doomerrors.h

/*
** doomerrors.h
** Contains error classes that can be thrown around
**
**---------------------------------------------------------------------------
** Copyright 1998-2006 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/

#ifndef __ERRORS_H__
#define __ERRORS_H__

#include <string.h>
#include <stdio.h>

#define MAX_ERRORTEXT	1024

class CDoomError
{
public:
	CDoomError ()
	{
		m_Message[0] = '\0';
	}
	CDoomError (const char *message)
	{
		SetMessage (message);
	}
	void SetMessage (const char *message)
	{
		strncpy (m_Message, message, MAX_ERRORTEXT-1);
		m_Message[MAX_ERRORTEXT-1] = '\0';
	}
	void AppendMessage(const char *message)
	{
		size_t len = strlen(m_Message);
		strncpy(m_Message + len, message, MAX_ERRORTEXT - 1 - len);
		m_Message[MAX_ERRORTEXT - 1] = '\0';
	}
	const char *GetMessage (void) const
	{
		if (m_Message[0] != '\0')
			return (const char *)m_Message;
		else
			return NULL;
	}

protected:
	char m_Message[MAX_ERRORTEXT];
};

class CNoRunExit : public CDoomError
{
};

class CRecoverableError : public CDoomError
{
public:
	CRecoverableError() : CDoomError() {}
	CRecoverableError(const char *message) : CDoomError(message) {}
};

class CFatalError : public CDoomError
{
public:
	CFatalError() : CDoomError() {}
	CFatalError(const char *message) : CDoomError(message) {}
};

#endif //__ERRORS_H__