--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/network/access/qnetworkaccesscachebackend.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,158 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//#define QNETWORKACCESSCACHEBACKEND_DEBUG
+
+#include "qnetworkaccesscachebackend_p.h"
+#include "qabstractnetworkcache.h"
+#include "qfileinfo.h"
+#include "qurlinfo.h"
+#include "qdir.h"
+#include "qcoreapplication.h"
+
+QT_BEGIN_NAMESPACE
+
+QNetworkAccessCacheBackend::QNetworkAccessCacheBackend()
+    : QNetworkAccessBackend()
+    , device(0)
+{
+}
+
+QNetworkAccessCacheBackend::~QNetworkAccessCacheBackend()
+{
+}
+
+void QNetworkAccessCacheBackend::open()
+{
+    if (operation() != QNetworkAccessManager::GetOperation || !sendCacheContents()) {
+        QString msg = QCoreApplication::translate("QNetworkAccessCacheBackend", "Error opening %1")
+                                                .arg(this->url().toString());
+        error(QNetworkReply::ContentNotFoundError, msg);
+        setAttribute(QNetworkRequest::SourceIsFromCacheAttribute, true);
+    }
+    finished();
+}
+
+bool QNetworkAccessCacheBackend::sendCacheContents()
+{
+    setCachingEnabled(false);
+    QAbstractNetworkCache *nc = networkCache();
+    if (!nc)
+        return false;
+
+    QNetworkCacheMetaData item = nc->metaData(url());
+    if (!item.isValid())
+        return false;
+
+    QNetworkCacheMetaData::AttributesMap attributes = item.attributes();
+    setAttribute(QNetworkRequest::HttpStatusCodeAttribute, attributes.value(QNetworkRequest::HttpStatusCodeAttribute));
+    setAttribute(QNetworkRequest::HttpReasonPhraseAttribute, attributes.value(QNetworkRequest::HttpReasonPhraseAttribute));
+    setAttribute(QNetworkRequest::SourceIsFromCacheAttribute, true);
+
+    // set the raw headers
+    QNetworkCacheMetaData::RawHeaderList rawHeaders = item.rawHeaders();
+    QNetworkCacheMetaData::RawHeaderList::ConstIterator it = rawHeaders.constBegin(),
+                                                       end = rawHeaders.constEnd();
+    for ( ; it != end; ++it)
+        setRawHeader(it->first, it->second);
+
+    // handle a possible redirect
+    QVariant redirectionTarget = attributes.value(QNetworkRequest::RedirectionTargetAttribute);
+    if (redirectionTarget.isValid()) {
+        setAttribute(QNetworkRequest::RedirectionTargetAttribute, redirectionTarget);
+        redirectionRequested(redirectionTarget.toUrl());
+    }
+
+    // signal we're open
+    metaDataChanged();
+
+    if (operation() == QNetworkAccessManager::GetOperation) {
+        QIODevice *contents = nc->data(url());
+        if (!contents)
+            return false;
+        contents->setParent(this);
+        writeDownstreamData(contents);
+    }
+
+#if defined(QNETWORKACCESSCACHEBACKEND_DEBUG)
+    qDebug() << "Successfully sent cache:" << url();
+#endif
+    return true;
+}
+
+void QNetworkAccessCacheBackend::closeDownstreamChannel()
+{
+    if (operation() == QNetworkAccessManager::GetOperation) {
+        device->close();
+        delete device;
+        device = 0;
+    }
+}
+
+void QNetworkAccessCacheBackend::closeUpstreamChannel()
+{
+    Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
+}
+
+bool QNetworkAccessCacheBackend::waitForDownstreamReadyRead(int)
+{
+    Q_ASSERT_X(false, Q_FUNC_INFO , "This function show not have been called!");
+    return false;
+}
+
+bool QNetworkAccessCacheBackend::waitForUpstreamBytesWritten(int)
+{
+    Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
+    return false;
+}
+
+void QNetworkAccessCacheBackend::upstreamReadyRead()
+{
+    Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
+}
+
+void QNetworkAccessCacheBackend::downstreamReadyWrite()
+{
+    Q_ASSERT_X(false, Q_FUNC_INFO, "This function show not have been called!");
+}
+
+QT_END_NAMESPACE
+