files.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ACCESS_FILES_H
#define ACCESS_FILES_H

#include "common/scummsys.h"
#include "common/array.h"
#include "common/file.h"
#include "graphics/managed_surface.h"
#include "access/decompress.h"
#include "access/detection.h"

namespace Access {

class AccessEngine;

struct FileIdent {
    int _fileNum;
    int _subFile;

    FileIdent();
    FileIdent(int fileNum, int subfile) { _fileNum = fileNum; _subFile = subfile; }

    void load(Common::SeekableReadStream &s);
};

struct CellIdent : FileIdent {
    byte _cell;

    CellIdent();
    CellIdent(int cell, int fileNum, int subfile);
};

class FileManager;

class Resource {
    friend class FileManager;
private:
    Common::File _file;
    byte *_data;
public:
    Common::SeekableReadStream *_stream;
    int _size;

    Resource();
    Resource(byte *data, int size);
    ~Resource();
    byte *data();

    const char *getFileName() const;
};

class FileManager {
private:
    AccessEngine *_vm;

    void openFile(Resource *res, const Common::Path &filename);

    void handleFile(Resource *res);

    void handleScreen(Graphics::ManagedSurface *dest, Resource *res);

    void setAppended(Resource *file, const Common::Path &fileName);

    void gotoAppended(Resource *file, int subfile);

    void readIndex(Resource *res);

public:
    Common::Path _indexedFilename;
    Common::Array<uint32> _fileIndex;
    bool _setPaletteFlag;
public:
    FileManager(AccessEngine *vm);
    ~FileManager();

    bool existFile(const Common::Path &filename);

    Resource *loadFile(int fileNum, int subfile);

    Resource *loadFile(const FileIdent &fileIdent);

    Resource *loadRawFile(const Common::Path &filename);

    void loadScreen(int fileNum, int subfile);

    void loadScreen(const Common::Path &filename);

    void loadScreen(Graphics::ManagedSurface *dest, int fileNum, int subfile);
};

} // End of namespace Access

#endif /* ACCESS_FILES_H */