From 990385029ebd01770c82889c9469a0ac4d0aff17 Mon Sep 17 00:00:00 2001
From: Markus Goetz <Markus.Goetz@nokia.com>
Date: Mon, 21 Feb 2011 16:06:51 +0100
Subject: QNAM File: Switch back to use QFile

Using file engines directly does not anymore have the benefit intended.
We now use QFile again as we did before.

Reviewed-by: Martin Petersson
---
 src/network/access/qnetworkreplyfileimpl.cpp | 48 ++++++++++------------------
 src/network/access/qnetworkreplyfileimpl_p.h |  6 ++--
 2 files changed, 18 insertions(+), 36 deletions(-)

diff --git a/src/network/access/qnetworkreplyfileimpl.cpp b/src/network/access/qnetworkreplyfileimpl.cpp
index 686eb5f..babee32 100644
--- a/src/network/access/qnetworkreplyfileimpl.cpp
+++ b/src/network/access/qnetworkreplyfileimpl.cpp
@@ -49,15 +49,10 @@
 QT_BEGIN_NAMESPACE
 
 QNetworkReplyFileImplPrivate::QNetworkReplyFileImplPrivate()
-    : QNetworkReplyPrivate(), fileEngine(0), fileSize(0), filePos(0)
+    : QNetworkReplyPrivate(), realFileSize(0)
 {
 }
 
-QNetworkReplyFileImplPrivate::~QNetworkReplyFileImplPrivate()
-{
-    delete fileEngine;
-}
-
 QNetworkReplyFileImpl::~QNetworkReplyFileImpl()
 {
 }
@@ -112,15 +107,15 @@ QNetworkReplyFileImpl::QNetworkReplyFileImpl(QObject *parent, const QNetworkRequ
         return;
     }
 
-    d->fileEngine = QAbstractFileEngine::create(fileName);
-    bool opened = d->fileEngine->open(QIODevice::ReadOnly | QIODevice::Unbuffered);
+    d->realFile.setFileName(fileName);
+    bool opened = d->realFile.open(QIODevice::ReadOnly | QIODevice::Unbuffered);
 
     // could we open the file?
     if (!opened) {
         QString msg = QCoreApplication::translate("QNetworkAccessFileBackend", "Error opening %1: %2")
-                      .arg(fileName, d->fileEngine->errorString());
+                .arg(d->realFile.fileName(), d->realFile.errorString());
 
-        if (fi.exists()) {
+        if (d->realFile.exists()) {
             setError(QNetworkReply::ContentAccessDenied, msg);
             QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection,
                 Q_ARG(QNetworkReply::NetworkError, QNetworkReply::ContentAccessDenied));
@@ -133,13 +128,13 @@ QNetworkReplyFileImpl::QNetworkReplyFileImpl(QObject *parent, const QNetworkRequ
         return;
     }
 
-    d->fileSize = fi.size();
     setHeader(QNetworkRequest::LastModifiedHeader, fi.lastModified());
-    setHeader(QNetworkRequest::ContentLengthHeader, d->fileSize);
+    d->realFileSize = fi.size();
+    setHeader(QNetworkRequest::ContentLengthHeader, d->realFileSize);
 
     QMetaObject::invokeMethod(this, "metaDataChanged", Qt::QueuedConnection);
     QMetaObject::invokeMethod(this, "downloadProgress", Qt::QueuedConnection,
-        Q_ARG(qint64, d->fileSize), Q_ARG(qint64, d->fileSize));
+        Q_ARG(qint64, d->realFileSize), Q_ARG(qint64, d->realFileSize));
     QMetaObject::invokeMethod(this, "readyRead", Qt::QueuedConnection);
     QMetaObject::invokeMethod(this, "finished", Qt::QueuedConnection);
 }
@@ -147,25 +142,20 @@ void QNetworkReplyFileImpl::close()
 {
     Q_D(QNetworkReplyFileImpl);
     QNetworkReply::close();
-    if (d->fileEngine)
-        d->fileEngine->close();
+    d->realFile.close();
 }
 
 void QNetworkReplyFileImpl::abort()
 {
     Q_D(QNetworkReplyFileImpl);
     QNetworkReply::close();
-    if (d->fileEngine)
-        d->fileEngine->close();
+    d->realFile.close();
 }
 
 qint64 QNetworkReplyFileImpl::bytesAvailable() const
 {
     Q_D(const QNetworkReplyFileImpl);
-    if (!d->fileEngine)
-        return 0;
-
-    return QNetworkReply::bytesAvailable() + d->fileSize - d->filePos;
+    return QNetworkReply::bytesAvailable() + d->realFile.bytesAvailable();
 }
 
 bool QNetworkReplyFileImpl::isSequential () const
@@ -176,7 +166,7 @@ bool QNetworkReplyFileImpl::isSequential () const
 qint64 QNetworkReplyFileImpl::size() const
 {
     Q_D(const QNetworkReplyFileImpl);
-    return d->fileSize;
+    return d->realFileSize;
 }
 
 /*!
@@ -185,17 +175,11 @@ qint64 QNetworkReplyFileImpl::size() const
 qint64 QNetworkReplyFileImpl::readData(char *data, qint64 maxlen)
 {
     Q_D(QNetworkReplyFileImpl);
-    if (!d->fileEngine)
+    qint64 ret = d->realFile.read(data, maxlen);
+    if (ret == 0 && bytesAvailable() == 0)
         return -1;
-
-    qint64 ret = d->fileEngine->read(data, maxlen);
-    if (ret == 0 && bytesAvailable() == 0) {
-        return -1; // everything had been read
-    } else if (ret > 0) {
-        d->filePos += ret;
-    }
-
-    return ret;
+    else
+        return ret;
 }
 
 
diff --git a/src/network/access/qnetworkreplyfileimpl_p.h b/src/network/access/qnetworkreplyfileimpl_p.h
index 627363f..393e3cd 100644
--- a/src/network/access/qnetworkreplyfileimpl_p.h
+++ b/src/network/access/qnetworkreplyfileimpl_p.h
@@ -86,11 +86,9 @@ class QNetworkReplyFileImplPrivate: public QNetworkReplyPrivate
 {
 public:
     QNetworkReplyFileImplPrivate();
-    ~QNetworkReplyFileImplPrivate();
 
-    QAbstractFileEngine *fileEngine;
-    qint64 fileSize;
-    qint64 filePos;
+    QFile realFile;
+    qint64 realFileSize;
 
     Q_DECLARE_PUBLIC(QNetworkReplyFileImpl)
 };
-- 
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