parse-cron-ext

parse-cron-ext is a extension (monkey-patch) for parse-cron 0.1.4, which is the latest version.
siebertm/parse-cron: https://github.com/siebertm/parse-cron

Warning:
All specs written in parse-cron passed, but Use at your own risk.

Installation

Add this line to your application's Gemfile:

gem 'parse-cron-ext'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install parse-cron-ext

Usage

These notations are inspired by AWS Cron Expressions.

You can express...

End of the month by using L notation

  cron_parser = CronParser.new('0 9 L * *')

  time = Time.local(2022, 1, 16, 12, 0)
  cron_parser.next(time)
  # => 2022-01-31 09:00
  
  time = Time.local(2022, 2, 3, 12, 0)
  cron_parser.next(time)
  # => 2022-02-28 09:00
  
  
  # end of March
  cron_parser = CronParser.new('0 9 L 3 *')

  time = Time.local(2022, 2, 3, 12, 0)
  cron_parser.next(time)
  # => 2022-03-31 09:00

Second Sunday, Third Friday...

  # second sunday
  cron_parser = CronParser.new('0 9 * * SUN#2')

  time = Time.local(2022, 1, 3, 12, 0)
  cron_parser.next(time)
  # => 2022-01-09 09:00
  

  # second sunday in march
  cron_parser = CronParser.new('0 9 * 3 SUN#2')

  time = Time.local(2022, 1, 3, 12, 0)
  cron_parser.next(time)
  # => 2022-03-13 09:00

Weekday by using W notation

  # next weekday
  cron_parser = CronParser.new('0 0 * * W')

  time = Time.local(2022, 2, 11, 12, 0)
  cron_parser.next(time)
  # => 2022-02-14 00:00

https://www.timeanddate.com/calendar/

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/a5-stable/parse-cron-ext. This project is intended to be a safe, welcoming space for collaboration!

Any Pull Requests or Issues to improve it will be gladly welcome. I will check them and react as soon as possible.

License

The gem is available as open source under the terms of the MIT License.