Updated bundled TZInfo gem to version 0.3.9 for Ruby 1.9 compat

1 files changed, 138 insertions, 0 deletions

diff --git a/activesupport/lib/active_support/vendor/tzinfo-0.3.9/tzinfo/timezone_transition_info.rb b/activesupport/lib/active_support/vendor/tzinfo-0.3.9/tzinfo/timezone_transition_info.rb
new file mode 100644
index 0000000000..3fecb24f0d
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/tzinfo-0.3.9/tzinfo/timezone_transition_info.rb
@@ -0,0 +1,138 @@
+#--
+# Copyright (c) 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 'date'
+require 'tzinfo/time_or_datetime'
+
+module TZInfo
+  # Represents an offset defined in a Timezone data file.
+  class TimezoneTransitionInfo #:nodoc:
+    # The offset this transition changes to (a TimezoneOffsetInfo instance).
+    attr_reader :offset
+    
+    # The offset this transition changes from (a TimezoneOffsetInfo instance).
+    attr_reader :previous_offset
+    
+    # The numerator of the DateTime if the transition time is defined as a 
+    # DateTime, otherwise the transition time as a timestamp.
+    attr_reader :numerator_or_time
+    protected :numerator_or_time
+    
+    # Either the denominotor of the DateTime if the transition time is defined
+    # as a DateTime, otherwise nil. 
+    attr_reader :denominator
+    protected :denominator
+    
+    # Creates a new TimezoneTransitionInfo with the given offset, 
+    # previous_offset (both TimezoneOffsetInfo instances) and UTC time. 
+    # if denominator is nil, numerator_or_time is treated as a number of 
+    # seconds since the epoch. If denominator is specified numerator_or_time
+    # and denominator are used to create a DateTime as follows:
+    # 
+    #  DateTime.new!(Rational.send(:new!, numerator_or_time, denominator), 0, Date::ITALY)
+    #
+    # For performance reasons, the numerator and denominator must be specified
+    # in their lowest form.
+    def initialize(offset, previous_offset, numerator_or_time, denominator = nil)
+      @offset = offset
+      @previous_offset = previous_offset
+      @numerator_or_time = numerator_or_time
+      @denominator = denominator
+      
+      @at = nil
+      @local_end = nil
+      @local_start = nil
+    end
+    
+    # A TimeOrDateTime instance representing the UTC time when this transition
+    # occurs.
+    def at
+      unless @at
+        unless @denominator 
+          @at = TimeOrDateTime.new(@numerator_or_time)
+        else
+          r = Rational.send(:new!, @numerator_or_time, @denominator)
+          
+          # Ruby 1.8.6 introduced new! and deprecated new0.
+          # Ruby 1.9.0 removed new0.
+          # We still need to support new0 for older versions of Ruby.
+          if DateTime.respond_to? :new!
+            dt = DateTime.new!(r, 0, Date::ITALY)
+          else
+            dt = DateTime.new0(r, 0, Date::ITALY)
+          end
+          
+          @at = TimeOrDateTime.new(dt)
+        end
+      end
+      
+      @at
+    end
+    
+    # A TimeOrDateTime instance representing the local time when this transition
+    # causes the previous observance to end (calculated from at using 
+    # previous_offset).
+    def local_end
+      @local_end = at.add_with_convert(@previous_offset.utc_total_offset) unless @local_end      
+      @local_end
+    end
+    
+    # A TimeOrDateTime instance representing the local time when this transition
+    # causes the next observance to start (calculated from at using offset).
+    def local_start
+      @local_start = at.add_with_convert(@offset.utc_total_offset) unless @local_start
+      @local_start
+    end
+    
+    # Returns true if this TimezoneTransitionInfo is equal to the given
+    # TimezoneTransitionInfo. Two TimezoneTransitionInfo instances are 
+    # considered to be equal by == if offset, previous_offset and at are all 
+    # equal.
+    def ==(tti)
+      tti.respond_to?(:offset) && tti.respond_to?(:previous_offset) && tti.respond_to?(:at) &&
+        offset == tti.offset && previous_offset == tti.previous_offset && at == tti.at
+    end
+    
+    # Returns true if this TimezoneTransitionInfo is equal to the given
+    # TimezoneTransitionInfo. Two TimezoneTransitionInfo instances are 
+    # considered to be equal by eql? if offset, previous_offset, 
+    # numerator_or_time and denominator are all equal. This is stronger than ==,
+    # which just requires the at times to be equal regardless of how they were
+    # originally specified.
+    def eql?(tti)
+      tti.respond_to?(:offset) && tti.respond_to?(:previous_offset) &&
+        tti.respond_to?(:numerator_or_time) && tti.respond_to?(:denominator) &&
+        offset == tti.offset && previous_offset == tti.previous_offset &&
+        numerator_or_time == tti.numerator_or_time && denominator == tti.denominator        
+    end
+    
+    # Returns a hash of this TimezoneTransitionInfo instance.
+    def hash
+      @offset.hash ^ @previous_offset.hash ^ @numerator_or_time.hash ^ @denominator.hash
+    end
+    
+    # Returns internal object state as a programmer-readable string.
+    def inspect
+      "#<#{self.class}: #{at.inspect},#{@offset.inspect}>"      
+    end
+  end
+end