protected DBusInterface dynamicProxy()

in dbus-java/src/main/java/org/freedesktop/dbus/connections/impl/DBusConnection.java [358:416]
52 lines of code
11 McCabe index (conditional complexity)

    protected DBusInterface dynamicProxy(String _source, String _path) throws DBusException {
        logger.debug("Introspecting {} on {} for dynamic proxy creation", _path, _source);
        try {
            Introspectable intro = getRemoteObject(_source, _path, Introspectable.class);
            String data = intro.Introspect();
            logger.trace("Got introspection data: {}", data);

            String[] tags = data.split("[<>]");
            List<String> ifaces = new ArrayList<>();
            for (String tag : tags) {
                if (tag.startsWith("interface")) {
                    ifaces.add(tag.replaceAll("^interface *name *= *['\"]([^'\"]*)['\"].*$", "$1"));
                }
            }
            List<Class<?>> ifcs = new ArrayList<>();
            for (String iface : ifaces) {
                // if this is a default DBus interface, look for it in our package structure
                if (iface.startsWith("org.freedesktop.DBus.")) {
                    iface = iface.replaceAll("^.*\\.([^\\.]+)$", DBusInterface.class.getPackage().getName() + ".$1");
                }

                logger.debug("Trying interface {}", iface);
                int j = 0;
                while (j >= 0) {
                    try {
                        Class<?> ifclass = Class.forName(iface);
                        if (!ifcs.contains(ifclass)) {
                            ifcs.add(ifclass);
                        }
                        break;
                    } catch (Exception e) {
                    }
                    j = iface.lastIndexOf(".");
                    char[] cs = iface.toCharArray();
                    if (j >= 0) {
                        cs[j] = '$';
                        iface = String.valueOf(cs);
                    }
                }
            }

            // interface could not be found, we guess that this exported object at least support DBusInterface
            if (ifcs.isEmpty()) {
                // throw new DBusException("Could not find an interface to cast to");
                ifcs.add(DBusInterface.class);
            }

            RemoteObject ro = new RemoteObject(_source, _path, null, false);
            DBusInterface newi = (DBusInterface) Proxy.newProxyInstance(ifcs.get(0).getClassLoader(),
                    ifcs.toArray(new Class[0]), new RemoteInvocationHandler(this, ro));
            getImportedObjects().put(newi, ro);
            return newi;
        } catch (Exception e) {
            logger.debug("", e);
            throw new DBusException(
                    String.format("Failed to create proxy object for %s exported by %s. Reason: %s", _path,
                            _source, e.getMessage()));
        }
    }