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