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
27 void
err(int eval,const char * fmt,...)28 err(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
46 void
errx(int eval,const char * fmt,...)47 errx(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
62 void
warn(const char * fmt,...)63 warn(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
80 void
warnx(const char * fmt,...)81 warnx(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