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50 | |
51 | #ifndef FILEMANAGER_H |
52 | #define FILEMANAGER_H |
53 | |
54 | #include <QBitArray> |
55 | #include <QList> |
56 | #include <QMutex> |
57 | #include <QThread> |
58 | #include <QWaitCondition> |
59 | |
60 | #include "metainfo.h" |
61 | |
62 | QT_BEGIN_NAMESPACE |
63 | class QByteArray; |
64 | class QFile; |
65 | class QTimerEvent; |
66 | QT_END_NAMESPACE |
67 | |
68 | class FileManager : public QThread |
69 | { |
70 | Q_OBJECT |
71 | |
72 | public: |
73 | FileManager(QObject *parent = nullptr); |
74 | virtual ~FileManager(); |
75 | |
76 | inline void setMetaInfo(const MetaInfo &info) { metaInfo = info; } |
77 | inline void setDestinationFolder(const QString &directory) { destinationPath = directory; } |
78 | |
79 | int read(int pieceIndex, int offset, int length); |
80 | void write(int pieceIndex, int offset, const QByteArray &data); |
81 | void verifyPiece(int pieceIndex); |
82 | inline qint64 totalSize() const { return totalLength; } |
83 | |
84 | inline int pieceCount() const { return numPieces; } |
85 | int pieceLengthAt(int pieceIndex) const; |
86 | |
87 | QBitArray completedPieces() const; |
88 | void setCompletedPieces(const QBitArray &pieces); |
89 | |
90 | QString errorString() const; |
91 | |
92 | public slots: |
93 | void startDataVerification(); |
94 | |
95 | signals: |
96 | void dataRead(int id, int pieceIndex, int offset, const QByteArray &data); |
97 | void error(); |
98 | void verificationProgress(int percent); |
99 | void verificationDone(); |
100 | void pieceVerified(int pieceIndex, bool verified); |
101 | |
102 | protected: |
103 | void run() override; |
104 | |
105 | private slots: |
106 | bool verifySinglePiece(int pieceIndex); |
107 | void wakeUp(); |
108 | |
109 | private: |
110 | bool generateFiles(); |
111 | QByteArray readBlock(int pieceIndex, int offset, int length); |
112 | bool writeBlock(int pieceIndex, int offset, const QByteArray &data); |
113 | void verifyFileContents(); |
114 | |
115 | struct WriteRequest { |
116 | int pieceIndex; |
117 | int offset; |
118 | QByteArray data; |
119 | }; |
120 | struct ReadRequest { |
121 | int pieceIndex; |
122 | int offset; |
123 | int length; |
124 | int id; |
125 | }; |
126 | |
127 | QString errString; |
128 | QString destinationPath; |
129 | MetaInfo metaInfo; |
130 | QList<QFile *> files; |
131 | QList<QByteArray> sha1s; |
132 | QBitArray verifiedPieces; |
133 | |
134 | bool newFile; |
135 | int pieceLength; |
136 | qint64 totalLength; |
137 | int numPieces; |
138 | int readId; |
139 | bool startVerification; |
140 | bool quit; |
141 | bool wokeUp; |
142 | |
143 | QList<WriteRequest> writeRequests; |
144 | QList<ReadRequest> readRequests; |
145 | QList<int> pendingVerificationRequests; |
146 | QList<int> newPendingVerificationRequests; |
147 | QList<qint64> fileSizes; |
148 | |
149 | mutable QMutex mutex; |
150 | mutable QWaitCondition cond; |
151 | }; |
152 | |
153 | #endif |
154 | |