5 releases (3 breaking)
new 0.4.0 | Sep 18, 2024 |
---|---|
0.3.1 | Sep 18, 2024 |
0.3.0 | Sep 12, 2024 |
0.2.0 | Sep 11, 2024 |
0.1.0 | Sep 11, 2024 |
#278 in Hardware support
462 downloads per month
39KB
686 lines
Crontab Expression Parser and Driver
Overview
This library provides functionalities to calculate the next timestamp matching a given crontab pattern.
Usage
cargo add cronexpr
fn main() {
use std::str::FromStr;
// with jiff timestamp
let timestamp = jiff::Timestamp::from_str("2024-01-01T00:00:00+08:00").unwrap();
let crontab = cronexpr::Crontab::from_str("0 0 1 1 * Asia/ Shanghai").unwrap();
let driver = crontab.drive_with_timestamp(timestamp);
assert_eq!(driver.find_next_timestamp().unwrap().as_millisecond(), 1735660800000);
// for compatibility, bridge by timestamp milliseconds (crontab support at most second level so it's fine)
let crontab: cronexpr::Crontab = "2 4 * * * Asia/ Shanghai".parse().unwrap();
let driver = crontab.drive_with_timestamp_millis(1704038400000).unwrap();
assert_eq!(driver.find_next_timestamp_millis().unwrap(), 1704052920000);
// can also be used as an iterator
let crontab: cronexpr::Crontab = "2 4 * * * Asia/ Shanghai".parse().unwrap();
let mut driver = crontab.drive_with_timestamp_millis(1704038400000).unwrap();
assert_eq!(driver.next_timestamp_millis().unwrap(), 1704052920000);
assert_eq!(driver.next_timestamp_millis().unwrap(), 1704139320000);
assert_eq!(driver.next_timestamp_millis().unwrap(), 1704225720000);
}
Dependencies
~4MB
~67K SLoC