Murat Kilivan / FATFileSystem

FAT file system

Dependents:   S25FL216K_FATFileSystem SDFileSystem

FATDirHandle.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?

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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 <string.h>
mkilivan 0:b864b021fc6d 23 #include "ff.h"
mkilivan 0:b864b021fc6d 24 #include "FATDirHandle.h"
mkilivan 0:b864b021fc6d 25
mkilivan 0:b864b021fc6d 26 using namespace mbed;
mkilivan 0:b864b021fc6d 27
mkilivan 0:b864b021fc6d 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
mkilivan 0:b864b021fc6d 29 dir = the_dir;
mkilivan 0:b864b021fc6d 30 }
mkilivan 0:b864b021fc6d 31
mkilivan 0:b864b021fc6d 32 int FATDirHandle::closedir() {
mkilivan 0:b864b021fc6d 33 delete this;
mkilivan 0:b864b021fc6d 34 return 0;
mkilivan 0:b864b021fc6d 35 }
mkilivan 0:b864b021fc6d 36
mkilivan 0:b864b021fc6d 37 struct dirent *FATDirHandle::readdir() {
mkilivan 0:b864b021fc6d 38 FILINFO finfo;
mkilivan 0:b864b021fc6d 39
mkilivan 0:b864b021fc6d 40 #if _USE_LFN
mkilivan 0:b864b021fc6d 41 finfo.lfname = cur_entry.d_name;
mkilivan 0:b864b021fc6d 42 finfo.lfsize = sizeof(cur_entry.d_name);
mkilivan 0:b864b021fc6d 43 #endif // _USE_LFN
mkilivan 0:b864b021fc6d 44
mkilivan 0:b864b021fc6d 45 FRESULT res = f_readdir(&dir, &finfo);
mkilivan 0:b864b021fc6d 46
mkilivan 0:b864b021fc6d 47 #if _USE_LFN
mkilivan 0:b864b021fc6d 48 if(res != 0 || finfo.fname[0]==0) {
mkilivan 0:b864b021fc6d 49 return NULL;
mkilivan 0:b864b021fc6d 50 } else {
mkilivan 0:b864b021fc6d 51 if(cur_entry.d_name[0]==0) {
mkilivan 0:b864b021fc6d 52 // No long filename so use short filename.
mkilivan 0:b864b021fc6d 53 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
mkilivan 0:b864b021fc6d 54 }
mkilivan 0:b864b021fc6d 55 return &cur_entry;
mkilivan 0:b864b021fc6d 56 }
mkilivan 0:b864b021fc6d 57 #else
mkilivan 0:b864b021fc6d 58 if(res != 0 || finfo.fname[0]==0) {
mkilivan 0:b864b021fc6d 59 return NULL;
mkilivan 0:b864b021fc6d 60 } else {
mkilivan 0:b864b021fc6d 61 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
mkilivan 0:b864b021fc6d 62 return &cur_entry;
mkilivan 0:b864b021fc6d 63 }
mkilivan 0:b864b021fc6d 64 #endif /* _USE_LFN */
mkilivan 0:b864b021fc6d 65 }
mkilivan 0:b864b021fc6d 66
mkilivan 0:b864b021fc6d 67 void FATDirHandle::rewinddir() {
mkilivan 0:b864b021fc6d 68 dir.index = 0;
mkilivan 0:b864b021fc6d 69 }
mkilivan 0:b864b021fc6d 70
mkilivan 0:b864b021fc6d 71 off_t FATDirHandle::telldir() {
mkilivan 0:b864b021fc6d 72 return dir.index;
mkilivan 0:b864b021fc6d 73 }
mkilivan 0:b864b021fc6d 74
mkilivan 0:b864b021fc6d 75 void FATDirHandle::seekdir(off_t location) {
mkilivan 0:b864b021fc6d 76 dir.index = location;
mkilivan 0:b864b021fc6d 77 }
mkilivan 0:b864b021fc6d 78