module Docs  class Parser    def initialize(content)      @content = content    end     def html      @html ||= document? ? parse_as_document : parse_as_fragment    end     private     def document?      @content =~ /\A\s*<!doctype/i    end     def parse_as_document      document = Nokogiri::HTML.parse @content, nil, 'UTF-8'      document.at_css 'body'    end     def parse_as_fragment      Nokogiri::HTML.fragment @content, 'UTF-8'    end  endend