Contents

module Timing
  module Helpers

    MONTH_DAYS = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

    def beginning_of_hour(time)
      TimeInZone.parse time.strftime('%Y-%m-%d %H:00:00 %z')
    end

    def end_of_hour(time)
      TimeInZone.parse time.strftime('%Y-%m-%d %H:59:59 %z')
    end

    def beginning_of_day(time)
      TimeInZone.parse time.strftime('%Y-%m-%d 00:00:00 %z')
    end

    def end_of_day(time)
      TimeInZone.parse time.strftime('%Y-%m-%d 23:59:59 %z')
    end

    def beginning_of_week(time)
      date = beginning_of_day time
      date - Interval.days(date.wday)
    end

    def end_of_week(time)
      date = end_of_day time
      date + Interval.days(6 - date.wday)
    end

    def beginning_of_month(time)
      TimeInZone.parse time.strftime('%Y-%m-01 00:00:00 %z')
    end

    def end_of_month(time)
      TimeInZone.parse time.strftime("%Y-%m-#{days_in_month(time.month, time.year)} 23:59:59 %z")
    end

    def beginning_of_year(time)
      TimeInZone.parse time.strftime('%Y-01-01 00:00:00 %z')
    end

    def end_of_year(time)
      TimeInZone.parse time.strftime('%Y-12-31 23:59:59 %z')
    end

    def days_in_month(month, year=nil)
      return 29 if month == 2 && Date.leap?(year || TimeInZone.now.year)
      MONTH_DAYS[month-1]
    end

    def months_ago(time, count)
      diff = (time.to_datetime - (time.to_datetime << count)).to_f
      TimeInZone.new time - Interval.days(diff), time.utc_offset
    end

    def months_after(time, count)
      diff = ((time.to_datetime >> count) - time.to_datetime).to_f
      TimeInZone.new time + Interval.days(diff), time.utc_offset
    end

    def years_ago(time, count)
      months_ago time, count * 12
    end

    def years_after(time, count)
      months_after time, count * 12
    end

  end
end

Version data entries

14 entries across 14 versions & 1 rubygems

Version	Path
timing-0.2.7	lib/timing/helpers.rb
timing-0.2.6	lib/timing/helpers.rb
timing-0.2.5	lib/timing/helpers.rb
timing-0.2.4	lib/timing/helpers.rb
timing-0.2.3	lib/timing/helpers.rb
timing-0.2.2	lib/timing/helpers.rb
timing-0.2.0	lib/timing/helpers.rb
timing-0.1.3	lib/timing/helpers.rb
timing-0.1.2	lib/timing/helpers.rb
timing-0.1.1	lib/timing/helpers.rb
timing-0.1.0	lib/timing/helpers.rb
timing-0.0.11	lib/timing/helpers.rb
timing-0.0.10	lib/timing/helpers.rb
timing-0.0.9	lib/timing/helpers.rb