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/*
* Copyright (c) 2011 Collabora Ltd.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * The names of contributors to this software may not be
* used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#include "config.h"
#include "array.h"
#include "debug.h"
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
static bool
maybe_expand_array (p11_array *array,
unsigned int length)
{
unsigned int new_allocated;
void **new_memory;
if (length <= array->allocated)
return true;
if (array->allocated == 0)
new_allocated = 16;
else {
return_val_if_fail (SIZE_MAX / array->allocated >= 2, false);
new_allocated = array->allocated * 2;
}
if (new_allocated < length)
new_allocated = length;
new_memory = reallocarray (array->elem, new_allocated, sizeof (void*));
return_val_if_fail (new_memory != NULL, false);
array->elem = new_memory;
array->allocated = new_allocated;
return true;
}
p11_array *
p11_array_new (p11_destroyer destroyer)
{
p11_array *array;
array = calloc (1, sizeof (p11_array));
if (array == NULL)
return NULL;
if (!maybe_expand_array (array, 2)) {
p11_array_free (array);
return NULL;
}
array->destroyer = destroyer;
return array;
}
void
p11_array_free (p11_array *array)
{
if (array == NULL)
return;
p11_array_clear (array);
free (array->elem);
free (array);
}
bool
p11_array_push (p11_array *array,
void *value)
{
if (!maybe_expand_array (array, array->num + 1))
return_val_if_reached (false);
array->elem[array->num] = value;
array->num++;
return true;
}
bool
p11_array_insert (p11_array *array,
unsigned int index,
void *value)
{
return_val_if_fail (index <= array->num, false);
if (!maybe_expand_array (array, array->num + 1))
return_val_if_reached (false);
memmove (array->elem + index + 1, array->elem + index,
(array->num - index) * sizeof (void*));
array->elem[index] = value;
array->num++;
return true;
}
void
p11_array_remove (p11_array *array,
unsigned int index)
{
if (array->destroyer)
(array->destroyer) (array->elem[index]);
memmove (array->elem + index, array->elem + index + 1,
(array->num - (index + 1)) * sizeof (void*));
array->num--;
}
void
p11_array_clear (p11_array *array)
{
unsigned int i;
if (array->destroyer) {
for (i = 0; i < array->num; i++)
(array->destroyer) (array->elem[i]);
}
array->num = 0;
}
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