Froze rails gems

[depot.git] / vendor / rails / activesupport / lib / active_support / core_ext / date_time / conversions.rb

diff --git a/vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb b/vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb
new file mode 100644 (file)
index 0000000..c0175a5
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+++ b/vendor/rails/activesupport/lib/active_support/core_ext/date_time/conversions.rb
@@ -0,0 +1,96 @@
+module ActiveSupport #:nodoc:
+  module CoreExtensions #:nodoc:
+    module DateTime #:nodoc:
+      # Converting datetimes to formatted strings, dates, and times.
+      module Conversions
+        def self.append_features(base) #:nodoc:
+          base.class_eval do
+            alias_method :default_inspect, :inspect
+            alias_method :to_default_s, :to_s unless (instance_methods(false) & [:to_s, 'to_s']).empty?
+
+            # Ruby 1.9 has DateTime#to_time which internally relies on Time. We define our own #to_time which allows
+            # DateTimes outside the range of what can be created with Time.
+            remove_method :to_time if instance_methods.include?(:to_time)
+          end
+
+          super
+
+          base.class_eval do
+            alias_method :to_s, :to_formatted_s
+            alias_method :inspect, :readable_inspect
+          end
+        end
+
+        # Convert to a formatted string. See Time::DATE_FORMATS for predefined formats.
+        # 
+        # This method is aliased to <tt>to_s</tt>.
+        # 
+        # === Examples:
+        #   datetime = DateTime.civil(2007, 12, 4, 0, 0, 0, 0)   # => Tue, 04 Dec 2007 00:00:00 +0000
+        # 
+        #   datetime.to_formatted_s(:db)            # => "2007-12-04 00:00:00"
+        #   datetime.to_s(:db)                      # => "2007-12-04 00:00:00"
+        #   datetime.to_s(:number)                  # => "20071204000000"
+        #   datetime.to_formatted_s(:short)         # => "04 Dec 00:00"
+        #   datetime.to_formatted_s(:long)          # => "December 04, 2007 00:00"
+        #   datetime.to_formatted_s(:long_ordinal)  # => "December 4th, 2007 00:00"
+        #   datetime.to_formatted_s(:rfc822)        # => "Tue, 04 Dec 2007 00:00:00 +0000"
+        #
+        # == Adding your own datetime formats to to_formatted_s
+        # DateTime formats are shared with Time. You can add your own to the
+        # Time::DATE_FORMATS hash. Use the format name as the hash key and
+        # either a strftime string or Proc instance that takes a time or
+        # datetime argument as the value.
+        #
+        #   # config/initializers/time_formats.rb
+        #   Time::DATE_FORMATS[:month_and_year] = "%B %Y"
+        #   Time::DATE_FORMATS[:short_ordinal] = lambda { |time| time.strftime("%B #{time.day.ordinalize}") }
+        def to_formatted_s(format = :default)
+          return to_default_s unless formatter = ::Time::DATE_FORMATS[format]
+          formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
+        end
+
+        # Returns the +utc_offset+ as an +HH:MM formatted string. Examples:
+        #
+        #   datetime = DateTime.civil(2000, 1, 1, 0, 0, 0, Rational(-6, 24))
+        #   datetime.formatted_offset         # => "-06:00"
+        #   datetime.formatted_offset(false)  # => "-0600"
+        def formatted_offset(colon = true, alternate_utc_string = nil)
+          utc? && alternate_utc_string || utc_offset.to_utc_offset_s(colon)
+        end
+        
+        # Overrides the default inspect method with a human readable one, e.g., "Mon, 21 Feb 2005 14:30:00 +0000"
+        def readable_inspect
+          to_s(:rfc822)
+        end
+
+        # Converts self to a Ruby Date object; time portion is discarded
+        def to_date
+          ::Date.new(year, month, day)
+        end
+
+        # Attempts to convert self to a Ruby Time object; returns self if out of range of Ruby Time class
+        # If self has an offset other than 0, self will just be returned unaltered, since there's no clean way to map it to a Time
+        def to_time
+          self.offset == 0 ? ::Time.utc_time(year, month, day, hour, min, sec) : self
+        end
+
+        # To be able to keep Times, Dates and DateTimes interchangeable on conversions
+        def to_datetime
+          self
+        end
+
+        # Converts datetime to an appropriate format for use in XML
+        def xmlschema
+          strftime("%Y-%m-%dT%H:%M:%S%Z")
+        end if RUBY_VERSION < '1.9'
+        
+        # Converts self to a floating-point number of seconds since the Unix epoch 
+        def to_f
+          days_since_unix_epoch = self - ::DateTime.civil(1970)
+          (days_since_unix_epoch * 86_400).to_f
+        end
+      end
+    end
+  end
+end