class Middleman::Rack

def process_request(env, req, res)
  start_time = Time.now
  request_path = URI.decode(env['PATH_INFO'].dup)
  if request_path.respond_to? :force_encoding
    request_path.force_encoding('UTF-8')
  end
  request_path = ::Middleman::Util.full_path(request_path, @middleman)
  full_request_path = File.join(env['SCRIPT_NAME'], request_path) # Path including rack mount
  # Run before callbacks
  @middleman.execute_callbacks(:before)
  # Get the resource object for this path
  resource = @middleman.sitemap.find_resource_by_destination_path(request_path.gsub(' ', '%20'))
  # Return 404 if not in sitemap
  return not_found(res, full_request_path) unless resource && !resource.ignored?
  # If this path is a binary file, send it immediately
  return send_file(resource, env) if resource.binary?
  res['Content-Type'] = resource.content_type || 'text/plain'
  begin
    # Write out the contents of the page
    res.write resource.render({}, rack: { request: req })
    # Valid content is a 200 status
    res.status = 200
  rescue Middleman::TemplateRenderer::TemplateNotFound => e
    res.write "Error: #{e.message}"
    res.status = 500
  end
  # End the request
  logger.debug "== Finishing Request: #{resource.destination_path} (#{(Time.now - start_time).round(2)}s)"
  halt res.finish
end