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/*
* _cp932.c: the CP932 codec
*
* Written by Hye-Shik Chang <perky@FreeBSD.org>
* $CJKCodecs: _cp932.c,v 1.2 2003/12/31 05:46:55 perky Exp $
*/
#include "codeccommon.h"
ENCMAP(jisxcommon)
ENCMAP(cp932ext)
DECMAP(jisx0208)
DECMAP(cp932ext)
ENCODER(cp932)
{
while (inleft > 0) {
Py_UNICODE c = IN1;
DBCHAR code;
unsigned char c1, c2;
if (c <= 0x80) {
WRITE1((unsigned char)c)
NEXT(1, 1)
continue;
} else if (c >= 0xff61 && c <= 0xff9f) {
WRITE1(c - 0xfec0)
NEXT(1, 1)
continue;
} else if (c >= 0xf8f0 && c <= 0xf8f3) {
/* Windows compatability */
RESERVE_OUTBUF(1)
if (c == 0xf8f0)
OUT1(0xa0)
else
OUT1(c - 0xfef1 + 0xfd)
NEXT(1, 1)
continue;
}
UCS4INVALID(c)
RESERVE_OUTBUF(2)
TRYMAP_ENC(cp932ext, code, c) {
OUT1(code >> 8)
OUT2(code & 0xff)
} else TRYMAP_ENC(jisxcommon, code, c) {
if (code & 0x8000) /* MSB set: JIS X 0212 */
return 1;
/* JIS X 0208 */
c1 = code >> 8;
c2 = code & 0xff;
c2 = (((c1 - 0x21) & 1) ? 0x5e : 0) + (c2 - 0x21);
c1 = (c1 - 0x21) >> 1;
OUT1(c1 < 0x1f ? c1 + 0x81 : c1 + 0xc1)
OUT2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41)
} else if (c >= 0xe000 && c < 0xe758) {
/* User-defined area */
c1 = (Py_UNICODE)(c - 0xe000) / 188;
c2 = (Py_UNICODE)(c - 0xe000) % 188;
OUT1(c1 + 0xf0)
OUT2(c2 < 0x3f ? c2 + 0x40 : c2 + 0x41)
} else
return 1;
NEXT(1, 2)
}
return 0;
}
DECODER(cp932)
{
while (inleft > 0) {
unsigned char c = IN1, c2;
RESERVE_OUTBUF(1)
if (c <= 0x80) {
OUT1(c)
NEXT(1, 1)
continue;
} else if (c >= 0xa0 && c <= 0xdf) {
if (c == 0xa0)
OUT1(0xf8f0) /* half-width katakana */
else
OUT1(0xfec0 + c)
NEXT(1, 1)
continue;
} else if (c >= 0xfd/* && c <= 0xff*/) {
/* Windows compatibility */
OUT1(0xf8f1 - 0xfd + c)
NEXT(1, 1)
continue;
}
RESERVE_INBUF(2)
c2 = IN2;
TRYMAP_DEC(cp932ext, **outbuf, c, c2);
else if ((c >= 0x81 && c <= 0x9f) || (c >= 0xe0 && c <= 0xea)) {
if (c2 < 0x40 || (c2 > 0x7e && c2 < 0x80) || c2 > 0xfc)
return 2;
c = (c < 0xe0 ? c - 0x81 : c - 0xc1);
c2 = (c2 < 0x80 ? c2 - 0x40 : c2 - 0x41);
c = (2 * c + (c2 < 0x5e ? 0 : 1) + 0x21);
c2 = (c2 < 0x5e ? c2 : c2 - 0x5e) + 0x21;
TRYMAP_DEC(jisx0208, **outbuf, c, c2);
else return 2;
} else if (c >= 0xf0 && c <= 0xf9) {
if ((c2 >= 0x40 && c2 <= 0x7e) || (c2 >= 0x80 && c2 <= 0xfc))
OUT1(0xe000 + 188 * (c - 0xf0) +
(c2 < 0x80 ? c2 - 0x40 : c2 - 0x41))
else
return 2;
} else
return 2;
NEXT(2, 1)
}
return 0;
}
#include "codecentry.h"
BEGIN_CODEC_REGISTRY(cp932)
MAPOPEN(ja_JP)
IMPORTMAP_DEC(jisx0208)
IMPORTMAP_ENCDEC(cp932ext)
IMPORTMAP_ENC(jisxcommon)
MAPCLOSE()
END_CODEC_REGISTRY(cp932)
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