Class: Rufus::Scheduler::ZoTime

Inherits:
Object
  • Object
show all
Defined in:
lib/rufus/scheduler/zotime.rb

Overview

Zoning|edTime, whatever.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(s, zone) ⇒ ZoTime

Returns a new instance of ZoTime.



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# File 'lib/rufus/scheduler/zotime.rb', line 38

def initialize(s, zone)

  @seconds = s.to_f
  @zone = zone
end

Instance Attribute Details

#seconds ⇒ Object

Returns the value of attribute seconds.



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# File 'lib/rufus/scheduler/zotime.rb', line 35

def seconds
  @seconds
end

#zone ⇒ Object

Returns the value of attribute zone.



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# File 'lib/rufus/scheduler/zotime.rb', line 36

def zone
  @zone
end

Class Method Details

.envtzable?(s) ⇒ Boolean

DELTA_TZ_REX = /^[+-][0-1]:?[0-5]$/

Returns:

  • (Boolean) 


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# File 'lib/rufus/scheduler/zotime.rb', line 90

def self.envtzable?(s)

  TIMEZONES.include?(s)
end

.is_timezone?(str) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rufus/scheduler/zotime.rb', line 127

def self.is_timezone?(str)

  return false if str == nil
  return false if str == '*'

  return false if str.index('#')
    # "sun#2", etc... On OSX would go all the way to true

  return true if Time.zone_offset(str)

  return !! (::TZInfo::Timezone.get(str) rescue nil) if defined?(::TZInfo)

  return true if TIMEZONES.include?(str)
  return true if TIMEZONEs.include?(str)

  t = ZoTime.new(0, str).time

  return false if t.zone == ''
  return false if t.zone == 'UTC'
  return false if t.utc_offset == 0 && str.start_with?(t.zone)
    # 3 common fallbacks...

  return false if RUBY_PLATFORM.include?('java') && ! envtzable?(str)

  true
end

.parse(str, opts = {}) ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 95

def self.parse(str, opts={})

  if defined?(::Chronic) && t = ::Chronic.parse(str, opts)
    return ZoTime.new(t, ENV['TZ'])
  end

  begin
    DateTime.parse(str)
  rescue
    raise ArgumentError, "no time information in #{o.inspect}"
  end if RUBY_VERSION < '1.9.0'

  zone = nil

  s =
    str.gsub(/\S+/) { |m|
      if envtzable?(m)
        zone ||= m
        ''
      else
        m
      end
    }

  return nil unless zone.nil? || is_timezone?(zone)

  zt = ZoTime.new(0, zone || ENV['TZ'])
  zt.in_zone { zt.seconds = Time.parse(s).to_f }

  zt.seconds == nil ? nil : zt
end

Instance Method Details

#add(s) ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 73

def add(s)

  @seconds += s.to_f
end

#in_zone(&block) ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 154

def in_zone(&block)

  current_timezone = ENV['TZ']
  ENV['TZ'] = @zone

  block.call

ensure

  ENV['TZ'] = current_timezone
end

#substract(s) ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 78

def substract(s)

  @seconds -= s.to_f
end

#time ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 44

def time

  in_zone do

    t = Time.at(@seconds)

    #if t.isdst
    #  t1 = Time.at(@seconds + 3600)
    #  t = t1 if t.zone != t1.zone && t.hour == t1.hour && t.min == t1.min
    #    # ambiguous TZ (getting out of DST)
    #else
    #  t.hour # force t to compute itself
    #end
      #
      # jump out of DST as soon as possible, jumps 1h as seen from UTC

    t.hour # force t to compute itself
      #
      # stay in DST as long as possible, no jump seen from UTC

    t
  end
end

#to_f ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 83

def to_f

  @seconds
end

#utc ⇒ Object 



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# File 'lib/rufus/scheduler/zotime.rb', line 68

def utc

  time.utc
end