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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 /* 38 * Compatibility routines that implement the old re_comp/re_exec interface in 39 * terms of the regcomp/regexec interface. It's possible that some programs 40 * rely on dark corners of re_comp/re_exec and won't work with this version, 41 * but most programs should be fine. 42 */ 43 44 #include <sys/cdefs.h> 45 #if defined(LIBC_SCCS) && !defined(lint) 46 #if 0 47 static char sccsid[] = "from: @(#)regex.c 5.1 (Berkeley) 3/29/92";*/ 48 #else 49 __RCSID("$NetBSD: regex.c,v 1.11 1999/09/20 04:48:03 lukem Exp $"); 50 #endif 51 #endif /* LIBC_SCCS and not lint */ 52 53 #include <sys/types.h> 54 #include <stddef.h> 55 #ifdef __lint__ 56 #define __compat_regerror __compat43_regerror 57 #endif 58 #include <assert.h> 59 #include <regexp.h> 60 #include <re_comp.h> 61 #include <string.h> 62 #include <stdlib.h> 63 #include <unistd.h> 64 65 static regexp *re_regexp; 66 static int re_goterr; 67 static char *re_errstr; 68 69 char * 70 re_comp(s) 71 const char *s; 72 { 73 if (s == NULL || *s == '\0') 74 return (NULL); 75 if (re_regexp) 76 free(re_regexp); 77 if (re_errstr) 78 free(re_errstr); 79 re_goterr = 0; 80 re_regexp = regcomp(s); 81 return (re_goterr ? re_errstr : NULL); 82 } 83 84 int 85 re_exec(s) 86 const char *s; 87 { 88 int rc; 89 90 91 re_goterr = 0; 92 rc = regexec(re_regexp, s); 93 return (re_goterr ? -1 : rc); 94 } 95 96 void 97 regerror(s) 98 const char *s; 99 { 100 101 _DIAGASSERT(s != NULL); 102 103 re_goterr = 1; 104 if (re_errstr) 105 free(re_errstr); 106 re_errstr = strdup(s); 107 } 108