Fix bug: Footprint add 3D shape recognizes only files with lower case ext on Windows

Fixes: lp:1659027
https://bugs.launchpad.net/kicad/+bug/1659027

3d-viewer/3d_cache/3d_cache.cpp

@@ -390,7 +390,11 @@ bool S3D_CACHE::getSHA1( const wxString& aFileName, unsigned char* aSHA1Sum )
         return false;
     }
 
+    #ifdef WIN32
+    FILE* fp = _wfopen( aFileName.wc_str(), L"rb" );
+    #else
     FILE* fp = fopen( aFileName.ToUTF8(), "rb" );
+    #endif
 
     if( NULL == fp )
         return false;

3d-viewer/3d_cache/3d_plugin_manager.cpp

@@ -467,6 +467,12 @@ SCENEGRAPH* S3D_PLUGIN_MANAGER::Load3DModel( const wxString& aFileName, std::str
     wxFileName raw( aFileName );
     wxString ext = raw.GetExt();
 
+    #ifdef WIN32
+    // note: plugins only have a lowercase filter within Windows; including an uppercase
+    // filter will result in duplicate file entries and should be avoided.
+    ext.LowerCase();
+    #endif
+
     std::pair < std::multimap< const wxString, KICAD_PLUGIN_LDR_3D* >::iterator,
         std::multimap< const wxString, KICAD_PLUGIN_LDR_3D* >::iterator > items;
 

plugins/3d/oce/loadmodel.cpp

@@ -28,10 +28,11 @@
 #include <cstring>
 #include <map>
 #include <vector>
+#include <wx/string.h>
+#include <wx/wfstream.h>
 
 #if ( defined( DEBUG_OCE ) && DEBUG_OCE > 3 )
 #include <wx/filename.h>
-#include <wx/string.h>
 #endif
 
 #include <TDocStd_Document.hxx>
@@ -268,16 +269,15 @@ enum FormatType
 
 FormatType fileType( const char* aFileName )
 {
-    std::ifstream ifile;
-    ifile.open( aFileName );
+    wxString fname( wxString::FromUTF8Unchecked( aFileName ) );
+    wxFileInputStream ifile( fname );
 
-    if( !ifile.is_open() )
+    if( !ifile.IsOk() )
         return FMT_NONE;
 
     char iline[82];
     memset( iline, 0, 82 );
-    ifile.getline( iline, 82 );
-    ifile.close();
+    ifile.Read( iline, 82 );
     iline[81] = 0;  // ensure NULL termination when string is too long
 
     // check for STEP in Part 21 format