1/*	$NetBSD: regfree.c,v 1.4 2014/01/26 21:43:45 christos Exp $ */
2/*-
3 * Copyright (c) 1992, 1993, 1994 Henry Spencer.
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Henry Spencer of the University of Toronto.
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. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the University of
21 *	California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 *	@(#)regfree.c	8.2 (Berkeley) 3/16/94
39 */
40
41#include <sys/cdefs.h>
42#if 0
43#if defined(LIBC_SCCS) && !defined(lint)
44static char sccsid[] = "@(#)regfree.c	8.2 (Berkeley) 3/16/94";
45#endif /* LIBC_SCCS and not lint */
46#else
47__RCSID("$NetBSD: regfree.c,v 1.4 2014/01/26 21:43:45 christos Exp $");
48#endif
49
50#include <sys/types.h>
51#include <stdio.h>
52#include <stdlib.h>
53#include <regex.h>
54
55#include "utils.h"
56#include "regex2.h"
57
58/*
59 - regfree - free everything
60 = extern void regfree(regex_t *);
61 */
62void
63regfree(regex_t *preg)
64{
65	struct re_guts *g;
66
67	if (preg->re_magic != MAGIC1)	/* oops */
68		return;			/* nice to complain, but hard */
69
70	g = preg->re_g;
71	if (g == NULL || g->magic != MAGIC2)	/* oops again */
72		return;
73	preg->re_magic = 0;		/* mark it invalid */
74	g->magic = 0;			/* mark it invalid */
75
76	if (g->strip != NULL)
77		free((char *)g->strip);
78	if (g->stripdata != NULL)
79		free((char *)g->stripdata);
80	if (g->sets != NULL)
81		free((char *)g->sets);
82	if (g->setbits != NULL)
83		free((char *)g->setbits);
84	if (g->must != NULL)
85		free(g->must);
86	free((char *)g);
87}
88