1 files changed, 222 insertions, 0 deletions
diff --git a/src/lib/json_util.c b/src/lib/json_util.c
new file mode 100755
index 0000000..15194aa
--- /dev/null
+++ b/src/lib/json_util.c
@@ -0,0 +1,222 @@
+/*
+ * @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;
+}
+
+double json_getDoubleFromArray(char *data, char *arrayKey, int arrayIndex, char *key)
+{
+	struct json_object *inputObj;
+	struct json_object *bodyObj;
+	struct json_object *arrayObj;
+	struct json_object *elementObj;
+	double ret_num = 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))
+			ret_num = json_object_get_double(bodyObj);
+		else
+			printf("ERROR : no data\n");
+
+		json_object_put(inputObj);
+	} else
+		printf("ERROR : not found(%s)\n", arrayKey);
+
+	return ret_num;
+}
+
+int json_getIntFromArray(char *data, char *arrayKey, int arrayIndex, char *key)
+{
+	struct json_object *inputObj;
+	struct json_object *bodyObj;
+	struct json_object *arrayObj;
+	struct json_object *elementObj;
+	int ret_num = 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))
+			ret_num = json_object_get_int(bodyObj);
+		else
+			printf("ERROR : no data\n");
+
+		json_object_put(inputObj);
+	} else
+		printf("ERROR : not found(%s)\n", arrayKey);
+
+	return ret_num;
+}