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
145
146
147
148
149
150
|
/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef BTBENCODER_H
#define BTBENCODER_H
#include <util/file.h>
namespace bt
{
class File;
/**
* @author Joris Guisson
*
* Interface for classes which wish to receive the output from a BEncoder.
*/
class BEncoderOutput
{
public:
virtual ~BEncoderOutput() {}
/**
* Write a string of characters.
* @param str The string
* @param len The length of the string
*/
virtual void write(const char* str,Uint32 len) = 0;
};
/**
* Writes the output of a bencoder to a file
*/
class BEncoderFileOutput : public BEncoderOutput
{
File* fptr;
public:
BEncoderFileOutput(File* fptr);
void write(const char* str,Uint32 len);
};
/**
* Write the output of a BEncoder to a QByteArray
*/
class BEncoderBufferOutput : public BEncoderOutput
{
QByteArray & data;
Uint32 ptr;
public:
BEncoderBufferOutput(QByteArray & data);
void write(const char* str,Uint32 len);
};
/**
* @author Joris Guisson
* @brief Helper class to b-encode stuff.
*
* This class b-encodes data. For more details about b-encoding, see
* the BitTorrent protocol docs. The data gets written to a BEncoderOutput
* thing.
*/
class BEncoder
{
BEncoderOutput* out;
bool del;
public:
/**
* Constructor, output gets written to a file.
* @param fptr The File to write to
*/
BEncoder(File* fptr);
/**
* Constructor, output gets written to a BEncoderOutput object.
* @param out The BEncoderOutput
*/
BEncoder(BEncoderOutput* out);
virtual ~BEncoder();
/**
* Begin a dictionary.Should have a corresponding end call.
*/
void beginDict();
/**
* Begin a list. Should have a corresponding end call.
*/
void beginList();
/**
* Write an int
* @param val
*/
void write(Uint32 val);
/**
* Write an int64
* @param val
*/
void write(Uint64 val);
/**
* Write a string
* @param str
*/
void write(const QString & str);
/**
* Write a QByteArray
* @param data
*/
void write(const QByteArray & data);
/**
* Write a data array
* @param data
* @param size of data
*/
void write(const Uint8* data,Uint32 size);
/**
* End a beginDict or beginList call.
*/
void end();
};
}
#endif
|
