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39 | |
40 | #ifndef QNETWORKDISKCACHE_P_H |
41 | #define QNETWORKDISKCACHE_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists purely as an |
48 | // implementation detail. This header file may change from version to |
49 | // version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include <QtNetwork/private/qtnetworkglobal_p.h> |
55 | #include "private/qabstractnetworkcache_p.h" |
56 | |
57 | #include <qbuffer.h> |
58 | #include <qhash.h> |
59 | #include <qtemporaryfile.h> |
60 | |
61 | QT_REQUIRE_CONFIG(networkdiskcache); |
62 | |
63 | QT_BEGIN_NAMESPACE |
64 | |
65 | class QFile; |
66 | |
67 | class QCacheItem |
68 | { |
69 | public: |
70 | QCacheItem() : file(nullptr) |
71 | { |
72 | } |
73 | ~QCacheItem() |
74 | { |
75 | reset(); |
76 | } |
77 | |
78 | QNetworkCacheMetaData metaData; |
79 | QBuffer data; |
80 | QTemporaryFile *file; |
81 | inline qint64 size() const |
82 | { return file ? file->size() : data.size(); } |
83 | |
84 | inline void reset() { |
85 | metaData = QNetworkCacheMetaData(); |
86 | data.close(); |
87 | delete file; |
88 | file = nullptr; |
89 | } |
90 | void (QFile *device) const; |
91 | void writeCompressedData(QFile *device) const; |
92 | bool read(QFile *device, bool readData); |
93 | |
94 | bool canCompress() const; |
95 | }; |
96 | |
97 | class QNetworkDiskCachePrivate : public QAbstractNetworkCachePrivate |
98 | { |
99 | public: |
100 | QNetworkDiskCachePrivate() |
101 | : QAbstractNetworkCachePrivate() |
102 | , maximumCacheSize(1024 * 1024 * 50) |
103 | , currentCacheSize(-1) |
104 | {} |
105 | |
106 | static QString uniqueFileName(const QUrl &url); |
107 | QString cacheFileName(const QUrl &url) const; |
108 | QString tmpCacheFileName() const; |
109 | bool removeFile(const QString &file); |
110 | void storeItem(QCacheItem *item); |
111 | void prepareLayout(); |
112 | static quint32 crc32(const char *data, uint len); |
113 | |
114 | mutable QCacheItem lastItem; |
115 | QString cacheDirectory; |
116 | QString dataDirectory; |
117 | qint64 maximumCacheSize; |
118 | qint64 currentCacheSize; |
119 | |
120 | QHash<QIODevice*, QCacheItem*> inserting; |
121 | Q_DECLARE_PUBLIC(QNetworkDiskCache) |
122 | }; |
123 | |
124 | QT_END_NAMESPACE |
125 | |
126 | #endif // QNETWORKDISKCACHE_P_H |
127 | |