Object
A 'cron line' is a line in the sense of a crontab (man 5 crontab) file line.
# File lib/rufus/sc/cronline.rb, line 47 def initialize (line) super() @original = line items = line.split unless items.length == 5 or items.length == 6 raise( "cron '#{line}' string should hold 5 or 6 items, not #{items.length}") end offset = items.length - 5 @seconds = offset == 1 ? parse_item(items[0], 0, 59) : [ 0 ] @minutes = parse_item(items[0 + offset], 0, 59) @hours = parse_item(items[1 + offset], 0, 24) @days = parse_item(items[2 + offset], 1, 31) @months = parse_item(items[3 + offset], 1, 12) @weekdays = parse_weekdays(items[4 + offset]) end
Returns true if the given time matches this cron line.
# File lib/rufus/sc/cronline.rb, line 73 def matches? (time) time = Time.at(time) unless time.kind_of?(Time) return false unless sub_match?(time.sec, @seconds) return false unless sub_match?(time.min, @minutes) return false unless sub_match?(time.hour, @hours) return false unless sub_match?(time.day, @days) return false unless sub_match?(time.month, @months) return false unless sub_match?(time.wday, @weekdays) true end
Returns the next time that this cron line is supposed to 'fire'
This is raw, 3 secs to iterate over 1 year on my macbook :( brutal. (Well, I was wrong, takes 0.001 sec on 1.8.7 and 1.9.1)
This method accepts an optional Time parameter. It's the starting point for the 'search'. By default, it's Time.now
Note that the time instance returned will be in the same time zone that the given start point Time (thus a result in the local time zone will be passed if no start time is specified (search start time set to Time.now))
>> Rufus::CronLine.new('30 7 * * *').next_time( Time.mktime(2008,10,24,7,29) ) => Fri Oct 24 07:30:00 -0500 2008 >> Rufus::CronLine.new('30 7 * * *').next_time( Time.utc(2008,10,24,7,29) ) => Fri Oct 24 07:30:00 UTC 2008 >> Rufus::CronLine.new('30 7 * * *').next_time( Time.utc(2008,10,24,7,29) ).localtime => Fri Oct 24 02:30:00 -0500 2008
(Thanks to K Liu for the note and the examples)
# File lib/rufus/sc/cronline.rb, line 121 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
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