+Device *Hub::find_subdevice(DeviceType t, unsigned n)
+{
+ for(vector<Device *>::const_iterator i=devices.begin(); i!=devices.end(); ++i)
+ if(Device *dev = (*i)->find_subdevice(t, 0))
+ {
+ if(!n)
+ return dev;
+ --n;
+ }
+ return 0;
+}
+
+Device *Hub::find_subdevice(const string &n)
+{
+ if(n==name)
+ return this;
+ for(vector<Device *>::const_iterator i=devices.begin(); i!=devices.end(); ++i)
+ if(Device *dev = (*i)->find_subdevice(n))
+ return dev;
+ return 0;
+}
+