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/* Copyright (C) 2000-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdio_ext.h>
#include "libioP.h"
void
__fpurge (FILE *fp)
{
if (fp->_mode > 0)
{
/* Wide-char stream. */
if (_IO_in_backup (fp))
_IO_free_wbackup_area (fp);
fp->_wide_data->_IO_read_end = fp->_wide_data->_IO_read_ptr;
fp->_wide_data->_IO_write_ptr = fp->_wide_data->_IO_write_base;
}
else
{
/* Byte stream. */
if (_IO_in_backup (fp))
_IO_free_backup_area (fp);
fp->_IO_read_end = fp->_IO_read_ptr;
fp->_IO_write_ptr = fp->_IO_write_base;
}
}
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