final version

gistfile1.txt

  comma = ""
  last_index = doc.xpath('//*[not(*)][text()]').size.pred
    puts doc.xpath('//*[not(*)][text()]').map.with_index{ |n,i|
		if i == last_index
			comma = ""
		else
			comma = ","
		end

    	if is_number?(n.text)
			"'#{n.parent.name}.#{n.name}': #{n.text}" + comma
		else
			"'#{n.parent.name}.#{n.name}': '#{n.text}'" + comma
    	end
    }