| 1 | /* Copyright (C) 2000-2022 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <stdio_ext.h> |
| 19 | #include "libioP.h" |
| 20 | |
| 21 | void |
| 22 | __fpurge (FILE *fp) |
| 23 | { |
| 24 | if (fp->_mode > 0) |
| 25 | { |
| 26 | /* Wide-char stream. */ |
| 27 | if (_IO_in_backup (fp)) |
| 28 | _IO_free_wbackup_area (fp); |
| 29 | |
| 30 | fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr; |
| 31 | fp->_wide_data->_IO_write_ptr = fp->_wide_data->_IO_write_base; |
| 32 | } |
| 33 | else |
| 34 | { |
| 35 | /* Byte stream. */ |
| 36 | if (_IO_in_backup (fp)) |
| 37 | _IO_free_backup_area (fp); |
| 38 | |
| 39 | fp->_IO_read_end = fp->_IO_read_ptr; |
| 40 | fp->_IO_write_ptr = fp->_IO_write_base; |
| 41 | } |
| 42 | } |
| 43 |