19829d36aSTakuya SHIOZAKI /* $NetBSD: wcsstr.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ */ 29829d36aSTakuya SHIOZAKI 39829d36aSTakuya SHIOZAKI /*- 49829d36aSTakuya SHIOZAKI * Copyright (c)1999 Citrus Project, 59829d36aSTakuya SHIOZAKI * All rights reserved. 69829d36aSTakuya SHIOZAKI * 79829d36aSTakuya SHIOZAKI * Redistribution and use in source and binary forms, with or without 89829d36aSTakuya SHIOZAKI * modification, are permitted provided that the following conditions 99829d36aSTakuya SHIOZAKI * are met: 109829d36aSTakuya SHIOZAKI * 1. Redistributions of source code must retain the above copyright 119829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer. 129829d36aSTakuya SHIOZAKI * 2. Redistributions in binary form must reproduce the above copyright 139829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer in the 149829d36aSTakuya SHIOZAKI * documentation and/or other materials provided with the distribution. 159829d36aSTakuya SHIOZAKI * 169829d36aSTakuya SHIOZAKI * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 179829d36aSTakuya SHIOZAKI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 189829d36aSTakuya SHIOZAKI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 199829d36aSTakuya SHIOZAKI * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 209829d36aSTakuya SHIOZAKI * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 219829d36aSTakuya SHIOZAKI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 229829d36aSTakuya SHIOZAKI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 239829d36aSTakuya SHIOZAKI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 249829d36aSTakuya SHIOZAKI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 259829d36aSTakuya SHIOZAKI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 269829d36aSTakuya SHIOZAKI * SUCH DAMAGE. 279829d36aSTakuya SHIOZAKI * 289829d36aSTakuya SHIOZAKI * citrus Id: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp 299829d36aSTakuya SHIOZAKI * 309829d36aSTakuya SHIOZAKI * $FreeBSD$ 319829d36aSTakuya SHIOZAKI */ 329829d36aSTakuya SHIOZAKI 339829d36aSTakuya SHIOZAKI #include <sys/cdefs.h> 349829d36aSTakuya SHIOZAKI #if defined(LIBC_SCCS) && !defined(lint) 359829d36aSTakuya SHIOZAKI __RCSID("$NetBSD: wcsstr.c,v 1.1 2000/12/23 23:14:37 itojun Exp $"); 369829d36aSTakuya SHIOZAKI #endif /* LIBC_SCCS and not lint */ 379829d36aSTakuya SHIOZAKI 389829d36aSTakuya SHIOZAKI #include <assert.h> 399829d36aSTakuya SHIOZAKI #include <wchar.h> 409829d36aSTakuya SHIOZAKI 419829d36aSTakuya SHIOZAKI wchar_t * 429829d36aSTakuya SHIOZAKI wcsstr(big, little) 439829d36aSTakuya SHIOZAKI const wchar_t *big; 449829d36aSTakuya SHIOZAKI const wchar_t *little; 459829d36aSTakuya SHIOZAKI { 469829d36aSTakuya SHIOZAKI const wchar_t *p; 479829d36aSTakuya SHIOZAKI const wchar_t *q; 489829d36aSTakuya SHIOZAKI const wchar_t *r; 499829d36aSTakuya SHIOZAKI 509829d36aSTakuya SHIOZAKI _DIAGASSERT(big != NULL); 519829d36aSTakuya SHIOZAKI _DIAGASSERT(little != NULL); 529829d36aSTakuya SHIOZAKI 539829d36aSTakuya SHIOZAKI if (!*little) { 549829d36aSTakuya SHIOZAKI /* LINTED interface specification */ 559829d36aSTakuya SHIOZAKI return (wchar_t *)big; 569829d36aSTakuya SHIOZAKI } 579829d36aSTakuya SHIOZAKI if (wcslen(big) < wcslen(little)) 589829d36aSTakuya SHIOZAKI return NULL; 599829d36aSTakuya SHIOZAKI 609829d36aSTakuya SHIOZAKI p = big; 619829d36aSTakuya SHIOZAKI q = little; 629829d36aSTakuya SHIOZAKI while (*p) { 639829d36aSTakuya SHIOZAKI q = little; 649829d36aSTakuya SHIOZAKI r = p; 659829d36aSTakuya SHIOZAKI while (*q) { 669829d36aSTakuya SHIOZAKI if (*r != *q) 679829d36aSTakuya SHIOZAKI break; 689829d36aSTakuya SHIOZAKI q++; 699829d36aSTakuya SHIOZAKI r++; 709829d36aSTakuya SHIOZAKI } 719829d36aSTakuya SHIOZAKI if (!*q) { 729829d36aSTakuya SHIOZAKI /* LINTED interface specification */ 739829d36aSTakuya SHIOZAKI return (wchar_t *)p; 749829d36aSTakuya SHIOZAKI } 759829d36aSTakuya SHIOZAKI p++; 769829d36aSTakuya SHIOZAKI } 779829d36aSTakuya SHIOZAKI return NULL; 789829d36aSTakuya SHIOZAKI } 79