mehrere oft verwendete Routinen in eigene utils.py eingebaut

lib/drawdxf.py

@@ -14,6 +14,7 @@ import updateconfignames as uc
 from pathlib import Path
 
 from error_collector import ErrorCollector, write_json_file
+from utils import check_file_in_work
 
 
 @dataclass
@@ -794,16 +795,6 @@ def _create_bom_workbook(outpath, processed_data, bezeichner_cfg):
     wb.save(bom_path)
     print(f"BOM exported to Excel-file")
 
-def check_file_in_work(work_dir, filename):
-    fexists = True
-    if not os.path.exists(filename):
-        mypath = os.path.join(work_dir, filename)
-        if not os.path.exists(mypath):
-            fexists = False
-    else:
-        mypath = filename
-    return (mypath, fexists)
-
 def copy_layers_into_dxf_by_filter(dxf_source: ezdxf.document.Drawing, dxf_target:ezdxf.document.Drawing):
     """
     Kopiert bestimmte Layer (nach Filter) von einer Quell-DXF in eine Ziel-DXF.