xref: /freebsd/usr.bin/sed/misc.c (revision 9d5abbddbf03791c777fed86500976ea3dd19245)
19b50d902SRodney W. Grimes /*-
29b50d902SRodney W. Grimes  * Copyright (c) 1992 Diomidis Spinellis.
39b50d902SRodney W. Grimes  * Copyright (c) 1992, 1993
49b50d902SRodney W. Grimes  *	The Regents of the University of California.  All rights reserved.
59b50d902SRodney W. Grimes  *
69b50d902SRodney W. Grimes  * This code is derived from software contributed to Berkeley by
79b50d902SRodney W. Grimes  * Diomidis Spinellis of Imperial College, University of London.
89b50d902SRodney W. Grimes  *
99b50d902SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
109b50d902SRodney W. Grimes  * modification, are permitted provided that the following conditions
119b50d902SRodney W. Grimes  * are met:
129b50d902SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
139b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
149b50d902SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
159b50d902SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
169b50d902SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
179b50d902SRodney W. Grimes  * 3. All advertising materials mentioning features or use of this software
189b50d902SRodney W. Grimes  *    must display the following acknowledgement:
199b50d902SRodney W. Grimes  *	This product includes software developed by the University of
209b50d902SRodney W. Grimes  *	California, Berkeley and its contributors.
219b50d902SRodney W. Grimes  * 4. Neither the name of the University nor the names of its contributors
229b50d902SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
239b50d902SRodney W. Grimes  *    without specific prior written permission.
249b50d902SRodney W. Grimes  *
259b50d902SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
269b50d902SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
279b50d902SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
289b50d902SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
299b50d902SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
309b50d902SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
319b50d902SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
329b50d902SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
339b50d902SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
349b50d902SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
359b50d902SRodney W. Grimes  * SUCH DAMAGE.
369b50d902SRodney W. Grimes  */
379b50d902SRodney W. Grimes 
38e74bf75fSMark Murray #include <sys/cdefs.h>
39e74bf75fSMark Murray __FBSDID("$FreeBSD$");
40e74bf75fSMark Murray 
419b50d902SRodney W. Grimes #ifndef lint
42e74bf75fSMark Murray static const char sccsid[] = "@(#)misc.c	8.1 (Berkeley) 6/6/93";
4373a08bb2SPhilippe Charnier #endif
449b50d902SRodney W. Grimes 
459b50d902SRodney W. Grimes #include <sys/types.h>
469b50d902SRodney W. Grimes 
4773a08bb2SPhilippe Charnier #include <err.h>
489b50d902SRodney W. Grimes #include <regex.h>
499b50d902SRodney W. Grimes #include <stdio.h>
509b50d902SRodney W. Grimes #include <stdlib.h>
519b50d902SRodney W. Grimes #include <string.h>
529b50d902SRodney W. Grimes 
539b50d902SRodney W. Grimes #include "defs.h"
549b50d902SRodney W. Grimes #include "extern.h"
559b50d902SRodney W. Grimes 
569b50d902SRodney W. Grimes /*
579d5abbddSJens Schweikhardt  * Return a string for a regular expression error passed.  This is overkill,
589b50d902SRodney W. Grimes  * because of the silly semantics of regerror (we can never know the size of
599b50d902SRodney W. Grimes  * the buffer).
609b50d902SRodney W. Grimes  */
619b50d902SRodney W. Grimes char *
629b50d902SRodney W. Grimes strregerror(errcode, preg)
639b50d902SRodney W. Grimes 	int errcode;
649b50d902SRodney W. Grimes 	regex_t *preg;
659b50d902SRodney W. Grimes {
669b50d902SRodney W. Grimes 	static char *oe;
679b50d902SRodney W. Grimes 	size_t s;
689b50d902SRodney W. Grimes 
699b50d902SRodney W. Grimes 	if (oe != NULL)
709b50d902SRodney W. Grimes 		free(oe);
7105018c64STim J. Robbins 	s = regerror(errcode, preg, NULL, 0);
728e33c0a0SDavid E. O'Brien 	if ((oe = malloc(s)) == NULL)
738e33c0a0SDavid E. O'Brien 		err(1, "malloc");
749b50d902SRodney W. Grimes 	(void)regerror(errcode, preg, oe, s);
759b50d902SRodney W. Grimes 	return (oe);
769b50d902SRodney W. Grimes }
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