MCDataStorage.hpp

/*
 *  This file is part of the AiBO+ project
 *
 *  Copyright (C) 2005-2016 Csaba Kertész (csaba.kertesz@gmail.com)
 *
 *  AiBO+ is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  AiBO+ is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */

#pragma once

#include "MCContainers.hpp"

#include <boost/unordered_map.hpp>

#include <iostream>

class MCBinaryData;
class MCDataContainer;
class MCDataStorage;

namespace MC
{
typedef boost::unordered_map<std::string, MCBinaryData*> StrBinaryDataPtrMap;

typedef boost::shared_ptr<MCDataContainer> DataContainerSPtr;
typedef boost::shared_ptr<MCDataStorage> DataStorageSPtr;

typedef boost::unordered_map<std::string, DataContainerSPtr> StrDataContainerSPtrMap;
}

class MCDataStorage
{
public:

  MCDataStorage(const std::string& name, bool portable = false);

  virtual ~MCDataStorage();

  bool IsPortable() const;

  bool IsCompact() const;

  std::string GetName() const;

  void SetName(const std::string& name);

  void DumpContainerNames() const;

  bool LoadFromFile(const std::string& file_name);

  bool SaveToFile(const std::string& file_name);

  static MCDataStorage* Decode(const MCBinaryData& data, bool portable = false);

  MCBinaryData* Encode();

private:

  void LoadFromInputStream(std::istream& input_stream, unsigned int max_bytes);

  void SaveToOutputStream(std::ostream& output_stream);

  virtual MCDataContainer* DecodeContainer(const MCBinaryData& data);

public:

  MC::StringList GetContainerNames() const;

  MC::DataContainerSPtr CreateContainer(const std::string& container_name);

  MC::DataContainerSPtr GetContainer(const std::string& container_name);

  void OptimizeCachedContainers();

  void RemoveContainer(const std::string& container_name);

  void Clear();

  static void SetVerbose(bool new_state);

  static bool IsVerbose();

private:
  // STATIC VARIABLES
  static std::string VersionID;
  // NON-STATIC VARIABLES
  std::string Name;
  bool Portable;
  MC::StrBinaryDataPtrMap BinaryContainers;
  MC::StrDataContainerSPtrMap DataContainers;
};