/usr/include/libkres/set.h is in libkres-dev 2.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | /* Copyright (C) 2015-2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/**
* @file set.h
* @brief A set abstraction implemented on top of map.
*
* @note The API is based on map.h, see it for more examples.
*
* # Example usage:
*
* @code{.c}
* set_t set = set_make();
*
* // Insert keys
* if (set_add(&set, "princess") != 0 ||
* set_add(&set, "prince") != 0 ||
* set_add(&set, "leia") != 0) {
* fail();
* }
*
* // Test membership
* if (set_contains(&set, "leia")) {
* success();
* }
*
* // Prefix search
* int i = 0;
* int count(const char *s, void *n) { (*(int *)n)++; return 0; }
* if (set_walk_prefixed(set, "princ", count, &i) == 0) {
* printf("%d matches\n", i);
* }
*
* // Delete
* if (set_del(&set, "badkey") != 0) {
* fail(); // No such key
* }
*
* // Clear the set
* set_clear(&set);
* @endcode
*
* \addtogroup generics
* @{
*/
#pragma once
#include <stddef.h>
#include "map.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef map_t set_t;
typedef int (set_walk_cb)(const char *, void *);
/*! Creates an new, empty critbit set */
#define set_make() \
map_make()
/*! Returns non-zero if set contains str */
#define set_contains(set, str) \
map_contains((set), (str))
/*! Inserts str into set, returns 0 on suceess */
#define set_add(set, str) \
map_set((set), (str), (void *)1)
/*! Deletes str from the set, returns 0 on suceess */
#define set_del(set, str) \
map_del((set), (str))
/*! Clears the given set */
#define set_clear(set) \
map_clear(set)
/*! Calls callback for all strings in map */
#define set_walk(set, callback, baton) \
map_walk_prefixed((set), "", (callback), (baton))
/*! Calls callback for all strings in set with the given prefix */
#define set_walk_prefixed(set, prefix, callback, baton) \
map_walk_prefixed((set), (prefix), (callback), (baton))
#ifdef __cplusplus
}
#endif
/** @} */
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