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/*
* Copyright (C) 2007-2008 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "exceptionbase.h"
#include <stdarg.h>
Bu::ExceptionBase::ExceptionBase( const char *lpFormat, ... ) throw() :
nErrorCode( 0 ),
sWhat( NULL )
#ifdef LIBBU_EXCEPTION_BACKTRACE
, sBT( NULL )
#endif
{
va_list ap;
va_start(ap, lpFormat);
setWhat( lpFormat, ap );
va_end(ap);
#ifdef LIBBU_EXCEPTION_BACKTRACE
createBacktrace();
#endif
}
Bu::ExceptionBase::ExceptionBase( int nCode, const char *lpFormat, ... ) throw() :
nErrorCode( nCode ),
sWhat( NULL )
#ifdef LIBBU_EXCEPTION_BACKTRACE
, sBT( NULL )
#endif
{
va_list ap;
va_start(ap, lpFormat);
setWhat( lpFormat, ap );
va_end(ap);
#ifdef LIBBU_EXCEPTION_BACKTRACE
createBacktrace();
#endif
}
Bu::ExceptionBase::ExceptionBase( int nCode ) throw() :
nErrorCode( nCode ),
sWhat( NULL )
#ifdef LIBBU_EXCEPTION_BACKTRACE
, sBT( NULL )
#endif
{
#ifdef LIBBU_EXCEPTION_BACKTRACE
createBacktrace();
#endif
}
Bu::ExceptionBase::ExceptionBase( const ExceptionBase &e ) throw () :
nErrorCode( e.nErrorCode ),
sWhat( NULL )
#ifdef LIBBU_EXCEPTION_BACKTRACE
, sBT( NULL )
#endif
{
setWhat( e.sWhat );
#ifdef LIBBU_EXCEPTION_BACKTRACE
createBacktrace();
#endif
}
Bu::ExceptionBase::~ExceptionBase() throw()
{
delete[] sWhat;
sWhat = NULL;
#ifdef LIBBU_EXCEPTION_BACKTRACE
delete[] sBT;
sBT = NULL;
#endif
}
void Bu::ExceptionBase::setWhat( const char *lpFormat, va_list &vargs )
{
if( sWhat ) delete[] sWhat;
int nSize;
nSize = vsnprintf( NULL, 0, lpFormat, vargs );
sWhat = new char[nSize+1];
vsnprintf( sWhat, nSize+1, lpFormat, vargs );
}
void Bu::ExceptionBase::setWhat( const char *lpText )
{
if( sWhat ) delete[] sWhat;
int nSize;
nSize = strlen( lpText );
sWhat = new char[nSize+1];
strcpy( sWhat, lpText );
}
const char *Bu::ExceptionBase::what() const throw()
{
return sWhat;
}
int Bu::ExceptionBase::getErrorCode()
{
return nErrorCode;
}
#ifdef LIBBU_EXCEPTION_BACKTRACE
const char *Bu::ExceptionBase::getBacktrace() const throw()
{
return sBT;
}
#include "bu/fstring.h"
#include <execinfo.h>
void Bu::ExceptionBase::createBacktrace()
{
void *array[1000];
size_t size;
char **strings;
size_t i;
size = backtrace (array, 1000);
strings = backtrace_symbols (array, size);
Bu::FString s;
s.format("Obtained %zd stack frames.\n", size );
for (i = 0; i < size; i++)
{
s += strings[i];
s += "\n";
}
free (strings);
sBT = new char[s.getSize()+1];
strcpy( sBT, s.getStr() );
}
#else
const char *Bu::ExceptionBase::getBacktrace() const throw()
{
return "Backtrace support is not compiled in.\n";
}
#endif
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