Fix routes don't match with certain forms of URL encoding [#147]

We no longer store routes in URL encoded form and unescape the
PATH_INFO before attempting to match routes. This allows matching
all variations of encoded characters but does not allow matching
encoded "/" characters in the PATH_INFO.

See also:

http://sinatra.lighthouseapp.com/projects/9779/tickets/147
http://groups.google.com/group/sinatrarb/browse_thread/thread/baab6ea877d7c2e4

lib/sinatra/base.rb

@@ -372,11 +372,11 @@ module Sinatra
       # routes
       if routes = self.class.routes[@request.request_method]
         original_params = @params
-        path            = @request.path_info
+        path            = unescape(@request.path_info)
 
         routes.each do |pattern, keys, conditions, block|
           if match = pattern.match(path)
-            values = match.captures.map{|val| val && unescape(val) }
+            values = match.captures.to_a
             params =
               if keys.any?
                 keys.zip(values).inject({}) do |hash,(k,v)|
@@ -673,7 +673,7 @@ module Sinatra
         if path.respond_to? :to_str
           special_chars = %w{. + ( )}
           pattern =
-            URI.encode(path).gsub(/((:\w+)|[\*#{special_chars.join}])/) do |match|
+            path.gsub(/((:\w+)|[\*#{special_chars.join}])/) do |match|
               case match
               when "*"
                 keys << 'splat'

test/routing_test.rb

@@ -158,7 +158,7 @@ describe "Routing" do
   it "literally matches + in paths" do
     route_def '/te+st/'
 
-    get '/te+st/'
+    get '/te%2Bst/'
     assert ok?
     get '/teeeeeeest/'
     assert not_found?
@@ -243,7 +243,7 @@ describe "Routing" do
     assert_equal 'looks good', body
   end
 
-  it "supports paths that include spaces" do
+  it "matches paths that include spaces encoded with %20" do
     mock_app {
       get '/path with spaces' do
         'looks good'
@@ -255,6 +255,18 @@ describe "Routing" do
     assert_equal 'looks good', body
   end
 
+  it "matches paths that include spaces encoded with +" do
+    mock_app {
+      get '/path with spaces' do
+        'looks good'
+      end
+    }
+
+    get '/path+with+spaces'
+    assert ok?
+    assert_equal 'looks good', body
+  end
+
   it "URL decodes named parameters and splats" do
     mock_app {
       get '/:foo/*' do