src/libs/ChaNFS/FATDirHandle.cpp

   1 /* mbed Microcontroller Library - FATDirHandle
   2  * Copyright (c) 2008, sford
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include "ff.h"
   9 #include "FATDirHandle.h"
  10 #include "FATFileSystem.h"
  11
  12 namespace mbed {
  13
  14 FATDirHandle::FATDirHandle(const DIR_t &the_dir) {
  15     dir = the_dir;
  16 }
  17
  18 int FATDirHandle::closedir() {
  19     delete this;
  20     return 0;
  21 }
  22
  23 struct dirent *FATDirHandle::readdir() {
  24     FILINFO finfo;
  25 #if _USE_LFN
  26     static char lfn[_MAX_LFN * (_LFN_UNICODE ? 2 : 1) + 1];
  27     finfo.lfname = lfn;
  28     finfo.lfsize = sizeof(lfn);
  29 #endif
  30     FRESULT res = f_readdir(&dir, &finfo);
  31     if(res != 0 || finfo.fname[0]==0) {
  32         return NULL;
  33     } else {
  34         char* fn;
  35         int stringSize = 0;
  36 #if _USE_LFN
  37         fn = *finfo.lfname ? finfo.lfname : finfo.fname;
  38         stringSize = *finfo.lfname ? finfo.lfsize : sizeof(finfo.fname);
  39 #else
  40         fn = fno.fname;
  41         stringSize =  sizeof(finfo.fname);
  42 #endif
  43         memcpy(cur_entry.d_name, fn, stringSize);
  44         cur_entry.d_isdir= (finfo.fattrib & AM_DIR);
  45         cur_entry.d_fsize= finfo.fsize;
  46         return &cur_entry;
  47     }
  48 }
  49
  50 void FATDirHandle::rewinddir() {
  51     dir.index = 0;
  52 }
  53
  54 off_t FATDirHandle::telldir() {
  55     return dir.index;
  56 }
  57
  58 void FATDirHandle::seekdir(off_t location) {
  59     dir.index = location;
  60 }
  61
  62 }
  63