Joerg Schmalzl / USBHost_DISCO-F746NG_joerg

USB lib Joerg

Fork of USBHost_DISCO-F746NG by Dieter Graef

FATFileSystem/FATDirHandle.cpp@26:49c13dfc95d0, 2016-11-30 (annotated)

Committer:
schmalzl
Date:
Wed Nov 30 10:51:48 2016 +0000
Revision:
26:49c13dfc95d0
Parent:
24:5396b6a93262 
Turbo Ede v1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 24:5396b6a93262 1 /* mbed Microcontroller Library
DieterGraef 24:5396b6a93262 2 * Copyright (c) 2006-2012 ARM Limited
DieterGraef 24:5396b6a93262 3 *
DieterGraef 24:5396b6a93262 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
DieterGraef 24:5396b6a93262 5 * of this software and associated documentation files (the "Software"), to deal
DieterGraef 24:5396b6a93262 6 * in the Software without restriction, including without limitation the rights
DieterGraef 24:5396b6a93262 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
DieterGraef 24:5396b6a93262 8 * copies of the Software, and to permit persons to whom the Software is
DieterGraef 24:5396b6a93262 9 * furnished to do so, subject to the following conditions:
DieterGraef 24:5396b6a93262 10 *
DieterGraef 24:5396b6a93262 11 * The above copyright notice and this permission notice shall be included in
DieterGraef 24:5396b6a93262 12 * all copies or substantial portions of the Software.
DieterGraef 24:5396b6a93262 13 *
DieterGraef 24:5396b6a93262 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
DieterGraef 24:5396b6a93262 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
DieterGraef 24:5396b6a93262 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
DieterGraef 24:5396b6a93262 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
DieterGraef 24:5396b6a93262 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
DieterGraef 24:5396b6a93262 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
DieterGraef 24:5396b6a93262 20 * SOFTWARE.
DieterGraef 24:5396b6a93262 21 */
DieterGraef 24:5396b6a93262 22 #include <string.h>
DieterGraef 24:5396b6a93262 23 #include "ff.h"
DieterGraef 24:5396b6a93262 24 #include "FATDirHandle.h"
DieterGraef 24:5396b6a93262 25
DieterGraef 24:5396b6a93262 26 using namespace mbed;
DieterGraef 24:5396b6a93262 27
DieterGraef 24:5396b6a93262 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
DieterGraef 24:5396b6a93262 29 dir = the_dir;
DieterGraef 24:5396b6a93262 30 }
DieterGraef 24:5396b6a93262 31
DieterGraef 24:5396b6a93262 32 int FATDirHandle::closedir() {
DieterGraef 24:5396b6a93262 33 int retval = f_closedir(&dir);
DieterGraef 24:5396b6a93262 34 delete this;
DieterGraef 24:5396b6a93262 35 return retval;
DieterGraef 24:5396b6a93262 36 }
DieterGraef 24:5396b6a93262 37
DieterGraef 24:5396b6a93262 38 struct dirent *FATDirHandle::readdir() {
DieterGraef 24:5396b6a93262 39 FILINFO finfo;
DieterGraef 24:5396b6a93262 40
DieterGraef 24:5396b6a93262 41 #if _USE_LFN
DieterGraef 24:5396b6a93262 42 finfo.lfname = cur_entry.d_name;
DieterGraef 24:5396b6a93262 43 finfo.lfsize = sizeof(cur_entry.d_name);
DieterGraef 24:5396b6a93262 44 #endif // _USE_LFN
DieterGraef 24:5396b6a93262 45
DieterGraef 24:5396b6a93262 46 FRESULT res = f_readdir(&dir, &finfo);
DieterGraef 24:5396b6a93262 47
DieterGraef 24:5396b6a93262 48 #if _USE_LFN
DieterGraef 24:5396b6a93262 49 if(res != 0 || finfo.fname[0]==0) {
DieterGraef 24:5396b6a93262 50 return NULL;
DieterGraef 24:5396b6a93262 51 } else {
DieterGraef 24:5396b6a93262 52 if(cur_entry.d_name[0]==0) {
DieterGraef 24:5396b6a93262 53 // No long filename so use short filename.
DieterGraef 24:5396b6a93262 54 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
DieterGraef 24:5396b6a93262 55 }
DieterGraef 24:5396b6a93262 56 return &cur_entry;
DieterGraef 24:5396b6a93262 57 }
DieterGraef 24:5396b6a93262 58 #else
DieterGraef 24:5396b6a93262 59 if(res != 0 || finfo.fname[0]==0) {
DieterGraef 24:5396b6a93262 60 return NULL;
DieterGraef 24:5396b6a93262 61 } else {
DieterGraef 24:5396b6a93262 62 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
DieterGraef 24:5396b6a93262 63 return &cur_entry;
DieterGraef 24:5396b6a93262 64 }
DieterGraef 24:5396b6a93262 65 #endif /* _USE_LFN */
DieterGraef 24:5396b6a93262 66 }
DieterGraef 24:5396b6a93262 67
DieterGraef 24:5396b6a93262 68 void FATDirHandle::rewinddir() {
DieterGraef 24:5396b6a93262 69 dir.index = 0;
DieterGraef 24:5396b6a93262 70 }
DieterGraef 24:5396b6a93262 71
DieterGraef 24:5396b6a93262 72 off_t FATDirHandle::telldir() {
DieterGraef 24:5396b6a93262 73 return dir.index;
DieterGraef 24:5396b6a93262 74 }
DieterGraef 24:5396b6a93262 75
DieterGraef 24:5396b6a93262 76 void FATDirHandle::seekdir(off_t location) {
DieterGraef 24:5396b6a93262 77 dir.index = location;
DieterGraef 24:5396b6a93262 78 }
DieterGraef 24:5396b6a93262 79