MirBSD manpage: Encode::JP(3p)

ext::Encode::JP::PerlpProgrammers Referencext::Encode::JP::JP(3p)


     Encode::JP - Japanese Encodings


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


     This module implements Japanese charset encodings.  Encod-
     ings supported are as follows.

       Canonical   Alias             Description
       euc-jp      /\beuc.*jp$/i     EUC (Extended Unix Character)
       shiftjis    /\bshift.*jis$/i  Shift JIS (aka MS Kanji)
       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                   JIS0201, raw format
       jis0212-raw                   JIS0201, raw format


     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);


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

     yield the same result but

perl v5.8.8                2005-02-05                           1

ext::Encode::JP::PerlpProgrammers Referencext::Encode::JP::JP(3p)

       $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 lay-
     out as much as possible.


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


     to find out why it is implemented that way.



perl v5.8.8                2005-02-05                           2

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