Class: When::Parts::Timezone

Inherits:
Object
  • Object
show all
Extended by:
Resource::Pool
Includes:
Base
Defined in:
lib/when_exe/parts/timezone.rb,
lib/when_exe/inspect.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, #standard, #tz_difference

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



151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
 
# File 'lib/when_exe/parts/timezone.rb', line 151

def initialize(identifier)
  @identifier = identifier
  id, query   = identifier.split('?', 2)
  @timezone   = TZInfo::Timezone.get(id.sub(/\(.+?\)\z/,''))
  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)
  options   = query ? Hash[*(query.split('&').map {|item| item.split('=',2)}.flatten)] : {}
  @standard = When::TM::Clock.new(options.merge({:zone=>std, :tz_prop=>self}))
  if std == dst
    @daylight      = @standard
    @tz_difference = 0
  else
    @daylight      = When::TM::Clock.new(options.merge({:zone=>dst, :tz_prop=>self}))
    @tz_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 


240
241
242
243
244
245
246
247
 
# File 'lib/when_exe/parts/timezone.rb', line 240

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

#identifier ⇒ String (readonly) Also known as: label, inspect

ユニーク識別名



111
112
113
 
# File 'lib/when_exe/parts/timezone.rb', line 111

def identifier
  @identifier
end

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

時分秒のインデクス



145
146
147
 
# File 'lib/when_exe/parts/timezone.rb', line 145

def indices
  @indices
end

#timezone ⇒ TZInfo::Timezone (readonly)

ラップしている TZInfo::Timezone インスタンス



107
108
109
 
# File 'lib/when_exe/parts/timezone.rb', line 107

def timezone
  @timezone
end

Class Method Details

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

オブジェクト参照



64
65
66
67
68
69
70
71
 
# File 'lib/when_exe/parts/timezone.rb', line 64

def [](label)
  ref = _get(label)
  return ref if ref
  return nil unless label =~ /\A[A-Z]/i
  self[label] = self.new(label)
rescue NameError
  raise NameError, 'Prease install TZInfo - gem install tzinfo'
end

._get ⇒ Object 



56
 
# File 'lib/when_exe/parts/timezone.rb', line 56

alias :_get :[]

.tz_info ⇒ Hash

TZInfo でサポートしている Timezone の連想配列



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
 
# File 'lib/when_exe/parts/timezone.rb', line 80

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

Instance Method Details

#_daylight(time) ⇒ Object 



192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
 
# File 'lib/when_exe/parts/timezone.rb', line 192

def _daylight(time)
  frame, cal_date, clk_time = time
  clocks  = {}
  options = {}
  %w(border location).each do |attr|
    value = @standard.instance_variable_get("@#{attr}")
    next unless value
    value = value.dup unless value.kind_of?(When::Parts::Resource) && value.registered?
    options[attr] = value
  end
  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(options.merge({: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(options.merge({:zone=>offset, :tz_prop=>self}))
end

#_need_validate ⇒ Object 



216
217
218
 
# File 'lib/when_exe/parts/timezone.rb', line 216

def _need_validate
  true
end

#latitude ⇒ Rational

時間帯を代表する都市の緯度 / 度



123
124
125
 
# File 'lib/when_exe/parts/timezone.rb', line 123

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

#location ⇒ When::Coordinates::Spatial

時間帯を代表する都市の空間位置



129
130
131
132
133
134
135
136
137
138
139
140
141
 
# File 'lib/when_exe/parts/timezone.rb', line 129

def location
  return @location if @location
  city_tz = @timezone
  unless self.class.tz_info[label]
    while city_tz.kind_of?(TZInfo::LinkedTimezone)
      city_tz = TZInfo::Timezone.get(city_tz.send(:info).link_to_identifier)
    end
  end
  tzinfo = self.class.tz_info[city_tz.identifier]
  longitude = When::Coordinates.to_dms(tzinfo.longitude, 'EW')
  latitude  = When::Coordinates.to_dms(tzinfo.latitude,  'NS')
  @location = When.Resource("_l:long=#{longitude}&lat=#{latitude}&label=#{label}")
end

#longitude ⇒ Rational

時間帯を代表する都市の経度 / 度



117
118
119
 
# File 'lib/when_exe/parts/timezone.rb', line 117

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