1 /* safe-fgets.c --- like fgets, but allocates its own static buffer.
3 Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Contributed by Red Hat, Inc.
7 This file is part of the GNU simulators.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "safe-fgets.h"
28 static char *line_buf
= 0;
29 static int line_buf_size
= 0;
40 line_buf
= (char *) malloc (LBUFINCR
);
41 line_buf_size
= LBUFINCR
;
44 /* points to last byte */
45 line_ptr
= line_buf
+ line_buf_size
- 1;
47 /* so we can see if fgets put a 0 there */
49 if (fgets (line_buf
, line_buf_size
, f
) == 0)
52 /* we filled the buffer? */
53 while (line_ptr
[0] == 0 && line_ptr
[-1] != '\n')
55 /* Make the buffer bigger and read more of the line */
56 line_buf_size
+= LBUFINCR
;
57 line_buf
= (char *) realloc (line_buf
, line_buf_size
);
59 /* points to last byte again */
60 line_ptr
= line_buf
+ line_buf_size
- 1;
61 /* so we can see if fgets put a 0 there */
64 if (fgets (line_buf
+ line_buf_size
- LBUFINCR
- 1, LBUFINCR
+ 1, f
) ==
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