1 files changed, 58 insertions, 0 deletions
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
new file mode 100644
index 0000000000..e379504f54
--- /dev/null
+++ b/railties/lib/rails/application.rb
@@ -0,0 +1,58 @@
+require 'action_controller'
+
+module Rails
+  class Application
+    # Loads a Rails application from a directory and returns a Rails
+    # Application object that responds to #call(env)
+    def self.load(path, options = {})
+      require "#{path}/config/environment"
+      new(path, options)
+    end
+
+    def initialize(path, options)
+      @path = path
+
+      ensure_tmp_dirs
+
+      if options[:config]
+        config = File.join(path, options[:config])
+        config = nil unless File.exist?(config)
+      end
+
+      @app = ::Rack::Builder.new {
+        use Rails::Rack::LogTailer unless options[:detach]
+        use Rails::Rack::Debugger if options[:debugger]
+        if options[:path]
+          base = options[:path]
+          ActionController::Base.relative_url_root = base
+        end
+
+        map base || "/" do
+          use Rails::Rack::Static 
+
+          if config && config =~ /\.ru$/
+            instance_eval(File.read(config), config)
+          elsif config
+            require config
+            run Object.const_get(File.basename(config, '.rb').capitalize)
+          else
+            run ActionController::Dispatcher.new
+          end
+        end
+      }.to_app
+    end
+
+    def call(env)
+      @app.call(env)
+    end
+
+  private
+
+    def ensure_tmp_dirs
+      %w(cache pids sessions sockets).each do |dir_to_make|
+        FileUtils.mkdir_p(File.join(@path, 'tmp', dir_to_make))
+      end
+    end
+
+  end
+end
+\ No newline at end of file