/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtNetwork module of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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**

** 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.

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** $QT_END_LICENSE$

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****************************************************************************/

#include "qnetworkaccessdatabackend_p.h"

#include "qnetworkrequest.h"

#include "qnetworkreply.h"

#include "qurlinfo.h"

#include "private/qdataurl_p.h"

#include <qcoreapplication.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

        const QString msg = QCoreApplication::translate("QNetworkAccessDataBackend",

                                                        "Operation not supported on %1")

                      .arg(uri.toString());

        error(QNetworkReply::ContentOperationNotPermittedError, msg);

        finished();

        return;

    }

    QPair<QString, QByteArray> decoded = qDecodeDataUrl(uri);

    if (! decoded.first.isNull()) {

        setHeader(QNetworkRequest::ContentTypeHeader, decoded.first);

        setHeader(QNetworkRequest::ContentLengthHeader, decoded.second.size());

        emit metaDataChanged();

        QByteDataBuffer list;

        list.append(decoded.second);

        decoded.second.clear(); // important because of implicit sharing!

        writeDownstreamData(list);

        finished();

        return;

    }

    // something wrong with this URI

    const QString msg = QCoreApplication::translate("QNetworkAccessDataBackend",

                                                    "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