jsonParser.hpp

00001 #pragma once
00002 #include "ports.hpp"
00003 #include "Json.h"
00004 #include "ServerData.hpp"
00005 
00006 bool get_value_from_json(char *jsonSource, const char *keyName, char *outValue)
00007 {
00008     Json json(jsonSource, strlen(jsonSource), 40); //Can add 3rd argument if json is too big, default: 32 tokens
00009     if (!json.isValidJson())
00010     {
00011         toPc("Invalid JSON: %s", jsonSource);
00012         return false;
00013     }
00014     if (json.type(0) != JSMN_OBJECT)
00015     {
00016         toPc("Invalid JSON.  ROOT element is not Object: %s", jsonSource);
00017         return false;
00018     }
00019     int keyIndex = json.findKeyIndexIn(keyName, 0);
00020     if (keyIndex == -1)
00021     {
00022         //toPc("\"%s\" key not found in json: %s", keyName, jsonSource);
00023         return false;
00024     }
00025     int valueIndex = json.findChildIndexOf(keyIndex, -1);
00026     if (valueIndex > 0)
00027     {
00028         const char *valueStart = json.tokenAddress(valueIndex);
00029         int valueLength = json.tokenLength(valueIndex);
00030         strncpy(outValue, valueStart, valueLength);
00031         outValue[valueLength] = 0;
00032         return true;
00033     }
00034     return false;
00035 }
00036 
00037 void parse_server_event_from_json(char *jsonSource, ServerEvent *returnEvent)
00038 {
00039     char data[250]; //container for the json in "data"
00040     get_value_from_json(jsonSource, "event", returnEvent->event);
00041 
00042     bool data_parse_successful = get_value_from_json(jsonSource, "data", data);
00043     if (data_parse_successful)
00044     {
00045         char tmp[32];
00046         if (get_value_from_json(data, "game_id", tmp))
00047             returnEvent->data.game_id = atoi(tmp);
00048 
00049         if (get_value_from_json(data, "max_reflex_time", tmp))
00050             returnEvent->data.max_reflex_time = atoi(tmp);
00051 
00052         if (get_value_from_json(data, "number_of_target", tmp))
00053             returnEvent->data.number_of_target = atoi(tmp);
00054     }
00055 }