Ahmad Fauzy Mohd Aris / SDFileSystem

FATFileSystem/FATFileHandle.cpp@0:5ffb234d134c, 2016-04-27 (annotated)

Committer:
el14afma
Date:
Wed Apr 27 06:51:28 2016 +0000
Revision:
0:5ffb234d134c
-Save highscore and settings on a sd card

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el14afma 0:5ffb234d134c 1 /* mbed Microcontroller Library
el14afma 0:5ffb234d134c 2 * Copyright (c) 2006-2012 ARM Limited
el14afma 0:5ffb234d134c 3 *
el14afma 0:5ffb234d134c 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
el14afma 0:5ffb234d134c 5 * of this software and associated documentation files (the "Software"), to deal
el14afma 0:5ffb234d134c 6 * in the Software without restriction, including without limitation the rights
el14afma 0:5ffb234d134c 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
el14afma 0:5ffb234d134c 8 * copies of the Software, and to permit persons to whom the Software is
el14afma 0:5ffb234d134c 9 * furnished to do so, subject to the following conditions:
el14afma 0:5ffb234d134c 10 *
el14afma 0:5ffb234d134c 11 * The above copyright notice and this permission notice shall be included in
el14afma 0:5ffb234d134c 12 * all copies or substantial portions of the Software.
el14afma 0:5ffb234d134c 13 *
el14afma 0:5ffb234d134c 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
el14afma 0:5ffb234d134c 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
el14afma 0:5ffb234d134c 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
el14afma 0:5ffb234d134c 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
el14afma 0:5ffb234d134c 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
el14afma 0:5ffb234d134c 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
el14afma 0:5ffb234d134c 20 * SOFTWARE.
el14afma 0:5ffb234d134c 21 */
el14afma 0:5ffb234d134c 22 #include "ff.h"
el14afma 0:5ffb234d134c 23 #include "ffconf.h"
el14afma 0:5ffb234d134c 24 #include "mbed_debug.h"
el14afma 0:5ffb234d134c 25
el14afma 0:5ffb234d134c 26 #include "FATFileHandle.h"
el14afma 0:5ffb234d134c 27
el14afma 0:5ffb234d134c 28 FATFileHandle::FATFileHandle(FIL fh) {
el14afma 0:5ffb234d134c 29 _fh = fh;
el14afma 0:5ffb234d134c 30 }
el14afma 0:5ffb234d134c 31
el14afma 0:5ffb234d134c 32 int FATFileHandle::close() {
el14afma 0:5ffb234d134c 33 int retval = f_close(&_fh);
el14afma 0:5ffb234d134c 34 delete this;
el14afma 0:5ffb234d134c 35 return retval;
el14afma 0:5ffb234d134c 36 }
el14afma 0:5ffb234d134c 37
el14afma 0:5ffb234d134c 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
el14afma 0:5ffb234d134c 39 UINT n;
el14afma 0:5ffb234d134c 40 FRESULT res = f_write(&_fh, buffer, length, &n);
el14afma 0:5ffb234d134c 41 if (res) {
el14afma 0:5ffb234d134c 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
el14afma 0:5ffb234d134c 43 return -1;
el14afma 0:5ffb234d134c 44 }
el14afma 0:5ffb234d134c 45 return n;
el14afma 0:5ffb234d134c 46 }
el14afma 0:5ffb234d134c 47
el14afma 0:5ffb234d134c 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
el14afma 0:5ffb234d134c 49 debug_if(FFS_DBG, "read(%d)\n", length);
el14afma 0:5ffb234d134c 50 UINT n;
el14afma 0:5ffb234d134c 51 FRESULT res = f_read(&_fh, buffer, length, &n);
el14afma 0:5ffb234d134c 52 if (res) {
el14afma 0:5ffb234d134c 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
el14afma 0:5ffb234d134c 54 return -1;
el14afma 0:5ffb234d134c 55 }
el14afma 0:5ffb234d134c 56 return n;
el14afma 0:5ffb234d134c 57 }
el14afma 0:5ffb234d134c 58
el14afma 0:5ffb234d134c 59 int FATFileHandle::isatty() {
el14afma 0:5ffb234d134c 60 return 0;
el14afma 0:5ffb234d134c 61 }
el14afma 0:5ffb234d134c 62
el14afma 0:5ffb234d134c 63 off_t FATFileHandle::lseek(off_t position, int whence) {
el14afma 0:5ffb234d134c 64 if (whence == SEEK_END) {
el14afma 0:5ffb234d134c 65 position += _fh.fsize;
el14afma 0:5ffb234d134c 66 } else if(whence==SEEK_CUR) {
el14afma 0:5ffb234d134c 67 position += _fh.fptr;
el14afma 0:5ffb234d134c 68 }
el14afma 0:5ffb234d134c 69 FRESULT res = f_lseek(&_fh, position);
el14afma 0:5ffb234d134c 70 if (res) {
el14afma 0:5ffb234d134c 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
el14afma 0:5ffb234d134c 72 return -1;
el14afma 0:5ffb234d134c 73 } else {
el14afma 0:5ffb234d134c 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
el14afma 0:5ffb234d134c 75 return _fh.fptr;
el14afma 0:5ffb234d134c 76 }
el14afma 0:5ffb234d134c 77 }
el14afma 0:5ffb234d134c 78
el14afma 0:5ffb234d134c 79 int FATFileHandle::fsync() {
el14afma 0:5ffb234d134c 80 FRESULT res = f_sync(&_fh);
el14afma 0:5ffb234d134c 81 if (res) {
el14afma 0:5ffb234d134c 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
el14afma 0:5ffb234d134c 83 return -1;
el14afma 0:5ffb234d134c 84 }
el14afma 0:5ffb234d134c 85 return 0;
el14afma 0:5ffb234d134c 86 }
el14afma 0:5ffb234d134c 87
el14afma 0:5ffb234d134c 88 off_t FATFileHandle::flen() {
el14afma 0:5ffb234d134c 89 return _fh.fsize;
el14afma 0:5ffb234d134c 90 }