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comparison libiberty/spaces.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 04ced10e8804
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-1:000000000000 0:a06113de4d67
1 /* Allocate memory region filled with spaces.
2 Copyright (C) 1991 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 if (buf)
57 {
58 free (buf);
59 }
60 buf = (char *) malloc (count + 1);
61 if (buf == (char *) 0)
62 return 0;
63 for (t = buf + count ; t != buf ; )
64 {
65 *--t = ' ';
66 }
67 maxsize = count;
68 buf[count] = '\0';
69 }
70 return (const char *) (buf + maxsize - count);
71 }
72