shared: add nm_jansson_json_as_*() helpers to "shared/nm-glib-aux/nm-jansson.h"

1 files changed, 72 insertions, 0 deletions

diff --git a/shared/nm-glib-aux/nm-jansson.h b/shared/nm-glib-aux/nm-jansson.h
index 5a73231f05..dbf9f8b43a 100644
--- a/shared/nm-glib-aux/nm-jansson.h
+++ b/shared/nm-glib-aux/nm-jansson.h
@@ -44,6 +44,78 @@
 NM_AUTO_DEFINE_FCN0 (json_t *, _nm_auto_decref_json, json_decref)
 #define nm_auto_decref_json nm_auto(_nm_auto_decref_json)
 
+/*****************************************************************************/
+
+static inline int
+nm_jansson_json_as_bool (const json_t *elem,
+                         bool *out_val)
+{
+	if (!elem)
+		return 0;
+
+	if (!json_is_boolean (elem))
+		return -EINVAL;
+
+	NM_SET_OUT (out_val, json_boolean_value (elem));
+	return 1;
+}
+
+static inline int
+nm_jansson_json_as_int32 (const json_t *elem,
+                          gint32 *out_val)
+{
+	json_int_t v;
+
+	if (!elem)
+		return 0;
+
+	if (!json_is_integer (elem))
+		return -EINVAL;
+
+	v = json_integer_value (elem);
+	if (   v < (gint64) G_MININT32
+	    || v > (gint64) G_MAXINT32)
+		return -ERANGE;
+
+	NM_SET_OUT (out_val, v);
+	return 1;
+}
+
+static inline int
+nm_jansson_json_as_int (const json_t *elem,
+                        int *out_val)
+{
+	json_int_t v;
+
+	if (!elem)
+		return 0;
+
+	if (!json_is_integer (elem))
+		return -EINVAL;
+
+	v = json_integer_value (elem);
+	if (   v < (gint64) G_MININT
+	    || v > (gint64) G_MAXINT)
+		return -ERANGE;
+
+	NM_SET_OUT (out_val, v);
+	return 1;
+}
+
+static inline int
+nm_jansson_json_as_string (const json_t *elem,
+                           const char **out_val)
+{
+	if (!elem)
+		return 0;
+
+	if (!json_is_string (elem))
+		return -EINVAL;
+
+	NM_SET_OUT (out_val, json_string_value (elem));
+	return 1;
+}
+
 #endif /* WITH_JANSON */
 
 #endif  /* __NM_JANSSON_H__ */