1/*	$NetBSD: regfree.c,v 1.1.1.2 2008/05/18 14:31:39 aymeric Exp $ */
2
3/*-
4 * Copyright (c) 1992, 1993, 1994 Henry Spencer.
5 * Copyright (c) 1992, 1993, 1994
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Henry Spencer of the University of Toronto.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 *	@(#)regfree.c	8.2 (Berkeley) 3/16/94
40 */
41
42#if defined(LIBC_SCCS) && !defined(lint)
43static char sccsid[] = "@(#)regfree.c	8.2 (Berkeley) 3/16/94";
44#endif /* LIBC_SCCS and not lint */
45
46#include <sys/types.h>
47#include <stdio.h>
48#include <stdlib.h>
49#include <regex.h>
50
51#include "utils.h"
52#include "regex2.h"
53
54/*
55 - regfree - free everything
56 = extern void regfree(regex_t *);
57 */
58void
59regfree(regex_t *preg)
60{
61	register struct re_guts *g;
62
63	if (preg->re_magic != MAGIC1)	/* oops */
64		return;			/* nice to complain, but hard */
65
66	g = preg->re_g;
67	if (g == NULL || g->magic != MAGIC2)	/* oops again */
68		return;
69	preg->re_magic = 0;		/* mark it invalid */
70	g->magic = 0;			/* mark it invalid */
71
72	if (g->strip != NULL)
73		free((char *)g->strip);
74	if (g->stripdata != NULL)
75		free((char *)g->stripdata);
76	if (g->sets != NULL)
77		free((char *)g->sets);
78	if (g->setbits != NULL)
79		free((char *)g->setbits);
80	if (g->must != NULL)
81		free(g->must);
82	free((char *)g);
83}
84