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/*
* Countdown timer
*
* Copyright (C) 2014 Tomasz Kramkowski <tk@the-tk.com>
*
* This program is free software. It is licensed under version 3 of the
* GNU General Public License.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [http://www.gnu.org/licenses/].
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
unsigned long int get_seconds(char *);
void usage(char *cmd)
{
printf("Usage:\n"
"\t%s <n>{s,m,h,D,M,Y} ...\n", cmd);
}
int main(int argc, char **argv)
{
if (argc < 2) {
printf("Not enough arguments.\n");
usage(argv[0]);
exit(1);
}
unsigned long int total_seconds = 0;
for (int i = 1; i < argc; i++)
total_seconds += get_seconds(argv[i]);
printf("Total time: %lu second(s).\nStarted at: %d\n", total_seconds, time(NULL));
sleep(total_seconds);
printf("Ended at: %d\n", time(NULL));
while (1) {
printf("Ring!\a\n");
sleep(1);
}
return 0;
}
unsigned long int get_seconds(char *code)
{
int length = strlen(code);
if (length < 2) {
return 0;
}
int multiplier = 0;
char suffix = code[length - 1];
switch (suffix) {
case 's': multiplier = 1; break; // 1 second
case 'm': multiplier = 60; break; // 1 minute
case 'h': multiplier = 3600; break; // 1 hour
case 'D': multiplier = 86400; break; // 1 day
case 'M': multiplier = 2629746; break; // 30.4368 days
case 'Y': multiplier = 31556940; break; // 365.242 days
default : return 0;
}
char value[length + 1];
strncpy(value, code, length + 1);
value[length - 1] = '\0';
return strtoul(value, NULL, 10) * multiplier;
}
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