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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 GLK_BLORB_H
#define GLK_BLORB_H
#include "glk/glk_types.h"
#include "glk/streams.h"
#include "common/archive.h"
#include "common/array.h"
namespace Glk {
/**
* Describes one chunk of the Blorb file.
*/
struct ChunkEntry {
uint _type;
uint _number;
uint _id;
size_t _offset;
size_t _size;
Common::String _filename;
};
/**
* Blorb file manager
*/
class Blorb : public Common::Archive {
private:
Common::String _filename;
Common::FSNode _fileNode;
InterpreterType _interpType;
Common::Array<ChunkEntry> _chunks; ///< list of chunk descriptors
private:
/**
* Parses the Blorb file index to load in a list of the chunks
*/
Common::ErrorCode load();
public:
/**
* Constructor
*/
Blorb(const Common::String &filename, InterpreterType interpType);
/**
* Constructor
*/
Blorb(const Common::FSNode &fileNode, InterpreterType interpType);
/**
* Check if a member with the given name is present in the Archive.
* Patterns are not allowed, as this is meant to be a quick File::exists()
* replacement.
*/
virtual bool hasFile(const Common::String &name) const override;
/**
* Add all members of the Archive to list.
* Must only append to list, and not remove elements from it.
*
* @return the number of names added to list
*/
virtual int listMembers(Common::ArchiveMemberList &list) const override;
/**
* Returns a ArchiveMember representation of the given file.
*/
virtual const Common::ArchiveMemberPtr getMember(const Common::String &name) const override;
/**
* Create a stream bound to a member with the specified name in the
* archive. If no member with this name exists, 0 is returned.
* @return the newly created input stream
*/
virtual Common::SeekableReadStream *createReadStreamForMember(const Common::String &name) const override;
/**
* Returns true if a given filename specifies a Blorb file
*/
static bool isBlorb(const Common::String &filename);
};
} // End of namespace Glk
#endif
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