[zeus] Added configuration file for zeus.

Zeus preloads the environment to allow tasks to execute
without loading the environment each time.

See https://github.com/burke/zeus#readme for more details.

.zeus.rb

@@ -0,0 +1,133 @@
+require 'socket'
+begin
+  require 'testrbl' # before bundler is setup so it does not need to be in the Gemfile
+rescue LoadError
+end
+
+ROOT_PATH = File.expand_path(Dir.pwd)
+
+Zeus::Server.define! do
+  stage :boot do
+
+    action do
+      ENV_PATH  = File.expand_path('config/environment',  ROOT_PATH)
+      BOOT_PATH = File.expand_path('config/boot',  ROOT_PATH)
+      APP_PATH  = File.expand_path('config/application',  ROOT_PATH)
+
+      require BOOT_PATH
+      require 'rails/all'
+    end
+
+    stage :default_bundle do
+      action { Bundler.require(:default) }
+
+      stage :development_environment do
+        action do
+          Bundler.require(:development)
+          Rails.env = ENV['RAILS_ENV'] = "development"
+          require APP_PATH
+          Rails.application.require_environment!
+        end
+
+        command :generate, :g do
+          begin
+            require 'rails/generators'
+            Rails.application.load_generators
+          rescue LoadError # Rails 3.0 doesn't require this block to be run, but 3.2+ does
+          end
+          require 'rails/commands/generate'
+        end
+
+        command :runner, :r do
+          require 'rails/commands/runner'
+        end
+
+        command :console, :c do
+          require 'rails/commands/console'
+          Rails::Console.start(Rails.application)
+        end
+
+        command :server, :s do
+          require 'rails/commands/server'
+          server = Rails::Server.new
+          Dir.chdir(Rails.application.root)
+          server.start
+        end
+
+        stage :prerake do
+          action do
+            require 'rake'
+            load 'Rakefile'
+          end
+
+          command :rake do
+            Rake.application.run
+          end
+
+        end
+      end
+
+      stage :test_environment do
+        action do
+          Bundler.require(:test)
+
+          Rails.env = ENV['RAILS_ENV'] = 'test'
+          require APP_PATH
+
+          $rails_rake_task = 'yup' # lie to skip eager loading
+          Rails.application.require_environment!
+          $rails_rake_task = nil
+          $LOAD_PATH.unshift(ROOT_PATH) unless $LOAD_PATH.include?(ROOT_PATH)
+
+          if Dir.exist?(ROOT_PATH + "/test")
+            test = File.join(ROOT_PATH, 'test')
+            $LOAD_PATH.unshift(test) unless $LOAD_PATH.include?(test)
+          end
+
+          if Dir.exist?(ROOT_PATH + "/spec")
+            spec = File.join(ROOT_PATH, 'spec')
+            $LOAD_PATH.unshift(spec) unless $LOAD_PATH.include?(spec)
+          end
+
+        end
+
+        if Dir.exist?(ROOT_PATH + "/test")
+          stage :test_helper do
+            action { require 'test_helper' }
+
+            command :testrb do
+              argv = ARGV
+
+              # try to find patter by line using testrbl
+              if defined?(Testrbl) && argv.size == 1 and argv.first =~ /^\S+:\d+$/
+                file, line = argv.first.split(':')
+                argv = [file, '-n', "/#{Testrbl.send(:pattern_from_file, File.readlines(file), line)}/"]
+                puts "using -n '#{argv[2]}'" # let users copy/paste or adjust the pattern
+              end
+
+              runner = Test::Unit::AutoRunner.new(true)
+              if runner.process_args(argv)
+                exit runner.run
+              else
+                abort runner.options.banner + " tests..."
+              end
+            end
+          end
+        end
+
+        if Dir.exist?(ROOT_PATH + "/spec")
+          stage :spec_helper do
+            action { require 'spec_helper' }
+
+            command :rspec do
+              exit RSpec::Core::Runner.run(ARGV)
+            end
+          end
+        end
+
+      end
+
+    end
+  end
+end
+