Merge commit 'mainstream/master'

Conflicts:
	actionpack/lib/action_controller/base/mime_responds.rb

29 files changed, 277 insertions, 180 deletions

diff --git a/activesupport/lib/active_support.rb b/activesupport/lib/active_support.rb
index dab017770d..a20635ba62 100644
--- a/activesupport/lib/active_support.rb
+++ b/activesupport/lib/active_support.rb
@@ -22,35 +22,19 @@
 #++
 
 module ActiveSupport
-  def self.load_all!
-    [Dependencies, Deprecation, Gzip, MessageVerifier, Multibyte, SecureRandom] + Core.load_all!
+  class << self
+    attr_accessor :load_all_hooks
+    def on_load_all(&hook) load_all_hooks << hook end
+    def load_all!; load_all_hooks.each { |hook| hook.call } end
   end
+  self.load_all_hooks = []
 
-  autoload :BacktraceCleaner, 'active_support/backtrace_cleaner'
-  autoload :Base64, 'active_support/base64'
-  autoload :BasicObject, 'active_support/basic_object'
-  autoload :BufferedLogger, 'active_support/buffered_logger'
-  autoload :Cache, 'active_support/cache'
-  autoload :Callbacks, 'active_support/callbacks'
-  autoload :NewCallbacks, 'active_support/new_callbacks'
-  autoload :ConcurrentHash, 'active_support/concurrent_hash'
-  autoload :DependencyModule, 'active_support/dependency_module'
-  autoload :Deprecation, 'active_support/deprecation'
-  autoload :Gzip, 'active_support/gzip'
-  autoload :Inflector, 'active_support/inflector'
-  autoload :Memoizable, 'active_support/memoizable'
-  autoload :MessageEncryptor, 'active_support/message_encryptor'
-  autoload :MessageVerifier, 'active_support/message_verifier'
-  autoload :Multibyte, 'active_support/multibyte'
-  autoload :OptionMerger, 'active_support/option_merger'
-  autoload :OrderedHash, 'active_support/ordered_hash'
-  autoload :OrderedOptions, 'active_support/ordered_options'
-  autoload :Rescuable, 'active_support/rescuable'
-  autoload :SecureRandom, 'active_support/secure_random'
-  autoload :StringInquirer, 'active_support/string_inquirer'
-  autoload :XmlMini, 'active_support/xml_mini'
+  on_load_all do
+    [Dependencies, Deprecation, Gzip, MessageVerifier, Multibyte, SecureRandom]
+  end
 end
 
+require 'active_support/autoload'
 require 'active_support/vendor'
 
 I18n.load_path << "#{File.dirname(__FILE__)}/active_support/locale/en.yml"
diff --git a/activesupport/lib/active_support/all.rb b/activesupport/lib/active_support/all.rb
new file mode 100644
index 0000000000..f537818300
--- /dev/null
+++ b/activesupport/lib/active_support/all.rb
@@ -0,0 +1,3 @@
+require 'active_support'
+require 'active_support/time'
+require 'active_support/core_ext'
diff --git a/activesupport/lib/active_support/autoload.rb b/activesupport/lib/active_support/autoload.rb
new file mode 100644
index 0000000000..ed229d1c5f
--- /dev/null
+++ b/activesupport/lib/active_support/autoload.rb
@@ -0,0 +1,25 @@
+module ActiveSupport
+  autoload :BacktraceCleaner, 'active_support/backtrace_cleaner'
+  autoload :Base64, 'active_support/base64'
+  autoload :BasicObject, 'active_support/basic_object'
+  autoload :BufferedLogger, 'active_support/buffered_logger'
+  autoload :Cache, 'active_support/cache'
+  autoload :Callbacks, 'active_support/callbacks'
+  autoload :NewCallbacks, 'active_support/new_callbacks'
+  autoload :ConcurrentHash, 'active_support/concurrent_hash'
+  autoload :DependencyModule, 'active_support/dependency_module'
+  autoload :Deprecation, 'active_support/deprecation'
+  autoload :Gzip, 'active_support/gzip'
+  autoload :Inflector, 'active_support/inflector'
+  autoload :Memoizable, 'active_support/memoizable'
+  autoload :MessageEncryptor, 'active_support/message_encryptor'
+  autoload :MessageVerifier, 'active_support/message_verifier'
+  autoload :Multibyte, 'active_support/multibyte'
+  autoload :OptionMerger, 'active_support/option_merger'
+  autoload :OrderedHash, 'active_support/ordered_hash'
+  autoload :OrderedOptions, 'active_support/ordered_options'
+  autoload :Rescuable, 'active_support/rescuable'
+  autoload :SecureRandom, 'active_support/secure_random'
+  autoload :StringInquirer, 'active_support/string_inquirer'
+  autoload :XmlMini, 'active_support/xml_mini'
+end
diff --git a/activesupport/lib/active_support/cache/mem_cache_store.rb b/activesupport/lib/active_support/cache/mem_cache_store.rb
index ab8ab4eb68..8e9ae71d84 100644
--- a/activesupport/lib/active_support/cache/mem_cache_store.rb
+++ b/activesupport/lib/active_support/cache/mem_cache_store.rb
@@ -23,7 +23,12 @@ module ActiveSupport
         DELETED     = "DELETED\r\n"
       end
 
-      attr_reader :addresses
+      def self.build_mem_cache(*addresses)
+        addresses = addresses.flatten
+        options = addresses.extract_options!
+        addresses = ["localhost"] if addresses.empty?
+        MemCache.new(addresses, options)
+      end
 
       # Creates a new MemCacheStore object, with the given memcached server
       # addresses. Each address is either a host name, or a host-with-port string
@@ -34,15 +39,20 @@ module ActiveSupport
       # If no addresses are specified, then MemCacheStore will connect to
       # localhost port 11211 (the default memcached port).
       def initialize(*addresses)
-        addresses = addresses.flatten
-        options = addresses.extract_options!
-        addresses = ["localhost"] if addresses.empty?
-        @addresses = addresses
-        @data = MemCache.new(addresses, options)
+        if addresses.first.respond_to?(:get)
+          @data = addresses.first
+        else
+          @data = self.class.build_mem_cache(*addresses)
+        end
 
         extend Strategy::LocalCache
       end
 
+      # Reads multiple keys from the cache.
+      def read_multi(*keys)
+        @data.get_multi keys
+      end
+
       def read(key, options = nil) # :nodoc:
         super
         @data.get(key, raw?(options))
diff --git a/activesupport/lib/active_support/core.rb b/activesupport/lib/active_support/core.rb
deleted file mode 100644
index ad8db94941..0000000000
--- a/activesupport/lib/active_support/core.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-module ActiveSupport
-  module Core
-    def self.load_all!
-      [TimeWithZone]
-    end
-  end
-end
diff --git a/activesupport/lib/active_support/core/all.rb b/activesupport/lib/active_support/core/all.rb
deleted file mode 100644
index 55e8b4cfac..0000000000
--- a/activesupport/lib/active_support/core/all.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-require 'active_support/core_ext'
-require 'active_support/core'
-Dir["#{File.dirname(__FILE__)}/*.rb"].sort.each do |path|
-  require "active_support/core/#{File.basename(path, '.rb')}"
-end
diff --git a/activesupport/lib/active_support/core/time.rb b/activesupport/lib/active_support/core/time.rb
deleted file mode 100644
index 43e13b5e58..0000000000
--- a/activesupport/lib/active_support/core/time.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-require 'active_support/core/time/autoload'
-require 'active_support/core_ext/time'
-require 'active_support/core_ext/date'
-require 'active_support/core_ext/date_time'
diff --git a/activesupport/lib/active_support/core_ext/hash/conversions.rb b/activesupport/lib/active_support/core_ext/hash/conversions.rb
index fe1f79050c..2a34874d08 100644
--- a/activesupport/lib/active_support/core_ext/hash/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/hash/conversions.rb
@@ -1,8 +1,7 @@
-require 'date'
+require 'active_support/time'
 require 'active_support/core_ext/object/conversions'
 require 'active_support/core_ext/array/conversions'
 require 'active_support/core_ext/hash/reverse_merge'
-require 'active_support/core/time'
 
 class Hash
   # This module exists to decorate files deserialized using Hash.from_xml with
diff --git a/activesupport/lib/active_support/core_ext/object/misc.rb b/activesupport/lib/active_support/core_ext/object/misc.rb
index fb1bcdb98f..80011dfbed 100644
--- a/activesupport/lib/active_support/core_ext/object/misc.rb
+++ b/activesupport/lib/active_support/core_ext/object/misc.rb
@@ -1,80 +1,3 @@
-class Object
-  # Returns +value+ after yielding +value+ to the block. This simplifies the
-  # process of constructing an object, performing work on the object, and then
-  # returning the object from a method. It is a Ruby-ized realization of the K
-  # combinator, courtesy of Mikael Brockman.
-  #
-  # ==== Examples
-  #
-  #  # Without returning
-  #  def foo
-  #    values = []
-  #    values << "bar"
-  #    values << "baz"
-  #    return values
-  #  end
-  #
-  #  foo # => ['bar', 'baz']
-  #
-  #  # returning with a local variable
-  #  def foo
-  #    returning values = [] do
-  #      values << 'bar'
-  #      values << 'baz'
-  #    end
-  #  end
-  #
-  #  foo # => ['bar', 'baz']
-  #  
-  #  # returning with a block argument
-  #  def foo
-  #    returning [] do |values|
-  #      values << 'bar'
-  #      values << 'baz'
-  #    end
-  #  end
-  #  
-  #  foo # => ['bar', 'baz']
-  def returning(value)
-    yield(value)
-    value
-  end
-
-  # Yields <code>x</code> to the block, and then returns <code>x</code>.
-  # The primary purpose of this method is to "tap into" a method chain,
-  # in order to perform operations on intermediate results within the chain.
-  #
-  #   (1..10).tap { |x| puts "original: #{x.inspect}" }.to_a.
-  #     tap    { |x| puts "array: #{x.inspect}" }.
-  #     select { |x| x%2 == 0 }.
-  #     tap    { |x| puts "evens: #{x.inspect}" }.
-  #     map    { |x| x*x }.
-  #     tap    { |x| puts "squares: #{x.inspect}" }
-  def tap
-    yield self
-    self
-  end unless Object.respond_to?(:tap)
-
-  # An elegant way to factor duplication out of options passed to a series of
-  # method calls. Each method called in the block, with the block variable as
-  # the receiver, will have its options merged with the default +options+ hash
-  # provided. Each method called on the block variable must take an options
-  # hash as its final argument.
-  # 
-  #   with_options :order => 'created_at', :class_name => 'Comment' do |post|
-  #     post.has_many :comments, :conditions => ['approved = ?', true], :dependent => :delete_all
-  #     post.has_many :unapproved_comments, :conditions => ['approved = ?', false]
-  #     post.has_many :all_comments
-  #   end
-  #
-  # Can also be used with an explicit receiver:
-  #
-  #   map.with_options :controller => "people" do |people|
-  #     people.connect "/people",     :action => "index"
-  #     people.connect "/people/:id", :action => "show"
-  #   end
-  #
-  def with_options(options)
-    yield ActiveSupport::OptionMerger.new(self, options)
-  end
-end
+require 'active_support/core_ext/object/returning'
+require 'active_support/core_ext/object/tap'
+require 'active_support/core_ext/object/with_options'
diff --git a/activesupport/lib/active_support/core_ext/object/returning.rb b/activesupport/lib/active_support/core_ext/object/returning.rb
new file mode 100644
index 0000000000..0dc2e1266a
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/object/returning.rb
@@ -0,0 +1,42 @@
+class Object
+  # Returns +value+ after yielding +value+ to the block. This simplifies the
+  # process of constructing an object, performing work on the object, and then
+  # returning the object from a method. It is a Ruby-ized realization of the K
+  # combinator, courtesy of Mikael Brockman.
+  #
+  # ==== Examples
+  #
+  #  # Without returning
+  #  def foo
+  #    values = []
+  #    values << "bar"
+  #    values << "baz"
+  #    return values
+  #  end
+  #
+  #  foo # => ['bar', 'baz']
+  #
+  #  # returning with a local variable
+  #  def foo
+  #    returning values = [] do
+  #      values << 'bar'
+  #      values << 'baz'
+  #    end
+  #  end
+  #
+  #  foo # => ['bar', 'baz']
+  #
+  #  # returning with a block argument
+  #  def foo
+  #    returning [] do |values|
+  #      values << 'bar'
+  #      values << 'baz'
+  #    end
+  #  end
+  #
+  #  foo # => ['bar', 'baz']
+  def returning(value)
+    yield(value)
+    value
+  end
+end
diff --git a/activesupport/lib/active_support/core_ext/object/tap.rb b/activesupport/lib/active_support/core_ext/object/tap.rb
new file mode 100644
index 0000000000..db7e715e2d
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/object/tap.rb
@@ -0,0 +1,16 @@
+class Object
+  # Yields <code>x</code> to the block, and then returns <code>x</code>.
+  # The primary purpose of this method is to "tap into" a method chain,
+  # in order to perform operations on intermediate results within the chain.
+  #
+  #   (1..10).tap { |x| puts "original: #{x.inspect}" }.to_a.
+  #     tap    { |x| puts "array: #{x.inspect}" }.
+  #     select { |x| x%2 == 0 }.
+  #     tap    { |x| puts "evens: #{x.inspect}" }.
+  #     map    { |x| x*x }.
+  #     tap    { |x| puts "squares: #{x.inspect}" }
+  def tap
+    yield self
+    self
+  end unless Object.respond_to?(:tap)
+end
diff --git a/activesupport/lib/active_support/core_ext/object/with_options.rb b/activesupport/lib/active_support/core_ext/object/with_options.rb
new file mode 100644
index 0000000000..dd38b7d261
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/object/with_options.rb
@@ -0,0 +1,24 @@
+class Object
+  # An elegant way to factor duplication out of options passed to a series of
+  # method calls. Each method called in the block, with the block variable as
+  # the receiver, will have its options merged with the default +options+ hash
+  # provided. Each method called on the block variable must take an options
+  # hash as its final argument.
+  #
+  #   with_options :order => 'created_at', :class_name => 'Comment' do |post|
+  #     post.has_many :comments, :conditions => ['approved = ?', true], :dependent => :delete_all
+  #     post.has_many :unapproved_comments, :conditions => ['approved = ?', false]
+  #     post.has_many :all_comments
+  #   end
+  #
+  # Can also be used with an explicit receiver:
+  #
+  #   map.with_options :controller => "people" do |people|
+  #     people.connect "/people",     :action => "index"
+  #     people.connect "/people/:id", :action => "show"
+  #   end
+  #
+  def with_options(options)
+    yield ActiveSupport::OptionMerger.new(self, options)
+  end
+end
diff --git a/activesupport/lib/active_support/core_ext/symbol.rb b/activesupport/lib/active_support/core_ext/symbol.rb
index 520369452b..c103cd9dcf 100644
--- a/activesupport/lib/active_support/core_ext/symbol.rb
+++ b/activesupport/lib/active_support/core_ext/symbol.rb
@@ -1,14 +1 @@
-class Symbol
-  # Turns the symbol into a simple proc, which is especially useful for enumerations. Examples:
-  #
-  #   # The same as people.collect { |p| p.name }
-  #   people.collect(&:name)
-  #
-  #   # The same as people.select { |p| p.manager? }.collect { |p| p.salary }
-  #   people.select(&:manager?).collect(&:salary)
-  #
-  # This is a builtin method in Ruby 1.8.7 and later.
-  def to_proc
-    Proc.new { |*args| args.shift.__send__(self, *args) }
-  end unless :to_proc.respond_to?(:to_proc)
-end
+require 'active_support/core_ext/symbol/to_proc'
diff --git a/activesupport/lib/active_support/core_ext/symbol/to_proc.rb b/activesupport/lib/active_support/core_ext/symbol/to_proc.rb
new file mode 100644
index 0000000000..520369452b
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/symbol/to_proc.rb
@@ -0,0 +1,14 @@
+class Symbol
+  # Turns the symbol into a simple proc, which is especially useful for enumerations. Examples:
+  #
+  #   # The same as people.collect { |p| p.name }
+  #   people.collect(&:name)
+  #
+  #   # The same as people.select { |p| p.manager? }.collect { |p| p.salary }
+  #   people.select(&:manager?).collect(&:salary)
+  #
+  # This is a builtin method in Ruby 1.8.7 and later.
+  def to_proc
+    Proc.new { |*args| args.shift.__send__(self, *args) }
+  end unless :to_proc.respond_to?(:to_proc)
+end
diff --git a/activesupport/lib/active_support/dependency_module.rb b/activesupport/lib/active_support/dependency_module.rb
index 8c202acc8f..9872b9654b 100644
--- a/activesupport/lib/active_support/dependency_module.rb
+++ b/activesupport/lib/active_support/dependency_module.rb
@@ -16,10 +16,12 @@ module ActiveSupport
       end
     end
 
-    def depends_on(mod)
-      return if self < mod
-      @_dependencies ||= []
-      @_dependencies << mod
+    def depends_on(*mods)
+      mods.each do |mod|
+        next if self < mod
+        @_dependencies ||= []
+        @_dependencies << mod
+      end
     end
   end
 end
diff --git a/activesupport/lib/active_support/json.rb b/activesupport/lib/active_support/json.rb
index 5072992cdf..6d845182fb 100644
--- a/activesupport/lib/active_support/json.rb
+++ b/activesupport/lib/active_support/json.rb
@@ -40,9 +40,15 @@ module ActiveSupport
     end
 
     class << self
-      attr_reader :backend
       delegate :decode, :to => :backend
-    
+
+      def backend
+        unless defined? @backend
+          self.backend = defined?(::JSON) ? "JSONGem" : "Yaml"
+        end
+        @backend
+      end
+
       def backend=(name)
         if name.is_a?(Module)
           @backend = name
@@ -77,6 +83,5 @@ module ActiveSupport
 end
 
 ActiveSupport.escape_html_entities_in_json = true
-ActiveSupport::JSON.backend = 'Yaml'
 
 require 'active_support/json/encoding'
diff --git a/activesupport/lib/active_support/json/backends/jsongem.rb b/activesupport/lib/active_support/json/backends/jsongem.rb
index de847e30a3..649e6301d1 100644
--- a/activesupport/lib/active_support/json/backends/jsongem.rb
+++ b/activesupport/lib/active_support/json/backends/jsongem.rb
@@ -1,13 +1,18 @@
+require 'json' unless defined?(JSON)
+
 module ActiveSupport
   module JSON
-    ParseError = ::JSON::ParserError
+    ParseError = ::JSON::ParserError unless const_defined?(:ParseError)
 
     module Backends
       module JSONGem
         extend self
 
-        # Converts a JSON string into a Ruby object.
+        # Parses a JSON string or IO and convert it into an object
         def decode(json)
+          if json.respond_to?(:read)
+            json = json.read
+          end
           data = ::JSON.parse(json)
           if ActiveSupport.parse_json_times
             convert_dates_from(data)
diff --git a/activesupport/lib/active_support/json/backends/yaml.rb b/activesupport/lib/active_support/json/backends/yaml.rb
index c7db508c23..667016f45d 100644
--- a/activesupport/lib/active_support/json/backends/yaml.rb
+++ b/activesupport/lib/active_support/json/backends/yaml.rb
@@ -2,15 +2,20 @@ require 'active_support/core_ext/string/starts_ends_with'
 
 module ActiveSupport
   module JSON
-    class ParseError < StandardError
+    unless const_defined?(:ParseError)
+      class ParseError < StandardError
+      end
     end
 
     module Backends
       module Yaml
         extend self
 
-        # Converts a JSON string into a Ruby object.
+        # Parses a JSON string or IO and converts it into an object
         def decode(json)
+          if json.respond_to?(:read)
+            json = json.read
+          end
           YAML.load(convert_json_to_yaml(json))
         rescue ArgumentError => e
           raise ParseError, "Invalid JSON string"
diff --git a/activesupport/lib/active_support/multibyte/chars.rb b/activesupport/lib/active_support/multibyte/chars.rb
index 60f082bcc1..96ed35f0e0 100644
--- a/activesupport/lib/active_support/multibyte/chars.rb
+++ b/activesupport/lib/active_support/multibyte/chars.rb
@@ -1,4 +1,5 @@
 # encoding: utf-8
+require 'active_support/core_ext/string/behavior'
 
 module ActiveSupport #:nodoc:
   module Multibyte #:nodoc:
diff --git a/activesupport/lib/active_support/new_callbacks.rb b/activesupport/lib/active_support/new_callbacks.rb
index 9316d6d2b6..f8108780f1 100644
--- a/activesupport/lib/active_support/new_callbacks.rb
+++ b/activesupport/lib/active_support/new_callbacks.rb
@@ -296,9 +296,13 @@ module ActiveSupport
           method_name
         else
           kind, name = @kind, @name
-          @klass.send(:define_method, method_name) do
-            filter.send("#{kind}_#{name}", self)
-          end
+          @klass.send(:define_method, "#{method_name}_object") { filter }
+
+          @klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+            def #{method_name}(&blk)
+              #{method_name}_object.send("#{kind}_#{name}", self, &blk)
+            end
+          RUBY_EVAL
           method_name
         end
       end
diff --git a/activesupport/lib/active_support/ruby/shim.rb b/activesupport/lib/active_support/ruby/shim.rb
new file mode 100644
index 0000000000..37c57c485a
--- /dev/null
+++ b/activesupport/lib/active_support/ruby/shim.rb
@@ -0,0 +1,24 @@
+# Backported Ruby builtins so you can code with the latest & greatest
+# but still run on any Ruby 1.8.x.
+#
+# Date        next_year, next_month
+# DateTime    to_date, to_datetime, xmlschema
+# Enumerable  group_by, each_with_object, none?
+# Integer     even?, odd?
+# Object      tap
+# Process     Process.daemon
+# REXML       security fix
+# String      ord
+# Symbol      to_proc
+# Time        to_date, to_time, to_datetime
+require 'active_support'
+require 'active_support/core_ext/date/calculations'
+require 'active_support/core_ext/date_time/conversions'
+require 'active_support/core_ext/enumerable'
+require 'active_support/core_ext/integer/even_odd'
+require 'active_support/core_ext/object/tap'
+require 'active_support/core_ext/process/daemon'
+require 'active_support/core_ext/string/conversions'
+require 'active_support/core_ext/rexml'
+require 'active_support/core_ext/symbol/to_proc'
+require 'active_support/core_ext/time/conversions'
diff --git a/activesupport/lib/active_support/test_case.rb b/activesupport/lib/active_support/test_case.rb
index 50e25ef740..bab2a401eb 100644
--- a/activesupport/lib/active_support/test_case.rb
+++ b/activesupport/lib/active_support/test_case.rb
@@ -32,6 +32,11 @@ module ActiveSupport
       include ActiveSupport::Testing::Default
     end
 
+    $tags = {}
+    def self.for_tag(tag)
+      yield if $tags[tag]
+    end
+
     include ActiveSupport::Testing::SetupAndTeardown
     include ActiveSupport::Testing::Assertions
     include ActiveSupport::Testing::Deprecation
diff --git a/activesupport/lib/active_support/testing/pending.rb b/activesupport/lib/active_support/testing/pending.rb
index d945c7e476..21134ff9e2 100644
--- a/activesupport/lib/active_support/testing/pending.rb
+++ b/activesupport/lib/active_support/testing/pending.rb
@@ -11,6 +11,11 @@ module ActiveSupport
         @@at_exit = false
 
         def pending(description = "", &block)
+          if description.is_a?(Symbol)
+            is_pending = $tags[description]
+            return block.call unless is_pending
+          end
+
           if block_given?
             failed = false
 
diff --git a/activesupport/lib/active_support/time.rb b/activesupport/lib/active_support/time.rb
new file mode 100644
index 0000000000..d36a683601
--- /dev/null
+++ b/activesupport/lib/active_support/time.rb
@@ -0,0 +1,14 @@
+require 'active_support'
+require 'active_support/core_ext/time'
+require 'active_support/core_ext/date'
+require 'active_support/core_ext/date_time'
+
+module ActiveSupport
+  autoload :Duration, 'active_support/duration'
+  autoload :TimeWithZone, 'active_support/time_with_zone'
+  autoload :TimeZone, 'active_support/values/time_zone'
+
+  on_load_all do
+    [Duration, TimeWithZone, TimeZone]
+  end
+end
diff --git a/activesupport/lib/active_support/core/time/autoload.rb b/activesupport/lib/active_support/time/autoload.rb
index c9a7731b39..c9a7731b39 100644
--- a/activesupport/lib/active_support/core/time/autoload.rb
+++ b/activesupport/lib/active_support/time/autoload.rb
diff --git a/activesupport/lib/active_support/xml_mini/jdom.rb b/activesupport/lib/active_support/xml_mini/jdom.rb
index 208e2a8fb6..5c3d93c4a1 100644
--- a/activesupport/lib/active_support/xml_mini/jdom.rb
+++ b/activesupport/lib/active_support/xml_mini/jdom.rb
@@ -24,15 +24,19 @@ module ActiveSupport
     node_type_map = {}
     NODE_TYPE_NAMES.each { |type| node_type_map[Node.send(type)] = type }
 
-    # Parse an XML Document string into a simple hash using Java's jdom.
-    # string::
-    #   XML Document string to parse
-    def parse(string)
-      if string.blank?
+    # Parse an XML Document string or IO into a simple hash using Java's jdom.
+    # data::
+    #   XML Document string or IO to parse
+    def parse(data)
+      if data.respond_to?(:read)
+        data = data.read
+      end
+
+      if data.blank?
         {}
       else
         @dbf = DocumentBuilderFactory.new_instance
-        xml_string_reader = StringReader.new(string)
+        xml_string_reader = StringReader.new(data)
         xml_input_source = InputSource.new(xml_string_reader)
         doc = @dbf.new_document_builder.parse(xml_input_source)
         merge_element!({}, doc.document_element)
diff --git a/activesupport/lib/active_support/xml_mini/libxml.rb b/activesupport/lib/active_support/xml_mini/libxml.rb
index 370205409a..d4c4dc7be5 100644
--- a/activesupport/lib/active_support/xml_mini/libxml.rb
+++ b/activesupport/lib/active_support/xml_mini/libxml.rb
@@ -5,16 +5,20 @@ module ActiveSupport
   module XmlMini_LibXML #:nodoc:
     extend self
 
-    # Parse an XML Document string into a simple hash using libxml.
-    # string::
-    #   XML Document string to parse
-    def parse(string)
+    # Parse an XML Document string or IO into a simple hash using libxml.
+    # data::
+    #   XML Document string or IO to parse
+    def parse(data)
+      if data.respond_to?(:read)
+        data = data.read
+      end
+
       LibXML::XML.default_keep_blanks = false
 
-      if string.blank?
+      if data.blank?
         {}
       else
-        LibXML::XML::Parser.string(string.strip).parse.to_hash
+        LibXML::XML::Parser.string(data.strip).parse.to_hash
       end
     end
 
diff --git a/activesupport/lib/active_support/xml_mini/nokogiri.rb b/activesupport/lib/active_support/xml_mini/nokogiri.rb
index c71c6badab..6c64612aee 100644
--- a/activesupport/lib/active_support/xml_mini/nokogiri.rb
+++ b/activesupport/lib/active_support/xml_mini/nokogiri.rb
@@ -5,14 +5,18 @@ module ActiveSupport
   module XmlMini_Nokogiri #:nodoc:
     extend self
 
-    # Parse an XML Document string into a simple hash using libxml / nokogiri.
-    # string::
-    #   XML Document string to parse
-    def parse(string)
-      if string.blank?
+    # Parse an XML Document string or IO into a simple hash using libxml / nokogiri.
+    # data::
+    #   XML Document string or IO to parse
+    def parse(data)
+      if data.respond_to?(:read)
+        data = data.read
+      end
+
+      if data.blank?
         {}
       else
-        doc = Nokogiri::XML(string)
+        doc = Nokogiri::XML(data)
         raise doc.errors.first if doc.errors.length > 0
         doc.to_hash
       end
diff --git a/activesupport/lib/active_support/xml_mini/rexml.rb b/activesupport/lib/active_support/xml_mini/rexml.rb
index 9b3243c0e4..08f797749f 100644
--- a/activesupport/lib/active_support/xml_mini/rexml.rb
+++ b/activesupport/lib/active_support/xml_mini/rexml.rb
@@ -7,16 +7,20 @@ module ActiveSupport
 
     CONTENT_KEY = '__content__'.freeze
 
-    # Parse an XML Document string into a simple hash
+    # Parse an XML Document string or IO into a simple hash
     #
     # Same as XmlSimple::xml_in but doesn't shoot itself in the foot,
     # and uses the defaults from ActiveSupport
     #
-    # string::
-    #   XML Document string to parse
-    def parse(string)
+    # data::
+    #   XML Document string or IO to parse
+    def parse(data)
+      if data.respond_to?(:read)
+        data = data.read
+      end
+
       require 'rexml/document' unless defined?(REXML::Document)
-      doc = REXML::Document.new(string)
+      doc = REXML::Document.new(data)
       merge_element!({}, doc.root)
     end