1 /*-
2 * Copyright (c) 1992, 1993, 1994 Henry Spencer.
3 * Copyright (c) 1992, 1993, 1994
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Henry Spencer.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)regfree.c 8.3 (Berkeley) 3/20/94
34 */
35
36 #ifndef _NO_REGEX
37
38 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)regfree.c 8.3 (Berkeley) 3/20/94";
40 #endif /* LIBC_SCCS and not lint */
41 #include <sys/cdefs.h>
42
43 #include <sys/types.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <limits.h>
47 #include <regex.h>
48
49 #include "utils.h"
50 #include "regex2.h"
51
52 /*
53 - regfree - free everything
54 = extern void regfree(regex_t *);
55 */
56 void
regfree(regex_t * preg)57 regfree(regex_t *preg)
58 {
59 struct re_guts *g;
60
61 if (preg->re_magic != MAGIC1) /* oops */
62 return; /* nice to complain, but hard */
63
64 g = preg->re_g;
65 if (g == NULL || g->magic != MAGIC2) /* oops again */
66 return;
67 preg->re_magic = 0; /* mark it invalid */
68 g->magic = 0; /* mark it invalid */
69
70 if (g->strip != NULL)
71 free((char *)g->strip);
72 if (g->sets != NULL)
73 free((char *)g->sets);
74 if (g->setbits != NULL)
75 free((char *)g->setbits);
76 if (g->must != NULL)
77 free(g->must);
78 if (g->charjump != NULL)
79 free(&g->charjump[CHAR_MIN]);
80 if (g->matchjump != NULL)
81 free(g->matchjump);
82 free((char *)g);
83 }
84
85 #endif /* !_NO_REGEX */
86
