Random.h

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/*
 * Random.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 RANDOM_H_
#define RANDOM_H_

#include <string>

namespace dtn
{
        namespace utils
        {
                class Random
                {
                public:
                        virtual ~Random();

                        static int gen_number();

                        static const std::string gen_chars(const size_t &length);

                private:
                        Random();

                        static Random& getInstance();

                        // internal method to generate a number
                        int _gen_number() const;

                        // internal method to generate a random char
                        const std::string _gen_chars(const size_t &length) const;
                };
        }
}

#endif /* RANDOM_H_ */