BundleMerger.h

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/*
 * BundleMerger.h
 *
 * Copyright (C) 2011 IBR, TU Braunschweig
 *
 * Written-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef BUNDLEMERGER_H_
#define BUNDLEMERGER_H_

#include "ibrcommon/data/BLOB.h"
#include "ibrdtn/data/Bundle.h"
#include <set>

namespace dtn
{
        namespace data
        {
                class BundleMerger
                {
                public:
                        class Chunk
                        {
                        public:
                                Chunk(Length, Length);
                                virtual ~Chunk();

                                bool operator<(const Chunk &other) const;

                                Length offset;
                                Length length;

                                static bool isComplete(Length length, const std::set<Chunk> &chunks);
                        };

                        class Container
                        {
                        public:
                                Container(ibrcommon::BLOB::Reference &ref);
                                virtual ~Container();
                                bool isComplete();

                                Bundle& getBundle();

                                friend Container &operator<<(Container &c, dtn::data::Bundle &obj);

                        private:
                                bool contains(Length offset, Length length) const;
                                void add(Length offset, Length length);

                                dtn::data::Bundle _bundle;
                                ibrcommon::BLOB::Reference _blob;
                                bool _initialized;
                                bool _hasFirstFragBlocksAdded;
                                bool _hasLastFragBlocksAdded;

                                std::set<Chunk> _chunks;
                                Length _appdatalength;
                        };

                        static Container getContainer();
                        static Container getContainer(ibrcommon::BLOB::Reference &ref);
                };
        }
}


#endif /* BUNDLEMERGER_H_ */