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
|
/* mbed Microcontroller Library
* Copyright (c) 2006-2012 ARM Limited
*
* 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.
*/
#include "ff.h"
#include "ffconf.h"
#include "mbed_debug.h"
#include "FATFileHandle.h"
FATFileHandle::FATFileHandle(FIL fh) {
_fh = fh;
}
int FATFileHandle::close() {
int retval = f_close(&_fh);
delete this;
return retval;
}
ssize_t FATFileHandle::write(const void* buffer, size_t length) {
UINT n;
FRESULT res = f_write(&_fh, buffer, length, &n);
if (res) {
debug_if(FFS_DBG, "f_write() failed: %d", res);
return -1;
}
return n;
}
ssize_t FATFileHandle::read(void* buffer, size_t length) {
debug_if(FFS_DBG, "read(%d)\n", length);
UINT n;
FRESULT res = f_read(&_fh, buffer, length, &n);
if (res) {
debug_if(FFS_DBG, "f_read() failed: %d\n", res);
return -1;
}
return n;
}
int FATFileHandle::isatty() {
return 0;
}
off_t FATFileHandle::lseek(off_t position, int whence) {
if (whence == SEEK_END) {
position += _fh.fsize;
} else if(whence==SEEK_CUR) {
position += _fh.fptr;
}
FRESULT res = f_lseek(&_fh, position);
if (res) {
debug_if(FFS_DBG, "lseek failed: %d\n", res);
return -1;
} else {
debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
return _fh.fptr;
}
}
int FATFileHandle::fsync() {
FRESULT res = f_sync(&_fh);
if (res) {
debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
return -1;
}
return 0;
}
off_t FATFileHandle::flen() {
return _fh.fsize;
}
|
