Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

libraries/fs/fat/FATDirHandle.cpp@0:6c56fb4bc5f0, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:27:58 2016 +0000
Revision:
0:6c56fb4bc5f0
Moving to library for sharing updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /* mbed Microcontroller Library
nexpaq 0:6c56fb4bc5f0 2 * Copyright (c) 2006-2012 ARM Limited
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
nexpaq 0:6c56fb4bc5f0 5 * of this software and associated documentation files (the "Software"), to deal
nexpaq 0:6c56fb4bc5f0 6 * in the Software without restriction, including without limitation the rights
nexpaq 0:6c56fb4bc5f0 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
nexpaq 0:6c56fb4bc5f0 8 * copies of the Software, and to permit persons to whom the Software is
nexpaq 0:6c56fb4bc5f0 9 * furnished to do so, subject to the following conditions:
nexpaq 0:6c56fb4bc5f0 10 *
nexpaq 0:6c56fb4bc5f0 11 * The above copyright notice and this permission notice shall be included in
nexpaq 0:6c56fb4bc5f0 12 * all copies or substantial portions of the Software.
nexpaq 0:6c56fb4bc5f0 13 *
nexpaq 0:6c56fb4bc5f0 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
nexpaq 0:6c56fb4bc5f0 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
nexpaq 0:6c56fb4bc5f0 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
nexpaq 0:6c56fb4bc5f0 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
nexpaq 0:6c56fb4bc5f0 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
nexpaq 0:6c56fb4bc5f0 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
nexpaq 0:6c56fb4bc5f0 20 * SOFTWARE.
nexpaq 0:6c56fb4bc5f0 21 */
nexpaq 0:6c56fb4bc5f0 22 #include <string.h>
nexpaq 0:6c56fb4bc5f0 23 #include "ff.h"
nexpaq 0:6c56fb4bc5f0 24 #include "FATDirHandle.h"
nexpaq 0:6c56fb4bc5f0 25
nexpaq 0:6c56fb4bc5f0 26 using namespace mbed;
nexpaq 0:6c56fb4bc5f0 27
nexpaq 0:6c56fb4bc5f0 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir, PlatformMutex * mutex): _mutex(mutex) {
nexpaq 0:6c56fb4bc5f0 29 dir = the_dir;
nexpaq 0:6c56fb4bc5f0 30 }
nexpaq 0:6c56fb4bc5f0 31
nexpaq 0:6c56fb4bc5f0 32 int FATDirHandle::closedir() {
nexpaq 0:6c56fb4bc5f0 33 lock();
nexpaq 0:6c56fb4bc5f0 34 int retval = f_closedir(&dir);
nexpaq 0:6c56fb4bc5f0 35 unlock();
nexpaq 0:6c56fb4bc5f0 36 delete this;
nexpaq 0:6c56fb4bc5f0 37 return retval;
nexpaq 0:6c56fb4bc5f0 38 }
nexpaq 0:6c56fb4bc5f0 39
nexpaq 0:6c56fb4bc5f0 40 struct dirent *FATDirHandle::readdir() {
nexpaq 0:6c56fb4bc5f0 41 FILINFO finfo;
nexpaq 0:6c56fb4bc5f0 42
nexpaq 0:6c56fb4bc5f0 43 lock();
nexpaq 0:6c56fb4bc5f0 44 #if _USE_LFN
nexpaq 0:6c56fb4bc5f0 45 finfo.lfname = cur_entry.d_name;
nexpaq 0:6c56fb4bc5f0 46 finfo.lfsize = sizeof(cur_entry.d_name);
nexpaq 0:6c56fb4bc5f0 47 #endif // _USE_LFN
nexpaq 0:6c56fb4bc5f0 48
nexpaq 0:6c56fb4bc5f0 49 FRESULT res = f_readdir(&dir, &finfo);
nexpaq 0:6c56fb4bc5f0 50
nexpaq 0:6c56fb4bc5f0 51 #if _USE_LFN
nexpaq 0:6c56fb4bc5f0 52 if(res != 0 || finfo.fname[0]==0) {
nexpaq 0:6c56fb4bc5f0 53 unlock();
nexpaq 0:6c56fb4bc5f0 54 return NULL;
nexpaq 0:6c56fb4bc5f0 55 } else {
nexpaq 0:6c56fb4bc5f0 56 if(cur_entry.d_name[0]==0) {
nexpaq 0:6c56fb4bc5f0 57 // No long filename so use short filename.
nexpaq 0:6c56fb4bc5f0 58 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
nexpaq 0:6c56fb4bc5f0 59 }
nexpaq 0:6c56fb4bc5f0 60 unlock();
nexpaq 0:6c56fb4bc5f0 61 return &cur_entry;
nexpaq 0:6c56fb4bc5f0 62 }
nexpaq 0:6c56fb4bc5f0 63 #else
nexpaq 0:6c56fb4bc5f0 64 if(res != 0 || finfo.fname[0]==0) {
nexpaq 0:6c56fb4bc5f0 65 unlock();
nexpaq 0:6c56fb4bc5f0 66 return NULL;
nexpaq 0:6c56fb4bc5f0 67 } else {
nexpaq 0:6c56fb4bc5f0 68 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
nexpaq 0:6c56fb4bc5f0 69 unlock();
nexpaq 0:6c56fb4bc5f0 70 return &cur_entry;
nexpaq 0:6c56fb4bc5f0 71 }
nexpaq 0:6c56fb4bc5f0 72 #endif /* _USE_LFN */
nexpaq 0:6c56fb4bc5f0 73 }
nexpaq 0:6c56fb4bc5f0 74
nexpaq 0:6c56fb4bc5f0 75 void FATDirHandle::rewinddir() {
nexpaq 0:6c56fb4bc5f0 76 lock();
nexpaq 0:6c56fb4bc5f0 77 dir.index = 0;
nexpaq 0:6c56fb4bc5f0 78 unlock();
nexpaq 0:6c56fb4bc5f0 79 }
nexpaq 0:6c56fb4bc5f0 80
nexpaq 0:6c56fb4bc5f0 81 off_t FATDirHandle::telldir() {
nexpaq 0:6c56fb4bc5f0 82 lock();
nexpaq 0:6c56fb4bc5f0 83 off_t offset = dir.index;
nexpaq 0:6c56fb4bc5f0 84 unlock();
nexpaq 0:6c56fb4bc5f0 85 return offset;
nexpaq 0:6c56fb4bc5f0 86 }
nexpaq 0:6c56fb4bc5f0 87
nexpaq 0:6c56fb4bc5f0 88 void FATDirHandle::seekdir(off_t location) {
nexpaq 0:6c56fb4bc5f0 89 lock();
nexpaq 0:6c56fb4bc5f0 90 dir.index = location;
nexpaq 0:6c56fb4bc5f0 91 unlock();
nexpaq 0:6c56fb4bc5f0 92 }
nexpaq 0:6c56fb4bc5f0 93
nexpaq 0:6c56fb4bc5f0 94 void FATDirHandle::lock() {
nexpaq 0:6c56fb4bc5f0 95 _mutex->lock();
nexpaq 0:6c56fb4bc5f0 96 }
nexpaq 0:6c56fb4bc5f0 97
nexpaq 0:6c56fb4bc5f0 98 void FATDirHandle::unlock() {
nexpaq 0:6c56fb4bc5f0 99 _mutex->unlock();
nexpaq 0:6c56fb4bc5f0 100 }
nexpaq 0:6c56fb4bc5f0 101