issue #1027 use unicode filepaths

src/Mod/Part/App/ImportStep.cpp

@@ -76,6 +76,7 @@
 #include "ImportStep.h"
 #include "PartFeature.h"
 #include "ProgressIndicator.h"
+#include "encodeFilename.h"
 
 using namespace Part;
 
@@ -95,8 +96,11 @@ int Part::ImportStepParts(App::Document *pcDoc, const char* Name)
         str << "File '" << Name << "' does not exist!";
         throw Base::Exception(str.str().c_str());
     }
+    std::string encodednamestr = encodeFilename(std::string(Name));
+    const char * encodedname = encodednamestr.c_str();
 
-    if (aReader.ReadFile((Standard_CString)Name) != IFSelect_RetDone) {
+    if (aReader.ReadFile((Standard_CString)encodedname) != 
+            IFSelect_RetDone) {
         throw Base::Exception("Cannot open STEP file");
     }