use single code for struct generation

asyncua/common/structures104.py

@@ -62,11 +62,11 @@ async def new_struct(
     simple way to create a new structure
     return the created data type node and the list of encoding nodes
     """
-    
+
     type_name = server.nodes.base_structure_type
     if is_union:
         type_name = server.nodes.base_union_type
-    
+
     dtype = await create_data_type(type_name, idx, name)
 
     if isinstance(idx, ua.NodeId):
@@ -176,7 +176,7 @@ class {struct_name}{base_class}:
     {struct_name} structure autogenerated from StructureDefinition object
     '''
 
-    data_type = ua.NodeId.from_string("{data_type.to_string()}")
+    data_type = ua.NodeId.from_string('{data_type.to_string()}')
 
 """
 

tests/test_common.py

@@ -1575,3 +1575,18 @@ async def test_alias(opc):
     v.MyStringType = '1234'
     await var.write_value(v)
     val = await var.read_value()
+
+async def test_custom_struct_with_strange_chars(opc):
+    idx = 4
+
+    await new_struct(opc.opc, ua.StringNodeId('Toto"æ', 99), ua.QualifiedName("Siemens", 99), [
+        new_struct_field("MyBool", ua.VariantType.Boolean),
+        new_struct_field("MyUInt32", ua.VariantType.UInt32, array=True),
+    ])
+
+    await opc.opc.load_data_type_definitions()
+    mystruct = ua.Siemens()
+    mystruct.MyUInt32 = [78, 79]
+    var = await opc.opc.nodes.objects.add_variable(idx, "my_siemens_struct", ua.Variant(mystruct, ua.VariantType.ExtensionObject))
+    val = await var.read_value()
+    assert val.MyUInt32 == [78, 79]