/***************************************************************************
 *   KSystemLog, a system log viewer tool                                  *
 *   Copyright (C) 2007 by Nicolas Ternisien                               *
 *   nicolas.ternisien@gmail.com                                           *
 *                                                                         *
 *   This program 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 2 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 ***************************************************************************/

#ifndef _PROCESS_OUTPUT_LOG_FILE_READER_H_
#define _PROCESS_OUTPUT_LOG_FILE_READER_H_

#define PROCESS_OUTPUT_UPDATER_INTERVAL 10000

#include <QProcess>

#include "logFile.h"

#include "logFileReader.h"

class QProcess;

class ProcessOutputLogFileReaderPrivate;

class ProcessOutputLogFileReader : public LogFileReader {
	
	Q_OBJECT
	
	public:
		
		ProcessOutputLogFileReader(const LogFile& logFile);
		
		virtual ~ProcessOutputLogFileReader();

		void watchFile(bool enable);
		
		void setPreviousFilePosition(long previousFilePosition);

	private slots:
		void startProcess();
		
		void logFileModified();
		
		void emitProcessOutput(int, QProcess::ExitStatus);
		
	private:
		void init();
		
		void closeProcess();
		
		void emptyBuffer();
		
	protected:
		ProcessOutputLogFileReader(ProcessOutputLogFileReaderPrivate& dd, const LogFile& logFile);

	private:
		Q_DECLARE_PRIVATE(ProcessOutputLogFileReader)
		
};

#endif // _PROCESS_OUTPUT_LOG_FILE_READER_H_
