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 73