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137 lines
3.5 KiB
C++
137 lines
3.5 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the AUTHORS
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef STARK_FORMATS_BIFF_H
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#define STARK_FORMATS_BIFF_H
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#include "common/array.h"
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#include "common/scummsys.h"
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namespace Stark {
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class ArchiveReadStream;
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namespace Formats {
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class BiffObject;
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/**
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* A tree-style container for BiffObjects
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*
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* Users of this class must provide a factory method for the BiffObject subclasses
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* contained in the archive. This class can only read the archive's structure
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* and not specific object types.
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*/
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class BiffArchive {
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public:
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typedef BiffObject *(*ObjectBuilder)(uint32 type);
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BiffArchive(ArchiveReadStream *stream, ObjectBuilder objectBuilder);
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~BiffArchive();
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/** List the objects at the root level of the archive */
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Common::Array<BiffObject *> listObjects();
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/** List objects recursively matching the template parameter type */
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template<class T>
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Common::Array<T *> listObjectsRecursive();
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private:
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void read(ArchiveReadStream *stream);
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BiffObject *readObject(ArchiveReadStream *stream, BiffObject *parent);
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ObjectBuilder _objectBuilder;
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uint32 _version;
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Common::Array<BiffObject *> _rootObjects;
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};
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/**
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* An object which can be read from a BiffArchive
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*
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* Each object has a list of children objects, resulting in a tree structure
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*/
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class BiffObject {
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public:
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BiffObject();
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virtual ~BiffObject();
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/**
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* Used to read the object data from the stream
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*/
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virtual void readData(ArchiveReadStream *stream, uint32 dataLength) = 0;
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/** Get the object type */
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uint32 getType() const;
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/** List children recursively matching the template parameter type */
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template<class T>
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Common::Array<T *> listChildrenRecursive();
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/** Add an object to the children list */
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void addChild(BiffObject *child);
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protected:
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uint32 _type;
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uint32 _u3;
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uint32 _version;
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BiffObject *_parent;
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Common::Array<BiffObject *> _children;
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friend class BiffArchive;
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};
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template<class T>
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Common::Array<T *> BiffArchive::listObjectsRecursive() {
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Common::Array<BiffObject *> objects = listObjects();
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Common::Array<T *> array;
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for (uint i = 0; i < objects.size(); i++) {
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array.push_back(objects[i]->listChildrenRecursive<T>());
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}
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return array;
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}
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template<class T>
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Common::Array<T *> BiffObject::listChildrenRecursive() {
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Common::Array<T *> list;
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for (uint i = 0; i < _children.size(); i++) {
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if (_children[i]->getType() == T::TYPE) {
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// Found a matching child
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list.push_back(static_cast<T *>(_children[i]));
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}
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// Look for matching resources in the child's children
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list.push_back(_children[i]->listChildrenRecursive<T>());
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}
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return list;
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}
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} // End of namespace Formats
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} // End of namespace Stark
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#endif // STARK_FORMATS_BIFF_H
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