def watch(path, *flags, &callback)
return Watcher.new(self, path, *flags, &callback) unless flags.include?(:recursive)
Dir.entries(path).each do |d|
next if d == '.' || d == '..'
d = File.join(path, d)
watch(d, *flags, &callback) if File.directory?(d)
end
rec_flags = [:create, :moved_to]
return watch(path, *((flags - [:recursive]) | rec_flags)) do |event|
callback.call(event) if flags.include?(:all_events) || !(flags & event.flags).empty?
next if (rec_flags & event.flags).empty? || !event.flags.include?(:isdir)
watch(event.absolute_name, *flags, &callback)
end
end