#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include "json.h"
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#include "printbuf.h"
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struct myinfo
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{
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int value;
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};
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static int freeit_was_called = 0;
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static void freeit(json_object *jso, void *userdata)
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{
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struct myinfo *info = userdata;
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printf("freeit, value=%d\n", info->value);
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// Don't actually free anything here, the userdata is stack allocated.
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freeit_was_called = 1;
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}
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static int custom_serializer(struct json_object *o, struct printbuf *pb, int level, int flags)
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{
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sprintbuf(pb, "Custom Output");
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return 0;
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}
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int main(int argc, char **argv)
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{
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json_object *my_object, *my_sub_object;
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MC_SET_DEBUG(1);
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printf("Test setting, then resetting a custom serializer:\n");
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my_object = json_object_new_object();
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json_object_object_add(my_object, "abc", json_object_new_int(12));
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json_object_object_add(my_object, "foo", json_object_new_string("bar"));
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printf("my_object.to_string(standard)=%s\n", json_object_to_json_string(my_object));
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struct myinfo userdata = {.value = 123};
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json_object_set_serializer(my_object, custom_serializer, &userdata, freeit);
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printf("my_object.to_string(custom serializer)=%s\n",
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json_object_to_json_string(my_object));
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printf("Next line of output should be from the custom freeit function:\n");
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freeit_was_called = 0;
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json_object_set_serializer(my_object, NULL, NULL, NULL);
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assert(freeit_was_called);
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printf("my_object.to_string(standard)=%s\n", json_object_to_json_string(my_object));
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json_object_put(my_object);
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// ============================================
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my_object = json_object_new_object();
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printf("Check that the custom serializer isn't free'd until the last json_object_put:\n");
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json_object_set_serializer(my_object, custom_serializer, &userdata, freeit);
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json_object_get(my_object);
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json_object_put(my_object);
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printf("my_object.to_string(custom serializer)=%s\n",
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json_object_to_json_string(my_object));
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printf("Next line of output should be from the custom freeit function:\n");
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freeit_was_called = 0;
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json_object_put(my_object);
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assert(freeit_was_called);
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// ============================================
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my_object = json_object_new_object();
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my_sub_object = json_object_new_double(1.0);
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json_object_object_add(my_object, "double", my_sub_object);
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printf("Check that the custom serializer does not include nul byte:\n");
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json_object_set_serializer(my_sub_object, json_object_double_to_json_string, "%125.0f,", NULL);
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printf("my_object.to_string(custom serializer)=%s\n",
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json_object_to_json_string_ext(my_object, JSON_C_TO_STRING_NOZERO));
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json_object_put(my_object);
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return 0;
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}
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