| 1 | /* Allocate memory region filled with spaces. |
| 2 | Copyright (C) 1991-2018 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 | |