Module: Icalendar::TimezoneTransition

Included in:
TZInfo::TimezoneTransition, TZInfo::TimezoneTransitionInfo
Defined in:
lib/icalendar/tzinfo.rb

Instance Method Summary collapse

Instance Method Details

#dtstart ⇒ Object 



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# File 'lib/icalendar/tzinfo.rb', line 80

def dtstart
  (respond_to?(:local_start_at) ? local_start_at : local_start).to_datetime.strftime '%Y%m%dT%H%M%S'
end

#offset_abbreviation ⇒ Object 



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# File 'lib/icalendar/tzinfo.rb', line 61

def offset_abbreviation
  offset.abbreviation.to_s
end

#offset_from ⇒ Object 



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# File 'lib/icalendar/tzinfo.rb', line 53

def offset_from
  previous_offset.ical_offset
end

#offset_to ⇒ Object 



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# File 'lib/icalendar/tzinfo.rb', line 57

def offset_to
  offset.ical_offset
end

#rrule ⇒ Object 



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# File 'lib/icalendar/tzinfo.rb', line 65

def rrule
  start = (respond_to?(:local_start_at) ? local_start_at : local_start).to_datetime
  # this is somewhat of a hack, but seems to work ok
  # assumes that no timezone transition is in law as "4th X of the month"
  # but only as 1st X, 2nd X, 3rd X, or Last X
  start_week = ((start.day - 1) / 7).to_i + 1
  start_week = (start_week > 3) ? -1 : start_week
  [sprintf(
    'FREQ=YEARLY;BYMONTH=%d;BYDAY=%d%s',
    start.month,
    start_week,
    start.strftime('%a').upcase[0,2]
  )]
end