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/*
 * bytestream.h - base class for bytestreams
 * Copyright (C) 2003  Justin Karneges
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifndef CS_BYTESTREAM_H
#define CS_BYTESTREAM_H

#include <tqobject.h>
#include <tqcstring.h>

// CS_NAMESPACE_BEGIN

// CS_EXPORT_BEGIN
class ByteStream : public TQObject
{
	TQ_OBJECT
  
public:
	enum Error { ErrRead, ErrWrite, ErrCustom = 10 };
	ByteStream(TQObject *parent=0);
	virtual ~ByteStream()=0;

	virtual bool isOpen() const;
	virtual void close();
	virtual void write(const TQByteArray &);
	virtual TQByteArray read(int bytes=0);
	virtual int bytesAvailable() const;
	virtual int bytesToWrite() const;

	void write(const TQCString &);

	static void appendArray(TQByteArray *a, const TQByteArray &b);
	static TQByteArray takeArray(TQByteArray *from, int size=0, bool del=true);

signals:
	void connectionClosed();
	void delayedCloseFinished();
	void readyRead();
	void bytesWritten(int);
	void error(int);

protected:
	void clearReadBuffer();
	void clearWriteBuffer();
	void appendRead(const TQByteArray &);
	void appendWrite(const TQByteArray &);
	TQByteArray takeRead(int size=0, bool del=true);
	TQByteArray takeWrite(int size=0, bool del=true);
	TQByteArray & readBuf();
	TQByteArray & writeBuf();
	virtual int tryWrite();

private:
//! \if _hide_doc_
	class Private;
	Private *d;
//! \endif
};
// CS_EXPORT_END

// CS_NAMESPACE_END

#endif