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1 /* Allocate memory region filled with spaces.
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2 Copyright (C) 1991-2017 Free Software Foundation, Inc.
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3
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4 This file is part of the libiberty library.
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5 Libiberty is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 Libiberty is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with libiberty; see the file COPYING.LIB. If
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17 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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18 Boston, MA 02110-1301, USA. */
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19
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20 /*
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21
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22 @deftypefn Extension char* spaces (int @var{count})
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23
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24 Returns a pointer to a memory region filled with the specified
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25 number of spaces and null terminated. The returned pointer is
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26 valid until at least the next call.
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27
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28 @end deftypefn
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29
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30 */
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31
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32 #ifdef HAVE_CONFIG_H
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33 #include "config.h"
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34 #endif
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35 #include "ansidecl.h"
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36 #include "libiberty.h"
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37
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38 #if VMS
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39 #include <stdlib.h>
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40 #include <unixlib.h>
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41 #else
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42 /* For systems with larger pointers than ints, these must be declared. */
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43 extern PTR malloc (size_t);
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44 extern void free (PTR);
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45 #endif
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46
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47 const char *
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48 spaces (int count)
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49 {
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50 register char *t;
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51 static char *buf;
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52 static int maxsize;
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53
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54 if (count > maxsize)
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55 {
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56 free (buf);
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0
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57 buf = (char *) malloc (count + 1);
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58 if (buf == (char *) 0)
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59 return 0;
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60 for (t = buf + count ; t != buf ; )
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61 {
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62 *--t = ' ';
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63 }
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64 maxsize = count;
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65 buf[count] = '\0';
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66 }
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67 return (const char *) (buf + maxsize - count);
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68 }
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69
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