Determine the dependencies of the configured root classes.
// we get the root classes and build up a set of
// classes upon which they depend
Hashtable dependencies = new Hashtable();
Hashtable containers = new Hashtable();
Hashtable toAnalyze = new Hashtable();
for (Enumeration e = getRootClasses(); e.hasMoreElements();) {
String classname = (String) e.nextElement();
toAnalyze.put(classname, classname);
}
int count = 0;
int maxCount = isClosureRequired() ? MAX_LOOPS : 1;
Hashtable analyzedDeps = null;
while (toAnalyze.size() != 0 && count++ < maxCount) {
analyzedDeps = new Hashtable();
for (Enumeration e = toAnalyze.keys(); e.hasMoreElements();) {
String classname = (String) e.nextElement();
dependencies.put(classname, classname);
try {
File container = getClassContainer(classname);
if (container == null) {
continue;
}
containers.put(container, container);
ZipFile zipFile = null;
InputStream inStream = null;
try {
if (container.getName().endsWith(".class")) {
inStream = new FileInputStream(container.getPath());
} else {
zipFile = new ZipFile(container.getPath());
String entryName
= classname.replace('.", '/") + ".class";
ZipEntry entry = new ZipEntry(entryName);
inStream
= zipFile.getInputStream(entry);
}
ClassFile classFile = new ClassFile();
classFile.read(inStream);
Vector dependencyList = classFile.getClassRefs();
Enumeration depEnum = dependencyList.elements();
while (depEnum.hasMoreElements()) {
String dependency = (String) depEnum.nextElement();
analyzedDeps.put(dependency, dependency);
}
} finally {
if (inStream != null) {
inStream.close();
}
if (zipFile != null) {
zipFile.close();
}
}
} catch (IOException ioe) {
// ignore
}
}
toAnalyze.clear();
// now recover all the dependencies collected and add to the list.
Enumeration depsEnum = analyzedDeps.elements();
while (depsEnum.hasMoreElements()) {
String className = (String) depsEnum.nextElement();
if (!dependencies.containsKey(className)) {
toAnalyze.put(className, className);
}
}
}
// pick up the last round of dependencies that were determined
Enumeration depsEnum = analyzedDeps.elements();
while (depsEnum.hasMoreElements()) {
String className = (String) depsEnum.nextElement();
dependencies.put(className, className);
}
files.removeAllElements();
for (Enumeration e = containers.keys(); e.hasMoreElements();) {
files.addElement((File) e.nextElement());
}
classes.removeAllElements();
for (Enumeration e = dependencies.keys(); e.hasMoreElements();) {
classes.addElement((String) e.nextElement());
}
