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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "avro/allocation.h"
#include "avro/data.h"
#include "avro/errors.h"
#include "avro_private.h"
void avro_raw_array_init(avro_raw_array_t *array, size_t element_size)
{
memset(array, 0, sizeof(avro_raw_array_t));
array->element_size = element_size;
}
void avro_raw_array_done(avro_raw_array_t *array)
{
if (array->data) {
avro_free(array->data, array->allocated_size);
}
memset(array, 0, sizeof(avro_raw_array_t));
}
void avro_raw_array_clear(avro_raw_array_t *array)
{
array->element_count = 0;
}
int
avro_raw_array_ensure_size(avro_raw_array_t *array, size_t desired_count)
{
size_t required_size = array->element_size * desired_count;
if (array->allocated_size >= required_size) {
return 0;
}
/*
* Double the old size when reallocating.
*/
size_t new_size;
if (array->allocated_size == 0) {
/*
* Start with an arbitrary 10 items.
*/
new_size = 10 * array->element_size;
} else {
new_size = array->allocated_size * 2;
}
if (required_size > new_size) {
new_size = required_size;
}
array->data = avro_realloc(array->data, array->allocated_size, new_size);
if (array->data == NULL) {
avro_set_error("Cannot allocate space in array for %" PRIsz " elements",
desired_count);
return ENOMEM;
}
array->allocated_size = new_size;
return 0;
}
int
avro_raw_array_ensure_size0(avro_raw_array_t *array, size_t desired_count)
{
int rval;
size_t old_allocated_size = array->allocated_size;
check(rval, avro_raw_array_ensure_size(array, desired_count));
if (array->allocated_size > old_allocated_size) {
size_t extra_space = array->allocated_size - old_allocated_size;
void *buf = array->data;
memset((char *)buf + old_allocated_size, 0, extra_space);
}
return 0;
}
void *avro_raw_array_append(avro_raw_array_t *array)
{
int rval;
rval = avro_raw_array_ensure_size(array, array->element_count + 1);
if (rval) {
return NULL;
}
size_t offset = array->element_size * array->element_count;
array->element_count++;
return (char *)array->data + offset;
}
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