Module: CcipherFactory::Compression::ZlibDecompressor

Includes:
CcipherFactory::Common
Defined in:
lib/ccipher_factory/compression/zlib_decompressor.rb

Instance Method Summary collapse

Methods included from CcipherFactory::Common

#attach_mode, #cleanup_intOutputBuf, #cleanup_intOutputFile, #detach_mode, #disposeOutput, #intOutputBuf, #intOutputFile, #is_attach_mode?, #is_output_given?, #output, #output_obj, #sanitize_symbol, #write_to_output

Instance Method Details

#decompress_final ⇒ Object 



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# File 'lib/ccipher_factory/compression/zlib_decompressor.rb', line 56

def decompress_final
  @decompressor.final
end

#decompress_init(*args, &block) ⇒ Object 



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# File 'lib/ccipher_factory/compression/zlib_decompressor.rb', line 9

def decompress_init(*args, &block)

  if block
    instance_eval(&block)
    decompress_final
  else
    self
  end

end

#decompress_update(val) ⇒ Object 



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# File 'lib/ccipher_factory/compression/zlib_decompressor.rb', line 43

def decompress_update(val)
  if val.length > 0
    check_state
    begin
      res = @decompressor.update(val)
      write_to_output(res)
      res
    rescue Exception => ex
      raise DecompressionError, ex
    end
  end
end

#decompress_update_meta(val) ⇒ Object 



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# File 'lib/ccipher_factory/compression/zlib_decompressor.rb', line 20

def decompress_update_meta(val)
  if @decompressor.nil?
    begin
      intOutputBuf.write(val)
      Encoding.extract_meta(intOutputBuf) do |meta, bal|
        ts = BinStruct.instance.struct_from_bin(meta)

        case ts.oid
        when BTag.constant_value(:compression_zlib)
          @decompressor = Ccrypto::UtilFactory.instance(:decompression)
        else
          raise DecompressionError, "Unknown compression type '#{ts.id}'"
        end

        decompress_update(bal)
      end
    rescue Encoding::InsufficientData => e
    end
  else
    decompress_update(val)
  end
end