Added support for named captures

Author: rfestag

lib/webmachine/dispatcher/route.rb

@@ -122,7 +122,14 @@ def bind(tokens, bindings)
           when Regexp === spec.first
             matches = spec.first.match URI.decode(tokens.first)
             if matches
-              bindings[:captures] = (bindings[:captures] || []) + matches.captures
+              if spec.first.named_captures.empty?
+                bindings[:captures] = (bindings[:captures] || []) + matches.captures
+              else
+                spec.first.named_captures.reduce(bindings) do |bindings, (name, idxs)|
+                  bindings[name.to_sym] = matches.captures[idxs.first-1]
+                  bindings
+                end
+              end
             else
               return false
             end

spec/webmachine/dispatcher/route_spec.rb

@@ -219,6 +219,14 @@ def call(request)
           expect(request.path_info).to eq({:captures => ["bar", "json"]})
         end
       end
+      context "with named capture regex" do
+        subject { described_class.new(['foo', :bar, /(?<baz>[^.]+)\.(?<format>.*)/], resource) }
+        let(:uri) { URI.parse("http://localhost:8080/foo/bar/baz.json") }
+
+        it "should assign the captures path variables" do
+          expect(request.path_info).to eq({bar: 'bar', baz: 'baz', format: "json"})
+        end
+      end
 
       context "with a splat" do
         subject { described_class.new(['foo', :*], resource) }