fatfs/documents/res/app2.c

   1 /*------------------------------------------------------------/
   2 / Remove all contents of a directory
   3 / This function works regardless of FF_FS_RPATH.
   4 /------------------------------------------------------------*/
   5
   6
   7 FILINFO fno;
   8
   9 FRESULT empty_directory (
  10     char* path      /* Working buffer filled with start directory */
  11 )
  12 {
  13     UINT i, j;
  14     FRESULT fr;
  15     DIR dir;
  16
  17     fr = f_opendir(&dir, path);
  18     if (fr == FR_OK) {
  19         for (i = 0; path[i]; i++) ;
  20         path[i++] = '/';
  21         for (;;) {
  22             fr = f_readdir(&dir, &fno);
  23             if (fr != FR_OK || !fno.fname[0]) break;
  24             if (_FS_RPATH && fno.fname[0] == '.') continue;
  25             j = 0;
  26             do
  27                 path[i+j] = fno.fname[j];
  28             while (fno.fname[j++]);
  29             if (fno.fattrib & AM_DIR) {
  30                 fr = empty_directory(path);
  31                 if (fr != FR_OK) break;
  32             }
  33             fr = f_unlink(path);
  34             if (fr != FR_OK) break;
  35         }
  36         path[--i] = '\0';
  37         closedir(&dir);
  38     }
  39
  40     return fr;
  41 }
  42
  43
  44
  45 int main (void)
  46 {
  47     FRESULT fr;
  48     FATFS fs;
  49     char buff[256];    /* Working buffer */
  50
  51
  52
  53     f_mount(&fs, "", 0);
  54
  55     strcpy(buff, "/");  /* Directory to be emptied */
  56     fr = empty_directory(buff);
  57
  58     if (fr) {
  59         printf("Function failed. (%u)\n", fr);
  60         return fr;
  61     } else {
  62         printf("All contents in the %s are successfully removed.\n", buff);
  63         return 0;
  64     }
  65 }
  66
  67
  68