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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
*
* 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 (at your option)
* 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 proguard.gui;
import proguard.retrace.ReTrace;
import javax.swing.*;
import java.awt.*;
import java.io.*;
/**
* This <code>Runnable</code> runs ReTrace, sending console output to a text
* area and any exceptions to message dialogs.
*
* @see ReTrace
* @author Eric Lafortune
*/
final class ReTraceRunnable implements Runnable
{
private final JTextArea consoleTextArea;
private final boolean verbose;
private final File mappingFile;
private final String stackTrace;
/**
* Creates a new ProGuardRunnable object.
* @param consoleTextArea the text area to send the console output to.
* @param verbose specifies whether the de-obfuscated stack trace
* should be verbose.
* @param mappingFile the mapping file that was written out by ProGuard.
*/
public ReTraceRunnable(JTextArea consoleTextArea,
boolean verbose,
File mappingFile,
String stackTrace)
{
this.consoleTextArea = consoleTextArea;
this.verbose = verbose;
this.mappingFile = mappingFile;
this.stackTrace = stackTrace;
}
// Implementation for Runnable.
public void run()
{
consoleTextArea.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
consoleTextArea.setText("");
// Redirect the stack trace string to the System's in stream, and the
// out and err streams to the console text area.
InputStream oldIn = System.in;
PrintStream oldOut = System.out;
PrintStream oldErr = System.err;
ByteArrayInputStream inputStream =
new ByteArrayInputStream(stackTrace.getBytes());
PrintStream printStream =
new PrintStream(new TextAreaOutputStream(consoleTextArea), true);
System.setIn(inputStream);
System.setOut(printStream);
System.setErr(printStream);
try
{
// Create a new ProGuard object with the GUI's configuration.
ReTrace reTrace = new ReTrace(ReTrace.STACK_TRACE_EXPRESSION,
verbose,
mappingFile);
// Run it.
reTrace.execute();
}
catch (Exception ex)
{
// Print out the exception message.
System.out.println(ex.getMessage());
// Show a dialog as well.
MessageDialogRunnable.showMessageDialog(consoleTextArea,
ex.getMessage(),
msg("errorReTracing"),
JOptionPane.ERROR_MESSAGE);
}
catch (OutOfMemoryError er)
{
// Forget about the ProGuard object as quickly as possible.
System.gc();
// Print out a message suggesting what to do next.
System.out.println(msg("outOfMemory"));
// Show a dialog as well.
MessageDialogRunnable.showMessageDialog(consoleTextArea,
msg("outOfMemory"),
msg("errorReTracing"),
JOptionPane.ERROR_MESSAGE);
}
// Make sure all output has been sent to the console text area.
printStream.flush();
// Restore the old System's in, out, and err streams.
System.setIn(oldIn);
System.setOut(oldOut);
System.setErr(oldErr);
consoleTextArea.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
consoleTextArea.setCaretPosition(0);
// Reset the global static redirection lock.
ProGuardGUI.systemOutRedirected = false;
}
// Small utility methods.
/**
* Returns the message from the GUI resources that corresponds to the given
* key.
*/
private String msg(String messageKey)
{
return GUIResources.getMessage(messageKey);
}
}
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