gistfile1.rb

require 'yaml'

def dir_to_array(dir)
    entries = []
    Dir.entries(dir).each do |entry|
        if entry == "." or entry == ".."
            next
        end
        p "#{dir}/#{entry}"
        if File.directory?("#{dir}/#{entry}")
            entries.push({ "#{entry}" => dir_to_array("#{dir}/#{entry}")})
        else
            entries.push entry
        end
    end
    return entries
end

File.open('books.yml', 'wb') do |out|
    YAML.dump({"books" => dir_to_array(ARGV[0])}, out)
end