Encode::JP - Japanese Encodings

1. SYNOPSIS
2. ABSTRACT
3. DESCRIPTION
4. Note on ISO-2022-JP(-1)?
5. BUGS
6. SEE ALSO

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      /\beuc.*jp$/i       EUC (Extended Unix Character)
            /\bjp.*euc/i   
        /\bujis$/i
shiftjis    /\bshift.*jis$/i    Shift JIS (aka MS Kanji)
        /\bsjis$/i
7bit-jis    /\bjis$/i           7bit JIS
iso-2022-jp                     ISO-2022-JP                  [RFC1468]
              = 7bit JIS with all Halfwidth Kana 
                converted to Fullwidth
iso-2022-jp-1                   ISO-2022-JP-1                [RFC2237]
                              = ISO-2022-JP with JIS X 0212-1990
                support.  See below
MacJapanese                     Shift JIS + Apple vendor mappings
cp932       /\bwindows-31j$/i Code Page 932
                              = Shift JIS + MS/IBM vendor mappings
jis0201-raw                   JIS0201, raw format
jis0208-raw                   JIS0208, raw format
jis0212-raw                   JIS0212, raw format
--------------------------------------------------------------------

DESCRIPTION

To find out 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);

and

$utf8 = decode('iso-2022-jp',   $stream);

yield 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 first converted to U+3013 (0xA2AE in EUC-JP; a white square also known as 'Tofu' or 'geta mark') then fed to the decoding engine. U+FFFD is not used, in order to preserve text layout as much as possible.

BUGS

The ASCII region (0x00-0x7f) is preserved for all encodings, even though this conflicts with mappings by the Unicode Consortium.

SEE ALSO

Encode