/*
* Freeplane - mind map editor
* Copyright (C) 2008 Joerg Mueller, Daniel Polansky, Christian Foltin, Dimitry Polivaev
*
* 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, see <http://www.gnu.org/licenses/>.
*/
package org.freeplane.core.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* An OutputStream that writes contents to a Logger upon each call to flush()
* See http://blogs.sun.com/nickstephen/entry/java_redirecting_system_out_and
*/
class LoggingOutputStream extends ByteArrayOutputStream {
final private Level level;
final private String lineSeparator;
final private Logger logger;
/**
* Constructor
*
* @param logger
* Logger to write to
* @param level
* Level at which to write the log message
*/
public LoggingOutputStream(final Logger logger, final Level level) {
super();
this.logger = logger;
this.level = level;
lineSeparator = System.getProperty("line.separator");
}
/**
* upon flush() write the existing contents of the OutputStream to the
* logger as a log record.
*
* @throws java.io.IOException
* in case of error
*/
@Override
public void flush() throws IOException {
String record;
synchronized (this) {
super.flush();
record = this.toString();
super.reset();
}
if (record.length() == 0 || record.equals(lineSeparator)) {
return;
}
logger.logp(level, "", "", record);
}
}