Murat Kilivan / FATFileSystem

FAT file system

Dependents:   S25FL216K_FATFileSystem SDFileSystem

FATFileHandle.cpp@0:b864b021fc6d, 2014-12-23 (annotated)

Committer:
mkilivan
Date:
Tue Dec 23 21:37:54 2014 +0000
Revision:
0:b864b021fc6d
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mkilivan 0:b864b021fc6d 1 /* mbed Microcontroller Library
mkilivan 0:b864b021fc6d 2 * Copyright (c) 2006-2012 ARM Limited
mkilivan 0:b864b021fc6d 3 *
mkilivan 0:b864b021fc6d 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mkilivan 0:b864b021fc6d 5 * of this software and associated documentation files (the "Software"), to deal
mkilivan 0:b864b021fc6d 6 * in the Software without restriction, including without limitation the rights
mkilivan 0:b864b021fc6d 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mkilivan 0:b864b021fc6d 8 * copies of the Software, and to permit persons to whom the Software is
mkilivan 0:b864b021fc6d 9 * furnished to do so, subject to the following conditions:
mkilivan 0:b864b021fc6d 10 *
mkilivan 0:b864b021fc6d 11 * The above copyright notice and this permission notice shall be included in
mkilivan 0:b864b021fc6d 12 * all copies or substantial portions of the Software.
mkilivan 0:b864b021fc6d 13 *
mkilivan 0:b864b021fc6d 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mkilivan 0:b864b021fc6d 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mkilivan 0:b864b021fc6d 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mkilivan 0:b864b021fc6d 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mkilivan 0:b864b021fc6d 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mkilivan 0:b864b021fc6d 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mkilivan 0:b864b021fc6d 20 * SOFTWARE.
mkilivan 0:b864b021fc6d 21 */
mkilivan 0:b864b021fc6d 22 #include "ff.h"
mkilivan 0:b864b021fc6d 23 #include "ffconf.h"
mkilivan 0:b864b021fc6d 24 #include "mbed_debug.h"
mkilivan 0:b864b021fc6d 25
mkilivan 0:b864b021fc6d 26 #include "FATFileHandle.h"
mkilivan 0:b864b021fc6d 27
mkilivan 0:b864b021fc6d 28 FATFileHandle::FATFileHandle(FIL fh) {
mkilivan 0:b864b021fc6d 29 _fh = fh;
mkilivan 0:b864b021fc6d 30 }
mkilivan 0:b864b021fc6d 31
mkilivan 0:b864b021fc6d 32 int FATFileHandle::close() {
mkilivan 0:b864b021fc6d 33 int retval = f_close(&_fh);
mkilivan 0:b864b021fc6d 34 delete this;
mkilivan 0:b864b021fc6d 35 return retval;
mkilivan 0:b864b021fc6d 36 }
mkilivan 0:b864b021fc6d 37
mkilivan 0:b864b021fc6d 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
mkilivan 0:b864b021fc6d 39 UINT n;
mkilivan 0:b864b021fc6d 40 FRESULT res = f_write(&_fh, buffer, length, &n);
mkilivan 0:b864b021fc6d 41 if (res) {
mkilivan 0:b864b021fc6d 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
mkilivan 0:b864b021fc6d 43 return -1;
mkilivan 0:b864b021fc6d 44 }
mkilivan 0:b864b021fc6d 45 return n;
mkilivan 0:b864b021fc6d 46 }
mkilivan 0:b864b021fc6d 47
mkilivan 0:b864b021fc6d 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
mkilivan 0:b864b021fc6d 49 debug_if(FFS_DBG, "read(%d)\n", length);
mkilivan 0:b864b021fc6d 50 UINT n;
mkilivan 0:b864b021fc6d 51 FRESULT res = f_read(&_fh, buffer, length, &n);
mkilivan 0:b864b021fc6d 52 if (res) {
mkilivan 0:b864b021fc6d 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
mkilivan 0:b864b021fc6d 54 return -1;
mkilivan 0:b864b021fc6d 55 }
mkilivan 0:b864b021fc6d 56 return n;
mkilivan 0:b864b021fc6d 57 }
mkilivan 0:b864b021fc6d 58
mkilivan 0:b864b021fc6d 59 int FATFileHandle::isatty() {
mkilivan 0:b864b021fc6d 60 return 0;
mkilivan 0:b864b021fc6d 61 }
mkilivan 0:b864b021fc6d 62
mkilivan 0:b864b021fc6d 63 off_t FATFileHandle::lseek(off_t position, int whence) {
mkilivan 0:b864b021fc6d 64 if (whence == SEEK_END) {
mkilivan 0:b864b021fc6d 65 position += _fh.fsize;
mkilivan 0:b864b021fc6d 66 } else if(whence==SEEK_CUR) {
mkilivan 0:b864b021fc6d 67 position += _fh.fptr;
mkilivan 0:b864b021fc6d 68 }
mkilivan 0:b864b021fc6d 69 FRESULT res = f_lseek(&_fh, position);
mkilivan 0:b864b021fc6d 70 if (res) {
mkilivan 0:b864b021fc6d 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
mkilivan 0:b864b021fc6d 72 return -1;
mkilivan 0:b864b021fc6d 73 } else {
mkilivan 0:b864b021fc6d 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
mkilivan 0:b864b021fc6d 75 return _fh.fptr;
mkilivan 0:b864b021fc6d 76 }
mkilivan 0:b864b021fc6d 77 }
mkilivan 0:b864b021fc6d 78
mkilivan 0:b864b021fc6d 79 int FATFileHandle::fsync() {
mkilivan 0:b864b021fc6d 80 FRESULT res = f_sync(&_fh);
mkilivan 0:b864b021fc6d 81 if (res) {
mkilivan 0:b864b021fc6d 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
mkilivan 0:b864b021fc6d 83 return -1;
mkilivan 0:b864b021fc6d 84 }
mkilivan 0:b864b021fc6d 85 return 0;
mkilivan 0:b864b021fc6d 86 }
mkilivan 0:b864b021fc6d 87
mkilivan 0:b864b021fc6d 88 off_t FATFileHandle::flen() {
mkilivan 0:b864b021fc6d 89 return _fh.fsize;
mkilivan 0:b864b021fc6d 90 }