The version of Apache log4j used by SoundHelix.
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SimpleLogger.java
/*
* Copyright (c) 2004-2005 SLF4J.ORG
* Copyright (c) 2004-2005 QOS.ch
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, and/or sell copies of the Software, and to permit persons
* to whom the Software is furnished to do so, provided that the above
* copyright notice(s) and this permission notice appear in all copies of
* the Software and that both the above copyright notice(s) and this
* permission notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
* OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY
* SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Except as contained in this notice, the name of a copyright holder
* shall not be used in advertising or otherwise to promote the sale, use
* or other dealings in this Software without prior written authorization
* of the copyright holder.
*
*/
package org.slf4j.impl;
import org.slf4j.ULogger;
/**
* A simple implementation that logs messages of level INFO or higher on
* the console (<code>System.out<code>).
* <p>
* The output includes the relative time in milliseconds, thread name, the level,
* logger name, and the message followed by the line separator for the host.
* In log4j terms it amounts to the "%r [%t] %level %logger - %m%n" pattern.
* <pre>
176 [main] INFO examples.Sort - Populating an array of 2 elements in reverse order.
225 [main] INFO examples.SortAlgo - Entered the sort method.
304 [main] INFO SortAlgo.DUMP - Dump of interger array:
317 [main] INFO SortAlgo.DUMP - Element [0] = 0
331 [main] INFO SortAlgo.DUMP - Element [1] = 1
343 [main] INFO examples.Sort - The next log statement should be an error message.
346 [main] ERROR SortAlgo.DUMP - Tried to dump an uninitialized array.
at org.log4j.examples.SortAlgo.dump(SortAlgo.java:58)
at org.log4j.examples.Sort.main(Sort.java:64)
467 [main] INFO examples.Sort - Exiting main method.
</pre>
*
* @author Ceki Gülcü
*/
public class SimpleLogger implements ULogger {
String loggerName;
/**
* Mark the time when this class gets loaded into memory.
*/
static private long startTime = System.currentTimeMillis();
public static final String LINE_SEPARATOR = System.getProperty("line.separator");
static private String INFO_STR = "INFO";
static private String WARN_STR = "WARN";
static private String ERROR_STR = "ERROR";
/**
* Package access allows only {@link SimpleLoggerFA} to instantiate
* SimpleLogger instances.
*/
SimpleLogger(String name) {
this.loggerName = name;
}
/**
* Always returns false.
*/
public boolean isDebugEnabled() {
return false;
}
/**
* A NOP implementation.
*/
public void debug(Object msg) {
// NOP
}
/**
* A NOP implementation.
*/
public void debug(Object parameterizedMsg, Object param1) {
// NOP
}
/**
* A NOP implementation.
*/
public void debug(String parameterizedMsg, Object param1, Object param2) {
// NOP
}
/**
* A NOP implementation.
*/
public void debug(Object msg, Throwable t) {
// NOP
}
/**
* This is our internal implementation for logging regular (non-parameterized)
* log messages.
*
* @param level
* @param message
* @param t
*/
private void log(String level, String message, Throwable t) {
StringBuffer buf = new StringBuffer();
long millis = System.currentTimeMillis();
buf.append(millis-startTime);
buf.append(" [");
buf.append(Thread.currentThread().getName());
buf.append("] ");
buf.append(level);
buf.append(" ");
buf.append(loggerName);
buf.append(" - ");
buf.append(message);
buf.append(LINE_SEPARATOR);
System.out.print(buf.toString());
if(t != null) {
t.printStackTrace(System.out);
}
System.out.flush();
}
/**
* For parameterized messages, first substitute parameters and then log.
*
* @param level
* @param parameterizedMsg
* @param param1
* @param param2
*/
private void parameterizedLog(String level, Object parameterizedMsg, Object param1, Object param2) {
if (parameterizedMsg instanceof String) {
String msgStr = (String) parameterizedMsg;
msgStr = MessageFormatter.format(msgStr, param1, param2);
log(level, msgStr, null);
} else {
// To be failsafe, we handle the case where 'messagePattern' is not
// a String. Unless the user makes a mistake, this should not happen.
log(level, parameterizedMsg.toString(), null);
}
}
/**
* Always returns true.
*/
public boolean isInfoEnabled() {
return true;
}
/**
* A simple implementation which always logs messages of level INFO according
* to the format outlined above.
*/
public void info(Object msg) {
log(INFO_STR, msg.toString(), null);
}
/**
* Perform single parameter substituion before logging the message of level
* INFO according to the format outlined above.
*/
public void info(Object parameterizedMsg, Object param1) {
parameterizedLog(INFO_STR, parameterizedMsg, param1, null);
}
/**
* Perform double parameter substituion before logging the message of level
* INFO according to the format outlined above.
*/
public void info(String parameterizedMsg, Object param1, Object param2) {
parameterizedLog(INFO_STR, parameterizedMsg, param1, param2);
}
/**
* Log a message of level INFO, including an exception.
*/
public void info(Object msg, Throwable t) {
log(INFO_STR, msg.toString(), t);
}
/**
* Always returns true.
*/
public boolean isWarnEnabled() {
return true;
}
/**
* A simple implementation which always logs messages of level WARN according
* to the format outlined above.
*/
public void warn(Object msg) {
log(WARN_STR, msg.toString(), null);
}
/**
* Perform single parameter substituion before logging the message of level
* WARN according to the format outlined above.
*/
public void warn(Object parameterizedMsg, Object param1) {
parameterizedLog(WARN_STR, parameterizedMsg, param1, null);
}
/**
* Perform double parameter substituion before logging the message of level
* WARN according to the format outlined above.
*/
public void warn(String parameterizedMsg, Object param1, Object param2) {
parameterizedLog(WARN_STR, parameterizedMsg, param1, param2);
}
/**
* Log a message of level WARN, including an exception.
*/
public void warn(Object msg, Throwable t) {
log(WARN_STR, msg.toString(), t);
}
/**
* Always returns true.
*/
public boolean isErrorEnabled() {
return true;
}
/**
* A simple implementation which always logs messages of level ERROR acoording
* to the format outlined above.
*/
public void error(Object msg) {
log(ERROR_STR, msg.toString(), null);
}
/**
* Perform single parameter substituion before logging the message of level
* ERROR according to the format outlined above.
*/
public void error(Object parameterizedMsg, Object param1) {
parameterizedLog(ERROR_STR, parameterizedMsg, param1, null);
}
/**
* Perform double parameter substituion before logging the message of level
* ERROR according to the format outlined above.
*/
public void error(String parameterizedMsg, Object param1, Object param2) {
parameterizedLog(ERROR_STR, parameterizedMsg, param1, param2);
}
/**
* Log a message of level ERROR, including an exception.
*/
public void error(Object msg, Throwable t) {
log(ERROR_STR, msg.toString(), t);
}
}