warning (in Unicode only) fix

[wxWidgets.git] / src / common / dircmn.cpp

diff --git a/src/common/dircmn.cpp b/src/common/dircmn.cpp
index dc0b24bbc12b3d4bc6c60ffacf6dda9bb1e837d1..246df8fb3abfa159ffa09314abf90f097275f360 100644 (file)
--- a/src/common/dircmn.cpp
+++ b/src/common/dircmn.cpp
@@ -6,7 +6,7 @@
 // Created:     19.05.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// License:     wxWindows license
+// License:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
@@ -43,6 +43,16 @@
 // implementation
 // ============================================================================
 
+// ----------------------------------------------------------------------------
+// wxDirTraverser
+// ----------------------------------------------------------------------------
+
+wxDirTraverseResult
+wxDirTraverser::OnOpenError(const wxString& WXUNUSED(dirname))
+{
+    return wxDIR_IGNORE;
+}
+
 // ----------------------------------------------------------------------------
 // wxDir::HasFiles() and HasSubDirs()
 // ----------------------------------------------------------------------------
@@ -88,29 +98,75 @@ size_t wxDir::Traverse(wxDirTraverser& sink,
     if ( flags & wxDIR_DIRS )
     {
         wxString dirname;
-        bool cont = GetFirst(&dirname, _T(""), wxDIR_DIRS | wxDIR_HIDDEN);
-        while ( cont )
+        for ( bool cont = GetFirst(&dirname, _T(""), wxDIR_DIRS | wxDIR_HIDDEN);
+              cont;
+              cont = GetNext(&dirname) )
         {
-            wxDirTraverseResult res = sink.OnDir(prefix + dirname);
+            const wxString fulldirname = prefix + dirname;
 
-            if ( res == wxDIR_STOP )
-                break;
-
-            if ( res == wxDIR_CONTINUE )
+            switch ( sink.OnDir(fulldirname) )
             {
-                wxDir subdir(prefix + dirname);
-                if ( subdir.IsOpened() )
-                {
-                    nFiles += subdir.Traverse(sink, filespec, flags);
-                }
+                default:
+                    wxFAIL_MSG(_T("unexpected OnDir() return value") );
+                    // fall through
+
+                case wxDIR_STOP:
+                    cont = false;
+                    break;
+
+                case wxDIR_CONTINUE:
+                    {
+                        wxDir subdir;
+
+                        // don't give the error messages for the directories
+                        // which we can't open: there can be all sorts of good
+                        // reason for this (e.g. insufficient privileges) and
+                        // this shouldn't be treated as an error -- instead
+                        // let the user code decide what to do
+                        bool ok;
+                        do
+                        {
+                            wxLogNull noLog;
+                            ok = subdir.Open(fulldirname);
+                            if ( !ok )
+                            {
+                                // ask the user code what to do
+                                bool tryagain;
+                                switch ( sink.OnOpenError(fulldirname) )
+                                {
+                                    default:
+                                        wxFAIL_MSG(_T("unexpected OnOpenError() return value") );
+                                        // fall through
+
+                                    case wxDIR_STOP:
+                                        cont = false;
+                                        // fall through
+
+                                    case wxDIR_IGNORE:
+                                        tryagain = false;
+                                        break;
+
+                                    case wxDIR_CONTINUE:
+                                        tryagain = true;
+                                }
+
+                                if ( !tryagain )
+                                    break;
+                            }
+                        }
+                        while ( !ok );
+
+                        if ( ok )
+                        {
+                            nFiles += subdir.Traverse(sink, filespec, flags);
+                        }
+                    }
+                    break;
+
+                case wxDIR_IGNORE:
+                    // nothing to do
+                    ;
             }
-            else
-            {
-                wxASSERT_MSG( res == wxDIR_IGNORE,
-                              _T("unexpected OnDir() return value") );
-            }
-
-            cont = GetNext(&dirname);
         }
     }