From f1e9c0f3d22d611bfaa14c30a34e6042500a0cb8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Abecasis?= <joao@abecasis.name>
Date: Wed, 15 Apr 2009 14:24:43 +0200
Subject: Allow renaming QTemporaryFiles on windows

Changed the fallback implementation to use 'this' instead of a new
QFile. This allows a QTemporaryFile to be block-copied to the
destination and the source to be removed (QTemporaryFile is special
because it isn't really closed).

Reviewed-by: Peter Hartmann
Reviewed-by: Thiago
---
 src/corelib/io/qfile.cpp | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/src/corelib/io/qfile.cpp b/src/corelib/io/qfile.cpp
index 4110494..d3cee9a 100644
--- a/src/corelib/io/qfile.cpp
+++ b/src/corelib/io/qfile.cpp
@@ -723,26 +723,25 @@ QFile::rename(const QString &newName)
             return false;
         }
 
-        QFile in(fileName());
         QFile out(newName);
-        if (in.open(QIODevice::ReadOnly)) {
+        if (open(QIODevice::ReadOnly)) {
             if (out.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
                 bool error = false;
                 char block[4096];
-                qint64 read;
-                while ((read = in.read(block, sizeof(block))) > 0) {
-                    if (read != out.write(block, read)) {
+                qint64 bytes;
+                while ((bytes = read(block, sizeof(block))) > 0) {
+                    if (bytes != out.write(block, bytes)) {
                         d->setError(QFile::RenameError, out.errorString());
                         error = true;
                         break;
                     }
                 }
-                if (read == -1) {
-                    d->setError(QFile::RenameError, in.errorString());
+                if (bytes == -1) {
+                    d->setError(QFile::RenameError, errorString());
                     error = true;
                 }
                 if(!error) {
-                    if (!in.remove()) {
+                    if (!remove()) {
                         d->setError(QFile::RenameError, tr("Cannot remove source file"));
                         error = true;
                     }
@@ -751,10 +750,12 @@ QFile::rename(const QString &newName)
                     out.remove();
                 else
                     setFileName(newName);
+                close();
                 return !error;
             }
+            close();
         }
-        d->setError(QFile::RenameError, out.isOpen() ? in.errorString() : out.errorString());
+        d->setError(QFile::RenameError, out.isOpen() ? errorString() : out.errorString());
     }
     return false;
 }
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