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/*
* _gbk.c: the GBK codec
*
* Written by Hye-Shik Chang <perky@FreeBSD.org>
* $CJKCodecs: _gbk.c,v 1.2 2003/12/31 05:46:55 perky Exp $
*/
#include "codeccommon.h"
#include "tweak_gbk.h"
ENCMAP(gbcommon)
DECMAP(gb2312)
DECMAP(gbkext)
ENCODER(gbk)
{
while (inleft > 0) {
Py_UNICODE c = IN1;
DBCHAR code;
if (c < 0x80) {
WRITE1(c)
NEXT(1, 1)
continue;
}
UCS4INVALID(c)
RESERVE_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;
RESERVE_OUTBUF(1)
if (c < 0x80) {
OUT1(c)
NEXT(1, 1)
continue;
}
RESERVE_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;
}
#include "codecentry.h"
BEGIN_CODEC_REGISTRY(gbk)
MAPOPEN(zh_CN)
IMPORTMAP_DEC(gb2312)
IMPORTMAP_DEC(gbkext)
IMPORTMAP_ENC(gbcommon)
MAPCLOSE()
END_CODEC_REGISTRY(gbk)
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