Support for importing IFCZIP files. See #834

src/ifcblenderexport/blenderbim/bim/import_ifc.py

@@ -7,6 +7,9 @@ import time
 import mathutils
 import math
 import multiprocessing
+import zipfile
+import tempfile
+from pathlib import Path
 from .helper import SIUnitHelper
 from . import schema
 from . import ifc
@@ -589,7 +592,16 @@ class IfcImporter():
 
     def load_file(self):
         self.ifc_import_settings.logger.info('loading file {}'.format(self.ifc_import_settings.input_file))
-        self.file = ifcopenshell.open(self.ifc_import_settings.input_file)
+        extension = self.ifc_import_settings.input_file.split('.')[-1]
+        if extension == 'ifczip':
+            with tempfile.TemporaryDirectory() as unzipped_path:
+                with zipfile.ZipFile(self.ifc_import_settings.input_file, 'r') as zip_ref:
+                    zip_ref.extractall(unzipped_path)
+                for filename in Path(unzipped_path).glob('**/*.ifc'):
+                    self.file = ifcopenshell.open(filename)
+                    break
+        elif extension == 'ifc':
+            self.file = ifcopenshell.open(self.ifc_import_settings.input_file)
         ifc.IfcStore.file = self.file
 
     def set_ifc_file(self):

src/ifcblenderexport/blenderbim/bim/operator.py

@@ -64,9 +64,8 @@ class ExportIFC(bpy.types.Operator):
 class ImportIFC(bpy.types.Operator, ImportHelper):
     bl_idname = "import.ifc"
     bl_label = "Import .ifc file"
-
     filename_ext = ".ifc"
-    filter_glob: bpy.props.StringProperty(default="*.ifc", options={'HIDDEN'})
+    filter_glob: bpy.props.StringProperty(default="*.ifc;*.ifczip", options={'HIDDEN'})
 
     def execute(self, context):
         start = time.time()