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Annotation of embedaddon/curl/lib/hash.h, revision 1.1

1.1     ! misho       1: #ifndef HEADER_CURL_HASH_H
        !             2: #define HEADER_CURL_HASH_H
        !             3: /***************************************************************************
        !             4:  *                                  _   _ ____  _
        !             5:  *  Project                     ___| | | |  _ \| |
        !             6:  *                             / __| | | | |_) | |
        !             7:  *                            | (__| |_| |  _ <| |___
        !             8:  *                             \___|\___/|_| \_\_____|
        !             9:  *
        !            10:  * Copyright (C) 1998 - 2019, 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:   struct curl_llist_element list;
        !            61:   void   *ptr;
        !            62:   size_t key_len;
        !            63:   char   key[1]; /* allocated memory following the struct */
        !            64: };
        !            65: 
        !            66: struct curl_hash_iterator {
        !            67:   struct curl_hash *hash;
        !            68:   int slot_index;
        !            69:   struct curl_llist_element *current_element;
        !            70: };
        !            71: 
        !            72: int Curl_hash_init(struct curl_hash *h,
        !            73:                    int slots,
        !            74:                    hash_function hfunc,
        !            75:                    comp_function comparator,
        !            76:                    curl_hash_dtor dtor);
        !            77: 
        !            78: void *Curl_hash_add(struct curl_hash *h, void *key, size_t key_len, void *p);
        !            79: int Curl_hash_delete(struct curl_hash *h, void *key, size_t key_len);
        !            80: void *Curl_hash_pick(struct curl_hash *, void *key, size_t key_len);
        !            81: void Curl_hash_apply(struct curl_hash *h, void *user,
        !            82:                      void (*cb)(void *user, void *ptr));
        !            83: #define Curl_hash_count(h) ((h)->size)
        !            84: void Curl_hash_destroy(struct curl_hash *h);
        !            85: void Curl_hash_clean(struct curl_hash *h);
        !            86: void Curl_hash_clean_with_criterium(struct curl_hash *h, void *user,
        !            87:                                     int (*comp)(void *, void *));
        !            88: size_t Curl_hash_str(void *key, size_t key_length, size_t slots_num);
        !            89: size_t Curl_str_key_compare(void *k1, size_t key1_len, void *k2,
        !            90:                             size_t key2_len);
        !            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 */