RetroShare/libretroshare/src/pqi/pqibin.h

/*
 * "$Id: pqibin.h,v 1.2 2007-02-18 21:46:49 rmf24 Exp $"
 *
 * 3P/PQI network interface for RetroShare.
 *
 * Copyright 2004-2006 by Robert Fernie.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License Version 2 as published by the Free Software Foundation.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 *
 * Please report all bugs and problems to "retroshare@lunamutt.com".
 *
 */



#ifndef PQI_BIN_INTERFACE_HEADER
#define PQI_BIN_INTERFACE_HEADER

#include "pqi/pqi_base.h"

class BinFileInterface: public BinInterface
{
public:
	BinFileInterface(char *fname, int flags);
virtual ~BinFileInterface();

virtual int     tick() { return 1; }

virtual int	senddata(void *data, int len);
virtual int	readdata(void *data, int len);
virtual int	netstatus() { return 1;}
virtual int	isactive()  { return (buf != NULL);}
virtual bool	moretoread() 
	{ 
		if ((buf) && (bin_flags | BIN_FLAGS_READABLE))
		{
			if ((size - ftell(buf)) > 0)
			{
				return true;
			}
		}
		return false;
	}


virtual bool 	cansend() { return (bin_flags | BIN_FLAGS_WRITEABLE);   }

private:
	int   bin_flags;
	FILE *buf;
	int   size;
};


class BinMemInterface: public BinInterface
{
public:
	BinMemInterface(int defsize, int flags);
virtual ~BinMemInterface();

int	fseek(int loc);
int	memsize() { return recvsize; }
void   *memptr() { return buf; }

virtual int     tick() { return 1; }

virtual int	senddata(void *data, int len);
virtual int	readdata(void *data, int len);
virtual int	netstatus() { return 1; }
virtual int	isactive()  { return 1; }
virtual bool	moretoread() 
	{ 
		if ((buf) && (bin_flags | BIN_FLAGS_READABLE ))
		{
			if (readloc < recvsize)
			{
				return true;
			}
		}
		return false;
	}

virtual bool 	cansend()    { return (bin_flags | BIN_FLAGS_WRITEABLE); }

	private:
	int   bin_flags;
	void *buf;
	int   size;
	int   recvsize;
	int   readloc;
};



#endif // PQI_BINARY_INTERFACES_HEADER