class Rufus::CronLine

(Thanks to K Liu for the note and the examples)

=> Fri Oct 24 02:30:00 -0500 2008
>> Rufus::CronLine.new('30 7 * * *').next_time( Time.utc(2008,10,24,7,29) ).localtime

=> Fri Oct 24 07:30:00 UTC 2008
>> Rufus::CronLine.new('30 7 * * *').next_time( Time.utc(2008,10,24,7,29) )

=> Fri Oct 24 07:30:00 -0500 2008
>> Rufus::CronLine.new('30 7 * * *').next_time( Time.mktime(2008,10,24,7,29) )

Time.now))
be passed if no start time is specified (search start time set to
the given start point Time (thus a result in the local time zone will
Note that the time instance returned will be in the same time zone that

for the 'search'. By default, it's Time.now
This method accepts an optional Time parameter. It's the starting point

This is raw, 3 secs to iterate over 1 year on my macbook :( brutal.

Returns the next time that this cron line is supposed to 'fire'

def next_time time=Time.now
  time -= time.usec * 1e-6
  time += 1
  loop do
    unless date_match? time
      time += (24 - time.hour) * 3600 - time.min * 60 - time.sec
      next
    end
    unless sub_match? time.hour, @hours
      time += (60 - time.min) * 60 - time.sec
      next
    end
    unless sub_match? time.min, @minutes
      time += 60 - time.sec
      next
    end
    unless sub_match? time.sec, @seconds
      time += 1
      next
    end
    break
  end
  time
end