Parse cron string to schedule and generate previous or next schedule item

Related tags

Utilities dart_easy_cron
Overview

Parse cron string to schedule and generate previous or next schedule item

Parsers

UnixCronParser - implementation unix cron, see https://www.ibm.com/docs/en/db2/11.1?topic=task-unix-cron-format

Usage:

// import library
import 'package:easy_cron/easy_cron.dart';

// create parser instance
final parser = UnixCronParser();

// parse cron time to CronSchedule
final schedule = parser.parse('* * * * *');

// next time
final nextTime = schedule.next();

// previous time
final prevTime = schedule.prev();
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Comments
  • Unable to parse SAT-SUN range

    Unable to parse SAT-SUN range

    Hi, thanks for the simple library! Unfortunately, when trying to parse a cron expression with a SAT-SUN range, it throws an assertion error. For example: UnixCronParser().parse("0 22 * * SAT-SUN") throws Failed assertion: line 160 pos 12: 'lower < higher && lower >= min && higher <= max': is not true.

    Here's a few unit tests which all currently fail

     expect(
      next('0 22 * * SAT-SUN', startAt: "2022-11-24 16:00"),
      equals('2022-11-26 22:00'),
    );
    expect(
      next('0 22 * * 6-7', startAt: "2022-11-26 23:00"),
      equals('2022-11-27 22:00'),
    );
    expect(
      schedule('0 22 * * SAT-SUN').daysOfWeek,
      equals({DateTime.saturday, DateTime.sunday}),
    );
    expect(
      next('0 22 * * SAT-MON', startAt: "2022-11-27 23:00"),
      equals('2022-11-28 22:00'),
    );

    I'll work around this for now by using SAT,SUN instead of SAT-SUN.

    Cheers!

    opened by rockgecko-development 1
Releases(0.9.2)
Owner
Pokhodyun Alexander
Pokhodyun Alexander
GitHub
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