qnetworkreplydataimpl.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qnetworkreplydataimpl_p.h"
#include "private/qdataurl_p.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QMetaObject>
 
QT_BEGIN_NAMESPACE
 
QNetworkReplyDataImplPrivate::QNetworkReplyDataImplPrivate()
    : QNetworkReplyPrivate()
{
}
 
QNetworkReplyDataImplPrivate::~QNetworkReplyDataImplPrivate()
{
}
 
QNetworkReplyDataImpl::~QNetworkReplyDataImpl()
{
}
 
QNetworkReplyDataImpl::QNetworkReplyDataImpl(QObject *parent, const QNetworkRequest &req, const QNetworkAccessManager::Operation op)
    : QNetworkReply(*new QNetworkReplyDataImplPrivate(), parent)
{
    Q_D(QNetworkReplyDataImpl);
    setRequest(req);
    setUrl(req.url());
    setOperation(op);
    setFinished(true);
    QNetworkReply::open(QIODevice::ReadOnly);
 
    QUrl url = req.url();
    QString mimeType;
    QByteArray payload;
    if (qDecodeDataUrl(url, mimeType, payload)) {
        qint64 size = payload.size();
        auto h = headers();
        h.replaceOrAppend(QHttpHeaders::WellKnownHeader::ContentType, mimeType);
        h.replaceOrAppend(QHttpHeaders::WellKnownHeader::ContentLength, QByteArray::number(size));
        setHeaders(std::move(h));
 
        QMetaObject::invokeMethod(this, "metaDataChanged", Qt::QueuedConnection);
 
        d->decodedData.setData(payload);
        d->decodedData.open(QIODevice::ReadOnly);
 
        QMetaObject::invokeMethod(this, "downloadProgress", Qt::QueuedConnection,
                                  Q_ARG(qint64,size), Q_ARG(qint64, size));
        QMetaObject::invokeMethod(this, "readyRead", Qt::QueuedConnection);
        QMetaObject::invokeMethod(this, "finished", Qt::QueuedConnection);
    } else {
        // something wrong with this URI
        const QString msg = QCoreApplication::translate("QNetworkAccessDataBackend",
                                                        "Invalid URI: %1").arg(url.toString());
        setError(QNetworkReply::ProtocolFailure, msg);
        QMetaObject::invokeMethod(this, "errorOccurred", Qt::QueuedConnection,
                                  Q_ARG(QNetworkReply::NetworkError, QNetworkReply::ProtocolFailure));
        QMetaObject::invokeMethod(this, "finished", Qt::QueuedConnection);
    }
}
 
void QNetworkReplyDataImpl::close()
{
    QNetworkReply::close();
}
 
void QNetworkReplyDataImpl::abort()
{
    QNetworkReply::close();
}
 
qint64 QNetworkReplyDataImpl::bytesAvailable() const
{
    Q_D(const QNetworkReplyDataImpl);
    return QNetworkReply::bytesAvailable() + d->decodedData.bytesAvailable();
}
 
bool QNetworkReplyDataImpl::isSequential () const
{
    return true;
}
 
qint64 QNetworkReplyDataImpl::size() const
{
    Q_D(const QNetworkReplyDataImpl);
    return d->decodedData.size();
}
 
qint64 QNetworkReplyDataImpl::readData(char *data, qint64 maxlen)
{
    Q_D(QNetworkReplyDataImpl);
 
    // TODO idea:
    // Instead of decoding the whole data into new memory, we could decode on demand.
    // Note that this might be tricky to do.
 
    return d->decodedData.read(data, maxlen);
}
 
 
QT_END_NAMESPACE
 
#include "moc_qnetworkreplydataimpl_p.cpp"