PipeWire 1.3.0
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dict.h
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1/* Simple Plugin API */
2/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
3/* SPDX-License-Identifier: MIT */
4
5#ifndef SPA_DICT_H
6#define SPA_DICT_H
7
8#ifdef __cplusplus
9extern "C" {
10#endif
11
12#include <string.h>
13
14#include <spa/utils/defs.h>
15
26struct spa_dict_item {
27 const char *key;
28 const char *value;
29};
30
31#define SPA_DICT_ITEM(key,value) ((struct spa_dict_item) { (key), (value) })
32#define SPA_DICT_ITEM_INIT(key,value) SPA_DICT_ITEM(key,value)
34struct spa_dict {
35#define SPA_DICT_FLAG_SORTED (1<<0)
36 uint32_t flags;
37 uint32_t n_items;
38 const struct spa_dict_item *items;
39};
40
41#define SPA_DICT(items,n_items) ((struct spa_dict) { 0, (n_items), (items) })
42#define SPA_DICT_ARRAY(items) SPA_DICT((items),SPA_N_ELEMENTS(items))
43#define SPA_DICT_ITEMS(...) SPA_DICT_ARRAY(((struct spa_dict_item[]) { __VA_ARGS__}))
45#define SPA_DICT_INIT(items,n_items) SPA_DICT(items,n_items)
46#define SPA_DICT_INIT_ARRAY(items) SPA_DICT_ARRAY(items)
47
48#define spa_dict_for_each(item, dict) \
49 for ((item) = (dict)->items; \
50 (item) < &(dict)->items[(dict)->n_items]; \
51 (item)++)
53static inline int spa_dict_item_compare(const void *i1, const void *i2)
55 const struct spa_dict_item *it1 = (const struct spa_dict_item *)i1,
56 *it2 = (const struct spa_dict_item *)i2;
57 return strcmp(it1->key, it2->key);
58}
60static inline void spa_dict_qsort(struct spa_dict *dict)
62 if (dict->n_items > 0)
63 qsort((void*)dict->items, dict->n_items, sizeof(struct spa_dict_item),
67
68static inline const struct spa_dict_item *spa_dict_lookup_item(const struct spa_dict *dict,
69 const char *key)
70{
71 const struct spa_dict_item *item;
72
74 dict->n_items > 0) {
75 struct spa_dict_item k = SPA_DICT_ITEM_INIT(key, NULL);
76 item = (const struct spa_dict_item *)bsearch(&k,
77 (const void *) dict->items, dict->n_items,
78 sizeof(struct spa_dict_item),
80 if (item != NULL)
81 return item;
82 } else {
83 spa_dict_for_each(item, dict) {
84 if (!strcmp(item->key, key))
85 return item;
86 }
87 }
88 return NULL;
89}
90
91static inline const char *spa_dict_lookup(const struct spa_dict *dict, const char *key)
92{
93 const struct spa_dict_item *item = spa_dict_lookup_item(dict, key);
94 return item ? item->value : NULL;
95}
96
101#ifdef __cplusplus
102} /* extern "C" */
103#endif
105#endif /* SPA_DICT_H */
spa/utils/defs.h
#define SPA_DICT_ITEM_INIT(key, value)
Definition dict.h:39
static void spa_dict_qsort(struct spa_dict *dict)
Definition dict.h:73
static int spa_dict_item_compare(const void *i1, const void *i2)
Definition dict.h:66
static const struct spa_dict_item * spa_dict_lookup_item(const struct spa_dict *dict, const char *key)
Definition dict.h:81
static const char * spa_dict_lookup(const struct spa_dict *dict, const char *key)
Definition dict.h:104
#define SPA_DICT_FLAG_SORTED
items are sorted
Definition dict.h:43
#define spa_dict_for_each(item, dict)
Definition dict.h:61
#define SPA_FLAG_SET(field, flag)
Definition defs.h:93
#define SPA_FLAG_IS_SET(field, flag)
Definition defs.h:90
spa/utils/string.h
Definition dict.h:31
const char * key
Definition dict.h:32
const char * value
Definition dict.h:33
Definition dict.h:41
const struct spa_dict_item * items
Definition dict.h:46
uint32_t n_items
Definition dict.h:45
uint32_t flags
Definition dict.h:44