1 /* Allocate memory region filled with spaces.
2    Copyright (C) 1991-2020 Free Software Foundation, Inc.
3 
4 This file is part of the libiberty library.
5 Libiberty is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9 
10 Libiberty is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 Library General Public License for more details.
14 
15 You should have received a copy of the GNU Library General Public
16 License along with libiberty; see the file COPYING.LIB.  If
17 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
18 Boston, MA 02110-1301, USA.  */
19 
20 /*
21 
22 @deftypefn Extension char* spaces (int @var{count})
23 
24 Returns a pointer to a memory region filled with the specified
25 number of spaces and null terminated.  The returned pointer is
26 valid 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.  */
43 extern PTR malloc (size_t);
44 extern void free (PTR);
45 #endif
46 
47 const char *
48 spaces (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