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-JP
23 * also known as JIS_C6220-1969-RO
24 */
25
26/* This is the lower half of JIS_X0201. */
27
28static int
29iso646_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
30{
31  unsigned char c = *s;
32  if (c < 0x80) {
33    if (c == 0x5c)
34      *pwc = (ucs4_t) 0x00a5;
35    else if (c == 0x7e)
36      *pwc = (ucs4_t) 0x203e;
37    else
38      *pwc = (ucs4_t) c;
39    return 1;
40  }
41  return RET_ILSEQ;
42}
43
44static int
45iso646_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
46{
47  if (wc < 0x0080 && !(wc == 0x005c || wc == 0x007e)) {
48    *r = wc;
49    return 1;
50  }
51  if (wc == 0x00a5) {
52    *r = 0x5c;
53    return 1;
54  }
55  if (wc == 0x203e) {
56    *r = 0x7e;
57    return 1;
58  }
59  return RET_ILUNI;
60}
61