1*d22a7f54Sjoerg /* $NetBSD: wcscspn.c,v 1.4 2011/11/24 18:44:25 joerg Exp $ */
2383f218aSitojun
3383f218aSitojun /*-
4383f218aSitojun * Copyright (c) 1999 Citrus Project,
5*d22a7f54Sjoerg * Copyright (c) 2011 Joerg Sonnenberger,
6383f218aSitojun * All rights reserved.
7383f218aSitojun *
8383f218aSitojun * Redistribution and use in source and binary forms, with or without
9383f218aSitojun * modification, are permitted provided that the following conditions
10383f218aSitojun * are met:
11383f218aSitojun * 1. Redistributions of source code must retain the above copyright
12383f218aSitojun * notice, this list of conditions and the following disclaimer.
13383f218aSitojun * 2. Redistributions in binary form must reproduce the above copyright
14383f218aSitojun * notice, this list of conditions and the following disclaimer in the
15383f218aSitojun * documentation and/or other materials provided with the distribution.
16383f218aSitojun *
17383f218aSitojun * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18383f218aSitojun * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19383f218aSitojun * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20383f218aSitojun * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21383f218aSitojun * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22383f218aSitojun * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23383f218aSitojun * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24383f218aSitojun * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25383f218aSitojun * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26383f218aSitojun * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27383f218aSitojun * SUCH DAMAGE.
28383f218aSitojun *
29383f218aSitojun * citrus Id: wcscspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
30383f218aSitojun */
31383f218aSitojun
32383f218aSitojun #include <sys/cdefs.h>
33*d22a7f54Sjoerg __RCSID("$NetBSD: wcscspn.c,v 1.4 2011/11/24 18:44:25 joerg Exp $");
34383f218aSitojun
355ba790cbSlukem #include <assert.h>
36*d22a7f54Sjoerg #include <inttypes.h>
37*d22a7f54Sjoerg #include <string.h>
38383f218aSitojun #include <wchar.h>
39383f218aSitojun
40*d22a7f54Sjoerg #include "wcscspn_bloom.h"
41*d22a7f54Sjoerg
42383f218aSitojun size_t
wcscspn(const wchar_t * s,const wchar_t * set)437e173c18Sjoerg wcscspn(const wchar_t *s, const wchar_t *set)
44383f218aSitojun {
45*d22a7f54Sjoerg size_t bloom[BLOOM_ARRAY_SIZE];
46383f218aSitojun const wchar_t *p;
47383f218aSitojun const wchar_t *q;
48383f218aSitojun
495ba790cbSlukem _DIAGASSERT(s != NULL);
505ba790cbSlukem _DIAGASSERT(set != NULL);
515ba790cbSlukem
52*d22a7f54Sjoerg if (set[0] == '\0')
53*d22a7f54Sjoerg return wcslen(s);
54*d22a7f54Sjoerg if (set[1] == '\0') {
55*d22a7f54Sjoerg for (p = s; *p; ++p)
56*d22a7f54Sjoerg if (*p == set[0])
57*d22a7f54Sjoerg break;
58*d22a7f54Sjoerg return p - s;
59*d22a7f54Sjoerg }
60*d22a7f54Sjoerg
61*d22a7f54Sjoerg wcsspn_bloom_init(bloom, set);
62*d22a7f54Sjoerg
637e173c18Sjoerg for (p = s; *p; ++p) {
64*d22a7f54Sjoerg if (!wcsspn_in_bloom(bloom, *p))
65*d22a7f54Sjoerg continue;
66*d22a7f54Sjoerg
67*d22a7f54Sjoerg q = set;
68*d22a7f54Sjoerg do {
69383f218aSitojun if (*p == *q)
70383f218aSitojun goto done;
71*d22a7f54Sjoerg } while (*++q);
72383f218aSitojun }
73383f218aSitojun
74383f218aSitojun done:
75383f218aSitojun return (p - s);
76383f218aSitojun }
77