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  */
16 
17 #include <errno.h>
18 #include <stdio.h>
19 #include <stdarg.h>
20 
21 #include "../config.h"
22 
23 static void vwarn_impl(const char*, va_list);
24 static void vwarnx_impl(const char*, va_list);
25 
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 }
33 
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 }
41 
42 void
43 err(int ret, const char *fmt, ...)
44 {
45 	va_list	ap;
46 
47 	va_start(ap, fmt);
48 	vwarn_impl(fmt, va);
49 	va_end(ap, fmt);
50 	exit(ret);
51 }
52 
53 void
54 errx(int ret, const char *fmt, ...)
55 {
56 	va_list	ap;
57 
58 	va_start(ap, fmt);
59 	vwarnx_impl(fmt, va);
60 	va_end(ap, fmt);
61 	exit(ret);
62 }
63 
64 void
65 warn(const char *fmt, ...)
66 {
67 	va_list	ap;
68 
69 	va_start(ap, fmt);
70 	vwarn_impl(fmt, va);
71 	va_end(ap, fmt);
72 }
73 
74 void
75 warnx(const char *fmt, ...)
76 {
77 	va_list	ap;
78 
79 	va_start(ap, fmt);
80 	vwarnx_impl(fmt, va);
81 	va_end(ap, fmt);
82 }