1 #ifndef HEADER_CURL_HASH_H 2 #define HEADER_CURL_HASH_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.haxx.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 ***************************************************************************/ 24 25 #include "curl_setup.h" 26 27 #include <stddef.h> 28 29 #include "llist.h" 30 31 /* Hash function prototype */ 32 typedef size_t (*hash_function) (void* key, 33 size_t key_length, 34 size_t slots_num); 35 36 /* 37 Comparator function prototype. Compares two keys. 38 */ 39 typedef size_t (*comp_function) (void* key1, 40 size_t key1_len, 41 void*key2, 42 size_t key2_len); 43 44 typedef void (*curl_hash_dtor)(void *); 45 46 struct curl_hash { 47 struct curl_llist **table; 48 49 /* Hash function to be used for this hash table */ 50 hash_function hash_func; 51 52 /* Comparator function to compare keys */ 53 comp_function comp_func; 54 curl_hash_dtor dtor; 55 int slots; 56 size_t size; 57 }; 58 59 struct curl_hash_element { 60 void *ptr; 61 char *key; 62 size_t key_len; 63 }; 64 65 struct curl_hash_iterator { 66 struct curl_hash *hash; 67 int slot_index; 68 struct curl_llist_element *current_element; 69 }; 70 71 int Curl_hash_init(struct curl_hash *h, 72 int slots, 73 hash_function hfunc, 74 comp_function comparator, 75 curl_hash_dtor dtor); 76 77 void *Curl_hash_add(struct curl_hash *h, void *key, size_t key_len, void *p); 78 int Curl_hash_delete(struct curl_hash *h, void *key, size_t key_len); 79 void *Curl_hash_pick(struct curl_hash *, void * key, size_t key_len); 80 void Curl_hash_apply(struct curl_hash *h, void *user, 81 void (*cb)(void *user, void *ptr)); 82 int Curl_hash_count(struct curl_hash *h); 83 void Curl_hash_destroy(struct curl_hash *h); 84 void Curl_hash_clean(struct curl_hash *h); 85 void Curl_hash_clean_with_criterium(struct curl_hash *h, void *user, 86 int (*comp)(void *, void *)); 87 size_t Curl_hash_str(void* key, size_t key_length, size_t slots_num); 88 size_t Curl_str_key_compare(void*k1, size_t key1_len, void*k2, 89 size_t key2_len); 90 91 void Curl_hash_start_iterate(struct curl_hash *hash, 92 struct curl_hash_iterator *iter); 93 struct curl_hash_element * 94 Curl_hash_next_element(struct curl_hash_iterator *iter); 95 96 void Curl_hash_print(struct curl_hash *h, 97 void (*func)(void *)); 98 99 100 #endif /* HEADER_CURL_HASH_H */ 101