#cron-expression #expression-parser

cron_schedule

A cron expression parser, adapted for blockchain environments

7 releases

0.3.1 Sep 26, 2023
0.3.0 Sep 25, 2023
0.2.3 Nov 29, 2022
0.2.2 Sep 15, 2022
0.1.0 Apr 16, 2021

#940 in Parser implementations

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118 downloads per month
Used in 9 crates (2 directly)

MIT license

72KB
2K SLoC

cron_schedule

A cron expression parser, adapted for blockchain environments..

extern crate cron_schedule;
extern crate chrono;

use cron_schedule::Schedule;
use chrono::Utc;
use std::str::FromStr;

fn main() {
  //               sec  min   hour   day of month   month   day of week   year
  let expression = "0   30   9,12,15     1,15       May-Aug  Mon,Wed,Fri  2021/2";
  let schedule = Schedule::from_str(expression).unwrap();
  println!("Upcoming fire times:");
  for datetime in schedule.upcoming().take(10) {
    println!("-> {}", datetime);
  }
}

/*
Upcoming fire times:
-> 2021-06-01 09:30:00 UTC
-> 2021-06-01 12:30:00 UTC
-> 2021-06-01 15:30:00 UTC
-> 2021-06-15 09:30:00 UTC
-> 2021-06-15 12:30:00 UTC
-> 2021-06-15 15:30:00 UTC
-> 2021-08-01 09:30:00 UTC
-> 2021-08-01 12:30:00 UTC
-> 2021-08-01 15:30:00 UTC
-> 2021-08-15 09:30:00 UTC
*/

License

MIT license (LICENSE or http://opensource.org/licenses/MIT)

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be dual licensed as above, without any additional terms or conditions.

Dependencies

~1.9–7MB
~46K SLoC