extratools.h

//  BSD 3-Clause License
//
//  Copyright (c) 2020, AquariusPower<https://github.com/AquariusPower>
//  All rights reserved.
//
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//  modification, are permitted provided that the following conditions are met:
//
//  * Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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//    this software without specific prior written permission.
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#ifndef __EXTRATOOLS_H__
  #define __EXTRATOOLS_H__
  
  typedef const char cchar;

  class envvars
  {
    public:
      static const char* GetStr(cchar* pcID,cchar* pcDefaultValue="");
      static long GetLong(cchar* pcID,long lDefaultValue=0);
      static bool IsTrue(cchar* pcID);
      ulong GetULong(cchar* pcID,ulong ulDefaultValue);
      double GetFloatingDouble(cchar* pcID,double dDefaultValue);
  };
  
  typedef void (*timeoutfunc)();
  class misctools
  {
    public:
      static ulong RandomClock100();
      static ulong GetNowInNanos();
      template <typename TypeFunc, typename TypeDur, class... TypeArgs> 
        static std::result_of_t<TypeFunc&&(TypeArgs&&...)> 
          TimeoutAnyFunction(TypeFunc&& func, TypeDur wait, TypeArgs&&... args);
  };
  
#endif //__EXTRATOOLS_H__