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UUID.h

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/***************************************************************** lm-cpr beg
 *
 * AI Loom - A cross platform artificial intelligence framework
 * AI Loom is (c) Copyright 2003 Josh Brown
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile: UUID.h,v $
 * Date modified: $Date: 2003/09/30 04:10:23 $
 * Version:       $Revision: 1.2 $
 * -----------------------------------------------------------------
 *
 ************************************************************** lm-cpr-end */
#ifndef LM_UUID_H
#define LM_UUID_H

#include <iostream>
#include <string>
#include "Types.h"

namespace lm
{
   class UUID
   {
   public:
      static const UUID NullUUID;

   public:
      UUID();

      UUID(const std::string& uuid);

      UUID(const UUID& uuid);

      UUID& operator=(const UUID& uuid);

      static UUID generate();

   public:
      bool isNull() const;

      std::string str() const;

   public:
      bool operator==(const UUID& uuid) const;

      bool operator!=(const UUID& uuid) const;

      bool operator<(const UUID& uuid) const;

   private:
      void makeFromString(const std::string& uuid);

   private:
      union germ_uuid_t
      {
         struct standard_
         {
            u32 m0;
            u16 m1;
            u16 m2;
            u8  m3;
            u8  m4;
            u8  m5[6];
         } standard;

         struct packed_
         {
            u32 p0;
            u32 p1;
            u32 p2;
            u32 p3;
         } packed;
      };

      germ_uuid_t mUuid;
   };

   std::ostream& operator<<(std::ostream& out, const UUID& uuid);
}

#endif

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