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Encode::JP
Japanese Encodings

Encode::JP - Japanese Encodings


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      /\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                         Code Page 932   

                                = Shift JIS + MS/IBM vendor mappings

  jis0201-raw                   JIS0201, raw format

  jis0208-raw                   JIS0201, raw format

  jis0212-raw                   JIS0201, 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

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

to find out why it is implemented that way.


SEE ALSO

Encode

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