ifctester to fail more gracefully meeting invalid .ids file

Previously Bonsai would show a wall of errors, now it's show a simple error message and redirecting to system console for the details.

Example error - https://i.imgur.com/uJJfjUW.png
Example validation error details in console - https://i.imgur.com/3mcVBUh.png

Same details but in text:
Validation error details:

failed validating {'dataType': 'IFCBOOLEAN', 'ursi': 'https://google.com', 'cardinality': 'required', 'instructions': "Make sure it's true"} with XsdAttributeGroup(['dataType', 'uri', 'cardinality', 'instructions']):

Reason: 'ursi' attribute not allowed for element

Schema component:

  <xs:extension xmlns:xs="http://www.w3.org/2001/XMLSchema" base="ids:propertyType">
      <xs:attribute name="uri" type="xs:anyURI" use="optional" />
      <xs:attribute name="cardinality" type="ids:conditionalCardinality" use="optional" default="required" />
      <xs:attribute name="instructions" type="xs:string" use="optional">
          <xs:annotation>
              <xs:documentation>Author of the IDS can leave instructions for the authors of the IFC. This text could/should be displayed in the BIM/IFC authoring tool.</xs:documentation>
          </xs:annotation>
      </xs:attribute>
  </xs:extension>

Instance type: <class 'xml.etree.ElementTree.Element'>

Instance:

  <ids:property xmlns:ids="http://standards.buildingsmart.org/IDS" dataType="IFCBOOLEAN" ursi="https://google.com" cardinality="required" instructions="Make sure it's true">
    <ids:propertySet>
      <ids:simpleValue>Pset_WallCommon</ids:simpleValue>
    </ids:propertySet>
    <ids:baseName>
      <ids:simpleValue>Combustible</ids:simpleValue>
    </ids:baseName>
    <ids:value>
      <ids:simpleValue>false</ids:simpleValue>
    </ids:value>
  </ids:property>

Path: /ids:ids/ids:specifications/ids:specification/ids:requirements/ids:property[1]

src/bonsai/bonsai/bim/module/tester/operator.py

@@ -21,6 +21,7 @@ import bpy
 import time
 import tempfile
 import webbrowser
+import traceback
 import ifctester
 import ifctester.ids
 import ifctester.reporter
@@ -72,7 +73,19 @@ class ExecuteIfcTester(bpy.types.Operator, tool.Ifc.Operator):
             start = time.time()
             output = Path(os.path.join(dirpath, "{}_{}.html".format(ifc_path, os.path.basename(specs_path))))
 
-            specs = ifctester.ids.open(specs_path)
+            try:
+                specs = ifctester.ids.open(specs_path)
+            except ifctester.ids.IdsXmlValidationError as e:
+                traceback.print_exc()
+                YELLOW = "\033[93m"
+                RESET = "\033[0m"
+                print("------------------\n" * 3)
+                print(f"{YELLOW}Validation error details:\n\n{str(e.xml_error)}{RESET}")
+                print("------------------\n" * 3)
+                self.report(
+                    {"ERROR"}, "Provided IDS file appears to be invalid. Open system console to see the details."
+                )
+                return {"CANCELLED"}
             print("Finished loading:", time.time() - start)
             start = time.time()
             specs.validate(ifc_data, filepath=ifc_path)

src/ifctester/ifctester/ids.py

@@ -20,6 +20,7 @@ from __future__ import annotations
 import os
 import datetime
 import ifcopenshell
+from xmlschema.validators.exceptions import XMLSchemaValidationError
 from xmlschema import XMLSchema
 from xmlschema import etree_tostring
 from xml.etree import ElementTree as ET
@@ -43,16 +44,26 @@ cwd = os.path.dirname(os.path.realpath(__file__))
 schema = None
 
 
+class IdsXmlValidationError(Exception):
+    def __init__(self, xml_error: XMLSchemaValidationError, message: str):
+        self.xml_error = xml_error
+        super().__init__(message)
+
+
 @overload
 def open(filepath: str, validate: Literal[False] = False) -> Ids: ...
 @overload
 def open(filepath: str, validate: Literal[True]) -> None: ...
 def open(filepath: str, validate=False) -> Union[Ids, None]:
-    if validate:
+    try:
-        get_schema().validate(filepath)
+        if validate:
-    return Ids().parse(
+            get_schema().validate(filepath)
-        get_schema().decode(filepath, strip_namespaces=True, namespaces={"": "http://standards.buildingsmart.org/IDS"})
+        decode = get_schema().decode(
-    )
+            filepath, strip_namespaces=True, namespaces={"": "http://standards.buildingsmart.org/IDS"}
+        )
+    except XMLSchemaValidationError as e:
+        raise IdsXmlValidationError(e, f"Provided .ids file ({filepath}) appears to be invalid. See details above.")
+    return Ids().parse(decode)
 
 
 def get_schema():