Manpages - Encode_JP.3perl

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.

Encode