Web Encodings

My scratchpad for encoding related notes.

Goals

• Document existing practices for
  • Supported encodings
  • Supported aliases
  • Supported matching algorithm
• Converge the various used algorithms
• Get the new rules implemented

Current Implementations

Does this differ per platform? Opera might differ a bit on Mac.

Data

Integrate this data somehow:

• http://coq.no/character-tables/mime/iso-2022/en
• http://coq.no/character-tables/mime/euc/en
• http://coq.no/character-tables/mime/locale-specific/en

Opera

Matching

UTS22 and ASCII lowercasing.

Encodings

Encoding	Aliases	Decoded As	Notes
big5	big5, cnbig5, csbig5
big5-hkscs	big5hkscs
euc-jp	cseucpkdfmtjapanese, eucjp, extendedunixcodepackedformatforjapanese
euc-kr	cseuckr, csksc56011987, euckr, isoir149, korean, ksc5601, ksc56011987, ksc56011989, windows949
euc-tw	euctw
gb18030	gb18030
gbk	chinese, cngb, cp936, csgb2312, csiso58gb231280, euccn, gb2312, gb231280, gbk, isoir58, ms936, windows936
hz-gb-2312	hzgb2312
ibm866	866, cp866, csibm866, ibm866
iso-2022-cn	iso2022cn
iso-2022-jp	csiso2022jp, iso2022jp
iso-2022-jp-1	iso2022jp1
iso-2022-kr	csiso2022kr, iso2022kr
iso-8859-1	cp819, csisolatin1, ibm819, iso88591, iso885911987, isoir100, l1, latin1	windows-1252
iso-8859-2	csisolatin2, iso88592, iso885921987, isoir101, l2, latin2
iso-8859-3	csisolatin3, iso88593, iso885931988, isoir109, l3, latin3
iso-8859-4	csisolatin4, iso88594, iso885941988, isoir110, l4, latin4
iso-8859-5	csisolatincyrillic, cyrillic, iso88595, iso885951988, isoir144
iso-8859-6	arabic, asmo708, csiso88596e, csisolatinarabic, ecma114, iso88596, iso885961987, iso88596e, isoir127
iso-8859-6-i	csiso88596i, iso88596i
iso-8859-7	csisolatingreek, ecma118, elot928, greek, greek8, iso88597, iso885971987, isoir126
iso-8859-8	csiso88598e, csisolatinhebrew, hebrew, iso88598, iso885981988, iso88598e, isoir138, visual
iso-8859-8-i	csiso88598i, iso88598i
iso-8859-9	csisolatin5, iso88599, iso885991989, isoir148, l5, latin5
iso-8859-10	csisolatin6, iso885910, iso8859101992, isoir157, l6, latin6
iso-8859-11	iso885911, tis620, tis6202533, windows874
iso-8859-13	iso885913
iso-8859-14	iso885914, iso8859141998, isoceltic, isoir199, l8, latin8
iso-8859-15	iso885915, latin9
iso-8859-16	iso885916, iso8859162001, isoir226, l10, latin10
koi8-r	cskoi8r, koi8r
koi8-u	koi8u
macintosh	csmacintosh, mac, macintosh, macroman		Likely disabled.
shift_jis	cp932, csshiftjis, cswindows31j, ms932, mskanji, shiftjis, sjis, windows31j
tcvn	tcvn, viettcvn
us-ascii	ansix341968, ansix341986, ascii, cp367, csascii, csinvariant, csiso646basic1983, ibm367, invariant, iso646basic1983, iso646irv1991, iso646us, isoir6, ref, us, usascii	windows-1252
utf-16	csunicode, csunicode11, csunicodeascii, iso10646j1, iso10646ucs2, iso10646ucsbasic, utf16
utf-16be	utf16be
utf-16le	utf16le
utf-8	utf8
viscii	csviscii, viscii
windows-1250	cp1250, microsoftcp1250, windows1250
windows-1251	cp1251, microsoftcp1251, windows1251
windows-1252	cp1252, microsoftcp1252, windows1252
windows-1253	cp1253, microsoftcp1253, windows1253
windows-1254	cp1254, microsoftcp1254, windows1254
windows-1255	cp1255, microsoftcp1255, windows1255
windows-1256	cp1256, microsoftcp1256, windows1256
windows-1257	cp1257, microsoftcp1257, windows1257
windows-1258	cp1258, microsoftcp1258, windows1258
windows-sami-2	samiws2, windowssami2, ws2
x-mac-ce	macce		Likely disabled.
x-mac-cyrillic	maccyrillic		Likely disabled.
x-mac-greek	macgreek		Likely disabled.
x-mac-turkish	macturkish		Likely disabled.
x-vps	vps

Firefox

FIXME

Chrome

FIXME

Internet Explorer

Needs sorting out:

• http://blogs.msdn.com/shawnste/archive/2009/08/18/alternate-encoding-names-recognized-by-net-ie.aspx
• http://msdn.microsoft.com/en-us/library/system.text.encoding.getencodings.aspx

Safari

FIXME