1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "lint.h" 28 #include <sys/types.h> 29 #include <wchar.h> 30 #include "libc.h" 31 32 wchar_t * 33 wcsstr(const wchar_t *ws1, const wchar_t *ws2) 34 { 35 const wchar_t *os1, *os2; 36 const wchar_t *tptr; 37 wchar_t c; 38 39 os1 = ws1; 40 os2 = ws2; 41 42 if (os1 == NULL || *os2 == L'\0') 43 return ((wchar_t *)os1); 44 c = *os2; 45 46 while (*os1) 47 if (*os1++ == c) { 48 tptr = os1; 49 while (((c = *++os2) == *os1++) && (c != L'\0')) 50 ; 51 if (c == L'\0') 52 return ((wchar_t *)tptr - 1); 53 os1 = tptr; 54 os2 = ws2; 55 c = *os2; 56 } 57 return (NULL); 58 } 59