Mega Code Archive
Wraps a stream, printing to standard out everything that is written to it
<![CDATA[
/*
* LoggingWriter.java Created Sep 7, 2010 by Andrew Butler, PSL
*/
//package prisms.util;
import java.io.Writer;
/** Wraps a stream, printing to standard out everything that is written to it. */
public class LoggingWriter extends Writer {
private java.io.Writer theBase;
private java.io.Writer theLog;
/**
* @param base
* The writer to wrap
* @param logFile
* The name of the file to write to
* @throws java.io.IOException
* If the file cannot be written to
*/
public LoggingWriter(java.io.Writer base, String logFile)
throws java.io.IOException {
theBase = base;
if (logFile != null)
theLog = new java.io.BufferedWriter(new java.io.FileWriter(logFile));
}
/**
* @return The writer wrapped by this logging writer
*/
public java.io.Writer getBase() {
return theBase;
}
@Override
public void write(char[] cbuf, int off, int len) throws java.io.IOException {
theBase.write(cbuf, off, len);
if (theLog != null)
theLog.write(cbuf, off, len);
else
System.out.print(new String(cbuf, off, len));
}
@Override
public void flush() throws java.io.IOException {
theBase.flush();
if (theLog != null)
theLog.flush();
else
System.out.flush();
}
@Override
public void close() throws java.io.IOException {
theBase.close();
if (theLog != null)
theLog.close();
else
System.out.println();
}
}
]]>