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|
/*
* _codecs_kr.c: Codecs collection for Korean encodings
*
* Written by Hye-Shik Chang <perky@FreeBSD.org>
*/
#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);
if (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 code points 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;
Py_UCS4 decoded;
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 if (TRYMAP_DEC(ksx1001, decoded, c ^ 0x80, INBYTE2 ^ 0x80)) {
OUTCHAR(decoded);
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);
if (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;
Py_UCS4 decoded;
if (c < 0x80) {
OUTCHAR(c);
NEXT_IN(1);
continue;
}
REQUIRE_INBUF(2);
if (TRYMAP_DEC(ksx1001, decoded, c ^ 0x80, INBYTE2 ^ 0x80))
OUTCHAR(decoded);
else if (TRYMAP_DEC(cp949ext, decoded, c, INBYTE2))
OUTCHAR(decoded);
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 if (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;
Py_UCS4 decoded;
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;
if (TRYMAP_DEC(ksx1001, decoded, t1, t2)) {
OUTCHAR(decoded);
NEXT_IN(2);
}
else {
return 1;
}
}
}
}
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)
|
