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/*
* _iso2022_kr.c: the ISO-2022-KR codec (RFC1557)
*
* Written by Hye-Shik Chang <perky@FreeBSD.org>
* $CJKCodecs: _iso2022_kr.c,v 1.3 2003/12/31 05:46:55 perky Exp $
*/
#define ISO2022_DESIGNATIONS \
CHARSET_ASCII, CHARSET_KSX1001
#include "codeccommon.h"
#include "iso2022common.h"
ENCMAP(cp949)
DECMAP(ksx1001)
#define HAVE_ENCODER_INIT
ENCODER_INIT(iso2022_kr)
{
STATE_CLEARFLAGS(state)
STATE_SETG0(state, CHARSET_ASCII)
STATE_SETG1(state, CHARSET_ASCII)
return 0;
}
#define HAVE_ENCODER_RESET
ENCODER_RESET(iso2022_kr)
{
if (STATE_GETFLAG(state, F_SHIFTED)) {
RESERVE_OUTBUF(1)
OUT1(SI)
NEXT_OUT(1)
STATE_CLEARFLAG(state, F_SHIFTED)
}
return 0;
}
ENCODER(iso2022_kr)
{
while (inleft > 0) {
Py_UNICODE c = **inbuf;
DBCHAR code;
if (c < 0x80) {
if (STATE_GETFLAG(state, F_SHIFTED)) {
WRITE2(SI, (unsigned char)c)
STATE_CLEARFLAG(state, F_SHIFTED)
NEXT(1, 2)
} else {
WRITE1((unsigned char)c)
NEXT(1, 1)
}
if (c == '\n')
STATE_CLEARFLAG(state, F_SHIFTED)
} else UCS4INVALID(c)
else {
if (STATE_GETG1(state) != CHARSET_KSX1001) {
WRITE4(ESC, '$', ')', 'C')
STATE_SETG1(state, CHARSET_KSX1001)
NEXT_OUT(4)
}
if (!STATE_GETFLAG(state, F_SHIFTED)) {
WRITE1(SO)
STATE_SETFLAG(state, F_SHIFTED)
NEXT_OUT(1)
}
TRYMAP_ENC(cp949, code, c) {
if (code & 0x8000) /* MSB set: CP949 */
return 1;
WRITE2(code >> 8, code & 0xff)
NEXT(1, 2)
} else
return 1;
}
}
return 0;
}
#define HAVE_DECODER_INIT
DECODER_INIT(iso2022_kr)
{
STATE_CLEARFLAGS(state)
STATE_SETG0(state, CHARSET_ASCII)
STATE_SETG1(state, CHARSET_ASCII)
return 0;
}
#define HAVE_DECODER_RESET
DECODER_RESET(iso2022_kr)
{
STATE_CLEARFLAG(state, F_SHIFTED)
return 0;
}
DECODER(iso2022_kr)
{
ISO2022_LOOP_BEGIN
unsigned char charset, c2;
ISO2022_GETCHARSET(charset, c)
if (charset & CHARSET_DOUBLEBYTE) {
/* all double byte character sets are in KS X 1001 here */
RESERVE_INBUF(2)
RESERVE_OUTBUF(1)
c2 = IN2;
if (c2 >= 0x80)
return 1;
TRYMAP_DEC(ksx1001, **outbuf, c, c2) {
NEXT(2, 1)
} else
return 2;
} else {
RESERVE_OUTBUF(1)
OUT1(c);
NEXT(1, 1)
}
ISO2022_LOOP_END
return 0;
}
#include "codecentry.h"
BEGIN_CODEC_REGISTRY(iso2022_kr)
MAPOPEN(ko_KR)
IMPORTMAP_DEC(ksx1001)
IMPORTMAP_ENC(cp949)
MAPCLOSE()
END_CODEC_REGISTRY(iso2022_kr)
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