/* * _codecs_kr.c: Codecs collection for Korean encodings * * Written by Hye-Shik Chang */ #include "cjkcodecs.h" #include "mappings_kr.h" /* * EUC-KR codec */ #define EUCKR_JAMO_FIRSTBYTE 0xA4 #define EUCKR_JAMO_FILLER 0xD4 static const unsigned char u2cgk_choseong[19] = { 0xa1, 0xa2, 0xa4, 0xa7, 0xa8, 0xa9, 0xb1, 0xb2, 0xb3, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe }; static const unsigned char u2cgk_jungseong[21] = { 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3 }; static const unsigned char u2cgk_jongseong[28] = { 0xd4, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xba, 0xbb, 0xbc, 0xbd, 0xbe }; ENCODER(euc_kr) { while (*inpos < inlen) { Py_UCS4 c = INCHAR1; DBCHAR code; if (c < 0x80) { WRITEBYTE1((unsigned char)c) NEXT(1, 1); continue; } if (c > 0xFFFF) return 1; REQUIRE_OUTBUF(2) TRYMAP_ENC(cp949, code, c); else return 1; if ((code & 0x8000) == 0) { /* KS X 1001 coded character */ OUTBYTE1((code >> 8) | 0x80) OUTBYTE2((code & 0xFF) | 0x80) NEXT(1, 2); } else { /* Mapping is found in CP949 extension, * but we encode it in KS X 1001:1998 Annex 3, * make-up sequence for EUC-KR. */ REQUIRE_OUTBUF(8) /* syllable composition precedence */ OUTBYTE1(EUCKR_JAMO_FIRSTBYTE) OUTBYTE2(EUCKR_JAMO_FILLER) /* All codepoints in CP949 extension are in unicode * Hangul Syllable area. */ assert(0xac00 <= c && c <= 0xd7a3); c -= 0xac00; OUTBYTE3(EUCKR_JAMO_FIRSTBYTE) OUTBYTE4(u2cgk_choseong[c / 588]) NEXT_OUT(4); OUTBYTE1(EUCKR_JAMO_FIRSTBYTE) OUTBYTE2(u2cgk_jungseong[(c / 28) % 21]) OUTBYTE3(EUCKR_JAMO_FIRSTBYTE) OUTBYTE4(u2cgk_jongseong[c % 28]) NEXT(1, 4); } } return 0; } #define NONE 127 static const unsigned char cgk2u_choseong[] = { /* [A1, BE] */ 0, 1, NONE, 2, NONE, NONE, 3, 4, 5, NONE, NONE, NONE, NONE, NONE, NONE, NONE, 6, 7, 8, NONE, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 }; static const unsigned char cgk2u_jongseong[] = { /* [A1, BE] */ 1, 2, 3, 4, 5, 6, 7, NONE, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, NONE, 18, 19, 20, 21, 22, NONE, 23, 24, 25, 26, 27 }; DECODER(euc_kr) { while (inleft > 0) { unsigned char c = INBYTE1; if (c < 0x80) { OUTCHAR(c); NEXT_IN(1); continue; } REQUIRE_INBUF(2) if (c == EUCKR_JAMO_FIRSTBYTE && INBYTE2 == EUCKR_JAMO_FILLER) { /* KS X 1001:1998 Annex 3 make-up sequence */ DBCHAR cho, jung, jong; REQUIRE_INBUF(8) if ((*inbuf)[2] != EUCKR_JAMO_FIRSTBYTE || (*inbuf)[4] != EUCKR_JAMO_FIRSTBYTE || (*inbuf)[6] != EUCKR_JAMO_FIRSTBYTE) return 1; c = (*inbuf)[3]; if (0xa1 <= c && c <= 0xbe) cho = cgk2u_choseong[c - 0xa1]; else cho = NONE; c = (*inbuf)[5]; jung = (0xbf <= c && c <= 0xd3) ? c - 0xbf : NONE; c = (*inbuf)[7]; if (c == EUCKR_JAMO_FILLER) jong = 0; else if (0xa1 <= c && c <= 0xbe) jong = cgk2u_jongseong[c - 0xa1]; else jong = NONE; if (cho == NONE || jung == NONE || jong == NONE) return 1; OUTCHAR(0xac00 + cho*588 + jung*28 + jong); NEXT_IN(8); } else TRYMAP_DEC(ksx1001, writer, c ^ 0x80, INBYTE2 ^ 0x80) { NEXT_IN(2); } else return 1; } return 0; } #undef NONE /* * CP949 codec */ ENCODER(cp949) { while (*inpos < inlen) { Py_UCS4 c = INCHAR1; DBCHAR code; if (c < 0x80) { WRITEBYTE1((unsigned char)c) NEXT(1, 1); continue; } if (c > 0xFFFF) return 1; REQUIRE_OUTBUF(2) TRYMAP_ENC(cp949, code, c); else return 1; OUTBYTE1((code >> 8) | 0x80) if (code & 0x8000) OUTBYTE2(code & 0xFF) /* MSB set: CP949 */ else OUTBYTE2((code & 0xFF) | 0x80) /* MSB unset: ks x 1001 */ NEXT(1, 2); } return 0; } DECODER(cp949) { while (inleft > 0) { unsigned char c = INBYTE1; if (c < 0x80) { OUTCHAR(c); NEXT_IN(1); continue; } REQUIRE_INBUF(2) TRYMAP_DEC(ksx1001, writer, c ^ 0x80, INBYTE2 ^ 0x80); else TRYMAP_DEC(cp949ext, writer, c, INBYTE2); else return 1; NEXT_IN(2); } return 0; } /* * JOHAB codec */ static const unsigned char u2johabidx_choseong[32] = { 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, }; static const unsigned char u2johabidx_jungseong[32] = { 0x03, 0x04, 0x05, 0x06, 0x07, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x1a, 0x1b, 0x1c, 0x1d, }; static const unsigned char u2johabidx_jongseong[32] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, }; static const DBCHAR u2johabjamo[] = { 0x8841, 0x8c41, 0x8444, 0x9041, 0x8446, 0x8447, 0x9441, 0x9841, 0x9c41, 0x844a, 0x844b, 0x844c, 0x844d, 0x844e, 0x844f, 0x8450, 0xa041, 0xa441, 0xa841, 0x8454, 0xac41, 0xb041, 0xb441, 0xb841, 0xbc41, 0xc041, 0xc441, 0xc841, 0xcc41, 0xd041, 0x8461, 0x8481, 0x84a1, 0x84c1, 0x84e1, 0x8541, 0x8561, 0x8581, 0x85a1, 0x85c1, 0x85e1, 0x8641, 0x8661, 0x8681, 0x86a1, 0x86c1, 0x86e1, 0x8741, 0x8761, 0x8781, 0x87a1, }; ENCODER(johab) { while (*inpos < inlen) { Py_UCS4 c = INCHAR1; DBCHAR code; if (c < 0x80) { WRITEBYTE1((unsigned char)c) NEXT(1, 1); continue; } if (c > 0xFFFF) return 1; REQUIRE_OUTBUF(2) if (c >= 0xac00 && c <= 0xd7a3) { c -= 0xac00; code = 0x8000 | (u2johabidx_choseong[c / 588] << 10) | (u2johabidx_jungseong[(c / 28) % 21] << 5) | u2johabidx_jongseong[c % 28]; } else if (c >= 0x3131 && c <= 0x3163) code = u2johabjamo[c - 0x3131]; else TRYMAP_ENC(cp949, code, c) { unsigned char c1, c2, t2; unsigned short t1; assert((code & 0x8000) == 0); c1 = code >> 8; c2 = code & 0xff; if (((c1 >= 0x21 && c1 <= 0x2c) || (c1 >= 0x4a && c1 <= 0x7d)) && (c2 >= 0x21 && c2 <= 0x7e)) { t1 = (c1 < 0x4a ? (c1 - 0x21 + 0x1b2) : (c1 - 0x21 + 0x197)); t2 = ((t1 & 1) ? 0x5e : 0) + (c2 - 0x21); OUTBYTE1(t1 >> 1) OUTBYTE2(t2 < 0x4e ? t2 + 0x31 : t2 + 0x43) NEXT(1, 2); continue; } else return 1; } else return 1; OUTBYTE1(code >> 8) OUTBYTE2(code & 0xff) NEXT(1, 2); } return 0; } #define FILL 0xfd #define NONE 0xff static const unsigned char johabidx_choseong[32] = { NONE, FILL, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, }; static const unsigned char johabidx_jungseong[32] = { NONE, NONE, FILL, 0x00, 0x01, 0x02, 0x03, 0x04, NONE, NONE, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, NONE, NONE, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, NONE, NONE, 0x11, 0x12, 0x13, 0x14, NONE, NONE, }; static const unsigned char johabidx_jongseong[32] = { NONE, FILL, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, NONE, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, NONE, NONE, }; static const unsigned char johabjamo_choseong[32] = { NONE, FILL, 0x31, 0x32, 0x34, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, }; static const unsigned char johabjamo_jungseong[32] = { NONE, NONE, FILL, 0x4f, 0x50, 0x51, 0x52, 0x53, NONE, NONE, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, NONE, NONE, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, NONE, NONE, 0x60, 0x61, 0x62, 0x63, NONE, NONE, }; static const unsigned char johabjamo_jongseong[32] = { NONE, FILL, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, NONE, 0x42, 0x44, 0x45, 0x46, 0x47, 0x48, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, NONE, NONE, }; DECODER(johab) { while (inleft > 0) { unsigned char c = INBYTE1, c2; if (c < 0x80) { OUTCHAR(c); NEXT_IN(1); continue; } REQUIRE_INBUF(2) c2 = INBYTE2; if (c < 0xd8) { /* johab hangul */ unsigned char c_cho, c_jung, c_jong; unsigned char i_cho, i_jung, i_jong; c_cho = (c >> 2) & 0x1f; c_jung = ((c << 3) | c2 >> 5) & 0x1f; c_jong = c2 & 0x1f; i_cho = johabidx_choseong[c_cho]; i_jung = johabidx_jungseong[c_jung]; i_jong = johabidx_jongseong[c_jong]; if (i_cho == NONE || i_jung == NONE || i_jong == NONE) return 1; /* we don't use U+1100 hangul jamo yet. */ if (i_cho == FILL) { if (i_jung == FILL) { if (i_jong == FILL) OUTCHAR(0x3000); else OUTCHAR(0x3100 | johabjamo_jongseong[c_jong]); } else { if (i_jong == FILL) OUTCHAR(0x3100 | johabjamo_jungseong[c_jung]); else return 1; } } else { if (i_jung == FILL) { if (i_jong == FILL) OUTCHAR(0x3100 | johabjamo_choseong[c_cho]); else return 1; } else OUTCHAR(0xac00 + i_cho * 588 + i_jung * 28 + (i_jong == FILL ? 0 : i_jong)); } NEXT_IN(2); } else { /* KS X 1001 except hangul jamos and syllables */ if (c == 0xdf || c > 0xf9 || c2 < 0x31 || (c2 >= 0x80 && c2 < 0x91) || (c2 & 0x7f) == 0x7f || (c == 0xda && (c2 >= 0xa1 && c2 <= 0xd3))) return 1; else { unsigned char t1, t2; t1 = (c < 0xe0 ? 2 * (c - 0xd9) : 2 * c - 0x197); t2 = (c2 < 0x91 ? c2 - 0x31 : c2 - 0x43); t1 = t1 + (t2 < 0x5e ? 0 : 1) + 0x21; t2 = (t2 < 0x5e ? t2 : t2 - 0x5e) + 0x21; TRYMAP_DEC(ksx1001, writer, t1, t2); else return 1; NEXT_IN(2); } } } return 0; } #undef NONE #undef FILL BEGIN_MAPPINGS_LIST MAPPING_DECONLY(ksx1001) MAPPING_ENCONLY(cp949) MAPPING_DECONLY(cp949ext) END_MAPPINGS_LIST BEGIN_CODECS_LIST CODEC_STATELESS(euc_kr) CODEC_STATELESS(cp949) CODEC_STATELESS(johab) END_CODECS_LIST I_AM_A_MODULE_FOR(kr)