normalize_env

# File actionpack/lib/action_controller/renderer.rb, line 32
    def self.normalize_env(env) # :nodoc:
      new_env = {}

      env.each_pair do |key, value|
        case key
        when :https
          value = value ? "on" : "off"
        when :method
          value = -value.upcase
        end

        key = RACK_KEY_TRANSLATION[key] || key.to_s

        new_env[key] = value
      end

      if new_env["HTTP_HOST"]
        new_env["HTTPS"] ||= "off"
        new_env["SCRIPT_NAME"] ||= ""
      end

      if new_env["HTTPS"]
        new_env["rack.url_scheme"] = new_env["HTTPS"] == "on" ? "https" : "http"
      end

      new_env
    end