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1 office 1 /*
2 * Copyright (C) 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 * DEC-KANJI
23 */
24  
25 static int
26 dec_kanji_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
27 {
28 unsigned char c = *s;
29 /* Code set 0 (ASCII or JIS X 0201-1976 Roman) */
30 if (c < 0x80)
31 return ascii_mbtowc(conv,pwc,s,n);
32 /* Code set 1 (JIS X 0208) */
33 if (c >= 0xa1 && c < 0xf5) {
34 if (n < 2)
35 return RET_TOOFEW(0);
36 {
37 unsigned char c2 = s[1];
38 if (c2 >= 0xa1 && c2 < 0xff) {
39 unsigned char buf[2];
40 buf[0] = c-0x80; buf[1] = c2-0x80;
41 return jisx0208_mbtowc(conv,pwc,buf,2);
42 }
43 }
44 }
45 return RET_ILSEQ;
46 }
47  
48 static int
49 dec_kanji_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
50 {
51 unsigned char buf[2];
52 int ret;
53  
54 /* Code set 0 (ASCII or JIS X 0201-1976 Roman) */
55 ret = ascii_wctomb(conv,r,wc,n);
56 if (ret != RET_ILUNI)
57 return ret;
58  
59 /* Code set 1 (JIS X 0208) */
60 ret = jisx0208_wctomb(conv,buf,wc,2);
61 if (ret != RET_ILUNI) {
62 if (ret != 2) abort();
63 if (n < 2)
64 return RET_TOOSMALL;
65 r[0] = buf[0]+0x80;
66 r[1] = buf[1]+0x80;
67 return 2;
68 }
69  
70 return RET_ILUNI;
71 }