1/* Case and normalization insensitive comparison of strings.
2   Copyright (C) 2009-2010 Free Software Foundation, Inc.
3   Written by Bruno Haible <bruno@clisp.org>, 2009.
4
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.
9
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.
14
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/>.  */
17
18#include <config.h>
19
20/* Specification.  */
21#include "unicase.h"
22
23#include <errno.h>
24#include <stdlib.h>
25
26#include "minmax.h"
27#include "uninorm.h"
28#include "uniconv.h"
29#include "unistr.h"
30
31static uint8_t *
32ulc_u8_casefold (const char *s, size_t n, const char *iso639_language,
33                 uninorm_t nf,
34                 uint8_t *resultbuf, size_t *lengthp)
35{
36  uint8_t convbuf[2048 / sizeof (uint8_t)];
37  uint8_t *conv;
38  size_t conv_length;
39  uint8_t *result;
40
41  /* Convert the string to UTF-8.  */
42  conv_length = sizeof (convbuf) / sizeof (uint8_t);
43  conv =
44    u8_conv_from_encoding (locale_charset (), iconveh_error, s, n, NULL,
45                           convbuf, &conv_length);
46  if (conv == NULL)
47    /* errno is set here.  */
48    return NULL;
49
50  /* Case-fold and normalize.  */
51  result = u8_casefold (conv, conv_length, iso639_language, nf,
52                        resultbuf, lengthp);
53  if (result == NULL)
54    {
55      if (conv != convbuf)
56        {
57          int saved_errno = errno;
58          free (conv);
59          errno = saved_errno;
60        }
61      return NULL;
62    }
63
64  if (conv != convbuf)
65    free (conv);
66  return result;
67}
68
69#define FUNC ulc_casecmp
70#define UNIT uint8_t
71#define SRC_UNIT char
72#define U_CASEFOLD ulc_u8_casefold
73#define U_CMP2 u8_cmp2
74#include "u-casecmp.h"
75