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
|
/* Copyright (C) 2025 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* simple POSIX file wrapper.
*/
#ifndef INCLUDED_FILE
#define INCLUDED_FILE
#include "lib/os_path.h"
#include "lib/status.h"
#include <memory>
namespace ERR
{
const Status FILE_ACCESS = -110300;
const Status FILE_NOT_FOUND = -110301;
}
// @param oflag: either O_RDONLY or O_WRONLY (in which case O_CREAT and
// O_TRUNC are added), plus O_DIRECT if aio is desired
// @return file descriptor or a negative Status
Status FileOpen(const OsPath& pathname, int oflag);
void FileClose(int& fd);
class File
{
public:
File()
: m_PathName(), m_FileDescriptor(-1)
{
}
File(const OsPath& pathname, int oflag)
{
THROW_STATUS_IF_ERR(Open(pathname, oflag));
}
~File()
{
Close();
}
Status Open(const OsPath& pathName, int openFlag)
{
Status ret = FileOpen(pathName, openFlag);
RETURN_STATUS_IF_ERR(ret);
m_PathName = pathName;
m_FileDescriptor = static_cast<int>(ret);
m_OpenFlag = openFlag;
return INFO::OK;
}
void Close()
{
FileClose(m_FileDescriptor);
}
const OsPath& Pathname() const
{
return m_PathName;
}
int Descriptor() const
{
return m_FileDescriptor;
}
int Flags() const
{
return m_OpenFlag;
}
private:
OsPath m_PathName;
int m_FileDescriptor;
int m_OpenFlag;
};
typedef std::shared_ptr<File> PFile;
#endif // #ifndef INCLUDED_FILE
|
