uuid.h

/*
 * uuid.h
 * This file is part of dbPager Classes Library (DCL)
 *
 * Copyright (c) 2008 Dennis Prochko <wolfsoft@mail.ru>
 *
 * DCL 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 version 3.
 *
 * DCL 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 DCL; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

#ifndef _UUID_H_
#define _UUID_H_

#include <string>

namespace dbp {


class uuid {
        friend std::istream& operator>>(std::istream&, uuid&);
        friend std::ostream& operator<<(std::ostream&, const uuid&);
public:
        uuid();
        uuid(const std::string&);
        uuid(const char*);
        uuid(const uuid&);
        uuid& operator=(const uuid&);
        bool operator==(const uuid&) const;
        bool operator<(const uuid&) const;
        bool operator>(const uuid &rhs) const {
                return (rhs < *this);
        }
        bool operator<=(const uuid &rhs) const {
                return !(rhs < *this);
        }
        bool operator>=(const uuid& rhs) const {
                return !(*this < rhs);
        }
        bool operator!=(const uuid &rhs) const {
                return !(*this == rhs);
        }
        bool operator!() const {
                return empty();
        }
        typedef bool (uuid::*bool_type)() const;
        operator bool_type() const {
                return empty() ? NULL : &uuid::empty;
        }
        void generate();
        void clear();
        bool empty() const;
        std::string str() const;
private:
        static const int size = 16;
        unsigned char _data[size];
        void assign(const std::string&);
};

}

#endif /*_UUID_H_*/