fix: sanitize name space util for bec connector and ads

bec_widgets/utils/bec_connector.py

@@ -16,6 +16,7 @@ from qtpy.QtWidgets import QApplication
 
 from bec_widgets.cli.rpc.rpc_register import RPCRegister
 from bec_widgets.utils.error_popups import ErrorPopupUtility, SafeSlot
+from bec_widgets.utils.name_utils import sanitize_namespace
 from bec_widgets.utils.widget_io import WidgetHierarchy
 from bec_widgets.utils.yaml_dialog import load_yaml, load_yaml_gui, save_yaml, save_yaml_gui
 
@@ -102,6 +103,8 @@ class BECConnector:
         """
         # Extract object_name from kwargs to not pass it to Qt class
         object_name = object_name or kwargs.pop("objectName", None)
+        if object_name is not None:
+            object_name = sanitize_namespace(object_name)
         # Ensure the parent is always the first argument for QObject
         parent = kwargs.pop("parent", None)
         # This initializes the QObject or any qt related class BECConnector has to be used from this line down with QObject, otherwise hierarchy logic will not work

bec_widgets/utils/name_utils.py

@@ -14,3 +14,22 @@ def pascal_to_snake(name: str) -> str:
     s1 = re.sub(r"([a-z0-9])([A-Z])", r"\1_\2", name)
     s2 = re.sub(r"([A-Z]+)([A-Z][a-z])", r"\1_\2", s1)
     return s2.lower()
+
+
+def sanitize_namespace(namespace: str | None) -> str | None:
+    """
+    Clean user-provided namespace labels for filesystem compatibility.
+
+    Args:
+        namespace (str | None): Arbitrary namespace identifier supplied by the caller.
+
+    Returns:
+        str | None: Sanitized namespace containing only safe characters, or ``None``
+            when the input is empty.
+    """
+    if not namespace:
+        return None
+    ns = namespace.strip()
+    if not ns:
+        return None
+    return re.sub(r"[^0-9A-Za-z._-]+", "_", ns)