Class: When::Parts::Timezone

Inherits:
Object
  • Object
show all
Extended by:
Resource::Pool
Includes:
Base
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

Defined Under Namespace

Modules: Base

Instance Attribute Summary collapse

Attributes included from Base

#daylight, #difference, #standard

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Resource::Pool

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

Methods included from Resource::Synchronize

#synchronize

Methods included from Base

#^

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 137

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
  dst, std  = _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 

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# File 'lib/when_exe/parts/timezone.rb', line 216

def method_missing(name, *args, &block)
  self.class.module_eval %Q{
    def #{name}(*args, &block)
      timezone.send("#{name}", *args, &block)
    end
  } unless When::Parts::MethodCash.escape(name)
  timezone.send(name, *args, &block)
end

Instance Attribute Details

#indicesArray<When::Coordinates::Index> (readonly)

時分秒のインデクス


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# File 'lib/when_exe/parts/timezone.rb', line 131

def indices
  @indices
end

#timezoneTZInfo::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 101

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 60

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

._getObject


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# File 'lib/when_exe/parts/timezone.rb', line 52

alias :_get :[]

.tz_infoHash

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 73

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(time) ⇒ Object


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# File 'lib/when_exe/parts/timezone.rb', line 175

def _daylight(time)
  frame, cal_date, clk_time = time
  clocks = {}
  if clk_time
    time    = frame.to_universal_time(cal_date, clk_time, @standard)
    offsets = _offsets((time/When::TM::Duration::SECOND).floor)
    offsets.each do |offset|
      clocks[offset] ||= When::TM::Clock.new({:zone=>offset, :tz_prop=>self})
      return clocks[offsets[0]] if @timezone.period_for_utc(
        (frame.to_universal_time(cal_date, clk_time, clocks[offset])/When::TM::Duration::SECOND).floor).dst?
    end
  end
  offset = @timezone.period_for_utc((time/When::TM::Duration::SECOND).floor).utc_total_offset
  clocks[offset] || When::TM::Clock.new({:zone=>offset, :tz_prop=>self})
end

#_need_validateObject


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# File 'lib/when_exe/parts/timezone.rb', line 192

def _need_validate
  true
end

#labelString

ユニーク識別名

Returns:


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# File 'lib/when_exe/parts/timezone.rb', line 105

def label
  @timezone.identifier
end

#latitudeRational

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 117

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

#locationWhen::Coordinates::Spatial

時間帯を代表する都市の空間位置


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# File 'lib/when_exe/parts/timezone.rb', line 123

def location
  return @location if @location
  tzinfo = self.class.tz_info[label]
  @location = When.Resource("_l:long=#{tzinfo.longitude.to_f}&lat=#{tzinfo.latitude.to_f}&label=#{label}")
end

#longitudeRational

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 111

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