feat: Add sentry_value_get_key()

Author: limbonaut

include/sentry.h

@@ -290,6 +290,12 @@ SENTRY_API sentry_value_t sentry_value_get_by_key_owned(
 SENTRY_API sentry_value_t sentry_value_get_by_key_owned_n(
     sentry_value_t value, const char *k, size_t k_len);
 
+/**
+ * Returns a key in a map by index.  If missing or value is not a map,
+ * an empty string is returned.
+ */
+SENTRY_API const char *sentry_value_get_key(sentry_value_t value, size_t index);
+
 /**
  * Looks up a value in a list by index.  If missing a null value is returned.
  * The returned value is borrowed.

src/sentry_value.c

@@ -778,6 +778,18 @@ sentry_value_get_by_key_owned(sentry_value_t value, const char *k)
     return rv;
 }
 
+const char *
+sentry_value_get_key(sentry_value_t value, size_t index) {
+    const thing_t *thing = value_as_thing(value);
+    if (thing && thing_get_type(thing) == THING_TYPE_OBJECT) {
+        obj_t *o = thing->payload._ptr;
+        if (index < o->len) {
+            return o->pairs[index].k;
+        }
+    }
+    return "";
+}
+
 sentry_value_t
 sentry_value_get_by_index(sentry_value_t value, size_t index)
 {