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FATFileSystem/FATDirHandle.cpp@37:22e8f744bbad, 2017-02-28 (annotated)

Committer:
dkato
Date:
Tue Feb 28 02:51:39 2017 +0000
Revision:
37:22e8f744bbad
Tentative change for FATFileSystem revision error.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 37:22e8f744bbad 1 /* mbed Microcontroller Library
dkato 37:22e8f744bbad 2 * Copyright (c) 2006-2012 ARM Limited
dkato 37:22e8f744bbad 3 *
dkato 37:22e8f744bbad 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
dkato 37:22e8f744bbad 5 * of this software and associated documentation files (the "Software"), to deal
dkato 37:22e8f744bbad 6 * in the Software without restriction, including without limitation the rights
dkato 37:22e8f744bbad 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
dkato 37:22e8f744bbad 8 * copies of the Software, and to permit persons to whom the Software is
dkato 37:22e8f744bbad 9 * furnished to do so, subject to the following conditions:
dkato 37:22e8f744bbad 10 *
dkato 37:22e8f744bbad 11 * The above copyright notice and this permission notice shall be included in
dkato 37:22e8f744bbad 12 * all copies or substantial portions of the Software.
dkato 37:22e8f744bbad 13 *
dkato 37:22e8f744bbad 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dkato 37:22e8f744bbad 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dkato 37:22e8f744bbad 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dkato 37:22e8f744bbad 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dkato 37:22e8f744bbad 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dkato 37:22e8f744bbad 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
dkato 37:22e8f744bbad 20 * SOFTWARE.
dkato 37:22e8f744bbad 21 */
dkato 37:22e8f744bbad 22 #include <string.h>
dkato 37:22e8f744bbad 23 #include "ff.h"
dkato 37:22e8f744bbad 24 #include "FATDirHandle.h"
dkato 37:22e8f744bbad 25
dkato 37:22e8f744bbad 26 using namespace mbed;
dkato 37:22e8f744bbad 27
dkato 37:22e8f744bbad 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
dkato 37:22e8f744bbad 29 dir = the_dir;
dkato 37:22e8f744bbad 30 }
dkato 37:22e8f744bbad 31
dkato 37:22e8f744bbad 32 int FATDirHandle::closedir() {
dkato 37:22e8f744bbad 33 int retval = f_closedir(&dir);
dkato 37:22e8f744bbad 34 delete this;
dkato 37:22e8f744bbad 35 return retval;
dkato 37:22e8f744bbad 36 }
dkato 37:22e8f744bbad 37
dkato 37:22e8f744bbad 38 struct dirent *FATDirHandle::readdir() {
dkato 37:22e8f744bbad 39 FILINFO finfo;
dkato 37:22e8f744bbad 40
dkato 37:22e8f744bbad 41 #if _USE_LFN
dkato 37:22e8f744bbad 42 finfo.lfname = cur_entry.d_name;
dkato 37:22e8f744bbad 43 finfo.lfsize = sizeof(cur_entry.d_name);
dkato 37:22e8f744bbad 44 #endif // _USE_LFN
dkato 37:22e8f744bbad 45
dkato 37:22e8f744bbad 46 FRESULT res = f_readdir(&dir, &finfo);
dkato 37:22e8f744bbad 47
dkato 37:22e8f744bbad 48 #if _USE_LFN
dkato 37:22e8f744bbad 49 if(res != 0 || finfo.fname[0]==0) {
dkato 37:22e8f744bbad 50 return NULL;
dkato 37:22e8f744bbad 51 } else {
dkato 37:22e8f744bbad 52 if(cur_entry.d_name[0]==0) {
dkato 37:22e8f744bbad 53 // No long filename so use short filename.
dkato 37:22e8f744bbad 54 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
dkato 37:22e8f744bbad 55 }
dkato 37:22e8f744bbad 56 return &cur_entry;
dkato 37:22e8f744bbad 57 }
dkato 37:22e8f744bbad 58 #else
dkato 37:22e8f744bbad 59 if(res != 0 || finfo.fname[0]==0) {
dkato 37:22e8f744bbad 60 return NULL;
dkato 37:22e8f744bbad 61 } else {
dkato 37:22e8f744bbad 62 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
dkato 37:22e8f744bbad 63 return &cur_entry;
dkato 37:22e8f744bbad 64 }
dkato 37:22e8f744bbad 65 #endif /* _USE_LFN */
dkato 37:22e8f744bbad 66 }
dkato 37:22e8f744bbad 67
dkato 37:22e8f744bbad 68 void FATDirHandle::rewinddir() {
dkato 37:22e8f744bbad 69 dir.index = 0;
dkato 37:22e8f744bbad 70 }
dkato 37:22e8f744bbad 71
dkato 37:22e8f744bbad 72 off_t FATDirHandle::telldir() {
dkato 37:22e8f744bbad 73 return dir.index;
dkato 37:22e8f744bbad 74 }
dkato 37:22e8f744bbad 75
dkato 37:22e8f744bbad 76 void FATDirHandle::seekdir(off_t location) {
dkato 37:22e8f744bbad 77 dir.index = location;
dkato 37:22e8f744bbad 78 }
dkato 37:22e8f744bbad 79