1 files changed, 85 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/vendor/tzinfo-0.3.8/tzinfo/timezone_proxy.rb b/activesupport/lib/active_support/vendor/tzinfo-0.3.8/tzinfo/timezone_proxy.rb
new file mode 100644
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+++ b/activesupport/lib/active_support/vendor/tzinfo-0.3.8/tzinfo/timezone_proxy.rb
@@ -0,0 +1,85 @@
+#--
+# Copyright (c) 2005-2006 Philip Ross
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#++
+
+require 'tzinfo/timezone'
+
+module TZInfo
+
+  # A proxy class representing a timezone with a given identifier. TimezoneProxy
+  # inherits from Timezone and can be treated like any Timezone loaded with
+  # Timezone.get.
+  #
+  # The first time an attempt is made to access the data for the timezone, the 
+  # real Timezone is loaded. If the proxy's identifier was not valid, then an 
+  # exception will be raised at this point.  
+  class TimezoneProxy < Timezone
+    # Construct a new TimezoneProxy for the given identifier. The identifier
+    # is not checked when constructing the proxy. It will be validated on the
+    # when the real Timezone is loaded.
+    def self.new(identifier)
+      # Need to override new to undo the behaviour introduced in Timezone#new.
+      tzp = super()
+      tzp.send(:setup, identifier)
+      tzp
+    end
+        
+    # The identifier of the timezone, e.g. "Europe/Paris".
+    def identifier
+      @real_timezone ? @real_timezone.identifier : @identifier
+    end
+    
+    # Returns the TimezonePeriod for the given UTC time. utc can either be
+    # a DateTime, Time or integer timestamp (Time.to_i). Any timezone 
+    # information in utc is ignored (it is treated as a UTC time).        
+    def period_for_utc(utc)            
+      real_timezone.period_for_utc(utc)            
+    end
+    
+    # Returns the set of TimezonePeriod instances that are valid for the given
+    # local time as an array. If you just want a single period, use 
+    # period_for_local instead and specify how abiguities should be resolved.
+    # Returns an empty array if no periods are found for the given time.
+    def periods_for_local(local)
+      real_timezone.periods_for_local(local)
+    end
+    
+    # Dumps this TimezoneProxy for marshalling.
+    def _dump(limit)
+      identifier
+    end
+    
+    # Loads a marshalled TimezoneProxy.
+    def self._load(data)
+      TimezoneProxy.new(data)
+    end
+    
+    private
+      def setup(identifier)
+        @identifier = identifier
+        @real_timezone = nil
+      end  
+    
+      def real_timezone
+        @real_timezone ||= Timezone.get(@identifier)
+      end     
+  end 
+end