| Hye-Shik Chang | 3e2a306 | 2004-01-17 14:29:29 +0000 | [diff] [blame] | 1 | /* |
| 2 | * _gbk.c: the GBK codec |
| 3 | * |
| 4 | * Written by Hye-Shik Chang <perky@FreeBSD.org> |
| 5 | * $CJKCodecs: _gbk.c,v 1.2 2003/12/31 05:46:55 perky Exp $ |
| 6 | */ |
| 7 | |
| 8 | #include "codeccommon.h" |
| 9 | #include "tweak_gbk.h" |
| 10 | |
| 11 | ENCMAP(gbcommon) |
| 12 | DECMAP(gb2312) |
| 13 | DECMAP(gbkext) |
| 14 | |
| 15 | ENCODER(gbk) |
| 16 | { |
| 17 | while (inleft > 0) { |
| 18 | Py_UNICODE c = IN1; |
| 19 | DBCHAR code; |
| 20 | |
| 21 | if (c < 0x80) { |
| Hye-Shik Chang | d210a5b | 2004-01-23 14:36:17 +0000 | [diff] [blame^] | 22 | WRITE1((unsigned char)c) |
| Hye-Shik Chang | 3e2a306 | 2004-01-17 14:29:29 +0000 | [diff] [blame] | 23 | NEXT(1, 1) |
| 24 | continue; |
| 25 | } |
| 26 | UCS4INVALID(c) |
| 27 | |
| 28 | RESERVE_OUTBUF(2) |
| 29 | |
| 30 | GBK_PREENCODE(c, code) |
| 31 | else TRYMAP_ENC(gbcommon, code, c); |
| 32 | else return 1; |
| 33 | |
| 34 | OUT1((code >> 8) | 0x80) |
| 35 | if (code & 0x8000) |
| 36 | OUT2((code & 0xFF)) /* MSB set: GBK */ |
| 37 | else |
| 38 | OUT2((code & 0xFF) | 0x80) /* MSB unset: GB2312 */ |
| 39 | NEXT(1, 2) |
| 40 | } |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | DECODER(gbk) |
| 46 | { |
| 47 | while (inleft > 0) { |
| 48 | unsigned char c = IN1; |
| 49 | |
| 50 | RESERVE_OUTBUF(1) |
| 51 | |
| 52 | if (c < 0x80) { |
| 53 | OUT1(c) |
| 54 | NEXT(1, 1) |
| 55 | continue; |
| 56 | } |
| 57 | |
| 58 | RESERVE_INBUF(2) |
| 59 | |
| 60 | GBK_PREDECODE(c, IN2, **outbuf) |
| 61 | else TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, IN2 ^ 0x80); |
| 62 | else TRYMAP_DEC(gbkext, **outbuf, c, IN2); |
| 63 | else return 2; |
| 64 | |
| 65 | NEXT(2, 1) |
| 66 | } |
| 67 | |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | #include "codecentry.h" |
| 72 | BEGIN_CODEC_REGISTRY(gbk) |
| 73 | MAPOPEN(zh_CN) |
| 74 | IMPORTMAP_DEC(gb2312) |
| 75 | IMPORTMAP_DEC(gbkext) |
| 76 | IMPORTMAP_ENC(gbcommon) |
| 77 | MAPCLOSE() |
| 78 | END_CODEC_REGISTRY(gbk) |