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diff --git a/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb b/vendor/rails/actionpack/lib/action_controller/url_rewriter.rb
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+module ActionController
+  # In <b>routes.rb</b> one defines URL-to-controller mappings, but the reverse
+  # is also possible: an URL can be generated from one of your routing definitions.
+  # URL generation functionality is centralized in this module.
+  #
+  # See ActionController::Routing and ActionController::Resources for general
+  # information about routing and routes.rb.
+  #
+  # <b>Tip:</b> If you need to generate URLs from your models or some other place,
+  # then ActionController::UrlWriter is what you're looking for. Read on for
+  # an introduction.
+  #
+  # == URL generation from parameters
+  #
+  # As you may know, some functions - such as ActionController::Base#url_for
+  # and ActionView::Helpers::UrlHelper#link_to, can generate URLs given a set
+  # of parameters. For example, you've probably had the chance to write code
+  # like this in one of your views:
+  #
+  #   <%= link_to('Click here', :controller => 'users',
+  #           :action => 'new', :message => 'Welcome!') %>
+  #
+  #   #=> Generates a link to: /users/new?message=Welcome%21
+  #
+  # link_to, and all other functions that require URL generation functionality,
+  # actually use ActionController::UrlWriter under the hood. And in particular,
+  # they use the ActionController::UrlWriter#url_for method. One can generate
+  # the same path as the above example by using the following code:
+  #
+  #   include UrlWriter
+  #   url_for(:controller => 'users',
+  #           :action => 'new',
+  #           :message => 'Welcome!',
+  #           :only_path => true)
+  #   # => "/users/new?message=Welcome%21"
+  #
+  # Notice the <tt>:only_path => true</tt> part. This is because UrlWriter has no
+  # information about the website hostname that your Rails app is serving. So if you
+  # want to include the hostname as well, then you must also pass the <tt>:host</tt>
+  # argument:
+  #
+  #   include UrlWriter
+  #   url_for(:controller => 'users',
+  #           :action => 'new',
+  #           :message => 'Welcome!',
+  #           :host => 'www.example.com')        # Changed this.
+  #   # => "http://www.example.com/users/new?message=Welcome%21"
+  #
+  # By default, all controllers and views have access to a special version of url_for,
+  # that already knows what the current hostname is. So if you use url_for in your
+  # controllers or your views, then you don't need to explicitly pass the <tt>:host</tt>
+  # argument.
+  #
+  # For convenience reasons, mailers provide a shortcut for ActionController::UrlWriter#url_for.
+  # So within mailers, you only have to type 'url_for' instead of 'ActionController::UrlWriter#url_for'
+  # in full. However, mailers don't have hostname information, and what's why you'll still
+  # have to specify the <tt>:host</tt> argument when generating URLs in mailers.
+  #
+  #
+  # == URL generation for named routes
+  #
+  # UrlWriter also allows one to access methods that have been auto-generated from
+  # named routes. For example, suppose that you have a 'users' resource in your
+  # <b>routes.rb</b>:
+  #
+  #   map.resources :users
+  #
+  # This generates, among other things, the method <tt>users_path</tt>. By default,
+  # this method is accessible from your controllers, views and mailers. If you need
+  # to access this auto-generated method from other places (such as a model), then
+  # you can do that in two ways.
+  #
+  # The first way is to include ActionController::UrlWriter in your class:
+  #
+  #   class User < ActiveRecord::Base
+  #     include ActionController::UrlWriter         # !!!
+  #
+  #     def name=(value)
+  #       write_attribute('name', value)
+  #       write_attribute('base_uri', users_path)   # !!!
+  #     end
+  #   end
+  #
+  # The second way is to access them through ActionController::UrlWriter.
+  # The autogenerated named routes methods are available as class methods:
+  #
+  #   class User < ActiveRecord::Base
+  #     def name=(value)
+  #       write_attribute('name', value)
+  #       path = ActionController::UrlWriter.users_path   # !!!
+  #       write_attribute('base_uri', path)               # !!!
+  #     end
+  #   end
+  module UrlWriter
+    # The default options for urls written by this writer. Typically a <tt>:host</tt>
+    # pair is provided.
+    mattr_accessor :default_url_options
+    self.default_url_options = {}
+
+    def self.included(base) #:nodoc:
+      ActionController::Routing::Routes.install_helpers(base)
+      base.mattr_accessor :default_url_options
+      base.default_url_options ||= default_url_options
+    end
+
+    # Generate a url based on the options provided, default_url_options and the
+    # routes defined in routes.rb.  The following options are supported:
+    #
+    # * <tt>:only_path</tt> - If true, the relative url is returned. Defaults to +false+.
+    # * <tt>:protocol</tt> - The protocol to connect to. Defaults to 'http'.
+    # * <tt>:host</tt> - Specifies the host the link should be targetted at.
+    #   If <tt>:only_path</tt> is false, this option must be
+    #   provided either explicitly, or via +default_url_options+.
+    # * <tt>:port</tt> - Optionally specify the port to connect to.
+    # * <tt>:anchor</tt> - An anchor name to be appended to the path.
+    # * <tt>:skip_relative_url_root</tt> - If true, the url is not constructed using the
+    #   +relative_url_root+ set in ActionController::Base.relative_url_root.
+    # * <tt>:trailing_slash</tt> - If true, adds a trailing slash, as in "/archive/2009/"
+    #
+    # Any other key (<tt>:controller</tt>, <tt>:action</tt>, etc.) given to
+    # +url_for+ is forwarded to the Routes module.
+    #
+    # Examples:
+    #
+    #    url_for :controller => 'tasks', :action => 'testing', :host=>'somehost.org', :port=>'8080'    # => 'http://somehost.org:8080/tasks/testing'
+    #    url_for :controller => 'tasks', :action => 'testing', :host=>'somehost.org', :anchor => 'ok', :only_path => true    # => '/tasks/testing#ok'
+    #    url_for :controller => 'tasks', :action => 'testing', :trailing_slash=>true  # => 'http://somehost.org/tasks/testing/'
+    #    url_for :controller => 'tasks', :action => 'testing', :host=>'somehost.org', :number => '33'  # => 'http://somehost.org/tasks/testing?number=33'
+    def url_for(options)
+      options = self.class.default_url_options.merge(options)
+
+      url = ''
+
+      unless options.delete(:only_path)
+        url << (options.delete(:protocol) || 'http')
+        url << '://' unless url.match("://")
+
+        raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host]
+
+        url << options.delete(:host)
+        url << ":#{options.delete(:port)}" if options.key?(:port)
+      else
+        # Delete the unused options to prevent their appearance in the query string.
+        [:protocol, :host, :port, :skip_relative_url_root].each { |k| options.delete(k) }
+      end
+      trailing_slash = options.delete(:trailing_slash) if options.key?(:trailing_slash)
+      url << ActionController::Base.relative_url_root.to_s unless options[:skip_relative_url_root]
+      anchor = "##{CGI.escape options.delete(:anchor).to_param.to_s}" if options[:anchor]
+      generated = Routing::Routes.generate(options, {})
+      url << (trailing_slash ? generated.sub(/\?|\z/) { "/" + $& } : generated)
+      url << anchor if anchor
+
+      url
+    end
+  end
+
+  # Rewrites URLs for Base.redirect_to and Base.url_for in the controller.
+  class UrlRewriter #:nodoc:
+    RESERVED_OPTIONS = [:anchor, :params, :only_path, :host, :protocol, :port, :trailing_slash, :skip_relative_url_root]
+    def initialize(request, parameters)
+      @request, @parameters = request, parameters
+    end
+
+    def rewrite(options = {})
+      rewrite_url(options)
+    end
+
+    def to_str
+      "#{@request.protocol}, #{@request.host_with_port}, #{@request.path}, #{@parameters[:controller]}, #{@parameters[:action]}, #{@request.parameters.inspect}"
+    end
+
+    alias_method :to_s, :to_str
+
+    private
+      # Given a path and options, returns a rewritten URL string
+      def rewrite_url(options)
+        rewritten_url = ""
+
+        unless options[:only_path]
+          rewritten_url << (options[:protocol] || @request.protocol)
+          rewritten_url << "://" unless rewritten_url.match("://")
+          rewritten_url << rewrite_authentication(options)
+          rewritten_url << (options[:host] || @request.host_with_port)
+          rewritten_url << ":#{options.delete(:port)}" if options.key?(:port)
+        end
+
+        path = rewrite_path(options)
+        rewritten_url << ActionController::Base.relative_url_root.to_s unless options[:skip_relative_url_root]
+        rewritten_url << (options[:trailing_slash] ? path.sub(/\?|\z/) { "/" + $& } : path)
+        rewritten_url << "##{options[:anchor]}" if options[:anchor]
+
+        rewritten_url
+      end
+
+      # Given a Hash of options, generates a route
+      def rewrite_path(options)
+        options = options.symbolize_keys
+        options.update(options[:params].symbolize_keys) if options[:params]
+
+        if (overwrite = options.delete(:overwrite_params))
+          options.update(@parameters.symbolize_keys)
+          options.update(overwrite.symbolize_keys)
+        end
+
+        RESERVED_OPTIONS.each { |k| options.delete(k) }
+
+        # Generates the query string, too
+        Routing::Routes.generate(options, @request.symbolized_path_parameters)
+      end
+
+      def rewrite_authentication(options)
+        if options[:user] && options[:password]
+          "#{CGI.escape(options.delete(:user))}:#{CGI.escape(options.delete(:password))}@"
+        else
+          ""
+        end
+      end
+  end
+end