--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/network/access/qnetworkaccessdatabackend.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qnetworkaccessdatabackend_p.h"
+#include "qnetworkrequest.h"
+#include "qnetworkreply.h"
+#include "qurlinfo.h"
+
+QT_BEGIN_NAMESPACE
+
+QNetworkAccessBackend *
+QNetworkAccessDataBackendFactory::create(QNetworkAccessManager::Operation,
+                                         const QNetworkRequest &request) const
+{
+    if (request.url().scheme() == QLatin1String("data"))
+        return new QNetworkAccessDataBackend;
+
+    return 0;
+}
+
+QNetworkAccessDataBackend::QNetworkAccessDataBackend()
+{
+}
+
+QNetworkAccessDataBackend::~QNetworkAccessDataBackend()
+{
+}
+
+void QNetworkAccessDataBackend::open()
+{
+    QUrl uri = request().url();
+
+    if (operation() != QNetworkAccessManager::GetOperation &&
+        operation() != QNetworkAccessManager::HeadOperation) {
+        // data: doesn't support anything but GET
+        QString msg = QObject::tr("Operation not supported on %1")
+                      .arg(uri.toString());
+        error(QNetworkReply::ContentOperationNotPermittedError, msg);
+        finished();
+        return;
+    }
+
+    if (uri.host().isEmpty()) {
+        setHeader(QNetworkRequest::ContentTypeHeader, QLatin1String("text/plain;charset=US-ASCII"));
+
+        // the following would have been the correct thing, but
+        // reality often differs from the specification. People have
+        // data: URIs with ? and #
+        //QByteArray data = QByteArray::fromPercentEncoding(uri.encodedPath());
+        QByteArray data = QByteArray::fromPercentEncoding(uri.toEncoded());
+
+        // remove the data: scheme
+        data.remove(0, 5);
+
+        // parse it:
+        int pos = data.indexOf(',');
+        if (pos != -1) {
+            QByteArray payload = data.mid(pos + 1);
+            data.truncate(pos);
+            data = data.trimmed();
+
+            // find out if the payload is encoded in Base64
+            if (data.endsWith(";base64")) {
+                payload = QByteArray::fromBase64(payload);
+                data.chop(7);
+            }
+
+            if (data.toLower().startsWith("charset")) {
+                int i = 7;      // strlen("charset")
+                while (data.at(i) == ' ')
+                    ++i;
+                if (data.at(i) == '=')
+                    data.prepend("text/plain;");
+            }
+
+            if (!data.isEmpty())
+                setHeader(QNetworkRequest::ContentTypeHeader, data.trimmed());
+
+            setHeader(QNetworkRequest::ContentLengthHeader, payload.size());
+            emit metaDataChanged();
+
+            QByteDataBuffer list;
+            list.append(payload);
+            payload.clear(); // important because of implicit sharing!
+            writeDownstreamData(list);
+
+            finished();
+            return;
+        }
+    }
+
+    // something wrong with this URI
+    QString msg = QObject::tr("Invalid URI: %1").arg(uri.toString());
+    error(QNetworkReply::ProtocolFailure, msg);
+    finished();
+}
+
+void QNetworkAccessDataBackend::closeDownstreamChannel()
+{
+}
+
+void QNetworkAccessDataBackend::closeUpstreamChannel()
+{
+}
+
+bool QNetworkAccessDataBackend::waitForDownstreamReadyRead(int)
+{
+    return false;
+}
+
+bool QNetworkAccessDataBackend::waitForUpstreamBytesWritten(int)
+{
+    return false;
+}
+
+QT_END_NAMESPACE