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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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#ifndef UID_INCLUDE_ONCE
#define UID_INCLUDE_ONCE

#include <vlCore/checks.hpp>
#include <string>
#include <string.h>

namespace vl
{
  class Random;

  class VLCORE_EXPORT UUID
  {
  public:
    UUID();

    void generateVersion4(const Random& random);

    bool fromString(const char* guid_str);

    void fillString(char* guid_str, bool zero_terminate = true) const;

    void toStdString(std::string& guid_str) const;

    std::string toStdString() const;

    bool operator==(const UUID& other) const
    {
      return memcmp(this, &other, sizeof(*this)) == 0;
    }

    bool operator!=(const UUID& other) const
    {
      return memcmp(this, &other, sizeof(*this)) != 0;
    }

    bool operator<(const UUID& other) const
    {
      return memcmp(this, &other, sizeof(*this)) < 0;
    }

  public:
    unsigned int   mTimeLow;
    unsigned short mTimeMid;
    unsigned short mTimeHiAndVersion;
    unsigned char  mClockSeqHiAndReserved;
    unsigned char  mClockSeqLow;
    unsigned char  mNode[6];
  };
// ----------------------------------------------------------------------------
  VL_COMPILE_TIME_CHECK(sizeof(UUID) == 16)
// ----------------------------------------------------------------------------
}

// ----------------------------------------------------------------------------

#endif