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properties: add pw_properties_add(_keys)

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Add method to only add properties when they don't already exist.
This commit is contained in:
Wim Taymans 2019-12-12 16:28:27 +01:00
parent 3e1eeb1c03
commit 7a69c07afc
2 changed files with 58 additions and 0 deletions
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53
src/pipewire/properties.c
View file

@ -267,6 +267,59 @@ int pw_properties_update(struct pw_properties *props,
return changed;
}
/** Add properties
*
* \param props properties to add
* \param dict new properties
* \return the number of added properties
*
* The properties from \a dict that are not yet in \a props are added.
*
* \memberof pw_properties
*/
SPA_EXPORT
int pw_properties_add(struct pw_properties *props,
const struct spa_dict *dict)
{
uint32_t i;
int added = 0;
for (i = 0; i < dict->n_items; i++) {
if (pw_properties_get(props, dict->items[i].key) == NULL)
added += pw_properties_set(props, dict->items[i].key, dict->items[i].value);
}
return added;
}
/** Add keys
*
* \param props properties to add
* \param dict new properties
* \param keys a NULL terminated list of keys to add
* \return the number of added properties
*
* The properties with \a keys from \a dict that are not yet
* in \a props are added.
*
* \memberof pw_properties
*/
SPA_EXPORT
int pw_properties_add_keys(struct pw_properties *props,
const struct spa_dict *dict, const char *keys[])
{
uint32_t i;
int added = 0;
const char *str;
for (i = 0; keys[i]; i++) {
if ((str = spa_dict_lookup(dict, keys[i])) == NULL)
continue;
if (pw_properties_get(props, keys[i]) == NULL)
added += pw_properties_set(props, keys[i], str);
}
return added;
}
/** Free a properties object
*
* \param properties the properties to free

5
src/pipewire/properties.h
View file

@ -63,6 +63,11 @@ int pw_properties_update_keys(struct pw_properties *props,
int pw_properties_update(struct pw_properties *oldprops,
const struct spa_dict *dict);
int pw_properties_add(struct pw_properties *oldprops,
const struct spa_dict *dict);
int pw_properties_add_keys(struct pw_properties *oldprops,
const struct spa_dict *dict, const char *keys[]);
void pw_properties_clear(struct pw_properties *properties);
void