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/* Counting the multibyte characters in a string.
Copyright (C) 2007 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2007.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <config.h>
/* Specification. */
#include <string.h>
#include <stdlib.h>
#if HAVE_MBRTOWC
# include "mbiter.h"
#endif
/* Return the number of multibyte characters in the character string starting
at STRING and ending at STRING + LEN. */
size_t
mbsnlen (const char *string, size_t len)
{
#if HAVE_MBRTOWC
if (MB_CUR_MAX > 1)
{
size_t count;
mbi_iterator_t iter;
count = 0;
for (mbi_init (iter, string, len); mbi_avail (iter); mbi_advance (iter))
count++;
return count;
}
else
#endif
return len;
}
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