Removing empty directories (non-recursive) (See related posts)

require 'fileutils'

class ReorgBot

  attr_accessor :path
  attr_accessor :dir

  def initialize(path)
    raise ArgumentError, "path '#{path}' does not exist!" unless File.exist?(path)
    raise ArgumentError, "path '#{path} is not a directory you dolt!" unless File.directory?(path)
    @path = path
    @dir = Dir.new(path)
  end

  def dirs
    @dir.select { |f| File.directory?(File.join(@path, f)) }
  end

  def empty_dirs
    dirs.select { |d| Dir[File.join(@path, d, '*')].empty? }
  end

  def non_empty_dirs
    dirs - empty_dirs
  end

  def remove_empty_dirs
    empty_dirs.each do |d|
      FileUtils.rm_rf(File.join(@path, d))
    end
  end
end

bot = ReorgBot.new('/tmp/reorg_test')
bot.remove_empty_dirs