/*
* Copyright 2006 - 2013
* Stefan Balev <stefan.balev@graphstream-project.org>
* Julien Baudry <julien.baudry@graphstream-project.org>
* Antoine Dutot <antoine.dutot@graphstream-project.org>
* Yoann Pigné <yoann.pigne@graphstream-project.org>
* Guilhelm Savin <guilhelm.savin@graphstream-project.org>
*
* This file is part of GraphStream <http://graphstream-project.org>.
*
* GraphStream is a library whose purpose is to handle static or dynamic
* graph, create them from scratch, file or any source and display them.
*
* This program is free software distributed under the terms of two licenses, the
* CeCILL-C license that fits European law, and the GNU Lesser General Public
* License. You can use, modify and/ or redistribute the software under the terms
* of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
* URL <http://www.cecill.info> or under the terms of the GNU LGPL 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/>.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
*/
package org.graphstream.util;
import java.io.IOException;
import org.graphstream.stream.SinkAdapter;
import org.graphstream.stream.file.FileSource;
import org.graphstream.stream.file.FileSourceFactory;
/**
* Count the step of a stream.
*/
public class StepCounter extends SinkAdapter {
/**
* Count step contains in a file.
*
* @param path
* path to the file
* @return count of step event in the file
* @throws IOException
* @see org.graphstream.stream.file.FileSourceFactory
*/
public static int countStepInFile(String path) throws IOException {
StepCounter counter = new StepCounter();
FileSource source = FileSourceFactory.sourceFor(path);
source.addElementSink(counter);
source.readAll(path);
return counter.getStepCount();
}
protected int step;
/**
* Default constructor. Count is set to zero.
*/
public StepCounter() {
reset();
}
/**
* Reset the step count to zero.
*/
public void reset() {
step = 0;
}
/**
* Get the step count.
*
* @return the count of step
*/
public int getStepCount() {
return step;
}
/*
* (non-Javadoc)
*
* @see org.graphstream.stream.SinkAdapter#stepBegins(java.lang.String,
* long, double)
*/
public void stepBegins(String sourceId, long timeId, double time) {
step++;
}
}