/Modules/cjkcodecs/_codecs_jp.c
http://unladen-swallow.googlecode.com/ · C · 731 lines · 595 code · 95 blank · 41 comment · 229 complexity · c9dfdf08e178f8207d9b5fcac37582d4 MD5 · raw file
- /*
- * _codecs_jp.c: Codecs collection for Japanese encodings
- *
- * Written by Hye-Shik Chang <perky@FreeBSD.org>
- */
- #define USING_BINARY_PAIR_SEARCH
- #define EMPBASE 0x20000
- #include "cjkcodecs.h"
- #include "mappings_jp.h"
- #include "mappings_jisx0213_pair.h"
- #include "alg_jisx0201.h"
- #include "emu_jisx0213_2000.h"
- /*
- * CP932 codec
- */
- ENCODER(cp932)
- {
- while (inleft > 0) {
- Py_UNICODE c = IN1;
- DBCHAR code;
- unsigned char c1, c2;
- if (c <= 0x80) {
- WRITE1((unsigned char)c)
- NEXT(1, 1)
- continue;
- }
- else if (c >= 0xff61 && c <= 0xff9f) {
- WRITE1(c - 0xfec0)
- NEXT(1, 1)
- continue;
- }
- else if (c >= 0xf8f0 && c <= 0xf8f3) {
- /* Windows compatibility */
- REQUIRE_OUTBUF(1)
- if (c == 0xf8f0)
- OUT1(0xa0)
- else
- OUT1(c - 0xfef1 + 0xfd)
- NEXT(1, 1)
- continue;
- }
- UCS4INVALID(c)
- REQUIRE_OUTBUF(2)
- TRYMAP_ENC(cp932ext, code, c) {
- OUT1(code >> 8)
- OUT2(code & 0xff)
- }
- else TRYMAP_ENC(jisxcommon, code, c) {
- if (code & 0x8000) /* MSB set: JIS X 0212 */
- return 1;
- /* JIS X 0208 */
- c1 = code >> 8;
- c2 = code & 0xff;
- c2 = (((c1 - 0x21) & 1) ? 0x5e : 0) + (c2 - 0x21);
- c1 = (c1 - 0x21) >> 1;
- OUT1(c1 < 0x1f ? c1 + 0x81 : c1 + 0xc1)
- OUT2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41)
- }
- else if (c >= 0xe000 && c < 0xe758) {
- /* User-defined area */
- c1 = (Py_UNICODE)(c - 0xe000) / 188;
- c2 = (Py_UNICODE)(c - 0xe000) % 188;
- OUT1(c1 + 0xf0)
- OUT2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41)
- }
- else
- return 1;
- NEXT(1, 2)
- }
- return 0;
- }
- DECODER(cp932)
- {
- while (inleft > 0) {
- unsigned char c = IN1, c2;
- REQUIRE_OUTBUF(1)
- if (c <= 0x80) {
- OUT1(c)
- NEXT(1, 1)
- continue;
- }
- else if (c >= 0xa0 && c <= 0xdf) {
- if (c == 0xa0)
- OUT1(0xf8f0) /* half-width katakana */
- else
- OUT1(0xfec0 + c)
- NEXT(1, 1)
- continue;
- }
- else if (c >= 0xfd/* && c <= 0xff*/) {
- /* Windows compatibility */
- OUT1(0xf8f1 - 0xfd + c)
- NEXT(1, 1)
- continue;
- }
- REQUIRE_INBUF(2)
- c2 = IN2;
- TRYMAP_DEC(cp932ext, **outbuf, c, c2);
- else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)){
- if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
- return 2;
- c = (c < 0xe0 ? c - 0x81 : c - 0xc1);
- c2 = (c2 < 0x80 ? c2 - 0x40 : c2 - 0x41);
- c = (2 * c + (c2 < 0x5e ? 0 : 1) + 0x21);
- c2 = (c2 < 0x5e ? c2 : c2 - 0x5e) + 0x21;
- TRYMAP_DEC(jisx0208, **outbuf, c, c2);
- else return 2;
- }
- else if (c >= 0xf0 && c <= 0xf9) {
- if ((c2 >= 0x40 && c2 <= 0x7e) ||
- (c2 >= 0x80 && c2 <= 0xfc))
- OUT1(0xe000 + 188 * (c - 0xf0) +
- (c2 < 0x80 ? c2 - 0x40 : c2 - 0x41))
- else
- return 2;
- }
- else
- return 2;
- NEXT(2, 1)
- }
- return 0;
- }
- /*
- * EUC-JIS-2004 codec
- */
- ENCODER(euc_jis_2004)
- {
- while (inleft > 0) {
- ucs4_t c = IN1;
- DBCHAR code;
- Py_ssize_t insize;
- if (c < 0x80) {
- WRITE1(c)
- NEXT(1, 1)
- continue;
- }
- DECODE_SURROGATE(c)
- insize = GET_INSIZE(c);
- if (c <= 0xFFFF) {
- EMULATE_JISX0213_2000_ENCODE_BMP(code, c)
- else TRYMAP_ENC(jisx0213_bmp, code, c) {
- if (code == MULTIC) {
- if (inleft < 2) {
- if (flags & MBENC_FLUSH) {
- code = find_pairencmap(
- (ucs2_t)c, 0,
- jisx0213_pair_encmap,
- JISX0213_ENCPAIRS);
- if (code == DBCINV)
- return 1;
- }
- else
- return MBERR_TOOFEW;
- }
- else {
- code = find_pairencmap(
- (ucs2_t)c, (*inbuf)[1],
- jisx0213_pair_encmap,
- JISX0213_ENCPAIRS);
- if (code == DBCINV) {
- code = find_pairencmap(
- (ucs2_t)c, 0,
- jisx0213_pair_encmap,
- JISX0213_ENCPAIRS);
- if (code == DBCINV)
- return 1;
- } else
- insize = 2;
- }
- }
- }
- else TRYMAP_ENC(jisxcommon, code, c);
- else if (c >= 0xff61 && c <= 0xff9f) {
- /* JIS X 0201 half-width katakana */
- WRITE2(0x8e, c - 0xfec0)
- NEXT(1, 2)
- continue;
- }
- else if (c == 0xff3c)
- /* F/W REVERSE SOLIDUS (see NOTES) */
- code = 0x2140;
- else if (c == 0xff5e)
- /* F/W TILDE (see NOTES) */
- code = 0x2232;
- else
- return 1;
- }
- else if (c >> 16 == EMPBASE >> 16) {
- EMULATE_JISX0213_2000_ENCODE_EMP(code, c)
- else TRYMAP_ENC(jisx0213_emp, code, c & 0xffff);
- else return insize;
- }
- else
- return insize;
- if (code & 0x8000) {
- /* Codeset 2 */
- WRITE3(0x8f, code >> 8, (code & 0xFF) | 0x80)
- NEXT(insize, 3)
- } else {
- /* Codeset 1 */
- WRITE2((code >> 8) | 0x80, (code & 0xFF) | 0x80)
- NEXT(insize, 2)
- }
- }
- return 0;
- }
- DECODER(euc_jis_2004)
- {
- while (inleft > 0) {
- unsigned char c = IN1;
- ucs4_t code;
- REQUIRE_OUTBUF(1)
- if (c < 0x80) {
- OUT1(c)
- NEXT(1, 1)
- continue;
- }
- if (c == 0x8e) {
- /* JIS X 0201 half-width katakana */
- unsigned char c2;
- REQUIRE_INBUF(2)
- c2 = IN2;
- if (c2 >= 0xa1 && c2 <= 0xdf) {
- OUT1(0xfec0 + c2)
- NEXT(2, 1)
- }
- else
- return 2;
- }
- else if (c == 0x8f) {
- unsigned char c2, c3;
- REQUIRE_INBUF(3)
- c2 = IN2 ^ 0x80;
- c3 = IN3 ^ 0x80;
- /* JIS X 0213 Plane 2 or JIS X 0212 (see NOTES) */
- EMULATE_JISX0213_2000_DECODE_PLANE2(**outbuf, c2, c3)
- else TRYMAP_DEC(jisx0213_2_bmp, **outbuf, c2, c3) ;
- else TRYMAP_DEC(jisx0213_2_emp, code, c2, c3) {
- WRITEUCS4(EMPBASE | code)
- NEXT_IN(3)
- continue;
- }
- else TRYMAP_DEC(jisx0212, **outbuf, c2, c3) ;
- else return 3;
- NEXT(3, 1)
- }
- else {
- unsigned char c2;
- REQUIRE_INBUF(2)
- c ^= 0x80;
- c2 = IN2 ^ 0x80;
- /* JIS X 0213 Plane 1 */
- EMULATE_JISX0213_2000_DECODE_PLANE1(**outbuf, c, c2)
- else if (c == 0x21 && c2 == 0x40) **outbuf = 0xff3c;
- else if (c == 0x22 && c2 == 0x32) **outbuf = 0xff5e;
- else TRYMAP_DEC(jisx0208, **outbuf, c, c2);
- else TRYMAP_DEC(jisx0213_1_bmp, **outbuf, c, c2);
- else TRYMAP_DEC(jisx0213_1_emp, code, c, c2) {
- WRITEUCS4(EMPBASE | code)
- NEXT_IN(2)
- continue;
- }
- else TRYMAP_DEC(jisx0213_pair, code, c, c2) {
- WRITE2(code >> 16, code & 0xffff)
- NEXT(2, 2)
- continue;
- }
- else return 2;
- NEXT(2, 1)
- }
- }
- return 0;
- }
- /*
- * EUC-JP codec
- */
- ENCODER(euc_jp)
- {
- while (inleft > 0) {
- Py_UNICODE c = IN1;
- DBCHAR code;
- if (c < 0x80) {
- WRITE1((unsigned char)c)
- NEXT(1, 1)
- continue;
- }
- UCS4INVALID(c)
- TRYMAP_ENC(jisxcommon, code, c);
- else if (c >= 0xff61 && c <= 0xff9f) {
- /* JIS X 0201 half-width katakana */
- WRITE2(0x8e, c - 0xfec0)
- NEXT(1, 2)
- continue;
- }
- #ifndef STRICT_BUILD
- else if (c == 0xff3c) /* FULL-WIDTH REVERSE SOLIDUS */
- code = 0x2140;
- else if (c == 0xa5) { /* YEN SIGN */
- WRITE1(0x5c);
- NEXT(1, 1)
- continue;
- } else if (c == 0x203e) { /* OVERLINE */
- WRITE1(0x7e);
- NEXT(1, 1)
- continue;
- }
- #endif
- else
- return 1;
- if (code & 0x8000) {
- /* JIS X 0212 */
- WRITE3(0x8f, code >> 8, (code & 0xFF) | 0x80)
- NEXT(1, 3)
- } else {
- /* JIS X 0208 */
- WRITE2((code >> 8) | 0x80, (code & 0xFF) | 0x80)
- NEXT(1, 2)
- }
- }
- return 0;
- }
- DECODER(euc_jp)
- {
- while (inleft > 0) {
- unsigned char c = IN1;
- REQUIRE_OUTBUF(1)
- if (c < 0x80) {
- OUT1(c)
- NEXT(1, 1)
- continue;
- }
- if (c == 0x8e) {
- /* JIS X 0201 half-width katakana */
- unsigned char c2;
- REQUIRE_INBUF(2)
- c2 = IN2;
- if (c2 >= 0xa1 && c2 <= 0xdf) {
- OUT1(0xfec0 + c2)
- NEXT(2, 1)
- }
- else
- return 2;
- }
- else if (c == 0x8f) {
- unsigned char c2, c3;
- REQUIRE_INBUF(3)
- c2 = IN2;
- c3 = IN3;
- /* JIS X 0212 */
- TRYMAP_DEC(jisx0212, **outbuf, c2 ^ 0x80, c3 ^ 0x80) {
- NEXT(3, 1)
- }
- else
- return 3;
- }
- else {
- unsigned char c2;
- REQUIRE_INBUF(2)
- c2 = IN2;
- /* JIS X 0208 */
- #ifndef STRICT_BUILD
- if (c == 0xa1 && c2 == 0xc0)
- /* FULL-WIDTH REVERSE SOLIDUS */
- **outbuf = 0xff3c;
- else
- #endif
- TRYMAP_DEC(jisx0208, **outbuf,
- c ^ 0x80, c2 ^ 0x80) ;
- else return 2;
- NEXT(2, 1)
- }
- }
- return 0;
- }
- /*
- * SHIFT_JIS codec
- */
- ENCODER(shift_jis)
- {
- while (inleft > 0) {
- Py_UNICODE c = IN1;
- DBCHAR code;
- unsigned char c1, c2;
- #ifdef STRICT_BUILD
- JISX0201_R_ENCODE(c, code)
- #else
- if (c < 0x80) code = c;
- else if (c == 0x00a5) code = 0x5c; /* YEN SIGN */
- else if (c == 0x203e) code = 0x7e; /* OVERLINE */
- #endif
- else JISX0201_K_ENCODE(c, code)
- else UCS4INVALID(c)
- else code = NOCHAR;
- if (code < 0x80 || (code >= 0xa1 && code <= 0xdf)) {
- REQUIRE_OUTBUF(1)
- OUT1((unsigned char)code)
- NEXT(1, 1)
- continue;
- }
- REQUIRE_OUTBUF(2)
- if (code == NOCHAR) {
- TRYMAP_ENC(jisxcommon, code, c);
- #ifndef STRICT_BUILD
- else if (c == 0xff3c)
- code = 0x2140; /* FULL-WIDTH REVERSE SOLIDUS */
- #endif
- else
- return 1;
- if (code & 0x8000) /* MSB set: JIS X 0212 */
- return 1;
- }
- c1 = code >> 8;
- c2 = code & 0xff;
- c2 = (((c1 - 0x21) & 1) ? 0x5e : 0) + (c2 - 0x21);
- c1 = (c1 - 0x21) >> 1;
- OUT1(c1 < 0x1f ? c1 + 0x81 : c1 + 0xc1)
- OUT2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41)
- NEXT(1, 2)
- }
- return 0;
- }
- DECODER(shift_jis)
- {
- while (inleft > 0) {
- unsigned char c = IN1;
- REQUIRE_OUTBUF(1)
- #ifdef STRICT_BUILD
- JISX0201_R_DECODE(c, **outbuf)
- #else
- if (c < 0x80) **outbuf = c;
- #endif
- else JISX0201_K_DECODE(c, **outbuf)
- else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)){
- unsigned char c1, c2;
- REQUIRE_INBUF(2)
- c2 = IN2;
- if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
- return 2;
- c1 = (c < 0xe0 ? c - 0x81 : c - 0xc1);
- c2 = (c2 < 0x80 ? c2 - 0x40 : c2 - 0x41);
- c1 = (2 * c1 + (c2 < 0x5e ? 0 : 1) + 0x21);
- c2 = (c2 < 0x5e ? c2 : c2 - 0x5e) + 0x21;
- #ifndef STRICT_BUILD
- if (c1 == 0x21 && c2 == 0x40) {
- /* FULL-WIDTH REVERSE SOLIDUS */
- OUT1(0xff3c)
- NEXT(2, 1)
- continue;
- }
- #endif
- TRYMAP_DEC(jisx0208, **outbuf, c1, c2) {
- NEXT(2, 1)
- continue;
- }
- else
- return 2;
- }
- else
- return 2;
- NEXT(1, 1) /* JIS X 0201 */
- }
- return 0;
- }
- /*
- * SHIFT_JIS-2004 codec
- */
- ENCODER(shift_jis_2004)
- {
- while (inleft > 0) {
- ucs4_t c = IN1;
- DBCHAR code = NOCHAR;
- int c1, c2;
- Py_ssize_t insize;
- JISX0201_ENCODE(c, code)
- else DECODE_SURROGATE(c)
- if (code < 0x80 || (code >= 0xa1 && code <= 0xdf)) {
- WRITE1((unsigned char)code)
- NEXT(1, 1)
- continue;
- }
- REQUIRE_OUTBUF(2)
- insize = GET_INSIZE(c);
- if (code == NOCHAR) {
- if (c <= 0xffff) {
- EMULATE_JISX0213_2000_ENCODE_BMP(code, c)
- else TRYMAP_ENC(jisx0213_bmp, code, c) {
- if (code == MULTIC) {
- if (inleft < 2) {
- if (flags & MBENC_FLUSH) {
- code = find_pairencmap
- ((ucs2_t)c, 0,
- jisx0213_pair_encmap,
- JISX0213_ENCPAIRS);
- if (code == DBCINV)
- return 1;
- }
- else
- return MBERR_TOOFEW;
- }
- else {
- code = find_pairencmap(
- (ucs2_t)c, IN2,
- jisx0213_pair_encmap,
- JISX0213_ENCPAIRS);
- if (code == DBCINV) {
- code = find_pairencmap(
- (ucs2_t)c, 0,
- jisx0213_pair_encmap,
- JISX0213_ENCPAIRS);
- if (code == DBCINV)
- return 1;
- }
- else
- insize = 2;
- }
- }
- }
- else TRYMAP_ENC(jisxcommon, code, c) {
- /* abandon JIS X 0212 codes */
- if (code & 0x8000)
- return 1;
- }
- else return 1;
- }
- else if (c >> 16 == EMPBASE >> 16) {
- EMULATE_JISX0213_2000_ENCODE_EMP(code, c)
- else TRYMAP_ENC(jisx0213_emp, code, c&0xffff);
- else return insize;
- }
- else
- return insize;
- }
- c1 = code >> 8;
- c2 = (code & 0xff) - 0x21;
- if (c1 & 0x80) { /* Plane 2 */
- if (c1 >= 0xee) c1 -= 0x87;
- else if (c1 >= 0xac || c1 == 0xa8) c1 -= 0x49;
- else c1 -= 0x43;
- }
- else /* Plane 1 */
- c1 -= 0x21;
- if (c1 & 1) c2 += 0x5e;
- c1 >>= 1;
- OUT1(c1 + (c1 < 0x1f ? 0x81 : 0xc1))
- OUT2(c2 + (c2 < 0x3f ? 0x40 : 0x41))
- NEXT(insize, 2)
- }
- return 0;
- }
- DECODER(shift_jis_2004)
- {
- while (inleft > 0) {
- unsigned char c = IN1;
- REQUIRE_OUTBUF(1)
- JISX0201_DECODE(c, **outbuf)
- else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xfc)){
- unsigned char c1, c2;
- ucs4_t code;
- REQUIRE_INBUF(2)
- c2 = IN2;
- if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
- return 2;
- c1 = (c < 0xe0 ? c - 0x81 : c - 0xc1);
- c2 = (c2 < 0x80 ? c2 - 0x40 : c2 - 0x41);
- c1 = (2 * c1 + (c2 < 0x5e ? 0 : 1));
- c2 = (c2 < 0x5e ? c2 : c2 - 0x5e) + 0x21;
- if (c1 < 0x5e) { /* Plane 1 */
- c1 += 0x21;
- EMULATE_JISX0213_2000_DECODE_PLANE1(**outbuf,
- c1, c2)
- else TRYMAP_DEC(jisx0208, **outbuf, c1, c2) {
- NEXT_OUT(1)
- }
- else TRYMAP_DEC(jisx0213_1_bmp, **outbuf,
- c1, c2) {
- NEXT_OUT(1)
- }
- else TRYMAP_DEC(jisx0213_1_emp, code, c1, c2) {
- WRITEUCS4(EMPBASE | code)
- }
- else TRYMAP_DEC(jisx0213_pair, code, c1, c2) {
- WRITE2(code >> 16, code & 0xffff)
- NEXT_OUT(2)
- }
- else
- return 2;
- NEXT_IN(2)
- }
- else { /* Plane 2 */
- if (c1 >= 0x67) c1 += 0x07;
- else if (c1 >= 0x63 || c1 == 0x5f) c1 -= 0x37;
- else c1 -= 0x3d;
- EMULATE_JISX0213_2000_DECODE_PLANE2(**outbuf,
- c1, c2)
- else TRYMAP_DEC(jisx0213_2_bmp, **outbuf,
- c1, c2) ;
- else TRYMAP_DEC(jisx0213_2_emp, code, c1, c2) {
- WRITEUCS4(EMPBASE | code)
- NEXT_IN(2)
- continue;
- }
- else
- return 2;
- NEXT(2, 1)
- }
- continue;
- }
- else
- return 2;
- NEXT(1, 1) /* JIS X 0201 */
- }
- return 0;
- }
- BEGIN_MAPPINGS_LIST
- MAPPING_DECONLY(jisx0208)
- MAPPING_DECONLY(jisx0212)
- MAPPING_ENCONLY(jisxcommon)
- MAPPING_DECONLY(jisx0213_1_bmp)
- MAPPING_DECONLY(jisx0213_2_bmp)
- MAPPING_ENCONLY(jisx0213_bmp)
- MAPPING_DECONLY(jisx0213_1_emp)
- MAPPING_DECONLY(jisx0213_2_emp)
- MAPPING_ENCONLY(jisx0213_emp)
- MAPPING_ENCDEC(jisx0213_pair)
- MAPPING_ENCDEC(cp932ext)
- END_MAPPINGS_LIST
- BEGIN_CODECS_LIST
- CODEC_STATELESS(shift_jis)
- CODEC_STATELESS(cp932)
- CODEC_STATELESS(euc_jp)
- CODEC_STATELESS(shift_jis_2004)
- CODEC_STATELESS(euc_jis_2004)
- { "euc_jisx0213", (void *)2000, NULL, _STATELESS_METHODS(euc_jis_2004) },
- { "shift_jisx0213", (void *)2000, NULL, _STATELESS_METHODS(shift_jis_2004) },
- END_CODECS_LIST
- I_AM_A_MODULE_FOR(jp)