public void testCopyStream() throws Exception {
int[] size = {
100,
4096,
8000,
1023,
1024,
1025,
2047,
4096 * 3,
4096 * 6,
4096 * 6 - 1,
4096 * 256 * 3,
4096 * 256 * 6
};
for (int i = 0; i < size.length; i++) {
byte[] data = new byte[size[i]];
for (int j = 0; j < data.length; j++) data[j] = (byte) j;
InputStream ins = new ByteArrayInputStream(data);
ByteArrayOutputStream outs = new ByteArrayOutputStream();
ClassPoolTail.copyStream(ins, outs);
byte[] data2 = outs.toByteArray();
if (data2.length != data.length) throw new Exception("bad size");
for (int k = 0; k < data.length; k++)
if (data[k] != data2[k]) throw new Exception("bad element");
}
}
/**
* Finds the specified class using <code>ClassPath</code>. If the source throws an exception, this
* returns null.
*
* <p>This method can be overridden by a subclass of <code>Loader</code>. Note that the overridden
* method must not throw an exception when it just fails to find a class file.
*
* @return null if the specified class could not be found.
* @throws ClassNotFoundException if an exception is thrown while obtaining a class file.
*/
protected Class findClass(String name) throws ClassNotFoundException {
byte[] classfile;
try {
if (source != null) {
if (translator != null) translator.onLoad(source, name);
try {
classfile = source.get(name).toBytecode();
} catch (NotFoundException e) {
return null;
}
} else {
String jarname = "/" + name.replace('.', '/') + ".class";
InputStream in = this.getClass().getResourceAsStream(jarname);
if (in == null) return null;
classfile = ClassPoolTail.readStream(in);
}
} catch (Exception e) {
throw new ClassNotFoundException(
"caught an exception while obtaining a class file for " + name, e);
}
int i = name.lastIndexOf('.');
if (i != -1) {
String pname = name.substring(0, i);
if (getPackage(pname) == null)
try {
definePackage(pname, null, null, null, null, null, null, null);
} catch (IllegalArgumentException e) {
// ignore. maybe the package object for the same
// name has been created just right away.
}
}
if (domain == null) return defineClass(name, classfile, 0, classfile.length);
else return defineClass(name, classfile, 0, classfile.length, domain);
}