1/* $NetBSD: lstFindFrom.c,v 1.15 2009/01/23 21:58:28 dsl Exp $ */ 2 3/* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#ifndef MAKE_NATIVE 36static char rcsid[] = "$NetBSD: lstFindFrom.c,v 1.15 2009/01/23 21:58:28 dsl Exp $"; 37#else 38#include <sys/cdefs.h> 39#ifndef lint 40#if 0 41static char sccsid[] = "@(#)lstFindFrom.c 8.1 (Berkeley) 6/6/93"; 42#else 43__RCSID("$NetBSD: lstFindFrom.c,v 1.15 2009/01/23 21:58:28 dsl Exp $"); 44#endif 45#endif /* not lint */ 46#endif 47 48/*- 49 * LstFindFrom.c -- 50 * Find a node on a list from a given starting point. Used by Lst_Find. 51 */ 52 53#include "lstInt.h" 54 55/*- 56 *----------------------------------------------------------------------- 57 * Lst_FindFrom -- 58 * Search for a node starting and ending with the given one on the 59 * given list using the passed datum and comparison function to 60 * determine when it has been found. 61 * 62 * Results: 63 * The found node or NULL 64 * 65 * Side Effects: 66 * None. 67 * 68 *----------------------------------------------------------------------- 69 */ 70LstNode 71Lst_FindFrom(Lst l, LstNode ln, const void *d, 72 int (*cProc)(const void *, const void *)) 73{ 74 ListNode tln; 75 76 if (!LstValid (l) || LstIsEmpty (l) || !LstNodeValid (ln, l)) { 77 return NULL; 78 } 79 80 tln = ln; 81 82 do { 83 if ((*cProc)(tln->datum, d) == 0) 84 return (tln); 85 tln = tln->nextPtr; 86 } while (tln != ln && tln != NULL); 87 88 return NULL; 89} 90 91