/**
* Override this method to create you own classes on the fly. The name contains the special token
* $$BCEL$$. Everything before that token is consddered to be a package name. You can encode you
* own arguments into the subsequent string. You must regard however not to use any "illegal"
* characters, i.e., characters that may not appear in a Java class name too<br>
* The default implementation interprets the string as a encoded compressed Java class, unpacks
* and decodes it with the Utility.decode() method, and parses the resulting byte array and
* returns the resulting JavaClass object.
*
* @param class_name compressed byte code with "$$BCEL$$" in it
*/
protected JavaClass createClass(String class_name) {
int index = class_name.indexOf("$$BCEL$$");
String real_name = class_name.substring(index + 8);
JavaClass clazz = null;
try {
byte[] bytes = Utility.decode(real_name, true);
ClassParser parser = new ClassParser(new ByteArrayInputStream(bytes), "foo");
clazz = parser.parse();
} catch (Throwable e) {
e.printStackTrace();
return null;
}
// Adapt the class name to the passed value
ConstantPool cp = clazz.getConstantPool();
ConstantClass cl =
(ConstantClass) cp.getConstant(clazz.getClassNameIndex(), Constants.CONSTANT_Class);
ConstantUtf8 name = (ConstantUtf8) cp.getConstant(cl.getNameIndex(), Constants.CONSTANT_Utf8);
name.setBytes(class_name.replace('.', '/'));
return clazz;
}
private DbJVPackage importJarFile(
File jarFile,
DbJVPackage topMostPackage,
Controller controller,
int startJobDone,
int endJobDone)
throws DbException {
DbJVClass dbClass;
String filename = jarFile.getName();
try {
ZipFile zip = new ZipFile(jarFile);
int i = 0, nb = zip.size();
int span = endJobDone - startJobDone;
for (Enumeration<?> e = zip.entries(); e.hasMoreElements(); ) {
int jobDone = startJobDone + (i * span) / nb;
ZipEntry entry = (ZipEntry) e.nextElement();
String entryName = entry.getName();
int idx = entryName.lastIndexOf('.');
String ext = (idx == -1) ? null : entryName.substring(idx + 1);
if ("class".equals(ext)) {
InputStream is = zip.getInputStream(entry);
ClassParser parser = new ClassParser(is, filename);
JavaClass claz = parser.parse();
dbClass = importClass(claz, controller);
if (dbClass != null) {
DbJVPackage pack = (DbJVPackage) dbClass.getCompositeOfType(DbJVPackage.metaClass);
topMostPackage = findTopMostPackage(topMostPackage, pack);
addToImportedPackage(pack);
} // end if
} // end if
// check job done
controller.checkPoint(jobDone);
i++;
// stop to reverse engineer if user has cancelled
boolean finished = controller.isFinalState();
if (finished) {
break;
}
} // end for
zip.close();
} catch (IOException ex) {
controller.println(ex.toString());
dbClass = null;
}
return topMostPackage;
} // end importClassFile()
private DbJVClass importClassFile(String filename, Controller controller) throws DbException {
DbJVClass dbClass;
try {
ClassParser parser = new ClassParser(filename);
JavaClass claz = parser.parse();
dbClass = importClass(claz, controller);
} catch (IOException ex) {
controller.println(ex.toString());
dbClass = null;
}
return dbClass;
} // end importClassFile()
