XMLPrototype - so what

メソッドでアクセスできると、みょーに気持ちいいんだよなぁ…
JavaScriptの影響かしら？



require "rexml/document"
class XMLPrototype

  def initialize(source)

    @root = (source.is_a? REXML::Element) ? source : REXML::Document.new(source).root

  end
  def [](name)

    @root.attribute(name)

  end
  def method_missing(name, *args, &block)

    elements = *__elements__(name)
    unless elements

      REXML::Element.method_defined?(name) ? @root.send(name, *args, &block) : nil

    else

      elements

    end

  end
  def to_a(name=nil)

    name ? __elements__(name) : [self]

  end
  def to_s

    @root.to_s

  end
  private

  def __elements__(name)

    path  = name.to_s.gsub("_", ":")

    @root.get_elements(path).collect {|element| XMLPrototype.new(element)}

  end

end

こんな感じで。



require "open-uri"
xml = nil

open("http://b.hatena.ne.jp/hotentry?mode=rss") {|f| xml = XMLPrototype.new(f.read)}
xml.channel.items.rdf_Seq.rdf_li.each {|li|

  puts li["rdf:resource"].value

}