regfree.c revision 281373 
1/*	$NetBSD: regfree.c,v 1.2 2009/01/02 00:32:11 tnozaki 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. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	@(#)regfree.c	8.2 (Berkeley) 3/16/94
36 */
37
38#if defined(LIBC_SCCS) && !defined(lint)
39static char sccsid[] = "@(#)regfree.c	8.2 (Berkeley) 3/16/94";
40#endif /* LIBC_SCCS and not lint */
41
42#include <sys/types.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <regex.h>
46
47#include "utils.h"
48#include "regex2.h"
49
50/*
51 - regfree - free everything
52 */
53void
54regfree(regex_t *preg)
55{
56	struct re_guts *g;
57
58	if (preg->re_magic != MAGIC1)	/* oops */
59		return;			/* nice to complain, but hard */
60
61	g = preg->re_g;
62	if (g == NULL || g->magic != MAGIC2)	/* oops again */
63		return;
64	preg->re_magic = 0;		/* mark it invalid */
65	g->magic = 0;			/* mark it invalid */
66
67	if (g->strip != NULL)
68		free((char *)g->strip);
69	if (g->stripdata != NULL)
70		free((char *)g->stripdata);
71	if (g->sets != NULL)
72		free((char *)g->sets);
73	if (g->setbits != NULL)
74		free((char *)g->setbits);
75	if (g->must != NULL)
76		free(g->must);
77	free((char *)g);
78}
79