Kevin Abraham / Mbed 2 deprecated MazeRunner_Fall2017

ECE 2036 Project

Dependencies:   mbed wave_player 4DGL-uLCD-SE

SDFileSystem/FATFileSystem/FATFileHandle.cpp@2:2042f29de6b7, 2019-11-21 (annotated)

Committer:
abraha2d
Date:
Thu Nov 21 16:10:57 2019 +0000
Revision:
2:2042f29de6b7
Parent:
0:cf4396614a79 
Because other peeps is wanting dis...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rconnorlawson 0:cf4396614a79 1 /* mbed Microcontroller Library
rconnorlawson 0:cf4396614a79 2 * Copyright (c) 2006-2012 ARM Limited
rconnorlawson 0:cf4396614a79 3 *
rconnorlawson 0:cf4396614a79 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
rconnorlawson 0:cf4396614a79 5 * of this software and associated documentation files (the "Software"), to deal
rconnorlawson 0:cf4396614a79 6 * in the Software without restriction, including without limitation the rights
rconnorlawson 0:cf4396614a79 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
rconnorlawson 0:cf4396614a79 8 * copies of the Software, and to permit persons to whom the Software is
rconnorlawson 0:cf4396614a79 9 * furnished to do so, subject to the following conditions:
rconnorlawson 0:cf4396614a79 10 *
rconnorlawson 0:cf4396614a79 11 * The above copyright notice and this permission notice shall be included in
rconnorlawson 0:cf4396614a79 12 * all copies or substantial portions of the Software.
rconnorlawson 0:cf4396614a79 13 *
rconnorlawson 0:cf4396614a79 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
rconnorlawson 0:cf4396614a79 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
rconnorlawson 0:cf4396614a79 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
rconnorlawson 0:cf4396614a79 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
rconnorlawson 0:cf4396614a79 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
rconnorlawson 0:cf4396614a79 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
rconnorlawson 0:cf4396614a79 20 * SOFTWARE.
rconnorlawson 0:cf4396614a79 21 */
rconnorlawson 0:cf4396614a79 22 #include "ff.h"
rconnorlawson 0:cf4396614a79 23 #include "ffconf.h"
rconnorlawson 0:cf4396614a79 24 #include "mbed_debug.h"
rconnorlawson 0:cf4396614a79 25
rconnorlawson 0:cf4396614a79 26 #include "FATFileHandle.h"
rconnorlawson 0:cf4396614a79 27
rconnorlawson 0:cf4396614a79 28 FATFileHandle::FATFileHandle(FIL fh) {
rconnorlawson 0:cf4396614a79 29 _fh = fh;
rconnorlawson 0:cf4396614a79 30 }
rconnorlawson 0:cf4396614a79 31
rconnorlawson 0:cf4396614a79 32 int FATFileHandle::close() {
rconnorlawson 0:cf4396614a79 33 int retval = f_close(&_fh);
rconnorlawson 0:cf4396614a79 34 delete this;
rconnorlawson 0:cf4396614a79 35 return retval;
rconnorlawson 0:cf4396614a79 36 }
rconnorlawson 0:cf4396614a79 37
rconnorlawson 0:cf4396614a79 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
rconnorlawson 0:cf4396614a79 39 UINT n;
rconnorlawson 0:cf4396614a79 40 FRESULT res = f_write(&_fh, buffer, length, &n);
rconnorlawson 0:cf4396614a79 41 if (res) {
rconnorlawson 0:cf4396614a79 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
rconnorlawson 0:cf4396614a79 43 return -1;
rconnorlawson 0:cf4396614a79 44 }
rconnorlawson 0:cf4396614a79 45 return n;
rconnorlawson 0:cf4396614a79 46 }
rconnorlawson 0:cf4396614a79 47
rconnorlawson 0:cf4396614a79 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
rconnorlawson 0:cf4396614a79 49 debug_if(FFS_DBG, "read(%d)\n", length);
rconnorlawson 0:cf4396614a79 50 UINT n;
rconnorlawson 0:cf4396614a79 51 FRESULT res = f_read(&_fh, buffer, length, &n);
rconnorlawson 0:cf4396614a79 52 if (res) {
rconnorlawson 0:cf4396614a79 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
rconnorlawson 0:cf4396614a79 54 return -1;
rconnorlawson 0:cf4396614a79 55 }
rconnorlawson 0:cf4396614a79 56 return n;
rconnorlawson 0:cf4396614a79 57 }
rconnorlawson 0:cf4396614a79 58
rconnorlawson 0:cf4396614a79 59 int FATFileHandle::isatty() {
rconnorlawson 0:cf4396614a79 60 return 0;
rconnorlawson 0:cf4396614a79 61 }
rconnorlawson 0:cf4396614a79 62
rconnorlawson 0:cf4396614a79 63 off_t FATFileHandle::lseek(off_t position, int whence) {
rconnorlawson 0:cf4396614a79 64 if (whence == SEEK_END) {
rconnorlawson 0:cf4396614a79 65 position += _fh.fsize;
rconnorlawson 0:cf4396614a79 66 } else if(whence==SEEK_CUR) {
rconnorlawson 0:cf4396614a79 67 position += _fh.fptr;
rconnorlawson 0:cf4396614a79 68 }
rconnorlawson 0:cf4396614a79 69 FRESULT res = f_lseek(&_fh, position);
rconnorlawson 0:cf4396614a79 70 if (res) {
rconnorlawson 0:cf4396614a79 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
rconnorlawson 0:cf4396614a79 72 return -1;
rconnorlawson 0:cf4396614a79 73 } else {
rconnorlawson 0:cf4396614a79 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
rconnorlawson 0:cf4396614a79 75 return _fh.fptr;
rconnorlawson 0:cf4396614a79 76 }
rconnorlawson 0:cf4396614a79 77 }
rconnorlawson 0:cf4396614a79 78
rconnorlawson 0:cf4396614a79 79 int FATFileHandle::fsync() {
rconnorlawson 0:cf4396614a79 80 FRESULT res = f_sync(&_fh);
rconnorlawson 0:cf4396614a79 81 if (res) {
rconnorlawson 0:cf4396614a79 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
rconnorlawson 0:cf4396614a79 83 return -1;
rconnorlawson 0:cf4396614a79 84 }
rconnorlawson 0:cf4396614a79 85 return 0;
rconnorlawson 0:cf4396614a79 86 }
rconnorlawson 0:cf4396614a79 87
rconnorlawson 0:cf4396614a79 88 off_t FATFileHandle::flen() {
rconnorlawson 0:cf4396614a79 89 return _fh.fsize;
rconnorlawson 0:cf4396614a79 90 }