/*
* SystemErrLogger.java
*
* Copyright (C) 2002, 2003, 2004, 2005, 2006 Takis Diakoumis
*
* 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
package ru.jimbot.util;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.SwingUtilities;
/* ----------------------------------------------------------
* CVS NOTE: Changes to the CVS repository prior to the
* release of version 3.0.0beta1 has meant a
* resetting of CVS revision numbers.
* ----------------------------------------------------------
*/
/**
* Output stream for System.err that logs to registered Log4J
* logger instance as well as standard System.err output.
*
* @author Takis Diakoumis, Prolubnikov Dmitry
* @version $Revision: 1.1 $
* @date $Date: 2006/12/15 17:34:39 $
*/
public class SystemErrLogger extends OutputStream {
/** string buffer for text concat */
private StringBuffer buf;
/** matcher to remove new lines from log messages */
private Matcher newLineMatcher;
/** the System.err print stream */
private PrintStream systemErr;
/** Creates a new instance of SystemErrLogger */
public SystemErrLogger() {
systemErr = System.err;
buf = new StringBuffer();
newLineMatcher = Pattern.compile("[\n\r]+").matcher("");
}
private void log(final String s) {
Runnable update = new Runnable() {
public void run() {
newLineMatcher.reset(s);
if (s.length() == 1 && newLineMatcher.find()) {
return;
}
String text = newLineMatcher.replaceAll(" ");
Log.error(text);
}
};
SwingUtilities.invokeLater(update);
}
public synchronized void write(int b) {
systemErr.write(b);
b &= 0x000000FF;
char c = (char)b;
buf.append(String.valueOf(c));
}
public synchronized void write(byte[] b, int offset, int length) {
systemErr.write(b, offset, length);
buf.append(new String(b, offset, length));
}
public synchronized void write(byte[] b) {
try {
systemErr.write(b);
} catch (IOException e) {}
buf.append(new String(b));
}
public synchronized void flush() {
systemErr.flush();
synchronized (buf) {
if (buf.length() > 0) {
log(buf.toString());
buf.setLength(0);
}
}
}
}
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