OCCT

// Created on: 2016-01-06
// Created by: Andrey Betenev
// Copyright (c) 2016 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <Standard_OutOfMemory.hxx>

#include <algorithm>
#include <cstdlib>
#include <cstring>

//=================================================================================================

Standard_OutOfMemory::Standard_OutOfMemory(const char* const theMessage)
{
  myBuffer[0] = '\0';
  // call explicitly own method (non-virtual call)
  Standard_OutOfMemory::SetMessageString(theMessage);
}

//=================================================================================================

const char* Standard_OutOfMemory::what() const noexcept
{
  return myBuffer;
}

//=================================================================================================

void Standard_OutOfMemory::SetMessageString(const char* const theMessage)
{
  // restrict length of the message by buffer size
  const size_t aLength = (theMessage ? std::min(std::strlen(theMessage), sizeof(myBuffer) - 1) : 0);

  myBuffer[aLength] = '\0';
  if (aLength > 0)
  {
    std::memcpy(myBuffer, theMessage, aLength);
  }
}