protected void addExtension(ExtensionWrapper extension)
throws NoSuchExtensionException, ExtensionInitializationException,
ExtensionAlreadyLoadedException, DuplicateExtensionException {
if (extension == null || extension.getExtension() == null) {
throw new IllegalArgumentException("Extension cannot be null");
}
if (has(extension.getName())) {
throw new DuplicateExtensionException(extension.getName());
}
@SuppressWarnings("unchecked")
final ProxiedExtensionWrapper wrapper = new ProxiedExtensionWrapper(extension);
if (extension.getExtension() instanceof PerpetualExtension) {
wrapper.setOnBeforeUnload(
new ExtensionWrapperEventCallback() {
@Override
public <E> void execute(ExtensionWrapper<E> wrapper) {
throw new IllegalStateException("Extension cannot be unloaded: " + wrapper.getName());
}
});
}
console.debug("Extension found: " + extension.getName());
extensions.put(extension.getName(), wrapper);
if (extension.getExtension() instanceof AutoLoadedExtension) {
console.debug("Extension auto-loaded: " + extension.getName());
load(extension.getName());
}
}
@Override
public void execute(String command)
throws InvalidCommandException, AmbiguousCommandException, ConsoleCommandExecutionException {
command = command.trim();
String target = "";
if (command.matches("\\S+:.*")) {
target = command.substring(0, command.indexOf(":"));
command = command.substring(command.indexOf(":") + 1).trim();
for (ProxiedExtensionWrapper wrapper : extensions.values()) {
if (wrapper.getNamespace().equals(target)) {
wrapper.execute(command);
target = "";
break;
}
}
if (!target.isEmpty()) {
throw new IllegalStateException("No such namespace: " + target);
}
return;
}
final Set<ExtensionWrapper> namespaces = new HashSet<ExtensionWrapper>();
for (String name : loaded) {
ProxiedExtensionWrapper wrapper = extensions.get(name);
if (wrapper.knows(command)) {
namespaces.add(wrapper);
}
}
if (namespaces.isEmpty()) {
throw new InvalidCommandException("Invalid command: " + command);
}
if (namespaces.size() == 1) {
final ExtensionWrapper wrapper = namespaces.iterator().next();
wrapper.execute(command);
return;
}
final String[] strings = new String[namespaces.size()];
int i = 0;
for (ExtensionWrapper namespace : namespaces) {
strings[i++] = namespace.getNamespace();
}
throw new AmbiguousCommandException(command, strings);
}