2 * collectd - src/meta_data.h
3 * Copyright (C) 2008-2011 Florian octo Forster
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:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
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.
24 * Florian octo Forster <octo at collectd.org>
35 #define MD_TYPE_STRING 1
36 #define MD_TYPE_SIGNED_INT 2
37 #define MD_TYPE_UNSIGNED_INT 3
38 #define MD_TYPE_DOUBLE 4
39 #define MD_TYPE_BOOLEAN 5
42 typedef struct meta_data_s meta_data_t;
44 meta_data_t *meta_data_create(void);
45 meta_data_t *meta_data_clone(meta_data_t *orig);
46 int meta_data_clone_merge(meta_data_t **dest, meta_data_t *orig);
47 void meta_data_destroy(meta_data_t *md);
49 int meta_data_exists(meta_data_t *md, const char *key);
50 int meta_data_type(meta_data_t *md, const char *key);
51 int meta_data_toc(meta_data_t *md, char ***toc);
52 int meta_data_delete(meta_data_t *md, const char *key);
54 int meta_data_add_string(meta_data_t *md, const char *key, const char *value);
55 int meta_data_add_signed_int(meta_data_t *md, const char *key, int64_t value);
56 int meta_data_add_unsigned_int(meta_data_t *md, const char *key,
58 int meta_data_add_double(meta_data_t *md, const char *key, double value);
59 int meta_data_add_boolean(meta_data_t *md, const char *key, _Bool value);
61 int meta_data_get_string(meta_data_t *md, const char *key, char **value);
62 int meta_data_get_signed_int(meta_data_t *md, const char *key, int64_t *value);
63 int meta_data_get_unsigned_int(meta_data_t *md, const char *key,
65 int meta_data_get_double(meta_data_t *md, const char *key, double *value);
66 int meta_data_get_boolean(meta_data_t *md, const char *key, _Bool *value);
68 /* Returns the value as a string, regardless of the type. */
69 int meta_data_as_string(meta_data_t *md, const char *key, char **value);
71 #endif /* META_DATA_H */