1 /* safe-fgets.c --- like fgets, but allocates its own static buffer.
3 Copyright (C) 2005 Free Software Foundation, Inc.
4 Contributed by Red Hat, Inc.
6 This file is part of the GNU simulators.
8 The GNU simulators are free software; you can redistribute them and/or
9 modify them under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2 of the
11 License, or (at your option) any later version.
13 The GNU simulators are distributed in the hope that they will be
14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with the GNU simulators; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
27 #include "safe-fgets.h"
29 static char *line_buf = 0;
30 static int line_buf_size = 0;
41 line_buf = (char *) malloc (LBUFINCR);
42 line_buf_size = LBUFINCR;
45 /* points to last byte */
46 line_ptr = line_buf + line_buf_size - 1;
48 /* so we can see if fgets put a 0 there */
50 if (fgets (line_buf, line_buf_size, f) == 0)
53 /* we filled the buffer? */
54 while (line_ptr[0] == 0 && line_ptr[-1] != '\n')
56 /* Make the buffer bigger and read more of the line */
57 line_buf_size += LBUFINCR;
58 line_buf = (char *) realloc (line_buf, line_buf_size);
60 /* points to last byte again */
61 line_ptr = line_buf + line_buf_size - 1;
62 /* so we can see if fgets put a 0 there */
65 if (fgets (line_buf + line_buf_size - LBUFINCR - 1, LBUFINCR + 1, f) ==