text: /*
   * #%L
   * %%
   * Copyright (C) 2020 BMW Car IT GmbH
   * %%
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   * #L%
   */
  
  #pragma once
  
  #include <vector>
  #include <memory>
  #include <queue>
  
  namespace mococrw
  {
  
  class CipherMemoryStrategyI {
  public:
      virtual ~CipherMemoryStrategyI() = default;
  
      virtual void write(std::vector<uint8_t> block) = 0;
      virtual std::vector<uint8_t> read(size_t blockSize) = 0;
      virtual std::vector<uint8_t> readAll() = 0;
  };
  
  
  class QueueOfVectorsMemoryStrategy: public CipherMemoryStrategyI {
  public:
      void write(std::vector<uint8_t> chunk) override;
      std::vector<uint8_t> read(size_t chunkSize) override;
      std::vector<uint8_t> readAll() override;
  
  private:
      std::vector<uint8_t> _readCompleteBlock();
      void _readPartialBlock(size_t requestedSize, std::vector<uint8_t>& output);
      std::deque<std::vector<uint8_t>> _queue;
      size_t _totalBytesStored = 0;
  };
  
  } // mococrw
  