fatfs/doc/res/app2.c

   1 /*------------------------------------------------------------/
   2 / Remove all contents of a directory
   3 / This function works regardless of _FS_RPATH.
   4 /------------------------------------------------------------*/
   5
   6
   7 FRESULT empty_directory (
   8     char* path      /* Working buffer filled with start directory */
   9 )
  10 {
  11     UINT i, j;
  12     FRESULT fr;
  13     DIR dir;
  14     FILINFO fno;
  15
  16 #if _USE_LFN
  17     fno.lfname = 0; /* Disable LFN output */
  18 #endif
  19     fr = f_opendir(&dir, path);
  20     if (fr == FR_OK) {
  21         for (i = 0; path[i]; i++) ;
  22         path[i++] = '/';
  23         for (;;) {
  24             fr = f_readdir(&dir, &fno);
  25             if (fr != FR_OK || !fno.fname[0]) break;
  26             if (_FS_RPATH && fno.fname[0] == '.') continue;
  27             j = 0;
  28             do
  29                 path[i+j] = fno.fname[j];
  30             while (fno.fname[j++]);
  31             if (fno.fattrib & AM_DIR) {
  32                 fr = empty_directory(path);
  33                 if (fr != FR_OK) break;
  34             }
  35             fr = f_unlink(path);
  36             if (fr != FR_OK) break;
  37         }
  38         path[--i] = '\0';
  39         closedir(&dir);
  40     }
  41
  42     return fr;
  43 }
  44
  45
  46
  47 int main (void)
  48 {
  49     FRESULT fr;
  50     FATFS fs;
  51     char buff[64];    /* Working buffer */
  52
  53
  54
  55     f_mount(&fs, "", 0);
  56
  57     strcpy(buff, "/");  /* Directory to be emptied */
  58     fr = empty_directory(buff);
  59
  60     if (fr) {
  61         printf("Function failed. (%u)\n", fr);
  62         return fr;
  63     } else {
  64         printf("All contents in the %s are successfully removed.\n", buff);
  65         return 0;
  66     }
  67 }
  68
  69
  70