iTunes cleanup

#!/usr/bin/env ruby
require 'rubygems'
require 'nokogiri'

class Cleaner
  def read
    f = File.open("nelson.xml")
    @doc = Nokogiri::XML(f)
    f.close
  end

  def save
    f = File.open("nelson-new.xml", 'w')
    f.puts @doc
    f.close
  end

  def find
    list = []
    # Find each dictionary item and loop through it
    @doc.xpath('/plist/dict/dict/dict').each do |node|
      hash     = {}
      last_key = nil

      # Stuff the key value pairs in to hash.  We know a key is followed by
      # a value, so we'll just skip blank nodes, save the key, then when we
      # find the value, add it to the hash
      node.children.each do |child|
        next if child.blank? # Don't care about blank nodes

        if child.name == 'key'
          # Save off the key
          last_key = child.text
        else
          # Use the key we saved
          hash[last_key] = child.text
        end
      end 
      if hash['Location']  =~ /\/mp3\/mp3\//
        puts hash['Location']
        node.remove
      end
      #list << hash # push on to our list 
    end
  end

end

c = Cleaner.new
c.read
c.find
c.save