sbase/date.c

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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
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#include <unistd.h>
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#include "util.h"
int
main(int argc, char *argv[])
{
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char buf[BUFSIZ], c;
char *end, *fmt = "%c";
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struct tm *now = NULL;
time_t t;
t = time(NULL);
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while((c = getopt(argc, argv, "d:")) != -1)
switch(c) {
case 'd':
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t = strtol(optarg, &end, 0);
if(*end != '\0')
eprintf("%s: not a number\n", optarg);
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break;
default:
exit(EXIT_FAILURE);
}
if(optind < argc && argv[optind][0] == '+')
fmt = &argv[optind][1];
if(!(now = localtime(&t)))
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eprintf("localtime failed\n");
strftime(buf, sizeof buf, fmt, now);
puts(buf);
return EXIT_SUCCESS;
}