1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
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.
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	8.3 (Berkeley) 3/20/94
36 */
37
38#if defined(LIBC_SCCS) && !defined(lint)
39static char sccsid[] = "@(#)regfree.c	8.3 (Berkeley) 3/20/94";
40#endif /* LIBC_SCCS and not lint */
41#include <sys/cdefs.h>
42__FBSDID("$FreeBSD$");
43
44#include <sys/types.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <limits.h>
48#include <regex.h>
49#include <wchar.h>
50#include <wctype.h>
51
52#include "utils.h"
53#include "regex2.h"
54
55/*
56 - regfree - free everything
57 = extern void regfree(regex_t *);
58 */
59void
60regfree(regex_t *preg)
61{
62	struct re_guts *g;
63	unsigned int i;
64
65	if (preg->re_magic != MAGIC1)	/* oops */
66		return;			/* nice to complain, but hard */
67
68	g = preg->re_g;
69	if (g == NULL || g->magic != MAGIC2)	/* oops again */
70		return;
71	preg->re_magic = 0;		/* mark it invalid */
72	g->magic = 0;			/* mark it invalid */
73
74	if (g->strip != NULL)
75		free((char *)g->strip);
76	if (g->sets != NULL) {
77		for (i = 0; i < g->ncsets; i++) {
78			free(g->sets[i].ranges);
79			free(g->sets[i].wides);
80			free(g->sets[i].types);
81		}
82		free((char *)g->sets);
83	}
84	if (g->must != NULL)
85		free(g->must);
86	if (g->charjump != NULL)
87		free(&g->charjump[CHAR_MIN]);
88	if (g->matchjump != NULL)
89		free(g->matchjump);
90	free((char *)g);
91}
92