1/*
2 * Copyright (c) 2017 Nicholas Marriott <nicholas.marriott@gmail.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
14 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <sys/types.h>
18
19#include <errno.h>
20#include <stdarg.h>
21#include <stdlib.h>
22#include <stdio.h>
23#include <string.h>
24
25#include "compat.h"
26
27void
28err(int eval, const char *fmt, ...)
29{
30	va_list	 ap;
31	int	 saved_errno = errno;
32
33	fprintf(stderr, "%s: ", getprogname());
34
35	va_start(ap, fmt);
36	if (fmt != NULL) {
37		vfprintf(stderr, fmt, ap);
38		fprintf(stderr, ": ");
39	}
40	va_end(ap);
41
42	fprintf(stderr, "%s\n", strerror(saved_errno));
43	exit(eval);
44}
45
46void
47errx(int eval, const char *fmt, ...)
48{
49	va_list	 ap;
50
51	fprintf(stderr, "%s: ", getprogname());
52
53	va_start(ap, fmt);
54	if (fmt != NULL)
55		vfprintf(stderr, fmt, ap);
56	va_end(ap);
57
58	putc('\n', stderr);
59	exit(eval);
60}
61
62void
63warn(const char *fmt, ...)
64{
65	va_list	 ap;
66	int	 saved_errno = errno;
67
68	fprintf(stderr, "%s: ", getprogname());
69
70	va_start(ap, fmt);
71	if (fmt != NULL) {
72		vfprintf(stderr, fmt, ap);
73		fprintf(stderr, ": ");
74	}
75	va_end(ap);
76
77	fprintf(stderr, "%s\n", strerror(saved_errno));
78}
79
80void
81warnx(const char *fmt, ...)
82{
83	va_list	 ap;
84
85	fprintf(stderr, "%s: ", getprogname());
86
87	va_start(ap, fmt);
88	if (fmt != NULL)
89		vfprintf(stderr, fmt, ap);
90	va_end(ap);
91
92	putc('\n', stderr);
93}
94