| /* |
| * _codecs_hk.c: Codecs collection for encodings from Hong Kong |
| * |
| * Written by Hye-Shik Chang <[email protected]> |
| * $CJKCodecs: _codecs_hk.c,v 1.4 2004/07/18 04:44:27 perky Exp $ |
| */ |
| |
| #define USING_IMPORTED_MAPS |
| |
| #include "cjkcodecs.h" |
| #include "mappings_hk.h" |
| |
| /* |
| * BIG5HKSCS codec |
| */ |
| |
| static const encode_map *big5_encmap = NULL; |
| static const decode_map *big5_decmap = NULL; |
| |
| CODEC_INIT(big5hkscs) |
| { |
| static int initialized = 0; |
| |
| if (!initialized && IMPORT_MAP(tw, big5, &big5_encmap, &big5_decmap)) |
| return -1; |
| initialized = 1; |
| return 0; |
| } |
| |
| ENCODER(big5hkscs) |
| { |
| while (inleft > 0) { |
| ucs4_t c = **inbuf; |
| DBCHAR code; |
| int insize; |
| |
| if (c < 0x80) { |
| REQUIRE_OUTBUF(1) |
| **outbuf = (unsigned char)c; |
| NEXT(1, 1) |
| continue; |
| } |
| |
| DECODE_SURROGATE(c) |
| insize = GET_INSIZE(c); |
| |
| REQUIRE_OUTBUF(2) |
| |
| if (c < 0x10000) { |
| TRYMAP_ENC(big5hkscs_bmp, code, c); |
| else TRYMAP_ENC(big5, code, c); |
| else return 1; |
| } |
| else if (c < 0x20000) |
| return insize; |
| else if (c < 0x30000) { |
| TRYMAP_ENC(big5hkscs_nonbmp, code, c & 0xffff); |
| else return insize; |
| } |
| else |
| return insize; |
| |
| OUT1(code >> 8) |
| OUT2(code & 0xFF) |
| NEXT(insize, 2) |
| } |
| |
| return 0; |
| } |
| |
| #define BH2S(c1, c2) (((c1) - 0x88) * (0xfe - 0x40 + 1) + ((c2) - 0x40)) |
| |
| DECODER(big5hkscs) |
| { |
| while (inleft > 0) { |
| unsigned char c = IN1; |
| ucs4_t decoded; |
| |
| REQUIRE_OUTBUF(1) |
| |
| if (c < 0x80) { |
| OUT1(c) |
| NEXT(1, 1) |
| continue; |
| } |
| |
| REQUIRE_INBUF(2) |
| |
| if (0xc6 <= c && c <= 0xc8 && (c >= 0xc7 || IN2 >= 0xa1)) |
| goto hkscsdec; |
| |
| TRYMAP_DEC(big5, **outbuf, c, IN2) { |
| NEXT(2, 1) |
| } |
| else |
| hkscsdec: TRYMAP_DEC(big5hkscs, decoded, c, IN2) { |
| int s = BH2S(c, IN2); |
| const unsigned char *hintbase; |
| |
| assert(0x88 <= c && c <= 0xfe); |
| assert(0x40 <= IN2 && IN2 <= 0xfe); |
| |
| if (BH2S(0x88, 0x40) <= s && s <= BH2S(0xa0, 0xfe)) { |
| hintbase = big5hkscs_phint_0; |
| s -= BH2S(0x88, 0x40); |
| } |
| else if (BH2S(0xc6,0xa1) <= s && s <= BH2S(0xc8,0xfe)){ |
| hintbase = big5hkscs_phint_11939; |
| s -= BH2S(0xc6, 0xa1); |
| } |
| else if (BH2S(0xf9,0xd6) <= s && s <= BH2S(0xfe,0xfe)){ |
| hintbase = big5hkscs_phint_21733; |
| s -= BH2S(0xf9, 0xd6); |
| } |
| else |
| return MBERR_INTERNAL; |
| |
| if (hintbase[s >> 3] & (1 << (s & 7))) { |
| WRITEUCS4(decoded | 0x20000) |
| NEXT_IN(2) |
| } |
| else { |
| OUT1(decoded) |
| NEXT(2, 1) |
| } |
| } |
| else return 2; |
| } |
| |
| return 0; |
| } |
| |
| |
| BEGIN_MAPPINGS_LIST |
| MAPPING_DECONLY(big5hkscs) |
| MAPPING_ENCONLY(big5hkscs_bmp) |
| MAPPING_ENCONLY(big5hkscs_nonbmp) |
| END_MAPPINGS_LIST |
| |
| BEGIN_CODECS_LIST |
| CODEC_STATELESS_WINIT(big5hkscs) |
| END_CODECS_LIST |
| |
| I_AM_A_MODULE_FOR(hk) |
