mat-clockwork-cron 2.8.29

A cron expression parser that's safe to use in the Solana runtime
Documentation
#![deny(rust_2018_idioms)]

//! A cron expression parser and schedule explorer
//! # Example
//! ```
//! use chrono::{
//!     DateTime,
//!     NaiveDateTime,
//!     Utc,
//! };
//! use mat_clockwork_cron::Schedule;
//! 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  2018/2";
//!     let schedule = Schedule::from_str(expression).unwrap();
//!     let ts = 1234567890;
//!     let next_ts = match schedule
//!         .after(&DateTime::<Utc>::from_utc(
//!             NaiveDateTime::from_timestamp(ts, 0),
//!             Utc,
//!         ))
//!         .take(1)
//!         .next()
//!     {
//!         Some(datetime) => Some(datetime.timestamp()),
//!         None => None,
//!     };
//! }
//!
//! /*
//! Upcoming fire times:
//! -> 2018-06-01 09:30:00 UTC
//! -> 2018-06-01 12:30:00 UTC
//! -> 2018-06-01 15:30:00 UTC
//! -> 2018-06-15 09:30:00 UTC
//! -> 2018-06-15 12:30:00 UTC
//! -> 2018-06-15 15:30:00 UTC
//! -> 2018-08-01 09:30:00 UTC
//! -> 2018-08-01 12:30:00 UTC
//! -> 2018-08-01 15:30:00 UTC
//! -> 2018-08-15 09:30:00 UTC
//! */
//! ```

pub mod error;
mod ordinal;
mod parsing;
mod queries;
mod schedule;
mod specifier;
mod time_unit;

pub use crate::{
    schedule::Schedule,
    time_unit::TimeUnitSpec,
};