glibc/stdio/gets.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

60 lines
1.6 KiB
C

/* Copyright (C) 1991, 1994, 1995, 1996, 1997 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdio.h>
#include <errno.h>
#include <string.h>
link_warning (gets, "the `gets' function is dangerous and should not be used.")
/* Read a newline-terminated string from stdin into S,
removing the trailing newline. Return S or NULL. */
char *
gets (s)
char *s;
{
register char *p = s;
register int c;
FILE *stream = stdin;
if (!__validfp (stream) || p == NULL)
{
__set_errno (EINVAL);
return NULL;
}
if (feof (stream) || ferror (stream))
return NULL;
while ((c = getchar ()) != EOF)
if (c == '\n')
break;
else
*p++ = c;
*p = '\0';
/* Return null if we had an error, or if we got EOF
before writing any characters. */
if (ferror (stream) || (feof (stream) && p == s))
return NULL;
return s;
}