.8/msys/Encode/JP.pm

   1 package Encode::JP;
   2 BEGIN {
   3     if (ord("A") == 193) {
   4         die "Encode::JP not supported on EBCDIC\n";
   5     }
   6 }
   7 use Encode;
   8 our $VERSION = do { my @r = (q$Revision: 2.1 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
   9
  10 use XSLoader;
  11 XSLoader::load(__PACKAGE__,$VERSION);
  12
  13 use Encode::JP::JIS7;
  14
  15 1;
  16 __END__
  17
  18 =head1 NAME
  19
  20 Encode::JP - Japanese Encodings
  21
  22 =head1 SYNOPSIS
  23
  24     use Encode qw/encode decode/;
  25     $euc_jp = encode("euc-jp", $utf8);   # loads Encode::JP implicitly
  26     $utf8   = decode("euc-jp", $euc_jp); # ditto
  27
  28 =head1 ABSTRACT
  29
  30 This module implements Japanese charset encodings.  Encodings
  31 supported are as follows.
  32
  33   Canonical   Alias             Description
  34   --------------------------------------------------------------------
  35   euc-jp      /\beuc.*jp$/i     EUC (Extended Unix Character)
  36               /\bjp.*euc/i
  37               /\bujis$/i
  38   shiftjis    /\bshift.*jis$/i  Shift JIS (aka MS Kanji)
  39               /\bsjis$/i
  40   7bit-jis    /\bjis$/i         7bit JIS
  41   iso-2022-jp                   ISO-2022-JP                  [RFC1468]
  42                                 = 7bit JIS with all Halfwidth Kana
  43                                   converted to Fullwidth
  44   iso-2022-jp-1                 ISO-2022-JP-1                [RFC2237]
  45                                 = ISO-2022-JP with JIS X 0212-1990
  46                                   support.  See below
  47   MacJapanese                   Shift JIS + Apple vendor mappings
  48   cp932       /\bwindows-31j$/i Code Page 932
  49                                 = Shift JIS + MS/IBM vendor mappings
  50   jis0201-raw                   JIS0201, raw format
  51   jis0208-raw                   JIS0201, raw format
  52   jis0212-raw                   JIS0201, raw format
  53   --------------------------------------------------------------------
  54
  55 =head1 DESCRIPTION
  56
  57 To find out how to use this module in detail, see L<Encode>.
  58
  59 =head1 Note on ISO-2022-JP(-1)?
  60
  61 ISO-2022-JP-1 (RFC2237) is a superset of ISO-2022-JP (RFC1468) which
  62 adds support for JIS X 0212-1990.  That means you can use the same
  63 code to decode to utf8 but not vice versa.
  64
  65   $utf8 = decode('iso-2022-jp-1', $stream);
  66
  67 and
  68
  69   $utf8 = decode('iso-2022-jp',   $stream);
  70
  71 yield the same result but
  72
  73   $with_0212 = encode('iso-2022-jp-1', $utf8);
  74
  75 is now different from
  76
  77   $without_0212 = encode('iso-2022-jp', $utf8 );
  78
  79 In the latter case, characters that map to 0212 are first converted
  80 to U+3013 (0xA2AE in EUC-JP; a white square also known as 'Tofu' or
  81 'geta mark') then fed to the decoding engine.  U+FFFD is not used,
  82 in order to preserve text layout as much as possible.
  83
  84 =head1 BUGS
  85
  86 The ASCII region (0x00-0x7f) is preserved for all encodings, even
  87 though this conflicts with mappings by the Unicode Consortium.  See
  88
  89 L<http://www.debian.or.jp/~kubota/unicode-symbols.html.en>
  90
  91 to find out why it is implemented that way.
  92
  93 =head1 SEE ALSO
  94
  95 L<Encode>
  96
  97 =cut