Currently teh parameters that have spaces are not properly parsed when invoking os.execv.
Ej:
We start blender with some parameters and then invoke bim.restart_blender:
C:\Users\falke>c:\Users\falke\Documents\blender-4.2.8-windows-x64\blender.exe --debug --python-expr "import bpy; bpy.ops.bim.load_project(filepath='C:/Users/falke/Documents/bonsaiDevel/Testing.ifc', should_start_fresh_session=True, use_detailed_tooltip=True)"
TBBmalloc: skip allocation functions replacement in ucrtbase.dll: unknown prologue for function _msize
Switching to fully guarded memory allocator.
Blender 4.2.8 LTS
Build: 2025-03-18 01:34:37 Windows Release
argv[0] = c:\Users\falke\Documents\blender-4.2.8-windows-x64\blender.exe
argv[1] = --debug
argv[2] = --python-expr
argv[3] = import bpy; bpy.ops.bim.load_project(filepath='C:/Users/falke/Documents/bonsaiDevel/Testing.ifc', should_start_fresh_session=True, use_detailed_tooltip=True)
Starting import process :: 0.00
Loading file :: 0.00
Calculate unit scale :: 0.00
Process context filter :: 0.01
Calculate model offset :: 0.00
Set units :: 0.00
Create project :: 0.00
Process element filter :: 0.00
Create styles :: 0.00
Parsing native elements :: 0.00
Done creating geometry
Create native elements :: 0.00
Done creating geometry
Create elements :: 0.03
Create annotations :: 0.00
Create positioning elements :: 0.00
0 / 3 elements processed ...
Create spatial elements :: 0.00
Create structural items :: 0.00
Create element types :: 0.00
Place objects in collections :: 0.00
Setup arrays :: 0.00
Load linked models :: 0.00
Add project to scene :: 0.00
Setting default context :: 0.01
Import finished in 0.06 seconds
No MySQL support
Writing userprefs: "C:\Users\falke\AppData\Roaming\Blender Foundation\Blender\4.2\config\userpref.blend" ok
Info: Preferences saved
TBBmalloc: skip allocation functions replacement in ucrtbase.dll: unknown prologue for function _msize
Switching to fully guarded memory allocator.
Blender 4.2.8 LTS
Build: 2025-03-18 01:34:37 Windows Release
argv[0] = c:\Users\falke\Documents\blender-4.2.8-windows-x64\blender.exe
argv[1] = --debug
argv[2] = --python-expr
argv[3] = import
argv[4] = bpy;
argv[5] = bpy.ops.bim.load_project(filepath='C:/Users/falke/Documents/bonsaiDevel/Testing.ifc',
argv[6] = should_start_fresh_session=True,
argv[7] = use_detailed_tooltip=True)
C:\Users\falke> File "<string>", line 1
import
^
SyntaxError: invalid syntax
Error: Cannot read file "C:\Users\falke\bpy;": No such file or directory
Error: argument has no '.blend' file extension, not using as new file, exiting! C:\Users\falke\bpy;
Blender quit
By adding the proposed list2cmdline based solution, the commandline is properly formated before invoking os.execv
Thanks!
IfcOpenShell
IfcOpenShell is an open source (LGPL) software library for working with Industry Foundation Classes (IFC). Complete parsing support is provided for IFC2x3 TC1, IFC4 Add2 TC1, IFC4x1, IFC4x2, and IFC4x3 Add2. Extensive geometric support is implemented for the IFC releases IFC2x3 TC1 and IFC4 Add2 TC1. Extending with support for arbitrary IFC schemas is possible at compile-time when using C++ and at run-time when using Python.
In addition to a C++ and Python API, IfcOpenShell comes with an ecosystem of tools, notably including IfcConvert (an application to convert IFC models to other formats), Bonsai (an add-on to Blender providing a graphical IFC authoring platform), and many other libraries, CLI apps, and more. Support is also provided for auxiliary standards such as BCF and IDS.
For more information, see:
Development is sponsored through your generous donations!
Contents
The IfcOpenShell C++ codebase is split into multiple interal libraries:
| Name | Description | License |
|---|---|---|
| ifcgeom | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcgeom_schema_agnostic | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcgeomserver | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcjni | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcparse | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| ifcwrap | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| qtviewer | Internal library for IfcOpenShell | LGPL-3.0-or-later* |
| serializers | Internal library for IfcOpenShell | LGPL-3.0-or-later* |