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
|
/** \file MemFile.h
** \date 2005-04-25
** \author grymse@alhem.net
**/
/*
Copyright (C) 2004-2007 Anders Hedstrom
This library is made available under the terms of the GNU GPL.
If you would like to use this library in a closed-source application,
a separate license agreement is available. For information about
the closed-source license agreement for the C++ sockets library,
please visit http://www.alhem.net/Sockets/license.html and/or
email license@alhem.net.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _SOCKETS_MemFile_H
#define _SOCKETS_MemFile_H
#include "sockets-config.h"
#include <map>
#include "IFile.h"
#define BLOCKSIZE 32768
#ifdef SOCKETS_NAMESPACE
namespace SOCKETS_NAMESPACE {
#endif
/** Implements a memory file.
\ingroup file */
class MemFile : public IFile
{
public:
/** File block structure.
\ingroup file */
struct block_t {
block_t() : next(NULL) {}
struct block_t *next;
char data[BLOCKSIZE];
};
public:
MemFile();
MemFile(const std::string& path);
~MemFile();
bool fopen(const std::string& path, const std::string& mode);
void fclose();
size_t fread(char *ptr, size_t size, size_t nmemb) const;
size_t fwrite(const char *ptr, size_t size, size_t nmemb);
char *fgets(char *s, int size) const;
void fprintf(const char *format, ...);
off_t size() const;
bool eof() const;
void reset_read() const;
void reset_write();
private:
MemFile(const MemFile& ) {} // copy constructor
MemFile& operator=(const MemFile& ) { return *this; } // assignment operator
static std::map<std::string,block_t *> m_files;
std::string m_path;
bool m_temporary;
block_t *m_base;
mutable block_t *m_current_read;
block_t *m_current_write;
int m_current_write_nr;
mutable size_t m_read_ptr;
size_t m_write_ptr;
mutable bool m_b_read_caused_eof;
};
#ifdef SOCKETS_NAMESPACE
}
#endif
#endif // _SOCKETS_MemFile_H
|
