diff options
Diffstat (limited to 'Modules/cjkcodecs/_codecs_cn.c')
| -rw-r--r-- | Modules/cjkcodecs/_codecs_cn.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/Modules/cjkcodecs/_codecs_cn.c b/Modules/cjkcodecs/_codecs_cn.c index fb51297..c811a67 100644 --- a/Modules/cjkcodecs/_codecs_cn.c +++ b/Modules/cjkcodecs/_codecs_cn.c @@ -15,14 +15,26 @@ #undef hz #endif -#define GBK_PREDECODE(dc1, dc2, assi) \ +/* GBK and GB2312 map differently in few codepoints that are listed below: + * + * gb2312 gbk + * A1A4 U+30FB KATAKANA MIDDLE DOT U+00B7 MIDDLE DOT + * A1AA U+2015 HORIZONTAL BAR U+2014 EM DASH + * A844 undefined U+2015 HORIZONTAL BAR + */ + +#define GBK_DECODE(dc1, dc2, assi) \ if ((dc1) == 0xa1 && (dc2) == 0xaa) (assi) = 0x2014; \ else if ((dc1) == 0xa8 && (dc2) == 0x44) (assi) = 0x2015; \ - else if ((dc1) == 0xa1 && (dc2) == 0xa4) (assi) = 0x00b7; -#define GBK_PREENCODE(code, assi) \ + else if ((dc1) == 0xa1 && (dc2) == 0xa4) (assi) = 0x00b7; \ + else TRYMAP_DEC(gb2312, assi, dc1 ^ 0x80, dc2 ^ 0x80); \ + else TRYMAP_DEC(gbkext, assi, dc1, dc2); + +#define GBK_ENCODE(code, assi) \ if ((code) == 0x2014) (assi) = 0xa1aa; \ else if ((code) == 0x2015) (assi) = 0xa844; \ - else if ((code) == 0x00b7) (assi) = 0xa1a4; + else if ((code) == 0x00b7) (assi) = 0xa1a4; \ + else if ((code) != 0x30fb && TRYMAP_ENC_COND(gbcommon, assi, code)); /* * GB2312 codec @@ -99,8 +111,7 @@ ENCODER(gbk) REQUIRE_OUTBUF(2) - GBK_PREENCODE(c, code) - else TRYMAP_ENC(gbcommon, code, c); + GBK_ENCODE(c, code) else return 1; OUT1((code >> 8) | 0x80) @@ -129,9 +140,7 @@ DECODER(gbk) REQUIRE_INBUF(2) - GBK_PREDECODE(c, IN2, **outbuf) - else TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, IN2 ^ 0x80); - else TRYMAP_DEC(gbkext, **outbuf, c, IN2); + GBK_DECODE(c, IN2, **outbuf) else return 2; NEXT(2, 1) @@ -187,9 +196,7 @@ ENCODER(gb18030) REQUIRE_OUTBUF(2) - GBK_PREENCODE(c, code) - else TRYMAP_ENC(gbcommon, code, c); - else TRYMAP_ENC(gb18030ext, code, c); + GBK_ENCODE(c, code) else { const struct _gb18030_to_unibmp_ranges *utrrange; @@ -287,9 +294,7 @@ DECODER(gb18030) return 4; } - GBK_PREDECODE(c, c2, **outbuf) - else TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, c2 ^ 0x80); - else TRYMAP_DEC(gbkext, **outbuf, c, c2); + GBK_DECODE(c, c2, **outbuf) else TRYMAP_DEC(gb18030ext, **outbuf, c, c2); else return 2; |