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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtNetwork module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #ifndef QNETWORKDISKCACHE_P_H |
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43 #define QNETWORKDISKCACHE_P_H |
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44 |
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45 // |
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46 // W A R N I N G |
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47 // ------------- |
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48 // |
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49 // This file is not part of the Qt API. It exists purely as an |
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50 // implementation detail. This header file may change from version to |
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51 // version without notice, or even be removed. |
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52 // |
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53 // We mean it. |
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54 // |
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55 |
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56 #include "private/qabstractnetworkcache_p.h" |
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57 |
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58 #include <qbuffer.h> |
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59 #include <qhash.h> |
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60 #include <qtemporaryfile.h> |
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61 |
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62 QT_BEGIN_NAMESPACE |
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63 |
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64 class QFile; |
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65 |
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66 class QCacheItem |
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67 { |
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68 public: |
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69 QCacheItem() : file(0) |
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70 { |
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71 } |
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72 ~QCacheItem() |
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73 { |
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74 reset(); |
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75 } |
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76 |
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77 QNetworkCacheMetaData metaData; |
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78 QBuffer data; |
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79 QTemporaryFile *file; |
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80 inline qint64 size() const |
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81 { return file ? file->size() : data.size(); } |
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82 |
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83 inline void reset() { |
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84 metaData = QNetworkCacheMetaData(); |
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85 data.close(); |
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86 delete file; |
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87 file = 0; |
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88 } |
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89 void writeHeader(QFile *device) const; |
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90 void writeCompressedData(QFile *device) const; |
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91 bool read(QFile *device, bool readData); |
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92 |
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93 bool canCompress() const; |
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94 }; |
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95 |
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96 class QNetworkDiskCachePrivate : public QAbstractNetworkCachePrivate |
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97 { |
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98 public: |
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99 QNetworkDiskCachePrivate() |
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100 : QAbstractNetworkCachePrivate() |
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101 , maximumCacheSize(1024 * 1024 * 50) |
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102 , currentCacheSize(-1) |
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103 {} |
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104 |
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105 QByteArray generateId(const QUrl &url) const; |
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106 QString cacheFileName(const QUrl &url) const; |
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107 QString tmpCacheFileName() const; |
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108 bool removeFile(const QString &file); |
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109 void storeItem(QCacheItem *item); |
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110 |
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111 mutable QCacheItem lastItem; |
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112 QString cacheDirectory; |
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113 qint64 maximumCacheSize; |
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114 qint64 currentCacheSize; |
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115 |
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116 QHash<QIODevice*, QCacheItem*> inserting; |
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117 Q_DECLARE_PUBLIC(QNetworkDiskCache) |
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118 }; |
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119 |
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120 QT_END_NAMESPACE |
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121 |
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122 #endif // QNETWORKDISKCACHE_P_H |