Crack with a Nokogiri SAX parser

crack_on_speed.rb

require "crack"
require "nokogiri"

module NokogiriParser
  class Document < Nokogiri::XML::SAX::Document

    def stack
      @stack ||= []
    end

    def start_element(name, attrs = [])
      stack.push Crack::XMLUtilityNode.new(name, Hash[*attrs.flatten])
    end

    def end_element(name)
      if stack.size > 1
        last = stack.pop
        stack.last.add_node last
      end
    end

    def characters(string)
      stack.last.add_node(string) unless string.strip.length == 0 || stack.empty?
    end

    alias cdata_block characters

  end
end

document = NokogiriParser::Document.new
parser = Nokogiri::XML::SAX::Parser.new document

xml = File.read "some.xml"

Crack::XML.parser = parser
Crack::XML.parse xml

result = document.stack.length > 0 ? document.stack.pop.to_hash : {}