exception.cpp

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/*
---------------------------------------------------------------------------
 
    This file is part of uHAL.
 
    uHAL is a hardware access library and programming framework
    originally developed for upgrades of the Level-1 trigger of the CMS
    experiment at CERN.
 
    uHAL is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    uHAL 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with uHAL.  If not, see <http://www.gnu.org/licenses/>.
 
 
      Andrew Rose, Imperial College, London
      email: awr01 <AT> imperial.ac.uk
 
      Marc Magrans de Abril, CERN
      email: marc.magrans.de.abril <AT> cern.ch
 
---------------------------------------------------------------------------
*/
 
#include "uhal/log/exception.hpp"
 
 
#include <cstring>
#include <iostream>
#include <sstream>
#include <stdlib.h>
 
 
namespace uhal
{
  namespace exception
  {
 
    exception::exception ( ) :
      std::exception (),
      mString ( ( char* ) malloc ( 65536 ) )
    {
      gettimeofday ( &mTime, NULL );
      mString[0] = '\0'; //malloc is not required to initialize to null, so do it manually, just in case
    }
 
 
    exception::exception ( const exception& aExc ) :
      std::exception (),
      mTime ( aExc.mTime ),
      mString ( ( char* ) malloc ( 65536 ) )
    {
      strcpy ( mString , aExc.mString );
    }
 
    exception& exception::operator= ( const exception& aExc )
    {
      strcpy ( mString , aExc.mString );
      mTime = aExc.mTime;
      return *this;
    }
 
    exception::~exception() throw()
    {
      if ( mString )
      {
        free ( mString );
        mString = NULL;
      }
    }
 
 
    const char* exception::what() const throw()
    {
 
      if ( strlen ( mString ) )
      {
        return mString;
      }
      else
      {
        std::stringstream lStr;
        lStr << description() << " (no additional info)";
        std::string lString ( lStr.str() );
        strncpy ( mString , lString.c_str() , 65536 );
        return mString;
      }
    }
 
    void exception::append ( const char* aCStr ) throw()
    {
      strncat ( mString, aCStr , 65536-strlen ( mString ) );
    }
 
  }
}