1 /*
2  * Copyright (c) 2022 Josh Rickmar <jrick@zettaport.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 <sys/time.h>
18 #include <sys/types.h>
19 
20 #include <stdio.h>
21 
22 #include "got_date.h"
23 
24 void
25 got_date_format_gmtoff(char *buf, size_t sz, time_t gmtoff)
26 {
27 	long long h, m;
28 	char sign = '+';
29 
30 	if (gmtoff < 0) {
31 		sign = '-';
32 		gmtoff = -gmtoff;
33 	}
34 
35 	h = (long long)gmtoff / 3600;
36 	m = ((long long)gmtoff - h*3600) / 60;
37 	snprintf(buf, sz, "%c%02lld%02lld", sign, h, m);
38 }