date.c

/*
 * Copyright (c) 2022 Josh Rickmar <jrick@zettaport.com>
 *
 * Permission to use, copy, modify, and 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 <sys/time.h>
#include <sys/types.h>

#include <stdio.h>

#include "got_date.h"

void
got_date_format_gmtoff(char *buf, size_t sz, time_t gmtoff)
{
	long long h, m;
	char sign = '+';

	if (gmtoff < 0) {
		sign = '-';
		gmtoff = -gmtoff;
	}

	h = (long long)gmtoff / 3600;
	m = ((long long)gmtoff - h*3600) / 60;
	snprintf(buf, sz, "%c%02lld%02lld", sign, h, m);
}