1 /* $OpenBSD: regfree.c,v 1.7 2005/08/05 13:03:00 espie 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.
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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)regfree.c 8.3 (Berkeley) 3/20/94
35 */
36
37 #include <sys/types.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <regex.h>
41
42 #include "utils.h"
43 #include "regex2.h"
44
45 /*
46 - regfree - free everything
47 */
48 void
regfree(regex_t * preg)49 regfree(regex_t *preg)
50 {
51 struct re_guts *g;
52
53 if (preg->re_magic != MAGIC1) /* oops */
54 return; /* nice to complain, but hard */
55
56 g = preg->re_g;
57 if (g == NULL || g->magic != MAGIC2) /* oops again */
58 return;
59 preg->re_magic = 0; /* mark it invalid */
60 g->magic = 0; /* mark it invalid */
61
62 if (g->strip != NULL)
63 free((char *)g->strip);
64 if (g->sets != NULL)
65 free((char *)g->sets);
66 if (g->setbits != NULL)
67 free((char *)g->setbits);
68 if (g->must != NULL)
69 free(g->must);
70 free((char *)g);
71 }
72