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-rw-r--r--libio/__fpurge.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/libio/__fpurge.c b/libio/__fpurge.c
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+++ b/libio/__fpurge.c
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+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU IO Library.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ This 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this library; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, if you link this library with files
+ compiled with a GNU compiler to produce an executable, this does
+ not cause the resulting executable to be covered by the GNU General
+ Public License. This exception does not however invalidate any
+ other reasons why the executable file might be covered by the GNU
+ General Public License. */
+
+#include <stdio_ext.h>
+
+void
+__fpurge (FILE *fp)
+{
+ if (fp->_mode > 0)
+ {
+ /* Wide-char stream. */
+ if (_IO_in_wbackup (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;
+ }
+}