97 lines
3.0 KiB
C
97 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[] = "@(#)regex.c 5.1 (Berkeley) 3/29/92";
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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 <regexp.h>
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#include <string.h>
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#include <stdlib.h>
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#include <string.h>
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static regexp *re_regexp;
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static int re_goterr;
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static char *re_errstr;
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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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if (s == NULL || *s == '\0') {
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if (re_regexp == NULL)
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return "no previous regular expression";
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return (NULL);
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}
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if (re_regexp)
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free(re_regexp);
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if (re_errstr)
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free(re_errstr);
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re_goterr = 0;
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re_regexp = regcomp(s);
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return (re_goterr ? re_errstr : 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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int rc;
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re_goterr = 0;
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rc = regexec(re_regexp, s);
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return (re_goterr ? -1 : rc);
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}
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void
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regerror(s)
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const char *s;
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{
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re_goterr = 1;
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if (re_errstr)
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free(re_errstr);
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re_errstr = strdup(s);
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}
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