C++ (Cpp) _fdelete Examples

Example #1

File: fs_fdelete.c Project: rmnsfx/Pion

int fdelete (const char *filename) {
  /* Delete a file with name 'filename'. */
  IOB *fcb;
  int handle;

  START_LOCK (int);

  /* Find an unused _iob structure. */
  if ((handle = fs_find_iob ()) == EOF) {
    RETURN (1);
  }
  fcb = &_iob[handle];
  /* Get the drive index. */
  fcb->drive = fs_get_drive (filename);
  if (fcb->drive != DRV_NONE) {
    /* Skip drive letter 'X:' */
    filename += 2;
  }
  else {
    fcb->drive = _DEF_DRIVE;
  }
  if (fcb->drive == DRV_MCARD) {
    /* Delete a file on Flash Memory Card. */
    if (fat_delete (filename, fcb) == __TRUE) {
      RETURN (0);
    }
    /* File not found error */
    RETURN (1);
  }
  /* Set drive parameters. */
  if (fs_set_params (fcb) == __FALSE) {
    RETURN (1);
  }

  if (fs_Find_File (filename, fcb) == 0) {
    /* File with 'filename' found, delete it. */
    RETURN (_fdelete (fcb));
  }
  /* File not found error */
  RETURN (1);

  END_LOCK;
}

Example #2

File: _fs_fopen.c Project: kentworld01/dlc_four

int __fopen (const char *fname, int openmode) {
   /* Low level file open function. */
   U32 i,fid;
   int handle;
   IOB *fcb;

   START_LOCK (int);

   /* Find unused _iob[] structure. */
   if ((handle = fs_find_iob ()) == EOF) {
      /* Cannot find any unused _iob[] structure */
      RETURN (-1);
   }

   fcb = &_iob[handle];
   fcb->drive = fs_get_drive (fname);
   if (fcb->drive != DRV_NONE) {
      /* Skip drive letter 'X:' */
      fname += 2;
   }
   else {
      fcb->drive = _DEF_DRIVE;
   }

   if (openmode & OPEN_PLUS) {
      /* File mode "rw" is currently not supported. */
      goto err;
   }
   fcb->flags = (openmode & (OPEN_W | OPEN_A)) ? _IOWRT : _IOREAD;
   if (openmode & OPEN_A) {
      fcb->flags |= _IOAPPEND;
   }

   if (fcb->drive == DRV_MCARD) {
      /* Open a file on Flash Memory Card. */
      fid = (fat_find_file (fname, fcb) == __TRUE) ? 0 : 1;
   }
   else {
      /* Open a file on Embedded Flash/RAM device. */
      if (fs_set_params (fcb) == __FALSE) {
         goto err;
      }
      fcb->_fidx = 0;
      fid = fs_Find_File (fname, fcb);
   }
   if (fid == 0) {
      /* File with a given 'fname' has been found */
      for (i = 0; i < _NFILE; i++) {
         if (i == handle) {
            /* Skip own file handle. */
            continue;
         }
         if (!(_iob[i].flags & (_IOREAD|_IOWRT))) {
            /* File closed. */
            continue;
         }
         if (_iob[i].drive != fcb->drive) {
            /* File opened on different drives. */
            continue;
         }
         if (_iob[i].fileID != fcb->fileID) {
            /* Different file IDs. */
            continue;
         }
         if ((_iob[i].drive == DRV_MCARD) &&
             (_iob[i]._currDatClus != fcb->_currDatClus)) {
            /* Different starting clusters for SD card. */
            continue;
         }
         /* This file is opened. */
         if ((_iob[i].flags & _IOWRT) || (fcb->flags & _IOWRT)) {
             /* Only multiple fopen for read is allowed. */
            goto err;
         }
      }
      if (fcb->flags & _IOAPPEND) {
         /* Append mode, done here, block appended by _setfpos(). */
         fcb->fsize  = __getfsize (fcb, __TRUE);
         RETURN (handle);
      }

      if (fcb->drive == DRV_MCARD) {
         /* Open a file on Flash Memory Card. */
         if (fcb->flags & _IOWRT) {
            fat_delete (fname, fcb);
            goto mcard;
         }
      }
      else {
         /* Open a file on embedded Flash/RAM Device. */
         if (fcb->flags & _IOWRT) {
            _fdelete (fcb);
            goto fdev;
         }
         /* Open also 0-size file for reading. */
         fcb->_ftop = fcb->_fbot;
      }
      RETURN (handle);
   }
   /* File not found */
   if (fcb->flags & _IOREAD) {
err:  fcb->flags = 0;
      RETURN (-1);
   }

   if (fcb->drive == DRV_MCARD) {
mcard:if (fat_create (fname, fcb) == __FALSE) {
         goto err;
      }
   }
   else {
      /* The max. 'fid' found in previous 'fs_Find_File' is here. */
      fcb->fileID = fs_get_freeID (fid, fcb);
fdev: if (_fcreate (fname, fcb) != 0) {
         goto err;
      }
   }
   RETURN (handle);

   END_LOCK;
}