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 #if defined(LIBC_SCCS) && !defined(lint) 45 static char sccsid[] = "@(#)regex.c 5.1 (Berkeley) 3/29/92"; 46 #endif /* LIBC_SCCS and not lint */ 47 48 #include <sys/types.h> 49 #include <stddef.h> 50 #include <regexp.h> 51 #include <string.h> 52 #include <stdlib.h> 53 54 static regexp *re_regexp; 55 static int re_goterr; 56 static char *re_errstr; 57 58 char * 59 re_comp(s) 60 char *s; 61 { 62 if (s == NULL) 63 return (NULL); 64 if (re_regexp) 65 free(re_regexp); 66 if (re_errstr) 67 free(re_errstr); 68 re_goterr = 0; 69 re_regexp = regcomp(s); 70 return (re_goterr ? re_errstr : NULL); 71 } 72 73 int 74 re_exec(s) 75 char *s; 76 { 77 int rc; 78 79 re_goterr = 0; 80 rc = regexec(re_regexp, s); 81 return (re_goterr ? -1 : rc); 82 } 83 84 void 85 regerror(s) 86 const char *s; 87 { 88 re_goterr = 1; 89 if (re_errstr) 90 free(re_errstr); 91 re_errstr = strdup(s); 92 } 93