/*
* snooze - run a command at a particular time
*
- * To the extent possible under law,
- * Christian Neukirchen <chneukirchen@gmail.com>
+ * To the extent possible under law, Leah Neukirchen <leah@vuxu.org>
* has waived all copyright and related or neighboring rights to this work.
* http://creativecommons.org/publicdomain/zero/1.0/
*/
-/*
-##% gcc -Os -Wall -g -o $STEM $FILE -Wextra -Wwrite-strings
-*/
-
#include <sys/stat.h>
#include <sys/types.h>
while (*s) {
switch (*s) {
case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
+ case '5': case '6': case '7': case '8': case '9':
n = parse_int(&s, -offset, bufsiz);
buf[n+offset] = '*';
break;
case '/':
s++;
n0 = n;
- n = parse_int(&s, -offset, bufsiz);
+ if (*s)
+ n = parse_int(&s, -offset, bufsiz);
if (n == 0) // / = *
n = 1;
for (i = n0; i < bufsiz; i += n)
buf[i+offset] = '*';
break;
- case ',':
+ case ',':
s++;
n = 0;
break;
}
char weekday[8] = {0};
-char dayofmonth[31] = {0};
-char month[12] = {0};
-char dayofyear[366] = {0};
-char weekofyear[53] = {0};
+char dayofmonth[32] = {0};
+char month[13] = {0};
+char dayofyear[367] = {0};
+char weekofyear[54] = {0};
char hour[24] = {0};
char minute[60] = {0};
char second[61] = {0};
tm = localtime(&t);
next_day:
- while (!(weekday[tm->tm_wday] == '*'
- && dayofmonth[tm->tm_mday-1] == '*'
- && month[tm->tm_mon] == '*'
- && weekofyear[isoweek(tm)] == '*'
- && dayofyear[tm->tm_yday] == '*')) {
+ while (!(
+ weekday[tm->tm_wday] == '*' &&
+ dayofmonth[tm->tm_mday-1] == '*' &&
+ month[tm->tm_mon] == '*' &&
+ weekofyear[isoweek(tm)-1] == '*' &&
+ dayofyear[tm->tm_yday] == '*')) {
if (month[tm->tm_mon] != '*') {
// if month is not good, step month
tm->tm_mon++;
tm->tm_mday++;
}
+ tm->tm_isdst = -1;
tm->tm_sec = 0;
tm->tm_min = 0;
tm->tm_hour = 0;
t = mktime(tm);
- if (t > from+(365*24*60*60)) // no result within a year
+ tm->tm_isdst = -1;
+
+ if (t > from+(366*24*60*60)) // no result within a year
return -1;
}
int y = tm->tm_yday; // save yday
- while (!(hour[tm->tm_hour] == '*'
- && minute[tm->tm_min] == '*'
- && second[tm->tm_sec] == '*')) {
+ while (!(
+ hour[tm->tm_hour] == '*' &&
+ minute[tm->tm_min] == '*' &&
+ second[tm->tm_sec] == '*')) {
if (hour[tm->tm_hour] != '*') {
tm->tm_hour++;
tm->tm_min = 0;
if (tm->tm_yday != y) // hit a different day, retry...
goto next_day;
}
-
+
return t;
}
return isobuf;
}
-int main(int argc, char *argv[])
+int
+main(int argc, char *argv[])
{
int c;
time_t t;
time_t now = time(0);
+ time_t last = 0;
/* default: every day at 00:00:00 */
memset(weekday, '*', sizeof weekday);
minute[0] = '*';
second[0] = '*';
- while ((c = getopt(argc, argv, "D:W:H:M:S:T:R:d:m:ns:t:vw:")) != -1)
- switch(c) {
+ setvbuf(stdout, 0, _IOLBF, 0);
+
+ while ((c = getopt(argc, argv, "+D:W:H:M:S:T:R:d:m:ns:t:vw:")) != -1)
+ switch (c) {
case 'D': parse(optarg, dayofyear, sizeof dayofyear, -1); break;
case 'W': parse(optarg, weekofyear, sizeof weekofyear, -1); break;
case 'H': parse(optarg, hour, sizeof hour, 0); break;
case 'm': parse(optarg, month, sizeof month, -1); break;
case 'w': parse(optarg, weekday, sizeof weekday, 0);
// special case: sunday is both 0 and 7.
- if (weekday[7] == '*')
+ if (weekday[7] == '*')
weekday[0] = '*';
break;
case 'n': nflag++; break;
case 't': timefile = optarg; break;
case 'R': randdelay = parse_dur(optarg); break;
default:
- fprintf(stderr, "Usage: %s [-nv] [-t timefile] [-T timewait] [-R randdelay] [-s slack]\n"
+ fprintf(stderr, "Usage: %s [-nv] [-t timefile] [-T timewait] [-R randdelay] [-s slack]\n"
" [-d mday] [-m mon] [-w wday] [-D yday] [-W yweek] [-H hour] [-M min] [-S sec] COMMAND...\n"
"Timespec: exact: 1,3,5\n"
" range: 1-7\n"
" every n-th: /10\n", argv[0]);
- exit(2);
- }
+ exit(2);
+ }
time_t start = now + 1;
/* dry-run, just output the next 5 dates. */
int i;
for (i = 0; i < 5; i++) {
- if (t > 0) {
- char weekstr[4];
- struct tm *tm = localtime(&t);
- strftime(weekstr, sizeof weekstr, "%a", tm);
- printf("%s %s %2ldd%3ldh%3ldm%3lds\n",
- isotime(tm),
- weekstr,
- ((t - now) / (60*60*24)),
- ((t - now) / (60*60)) % 24,
- ((t - now) / 60) % 60,
- (t - now) % 60);
- }
+ char weekstr[4];
+ struct tm *tm = localtime(&t);
+ strftime(weekstr, sizeof weekstr, "%a", tm);
+ printf("%s %s %2ldd%3ldh%3ldm%3lds\n",
+ isotime(tm),
+ weekstr,
+ ((t - now) / (60*60*24)),
+ ((t - now) / (60*60)) % 24,
+ ((t - now) / 60) % 60,
+ (t - now) % 60);
t = find_next(t + 1);
+ if (t < 0) {
+ fprintf(stderr,
+ "no satisfying date found within a year.\n");
+ exit(2);
+ }
}
exit(0);
}
while (!alarm_rang) {
now = time(0);
+ if (now < last) {
+ t = find_next(now);
+ if (vflag)
+ printf("Time moved backwards, rescheduled for %s\n", isotime(tm));
+ }
t = mktime(tm);
if (t <= now) {
if (now - t <= slack) // still about time
struct timespec ts;
ts.tv_nsec = 0;
ts.tv_sec = t - now > SLEEP_PHASE ? SLEEP_PHASE : t - now;
+ last = now;
nanosleep(&ts, 0);
// we just iterate again when this exits early
}
projects / user / henk / code / snooze.git / blobdiff