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/**
* @file empty.c
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief Built-in empty type plugin.
*
* Copyright (c) 2019-2021 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#include "plugins_types.h"
#include <stdint.h>
#include <stdlib.h>
#include "libyang.h"
/* additional internal headers for some useful simple macros */
#include "common.h"
#include "compat.h"
#include "plugins_internal.h" /* LY_TYPE_*_STR */
/**
* @page howtoDataLYB LYB Binary Format
* @subsection howtoDataLYBTypesEmpty empty (built-in)
*
* | Size (B) | Mandatory | Type | Meaning |
* | :------ | :-------: | :--: | :-----: |
* | 0 | yes | `void` | none |
*/
LIBYANG_API_DEF LY_ERR
lyplg_type_store_empty(const struct ly_ctx *ctx, const struct lysc_type *type, const void *value, size_t value_len,
uint32_t options, LY_VALUE_FORMAT UNUSED(format), void *UNUSED(prefix_data), uint32_t hints,
const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
struct ly_err_item **err)
{
LY_ERR ret = LY_SUCCESS;
/* init storage */
memset(storage, 0, sizeof *storage);
storage->realtype = type;
/* check hints */
ret = lyplg_type_check_hints(hints, value, value_len, type->basetype, NULL, err);
LY_CHECK_GOTO(ret, cleanup);
/* validation */
if (value_len) {
ret = ly_err_new(err, LY_EVALID, LYVE_DATA, NULL, NULL, "Invalid empty value length %zu.", value_len);
goto cleanup;
}
/* store canonical value, it always is */
if (options & LYPLG_TYPE_STORE_DYNAMIC) {
ret = lydict_insert_zc(ctx, (char *)value, &storage->_canonical);
options &= ~LYPLG_TYPE_STORE_DYNAMIC;
LY_CHECK_GOTO(ret, cleanup);
} else {
ret = lydict_insert(ctx, "", value_len, &storage->_canonical);
LY_CHECK_GOTO(ret, cleanup);
}
cleanup:
if (options & LYPLG_TYPE_STORE_DYNAMIC) {
free((void *)value);
}
if (ret) {
lyplg_type_free_simple(ctx, storage);
}
return ret;
}
/**
* @brief Plugin information for empty type implementation.
*
* Note that external plugins are supposed to use:
*
* LYPLG_TYPES = {
*/
const struct lyplg_type_record plugins_empty[] = {
{
.module = "",
.revision = NULL,
.name = LY_TYPE_EMPTY_STR,
.plugin.id = "libyang 2 - empty, version 1",
.plugin.store = lyplg_type_store_empty,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_simple,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_simple,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 0,
},
{0}
};
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