Blob


1 /*
2 * Copyright (c) 2021 Omar Polo <op@omarpolo.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 USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
17 #include <errno.h>
18 #include <stdarg.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
23 static void vwarn_impl(const char*, va_list);
24 static void vwarnx_impl(const char*, va_list);
26 static void
27 vwarn_impl(const char *fmt, va_list ap)
28 {
29 fprintf(stderr, "%s: ", getprogname());
30 vfprintf(stderr, fmt, ap);
31 fprintf(stderr, ": %s\n", strerror(errno));
32 }
34 static void
35 vwarnx_impl(const char *fmt, va_list ap)
36 {
37 fprintf(stderr, "%s: ", getprogname());
38 vfprintf(stderr, fmt, ap);
39 fprintf(stderr, "\n");
40 }
42 void
43 err(int ret, const char *fmt, ...)
44 {
45 va_list ap;
47 va_start(ap, fmt);
48 vwarn_impl(fmt, ap);
49 va_end(ap);
50 exit(ret);
51 }
53 void
54 errx(int ret, const char *fmt, ...)
55 {
56 va_list ap;
58 va_start(ap, fmt);
59 vwarnx_impl(fmt, ap);
60 va_end(ap);
61 exit(ret);
62 }
64 void
65 warn(const char *fmt, ...)
66 {
67 va_list ap;
69 va_start(ap, fmt);
70 vwarn_impl(fmt, ap);
71 va_end(ap);
72 }
74 void
75 warnx(const char *fmt, ...)
76 {
77 va_list ap;
79 va_start(ap, fmt);
80 vwarnx_impl(fmt, ap);
81 va_end(ap);
82 }