/*! \file pitransparentdevice.h
 * \ingroup IO
 * \~\brief
 * \~english PIIODevice that pass write to read
 * \~russian PIIODevice который транслирует запись на чтение
 */
/*
    PIP - Platform Independent Primitives
    PIIODevice that pass write to read
    Ivan Pelipenko peri4ko@yandex.ru

    This program 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 3 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef PITRANSPARENTDEVICE_H
#define PITRANSPARENTDEVICE_H

#include "piiodevice.h"


//! \~\ingroup IO
//! \~\brief
//! \~english %PIIODevice that returns written packets through \a read().
//! \~russian %PIIODevice, который возвращает записанные пакеты через \a read().
class PIP_EXPORT PITransparentDevice: public PIIODevice {
	PIIODEVICE(PITransparentDevice, "tr");

public:
	//! \~english Constructs an empty %PITransparentDevice.
	//! \~russian Создает пустой %PITransparentDevice.
	explicit PITransparentDevice();

	//! \~english Destroys the transparent device.
	//! \~russian Уничтожает прозрачное устройство.
	virtual ~PITransparentDevice();

	//! \~english Returns size of the next queued packet.
	//! \~russian Возвращает размер следующего пакета в очереди.
	ssize_t bytesAvailable() const override;

protected:
	bool openDevice() override;
	bool closeDevice() override;
	ssize_t readDevice(void * read_to, ssize_t max_size) override;
	ssize_t writeDevice(const void * data, ssize_t max_size) override;
	DeviceInfoFlags deviceInfoFlags() const override { return PIIODevice::Reliable; }

	mutable PIMutex que_mutex;
	PIQueue<PIByteArray> que;
};

#endif // PITRANSPARENTDEVICE_H