option_parser

# File railties/lib/rails/commands/server.rb, line 21
      def option_parser(options)
        OptionParser.new do |opts|
          opts.banner = "Usage: rails server [mongrel, thin etc] [options]"
          opts.on("-p", "--port=port", Integer,
                  "Runs Rails on the specified port.", "Default: 3000") { |v| options[:Port] = v }
          opts.on("-b", "--binding=IP", String,
                  "Binds Rails to the specified IP.", "Default: localhost") { |v| options[:Host] = v }
          opts.on("-c", "--config=file", String,
                  "Uses a custom rackup configuration.") { |v| options[:config] = v }
          opts.on("-d", "--daemon", "Runs server as a Daemon.") { options[:daemonize] = true }
          opts.on("-u", "--debugger", "Enables the debugger.") do
            if RUBY_VERSION < '2.0.0'
              options[:debugger] = true
            else
              puts "=> Notice: debugger option is ignored since Ruby 2.0 and "                     "it will be removed in future versions."
            end
          end
          opts.on("-e", "--environment=name", String,
                  "Specifies the environment to run this server under (test/development/production).",
                  "Default: development") { |v| options[:environment] = v }
          opts.on("-P", "--pid=pid", String,
                  "Specifies the PID file.",
                  "Default: tmp/pids/server.pid") { |v| options[:pid] = v }

          opts.separator ""

          opts.on("-h", "--help", "Shows this help message.") { puts opts; exit }
        end
      end