Adding path prefix support for dispatchers.

lib/twitter_auth.rb

@@ -10,6 +10,10 @@ def self.base_url
     config['base_url'] || 'https://twitter.com'    
   end
 
+  def self.path_prefix
+    URI.parse(base_url).path
+  end
+
   def self.api_timeout
     config['api_timeout'] || 10
   end

lib/twitter_auth/dispatcher/basic.rb

@@ -13,6 +13,7 @@ def initialize(user)
       end
 
       def request(http_method, path, body=nil, *arguments)
+        path = TwitterAuth.path_prefix + path
         path = append_extension_to(path)
 
         response = TwitterAuth.net.start{ |http|

lib/twitter_auth/dispatcher/oauth.rb

@@ -14,6 +14,7 @@ def initialize(user)
       end
 
       def request(http_method, path, *arguments)
+        path = TwitterAuth.path_prefix + path
         path = append_extension_to(path)
 
         response = super

spec/twitter_auth_spec.rb

@@ -1,7 +1,7 @@
 require File.dirname(__FILE__) + '/spec_helper'
 
 describe TwitterAuth do
-  describe '#base_url' do
+  describe '.base_url' do
     it 'should have default to https://twitter.com' do
       TwitterAuth.stub!(:config).and_return({})
       TwitterAuth.base_url.should == 'https://twitter.com'
@@ -13,6 +13,18 @@
     end
   end
 
+  describe ".path_prefix" do
+    it 'should be blank if the base url does not have a path' do
+      TwitterAuth.stub!(:base_url).and_return("https://twitter.com:443")
+      TwitterAuth.path_prefix.should == ""
+    end
+
+    it 'should return the path prefix if one exists' do
+      TwitterAuth.stub!(:base_url).and_return("https://api.presentlyapp.com/api/twitter")
+      TwitterAuth.path_prefix.should == "/api/twitter"
+    end
+  end
+
   describe '.api_timeout' do
     it 'should default to 10' do
       TwitterAuth.stub!(:config).and_return({})