??? file handling

Author: syntron

OMPython/ModelicaSystem.py

@@ -402,23 +402,28 @@ def model(
         self._libraries = libraries  # may be needed if model is derived from other model
         self._variable_filter = variable_filter
 
+        if self._libraries:
+            self._loadLibrary(libraries=self._libraries)
+
+        self._file_name = None
         if file is not None:
+            file_path = pathlib.Path(file)
             # special handling for OMCProcessLocal - consider a relative path
-            if isinstance(self._session.omc_process, OMCProcessLocal):
-                file_path = pathlib.Path(file)
-                if not file_path.is_absolute():
-                    file_path = pathlib.Path.cwd() / file_path
+            if isinstance(self._session.omc_process, OMCProcessLocal) and not file_path.is_absolute():
+                file_path = pathlib.Path.cwd() / file_path
+            if not file_path.is_file():
+                raise IOError(f"Model file {file_path} does not exist!")
+
+            self._file_name = self.getWorkDirectory() / file_path.name
+            if (isinstance(self._session.omc_process, OMCProcessLocal)
+                    and file_path.as_posix() == self._file_name.as_posix()):
+                pass
+            elif self._file_name.is_file():
+                raise IOError(f"Simulation model file {self._file_name} exist - not overwriting!")
             else:
-                file_path = self._session.omcpath(file).resolve()
+                content = file_path.read_text(encoding='utf-8')
+                self._file_name.write_text(content)
 
-            self._file_name = self._session.omcpath(file_path)
-            if not self._file_name.is_file():
-                raise IOError(f"{self._file_name} does not exist!")
-        else:
-            self._file_name = None
-
-        if self._libraries:
-            self._loadLibrary(libraries=self._libraries)
         if self._file_name is not None:
             self._loadFile(fileName=self._file_name)