/*********************************************************************
*
* Copyright (C) 2003 Andrew Khan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
package jxl.common.log;
import jxl.common.Logger;
/**
* The default logger. Simple writes everything out to stdout or stderr
*/
public class SimpleLogger extends Logger
{
/**
* Flag to indicate whether or not warnings should be suppressed
*/
private boolean suppressWarnings;
/**
* Constructor
*/
public SimpleLogger()
{
suppressWarnings = false;
}
/**
* Log a debug message
*/
public void debug(Object message)
{
if (!suppressWarnings)
{
System.out.print("Debug: ");
System.out.println(message);
}
}
/**
* Log a debug message and exception
*/
public void debug(Object message, Throwable t)
{
if (!suppressWarnings)
{
System.out.print("Debug: ");
System.out.println(message);
t.printStackTrace();
}
}
/**
* Log an error message
*/
public void error(Object message)
{
System.err.print("Error: ");
System.err.println(message);
}
/**
* Log an error message object and exception
*/
public void error(Object message, Throwable t)
{
System.err.print("Error: ");
System.err.println(message);
t.printStackTrace();
}
/**
* Log a fatal message
*/
public void fatal(Object message)
{
System.err.print("Fatal: ");
System.err.println(message);
}
/**
* Log a fatal message and exception
*/
public void fatal(Object message, Throwable t)
{
System.err.print("Fatal: ");
System.err.println(message);
t.printStackTrace();
}
/**
* Log an information message
*/
public void info(Object message)
{
if (!suppressWarnings)
{
System.out.println(message);
}
}
/**
* Logs an information message and an exception
*/
public void info(Object message, Throwable t)
{
if (!suppressWarnings)
{
System.out.println(message);
t.printStackTrace();
}
}
/**
* Log a warning message object
*/
public void warn(Object message)
{
if (!suppressWarnings)
{
System.err.print("Warning: ");
System.err.println(message);
}
}
/**
* Log a warning message with exception
*/
public void warn(Object message, Throwable t)
{
if (!suppressWarnings)
{
System.err.print("Warning: ");
System.err.println(message);
t.printStackTrace();
}
}
/**
* Accessor to the logger implementation
*/
protected Logger getLoggerImpl(Class c)
{
return this;
}
/**
* Overrides the method in the base class to suppress warnings - it can
* be set using the system property jxl.nowarnings.
* This method was originally present in the WorkbookSettings bean,
* but has been moved to the logger class. This means it is now present
* when the JVM is initialized, and subsequent to change it on
* a Workbook by Workbook basis will prove fruitless
*
* @param w suppression flag
*/
public void setSuppressWarnings(boolean w)
{
suppressWarnings = w;
}
}
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