103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
#ifndef HEADER_CURL_HASH_H
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#define HEADER_CURL_HASH_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curl_setup.h"
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#include <stddef.h>
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#include "llist.h"
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/* Hash function prototype */
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typedef size_t (*hash_function) (void *key,
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size_t key_length,
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size_t slots_num);
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/*
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Comparator function prototype. Compares two keys.
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*/
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typedef size_t (*comp_function) (void *key1,
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size_t key1_len,
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void *key2,
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size_t key2_len);
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typedef void (*Curl_hash_dtor)(void *);
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struct Curl_hash {
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struct Curl_llist *table;
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/* Hash function to be used for this hash table */
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hash_function hash_func;
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/* Comparator function to compare keys */
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comp_function comp_func;
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Curl_hash_dtor dtor;
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int slots;
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size_t size;
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};
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struct Curl_hash_element {
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struct Curl_llist_element list;
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void *ptr;
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size_t key_len;
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char key[1]; /* allocated memory following the struct */
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};
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struct Curl_hash_iterator {
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struct Curl_hash *hash;
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int slot_index;
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struct Curl_llist_element *current_element;
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};
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void Curl_hash_init(struct Curl_hash *h,
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int slots,
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hash_function hfunc,
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comp_function comparator,
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Curl_hash_dtor dtor);
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void *Curl_hash_add(struct Curl_hash *h, void *key, size_t key_len, void *p);
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int Curl_hash_delete(struct Curl_hash *h, void *key, size_t key_len);
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void *Curl_hash_pick(struct Curl_hash *, void *key, size_t key_len);
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void Curl_hash_apply(struct Curl_hash *h, void *user,
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void (*cb)(void *user, void *ptr));
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#define Curl_hash_count(h) ((h)->size)
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void Curl_hash_destroy(struct Curl_hash *h);
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void Curl_hash_clean(struct Curl_hash *h);
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void Curl_hash_clean_with_criterium(struct Curl_hash *h, void *user,
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int (*comp)(void *, void *));
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size_t Curl_hash_str(void *key, size_t key_length, size_t slots_num);
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size_t Curl_str_key_compare(void *k1, size_t key1_len, void *k2,
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size_t key2_len);
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void Curl_hash_start_iterate(struct Curl_hash *hash,
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struct Curl_hash_iterator *iter);
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struct Curl_hash_element *
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Curl_hash_next_element(struct Curl_hash_iterator *iter);
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void Curl_hash_print(struct Curl_hash *h,
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void (*func)(void *));
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#endif /* HEADER_CURL_HASH_H */
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