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_codecs_jp.c
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765 lines (671 loc) · 20.1 KB
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/*
* _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 (*inpos < inlen) {
Py_UCS4 c = INCHAR1;
DBCHAR code;
unsigned char c1, c2;
if (c <= 0x80) {
WRITEBYTE1((unsigned char)c);
NEXT(1, 1);
continue;
}
else if (c >= 0xff61 && c <= 0xff9f) {
WRITEBYTE1(c - 0xfec0);
NEXT(1, 1);
continue;
}
else if (c >= 0xf8f0 && c <= 0xf8f3) {
/* Windows compatibility */
REQUIRE_OUTBUF(1);
if (c == 0xf8f0)
OUTBYTE1(0xa0);
else
OUTBYTE1(c - 0xf8f1 + 0xfd);
NEXT(1, 1);
continue;
}
if (c > 0xFFFF)
return 1;
REQUIRE_OUTBUF(2);
if (TRYMAP_ENC(cp932ext, code, c)) {
OUTBYTE1(code >> 8);
OUTBYTE2(code & 0xff);
}
else if (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;
OUTBYTE1(c1 < 0x1f ? c1 + 0x81 : c1 + 0xc1);
OUTBYTE2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41);
}
else if (c >= 0xe000 && c < 0xe758) {
/* User-defined area */
c1 = (Py_UCS4)(c - 0xe000) / 188;
c2 = (Py_UCS4)(c - 0xe000) % 188;
OUTBYTE1(c1 + 0xf0);
OUTBYTE2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41);
}
else
return 1;
NEXT(1, 2);
}
return 0;
}
DECODER(cp932)
{
while (inleft > 0) {
unsigned char c = INBYTE1, c2;
Py_UCS4 decoded;
if (c <= 0x80) {
OUTCHAR(c);
NEXT_IN(1);
continue;
}
else if (c >= 0xa0 && c <= 0xdf) {
if (c == 0xa0)
OUTCHAR(0xf8f0); /* half-width katakana */
else
OUTCHAR(0xfec0 + c);
NEXT_IN(1);
continue;
}
else if (c >= 0xfd/* && c <= 0xff*/) {
/* Windows compatibility */
OUTCHAR(0xf8f1 - 0xfd + c);
NEXT_IN(1);
continue;
}
REQUIRE_INBUF(2);
c2 = INBYTE2;
if (TRYMAP_DEC(cp932ext, decoded, c, c2))
OUTCHAR(decoded);
else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)){
if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
return 1;
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;
if (TRYMAP_DEC(jisx0208, decoded, c, c2))
OUTCHAR(decoded);
else
return 1;
}
else if (c >= 0xf0 && c <= 0xf9) {
if ((c2 >= 0x40 && c2 <= 0x7e) ||
(c2 >= 0x80 && c2 <= 0xfc))
OUTCHAR(0xe000 + 188 * (c - 0xf0) +
(c2 < 0x80 ? c2 - 0x40 : c2 - 0x41));
else
return 1;
}
else
return 1;
NEXT_IN(2);
}
return 0;
}
/*
* EUC-JIS-2004 codec
*/
ENCODER(euc_jis_2004)
{
while (*inpos < inlen) {
Py_UCS4 c = INCHAR1;
DBCHAR code;
Py_ssize_t insize;
if (c < 0x80) {
WRITEBYTE1(c);
NEXT(1, 1);
continue;
}
insize = 1;
if (c <= 0xFFFF) {
EMULATE_JISX0213_2000_ENCODE_BMP(codec->config, code, c)
else if (TRYMAP_ENC(jisx0213_bmp, code, c)) {
if (code == MULTIC) {
if (inlen - *inpos < 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 {
Py_UCS4 c2 = INCHAR2;
code = find_pairencmap(
(ucs2_t)c, c2,
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 if (TRYMAP_ENC(jisxcommon, code, c))
;
else if (c >= 0xff61 && c <= 0xff9f) {
/* JIS X 0201 half-width katakana */
WRITEBYTE2(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(codec->config, code, c)
else if (TRYMAP_ENC(jisx0213_emp, code, c & 0xffff))
;
else
return insize;
}
else
return insize;
if (code & 0x8000) {
/* Codeset 2 */
WRITEBYTE3(0x8f, code >> 8, (code & 0xFF) | 0x80);
NEXT(insize, 3);
} else {
/* Codeset 1 */
WRITEBYTE2((code >> 8) | 0x80, (code & 0xFF) | 0x80);
NEXT(insize, 2);
}
}
return 0;
}
DECODER(euc_jis_2004)
{
while (inleft > 0) {
unsigned char c = INBYTE1;
Py_UCS4 code, decoded;
if (c < 0x80) {
OUTCHAR(c);
NEXT_IN(1);
continue;
}
if (c == 0x8e) {
/* JIS X 0201 half-width katakana */
unsigned char c2;
REQUIRE_INBUF(2);
c2 = INBYTE2;
if (c2 >= 0xa1 && c2 <= 0xdf) {
OUTCHAR(0xfec0 + c2);
NEXT_IN(2);
}
else
return 1;
}
else if (c == 0x8f) {
unsigned char c2, c3;
REQUIRE_INBUF(3);
c2 = INBYTE2 ^ 0x80;
c3 = INBYTE3 ^ 0x80;
/* JIS X 0213 Plane 2 or JIS X 0212 (see NOTES) */
EMULATE_JISX0213_2000_DECODE_PLANE2(codec->config, writer, c2, c3)
else if (TRYMAP_DEC(jisx0213_2_bmp, decoded, c2, c3))
OUTCHAR(decoded);
else if (TRYMAP_DEC(jisx0213_2_emp, code, c2, c3)) {
OUTCHAR(EMPBASE | code);
NEXT_IN(3);
continue;
}
else if (TRYMAP_DEC(jisx0212, decoded, c2, c3))
OUTCHAR(decoded);
else
return 1;
NEXT_IN(3);
}
else {
unsigned char c2;
REQUIRE_INBUF(2);
c ^= 0x80;
c2 = INBYTE2 ^ 0x80;
/* JIS X 0213 Plane 1 */
EMULATE_JISX0213_2000_DECODE_PLANE1(codec->config, writer, c, c2)
else if (c == 0x21 && c2 == 0x40)
OUTCHAR(0xff3c);
else if (c == 0x22 && c2 == 0x32)
OUTCHAR(0xff5e);
else if (TRYMAP_DEC(jisx0208, decoded, c, c2))
OUTCHAR(decoded);
else if (TRYMAP_DEC(jisx0213_1_bmp, decoded, c, c2))
OUTCHAR(decoded);
else if (TRYMAP_DEC(jisx0213_1_emp, code, c, c2)) {
OUTCHAR(EMPBASE | code);
NEXT_IN(2);
continue;
}
else if (TRYMAP_DEC(jisx0213_pair, code, c, c2)) {
OUTCHAR2(code >> 16, code & 0xffff);
NEXT_IN(2);
continue;
}
else
return 1;
NEXT_IN(2);
}
}
return 0;
}
/*
* EUC-JP codec
*/
ENCODER(euc_jp)
{
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;
if (TRYMAP_ENC(jisxcommon, code, c))
;
else if (c >= 0xff61 && c <= 0xff9f) {
/* JIS X 0201 half-width katakana */
WRITEBYTE2(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 */
WRITEBYTE1(0x5c);
NEXT(1, 1);
continue;
} else if (c == 0x203e) { /* OVERLINE */
WRITEBYTE1(0x7e);
NEXT(1, 1);
continue;
}
#endif
else
return 1;
if (code & 0x8000) {
/* JIS X 0212 */
WRITEBYTE3(0x8f, code >> 8, (code & 0xFF) | 0x80);
NEXT(1, 3);
} else {
/* JIS X 0208 */
WRITEBYTE2((code >> 8) | 0x80, (code & 0xFF) | 0x80);
NEXT(1, 2);
}
}
return 0;
}
DECODER(euc_jp)
{
while (inleft > 0) {
unsigned char c = INBYTE1;
Py_UCS4 decoded;
if (c < 0x80) {
OUTCHAR(c);
NEXT_IN(1);
continue;
}
if (c == 0x8e) {
/* JIS X 0201 half-width katakana */
unsigned char c2;
REQUIRE_INBUF(2);
c2 = INBYTE2;
if (c2 >= 0xa1 && c2 <= 0xdf) {
OUTCHAR(0xfec0 + c2);
NEXT_IN(2);
}
else
return 1;
}
else if (c == 0x8f) {
unsigned char c2, c3;
REQUIRE_INBUF(3);
c2 = INBYTE2;
c3 = INBYTE3;
/* JIS X 0212 */
if (TRYMAP_DEC(jisx0212, decoded, c2 ^ 0x80, c3 ^ 0x80)) {
OUTCHAR(decoded);
NEXT_IN(3);
}
else
return 1;
}
else {
unsigned char c2;
REQUIRE_INBUF(2);
c2 = INBYTE2;
/* JIS X 0208 */
#ifndef STRICT_BUILD
if (c == 0xa1 && c2 == 0xc0)
/* FULL-WIDTH REVERSE SOLIDUS */
OUTCHAR(0xff3c);
else
#endif
if (TRYMAP_DEC(jisx0208, decoded, c ^ 0x80, c2 ^ 0x80))
OUTCHAR(decoded);
else
return 1;
NEXT_IN(2);
}
}
return 0;
}
/*
* SHIFT_JIS codec
*/
ENCODER(shift_jis)
{
while (*inpos < inlen) {
Py_UCS4 c = INCHAR1;
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 if (c > 0xFFFF)
return 1;
else
code = NOCHAR;
if (code < 0x80 || (code >= 0xa1 && code <= 0xdf)) {
REQUIRE_OUTBUF(1);
OUTBYTE1((unsigned char)code);
NEXT(1, 1);
continue;
}
REQUIRE_OUTBUF(2);
if (code == NOCHAR) {
if (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;
OUTBYTE1(c1 < 0x1f ? c1 + 0x81 : c1 + 0xc1);
OUTBYTE2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41);
NEXT(1, 2);
}
return 0;
}
DECODER(shift_jis)
{
while (inleft > 0) {
unsigned char c = INBYTE1;
Py_UCS4 decoded;
#ifdef STRICT_BUILD
JISX0201_R_DECODE(c, writer)
#else
if (c < 0x80)
OUTCHAR(c);
#endif
else JISX0201_K_DECODE(c, writer)
else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)){
unsigned char c1, c2;
REQUIRE_INBUF(2);
c2 = INBYTE2;
if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
return 1;
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 */
OUTCHAR(0xff3c);
NEXT_IN(2);
continue;
}
#endif
if (TRYMAP_DEC(jisx0208, decoded, c1, c2)) {
OUTCHAR(decoded);
NEXT_IN(2);
continue;
}
else
return 1;
}
else
return 1;
NEXT_IN(1); /* JIS X 0201 */
}
return 0;
}
/*
* SHIFT_JIS-2004 codec
*/
ENCODER(shift_jis_2004)
{
while (*inpos < inlen) {
Py_UCS4 c = INCHAR1;
DBCHAR code = NOCHAR;
int c1, c2;
Py_ssize_t insize;
JISX0201_ENCODE(c, code)
if (code < 0x80 || (code >= 0xa1 && code <= 0xdf)) {
WRITEBYTE1((unsigned char)code);
NEXT(1, 1);
continue;
}
REQUIRE_OUTBUF(2);
insize = 1;
if (code == NOCHAR) {
if (c <= 0xffff) {
EMULATE_JISX0213_2000_ENCODE_BMP(codec->config, code, c)
else if (TRYMAP_ENC(jisx0213_bmp, code, c)) {
if (code == MULTIC) {
if (inlen - *inpos < 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 {
Py_UCS4 ch2 = INCHAR2;
code = find_pairencmap(
(ucs2_t)c, ch2,
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 if (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(codec->config, code, c)
else if (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;
OUTBYTE1(c1 + (c1 < 0x1f ? 0x81 : 0xc1));
OUTBYTE2(c2 + (c2 < 0x3f ? 0x40 : 0x41));
NEXT(insize, 2);
}
return 0;
}
DECODER(shift_jis_2004)
{
while (inleft > 0) {
unsigned char c = INBYTE1;
JISX0201_DECODE(c, writer)
else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xfc)){
unsigned char c1, c2;
Py_UCS4 code, decoded;
REQUIRE_INBUF(2);
c2 = INBYTE2;
if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
return 1;
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(codec->config, writer,
c1, c2)
else if (TRYMAP_DEC(jisx0208, decoded, c1, c2))
OUTCHAR(decoded);
else if (TRYMAP_DEC(jisx0213_1_bmp, decoded, c1, c2))
OUTCHAR(decoded);
else if (TRYMAP_DEC(jisx0213_1_emp, code, c1, c2))
OUTCHAR(EMPBASE | code);
else if (TRYMAP_DEC(jisx0213_pair, code, c1, c2))
OUTCHAR2(code >> 16, code & 0xffff);
else
return 1;
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(codec->config, writer,
c1, c2)
else if (TRYMAP_DEC(jisx0213_2_bmp, decoded, c1, c2))
OUTCHAR(decoded);
else if (TRYMAP_DEC(jisx0213_2_emp, code, c1, c2)) {
OUTCHAR(EMPBASE | code);
NEXT_IN(2);
continue;
}
else
return 1;
NEXT_IN(2);
}
continue;
}
else
return 1;
NEXT_IN(1); /* JIS X 0201 */
}
return 0;
}
BEGIN_MAPPINGS_LIST(11)
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
#define CODEC_CUSTOM(NAME, N, METH) \
NEXT_CODEC = (MultibyteCodec){NAME, (void *)N, NULL, _STATELESS_METHODS(METH)};
BEGIN_CODECS_LIST(7)
CODEC_STATELESS(shift_jis)
CODEC_STATELESS(cp932)
CODEC_STATELESS(euc_jp)
CODEC_STATELESS(shift_jis_2004)
CODEC_STATELESS(euc_jis_2004)
CODEC_CUSTOM("euc_jisx0213", 2000, euc_jis_2004)
CODEC_CUSTOM("shift_jisx0213", 2000, shift_jis_2004)
END_CODECS_LIST
#undef CODEC_CUSTOM
I_AM_A_MODULE_FOR(jp)