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path: root/util/sbase/libutil/eprintf.c
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/* See LICENSE file for copyright and license details. */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../util.h"

char *argv0;

void
eprintf(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	xvprintf(fmt, ap);
	va_end(ap);

	exit(1);
}

void
enprintf(int status, const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	xvprintf(fmt, ap);
	va_end(ap);

	exit(status);
}

void
weprintf(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	xvprintf(fmt, ap);
	va_end(ap);
}

void
xvprintf(const char *fmt, va_list ap)
{
	if (argv0 && strncmp(fmt, "usage", strlen("usage")))
		fprintf(stderr, "%s: ", argv0);

	vfprintf(stderr, fmt, ap);

	if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
		fputc(' ', stderr);
		perror(NULL);
	}
}