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ucm: cfg-save - allow to save the sub-tree including root keys

Browse source 
The leading '+' in the keys specification add the key prefix
(sub-tree root identification) to the saved configuration.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2021-05-18 12:22:46 +02:00
parent 225d3aecb6
commit 0ee4642a69
2 changed files with 20 additions and 6 deletions
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22
src/ucm/main.c
View file

@ -573,20 +573,27 @@ static int execute_sysw(const char *sysw)
return 0;
}
int _snd_config_save_node_value(snd_config_t *n, snd_output_t *out, unsigned int level);
static int execute_cfgsave(snd_use_case_mgr_t *uc_mgr, const char *filename)
{
snd_config_t *config = uc_mgr->local_config;
char *file, *root;
snd_output_t *out;
bool with_root = false;
int err = 0;
file = strdup(filename);
if (!file)
return -ENOMEM;
root = strchr(file, ':');
if (root) {
*root = '\0';
err = snd_config_search(config, root + 1, &config);
if (config && root) {
*root++ = '\0';
if (*root == '+') {
with_root = true;
root++;
}
err = snd_config_search(config, root, &config);
if (err < 0) {
uc_error("Unable to find subtree '%s'", root);
goto _err;
@ -598,7 +605,14 @@ static int execute_cfgsave(snd_use_case_mgr_t *uc_mgr, const char *filename)
uc_error("unable to open file '%s': %s", file, snd_strerror(err));
goto _err;
}
err = snd_config_save(config, out);
if (!config || snd_config_is_empty(config))
goto _err;
if (with_root) {
snd_output_printf(out, "%s ", root);
err = _snd_config_save_node_value(config, out, 0);
} else {
err = snd_config_save(config, out);
}
snd_output_close(out);
if (err < 0) {
uc_error("unable to save configuration: %s", snd_strerror(err));