Module: TimeUtil

Included in:
IceCube
Defined in:
lib/ice_cube/time_util.rb

Constant Summary collapse

LeapYearMonthDays = 
[31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
CommonYearMonthDays = 
[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

Class Method Summary collapse

Class Method Details

.days_in_month(date) ⇒ Object 



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# File 'lib/ice_cube/time_util.rb', line 27

def self.days_in_month(date)
  is_leap?(date) ? LeapYearMonthDays[date.month - 1] : CommonYearMonthDays[date.month - 1]
end

.days_in_year(date) ⇒ Object 



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# File 'lib/ice_cube/time_util.rb', line 23

def self.days_in_year(date)
  is_leap?(date) ? 366 : 365
end

.ical_duration(duration) ⇒ Object 



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# File 'lib/ice_cube/time_util.rb', line 39

def self.ical_duration(duration)
  hours = duration / 3600; duration %= 3600
  minutes = duration / 60; duration %= 60
  repr = ''
  repr << "#{hours}H" if hours > 0
  repr << "#{minutes}M" if minutes > 0
  repr << "#{duration}S" if duration > 0
  "PT#{repr}"
end

.ical_format(time) ⇒ Object 



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# File 'lib/ice_cube/time_util.rb', line 31

def self.ical_format(time)
  if time.utc?
    ":#{time.strftime('%Y%m%dT%H%M%SZ')}" # utc time
  else
    ";TZID=#{time.strftime('%Z:%Y%m%dT%H%M%S')}" # local time specified
  end
end

.is_leap?(date) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ice_cube/time_util.rb', line 19

def self.is_leap?(date)
  (date.year % 4 == 0 && date.year % 100 != 0) || (date.year % 400 == 0)
end

.serializable_time(time) ⇒ Object

this method exists because ActiveSupport will serialize TimeWithZone’s in collections in UTC time instead of their local time. if time is a TimeWithZone, we move it to a DateTime Note: When converting to datetime, you microseconds get set to 0



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# File 'lib/ice_cube/time_util.rb', line 11

def self.serializable_time(time)
  if time.respond_to?(:to_datetime)
    time.to_datetime
  else
    time
  end
end