1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtNetwork module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
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17 ** In addition, as a special exception, Nokia gives you certain additional
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19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
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25 ** file. Please review the following information to ensure the GNU General
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40 ****************************************************************************/
42 #ifndef QNETWORKDISKCACHE_P_H
43 #define QNETWORKDISKCACHE_P_H
49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
56 #include "private/qabstractnetworkcache_p.h"
60 #include <qtemporaryfile.h>
62 #ifndef QT_NO_NETWORKDISKCACHE
71 QCacheItem() : file(0)
79 QNetworkCacheMetaData metaData;
82 inline qint64 size() const
83 { return file ? file->size() : data.size(); }
86 metaData = QNetworkCacheMetaData();
91 void writeHeader(QFile *device) const;
92 void writeCompressedData(QFile *device) const;
93 bool read(QFile *device, bool readData);
95 bool canCompress() const;
98 class QNetworkDiskCachePrivate : public QAbstractNetworkCachePrivate
101 QNetworkDiskCachePrivate()
102 : QAbstractNetworkCachePrivate()
103 , maximumCacheSize(1024 * 1024 * 50)
104 , currentCacheSize(-1)
107 static QString uniqueFileName(const QUrl &url);
108 QString cacheFileName(const QUrl &url) const;
109 QString tmpCacheFileName() const;
110 bool removeFile(const QString &file);
111 void storeItem(QCacheItem *item);
112 void prepareLayout();
113 static quint32 crc32(const char *data, uint len);
115 mutable QCacheItem lastItem;
116 QString cacheDirectory;
117 QString dataDirectory;
118 qint64 maximumCacheSize;
119 qint64 currentCacheSize;
121 QHash<QIODevice*, QCacheItem*> inserting;
122 Q_DECLARE_PUBLIC(QNetworkDiskCache)
127 #endif // QT_NO_NETWORKDISKCACHE
129 #endif // QNETWORKDISKCACHE_P_H