/**
* walk over a JSON object and call the walker function on each object
* It passes a pointer to the value, so the function can change the
* value in place if desired
*
* The payload is passed to the walker function at each call, this can be used to
* pass additional information to the function, or for the function to store information
* in a reentrant manner
*/
void json_walk_object(JSON_object obj, json_objWalker_t walker, void *payload)
{
if( ! obj ){
return; //return if it is a null object
}
json_walk_object(obj->left, walker,payload);
walker(obj->key, &(obj->value), payload);
json_walk_object(obj->right, walker,payload);
}
int json_walk_node(char * js, jsmntok_t *t, int lvl)
{
if (t->type == JSMN_OBJECT) {
return json_walk_object(js, t, lvl);
}
if (t->type == JSMN_ARRAY) {
return json_walk_array(js, t, lvl);
}
if (t->type == JSMN_STRING) {
// printf("STRING: \"%s\"\n", json_token_tostr(js, t));
printf("\"%s\"", json_token_tostr(js, t));
return 1;
}
if (t->type == JSMN_PRIMITIVE) {
// printf("PRIMITIVE: \"%s\"\n", json_token_tostr(js, t));
printf("%s", json_token_tostr(js, t));
return 1;
}
printf("Invalid response:");
return -1;
}
int json_parse_dump(char * js, jsmntok_t * t, void * ptr)
{
char s[JSON_STR_LEN_MAX + 1];
if (t->start == JSMN_NULL || t->end == JSMN_NULL)
return -JSON_ERR_INVALID_TOKEN;
if (ptr == NULL)
return -JSON_ERR_NULL_POINTER;
switch (t->type) {
case JSMN_OBJECT:
return json_walk_object(stdout, js, t, 1);
case JSMN_ARRAY:
return json_walk_array(stdout, js, t, 1);
case JSMN_STRING:
json_token_tostr(s, JSON_STR_LEN_MAX, js, t);
fprintf(stdout, "\"%s\"", s);
return 1;
case JSMN_PRIMITIVE:
json_token_tostr(s, JSON_STR_LEN_MAX, js, t);
fprintf(stdout, "%s", s);
return 1;
}
return -JSON_ERR_INVALID_TYPE;
}
int json_walk_node(FILE * f, char * js, jsmntok_t *t, int lvl)
{
char s[JSON_STR_LEN_MAX + 1];
if(t->start == JSMN_NULL || t->end == JSMN_NULL) {
DCC_LOG(LOG_ERROR, "parameter invalid!");
return -1;
}
switch (t->type) {
case JSMN_OBJECT:
return json_walk_object(f, js, t, lvl);
case JSMN_ARRAY:
return json_walk_array(f, js, t, lvl);
case JSMN_STRING:
json_token_tostr(s, JSON_STR_LEN_MAX, js, t);
fprintf(f, "\"%s\"", s);
return 1;
case JSMN_PRIMITIVE:
json_token_tostr(s, JSON_STR_LEN_MAX, js, t);
fprintf(f, "%s", s);
return 1;
}
DCC_LOG(LOG_ERROR, "Invalid type");
return -1;
}
int json_traverse(char * js, jsmntok_t *t)
{
int ret;
if (t->type != JSMN_OBJECT) {
printf("Invalid response: root element must be an object.");
return -1;
}
ret = json_walk_object(js, t, 0);
printf("\n");
return ret;
}
int json_dump(FILE * f, char * js, jsmntok_t *t)
{
int ret;
/* Should never reach uninitialized tokens */
if(t->start == JSMN_NULL || t->end == JSMN_NULL) {
DCC_LOG(LOG_ERROR, "parameter invalid!");
return -1;
}
if (t->type != JSMN_OBJECT) {
DCC_LOG(LOG_ERROR, "root element must be an object.");
return -1;
}
ret = json_walk_object(f, js, t, 0);
printf("\n");
return ret;
}
