FTELL

The FTELL function retrieves the current position of a file handle in bits.

FTELL( FILE fileHandle )

Example

The following example shows how one can determine the length of a file in bytes:

LOCAL FileLength(FILE fileHandle)(INT length)
  INT oldPos;

  // remember current position
  oldPos := FTELL(fileHandle);

  // seek to the end of the file
  FSEEK(fileHandle, 0, 2);

  // get length
  length := FTELL(fileHandle);

  // convert from bits to bytes
  length := length / 8;

  // return to the old position
  FSEEK(fileHandle, oldPos, 0);
END;