1 /* Locale dependent transformation for case insensitive comparison of strings.
2 Copyright (C) 2009-2014 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/>. */
29 ulc_casexfrm (const char *s, size_t n, const char *iso639_language,
31 char *resultbuf, size_t *lengthp)
33 uint8_t convbuf[2048 / sizeof (uint8_t)];
38 /* Convert the string to UTF-8. */
39 conv_length = sizeof (convbuf) / sizeof (uint8_t);
41 u8_conv_from_encoding (locale_charset (), iconveh_error, s, n, NULL,
42 convbuf, &conv_length);
44 /* errno is set here. */
47 /* Case-fold and normalize. */
48 result = u8_casexfrm (conv, conv_length, iso639_language, nf,
54 int saved_errno = errno;