module Redis::Connection::CommandHelper

def build_command(args)
  command = [nil]
  args.each do |i|
    if i.is_a? Array
      i.each do |j|
        j = j.to_s
        j = j.encoding == Encoding::BINARY ? j : j.b
        command << "$#{j.bytesize}"
        command << j
      end
    else
      i = i.to_s
      i = i.encoding == Encoding::BINARY ? i : i.b
      command << "$#{i.bytesize}"
      command << i
    end
  end
  command[0] = "*#{(command.length - 1) / 2}"
  # Trailing delimiter
  command << ""
  command.join(COMMAND_DELIMITER)
end

def encode(string)
  string.force_encoding(Encoding.default_external)
end