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
36 #include <sys/types.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <limits.h>
40 #include <regex.h>
41 #include <wchar.h>
42 #include <wctype.h>
43
44 #include "utils.h"
45 #include "regex2.h"
46
47 /*
48 - regfree - free everything
49 = extern void regfree(regex_t *);
50 */
51 void
regfree(regex_t * preg)52 regfree(regex_t *preg)
53 {
54 struct re_guts *g;
55 unsigned int i;
56
57 if (preg->re_magic != MAGIC1) /* oops */
58 return; /* nice to complain, but hard */
59
60 g = preg->re_g;
61 if (g == NULL || g->magic != MAGIC2) /* oops again */
62 return;
63 preg->re_magic = 0; /* mark it invalid */
64 g->magic = 0; /* mark it invalid */
65
66 if (g->strip != NULL)
67 free((char *)g->strip);
68 if (g->sets != NULL) {
69 for (i = 0; i < g->ncsets; i++) {
70 free(g->sets[i].ranges);
71 free(g->sets[i].wides);
72 free(g->sets[i].types);
73 }
74 free((char *)g->sets);
75 }
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