qabstractnetworkcache.cpp

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#include "qabstractnetworkcache.h"
#include "qabstractnetworkcache_p.h"

#include <qdatetime.h>
#include <qurl.h>

#include <qdebug.h>

QT_BEGIN_NAMESPACE

class QNetworkCacheMetaDataPrivate : public QSharedData
{

public:
    QNetworkCacheMetaDataPrivate()
        : QSharedData()
        , saveToDisk(true)
    {}

    bool operator==(const QNetworkCacheMetaDataPrivate &other) const
    {
        return
            url == other.url
            && lastModified == other.lastModified
            && expirationDate == other.expirationDate
            && headers == other.headers
            && saveToDisk == other.saveToDisk;
    }

    QUrl url;
    QDateTime lastModified;
    QDateTime expirationDate;
    QNetworkCacheMetaData::RawHeaderList headers;
    QNetworkCacheMetaData::AttributesMap attributes;
    bool saveToDisk;

    static void save(QDataStream &out, const QNetworkCacheMetaData &metaData);
    static void load(QDataStream &in, QNetworkCacheMetaData &metaData);
};
Q_GLOBAL_STATIC(QNetworkCacheMetaDataPrivate, metadata_shared_invalid)


QNetworkCacheMetaData::QNetworkCacheMetaData()
    : d(new QNetworkCacheMetaDataPrivate)
{
}

QNetworkCacheMetaData::~QNetworkCacheMetaData()
{
    // QSharedDataPointer takes care of freeing d
}

QNetworkCacheMetaData::QNetworkCacheMetaData(const QNetworkCacheMetaData &other)
    : d(other.d)
{
}

QNetworkCacheMetaData &QNetworkCacheMetaData::operator=(const QNetworkCacheMetaData &other)
{
    d = other.d;
    return *this;
}

bool QNetworkCacheMetaData::operator==(const QNetworkCacheMetaData &other) const
{
    if (d == other.d)
        return true;
    if (d && other.d)
        return *d == *other.d;
    return false;
}

bool QNetworkCacheMetaData::isValid() const
{
    return !(*d == *metadata_shared_invalid());
}

bool QNetworkCacheMetaData::saveToDisk() const
{
    return d->saveToDisk;
}

void QNetworkCacheMetaData::setSaveToDisk(bool allow)
{
    d->saveToDisk = allow;
}

QUrl QNetworkCacheMetaData::url() const
{
    return d->url;
}

void QNetworkCacheMetaData::setUrl(const QUrl &url)
{
    d->url = url;
    d->url.setPassword(QString());
    d->url.setFragment(QString());
}

QNetworkCacheMetaData::RawHeaderList QNetworkCacheMetaData::rawHeaders() const
{
    return d->headers;
}

void QNetworkCacheMetaData::setRawHeaders(const RawHeaderList &list)
{
    d->headers = list;
}

QDateTime QNetworkCacheMetaData::lastModified() const
{
    return d->lastModified;
}

void QNetworkCacheMetaData::setLastModified(const QDateTime &dateTime)
{
    d->lastModified = dateTime;
}

QDateTime QNetworkCacheMetaData::expirationDate() const
{
    return d->expirationDate;
}

void QNetworkCacheMetaData::setExpirationDate(const QDateTime &dateTime)
{
    d->expirationDate = dateTime;
}

QNetworkCacheMetaData::AttributesMap QNetworkCacheMetaData::attributes() const
{
    return d->attributes;
}

void QNetworkCacheMetaData::setAttributes(const AttributesMap &attributes)
{
    d->attributes = attributes;
}

QDataStream &operator<<(QDataStream &out, const QNetworkCacheMetaData &metaData)
{
    QNetworkCacheMetaDataPrivate::save(out, metaData);
    return out;
}

static inline QDataStream &operator<<(QDataStream &out, const QNetworkCacheMetaData::AttributesMap &hash)
{
    out << quint32(hash.size());
    QNetworkCacheMetaData::AttributesMap::ConstIterator it = hash.end();
    QNetworkCacheMetaData::AttributesMap::ConstIterator begin = hash.begin();
    while (it != begin) {
        --it;
        out << int(it.key()) << it.value();
    }
    return out;
}

void QNetworkCacheMetaDataPrivate::save(QDataStream &out, const QNetworkCacheMetaData &metaData)
{
    // note: if you change the contents of the meta data here
    // remember to bump the cache version in qnetworkdiskcache.cpp CurrentCacheVersion
    out << metaData.url();
    out << metaData.expirationDate();
    out << metaData.lastModified();
    out << metaData.saveToDisk();
    out << metaData.attributes();
    out << metaData.rawHeaders();
}

QDataStream &operator>>(QDataStream &in, QNetworkCacheMetaData &metaData)
{
    QNetworkCacheMetaDataPrivate::load(in, metaData);
    return in;
}

static inline QDataStream &operator>>(QDataStream &in, QNetworkCacheMetaData::AttributesMap &hash)
{
    hash.clear();
    QDataStream::Status oldStatus = in.status();
    in.resetStatus();
    hash.clear();

    quint32 n;
    in >> n;

    for (quint32 i = 0; i < n; ++i) {
        if (in.status() != QDataStream::Ok)
            break;

        int k;
        QVariant t;
        in >> k >> t;
        hash.insertMulti(QNetworkRequest::Attribute(k), t);
    }

    if (in.status() != QDataStream::Ok)
        hash.clear();
    if (oldStatus != QDataStream::Ok)
        in.setStatus(oldStatus);
    return in;
}

void QNetworkCacheMetaDataPrivate::load(QDataStream &in, QNetworkCacheMetaData &metaData)
{
    in >> metaData.d->url;
    in >> metaData.d->expirationDate;
    in >> metaData.d->lastModified;
    in >> metaData.d->saveToDisk;
    in >> metaData.d->attributes;
    in >> metaData.d->headers;
}

QAbstractNetworkCache::QAbstractNetworkCache(QObject *parent)
    : QObject(*new QAbstractNetworkCachePrivate, parent)
{
}

QAbstractNetworkCache::QAbstractNetworkCache(QAbstractNetworkCachePrivate &dd, QObject *parent)
    : QObject(dd, parent)
{
}

QAbstractNetworkCache::~QAbstractNetworkCache()
{
}

QT_END_NAMESPACE