/*******************************************************************************

    Copyright(C) Jonas 'Sortie' Termansen 2012, 2013, 2014.

    This file is part of Sortix.

    Sortix 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 3 of the License, or (at your option) any later
    version.

    Sortix 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
    Sortix. If not, see <http://www.gnu.org/licenses/>.

    linebuffer.h
    Provides a simple queue-like line buffering for terminals.

*******************************************************************************/

#ifndef SORTIX_LINEBUFFER_H
#define SORTIX_LINEBUFFER_H

#include <stddef.h>
#include <stdint.h>

namespace Sortix {

class LineBuffer
{
public:
	LineBuffer();
	~LineBuffer();

public:
	bool Push(uint32_t unicode);
	uint32_t Pop();
	uint32_t Peek() const;
	uint32_t Backspace();
	uint32_t WouldBackspace() const;
	void Commit();
	void Freeze();
	bool CanPop() const;
	bool CanBackspace() const;
	void Flush();

private:
	uint32_t* buffer;
	size_t bufferlength;
	size_t bufferoffset;
	size_t buffercommitted;
	size_t bufferfrozen;
	size_t bufferused;

};

} // namespace Sortix

#endif