ldp.rb in rdf-ldp-0.4.0

- old
+ new

@@ -1,37 +1,38 @@
 require 'rack'
 begin
   require 'linkeddata'
-rescue LoadError => e
+rescue LoadError
   require 'rdf/turtle'
   require 'json/ld'
 end
 
 require 'rack/linkeddata'
 require 'rdf/ldp'
 
 module Rack
   ##
-  # Provides Rack middleware for handling Linked Data Platform  requirements
+  # Provides Rack middleware for handling Linked Data Platform requirements
   # when passed {RDF::LDP::Resource} and its subclasses as response objects.
   #
   # Response objects that are not an {RDF::LDP::Resource} are passed over 
   # without alteration, allowing server implementers to mix LDP interaction
   # patterns with others on the same server.
   #
   # The suite can be mix-and-matched as needed. This allows easy swap in of 
   # custom handlers for parts of the behavior. It is recommended that you use
-  # {Rack::LDP::ContentNegotiation}, {Rack::LDP::Errors}, and 
-  # {Rack::LDP::Responses} as the outer three services. With these in place,
-  # you can handle requests as needed in your application, giving responses
-  # conforming to the core {RDF::LDP::Resource} interface.
+  # {Rack::LDP::ContentNegotiation}, {Rack::LDP::Errors}, {Rack::LDP::Responses}
+  # and {Rack::LDP::Reousets} as the outer middleware layers. With these in 
+  # place, you can handle requests as needed in your application, giving 
+  # responses conforming to the core {RDF::LDP::Resource} interface.
   #
   # @example
   #   run Rack:;Builder.new do
   #     use Rack::LDP::ContentNegotiation
   #     use Rack::LDP::Errors
   #     use Rack::LDP::Responses
+  #     use Rack::LDP::Requests
   #     # ...
   #   end
   # 
   # @see http://www.w3.org/TR/ldp/ the LDP specification
   module LDP
@@ -108,13 +109,32 @@
       end
     end
 
     ##
     # Specializes {Rack::LinkedData::ContentNegotiation}, making the default 
-    # return type 'text/turtle'
+    # return type 'text/turtle'.
+    #
+    # @see Rack::LinkedData::ContentNegotiation}, making
     class ContentNegotiation < Rack::LinkedData::ContentNegotiation
+      DEFAULT_PREFIXES = 
+        Hash[*RDF::Vocabulary.map { |v| [v.__prefix__, v.to_uri] }.flatten]
+        .freeze
+
       def initialize(app, options = {})
         options[:default] ||= 'text/turtle'
+        options[:prefixes] ||= DEFAULT_PREFIXES.dup
+        super
+      end
+
+      ##
+      # The default LinkedData Conneg doesn't support wildcard operators. We 
+      # patch in support for 'text/*' manually, giving Turtle. This should be 
+      # considered helpful by LDP clients.
+      # 
+      # @see Rack::LinkedData::ContentNegotiation#find_writer_for_content_type
+      def find_writer_for_content_type(content_type)
+        return [RDF::Writer.for(:ttl), 'text/turtle'] if 
+          content_type == 'text/*'
         super
       end
     end
   end
 end