1/* $NetBSD: lstDupl.c,v 1.16 2009/01/23 21:26:30 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: lstDupl.c,v 1.16 2009/01/23 21:26:30 dsl Exp $"; 37#else 38#include <sys/cdefs.h> 39#ifndef lint 40#if 0 41static char sccsid[] = "@(#)lstDupl.c 8.1 (Berkeley) 6/6/93"; 42#else 43__RCSID("$NetBSD: lstDupl.c,v 1.16 2009/01/23 21:26:30 dsl Exp $"); 44#endif 45#endif /* not lint */ 46#endif 47 48/*- 49 * listDupl.c -- 50 * Duplicate a list. This includes duplicating the individual 51 * elements. 52 */ 53 54#include "lstInt.h" 55 56/*- 57 *----------------------------------------------------------------------- 58 * Lst_Duplicate -- 59 * Duplicate an entire list. If a function to copy a void *is 60 * given, the individual client elements will be duplicated as well. 61 * 62 * Input: 63 * l the list to duplicate 64 * copyProc A function to duplicate each void * 65 * 66 * Results: 67 * The new Lst structure or NULL if failure. 68 * 69 * Side Effects: 70 * A new list is created. 71 *----------------------------------------------------------------------- 72 */ 73Lst 74Lst_Duplicate(Lst l, DuplicateProc *copyProc) 75{ 76 Lst nl; 77 ListNode ln; 78 List list = l; 79 80 if (!LstValid (l)) { 81 return NULL; 82 } 83 84 nl = Lst_Init(list->isCirc); 85 if (nl == NULL) { 86 return NULL; 87 } 88 89 ln = list->firstPtr; 90 while (ln != NULL) { 91 if (copyProc != NULL) { 92 if (Lst_AtEnd(nl, copyProc(ln->datum)) == FAILURE) { 93 return NULL; 94 } 95 } else if (Lst_AtEnd(nl, ln->datum) == FAILURE) { 96 return NULL; 97 } 98 99 if (list->isCirc && ln == list->lastPtr) { 100 ln = NULL; 101 } else { 102 ln = ln->nextPtr; 103 } 104 } 105 106 return (nl); 107} 108