def _find_combo_match(path): """ Calculate the key to check the MEDIASYNC['JOINED'] dict for, perform the lookup, and return the matching key string if a match is found. If no match is found, return None instead. """ key_str = _form_key_str(path) if not key_str: # _form_key_str() says this isn't even a CSS/JS file. return None if not JOINED.has_key(key_str): # No combo file match found. Must be an single file. return None else: # Combo match found, return the JOINED key. return key_str