1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef FILEMANAGER_H
#define FILEMANAGER_H
#include <QBitArray>
#include <QList>
#include <QMutex>
#include <QThread>
#include <QWaitCondition>
#include "metainfo.h"
QT_BEGIN_NAMESPACE
class QByteArray;
class QFile;
class QTimerEvent;
QT_END_NAMESPACE
class FileManager : public QThread
{
Q_OBJECT
public:
FileManager(QObject *parent = 0);
virtual ~FileManager();
inline void setMetaInfo(const MetaInfo &info) { metaInfo = info; }
inline void setDestinationFolder(const QString &directory) { destinationPath = directory; }
int read(int pieceIndex, int offset, int length);
void write(int pieceIndex, int offset, const QByteArray &data);
void verifyPiece(int pieceIndex);
inline qint64 totalSize() const { return totalLength; }
inline int pieceCount() const { return numPieces; }
int pieceLengthAt(int pieceIndex) const;
QBitArray completedPieces() const;
void setCompletedPieces(const QBitArray &pieces);
QString errorString() const;
public slots:
void startDataVerification();
signals:
void dataRead(int id, int pieceIndex, int offset, const QByteArray &data);
void error();
void verificationProgress(int percent);
void verificationDone();
void pieceVerified(int pieceIndex, bool verified);
protected:
void run();
private slots:
bool verifySinglePiece(int pieceIndex);
void wakeUp();
private:
bool generateFiles();
QByteArray readBlock(int pieceIndex, int offset, int length);
bool writeBlock(int pieceIndex, int offset, const QByteArray &data);
void verifyFileContents();
struct WriteRequest {
int pieceIndex;
int offset;
QByteArray data;
};
struct ReadRequest {
int pieceIndex;
int offset;
int length;
int id;
};
QString errString;
QString destinationPath;
MetaInfo metaInfo;
QList<QFile *> files;
QList<QByteArray> sha1s;
QBitArray verifiedPieces;
bool newFile;
int pieceLength;
qint64 totalLength;
int numPieces;
int readId;
bool startVerification;
bool quit;
bool wokeUp;
QList<WriteRequest> writeRequests;
QList<ReadRequest> readRequests;
QList<int> pendingVerificationRequests;
QList<int> newPendingVerificationRequests;
QList<qint64> fileSizes;
mutable QMutex mutex;
mutable QWaitCondition cond;
};
#endif
|
