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$/i EUC (Extended Unix Character)
shiftjis /\bshift.*jis$/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

$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.