def parse_google query
    return unless query
    # alters google-style querystring into sphinx-style
    query = query.scan(/[^"\(\) ]*["\(][^"\)]*["\)]|[^"\(\) ]+/) # thanks chris2
    query.each_with_index do |token, index|
          
      if token =~ /^(.*?)\((.*)\)(.*?$)/
        token = query[index] = "#{$1}(#{parse_google $2})#{$3}" # recurse for parens
      end       
      
      case token
        when "OR"
          query[index] = "|"
        when "NOT"
          query[index] = "-#{query[index+1]}"
          query[index+1] = ""
        when "AND"
          query[index] = ""
        when /:/
          query[query.size] = "@" + query[index].sub(":", " ")
          query[index] = ""
      end
      
    end
    query.join(" ").squeeze(" ")
  end