ibrdtn/ibrdtn/data/SDNV.h

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/*
 *    Copyright 2005-2006 Intel Corporation
 *
 *    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.
 *
 *    THIS FILE BASES ON DTN_2.4.0/SERVLIB/BUNDLING/SDNV.H
 */

#include <sys/types.h>
#include <iostream>
#include <stdio.h>

#ifndef _SDNV_H_
#define _SDNV_H_

namespace dtn
{
        namespace data
        {
                class SDNV
                {
                public:
                        static const size_t MAX_LENGTH = 10;

                        SDNV(const u_int64_t value);

                        SDNV();

                        size_t getLength() const;

                        static size_t getLength(const u_int64_t &value);
                        static size_t getLength(const unsigned char *data);

                        u_int64_t getValue() const;

                        size_t decode(const char *data, const size_t len);

                        size_t encode(char *data, const size_t len) const;

                        size_t operator=(const size_t &value);

                        bool operator==(const SDNV &value) const;
                        bool operator!=(const SDNV &value) const;

                        SDNV operator+(const SDNV &value);
                        SDNV& operator+=(const SDNV &value);

                        SDNV operator-(const SDNV &value);
                        SDNV& operator-=(const SDNV &value);

                        bool operator&(const size_t &value) const;

                private:
                        friend std::ostream &operator<<(std::ostream &stream, const dtn::data::SDNV &obj);
                        friend std::istream &operator>>(std::istream &stream, dtn::data::SDNV &obj);

                        // INLINE-FUNCTIONS
                        inline static size_t encoding_len(u_int16_t val){ return encoding_len((u_int64_t)val); }
                        inline static size_t encoding_len(u_int32_t val){ return encoding_len((u_int64_t)val); }
                        inline static int encode(u_int16_t val, char* bp, size_t len){ return encode((u_int64_t)val, (u_char*)bp, len); }
                        inline static int encode(u_int32_t val, char* bp, size_t len){ return encode((u_int64_t)val, (u_char*)bp, len); }
                        inline static int encode(u_int64_t val, char* bp, size_t len){ return encode(val, (u_char*)bp, len); }
                        inline static int encode(float val, char* bp, size_t len){ return encode(val, (u_char*)bp, len); }
                        inline static int decode(char* bp, size_t len, u_int64_t* val){ return decode((u_char*)bp, len, val); }
                        inline static int decode(char* bp, size_t len, u_int32_t* val){ return decode((u_char*)bp, len, val); }

                        static size_t encoding_len(u_int64_t val);
                        static size_t encoding_len(float val_f);
                        static int encode(u_int64_t val, u_char* bp, size_t len);
                        static int encode(float val_f, u_char* bp, size_t len);
                        static int decode(const u_char* bp, size_t len, float* val_f);
                        static int decode(const u_char* bp, size_t len, u_int64_t* val);
                        static int decode(const u_char* bp, size_t len, u_int32_t* val);
                        static int decode(const u_char* bp, size_t len, u_int16_t* val);
                        static size_t len(const u_char* bp);

                        u_int64_t _value;
                };
        }
}

#endif /* _SDNV_H_ */