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70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* Allocate memory region filled with spaces.
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Copyright (C) 1991-2017 Free Software Foundation, Inc.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/*
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@deftypefn Extension char* spaces (int @var{count})
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Returns a pointer to a memory region filled with the specified
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number of spaces and null terminated. The returned pointer is
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valid until at least the next call.
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@end deftypefn
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "ansidecl.h"
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#include "libiberty.h"
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#if VMS
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#include <stdlib.h>
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#include <unixlib.h>
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#else
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/* For systems with larger pointers than ints, these must be declared. */
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extern PTR malloc (size_t);
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extern void free (PTR);
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#endif
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const char *
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spaces (int count)
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{
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register char *t;
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static char *buf;
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static int maxsize;
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if (count > maxsize)
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{
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free (buf);
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buf = (char *) malloc (count + 1);
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if (buf == (char *) 0)
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return 0;
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for (t = buf + count ; t != buf ; )
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{
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*--t = ' ';
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}
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maxsize = count;
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buf[count] = '\0';
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}
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return (const char *) (buf + maxsize - count);
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}
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