1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QABSTRACTNETWORKCACHE_H
5#define QABSTRACTNETWORKCACHE_H
6
7#include <QtNetwork/qtnetworkglobal.h>
8#include <QtCore/qobject.h>
9#include <QtCore/qshareddata.h>
10#include <QtCore/qpair.h>
11#include <QtNetwork/qnetworkrequest.h>
12
13QT_BEGIN_NAMESPACE
14
15
16class QIODevice;
17class QDateTime;
18class QUrl;
19
20class QNetworkCacheMetaDataPrivate;
21class Q_NETWORK_EXPORT QNetworkCacheMetaData
22{
23
24public:
25 typedef QPair<QByteArray, QByteArray> RawHeader;
26 typedef QList<RawHeader> RawHeaderList;
27 typedef QHash<QNetworkRequest::Attribute, QVariant> AttributesMap;
28
29 QNetworkCacheMetaData();
30 QNetworkCacheMetaData(const QNetworkCacheMetaData &other);
31 ~QNetworkCacheMetaData();
32
33 QNetworkCacheMetaData &operator=(QNetworkCacheMetaData &&other) noexcept { swap(other); return *this; }
34 QNetworkCacheMetaData &operator=(const QNetworkCacheMetaData &other);
35
36 void swap(QNetworkCacheMetaData &other) noexcept
37 { d.swap(other&: other.d); }
38
39 bool operator==(const QNetworkCacheMetaData &other) const;
40 inline bool operator!=(const QNetworkCacheMetaData &other) const
41 { return !(*this == other); }
42
43 bool isValid() const;
44
45 QUrl url() const;
46 void setUrl(const QUrl &url);
47
48 RawHeaderList rawHeaders() const;
49 void setRawHeaders(const RawHeaderList &headers);
50
51 QHttpHeaders headers() const;
52 void setHeaders(const QHttpHeaders &headers);
53
54 QDateTime lastModified() const;
55 void setLastModified(const QDateTime &dateTime);
56
57 QDateTime expirationDate() const;
58 void setExpirationDate(const QDateTime &dateTime);
59
60 bool saveToDisk() const;
61 void setSaveToDisk(bool allow);
62
63 AttributesMap attributes() const;
64 void setAttributes(const AttributesMap &attributes);
65
66private:
67 friend class QNetworkCacheMetaDataPrivate;
68 QSharedDataPointer<QNetworkCacheMetaDataPrivate> d;
69};
70
71Q_DECLARE_SHARED(QNetworkCacheMetaData)
72
73Q_NETWORK_EXPORT QDataStream &operator<<(QDataStream &, const QNetworkCacheMetaData &);
74Q_NETWORK_EXPORT QDataStream &operator>>(QDataStream &, QNetworkCacheMetaData &);
75
76
77class QAbstractNetworkCachePrivate;
78class Q_NETWORK_EXPORT QAbstractNetworkCache : public QObject
79{
80 Q_OBJECT
81
82public:
83 virtual ~QAbstractNetworkCache();
84
85 virtual QNetworkCacheMetaData metaData(const QUrl &url) = 0;
86 virtual void updateMetaData(const QNetworkCacheMetaData &metaData) = 0;
87 virtual QIODevice *data(const QUrl &url) = 0;
88 virtual bool remove(const QUrl &url) = 0;
89 virtual qint64 cacheSize() const = 0;
90
91 virtual QIODevice *prepare(const QNetworkCacheMetaData &metaData) = 0;
92 virtual void insert(QIODevice *device) = 0;
93
94public Q_SLOTS:
95 virtual void clear() = 0;
96
97protected:
98 explicit QAbstractNetworkCache(QObject *parent = nullptr);
99 QAbstractNetworkCache(QAbstractNetworkCachePrivate &dd, QObject *parent);
100
101private:
102 Q_DECLARE_PRIVATE(QAbstractNetworkCache)
103 Q_DISABLE_COPY(QAbstractNetworkCache)
104};
105
106QT_END_NAMESPACE
107
108#endif
109

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source code of qtbase/src/network/access/qabstractnetworkcache.h