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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 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 MM_SHARED_XEEN_CC_ARCHIVE_H
#define MM_SHARED_XEEN_CC_ARCHIVE_H
#include "common/archive.h"
#include "common/stream.h"
namespace MM {
namespace Shared {
namespace Xeen {
/**
* Details of a single entry in a CC file index
*/
struct CCEntry {
uint16 _id;
int _offset;
uint16 _size;
int _writeOffset;
CCEntry() : _id(0), _offset(0), _size(0), _writeOffset(0) {
}
CCEntry(uint16 id, uint32 offset, uint32 size)
: _id(id), _offset(offset), _size(size) {
}
};
/**
* Base Xeen CC file implementation
*/
class BaseCCArchive : public Common::Archive {
protected:
Common::Array<CCEntry> _index;
/**
* Load the index of a given CC file
*/
void loadIndex(Common::SeekableReadStream &stream);
/**
* Saves out the contents of the index. Used when creating savegames
*/
void saveIndex(Common::WriteStream &stream);
/**
* Given a resource name, returns whether an entry exists, and returns
* the header index data for that entry
*/
virtual bool getHeaderEntry(const Common::Path &resourceName, CCEntry &ccEntry) const;
/**
* Given a resource Id, returns whether an entry exists, and returns
* the header index data for that entry
*/
virtual bool getHeaderEntry(uint16 id, CCEntry &ccEntry) const;
public:
/**
* Hash a given filename to produce the Id that represents it
*/
static uint16 convertNameToId(const Common::Path &resourceName);
public:
BaseCCArchive() {
}
// Archive implementation
bool hasFile(const Common::Path &path) const override;
int listMembers(Common::ArchiveMemberList &list) const override;
const Common::ArchiveMemberPtr getMember(const Common::Path &path) const override;
};
/**
* Xeen CC file implementation
*/
class CCArchive : public BaseCCArchive {
private:
Common::Path _filename;
Common::String _prefix;
bool _encoded;
protected:
bool getHeaderEntry(const Common::Path &resourceName, CCEntry &ccEntry) const override;
public:
CCArchive(const Common::Path &filename, bool encoded);
CCArchive(const Common::Path &filename, const Common::String &prefix, bool encoded);
~CCArchive() override;
// Archive implementation
Common::SeekableReadStream *createReadStreamForMember(const Common::Path &path) const override;
};
} // namespace Xeen
} // namespace Shared
} // namespace MM
#endif
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