/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.tools.log;
import java.io.IOException;
import java.io.OutputStream;
/**
* Filters according to the given filter before the characters are given to the parent stream.
*
* @author Ingo Mierswa
* @version $Id: FormattedFilterStream.java,v 1.3 2008/05/09 19:23:25 ingomierswa Exp $
*/
public class FormattedFilterStream extends OutputStream {
private OutputStream out;
private LogFormatFilter filter;
private int lastChar = -1;
public FormattedFilterStream(OutputStream out, LogFormatFilter filter) {
this.out = out;
this.filter = filter;
}
public void write(int b) throws IOException {
if (filter.accept(lastChar, b))
out.write(b);
lastChar = b;
}
public void close() throws IOException {
if ((!System.out.equals(out)) && (!System.err.equals(out)))
out.close();
}
public void flush() throws IOException {
out.flush();
}
}