(self, amount=None)
| 279 | return min(max_chunk_size, requested_size) |
| 280 | |
| 281 | def read(self, amount=None): |
| 282 | if amount is None: |
| 283 | amount_to_read = self._size - self._amount_read |
| 284 | else: |
| 285 | amount_to_read = min(self._size - self._amount_read, amount) |
| 286 | data = self._fileobj.read(amount_to_read) |
| 287 | self._amount_read += len(data) |
| 288 | if self._callback is not None and self._callback_enabled: |
| 289 | self._callback(len(data)) |
| 290 | return data |
| 291 | |
| 292 | def enable_callback(self): |
| 293 | self._callback_enabled = True |