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Encode-2.13
River stage five • 1114 direct dependents • 33589 total dependents
/ Encode::TW
Security Advisories (3)
CVE-2016-1238 (2016-07-27)

Loading optional modules from . (current directory).

CVE-2021-36770 (2021-07-17)

Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

CVE-2011-2939 (2012-01-13)

Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.

NAME

Encode::TW - Taiwan-based Chinese Encodings

SYNOPSIS

use Encode qw/encode decode/; 
$big5 = encode("big5", $utf8); # loads Encode::TW implicitly
$utf8 = decode("big5", $big5); # ditto

DESCRIPTION

This module implements tradition Chinese charset encodings as used in Taiwan and Hong Kong. Encodings supported are as follows.

  Canonical   Alias		Description
  --------------------------------------------------------------------
  big5-eten   /\bbig-?5$/i	Big5 encoding (with ETen extensions)
	      /\bbig5-?et(en)?$/i
	      /\btca-?big5$/i
  big5-hkscs  /\bbig5-?hk(scs)?$/i
              /\bhk(scs)?-?big5$/i
                                Big5 + Cantonese characters in Hong Kong
  MacChineseTrad		Big5 + Apple Vendor Mappings
  cp950		                Code Page 950 
                                = Big5 + Microsoft vendor mappings
  --------------------------------------------------------------------

To find out how to use this module in detail, see Encode.

NOTES

Due to size concerns, EUC-TW (Extended Unix Character), CCCII (Chinese Character Code for Information Interchange), BIG5PLUS (CMEX's Big5+) and BIG5EXT (CMEX's Big5e) are distributed separately on CPAN, under the name Encode::HanExtra. That module also contains extra China-based encodings.

BUGS

Since the original big5 encoding (1984) is not supported anywhere (glibc and DOS-based systems uses big5 to mean big5-eten; Microsoft uses big5 to mean cp950), a conscious decision was made to alias big5 to big5-eten, which is the de facto superset of the original big5.

The CNS11643 encoding files are not complete. For common CNS11643 manipulation, please use EUC-TW in Encode::HanExtra, which contains planes 1-7.

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.

SEE ALSO

Encode