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 * UCS-2-INTERNAL = UCS-2 with machine dependent endianness and alignment
23 */
24
25static int
26ucs2internal_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
27{
28  if (n >= 2) {
29    unsigned short x = *(const unsigned short *)s;
30    if (x >= 0xd800 && x < 0xe000) {
31      return RET_ILSEQ;
32    } else {
33      *pwc = x;
34      return 2;
35    }
36  }
37  return RET_TOOFEW(0);
38}
39
40static int
41ucs2internal_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
42{
43  if (wc < 0x10000 && !(wc >= 0xd800 && wc < 0xe000)) {
44    if (n >= 2) {
45      *(unsigned short *)r = wc;
46      return 2;
47    } else
48      return RET_TOOSMALL;
49  } else
50    return RET_ILUNI;
51}
52