1/* Allocate memory region filled with spaces.
2 Copyright (C) 1991-2023 Free Software Foundation, Inc.
3
4This file is part of the libiberty library.
5Libiberty is free software; you can redistribute it and/or
6modify it under the terms of the GNU Library General Public
7License as published by the Free Software Foundation; either
8version 2 of the License, or (at your option) any later version.
9
10Libiberty is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13Library General Public License for more details.
14
15You should have received a copy of the GNU Library General Public
16License along with libiberty; see the file COPYING.LIB. If
17not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
18Boston, MA 02110-1301, USA. */
19
20/*
21
22@deftypefn Extension char* spaces (int @var{count})
23
24Returns a pointer to a memory region filled with the specified
25number of spaces and null terminated. The returned pointer is
26valid until at least the next call.
27
28@end deftypefn
29
30*/
31
32#ifdef HAVE_CONFIG_H
33#include "config.h"
34#endif
35#include "ansidecl.h"
36#include "libiberty.h"
37
38#if VMS
39#include <stdlib.h>
40#include <unixlib.h>
41#else
42/* For systems with larger pointers than ints, these must be declared. */
43extern void *malloc (size_t);
44extern void free (void *);
45#endif
46
47const char *
48spaces (int count)
49{
50 register char *t;
51 static char *buf;
52 static int maxsize;
53
54 if (count > maxsize)
55 {
56 free (buf);
57 buf = (char *) malloc (count + 1);
58 if (buf == (char *) 0)
59 return 0;
60 for (t = buf + count ; t != buf ; )
61 {
62 *--t = ' ';
63 }
64 maxsize = count;
65 buf[count] = '\0';
66 }
67 return (const char *) (buf + maxsize - count);
68}
69
70

source code of libiberty/spaces.c