| /* |
| * GBK, CP936 |
| */ |
| |
| static int |
| ces_gbk_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) |
| { |
| unsigned char c = *s; |
| |
| /* Code set 0 (ASCII or GB 1988-89) */ |
| if (c < 0x80) |
| return ascii_mbtowc(conv,pwc,s,n); |
| /* Code set 1 (GBK) */ |
| if (c >= 0x81 && c < 0xff) { |
| if (n < 2) |
| return RET_TOOFEW(0); |
| return gbk_mbtowc(conv,pwc,s,2); |
| } |
| return RET_ILSEQ; |
| } |
| |
| static int |
| ces_gbk_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) |
| { |
| unsigned char buf[2]; |
| int ret; |
| |
| /* Code set 0 (ASCII or GB 1988-89) */ |
| ret = ascii_wctomb(conv,r,wc,n); |
| if (ret != RET_ILSEQ) |
| return ret; |
| |
| /* Code set 1 (GBK) */ |
| ret = gbk_wctomb(conv,buf,wc,2); |
| if (ret != RET_ILSEQ) { |
| if (ret != 2) abort(); |
| if (n < 2) |
| return RET_TOOSMALL; |
| r[0] = buf[0]; |
| r[1] = buf[1]; |
| return 2; |
| } |
| |
| return RET_ILSEQ; |
| } |