Class: When::Parts::Timezone

Inherits:
Object
  • Object
show all
Extended by:
Resource::Pool
Defined in:
lib/when_exe/parts/timezone.rb

Overview

TZInfo::Timezone クラスを本ライブラリから使用するためのラッパークラス

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Resource::Pool

[], []=, _pool, _setup_, pool_keys

Methods included from Resource::Synchronize

#synchronize

Constructor Details

#initialize(identifier) ⇒ Timezone

オブジェクト生成

Parameters:

  • identifier (String) —

    識別名 ( “America/New_York” など)



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# File 'lib/when_exe/parts/timezone.rb', line 109

def initialize(identifier)
  @timezone   = TZInfo::Timezone.get(identifier)
  unless TZInfo::TimeOrDateTime.method_defined?(:_to_datetime)
    if TZInfo::RubyCoreSupport.respond_to?(:datetime_new)
      TZInfo::TimeOrDateTime.class_eval %Q{
        alias :_to_datetime :to_datetime
        ::Rational
        def to_datetime
          unless @datetime
            u = usec
            s = u == 0 ? sec : Rational(sec * 1000000 + u, 1000000)
            @datetime = TZInfo::RubyCoreSupport.datetime_new(year, mon, mday, hour, min, s, 0, Date::GREGORIAN)
          end
          @datetime
        end
      }
    else
      TZInfo::TimeOrDateTime.class_eval %Q{
        alias :_to_datetime :to_datetime
        def to_datetime
          @datetime ||= DateTime.new(year, mon, mday, hour, min, sec, 0, Date::GREGORIAN)
        end
      }
    end
  end
  std, dst    = _offsets(Time.now.to_i)
  @standard   = When::TM::Clock.new({:zone=>std, :tz_prop=>self})
  if std == dst
    @daylight   = @standard
    @difference = 0
  else
    @daylight   = When::TM::Clock.new({:zone=>dst, :tz_prop=>self})
    @difference = @standard.universal_time - @daylight.universal_time
  end
  @indices = When::Coordinates::DefaultTimeIndices
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object (private)

その他のメソッド

When::Parts::GeometricComplex で定義されていないメソッドは
処理を first (type: When::TM::(Temporal)Position) に委譲する



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# File 'lib/when_exe/parts/timezone.rb', line 184

def method_missing(name, *args, &block)
  timezone.send(name.to_sym, *args, &block)
end

Instance Attribute Details

#daylight ⇒ When::TM::Clock (readonly)

夏時間帯の時計

Returns:



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# File 'lib/when_exe/parts/timezone.rb', line 77

def daylight
  @daylight
end

#difference ⇒ When::TM:IntervalLength (readonly)

夏時間帯と標準時間帯の時間差

Returns:

  • (When::TM:IntervalLength) 


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# File 'lib/when_exe/parts/timezone.rb', line 81

def difference
  @difference
end

#indices ⇒ Array<When::Coordinates::Index> (readonly)

時分秒のインデクス

Returns:



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# File 'lib/when_exe/parts/timezone.rb', line 103

def indices
  @indices
end

#standard ⇒ When::TM::Clock (readonly)

標準時間帯の時計

Returns:



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# File 'lib/when_exe/parts/timezone.rb', line 73

def standard
  @standard
end

#timezone ⇒ TZInfo::Timezone (readonly)

ラップしている TZInfo::Timezone インスタンス

Returns:

  • (TZInfo::Timezone) 


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# File 'lib/when_exe/parts/timezone.rb', line 69

def timezone
  @timezone
end

Class Method Details

.[](label) ⇒ When::Parts::Timezone Also known as: get

オブジェクト参照

Parameters:

  • label (String) —

    識別名 ( “America/New_York” など)

Returns:



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# File 'lib/when_exe/parts/timezone.rb', line 30

def [](label)
  ref = _get(label)
  return ref if ref
  self[label] = self.new(label)
end

._get ⇒ Object 



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# File 'lib/when_exe/parts/timezone.rb', line 22

alias :_get :[]

.tz_info ⇒ Hash

TZInfo でサポートしている Timezone の連想配列

Returns:

  • (Hash) —

    { String => TZInfo::CountryTimezone }

    String - 時間帯ID
    TZInfo::CountryTimezone - 時間帯オブジェクト(proxy for autoload) 


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# File 'lib/when_exe/parts/timezone.rb', line 43

def tz_info
  return @tz_info if @tz_info
  zones = {}
  TZInfo::Country.all.each do |c|
    c.zone_info.each do |z|
      zones[z.identifier]       ||= {}
      zones[z.identifier][c.code] = z
    end
  end

  @tz_info = {}
  zones.each_pair do |id, hash|
    if hash.keys.size == 1
      @tz_info[id] = hash[hash.keys[0]]
    else
      hash.each_pair do |c, z|
        @tz_info["#{id}(#{c})"] = z
      end
    end
  end
  @tz_info
end

Instance Method Details

#_daylight(zdate = nil) ⇒ Object 



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# File 'lib/when_exe/parts/timezone.rb', line 147

def _daylight(zdate=nil)
  if block_given?
    zdate  = yield(@standard.dup.tap{|clock| clock.tz_prop = nil})
    now    = zdate.to_time.to_i
    clocks = _offsets(now).map {|clock| When::TM::Clock.new({:zone=>clock, :tz_prop=>self})}
    flags  = clocks.map {|z| @timezone.period_for_utc(yield(z.dup.tap{|clock| clock.tz_prop = nil}).to_time.to_i).dst? }
    (flags[0] || flags[1]) ? clocks[1] : clocks[0]
  else
    When::TM::Clock.new({:zone=>@timezone.period_for_utc(zdate.to_time.to_i).utc_total_offset, :tz_prop=>self})
  end
end

#_need_validate ⇒ Object 



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# File 'lib/when_exe/parts/timezone.rb', line 160

def _need_validate
  true
end

#label ⇒ String

ユニーク識別名

Returns:



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# File 'lib/when_exe/parts/timezone.rb', line 85

def label
  @timezone.identifier
end

#latitude ⇒ Rational

時間帯を代表する都市の緯度 / 度

Returns:

  • (Rational) 


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# File 'lib/when_exe/parts/timezone.rb', line 97

def latitude
  self.class.tz_info[label].latitude
end

#longitude ⇒ Rational

時間帯を代表する都市の経度 / 度

Returns:

  • (Rational) 


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# File 'lib/when_exe/parts/timezone.rb', line 91

def longitude
  self.class.tz_info[label].longitude
end