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/*
* Copyright (C) 2009 Citrix Ltd.
* Author Vincent Hanquez <vincent.hanquez@eu.citrix.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; version 2.1 only. with the special
* exception on linking described in file LICENSE.
*
* 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 Lesser General Public License for more details.
*/
#include <stdlib.h>
#include "flexarray.h"
flexarray_t *flexarray_make(int size, int autogrow)
{
flexarray_t *array = malloc(sizeof(struct flexarray));
if (array) {
array->size = size;
array->autogrow = autogrow;
array->data = calloc(size, sizeof(void *));
}
return array;
}
void flexarray_free(flexarray_t *array)
{
free(array->data);
free(array);
}
int flexarray_grow(flexarray_t *array, int extents)
{
void **data;
int newsize;
newsize = array->size + extents;
data = realloc(array->data, sizeof(void *) * newsize);
if (!data)
return 1;
array->size += extents;
array->data = data;
return 0;
}
int flexarray_set(flexarray_t *array, unsigned int index, void *ptr)
{
if (index >= array->size) {
int newsize;
if (!array->autogrow)
return 1;
newsize = (array->size * 2 < index) ? index + 1 : array->size * 2;
if (flexarray_grow(array, newsize - array->size))
return 2;
}
array->data[index] = ptr;
return 0;
}
int flexarray_get(flexarray_t *array, int index, void **ptr)
{
if (index >= array->size)
return 1;
*ptr = array->data[index];
return 0;
}
void **flexarray_contents(flexarray_t *array)
{
void **data;
data = array->data;
free(array);
return data;
}
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