dist/nvi/regex/regfree.c

   1 /*      $NetBSD: regfree.c,v 1.1.1.2 2008/05/18 14:31:39 aymeric Exp $ */
   2
   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 of the University of Toronto.
  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. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      @(#)regfree.c   8.2 (Berkeley) 3/16/94
  40  */
  41
  42 #if defined(LIBC_SCCS) && !defined(lint)
  43 static char sccsid[] = "@(#)regfree.c   8.2 (Berkeley) 3/16/94";
  44 #endif /* LIBC_SCCS and not lint */
  45
  46 #include <sys/types.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <regex.h>
  50
  51 #include "utils.h"
  52 #include "regex2.h"
  53
  54 /*
  55  - regfree - free everything
  56  = extern void regfree(regex_t *);
  57  */
  58 void
  59 regfree(regex_t *preg)
  60 {
  61         register struct re_guts *g;
  62
  63         if (preg->re_magic != MAGIC1)   /* oops */
  64                 return;                 /* nice to complain, but hard */
  65
  66         g = preg->re_g;
  67         if (g == NULL || g->magic != MAGIC2)    /* oops again */
  68                 return;
  69         preg->re_magic = 0;             /* mark it invalid */
  70         g->magic = 0;                   /* mark it invalid */
  71
  72         if (g->strip != NULL)
  73                 free((char *)g->strip);
  74         if (g->stripdata != NULL)
  75                 free((char *)g->stripdata);
  76         if (g->sets != NULL)
  77                 free((char *)g->sets);
  78         if (g->setbits != NULL)
  79                 free((char *)g->setbits);
  80         if (g->must != NULL)
  81                 free(g->must);
  82         free((char *)g);
  83 }