1 /**
2 * collectd - src/utils_fbhash.h
3 * Copyright (C) 2009 Florian octo Forster
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Florian octo Forster <octo at collectd.org>
25 **/
27 #ifndef UTILS_FBHASH_H
28 #define UTILS_FBHASH_H 1
30 /*
31 * File-backed hash
32 *
33 * This module reads a file of the form
34 * key: value
35 * into a hash, which can then be queried. The file is given to `fbh_create',
36 * the hash is queried using `fbh_get'. If the file is changed during runtime,
37 * it will automatically be re-read.
38 */
40 struct fbhash_s;
41 typedef struct fbhash_s fbhash_t;
43 fbhash_t *fbh_create(const char *file);
44 void fbh_destroy(fbhash_t *h);
46 /* Returns the value as a newly allocated `char *'. It's the caller's
47 * responsibility to free this memory. */
48 char *fbh_get(fbhash_t *h, const char *key);
50 #endif /* UTILS_FBHASH_H */
52 /* vim: set sw=2 sts=2 et fdm=marker : */