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