1 /* $OpenBSD: wcsstr.c,v 1.5 2015/10/01 02:32:07 guenther Exp $ */ 2 /* $NetBSD: wcsstr.c,v 1.3 2003/03/05 20:18:17 tshiozak Exp $ */ 3 4 /*- 5 * Copyright (c)1999 Citrus Project, 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: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp 30 */ 31 32 #include <wchar.h> 33 34 wchar_t * 35 #ifdef WCSWCS 36 wcswcs(const wchar_t *big, const wchar_t *little) 37 #else 38 wcsstr(const wchar_t *big, const wchar_t *little) 39 #endif 40 { 41 const wchar_t *p; 42 const wchar_t *q; 43 const wchar_t *r; 44 45 if (!*little) { 46 return (wchar_t *)big; 47 } 48 if (wcslen(big) < wcslen(little)) 49 return NULL; 50 51 p = big; 52 q = little; 53 while (*p) { 54 q = little; 55 r = p; 56 while (*q) { 57 if (*r != *q) 58 break; 59 q++; 60 r++; 61 } 62 if (!*q) { 63 return (wchar_t *)p; 64 } 65 p++; 66 } 67 return NULL; 68 } 69 #ifndef WCSWCS 70 DEF_STRONG(wcsstr); 71 #endif 72