| 1 | /*- |
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| 2 | * Copyright (c) 1992, 1993, 1994 Henry Spencer. |
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| 3 | * Copyright (c) 1992, 1993, 1994 |
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| 4 | * The Regents of the University of California. All rights reserved. |
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| 5 | * |
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| 6 | * This code is derived from software contributed to Berkeley by |
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| 7 | * Henry Spencer. |
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| 8 | * |
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| 9 | * Redistribution and use in source and binary forms, with or without |
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| 10 | * modification, are permitted provided that the following conditions |
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| 11 | * are met: |
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| 12 | * 1. Redistributions of source code must retain the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer. |
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 15 | * notice, this list of conditions and the following disclaimer in the |
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| 16 | * documentation and/or other materials provided with the distribution. |
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| 17 | * 4. Neither the name of the University nor the names of its contributors |
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| 18 | * may be used to endorse or promote products derived from this software |
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| 19 | * without specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 31 | * SUCH DAMAGE. |
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| 32 | * |
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| 33 | * @(#)regfree.c 8.3 (Berkeley) 3/20/94 |
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| 34 | */ |
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| 35 | |
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| 36 | #ifndef _NO_REGEX |
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| 37 | |
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| 38 | #if defined(LIBC_SCCS) && !defined(lint) |
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| 39 | static char sccsid[] = "@(#)regfree.c 8.3 (Berkeley) 3/20/94"; |
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| 40 | #endif /* LIBC_SCCS and not lint */ |
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| 41 | #include <sys/cdefs.h> |
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| 42 | |
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| 43 | #include <sys/types.h> |
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| 44 | #include <stdio.h> |
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| 45 | #include <stdlib.h> |
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| 46 | #include <limits.h> |
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| 47 | #include <regex.h> |
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| 48 | |
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| 49 | #include "utils.h" |
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| 50 | #include "regex2.h" |
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| 51 | |
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| 52 | /* |
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| 53 | - regfree - free everything |
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| 54 | = extern void regfree(regex_t *); |
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| 55 | */ |
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| 56 | void |
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| 57 | regfree(preg) |
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| 58 | regex_t *preg; |
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| 59 | { |
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| 60 | struct re_guts *g; |
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| 61 | |
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| 62 | if (preg->re_magic != MAGIC1) /* oops */ |
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| 63 | return; /* nice to complain, but hard */ |
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| 64 | |
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| 65 | g = preg->re_g; |
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| 66 | if (g == NULL || g->magic != MAGIC2) /* oops again */ |
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| 67 | return; |
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| 68 | preg->re_magic = 0; /* mark it invalid */ |
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| 69 | g->magic = 0; /* mark it invalid */ |
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| 70 | |
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| 71 | if (g->strip != NULL) |
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| 72 | free((char *)g->strip); |
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| 73 | if (g->sets != NULL) |
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| 74 | free((char *)g->sets); |
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| 75 | if (g->setbits != NULL) |
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| 76 | free((char *)g->setbits); |
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| 77 | if (g->must != NULL) |
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| 78 | free(g->must); |
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| 79 | if (g->charjump != NULL) |
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| 80 | free(&g->charjump[CHAR_MIN]); |
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| 81 | if (g->matchjump != NULL) |
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| 82 | free(g->matchjump); |
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| 83 | free((char *)g); |
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| 84 | } |
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| 85 | |
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| 86 | #endif /* !_NO_REGEX */ |
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