4710c53dca
These files are a subset of the python-2.7.2.tgz distribution from python.org. Changed files from PyMod-2.7.2 have been copied into the corresponding directories of this tree, replacing the original files in the distribution. Signed-off-by: daryl.mcdaniel@intel.com git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13197 6f19259b-4bc3-4df7-8a09-765794883524
80 lines
2.7 KiB
Plaintext
80 lines
2.7 KiB
Plaintext
To generate or modify mapping headers
|
|
-------------------------------------
|
|
Mapping headers are imported from CJKCodecs as pre-generated form.
|
|
If you need to tweak or add something on it, please look at tools/
|
|
subdirectory of CJKCodecs' distribution.
|
|
|
|
|
|
|
|
Notes on implmentation characteristics of each codecs
|
|
-----------------------------------------------------
|
|
|
|
1) Big5 codec
|
|
|
|
The big5 codec maps the following characters as cp950 does rather
|
|
than conforming Unicode.org's that maps to 0xFFFD.
|
|
|
|
BIG5 Unicode Description
|
|
|
|
0xA15A 0x2574 SPACING UNDERSCORE
|
|
0xA1C3 0xFFE3 SPACING HEAVY OVERSCORE
|
|
0xA1C5 0x02CD SPACING HEAVY UNDERSCORE
|
|
0xA1FE 0xFF0F LT DIAG UP RIGHT TO LOW LEFT
|
|
0xA240 0xFF3C LT DIAG UP LEFT TO LOW RIGHT
|
|
0xA2CC 0x5341 HANGZHOU NUMERAL TEN
|
|
0xA2CE 0x5345 HANGZHOU NUMERAL THIRTY
|
|
|
|
Because unicode 0x5341, 0x5345, 0xFF0F, 0xFF3C is mapped to another
|
|
big5 codes already, a roundtrip compatibility is not guaranteed for
|
|
them.
|
|
|
|
|
|
2) cp932 codec
|
|
|
|
To conform to Windows's real mapping, cp932 codec maps the following
|
|
codepoints in addition of the official cp932 mapping.
|
|
|
|
CP932 Unicode Description
|
|
|
|
0x80 0x80 UNDEFINED
|
|
0xA0 0xF8F0 UNDEFINED
|
|
0xFD 0xF8F1 UNDEFINED
|
|
0xFE 0xF8F2 UNDEFINED
|
|
0xFF 0xF8F3 UNDEFINED
|
|
|
|
|
|
3) euc-jisx0213 codec
|
|
|
|
The euc-jisx0213 codec maps JIS X 0213 Plane 1 code 0x2140 into
|
|
unicode U+FF3C instead of U+005C as on unicode.org's mapping.
|
|
Because euc-jisx0213 has REVERSE SOLIDUS on 0x5c already and A140
|
|
is shown as a full width character, mapping to U+FF3C can make
|
|
more sense.
|
|
|
|
The euc-jisx0213 codec is enabled to decode JIS X 0212 codes on
|
|
codeset 2. Because JIS X 0212 and JIS X 0213 Plane 2 don't have
|
|
overlapped by each other, it doesn't bother standard conformations
|
|
(and JIS X 0213 Plane 2 is intended to use so.) On encoding
|
|
sessions, the codec will try to encode kanji characters in this
|
|
order:
|
|
|
|
JIS X 0213 Plane 1 -> JIS X 0213 Plane 2 -> JIS X 0212
|
|
|
|
|
|
4) euc-jp codec
|
|
|
|
The euc-jp codec is a compatibility instance on these points:
|
|
- U+FF3C FULLWIDTH REVERSE SOLIDUS is mapped to EUC-JP A1C0 (vice versa)
|
|
- U+00A5 YEN SIGN is mapped to EUC-JP 0x5c. (one way)
|
|
- U+203E OVERLINE is mapped to EUC-JP 0x7e. (one way)
|
|
|
|
|
|
5) shift-jis codec
|
|
|
|
The shift-jis codec is mapping 0x20-0x7e area to U+20-U+7E directly
|
|
instead of using JIS X 0201 for compatibility. The differences are:
|
|
- U+005C REVERSE SOLIDUS is mapped to SHIFT-JIS 0x5c.
|
|
- U+007E TILDE is mapped to SHIFT-JIS 0x7e.
|
|
- U+FF3C FULL-WIDTH REVERSE SOLIDUS is mapped to SHIFT-JIS 815f.
|
|
|