mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-23 01:09:30 +08:00
72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/* Copyright (C) 1993, 1996, 1997 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 "libioP.h"
|
|
#include <limits.h>
|
|
|
|
char*
|
|
_IO_gets (buf)
|
|
char *buf;
|
|
{
|
|
_IO_size_t count;
|
|
int ch;
|
|
char *retval;
|
|
|
|
_IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile,
|
|
_IO_stdin);
|
|
_IO_flockfile (_IO_stdin);
|
|
ch = _IO_getc_unlocked (_IO_stdin);
|
|
if (ch == EOF)
|
|
{
|
|
retval = NULL;
|
|
goto unlock_return;
|
|
}
|
|
if (ch == '\n')
|
|
count = 0;
|
|
else
|
|
{
|
|
buf[0] = (char) ch;
|
|
count = _IO_getline (_IO_stdin, buf + 1, INT_MAX, '\n', 0) + 1;
|
|
if (_IO_stdin->_IO_file_flags & _IO_ERR_SEEN)
|
|
{
|
|
retval = NULL;
|
|
goto unlock_return;
|
|
}
|
|
}
|
|
buf[count] = 0;
|
|
retval = buf;
|
|
unlock_return:
|
|
_IO_cleanup_region_end (1);
|
|
return retval;
|
|
}
|
|
|
|
#ifdef weak_alias
|
|
weak_alias (_IO_gets, gets)
|
|
#endif
|
|
|
|
#ifdef _LIBC
|
|
link_warning (gets, "the `gets' function is dangerous and should not be used.")
|
|
#endif
|