size_t cbor_serialize_alloc(const cbor_item_t * item,
unsigned char ** buffer,
size_t * buffer_size)
{
size_t bfr_size = 32;
unsigned char * bfr = _CBOR_MALLOC(bfr_size), * tmp_bfr;
if (bfr == NULL) {
return 0;
}
size_t written;
/* This is waaay too optimistic - figure out something smarter (eventually) */
while ((written = cbor_serialize(item, bfr, bfr_size)) == 0) {
if (!_cbor_safe_to_multiply(CBOR_BUFFER_GROWTH, bfr_size)) {
_CBOR_FREE(bfr);
return 0;
}
tmp_bfr = _CBOR_REALLOC(bfr, bfr_size *= 2);
if (tmp_bfr == NULL) {
_CBOR_FREE(bfr);
return 0;
}
bfr = tmp_bfr;
}
*buffer = bfr;
*buffer_size = bfr_size;
return written;
}
bool cbor_array_push(cbor_item_t *array, cbor_item_t *pushee)
{
assert(cbor_isa_array(array));
struct _cbor_array_metadata *metadata = (struct _cbor_array_metadata *) &array->metadata;
cbor_item_t **data = (cbor_item_t **) array->data;
if (cbor_array_is_definite(array)) {
/* Do not reallocate definite arrays */
if (metadata->end_ptr >= metadata->allocated)
return false;
data[metadata->end_ptr++] = pushee;
} else {
/* Exponential realloc */
if (metadata->end_ptr >= metadata->allocated) {
size_t new_allocation = (size_t)(CBOR_BUFFER_GROWTH * (metadata->allocated));
new_allocation = new_allocation ? new_allocation : 1;
unsigned char * new_data = _CBOR_REALLOC(array->data,
new_allocation * sizeof(cbor_item_t *));
if (new_data == NULL)
return false;
array->data = new_data;
metadata->allocated = new_allocation;
}
((cbor_item_t **)array->data)[metadata->end_ptr++] = pushee;
}
cbor_incref(pushee);
return true;
}