e50ee15a9c
1) Update usage as already done in the manpage 2) group and sort local variable declarations 3) Be pedantic about the number of options. Don't just ignore it if argc > 1.
50 lines
786 B
C
50 lines
786 B
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s [-u] [-d time] [+format]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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struct tm *now;
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struct tm *(*tztime)(const time_t *) = localtime;
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time_t t;
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char buf[BUFSIZ], *fmt = "%c", *tz = "local";
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t = time(NULL);
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ARGBEGIN {
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case 'd':
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t = estrtonum(EARGF(usage()), 0, LLONG_MAX);
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break;
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case 'u':
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tztime = gmtime;
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tz = "gm";
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break;
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default:
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usage();
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} ARGEND;
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if (argc) {
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if (argc != 1 || argv[0][0] != '+')
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usage();
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else
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fmt = &argv[0][1];
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}
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if (!(now = tztime(&t)))
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eprintf("%stime failed\n", tz);
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strftime(buf, sizeof(buf), fmt, now);
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puts(buf);
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return 0;
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}
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