1 /* Locale dependent transformation for comparison of Unicode strings.
2 Copyright (C) 2009-2013 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2009.
5 This program is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Lesser General Public License as published
7 by the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 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 License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 FUNC (const UNIT *s, size_t n, uninorm_t nf,
20 char *resultbuf, size_t *lengthp)
22 UNIT normsbuf[2048 / sizeof (UNIT)];
30 /* Normalize the Unicode string. */
31 norms_length = sizeof (normsbuf) / sizeof (UNIT);
32 norms = U_NORMALIZE (nf, s, n, normsbuf, &norms_length);
34 /* errno is set here. */
37 /* Convert it to locale encoding. */
38 convs_length = sizeof (convsbuf) - 1;
39 convs = U_CONV_TO_ENCODING (locale_charset (),
43 convsbuf, &convs_length);
46 if (norms != normsbuf)
48 int saved_errno = errno;
55 if (norms != normsbuf)
58 /* Ensure one more byte is available. */
59 if (convs != convsbuf)
61 char *memory = (char *) realloc (convs, convs_length + 1);
71 /* Apply locale dependent transformations for comparison. */
72 result = amemxfrm (convs, convs_length, resultbuf, lengthp);
75 if (convs != convsbuf)
77 int saved_errno = errno;
84 if (convs != convsbuf)