46 lines
815 B
C
46 lines
815 B
C
#include <X11/Xlib.h>
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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 <unistd.h>
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#include <string.h>
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void show(char *prefix, struct tm *tm)
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{
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char s[6];
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strftime(s, sizeof(s), "%H:%M", tm);
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printf("%s%s\n", prefix, s);
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fflush(stdout);
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}
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int main(int argc, char **argv) {
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int h, m, init = 60, opt;
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time_t t;
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struct tm *tm;
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char *prefix = "";
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while ((opt = getopt(argc, argv, "p:")) != -1) {
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switch (opt) {
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case 'p':
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prefix = optarg;
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break;
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default:
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fprintf(stderr, "Usage: %s [-p PREFIX]\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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}
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while (1) {
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t = time(NULL);
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tm = localtime(&t);
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if (tm->tm_hour != h || tm->tm_min != m || init > 0) {
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show(prefix, tm);
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h = tm->tm_hour;
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m = tm->tm_min;
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init = (init > 0) ? init - 1 : 0;
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}
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sleep(1);
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}
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return 1;
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}
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