| 1 | /* Hash table declarations.
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| 2 | Copyright (C) 2000 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GNU Wget.
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| 5 |
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| 6 | GNU Wget is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | GNU Wget is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with Wget; if not, write to the Free Software
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| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 |
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| 20 | In addition, as a special exception, the Free Software Foundation
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| 21 | gives permission to link the code of its release of Wget with the
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| 22 | OpenSSL project's "OpenSSL" library (or with modified versions of it
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| 23 | that use the same license as the "OpenSSL" library), and distribute
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| 24 | the linked executables. You must obey the GNU General Public License
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| 25 | in all respects for all of the code used other than "OpenSSL". If you
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| 26 | modify this file, you may extend this exception to your version of the
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| 27 | file, but you are not obligated to do so. If you do not wish to do
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| 28 | so, delete this exception statement from your version. */
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| 29 |
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| 30 | #ifndef HASH_H
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| 31 | #define HASH_H
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| 32 |
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| 33 | struct hash_table;
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| 34 |
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| 35 | struct hash_table *hash_table_new PARAMS ((int,
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| 36 | unsigned long (*) (const void *),
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| 37 | int (*) (const void *,
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| 38 | const void *)));
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| 39 | void hash_table_destroy PARAMS ((struct hash_table *));
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| 40 |
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| 41 | void *hash_table_get PARAMS ((const struct hash_table *, const void *));
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| 42 | int hash_table_get_pair PARAMS ((const struct hash_table *, const void *,
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| 43 | void *, void *));
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| 44 | int hash_table_contains PARAMS ((const struct hash_table *, const void *));
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| 45 |
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| 46 | void hash_table_put PARAMS ((struct hash_table *, const void *, void *));
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| 47 | int hash_table_remove PARAMS ((struct hash_table *, const void *));
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| 48 | void hash_table_clear PARAMS ((struct hash_table *));
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| 49 |
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| 50 | void hash_table_map PARAMS ((struct hash_table *,
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| 51 | int (*) (void *, void *, void *),
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| 52 | void *));
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| 53 | int hash_table_count PARAMS ((const struct hash_table *));
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| 54 |
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| 55 | struct hash_table *make_string_hash_table PARAMS ((int));
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| 56 | struct hash_table *make_nocase_string_hash_table PARAMS ((int));
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| 57 |
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| 58 | unsigned long hash_pointer PARAMS ((const void *));
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| 59 |
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| 60 | /* From XEmacs, and hence from Dragon book. */
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| 61 |
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| 62 | #define GOOD_HASH 65599 /* prime number just over 2^16; Dragon book, p. 435 */
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| 63 | #define HASH2(a,b) (GOOD_HASH * (a) + (b))
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| 64 | #define HASH3(a,b,c) (GOOD_HASH * HASH2 (a,b) + (c))
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| 65 | #define HASH4(a,b,c,d) (GOOD_HASH * HASH3 (a,b,c) + (d))
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| 66 | #define HASH5(a,b,c,d,e) (GOOD_HASH * HASH4 (a,b,c,d) + (e))
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| 67 | #define HASH6(a,b,c,d,e,f) (GOOD_HASH * HASH5 (a,b,c,d,e) + (f))
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| 68 | #define HASH7(a,b,c,d,e,f,g) (GOOD_HASH * HASH6 (a,b,c,d,e,f) + (g))
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| 69 | #define HASH8(a,b,c,d,e,f,g,h) (GOOD_HASH * HASH7 (a,b,c,d,e,f,g) + (h))
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| 70 | #define HASH9(a,b,c,d,e,f,g,h,i) (GOOD_HASH * HASH8 (a,b,c,d,e,f,g,h) + (i))
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| 71 |
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| 72 | #endif /* HASH_H */
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