1 /* $NetBSD: wcscspn.c,v 1.4 2011/11/24 18:44:25 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 Citrus Project, 5 * Copyright (c) 2011 Joerg Sonnenberger, 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * citrus Id: wcscspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp 30 */ 31 32 #include <sys/cdefs.h> 33 __RCSID("$NetBSD: wcscspn.c,v 1.4 2011/11/24 18:44:25 joerg Exp $"); 34 35 #include <assert.h> 36 #include <inttypes.h> 37 #include <string.h> 38 #include <wchar.h> 39 40 #include "wcscspn_bloom.h" 41 42 size_t 43 wcscspn(const wchar_t *s, const wchar_t *set) 44 { 45 size_t bloom[BLOOM_ARRAY_SIZE]; 46 const wchar_t *p; 47 const wchar_t *q; 48 49 _DIAGASSERT(s != NULL); 50 _DIAGASSERT(set != NULL); 51 52 if (set[0] == '\0') 53 return wcslen(s); 54 if (set[1] == '\0') { 55 for (p = s; *p; ++p) 56 if (*p == set[0]) 57 break; 58 return p - s; 59 } 60 61 wcsspn_bloom_init(bloom, set); 62 63 for (p = s; *p; ++p) { 64 if (!wcsspn_in_bloom(bloom, *p)) 65 continue; 66 67 q = set; 68 do { 69 if (*p == *q) 70 goto done; 71 } while (*++q); 72 } 73 74 done: 75 return (p - s); 76 } 77