cron_schedule

A cron expression parser, adapted for blockchain environments..

```rust 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.