1 /*
2 * Copyright (C) 1999-2001, 2005 Free Software Foundation, Inc.
3 * This file is part of the GNU LIBICONV Library.
4 *
5 * The GNU LIBICONV Library is free software; you can redistribute it
6 * and/or modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
9 *
10 * The GNU LIBICONV Library is distributed in the hope that it will be
11 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
17 * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
18 * Fifth Floor, Boston, MA 02110-1301, USA.
19 */
20
21 /*
22 * GBK
23 */
24
25 static int
ces_gbk_mbtowc(conv_t conv,ucs4_t * pwc,const unsigned char * s,int n)26 ces_gbk_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
27 {
28 unsigned char c = *s;
29
30 /* Code set 0 (ASCII or GB 1988-89) */
31 if (c < 0x80)
32 return ascii_mbtowc(conv,pwc,s,n);
33 /* Code set 1 (GBK) */
34 if (c >= 0x81 && c < 0xff) {
35 if (n < 2)
36 return RET_TOOFEW(0);
37 return gbk_mbtowc(conv,pwc,s,2);
38 }
39 return RET_ILSEQ;
40 }
41
42 static int
ces_gbk_wctomb(conv_t conv,unsigned char * r,ucs4_t wc,int n)43 ces_gbk_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
44 {
45 unsigned char buf[2];
46 int ret;
47
48 /* Code set 0 (ASCII or GB 1988-89) */
49 ret = ascii_wctomb(conv,r,wc,n);
50 if (ret != RET_ILUNI)
51 return ret;
52
53 /* Code set 1 (GBK) */
54 ret = gbk_wctomb(conv,buf,wc,2);
55 if (ret != RET_ILUNI) {
56 if (ret != 2) abort();
57 if (n < 2)
58 return RET_TOOSMALL;
59 r[0] = buf[0];
60 r[1] = buf[1];
61 return 2;
62 }
63
64 return RET_ILUNI;
65 }
66