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#include <QtNetwork/QNetworkRequest>

#include <QtNetwork/QNetworkReply>

#include "qiodevicedelegate_p.h"

#include "quriloader_p.h"

QT_BEGIN_NAMESPACE

using namespace QPatternist;

URILoader::URILoader(QObject *const parent,

                     const NamePool::Ptr &np,

                     const VariableLoader::Ptr &l) : QNetworkAccessManager(parent)

                                                   , m_variableNS(QLatin1String("tag:trolltech.com,2007:QtXmlPatterns:QIODeviceVariable:"))

                                                   , m_namePool(np)

                                                   , m_variableLoader(l)

{

    Q_ASSERT(m_variableLoader);

}

QNetworkReply *URILoader::createRequest(Operation op, const QNetworkRequest &req, QIODevice *outgoingData)

{

    const QString requestedUrl(req.url().toString());

    /* We got a QIODevice variable. */

    const QString name(requestedUrl.right(requestedUrl.length() - m_variableNS.length()));

    const QVariant variant(m_variableLoader->valueFor(m_namePool->allocateQName(QString(), name, QString())));

    if(!variant.isNull() && variant.userType() == qMetaTypeId<QIODevice *>())

        return new QIODeviceDelegate(qVariantValue<QIODevice *>(variant));

    else

    {

        /* If we're entering this code path, the variable URI identified a variable

         * which we don't have, which means we either have a bug, or the user had

         * crafted an invalid URI manually. */

        return QNetworkAccessManager::createRequest(op, req, outgoingData);

    }

}

QT_END_NAMESPACE