1#include <assert.h> 2#include <stdio.h> 3#include <string.h> 4 5#include "json.h" 6#include "printbuf.h" 7 8struct myinfo { 9 int value; 10}; 11 12static int freeit_was_called = 0; 13static void freeit(json_object *jso, void *userdata) 14{ 15 struct myinfo *info = userdata; 16 printf("freeit, value=%d\n", info->value); 17 // Don't actually free anything here, the userdata is stack allocated. 18 freeit_was_called = 1; 19} 20static int custom_serializer(struct json_object *o, 21 struct printbuf *pb, 22 int level, 23 int flags) 24{ 25 sprintbuf(pb, "Custom Output"); 26 return 0; 27} 28 29int main(int argc, char **argv) 30{ 31 json_object *my_object; 32 33 MC_SET_DEBUG(1); 34 35 printf("Test setting, then resetting a custom serializer:\n"); 36 my_object = json_object_new_object(); 37 json_object_object_add(my_object, "abc", json_object_new_int(12)); 38 json_object_object_add(my_object, "foo", json_object_new_string("bar")); 39 40 printf("my_object.to_string(standard)=%s\n", json_object_to_json_string(my_object)); 41 42 struct myinfo userdata = { .value = 123 }; 43 json_object_set_serializer(my_object, custom_serializer, &userdata, freeit); 44 45 printf("my_object.to_string(custom serializer)=%s\n", json_object_to_json_string(my_object)); 46 47 printf("Next line of output should be from the custom freeit function:\n"); 48 freeit_was_called = 0; 49 json_object_set_serializer(my_object, NULL, NULL, NULL); 50 assert(freeit_was_called); 51 52 printf("my_object.to_string(standard)=%s\n", json_object_to_json_string(my_object)); 53 54 json_object_put(my_object); 55 56 // ============================================ 57 58 my_object = json_object_new_object(); 59 printf("Check that the custom serializer isn't free'd until the last json_object_put:\n"); 60 json_object_set_serializer(my_object, custom_serializer, &userdata, freeit); 61 json_object_get(my_object); 62 json_object_put(my_object); 63 printf("my_object.to_string(custom serializer)=%s\n", json_object_to_json_string(my_object)); 64 printf("Next line of output should be from the custom freeit function:\n"); 65 66 freeit_was_called = 0; 67 json_object_put(my_object); 68 assert(freeit_was_called); 69 70 return 0; 71} 72