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require 'stringio'
module Packable
module Extensions #:nodoc:
module Array #:nodoc:
def self.included(base)
base.class_eval do
alias_method_chain :pack, :long_form
include Packable
extend ClassMethods
end
end
def pack_with_long_form(*arg)
return pack_without_long_form(*arg) if arg.first.is_a? String
pio = StringIO.new.packed
write_packed(pio, *arg)
pio.string
end
def write_packed(io, *how)
return io << self.original_pack(*how) if how.first.is_a? String
how = [:repeat => :all] if how.empty?
current = -1
how.each do |options|
repeat = options.is_a?(Hash) ? options.delete(:repeat) || 1 : 1
repeat = length - 1 - current if repeat == :all
repeat.times do
io.write(self[current+=1],options)
end
end
end
module ClassMethods #:nodoc:
def read_packed(io, *how)
raise "Can't support builtin format for arrays" if (how.length == 1) && (how.first.is_a? String)
how.inject [] do |r, options|
repeat = options.is_a? Hash ? options.delete(:repeat) || 1 : 1
(0...repeat).inject r do
r << io.read(options)
end
end
end
end
end
end
end
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