class Thor::Actions::Directory

def execute!
  lookup = Util.escape_globs(source)
  lookup = config[:recursive] ? File.join(lookup, '**') : lookup
  lookup = file_level_lookup(lookup)
  files(lookup).sort.each do |file_source|
    next if File.directory?(file_source)
    next if config[:exclude_pattern] && file_source.match(config[:exclude_pattern])
    file_destination = File.join(given_destination, file_source.gsub(source, '.'))
    file_destination.gsub!('/./', '/')
    case file_source
    when /\.empty_directory$/
      dirname = File.dirname(file_destination).gsub(/\/\.$/, '')
      next if dirname == given_destination
      base.empty_directory(dirname, config)
    when /\.tt$/
      destination = base.template(file_source, file_destination[0..-4], config, &@block)
    else
      destination = base.copy_file(file_source, file_destination, config, &@block)
    end
  end
end

def file_level_lookup(previous_lookup)
  File.join(previous_lookup, '{*,.[a-z]*}')
end

def file_level_lookup(previous_lookup)
  File.join(previous_lookup, '*')
end

def files(lookup)
  Dir[lookup]
end

def files(lookup)
  Dir.glob(lookup, File::FNM_DOTMATCH)
end

def initialize(base, source, destination=nil, config={}, &block)
  @source = File.expand_path(base.find_in_source_paths(source.to_s))
  @block  = block
  super(base, destination, { :recursive => true }.merge(config))
end

def invoke!
  base.empty_directory given_destination, config
  execute!
end

def revoke!
  execute!
end