94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
/*-
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* Copyright (c) 1992 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* James da Silva at the University of Maryland at College Park.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Compatibility routines that implement the old re_comp/re_exec interface in
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* terms of the regcomp/regexec interface. It's possible that some programs
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* rely on dark corners of re_comp/re_exec and won't work with this version,
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* but most programs should be fine.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char sccsid[] = "from: @(#)regex.c 5.1 (Berkeley) 3/29/92";*/
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static char rcsid[] = "$Id: regex.c,v 1.3 1993/11/11 01:24:50 jtc Exp $";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <regex.h>
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static int compiled_regexp = 0;
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static char errbuf[256];
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static regex_t rp;
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char *
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re_comp(s)
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char *s;
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{
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int eval;
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if (s == NULL)
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return (NULL);
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if (compiled_regexp) {
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regfree(&rp);
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compiled_regexp = 0;
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}
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if ((eval = regcomp(&rp, s, REG_NOSUB)) != 0) {
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regerror (eval, &rp, errbuf, sizeof(errbuf));
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return errbuf;
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}
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compiled_regexp = 1;
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return NULL;
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}
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int
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re_exec(s)
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char *s;
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{
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regmatch_t rm[1];
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int eval;
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if ((eval = regexec(&rp, s, 0, rm, 0)) == 0)
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return 1;
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return eval == REG_NOMATCH ? 0 : -1;
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}
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