1/* Counting the multibyte characters in a string.
2   Copyright (C) 2007-2010 Free Software Foundation, Inc.
3   Written by Bruno Haible <bruno@clisp.org>, 2007.
4
5   This program is free software: you can redistribute it and/or modify
6   it under the terms of the GNU Lesser General Public License as published by
7   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
13   GNU 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 <string.h>
22
23#include <stdlib.h>
24
25#include "mbiter.h"
26
27/* Return the number of multibyte characters in the character string starting
28   at STRING and ending at STRING + LEN.  */
29size_t
30mbsnlen (const char *string, size_t len)
31{
32  if (MB_CUR_MAX > 1)
33    {
34      size_t count;
35      mbi_iterator_t iter;
36
37      count = 0;
38      for (mbi_init (iter, string, len); mbi_avail (iter); mbi_advance (iter))
39        count++;
40
41      return count;
42    }
43  else
44    return len;
45}
46