/* detect circular references */
array = json_to_array(json);
if(array->visited)
- return -1;
+ goto array_error;
array->visited = 1;
n = json_array_size(json);
if(dump("[", 1, data))
- return -1;
+ goto array_error;
if(n == 0) {
array->visited = 0;
return dump("]", 1, data);
}
if(dump_indent(flags, depth + 1, 0, dump, data))
- return -1;
+ goto array_error;
for(i = 0; i < n; ++i) {
if(do_dump(json_array_get(json, i), flags, depth + 1,
dump, data))
- return -1;
+ goto array_error;
if(i < n - 1)
{
if(dump(",", 1, data) ||
dump_indent(flags, depth + 1, 1, dump, data))
- return -1;
+ goto array_error;
}
else
{
if(dump_indent(flags, depth, 0, dump, data))
- return -1;
+ goto array_error;
}
}
array->visited = 0;
return dump("]", 1, data);
+
+ array_error:
+ array->visited = 0;
+ return -1;
}
case JSON_OBJECT:
/* detect circular references */
object = json_to_object(json);
if(object->visited)
- return -1;
+ goto object_error;
object->visited = 1;
iter = json_object_iter((json_t *)json);
if(dump("{", 1, data))
- return -1;
+ goto object_error;
if(!iter) {
object->visited = 0;
return dump("}", 1, data);
}
if(dump_indent(flags, depth + 1, 0, dump, data))
- return -1;
+ goto object_error;
if(flags & JSON_SORT_KEYS)
{
size = json_object_size(json);
keys = malloc(size * sizeof(const char *));
if(!keys)
- return -1;
+ goto object_error;
i = 0;
while(iter)
do_dump(value, flags, depth + 1, dump, data))
{
free(keys);
- return -1;
+ goto object_error;
}
if(i < size - 1)
dump_indent(flags, depth + 1, 1, dump, data))
{
free(keys);
- return -1;
+ goto object_error;
}
}
else
if(dump_indent(flags, depth, 0, dump, data))
{
free(keys);
- return -1;
+ goto object_error;
}
}
}
if(dump(separator, separator_length, data) ||
do_dump(json_object_iter_value(iter), flags, depth + 1,
dump, data))
- return -1;
+ goto object_error;
if(next)
{
if(dump(",", 1, data) ||
dump_indent(flags, depth + 1, 1, dump, data))
- return -1;
+ goto object_error;
}
else
{
if(dump_indent(flags, depth, 0, dump, data))
- return -1;
+ goto object_error;
}
iter = next;
object->visited = 0;
return dump("}", 1, data);
+
+ object_error:
+ object->visited = 0;
+ return -1;
}
default:
json_decref(json);
+ /* Construct a JSON object/array with a circular reference:
+
+ object: {"a": {"b": {"c": <circular reference to $.a>}}}
+ array: [[[<circular reference to the $[0] array>]]]
+
+ Encode it, remove the circular reference and encode again.
+ */
+ json = json_object();
+ json_object_set_new(json, "a", json_object());
+ json_object_set_new(json_object_get(json, "a"), "b", json_object());
+ json_object_set(json_object_get(json_object_get(json, "a"), "b"), "c",
+ json_object_get(json, "a"));
+
+ if(json_dumps(json, 0))
+ fail("json_dumps encoded a circular reference!");
+
+ json_object_del(json_object_get(json_object_get(json, "a"), "b"), "c");
+
+ result = json_dumps(json, 0);
+ if(!result || strcmp(result, "{\"a\": {\"b\": {}}}"))
+ fail("json_dumps failed!");
+ free(result);
+
+ json_decref(json);
+
+ json = json_array();
+ json_array_append_new(json, json_array());
+ json_array_append_new(json_array_get(json, 0), json_array());
+ json_array_append(json_array_get(json_array_get(json, 0), 0),
+ json_array_get(json, 0));
+
+ if(json_dumps(json, 0))
+ fail("json_dumps encoded a circular reference!");
+
+ json_array_remove(json_array_get(json_array_get(json, 0), 0), 0);
+
+ result = json_dumps(json, 0);
+ if(!result || strcmp(result, "[[[]]]"))
+ fail("json_dumps failed!");
+ free(result);
+
+ json_decref(json);
+
return 0;
}