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      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 #include "./regex.h"
     42 
     43 #include "utils.h"
     44 // #include "regex2.h"
     45 #include "./regex2.h"
     46 
     47 /*
     48  - regfree - free everything
     49  */
     50 void
     51 regfree(regex_t *preg)
     52 {
     53 	struct re_guts *g;
     54 
     55 	if (preg->re_magic != MAGIC1)	/* oops */
     56 		return;			/* nice to complain, but hard */
     57 
     58 	g = preg->re_g;
     59 	if (g == NULL || g->magic != MAGIC2)	/* oops again */
     60 		return;
     61 	preg->re_magic = 0;		/* mark it invalid */
     62 	g->magic = 0;			/* mark it invalid */
     63 
     64 	if (g->strip != NULL)
     65 		free((char *)g->strip);
     66 	if (g->sets != NULL)
     67 		free((char *)g->sets);
     68 	if (g->setbits != NULL)
     69 		free((char *)g->setbits);
     70 	if (g->must != NULL)
     71 		free(g->must);
     72 	free((char *)g);
     73 }
     74