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/* str/realloc.c - Ensure a string has a minimum size, copy the old string
* Copyright (C) 2001 Bruce Guenter <bruceg@em.ca>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include "str.h"
/* Make sure that the string has at least size+1 bytes of available space. */
int str_realloc(str* s, unsigned size)
{
char* news;
++size;
if (size >= s->size) {
size += size/8 + STR_BLOCKSIZE-1;
size -= size % STR_BLOCKSIZE;
if ((news = malloc(size)) == 0) return 0;
if (s->s) {
memcpy(news, s->s, s->len+1);
free(s->s);
}
s->size = size;
s->s = news;
}
return 1;
}
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