1 /*- 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * James da Silva at the University of Maryland at College Park. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Compatibility routines that implement the old re_comp/re_exec interface in 35 * terms of the regcomp/regexec interface. It's possible that some programs 36 * rely on dark corners of re_comp/re_exec and won't work with this version, 37 * but most programs should be fine. 38 */ 39 40 #include <sys/cdefs.h> 41 #if defined(LIBC_SCCS) && !defined(lint) 42 #if 0 43 static char sccsid[] = "from: @(#)regex.c 5.1 (Berkeley) 3/29/92";*/ 44 #else 45 __RCSID("$NetBSD: regex.c,v 1.12 2003/08/07 16:44:16 agc Exp $"); 46 #endif 47 #endif /* LIBC_SCCS and not lint */ 48 49 #include <sys/types.h> 50 #include <stddef.h> 51 #ifdef __lint__ 52 #define __compat_regerror __compat43_regerror 53 #endif 54 #include <assert.h> 55 #include <regexp.h> 56 #include <re_comp.h> 57 #include <string.h> 58 #include <stdlib.h> 59 #include <unistd.h> 60 61 static regexp *re_regexp; 62 static int re_goterr; 63 static char *re_errstr; 64 65 char * 66 re_comp(s) 67 const char *s; 68 { 69 if (s == NULL || *s == '\0') 70 return (NULL); 71 if (re_regexp) 72 free(re_regexp); 73 if (re_errstr) 74 free(re_errstr); 75 re_goterr = 0; 76 re_regexp = regcomp(s); 77 return (re_goterr ? re_errstr : NULL); 78 } 79 80 int 81 re_exec(s) 82 const char *s; 83 { 84 int rc; 85 86 87 re_goterr = 0; 88 rc = regexec(re_regexp, s); 89 return (re_goterr ? -1 : rc); 90 } 91 92 void 93 regerror(s) 94 const char *s; 95 { 96 97 _DIAGASSERT(s != NULL); 98 99 re_goterr = 1; 100 if (re_errstr) 101 free(re_errstr); 102 re_errstr = strdup(s); 103 } 104