# encoding: UTF-8 module BEncodr module Dictionary module Generic module InstanceMethods # Encodes an array into a bencoded dictionary. Bencoded dictionaries are encoded as a 'd' followed by a list of # alternating keys and their corresponding values followed by an 'e'. Keys appear in sorted order (sorted as raw # strings, not alphanumerics). # # {:cow => "moo", :seven => 7}.bencodr #=> "d3:cow3:moo5:seveni7ee" # # @return [::String] the bencoded dictionary def bencode (respond_to?(:to_h) ? to_h : to_hash).bencode end end end # Registers a class as an object that can be converted into a bencoded dictionary. Class must have instance method # to_h or to_hash. # # class MyClass # def to_h # {:a => :a, :b => 1} # end # end # # BEncodr::String.register MyClass # my_class = MyClass.new # my_class.bencodr #=> "d1:a1:a1:bi1ee" # # @param [Class#to_h, Class#to_hash] type the class to add the bencodr instance method to def self.register(type) type.send :include, Generic::InstanceMethods end module Hash module InstanceMethods # Encodes an array into a bencoded dictionary. Bencoded dictionaries are encoded as a 'd' followed by a list of # alternating keys and their corresponding values followed by an 'e'. Keys appear in sorted order (sorted as raw # strings, not alphanumerics). # # {:cow => "moo", :seven => 7}.bencodr #=> "d3:cow3:moo5:seveni7ee" # # @return [::String] the bencoded dictionary def bencode keys.sort{|a, b| a.to_s <=> b.to_s}.collect do |key| key.to_s.bencode + self[key].bencode end.unshift(:d).push(:e).join end end ::Hash.send :include, InstanceMethods end end end