regex/regfree-fbsd.c

   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  * 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.
  24  *
  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.
  36  *
  37  *      @(#)regfree.c   8.3 (Berkeley) 3/20/94
  38  */
  39
  40 #if defined(LIBC_SCCS) && !defined(lint)
  41 static char sccsid[] = "@(#)regfree.c   8.3 (Berkeley) 3/20/94";
  42 #endif /* LIBC_SCCS and not lint */
  43 #include <sys/cdefs.h>
  44 __FBSDID("$FreeBSD: src/lib/libc/regex/regfree.c,v 1.6 2004/07/12 07:35:59 tjr Exp $");
  45
  46 #include <sys/types.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <limits.h>
  50 #include <regex.h>
  51 #include <wchar.h>
  52 #include <wctype.h>
  53
  54 #include "utils.h"
  55 #include "regex2.h"
  56
  57 /*
  58  - regfree - free everything
  59  = extern void regfree(regex_t *);
  60  */
  61 void
  62 regfree(preg)
  63 regex_t *preg;
  64 {
  65         struct re_guts *g;
  66         int i;
  67
  68         if (preg->re_magic != MAGIC1)   /* oops */
  69                 return;                 /* nice to complain, but hard */
  70
  71         g = preg->re_g;
  72         if (g == NULL || g->magic != MAGIC2)    /* oops again */
  73                 return;
  74         preg->re_magic = 0;             /* mark it invalid */
  75         g->magic = 0;                   /* mark it invalid */
  76
  77         if (g->strip != NULL)
  78                 free((char *)g->strip);
  79         if (g->sets != NULL) {
  80                 for (i = 0; i < g->ncsets; i++) {
  81                         free(g->sets[i].ranges);
  82                         free(g->sets[i].wides);
  83                         free(g->sets[i].types);
  84                         free(g->sets[i].equiv_classes);
  85                 }
  86                 free((char *)g->sets);
  87         }
  88         if (g->must != NULL)
  89                 free(g->must);
  90         if (g->charjump != NULL)
  91                 free(&g->charjump[CHAR_MIN]);
  92         if (g->matchjump != NULL)
  93                 free(g->matchjump);
  94         free((char *)g);
  95 }