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/* Searching a string for a character among a given set of characters.
Copyright (C) 1999, 2002, 2006-2013 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <string.h>
#include "mbuiter.h"
/* Find the first occurrence in the character string STRING of any character
in the character string ACCEPT. Return the pointer to it, or NULL if none
exists. */
char *
mbspbrk (const char *string, const char *accept)
{
/* Optimize two cases. */
if (accept[0] == '\0')
return NULL;
if (accept[1] == '\0')
return mbschr (string, accept[0]);
/* General case. */
if (MB_CUR_MAX > 1)
{
mbui_iterator_t iter;
for (mbui_init (iter, string); mbui_avail (iter); mbui_advance (iter))
{
if (mb_len (mbui_cur (iter)) == 1)
{
if (mbschr (accept, * mbui_cur_ptr (iter)))
return (char *) mbui_cur_ptr (iter);
}
else
{
mbui_iterator_t aiter;
for (mbui_init (aiter, accept);
mbui_avail (aiter);
mbui_advance (aiter))
if (mb_equal (mbui_cur (aiter), mbui_cur (iter)))
return (char *) mbui_cur_ptr (iter);
}
}
return NULL;
}
else
return strpbrk (string, accept);
}
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