use addnwstr
[nvi.git] / regex / regfree.c
blobdffc3e28665e183623ee69d4a0e955cfe543477c
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.
6 * This code is derived from software contributed to Berkeley by
7 * Henry Spencer of the University of Toronto.
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 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
37 * @(#)regfree.c 8.2 (Berkeley) 3/16/94
40 #if defined(LIBC_SCCS) && !defined(lint)
41 static char sccsid[] = "@(#)regfree.c 8.2 (Berkeley) 3/16/94";
42 #endif /* LIBC_SCCS and not lint */
44 #include <sys/types.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <regex.h>
49 #include "utils.h"
50 #include "regex2.h"
53 - regfree - free everything
54 = extern void regfree(regex_t *);
56 void
57 regfree(preg)
58 regex_t *preg;
60 register struct re_guts *g;
62 if (preg->re_magic != MAGIC1) /* oops */
63 return; /* nice to complain, but hard */
65 g = preg->re_g;
66 if (g == NULL || g->magic != MAGIC2) /* oops again */
67 return;
68 preg->re_magic = 0; /* mark it invalid */
69 g->magic = 0; /* mark it invalid */
71 if (g->strip != NULL)
72 free((char *)g->strip);
73 if (g->sets != NULL)
74 free((char *)g->sets);
75 if (g->setbits != NULL)
76 free((char *)g->setbits);
77 if (g->must != NULL)
78 free(g->must);
79 free((char *)g);