--- /dev/null
+/* Clock test program
+ *
+ * 25-Sep-2018, chris@groessler.org
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+#ifdef __CC65__
+#include <conio.h>
+#include <cc65.h>
+
+static void exitfn(void)
+{
+ if (doesclrscrafterexit()) cgetc();
+}
+#endif /* #ifdef __CC65__ */
+
+static void print_time(void)
+{
+ struct tm *cur_tm;
+ time_t cur_time = time(NULL);
+ if (cur_time == -1) {
+ printf("time() failed: %s\n", strerror(errno));
+ return;
+ }
+ cur_tm = localtime(&cur_time);
+
+ printf("time: %s\n", asctime(cur_tm));
+ // DEBUG:
+ printf("mday=%d mon=%d year=%d\nhour=%d min=%d sec=%d\n", cur_tm->tm_mday, cur_tm->tm_mon, cur_tm->tm_year, cur_tm->tm_hour, cur_tm->tm_min, cur_tm->tm_sec);
+}
+
+int main(int argc, char **argv)
+{
+ static char c;
+ static int s;
+ static struct tm cur_time;
+ static struct timespec new_time;
+
+#ifdef __CC65__
+ atexit(exitfn);
+#endif
+
+ if (argc <= 1) {
+ print_time();
+ return 0;
+ }
+
+ if (argc != 3 || strcasecmp(*(argv + 1), "set")) {
+ printf("usage: CLOCKTST [set DD-MM-YY-HH-MM-SS]\n");
+ return 1;
+ }
+
+ s = sscanf(*(argv + 2), "%d-%d-%d-%d-%d-%d", &cur_time.tm_mday, &cur_time.tm_mon, &cur_time.tm_year, &cur_time.tm_hour, &cur_time.tm_min, &cur_time.tm_sec);
+ if (s != 6 || cur_time.tm_year > 99 /* other input values aren't being verified... */) {
+ printf("invalid time/date format\n");
+ return 1;
+ }
+ --cur_time.tm_mon;
+ if (cur_time.tm_year < 79)
+ cur_time.tm_year += 100; /* adjust century */
+
+ memset(&new_time, 0, sizeof(new_time));
+ new_time.tv_sec = mktime(&cur_time);
+
+ printf("\nyou are about to set the time to\n--> %s\n\nContinue (y/n)?", ctime(&new_time.tv_sec));
+
+ while (c != 'y' && c != 'Y' && c != 'n' && c != 'N') {
+#ifdef __CC65__
+ c = cgetc();
+#else
+ c = getchar();
+#endif
+ }
+ printf("%c\n", c);
+
+ if (c == 'n' || c == 'N') {
+ printf("user abort\n");
+ return 0;
+ }
+
+ s = clock_settime(CLOCK_REALTIME, &new_time);
+ if (s) {
+ printf("clock_settime() failed: %s\n", strerror(errno));
+ return 1;
+ }
+ printf("time set!\n");
+ //DEBUG test begin
+ print_time();
+ //DEBUG test end
+ return 0;
+}
+/* Local Variables: */
+/* c-file-style: "cpg" */
+/* c-basic-offset: 4 */
+/* End: */