1/* See LICENSE file for copyright and license details. */
 2#include <stdarg.h>
 3#include <stdio.h>
 4#include <stdlib.h>
 5#include <string.h>
 6
 7#include "../util.h"
 8
 9char *argv0;
10
11void
12eprintf(const char *fmt, ...)
13{
14	va_list ap;
15
16	va_start(ap, fmt);
17	xvprintf(fmt, ap);
18	va_end(ap);
19
20	exit(1);
21}
22
23void
24enprintf(int status, const char *fmt, ...)
25{
26	va_list ap;
27
28	va_start(ap, fmt);
29	xvprintf(fmt, ap);
30	va_end(ap);
31
32	exit(status);
33}
34
35void
36weprintf(const char *fmt, ...)
37{
38	va_list ap;
39
40	va_start(ap, fmt);
41	xvprintf(fmt, ap);
42	va_end(ap);
43}
44
45void
46xvprintf(const char *fmt, va_list ap)
47{
48	if (argv0 && strncmp(fmt, "usage", strlen("usage")))
49		fprintf(stderr, "%s: ", argv0);
50
51	vfprintf(stderr, fmt, ap);
52
53	if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
54		fputc(' ', stderr);
55		perror(NULL);
56	}
57}