sbase/date.c

49 lines
763 B
C

/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [-u] [-d time] [+format]\n", argv0);
}
int
main(int argc, char *argv[])
{
struct tm *now;
time_t t;
char buf[BUFSIZ], *fmt = "%c";
t = time(NULL);
ARGBEGIN {
case 'd':
t = estrtonum(EARGF(usage()), 0, LLONG_MAX);
break;
case 'u':
if (setenv("TZ", "UTC0", 1) < 0)
eprintf("setenv:");
break;
default:
usage();
} ARGEND
if (argc) {
if (argc != 1 || argv[0][0] != '+')
usage();
else
fmt = &argv[0][1];
}
if (!(now = localtime(&t)))
eprintf("localtime:");
strftime(buf, sizeof(buf), fmt, now);
puts(buf);
return fshut(stdout, "<stdout>");
}