2 * Copyright (c) 1992 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
6 * James da Silva at the University of Maryland at College Park.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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 * 4. 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.
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
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 * Compatibility routines that implement the old re_comp/re_exec interface in
38 * terms of the regcomp/regexec interface. It's possible that some programs
39 * rely on dark corners of re_comp/re_exec and won't work with this version,
40 * but most programs should be fine.
43 #if defined(LIBC_SCCS) && !defined(lint)
44 static char sccsid[] = "@(#)regex.c 5.1 (Berkeley) 3/29/92";
45 #endif /* LIBC_SCCS and not lint */
47 #include <sys/types.h>
54 static regexp *re_regexp;
56 static char *re_errstr;
62 if (s == NULL || *s == '\0') {
63 if (re_regexp == NULL)
64 return "no previous regular expression";
72 re_regexp = regcomp(s);
73 return (re_goterr ? re_errstr : NULL);
83 rc = regexec(re_regexp, s);
84 return (re_goterr ? -1 : rc);
94 re_errstr = strdup(s);