IOT LCD Extra Credit
Fork of FATFileSystem by
FATDirHandle.cpp
- Committer:
- Kojto
- Date:
- 2016-08-25
- Revision:
- 8:c4baca9a2c3d
- Parent:
- 5:b3b3370574cf
File content as of revision 8:c4baca9a2c3d:
/* mbed Microcontroller Library * Copyright (c) 2006-2012 ARM Limited * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <string.h> #include "ff.h" #include "FATDirHandle.h" using namespace mbed; FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir, PlatformMutex * mutex): _mutex(mutex) { dir = the_dir; } int FATDirHandle::closedir() { lock(); int retval = f_closedir(&dir); unlock(); delete this; return retval; } struct dirent *FATDirHandle::readdir() { FILINFO finfo; lock(); #if _USE_LFN finfo.lfname = cur_entry.d_name; finfo.lfsize = sizeof(cur_entry.d_name); #endif // _USE_LFN FRESULT res = f_readdir(&dir, &finfo); #if _USE_LFN if(res != 0 || finfo.fname[0]==0) { unlock(); return NULL; } else { if(cur_entry.d_name[0]==0) { // No long filename so use short filename. memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname)); } unlock(); return &cur_entry; } #else if(res != 0 || finfo.fname[0]==0) { unlock(); return NULL; } else { memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname)); unlock(); return &cur_entry; } #endif /* _USE_LFN */ } void FATDirHandle::rewinddir() { lock(); dir.index = 0; unlock(); } off_t FATDirHandle::telldir() { lock(); off_t offset = dir.index; unlock(); return offset; } void FATDirHandle::seekdir(off_t location) { lock(); dir.index = location; unlock(); } void FATDirHandle::lock() { _mutex->lock(); } void FATDirHandle::unlock() { _mutex->unlock(); }