-
Notifications
You must be signed in to change notification settings - Fork 5
Expand file tree
/
Copy pathringbuffer.h
More file actions
80 lines (76 loc) · 2.84 KB
/
ringbuffer.h
File metadata and controls
80 lines (76 loc) · 2.84 KB
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
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
**
****************************************************************************/
#ifndef RINGBUFFER_H
#define RINGBUFFER_H
#include <QList>
#include <QByteArray>
#include "utilsexport.h"
class UTILS_EXPORT RingBuffer
{
public:
RingBuffer(int growth = 4096, int maxSize = -1);
bool isEmpty() const;
int size() const;
int maximumSize() const;
void clear();
void truncate(int pos);
void chop(int bytes);
int skip(int length);
int write(QByteArray data);
int write(const char *data, int maxLength);
QByteArray read(int maxLength);
int read(char *data, int maxLength);
bool canReadLine() const;
int readLine(char *data, int maxLength);
private:
void free(int bytes);
char *reserve(int bytes);
int indexOf(char c) const;
int nextDataBlockSize() const;
const char *readPointer() const;
QByteArray peek(int maxLength) const;
private:
int head, tail;
int tailBuffer;
int basicBlockSize;
int bufferSize;
int maxBufferSize;
QList<QByteArray> buffers;
};
#endif // RINGBUFFER_H