/*
 * util.c -- various utilities
 *
 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
 * 
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <assert.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdnoreturn.h>
#include <string.h>
#include <time.h>

#include "util.h"

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

	va_start(ap, fmt);
	vfprintf(stderr, fmt, ap);
	va_end(ap);

	exit(1);
}

char *
estrdup(const char *str)
{
	assert(str);

	char *ret;
	size_t length = strlen(str);

	if (!(ret = calloc(1, length + 1)))
		die(strerror(errno));

	return strcpy(ret, str);
}

const char *
bprintf(const char *fmt, ...)
{
	static char buf[BUFSIZ];
	va_list ap;

	va_start(ap, fmt);
	vsnprintf(buf, sizeof (buf), fmt, ap);
	va_end(ap);

	return buf;
}

const char *
bstrftime(const char *fmt, const struct tm *tm)
{
	static char buf[BUFSIZ];

	strftime(buf, sizeof (buf), fmt, tm);

	return buf;
}