75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-3.0-or-later
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* Copyright © 2016-2018 The TokTok team.
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* Copyright © 2014 Tox project.
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*/
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/**
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* Simple struct with functions to create a list which associates ids with data
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* -Allows for finding ids associated with data such as IPs or public keys in a short time
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* -Should only be used if there are relatively few add/remove calls to the list
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*/
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#ifndef C_TOXCORE_TOXCORE_LIST_H
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#define C_TOXCORE_TOXCORE_LIST_H
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#include <stdbool.h>
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#include <stdint.h>
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#include "attributes.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct BS_List {
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uint32_t n; // number of elements
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uint32_t capacity; // number of elements memory is allocated for
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uint32_t element_size; // size of the elements
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uint8_t *data; // array of elements
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int *ids; // array of element ids
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} BS_List;
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/** @brief Initialize a list.
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*
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* @param element_size is the size of the elements in the list.
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* @param initial_capacity is the number of elements the memory will be initially allocated for.
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*
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* @retval 1 success
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* @retval 0 failure
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*/
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non_null()
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int bs_list_init(BS_List *list, uint32_t element_size, uint32_t initial_capacity);
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/** Free a list initiated with list_init */
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nullable(1)
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void bs_list_free(BS_List *list);
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/** @brief Retrieve the id of an element in the list
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*
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* @retval >=0 id associated with data
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* @retval -1 failure
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*/
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non_null()
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int bs_list_find(const BS_List *list, const uint8_t *data);
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/** @brief Add an element with associated id to the list
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*
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* @retval true success
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* @retval false failure (data already in list)
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*/
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non_null()
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bool bs_list_add(BS_List *list, const uint8_t *data, int id);
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/** @brief Remove element from the list
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*
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* @retval true success
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* @retval false failure (element not found or id does not match)
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*/
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non_null()
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bool bs_list_remove(BS_List *list, const uint8_t *data, int id);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif
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