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., 59 Temple Place - Suite 330, 18 Boston, MA 02111-1307, 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 #include "ansidecl.h" 33 #include "libiberty.h" 34 35 #if VMS 36 #include <stdlib.h> 37 #include <unixlib.h> 38 #else 39 /* For systems with larger pointers than ints, these must be declared. */ 40 extern PTR malloc PARAMS ((size_t)); 41 extern void free PARAMS ((PTR)); 42 #endif 43 44 const char * 45 spaces (count) 46 int count; 47 { 48 register char *t; 49 static char *buf; 50 static int maxsize; 51 52 if (count > maxsize) 53 { 54 if (buf) 55 { 56 free (buf); 57 } 58 buf = malloc (count + 1); 59 if (buf == (char *) 0) 60 return 0; 61 for (t = buf + count ; t != buf ; ) 62 { 63 *--t = ' '; 64 } 65 maxsize = count; 66 buf[count] = '\0'; 67 } 68 return (const char *) (buf + maxsize - count); 69 } 70 71