1 /*
2 * Copyright (C) 1999-2001 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 * ISO646-CN
23 * also known as GB_1988-80
24 */
25
26 static int
iso646_cn_mbtowc(conv_t conv,ucs4_t * pwc,const unsigned char * s,int n)27 iso646_cn_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
28 {
29 unsigned char c = *s;
30 if (c < 0x80) {
31 if (c == 0x24)
32 *pwc = (ucs4_t) 0x00a5;
33 else if (c == 0x7e)
34 *pwc = (ucs4_t) 0x203e;
35 else
36 *pwc = (ucs4_t) c;
37 return 1;
38 }
39 return RET_ILSEQ;
40 }
41
42 static int
iso646_cn_wctomb(conv_t conv,unsigned char * r,ucs4_t wc,int n)43 iso646_cn_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
44 {
45 if (wc < 0x0080 && !(wc == 0x0024 || wc == 0x007e)) {
46 *r = wc;
47 return 1;
48 }
49 if (wc == 0x00a5) {
50 *r = 0x24;
51 return 1;
52 }
53 if (wc == 0x203e) {
54 *r = 0x7e;
55 return 1;
56 }
57 return RET_ILUNI;
58 }
59