test_msgpack.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

#include "cJSON.h"
#include "cJSON_MsgPack.h"

void hex_dump(uint8_t *data, int len, int line_size)
{
    int i;
    for (i = 0; i < len; i++)
    {
        if (i % line_size == 0)
        {
            printf("\n");
        }
        printf("%02x ", data[i]);
    }
    printf("\n");
}

int main(int argc, char *argv[])
{
    uint8_t *msgpack = NULL;
    size_t len = 0;
    cJSON *json = cJSON_CreateObject();
    cJSON *node1 = cJSON_AddObjectToObject(json, "node1");
    cJSON *node2 = cJSON_AddObjectToObject(json, "node2");
    cJSON *node3 = cJSON_AddObjectToObject(json, "node3");

    cJSON_AddStringToObject(node1, "name", "node1");
    cJSON_AddNumberToObject(node1, "value", 1);

    cJSON_AddStringToObject(node2, "name", "node2");
    cJSON_AddNumberToObject(node2, "value", 2);

    printf("json root parent: %p\n", json->parent);

    msgpack = cJSON_PrintMsgPack(json, &len);

    if (msgpack && len)
    {
        hex_dump(msgpack, len, 16);
    }

    return 0;
}