helloworld/vendor/gems/chronic-0.2.2/lib/chronic/repeaters/repeater_month.rb

   1 class Chronic::RepeaterMonth < Chronic::Repeater #:nodoc:
   2   MONTH_SECONDS = 2_592_000 # 30 * 24 * 60 * 60
   3   YEAR_MONTHS = 12
   4
   5   def next(pointer)
   6     super
   7
   8     if !@current_month_start
   9       @current_month_start = offset_by(Time.construct(@now.year, @now.month), 1, pointer)
  10     else
  11       @current_month_start = offset_by(Time.construct(@current_month_start.year, @current_month_start.month), 1, pointer)
  12     end
  13
  14     Chronic::Span.new(@current_month_start, Time.construct(@current_month_start.year, @current_month_start.month + 1))
  15   end
  16
  17   def this(pointer = :future)
  18     super
  19
  20     case pointer
  21     when :future
  22       month_start = Time.construct(@now.year, @now.month, @now.day + 1)
  23       month_end = self.offset_by(Time.construct(@now.year, @now.month), 1, :future)
  24     when :past
  25       month_start = Time.construct(@now.year, @now.month)
  26       month_end = Time.construct(@now.year, @now.month, @now.day)
  27     when :none
  28       month_start = Time.construct(@now.year, @now.month)
  29       month_end = self.offset_by(Time.construct(@now.year, @now.month), 1, :future)
  30     end
  31
  32     Chronic::Span.new(month_start, month_end)
  33   end
  34
  35   def offset(span, amount, pointer)
  36     Chronic::Span.new(offset_by(span.begin, amount, pointer), offset_by(span.end, amount, pointer))
  37   end
  38
  39   def offset_by(time, amount, pointer)
  40     direction = pointer == :future ? 1 : -1
  41
  42     amount_years = direction * amount / YEAR_MONTHS
  43     amount_months = direction * amount % YEAR_MONTHS
  44
  45     new_year = time.year + amount_years
  46     new_month = time.month + amount_months
  47     if new_month > YEAR_MONTHS
  48       new_year += 1
  49       new_month -= YEAR_MONTHS
  50     end
  51     Time.construct(new_year, new_month, time.day, time.hour, time.min, time.sec)
  52   end
  53
  54   def width
  55     MONTH_SECONDS
  56   end
  57
  58   def to_s
  59     super << '-month'
  60   end
  61 end