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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2005 The ScummVM project
*
* This program 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.
* This program 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 Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef COMMON_SAVEFILE_H
#define COMMON_SAVEFILE_H
#include "stdafx.h"
#include "common/scummsys.h"
#include "common/stream.h"
/**
* A class which allows game engines to load game state data.
* That typically means "save games", but also includes things like the
* IQ points in Indy3.
*
* @todo Add error checking abilities.
* @todo Change base class to SeekableReadStream; or alternatively,
* add a simple 'skip()' method which would allow skipping
* a number of bytes in the savefile.
*/
class InSaveFile : public Common::ReadStream {
public:
virtual ~InSaveFile() {}
virtual bool readingFailed() const { return false; }
//bool eof() const;
};
/**
* A class which allows game engines to save game state data.
* That typically means "save games", but also includes things like the
* IQ points in Indy3.
*
* @todo Add error checking abilities.
*/
class OutSaveFile : public Common::WriteStream {
public:
virtual ~OutSaveFile() {}
virtual bool writingFailed() const { return false; }
};
/**
* Convenience intermediate class, to be removed.
*/
class SaveFile : public InSaveFile, public OutSaveFile {
public:
};
class SaveFileManager {
public:
virtual ~SaveFileManager() {}
/**
* Open the file with name filename in the given directory for saving.
* @param filename the filename
* @return pointer to a SaveFile object, or NULL if an error occured.
*/
virtual OutSaveFile *openForSaving(const char *filename) = 0;
/**
* Open the file with name filename in the given directory for loading.
* @param filename the filename
* @return pointer to a SaveFile object, or NULL if an error occured.
*/
virtual InSaveFile *openForLoading(const char *filename) = 0;
virtual void listSavefiles(const char * /* prefix */, bool *marks, int num) = 0;
/** Get the path to the save game directory. */
virtual const char *getSavePath() const;
};
class DefaultSaveFileManager : public SaveFileManager {
public:
virtual OutSaveFile *openForSaving(const char *filename);
virtual InSaveFile *openForLoading(const char *filename);
virtual void listSavefiles(const char * /* prefix */, bool *marks, int num);
protected:
SaveFile *makeSaveFile(const char *filename, bool saveOrLoad);
};
#endif
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