Method: Vhd::Library#checksum

Defined in:
lib/vhd/library.rb

#checksum ⇒ Object 



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# File 'lib/vhd/library.rb', line 85

def checksum
  checksum = 0

  @footer.each do |k,v|
    next if k == :checksum

    checksum += v.codepoints.inject(0) { |r,c| r += c }
  end

  @footer[:checksum] = ["%08x" % ((~checksum) & 0xFFFFFFFF)].pack("H*")
end