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/*
* @file json_util.c
* @brief Utility for json data, it extracts value from json
* Copyright (c) 2017 Samsung Electronics Co., Ltd.
* This software is the confidential and proprietary information
* of Samsung Electronics, Inc. ("Confidential Information"). You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Samsung.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "json_util.h"
char *json_getString(char *data, char *key)
{
struct json_object *inputObj;
struct json_object *bodyObj;
enum json_type type;
char *ret_buf = NULL;
const char *buf = NULL;
int i, j = 0;
inputObj = json_tokener_parse(data);
type = json_object_get_type(inputObj);
if (type == json_type_object) {
if (json_object_object_get_ex(inputObj, key, &bodyObj)) {
buf = json_object_to_json_string_ext(bodyObj, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY);
ret_buf = malloc(strlen(buf) - 1);
if (ret_buf != NULL) {
memset(ret_buf, 0x00, strlen(buf) - 1); // "<-- exclude
for (i = 1, j = 0; i < strlen(buf) - 1; i++) { // "\ <-- exclude
if (buf[i] == '\\')
continue;
ret_buf[j++] = buf[i];
}
}
} else
printf("ERROR : no data\n");
}
json_object_put(inputObj);
printf("JSON>> ret_buf = %s\n", ret_buf);
return ret_buf;
}
int json_getNumber(char *data, char *key)
{
struct json_object *inputObj;
struct json_object *bodyObj;
enum json_type type;
int ret_num = 0;
inputObj = json_tokener_parse(data);
type = json_object_get_type(inputObj);
if (type == json_type_object) {
if (json_object_object_get_ex(inputObj, key, &bodyObj))
ret_num = json_object_get_int(bodyObj);
else
printf("ERROR : no data\n");
}
json_object_put(inputObj);
return ret_num;
}
char *json_getObject(char *data, char *key)
{
struct json_object *inputObj = NULL;
struct json_object *bodyObj = NULL;
const char *buf = NULL;
char *ret_buf = NULL;
inputObj = json_tokener_parse(data);
if (inputObj != NULL) {
if (json_object_object_get_ex(inputObj, key, &bodyObj)) {
if (json_object_get_type(bodyObj) == json_type_object) {
buf = json_object_to_json_string_ext(bodyObj, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY);
ret_buf = (char *)malloc(strlen(buf) + 1);
if (ret_buf != NULL) {
memset(ret_buf, 0x00, strlen(buf) + 1);
memcpy(ret_buf, buf, strlen(buf) + 1);
}
}
}
json_object_put(inputObj);
}
return ret_buf;
}
char *json_getArray(char *data, char *key)
{
struct json_object *inputObj, *bodyObj;
enum json_type type;
const char *buf = NULL;
char *ret_buf = NULL;
inputObj = json_tokener_parse(data);
type = json_object_get_type(inputObj);
if (type == json_type_object) {
if (json_object_object_get_ex(inputObj, key, &bodyObj)) {
type = json_object_get_type(bodyObj);
if (type == json_type_array) {
buf = json_object_to_json_string_ext(bodyObj, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY);
ret_buf = malloc(strlen(buf) + 1);
if (ret_buf != NULL) {
memset(ret_buf, 0x00, strlen(buf) + 1);
memcpy(ret_buf, buf, strlen(buf) + 1);
}
}
}
}
json_object_put(inputObj);
return ret_buf;
}
int json_getArrayLength(char *data)
{
struct json_object *inputObj;
enum json_type type;
int cnt = 0;
inputObj = json_tokener_parse(data);
type = json_object_get_type(inputObj);
if (type == json_type_array)
cnt = json_object_array_length(inputObj);
return cnt;
}
char *json_getStringFromArray(char *data, char *arrayKey, int arrayIndex, char *key)
{
struct json_object *inputObj;
struct json_object *bodyObj;
struct json_object *arrayObj;
struct json_object *elementObj;
char *ret_buf = NULL;
const char *buf = NULL;
int i, j = 0;
inputObj = json_tokener_parse(data);
if (json_object_object_get_ex(inputObj, arrayKey, &arrayObj)) {
elementObj = json_object_array_get_idx(arrayObj, arrayIndex);
if (json_object_object_get_ex(elementObj, key, &bodyObj)) {
buf = json_object_to_json_string_ext(bodyObj, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY);
ret_buf = malloc(strlen(buf) - 1);
if (ret_buf != NULL) {
memset(ret_buf, 0x00, strlen(buf) - 1); // "<-- exclude
for (i = 1, j = 0; i < strlen(buf) - 1; i++) { // "\ <-- exclude
if (buf[i] == '\\')
continue;
ret_buf[j++] = buf[i];
}
}
} else
printf("ERROR : no data\n");
json_object_put(inputObj);
} else
printf("ERROR : not found(%s)\n", arrayKey);
return ret_buf;
}
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