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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
#ifndef QNETWORKDISKCACHE_P_H
#define QNETWORKDISKCACHE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtNetwork/private/qtnetworkglobal_p.h>
#include "private/qabstractnetworkcache_p.h"
#include <qbuffer.h>
#include <qhash.h>
#include <qtemporaryfile.h>
QT_REQUIRE_CONFIG(networkdiskcache);
QT_BEGIN_NAMESPACE
class QFile;
class QCacheItem
{
public:
QCacheItem() : file(nullptr)
{
}
~QCacheItem()
{
reset();
}
QNetworkCacheMetaData metaData;
QBuffer data;
QTemporaryFile *file;
inline qint64 size() const
{ return file ? file->size() : data.size(); }
inline void reset() {
metaData = QNetworkCacheMetaData();
data.close();
delete file;
file = nullptr;
}
void writeHeader(QFile *device) const;
void writeCompressedData(QFile *device) const;
bool read(QFile *device, bool readData);
bool canCompress() const;
};
class QNetworkDiskCachePrivate : public QAbstractNetworkCachePrivate
{
public:
QNetworkDiskCachePrivate()
: QAbstractNetworkCachePrivate()
, maximumCacheSize(1024 * 1024 * 50)
, currentCacheSize(-1)
{}
static QString uniqueFileName(const QUrl &url);
QString cacheFileName(const QUrl &url) const;
QString tmpCacheFileName() const;
bool removeFile(const QString &file);
void storeItem(QCacheItem *item);
void prepareLayout();
static quint32 crc32(const char *data, uint len);
mutable QCacheItem lastItem;
QString cacheDirectory;
QString dataDirectory;
qint64 maximumCacheSize;
qint64 currentCacheSize;
QHash<QIODevice*, QCacheItem*> inserting;
Q_DECLARE_PUBLIC(QNetworkDiskCache)
};
QT_END_NAMESPACE
#endif // QNETWORKDISKCACHE_P_H
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