/*      $OpenBSD: lstDestroy.c,v 1.20 2010/07/19 19:46:44 espie Exp $   */
/*      $NetBSD: lstDestroy.c,v 1.6 1996/11/06 17:59:37 christos Exp $  */

/*
 * Copyright (c) 1988, 1989, 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Adam de Boor.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*-
 * LstDestroy.c --
 *      Nuke a list and all its resources
 */

#include        "lstInt.h"
#include        <stdlib.h>

/*-
 *-----------------------------------------------------------------------
 * Lst_Destroy --
 *      Destroy a list and free all its resources. If the freeProc is
 *      given, it is called with the datum from each node in turn before
 *      the node is freed.
 *
 * Side Effects:
 *      The given list is freed in its entirety.
 *
 *-----------------------------------------------------------------------
 */
void
Lst_Destroy(Lst l, SimpleProc freeProc)
{
        LstNode ln;
        LstNode tln;

        if (freeProc) {
                for (ln = l->firstPtr; ln != NULL; ln = tln) {
                         tln = ln->nextPtr;
                         (*freeProc)(ln->datum);
                         free(ln);
                }
        } else {
                for (ln = l->firstPtr; ln != NULL; ln = tln) {
                         tln = ln->nextPtr;
                         free(ln);
                }
        }
}