Method: Binenc::Ruby::SBLFactory#from_bin

Defined in:
lib/binenc/factory/sbl_factory/sbl_factory.rb

#from_bin(bin) ⇒ Object 



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# File 'lib/binenc/factory/sbl_factory/sbl_factory.rb', line 25

def from_bin(bin)
  
  seq = ASN1Object.decode(bin).value

  if seq.length > structure.length
    logger.warn "Given binary has more field (#{seq.length}) than the defined specification (#{structure.length}). Different version of structure?"
  elsif structure.length > seq.length
    logger.warn "Defined specification has more field (#{structure.length}) than given binary (#{seq.length}). Different version of structure?"
  end

  structure.each_index do |i|
    name = structure[i]
    
    if seq[i].is_a?(String)
      # begin block is to cater sequence but tagged as binary field
      # Therefore during 1st decode, it will become an array with actual value, 
      # no longer a ASN1 encoded field.
      # Different if the field is tagged as sequence, then this will not happened
      begin
        val = ASN1Object.decode(seq[i]).value
      rescue OpenSSL::ASN1::ASN1Error
        val = seq[i]
      end
    else
      val = seq[i]
    end

    case val
    when OpenSSL::BN
      val = val.to_i
    end
    create_instance_method(name, val)
  end

  self

end