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