minix/lib/libc/string/wcscspn.c

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/* $NetBSD: wcscspn.c,v 1.4 2011/11/24 18:44:25 joerg Exp $ */
/*-
* Copyright (c) 1999 Citrus Project,
* Copyright (c) 2011 Joerg Sonnenberger,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* citrus Id: wcscspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: wcscspn.c,v 1.4 2011/11/24 18:44:25 joerg Exp $");
#include <assert.h>
#include <inttypes.h>
#include <string.h>
#include <wchar.h>
#include "wcscspn_bloom.h"
size_t
wcscspn(const wchar_t *s, const wchar_t *set)
{
size_t bloom[BLOOM_ARRAY_SIZE];
const wchar_t *p;
const wchar_t *q;
_DIAGASSERT(s != NULL);
_DIAGASSERT(set != NULL);
if (set[0] == '\0')
return wcslen(s);
if (set[1] == '\0') {
for (p = s; *p; ++p)
if (*p == set[0])
break;
return p - s;
}
wcsspn_bloom_init(bloom, set);
for (p = s; *p; ++p) {
if (!wcsspn_in_bloom(bloom, *p))
continue;
q = set;
do {
if (*p == *q)
goto done;
} while (*++q);
}
done:
return (p - s);
}