//
// Copyright (C) 2001-2004 Graeme Walker <graeme_walker@users.sourceforge.net>
//
// This program 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 2 of the License, or (at your option) any later
// version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ===
//
// gexception.cpp
//

#include "gdef.h"
#include "gexception.h"

G::Exception::Exception()
{
}

G::Exception::Exception( const char * what ) :
	m_what(what?what:"")
{
}

G::Exception::Exception( const std::string & what ) :
	m_what(what)
{
}

G::Exception::~Exception() throw()
{
}

const char * G::Exception::what() const throw()
{
	return m_what.c_str() ;
}

void G::Exception::append( const char * more )
{
	if( more != NULL && *more != '\0' )
	{
		m_what += ": " ;
		m_what += more ;
	}
}

void G::Exception::append( const std::string & more )
{
	m_what += ": " ;
	m_what += more ;
}


void G::Exception::append( std::ostream & stream )
{
	std::stringstream * ss = dynamic_cast<std::stringstream*>(&stream) ;
	if( ss != NULL )
	{
		append( ss->str() ) ;
	}
}

void G::Exception::prepend( const char * context )
{
	if( context != NULL && *context != '\0' )
	{
		m_what = std::string(context) + ": " + m_what ;
	}
}