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[libiconv.git] / lib / ucs4be.h
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1 /*
2 * Copyright (C) 1999-2000, 2016 Free Software Foundation, Inc.
3 * This file is part of the GNU LIBICONV Library.
5 * The GNU LIBICONV Library is free software; you can redistribute it
6 * and/or modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either version 2.1
8 * of the License, or (at your option) any later version.
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 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
17 * If not, see <https://www.gnu.org/licenses/>.
21 * UCS-4BE = UCS-4 big endian
24 static int
25 ucs4be_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
27 if (n >= 4) {
28 *pwc = (s[0] << 24) + (s[1] << 16) + (s[2] << 8) + s[3];
29 return 4;
31 return RET_TOOFEW(0);
34 static int
35 ucs4be_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
37 if (n >= 4) {
38 r[0] = (unsigned char) (wc >> 24);
39 r[1] = (unsigned char) (wc >> 16);
40 r[2] = (unsigned char) (wc >> 8);
41 r[3] = (unsigned char) wc;
42 return 4;
43 } else
44 return RET_TOOSMALL;