mirror of https://github.com/python/cpython
443 lines
7.0 KiB
C
443 lines
7.0 KiB
C
/*
|
|
* _codecs_cn.c: Codecs collection for Mainland Chinese encodings
|
|
*
|
|
* Written by Hye-Shik Chang <perky@FreeBSD.org>
|
|
* $CJKCodecs: _codecs_cn.c,v 1.8 2004/07/07 14:59:26 perky Exp $
|
|
*/
|
|
|
|
#include "cjkcodecs.h"
|
|
#include "mappings_cn.h"
|
|
|
|
/**
|
|
* hz is predefined as 100 on AIX. So we undefine it to avoid
|
|
* conflict against hz codec's.
|
|
*/
|
|
#ifdef _AIX
|
|
#undef hz
|
|
#endif
|
|
|
|
#define GBK_PREDECODE(dc1, dc2, assi) \
|
|
if ((dc1) == 0xa1 && (dc2) == 0xaa) (assi) = 0x2014; \
|
|
else if ((dc1) == 0xa8 && (dc2) == 0x44) (assi) = 0x2015; \
|
|
else if ((dc1) == 0xa1 && (dc2) == 0xa4) (assi) = 0x00b7;
|
|
#define GBK_PREENCODE(code, assi) \
|
|
if ((code) == 0x2014) (assi) = 0xa1aa; \
|
|
else if ((code) == 0x2015) (assi) = 0xa844; \
|
|
else if ((code) == 0x00b7) (assi) = 0xa1a4;
|
|
|
|
/*
|
|
* GB2312 codec
|
|
*/
|
|
|
|
ENCODER(gb2312)
|
|
{
|
|
while (inleft > 0) {
|
|
Py_UNICODE c = IN1;
|
|
DBCHAR code;
|
|
|
|
if (c < 0x80) {
|
|
WRITE1((unsigned char)c)
|
|
NEXT(1, 1)
|
|
continue;
|
|
}
|
|
UCS4INVALID(c)
|
|
|
|
REQUIRE_OUTBUF(2)
|
|
TRYMAP_ENC(gbcommon, code, c);
|
|
else return 1;
|
|
|
|
if (code & 0x8000) /* MSB set: GBK */
|
|
return 1;
|
|
|
|
OUT1((code >> 8) | 0x80)
|
|
OUT2((code & 0xFF) | 0x80)
|
|
NEXT(1, 2)
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DECODER(gb2312)
|
|
{
|
|
while (inleft > 0) {
|
|
unsigned char c = **inbuf;
|
|
|
|
REQUIRE_OUTBUF(1)
|
|
|
|
if (c < 0x80) {
|
|
OUT1(c)
|
|
NEXT(1, 1)
|
|
continue;
|
|
}
|
|
|
|
REQUIRE_INBUF(2)
|
|
TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, IN2 ^ 0x80) {
|
|
NEXT(2, 1)
|
|
}
|
|
else return 2;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* GBK codec
|
|
*/
|
|
|
|
ENCODER(gbk)
|
|
{
|
|
while (inleft > 0) {
|
|
Py_UNICODE c = IN1;
|
|
DBCHAR code;
|
|
|
|
if (c < 0x80) {
|
|
WRITE1((unsigned char)c)
|
|
NEXT(1, 1)
|
|
continue;
|
|
}
|
|
UCS4INVALID(c)
|
|
|
|
REQUIRE_OUTBUF(2)
|
|
|
|
GBK_PREENCODE(c, code)
|
|
else TRYMAP_ENC(gbcommon, code, c);
|
|
else return 1;
|
|
|
|
OUT1((code >> 8) | 0x80)
|
|
if (code & 0x8000)
|
|
OUT2((code & 0xFF)) /* MSB set: GBK */
|
|
else
|
|
OUT2((code & 0xFF) | 0x80) /* MSB unset: GB2312 */
|
|
NEXT(1, 2)
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DECODER(gbk)
|
|
{
|
|
while (inleft > 0) {
|
|
unsigned char c = IN1;
|
|
|
|
REQUIRE_OUTBUF(1)
|
|
|
|
if (c < 0x80) {
|
|
OUT1(c)
|
|
NEXT(1, 1)
|
|
continue;
|
|
}
|
|
|
|
REQUIRE_INBUF(2)
|
|
|
|
GBK_PREDECODE(c, IN2, **outbuf)
|
|
else TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, IN2 ^ 0x80);
|
|
else TRYMAP_DEC(gbkext, **outbuf, c, IN2);
|
|
else return 2;
|
|
|
|
NEXT(2, 1)
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* GB18030 codec
|
|
*/
|
|
|
|
ENCODER(gb18030)
|
|
{
|
|
while (inleft > 0) {
|
|
ucs4_t c = IN1;
|
|
DBCHAR code;
|
|
|
|
if (c < 0x80) {
|
|
WRITE1(c)
|
|
NEXT(1, 1)
|
|
continue;
|
|
}
|
|
|
|
DECODE_SURROGATE(c)
|
|
if (c > 0x10FFFF)
|
|
#if Py_UNICODE_SIZE == 2
|
|
return 2; /* surrogates pair */
|
|
#else
|
|
return 1;
|
|
#endif
|
|
else if (c >= 0x10000) {
|
|
ucs4_t tc = c - 0x10000;
|
|
|
|
REQUIRE_OUTBUF(4)
|
|
|
|
OUT4((unsigned char)(tc % 10) + 0x30)
|
|
tc /= 10;
|
|
OUT3((unsigned char)(tc % 126) + 0x81)
|
|
tc /= 126;
|
|
OUT2((unsigned char)(tc % 10) + 0x30)
|
|
tc /= 10;
|
|
OUT1((unsigned char)(tc + 0x90))
|
|
|
|
#if Py_UNICODE_SIZE == 2
|
|
NEXT(2, 4) /* surrogates pair */
|
|
#else
|
|
NEXT(1, 4)
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
REQUIRE_OUTBUF(2)
|
|
|
|
GBK_PREENCODE(c, code)
|
|
else TRYMAP_ENC(gbcommon, code, c);
|
|
else TRYMAP_ENC(gb18030ext, code, c);
|
|
else {
|
|
const struct _gb18030_to_unibmp_ranges *utrrange;
|
|
|
|
REQUIRE_OUTBUF(4)
|
|
|
|
for (utrrange = gb18030_to_unibmp_ranges;
|
|
utrrange->first != 0;
|
|
utrrange++)
|
|
if (utrrange->first <= c &&
|
|
c <= utrrange->last) {
|
|
Py_UNICODE tc;
|
|
|
|
tc = c - utrrange->first +
|
|
utrrange->base;
|
|
|
|
OUT4((unsigned char)(tc % 10) + 0x30)
|
|
tc /= 10;
|
|
OUT3((unsigned char)(tc % 126) + 0x81)
|
|
tc /= 126;
|
|
OUT2((unsigned char)(tc % 10) + 0x30)
|
|
tc /= 10;
|
|
OUT1((unsigned char)tc + 0x81)
|
|
|
|
NEXT(1, 4)
|
|
break;
|
|
}
|
|
|
|
if (utrrange->first == 0) {
|
|
PyErr_SetString(PyExc_RuntimeError,
|
|
"unicode mapping invalid");
|
|
return 1;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
OUT1((code >> 8) | 0x80)
|
|
if (code & 0x8000)
|
|
OUT2((code & 0xFF)) /* MSB set: GBK or GB18030ext */
|
|
else
|
|
OUT2((code & 0xFF) | 0x80) /* MSB unset: GB2312 */
|
|
|
|
NEXT(1, 2)
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DECODER(gb18030)
|
|
{
|
|
while (inleft > 0) {
|
|
unsigned char c = IN1, c2;
|
|
|
|
REQUIRE_OUTBUF(1)
|
|
|
|
if (c < 0x80) {
|
|
OUT1(c)
|
|
NEXT(1, 1)
|
|
continue;
|
|
}
|
|
|
|
REQUIRE_INBUF(2)
|
|
|
|
c2 = IN2;
|
|
if (c2 >= 0x30 && c2 <= 0x39) { /* 4 bytes seq */
|
|
const struct _gb18030_to_unibmp_ranges *utr;
|
|
unsigned char c3, c4;
|
|
ucs4_t lseq;
|
|
|
|
REQUIRE_INBUF(4)
|
|
c3 = IN3;
|
|
c4 = IN4;
|
|
if (c < 0x81 || c3 < 0x81 || c4 < 0x30 || c4 > 0x39)
|
|
return 4;
|
|
c -= 0x81; c2 -= 0x30;
|
|
c3 -= 0x81; c4 -= 0x30;
|
|
|
|
if (c < 4) { /* U+0080 - U+FFFF */
|
|
lseq = ((ucs4_t)c * 10 + c2) * 1260 +
|
|
(ucs4_t)c3 * 10 + c4;
|
|
if (lseq < 39420) {
|
|
for (utr = gb18030_to_unibmp_ranges;
|
|
lseq >= (utr + 1)->base;
|
|
utr++) ;
|
|
OUT1(utr->first - utr->base + lseq)
|
|
NEXT(4, 1)
|
|
continue;
|
|
}
|
|
}
|
|
else if (c >= 15) { /* U+10000 - U+10FFFF */
|
|
lseq = 0x10000 + (((ucs4_t)c-15) * 10 + c2)
|
|
* 1260 + (ucs4_t)c3 * 10 + c4;
|
|
if (lseq <= 0x10FFFF) {
|
|
WRITEUCS4(lseq);
|
|
NEXT_IN(4)
|
|
continue;
|
|
}
|
|
}
|
|
return 4;
|
|
}
|
|
|
|
GBK_PREDECODE(c, c2, **outbuf)
|
|
else TRYMAP_DEC(gb2312, **outbuf, c ^ 0x80, c2 ^ 0x80);
|
|
else TRYMAP_DEC(gbkext, **outbuf, c, c2);
|
|
else TRYMAP_DEC(gb18030ext, **outbuf, c, c2);
|
|
else return 2;
|
|
|
|
NEXT(2, 1)
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* HZ codec
|
|
*/
|
|
|
|
ENCODER_INIT(hz)
|
|
{
|
|
state->i = 0;
|
|
return 0;
|
|
}
|
|
|
|
ENCODER_RESET(hz)
|
|
{
|
|
if (state->i != 0) {
|
|
WRITE2('~', '}')
|
|
state->i = 0;
|
|
NEXT_OUT(2)
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
ENCODER(hz)
|
|
{
|
|
while (inleft > 0) {
|
|
Py_UNICODE c = IN1;
|
|
DBCHAR code;
|
|
|
|
if (c < 0x80) {
|
|
if (state->i == 0) {
|
|
WRITE1((unsigned char)c)
|
|
NEXT(1, 1)
|
|
}
|
|
else {
|
|
WRITE3('~', '}', (unsigned char)c)
|
|
NEXT(1, 3)
|
|
state->i = 0;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
UCS4INVALID(c)
|
|
|
|
TRYMAP_ENC(gbcommon, code, c);
|
|
else return 1;
|
|
|
|
if (code & 0x8000) /* MSB set: GBK */
|
|
return 1;
|
|
|
|
if (state->i == 0) {
|
|
WRITE4('~', '{', code >> 8, code & 0xff)
|
|
NEXT(1, 4)
|
|
state->i = 1;
|
|
}
|
|
else {
|
|
WRITE2(code >> 8, code & 0xff)
|
|
NEXT(1, 2)
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DECODER_INIT(hz)
|
|
{
|
|
state->i = 0;
|
|
return 0;
|
|
}
|
|
|
|
DECODER_RESET(hz)
|
|
{
|
|
state->i = 0;
|
|
return 0;
|
|
}
|
|
|
|
DECODER(hz)
|
|
{
|
|
while (inleft > 0) {
|
|
unsigned char c = IN1;
|
|
|
|
if (c == '~') {
|
|
unsigned char c2 = IN2;
|
|
|
|
REQUIRE_INBUF(2)
|
|
if (c2 == '~') {
|
|
WRITE1('~')
|
|
NEXT(2, 1)
|
|
continue;
|
|
}
|
|
else if (c2 == '{' && state->i == 0)
|
|
state->i = 1; /* set GB */
|
|
else if (c2 == '}' && state->i == 1)
|
|
state->i = 0; /* set ASCII */
|
|
else if (c2 == '\n')
|
|
; /* line-continuation */
|
|
else
|
|
return 2;
|
|
NEXT(2, 0);
|
|
continue;
|
|
}
|
|
|
|
if (c & 0x80)
|
|
return 1;
|
|
|
|
if (state->i == 0) { /* ASCII mode */
|
|
WRITE1(c)
|
|
NEXT(1, 1)
|
|
}
|
|
else { /* GB mode */
|
|
REQUIRE_INBUF(2)
|
|
REQUIRE_OUTBUF(1)
|
|
TRYMAP_DEC(gb2312, **outbuf, c, IN2) {
|
|
NEXT(2, 1)
|
|
}
|
|
else
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
BEGIN_MAPPINGS_LIST
|
|
MAPPING_DECONLY(gb2312)
|
|
MAPPING_DECONLY(gbkext)
|
|
MAPPING_ENCONLY(gbcommon)
|
|
MAPPING_ENCDEC(gb18030ext)
|
|
END_MAPPINGS_LIST
|
|
|
|
BEGIN_CODECS_LIST
|
|
CODEC_STATELESS(gb2312)
|
|
CODEC_STATELESS(gbk)
|
|
CODEC_STATELESS(gb18030)
|
|
CODEC_STATEFUL(hz)
|
|
END_CODECS_LIST
|
|
|
|
I_AM_A_MODULE_FOR(cn)
|