Section: User Contributed Perl Documentation (3)
Encode::HanExtra - Extra sets of Chinese encodings
This document describes version 0.23 of Encode::HanExtra, released
November 10, 2007.
# Traditional Chinese
$euc_tw = encode("euc-tw", $utf8); # loads Encode::HanExtra implicitly
$utf8 = decode("euc-tw", $euc_tw); # ditto
# Simplified Chinese
$gb18030 = encode("gb18030", $utf8); # loads Encode::HanExtra implicitly
$utf8 = decode("gb18030", $gb18030); # ditto
Perl 5.7.3 and later ships with an adequate set of Chinese encodings,
including the commonly used "CP950"
(also known as "GBK"
(alias for "Big5-Eten"
However, the numbers of Chinese encodings are staggering, and a complete
coverage will easily increase the size of perl distribution by several
megabytes; hence, this CPAN module tries to provide the rest of them.
If you are using Perl 5.8 or later, Encode::CN and Encode::TW will
automatically load the extra encodings for you, so there's no need to
explicitly write "use Encode::HanExtra" if you are using one of them
This version includes the following encoding tables:
Canonical Alias Description
big5-1984 /\b(tca-)?big5-?(19)?84$/i TCA's original Big5-1984
big5-2003 /\b(cmex-)?big5-?(20)?03$/i Big5-2003 (national standard)
big5ext /\b(cmex-)?big5-?e(xt)?$/i CMEX's Big5e Extension
big5plus /\b(cmex-)?big5-?p(lus)?$/i CMEX's Big5+ Extension
cccii /\b(ccag-)?cccii$/i Chinese Character Code for
cns11643-1 /\bCNS[-_ ]?11643[-_]1$/i Taiwan's CNS map, plane 1
cns11643-2 /\bCNS[-_ ]?11643[-_]2$/i Taiwan's CNS map, plane 2
cns11643-3 /\bCNS[-_ ]?11643[-_]3$/i Taiwan's CNS map, plane 3
cns11643-4 /\bCNS[-_ ]?11643[-_]4$/i Taiwan's CNS map, plane 4
cns11643-5 /\bCNS[-_ ]?11643[-_]5$/i Taiwan's CNS map, plane 5
cns11643-6 /\bCNS[-_ ]?11643[-_]6$/i Taiwan's CNS map, plane 6
cns11643-7 /\bCNS[-_ ]?11643[-_]7$/i Taiwan's CNS map, plane 7
cns11643-f /\bCNS[-_ ]?11643[-_]f$/i Taiwan's CNS map, plane F
euc-tw /\beuc.*tw$/i EUC (Extended Unix Character)
gb18030 /\bGB[-_ ]?18030$/i GBK with Traditional Characters
unisys /\bunisys$/i Unisys Traditional Chinese
unisys-sosi1 Unisys SOSI1 transport encoding
unisys-sosi2 Unisys SOSI2 transport encoding
Detailed descriptions are as follows:
This is the original Big5 encoding made by TCA Taiwan.
This revised encoding is now national standard, as an appendix of CNS11643.
This encoding, while not heavily used, is an attempt to bring all Taiwan's
conflicting internal-use encodings together, and fit it as an extension to
the widely-deployed Big5 range, by CMEX Taiwan.
The CMEX's second (and less ambitious) try at unifying the most commonly
used characters not covered by Big5, while not polluting out of the 94x94
arragement like BIG5PLUS did.
The earliest (and most sophisticated) Traditional Chinese encoding, with a
three-byte raw character map, made in 1980 by the Chinese Character Analysis
Group (CCAG), used mostly in library systems.
The EUC transport version of "CNS11643" (planes 1-7), the comprehensive
character set used by the Taiwan government.
The raw character map extracted from the Unihan database, including the
plane F which wasn't included in "EUC-TW".
An extension to GBK, this encoding lists most Han characters (both simplified
and traditional), as well as some other encodings used by other peoples in
Unisys System's internal Chinese mapping.
If you are looking for ways to transliterate between Simplified and
Traditional Chinese, please take a look at Encode::HanConvert. Note
that the direct mapping via Unicode is lossy, and usually doesn't work
Please send me suggestions if you want to see more encoding added, such
as "BIG5-GCCS" (superseded by "BIG5-HKSCS"). Other suggestions are welcome,
Some of the maps here are generated from GNU
libiconv's test files,
with kind permission from Bruno Haible.
Map for "BIG5PLUS" is generated from the BIG52UCS.TXT file,
courtesy of CMEX Taiwan (Chinese Microcomputer Extended Foundation,
Map for "BIG5-1984" is supplied by imacat.
Map for "CCCII" is supplied by the Koha Taiwan project.
Audrey Tang <email@example.com
Copyright 2002-2007 by Audrey Tang <firstname.lastname@example.org
This software is released under the MIT license cited below.
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