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/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2000 Michael Powers
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, see http://www.gnu.org
*/
package net.wotonomy.ui.swing.util;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Hashtable;
/**
* ClassGrabber is a class loader used by WindowGrabber. It simply loads classes
* by filename and nothing more. It exists mainly because the java 1.1 class
* loading framework doesn't easily allow the creation of class loaders nor the
* loading of arbitrary classes.
*
* @author michael@mpowers.net
* @version $Revision: 904 $ $Date: 2006-02-18 18:19:05 -0500 (Sat, 18 Feb 2006)
* $
*/
public class ClassGrabber extends ClassLoader {
Hashtable classMap = new Hashtable();
public ClassGrabber() {
super();
}
protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
Class c = (Class) classMap.get(name);
if (c != null)
return c;
try {
c = findSystemClass(name);
} catch (Exception exc1) {
// System.err.print( "findSystemClass: " + name + ": " );
// System.err.println( exc1 );
}
if (c != null)
return c;
try {
c = findLoadedClass(name);
} catch (Exception exc1) {
// System.err.print( "findLoadedClass: " + name + ": " );
// System.err.println( exc1 );
}
if (c != null)
return c;
try {
InputStream input = new BufferedInputStream(new FileInputStream(name));
ByteArrayOutputStream output = new ByteArrayOutputStream(200);
int ch;
while ((ch = input.read()) != -1) {
output.write(ch);
}
byte[] data = output.toByteArray();
c = defineClass(null, data, 0, data.length);
} catch (Exception exc) {
System.err.print("getResource: " + name + ": ");
System.err.println(exc);
c = null;
}
if (c != null) {
classMap.put(name, c);
if (resolve)
resolveClass(c);
}
return c;
}
}
/*
* $Log$ Revision 1.2 2006/02/18 23:19:05 cgruber Update imports and maven
* dependencies.
*
* Revision 1.1 2006/02/16 13:22:22 cgruber Check in all sources in
* eclipse-friendly maven-enabled packages.
*
* Revision 1.2 2003/08/06 23:07:53 chochos general code cleanup (mostly,
* removing unused imports)
*
* Revision 1.1.1.1 2000/12/21 15:51:18 mpowers Contributing wotonomy.
*
* Revision 1.2 2000/12/20 16:25:45 michael Added log to all files.
*
*
*/
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