//----------------------------------------------------------------------------
//  EgalTech 2015-2019
//----------------------------------------------------------------------------
// File : EGnEgtUUID.h       Data : 16.05.19        Versione : 2.1e3
// Contenuto : Dichiarazione struttura EgtUUID e sue funzioni.
//
//
//
// Modifiche : 01.06.15 DS Creazione modulo.
//             16.05.19 DS Aggiunta funzione IsUUID.
//
//----------------------------------------------------------------------------

#pragma once

#include <string>
#include <vector>

//----------------------- Macro per import/export ----------------------------
#undef EGN_EXPORT
#if defined( I_AM_EGN)            // da definirsi solo nella DLL
   #define EGN_EXPORT __declspec( dllexport)
#else
   #define EGN_EXPORT __declspec( dllimport)
#endif

//----------------------------------------------------------------------------
struct EgtUUID {
   unsigned int   Data1 ;
   unsigned short Data2 ;
   unsigned short Data3 ;
   unsigned char  Data4[8] ;
   EgtUUID( void)
         { Clear() ; }
   bool Clear( void)
         { Data1 = 0 ; Data2 = 0; Data3 = 0 ; memset( Data4, 0, 8) ; return true ; }
   bool operator ==( const EgtUUID& other) const
         { return ( Data1 == other.Data1 && Data2 == other.Data2 && Data3 == other.Data3 && 
                    memcmp( Data4, other.Data4, 8) == 0) ; }
   bool operator !=( const EgtUUID& other) const
         { return ! operator ==( other) ; }
} ;

//----------------------------------------------------------------------------
EGN_EXPORT bool CreateEgtUUID( EgtUUID& uuId) ;
EGN_EXPORT std::string ToString( const EgtUUID& uuId) ;
EGN_EXPORT bool FromString( const std::string& sVal, EgtUUID& uuId) ;
inline bool IsUUID( const std::string& sVal)
               { EgtUUID Tmp ; return FromString( sVal, Tmp) ; }

//----------------------------------------------------------------------------
namespace std {
   template <>
   struct hash<EgtUUID>
   {
       typedef EgtUUID       argument_type ;
       typedef std::size_t   result_type ;
       std::size_t operator()( EgtUUID key) const {
          return ( key.Data1 + key.Data2 + key.Data3 + key.Data4[0] + key.Data4[7]) ;
       }
   };
}

//----------------------------------------------------------------------------
typedef std::vector<EgtUUID> UUIDVECTOR ;