add some method for libxml

module Xml
  def self.load(file)
    xml = LibXML::XML::Parser.file(file)
    doc = xml.parse
    root = doc.root
    root.create_method
    return doc.root
  end
 
end
module LibXML
  module XML
    class Document
    end
    class Node
      def create_method
        hash = {}
        self.children.each do |node|
          next if node.blank?
          next if node.name.blank?
          key = node.name=="name" ? "g_#{node.name}" : node.name
          hash[key].blank? ? (hash[key]=[node])  : (hash[key] << node)
          self.class.send(:define_method,key){return get_attr(node)}#{sub_attr(node)}
        end if self.child?
        keys = hash.keys
        keys.each do |key|
          self.class.send(:define_method,key.pluralize){return get_attrs(hash[key])}#{sub_attr(node)}
        end  if !keys.blank?
      end
      def get_attrs(h)
        arr = h.flatten
        return h.flatten
      end
      def method_missing(name)
         puts "error:#{name}______fantong.com"
      end
      def get_attr(attr)
        attr.create_method if attr.child?
        return attr
      end
    end
  end
end