1 /* $OpenBSD: strchr.c,v 1.3 2004/05/06 01:12:05 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33 #if defined(LIBC_SCCS) && !defined(lint) 34 static char *rcsid = "$OpenBSD: strchr.c,v 1.3 2004/05/06 01:12:05 deraadt Exp $"; 35 #endif /* LIBC_SCCS and not lint */ 36 37 #include <sys/types.h> 38 #if !defined(_KERNEL) && !defined(_STANDALONE) 39 #include <string.h> 40 #else 41 #include <lib/libkern/libkern.h> 42 #define NULL ((char *)0) 43 #endif 44 45 char * 46 strchr(const char *s, int c) 47 { 48 while (*s) { 49 if (*s == c) 50 return ((char *)s); 51 s++; 52 } 53 return (NULL); 54 } 55 56 char * 57 strrchr(const char *s, int c) 58 { 59 char *t = NULL; 60 61 while (*s) { 62 if (*s == c) 63 t = (char *)s; 64 s++; 65 } 66 return (t); 67 } 68