Encode::JP - Japanese Encodings
- use Encode qw/encode decode/;
- $euc_jp = encode("euc-jp", $utf8); # loads Encode::JP implicitly
- $utf8 = decode("euc-jp", $euc_jp); # ditto
This module implements Japanese charset encodings. Encodings supported are as follows.
- Canonical Alias Description
- --------------------------------------------------------------------
- euc-jp /\beuc.*jp$/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 JIS0201, raw format
- jis0212-raw JIS0201, raw format
- --------------------------------------------------------------------
To find out how to use this module in detail, see Encode.
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.
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.