Material: Use "et" format unit to parse path

Author: marioalexis84

src/Mod/Material/App/MaterialManagerPyImpl.cpp

@@ -71,17 +71,20 @@ PyObject* MaterialManagerPy::getMaterial(PyObject* args)
 
 PyObject* MaterialManagerPy::getMaterialByPath(PyObject* args)
 {
-    char* path {};
+    char* path;
     const char* lib = "";
-    if (!PyArg_ParseTuple(args, "s|s", &path, &lib)) {
+    if (!PyArg_ParseTuple(args, "et|s", "utf-8", &path, &lib)) {
         return nullptr;
     }
 
+    std::string utf8Path = std::string(path);
+    PyMem_Free(path);
+
     QString libPath(QString::fromStdString(lib));
     if (!libPath.isEmpty()) {
         try {
             auto material =
-                getMaterialManagerPtr()->getMaterialByPath(QString::fromStdString(path), libPath);
+                getMaterialManagerPtr()->getMaterialByPath(QString::fromUtf8(utf8Path.c_str()), libPath);
             return new MaterialPy(new Material(*material));
         }
         catch (const MaterialNotFound&) {
@@ -95,7 +98,7 @@ PyObject* MaterialManagerPy::getMaterialByPath(PyObject* args)
     }
 
     try {
-        auto material = getMaterialManagerPtr()->getMaterialByPath(QString::fromStdString(path));
+        auto material = getMaterialManagerPtr()->getMaterialByPath(QString::fromUtf8(utf8Path.c_str()));
         return new MaterialPy(new Material(*material));
     }
     catch (const MaterialNotFound&) {