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-rw-r--r--src/til_settings.c41
-rw-r--r--src/til_settings.h1
2 files changed, 42 insertions, 0 deletions
diff --git a/src/til_settings.c b/src/til_settings.c
index 0e59651..fb21af7 100644
--- a/src/til_settings.c
+++ b/src/til_settings.c
@@ -338,6 +338,47 @@ const char * til_settings_get_value_by_idx(const til_settings_t *settings, unsig
/* helper for the common setup case of describing a setting when absent or not yet described.
* returns:
* -1 on error, res_* will be untouched in this case.
+ * 0 when setting is present and described, res_setting and res_setting_bis(optional) will be populated w/non-NULL, and res_desc NULL in this case.
+ * 1 when setting is either present but undescribed, or absent (and undescribed), res_* will be populated but res_setting{,_bis} may be NULL if absent and simply described.
+ */
+int til_settings_get_and_describe_setting(const til_settings_t *settings, const til_setting_spec_t *spec, til_setting_t **res_setting, til_setting_t **res_setting_bis, const til_setting_desc_t **res_desc)
+{
+ til_setting_t *setting;
+
+ assert(settings);
+ assert(spec);
+ assert(res_setting);
+
+ setting = til_settings_get_setting_by_key(settings, spec->key, NULL);
+ if (!setting || !setting->desc) {
+ int r;
+
+ assert(res_desc);
+
+ r = til_setting_desc_new(settings, spec, res_desc);
+ if (r < 0)
+ return r;
+
+ *res_setting = setting;
+ if (res_setting_bis)
+ *res_setting_bis = setting;
+
+ return 1;
+ }
+
+ *res_setting = setting;
+ if (res_setting_bis)
+ *res_setting_bis = setting;
+ if (res_desc)
+ *res_desc = NULL;
+
+ return 0;
+}
+
+
+/* helper for the common setup case of describing a setting when absent or not yet described.
+ * returns:
+ * -1 on error, res_* will be untouched in this case.
* 0 when setting is present and described, res_value and res_setting will be populated w/non-NULL, and res_desc NULL in this case.
* 1 when setting is either present but undescribed, or absent (and undescribed), res_* will be populated but res_{value,setting} may be NULL if absent and simply described.
*/
diff --git a/src/til_settings.h b/src/til_settings.h
index cbfc599..be01b5b 100644
--- a/src/til_settings.h
+++ b/src/til_settings.h
@@ -58,6 +58,7 @@ til_setting_t * til_settings_get_setting_by_idx(const til_settings_t *settings,
const char * til_settings_get_value_by_idx(const til_settings_t *settings, unsigned idx, til_setting_t **res_setting);
til_setting_t * til_settings_add_value(til_settings_t *settings, const char *key, const char *value);
void til_settings_reset_descs(til_settings_t *settings);
+int til_settings_get_and_describe_setting(const til_settings_t *settings, const til_setting_spec_t *spec, til_setting_t **res_setting, til_setting_t **res_setting_bis, const til_setting_desc_t **res_desc);
int til_settings_get_and_describe_value(const til_settings_t *settings, const til_setting_spec_t *spec, const char **res_value, til_setting_t **res_setting, const til_setting_desc_t **res_desc);
char * til_settings_as_arg(const til_settings_t *settings);
char * til_settings_as_arg_unfiltered(const til_settings_t *settings);
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