xref: /illumos-gate/usr/src/cmd/sed/misc.c (revision 66582b606a8194f7f3ba5b3a3a6dca5b0d346361)
1 /*
2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
3  * Copyright (c) 1992 Diomidis Spinellis.
4  * Copyright (c) 1992, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Diomidis Spinellis of Imperial College, University of London.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 4. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include <sys/types.h>
36 
37 #include <err.h>
38 #include <limits.h>
39 #include <regex.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <stdarg.h>
44 
45 #include "defs.h"
46 #include "extern.h"
47 
48 /*
49  * Return a string for a regular expression error passed.  This is overkill,
50  * because of the silly semantics of regerror (we can never know the size of
51  * the buffer).
52  */
53 char *
54 strregerror(int errcode, regex_t *preg)
55 {
56 	static char *oe;
57 	size_t s;
58 
59 	if (oe != NULL)
60 		free(oe);
61 	s = regerror(errcode, preg, NULL, 0);
62 	if ((oe = malloc(s)) == NULL)
63 		err(1, "malloc");
64 	(void) regerror(errcode, preg, oe, s);
65 	return (oe);
66 }
67 
68 void
69 fatal(const char *fmt, ...)
70 {
71 	va_list ap;
72 
73 	(void) fprintf(stderr, "%s: %lu: ", fname, linenum);
74 
75 	va_start(ap, fmt);
76 	(void) vfprintf(stderr, fmt, ap);
77 	va_end(ap);
78 
79 	(void) fputc('\n', stderr);
80 
81 	exit(1);
82 }
83