NAME

Encode::JP - Japanese Encodings

SYNOPSIS

use Encode qw/encode decode/; 
$euc_jp = encode("euc-jp", $utf8);   # loads Encode::JP implicitly
$utf8   = decode("euc-jp", $euc_jp); # ditto

ABSTRACT

This module implements Japanese charset encodings. Encodings supported are as follows.

  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)
  --------------------------------------------------------------------

DESCRIPTION

To find how to use this module in detail, see Encode.

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

$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.

BUGS

ASCII part (0x00-0x7f) is preserved for all encodings, even though it conflicts with mappings by the Unicode Consortium. See

http://www.debian.or.jp/~kubota/unicode-symbols.html.en

to find why it is implemented that way.

SEE ALSO

Encode