ECE 2035 TA / SDFileSystem

SDFileSystem Library

Dependents:   ECE2035_SUM17_Project

FATFileSystem/FATDirHandle.cpp@0:71be9322f4eb, 2017-07-14 (annotated)

Committer:
kennyainny
Date:
Fri Jul 14 21:42:13 2017 +0000
Revision:
0:71be9322f4eb
no changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kennyainny 0:71be9322f4eb 1 /* mbed Microcontroller Library
kennyainny 0:71be9322f4eb 2 * Copyright (c) 2006-2012 ARM Limited
kennyainny 0:71be9322f4eb 3 *
kennyainny 0:71be9322f4eb 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
kennyainny 0:71be9322f4eb 5 * of this software and associated documentation files (the "Software"), to deal
kennyainny 0:71be9322f4eb 6 * in the Software without restriction, including without limitation the rights
kennyainny 0:71be9322f4eb 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
kennyainny 0:71be9322f4eb 8 * copies of the Software, and to permit persons to whom the Software is
kennyainny 0:71be9322f4eb 9 * furnished to do so, subject to the following conditions:
kennyainny 0:71be9322f4eb 10 *
kennyainny 0:71be9322f4eb 11 * The above copyright notice and this permission notice shall be included in
kennyainny 0:71be9322f4eb 12 * all copies or substantial portions of the Software.
kennyainny 0:71be9322f4eb 13 *
kennyainny 0:71be9322f4eb 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
kennyainny 0:71be9322f4eb 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
kennyainny 0:71be9322f4eb 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
kennyainny 0:71be9322f4eb 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
kennyainny 0:71be9322f4eb 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kennyainny 0:71be9322f4eb 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
kennyainny 0:71be9322f4eb 20 * SOFTWARE.
kennyainny 0:71be9322f4eb 21 */
kennyainny 0:71be9322f4eb 22 #include <string.h>
kennyainny 0:71be9322f4eb 23 #include "ff.h"
kennyainny 0:71be9322f4eb 24 #include "FATDirHandle.h"
kennyainny 0:71be9322f4eb 25
kennyainny 0:71be9322f4eb 26 using namespace mbed;
kennyainny 0:71be9322f4eb 27
kennyainny 0:71be9322f4eb 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
kennyainny 0:71be9322f4eb 29 dir = the_dir;
kennyainny 0:71be9322f4eb 30 }
kennyainny 0:71be9322f4eb 31
kennyainny 0:71be9322f4eb 32 int FATDirHandle::closedir() {
kennyainny 0:71be9322f4eb 33 delete this;
kennyainny 0:71be9322f4eb 34 return 0;
kennyainny 0:71be9322f4eb 35 }
kennyainny 0:71be9322f4eb 36
kennyainny 0:71be9322f4eb 37 struct dirent *FATDirHandle::readdir() {
kennyainny 0:71be9322f4eb 38 FILINFO finfo;
kennyainny 0:71be9322f4eb 39
kennyainny 0:71be9322f4eb 40 #if _USE_LFN
kennyainny 0:71be9322f4eb 41 finfo.lfname = cur_entry.d_name;
kennyainny 0:71be9322f4eb 42 finfo.lfsize = sizeof(cur_entry.d_name);
kennyainny 0:71be9322f4eb 43 #endif // _USE_LFN
kennyainny 0:71be9322f4eb 44
kennyainny 0:71be9322f4eb 45 FRESULT res = f_readdir(&dir, &finfo);
kennyainny 0:71be9322f4eb 46
kennyainny 0:71be9322f4eb 47 #if _USE_LFN
kennyainny 0:71be9322f4eb 48 if(res != 0 || finfo.fname[0]==0) {
kennyainny 0:71be9322f4eb 49 return NULL;
kennyainny 0:71be9322f4eb 50 } else {
kennyainny 0:71be9322f4eb 51 if(cur_entry.d_name[0]==0) {
kennyainny 0:71be9322f4eb 52 // No long filename so use short filename.
kennyainny 0:71be9322f4eb 53 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
kennyainny 0:71be9322f4eb 54 }
kennyainny 0:71be9322f4eb 55 return &cur_entry;
kennyainny 0:71be9322f4eb 56 }
kennyainny 0:71be9322f4eb 57 #else
kennyainny 0:71be9322f4eb 58 if(res != 0 || finfo.fname[0]==0) {
kennyainny 0:71be9322f4eb 59 return NULL;
kennyainny 0:71be9322f4eb 60 } else {
kennyainny 0:71be9322f4eb 61 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
kennyainny 0:71be9322f4eb 62 return &cur_entry;
kennyainny 0:71be9322f4eb 63 }
kennyainny 0:71be9322f4eb 64 #endif /* _USE_LFN */
kennyainny 0:71be9322f4eb 65 }
kennyainny 0:71be9322f4eb 66
kennyainny 0:71be9322f4eb 67 void FATDirHandle::rewinddir() {
kennyainny 0:71be9322f4eb 68 dir.index = 0;
kennyainny 0:71be9322f4eb 69 }
kennyainny 0:71be9322f4eb 70
kennyainny 0:71be9322f4eb 71 off_t FATDirHandle::telldir() {
kennyainny 0:71be9322f4eb 72 return dir.index;
kennyainny 0:71be9322f4eb 73 }
kennyainny 0:71be9322f4eb 74
kennyainny 0:71be9322f4eb 75 void FATDirHandle::seekdir(off_t location) {
kennyainny 0:71be9322f4eb 76 dir.index = location;
kennyainny 0:71be9322f4eb 77 }
kennyainny 0:71be9322f4eb 78