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  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.       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.