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import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.text.*;
import java.awt.*; //for layout managers
import java.awt.event.*; //for action and window events
import java.net.URL;
import java.io.IOException;
import java.io.OutputStreamWriter;
/**
* Creates the debug log file (and window)
*
* @version 0.2 11th Sep 2000
* @author Dr. M.P. Ford (c)2000 Forward Computing and Control Pty. Ltd.
* NSW Australia email fcc@forward.com.au
* You may use this class without restriction.
*/
/**
* This class displays all System.out and System.err text in an JTextPanel
* and saves it to a log file using the specified encodeing
*/
public class Debug extends PrintStream {
private static String logFile = "debug.log";
private static String encoding = "UTF8";
private static boolean DEBUG_WINDOW = true;
// find new line chars for this OS
private static final String newLine = System.getProperty("line.separator","\n");
public static Debug log;
private static JFrame frame;
private static JTextPane textPane;
private static Document doc;
private static OutputStreamWriter writer;
static {
try {
System.out.println("Redirecting all output to file " +logFile +" in "+ encoding +" format");
log = new Debug(new FileOutputStream(logFile));
} catch(IOException ex) {
System.err.println("Could not open Debug file " + logFile);
System.exit(1);
}
}
private Debug(FileOutputStream logFile) {
super(logFile,true); // autoflush
try {
writer = new OutputStreamWriter(logFile,encoding);
} catch (UnsupportedEncodingException ex) {
System.out.println("Invalid encoding");
System.exit(1);
}
System.setErr(this);
System.setOut(this);
if (DEBUG_WINDOW) {
frame = new JFrame("Debug Output");
textPane = createTextPane();
frame.getContentPane().add(new JScrollPane(textPane));
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.pack();
frame.setVisible(true);
}
System.err.println("Debug Log file: " + new Date());
System.err.println("Debug class by Matthew Ford email:matthew.ford@forward.com.au");
System.err.println("(c)2000 Forward Computing and Control Pty. Ltd.");
System.err.println(" NSW, Australia, www.forward.com.au");
System.err.println(" You may use this class without restriction");
System.err.println("---------------------------------------------------------------");
}
private static JTextPane createTextPane() {
JTextPane textPane = new JTextPane();
textPane.setEditable(false);
initStylesForTextPane(textPane);
doc = textPane.getDocument();
textPane.setPreferredSize(new Dimension(500,500));
return textPane;
}
public void print(boolean b) {
this.print(new Boolean(b).toString());
}
public void print(double d) {
this.print(new Double(d).toString());
}
public void print(long l) {
this.print(new Long(l).toString());
}
public void println(boolean b) {
this.print(b);
this.println();
}
public void println(double d) {
this.print(d);
this.println();
}
public void println(long l) {
this.print(l);
this.println();
}
public void print(char c) {
char c_array[] = new char[1];
c_array[0] = c;
this.print(new String(c_array));
}
public void print(char c[]) {
this.print(new String(c));
}
public void println(char c) {
this.print(c);
this.println();
}
public void println(char c[]) {
this.print(c);
this.println();
}
public void println(String x) {
this.print(x);
this.println();
}
public void print(String x) {
// add it the debug frame and also the log file
try {
writer.write(x,0,x.length());
} catch (IOException ex) {
x += ex.getMessage();
}
if (DEBUG_WINDOW) {
try {
doc.insertString(doc.getLength(), x,
textPane.getStyle("regular"));
} catch (BadLocationException ble) {
System.exit(2); // cannot write to System.err here
}
}
}
public void println() {
// start newline in debug frame and also the log file
String x = "\n";
try {
writer.write(newLine,0,newLine.length());
writer.flush();
} catch (IOException ex) {
x += ex.getMessage();
}
if (DEBUG_WINDOW) {
try {
doc.insertString(doc.getLength(), "\n",
textPane.getStyle("regular"));
} catch (BadLocationException ble) {
System.exit(2); // cannot write to System.err here
}
}
}
private static void initStylesForTextPane(JTextPane textPane) {
//Initialize some styles.
Style def = StyleContext.getDefaultStyleContext().
getStyle(StyleContext.DEFAULT_STYLE);
Style regular = textPane.addStyle("regular", def);
StyleConstants.setFontFamily(def, "SansSerif");
}
}
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