Add renameOverwrite() to QAbstractFileEngine.

QFSFileEngine::rename() on Windows doesn't overwrite the existing destination.
Keep that unchanged (it's the desired behavior in QFile::rename), and
provide cross-platform rename-overwrite behavior in the new method.

This is needed by QSaveFile.

Change-Id: I5e753d289d8a53692530a48a1783d62e26169cdc
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index b91c7d7fe6..8f622d77cd 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -388,6 +388,12 @@ bool QFSFileEngine::copy(const QString &newName)
     return ret;
 }
 
+bool QFSFileEngine::renameOverwrite(const QString &newName)
+{
+    // On Unix, rename() overwrites.
+    return rename(newName);
+}
+
 bool QFSFileEngine::rename(const QString &newName)
 {
     Q_D(QFSFileEngine);