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/* 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef SCUMM_FILE_H
#define SCUMM_FILE_H
#include "common/file.h"
#include "common/stream.h"
#include "scumm/detection.h"
namespace Scumm {
class BaseScummFile : public Common::File {
protected:
byte _encbyte;
public:
BaseScummFile() : _encbyte(0) {}
void setEnc(byte value) { _encbyte = value; }
bool open(const Common::String &filename) override = 0;
virtual bool openSubFile(const Common::String &filename) = 0;
int32 pos() const override = 0;
int32 size() const override = 0;
bool seek(int32 offs, int whence = SEEK_SET) override = 0;
// Unused
#if 0
virtual bool eos() const = 0;
virtual uint32 read(void *dataPtr, uint32 dataSize) = 0;
#endif
};
class ScummFile : public BaseScummFile {
protected:
int32 _subFileStart;
int32 _subFileLen;
bool _myEos; // Have we read past the end of the subfile?
void setSubfileRange(int32 start, int32 len);
void resetSubfile();
public:
ScummFile();
bool open(const Common::String &filename) override;
bool openSubFile(const Common::String &filename) override;
void clearErr() override { _myEos = false; BaseScummFile::clearErr(); }
bool eos() const override;
int32 pos() const override;
int32 size() const override;
bool seek(int32 offs, int whence = SEEK_SET) override;
uint32 read(void *dataPtr, uint32 dataSize) override;
};
class ScummDiskImage : public BaseScummFile {
private:
Common::SeekableReadStream *_stream;
byte _roomDisks[59], _roomTracks[59], _roomSectors[59];
byte *_buf;
const GameSettings _game;
const Common::String _disk1, _disk2;
int _openedDisk;
int _numGlobalObjects;
int _numRooms;
int _numCostumes;
int _numScripts;
int _numSounds;
const int *_resourcesPerFile;
bool openDisk(char num);
bool generateIndex();
bool generateResource(int res);
uint16 extractIndex(Common::WriteStream *out);
uint16 extractResource(Common::WriteStream *out, int res);
byte fileReadByte();
uint16 fileReadUint16LE();
public:
ScummDiskImage(const char *disk1, const char *disk2, GameSettings game);
bool open(const Common::String &filename) override;
bool openSubFile(const Common::String &filename) override;
void close() override;
bool eos() const override { return _stream->eos(); }
int32 pos() const override { return _stream->pos(); }
int32 size() const override { return _stream->size(); }
bool seek(int32 offs, int whence = SEEK_SET) override { return _stream->seek(offs, whence); }
uint32 read(void *dataPtr, uint32 dataSize) override;
};
struct SteamIndexFile {
byte id;
Common::Platform platform;
const char *pattern;
const char *indexFileName;
const char *executableName;
int32 start;
int32 len;
};
const SteamIndexFile *lookUpSteamIndexFile(Common::String pattern, Common::Platform platform);
class ScummSteamFile : public ScummFile {
private:
const SteamIndexFile &_indexFile;
bool openWithSubRange(const Common::String &filename, int32 subFileStart, int32 subFileLen);
public:
ScummSteamFile(const SteamIndexFile &indexFile) : ScummFile(), _indexFile(indexFile) {}
bool open(const Common::String &filename) override;
};
} // End of namespace Scumm
#endif
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