STRING_HANDLE Map_ToJSON()

in src/map.c [604:700]

• 82 lines of code
• 14 McCabe index (conditional complexity)

STRING_HANDLE Map_ToJSON(MAP_HANDLE handle)
{
    STRING_HANDLE result;
    /*Codes_SRS_MAP_02_052: [If parameter handle is NULL then Map_ToJSON shall return NULL.] */
    if (handle == NULL)
    {
        /*Codes_SRS_MAP_02_051: [If any error occurs while producing the output, then Map_ToJSON shall fail and return NULL.] */
        result = NULL;
        LogError("invalid arg (NULL)");
    }
    else
    {
        /*Codes_SRS_MAP_02_048: [Map_ToJSON shall produce a STRING_HANDLE representing the content of the MAP.] */
        result = STRING_construct("{");
        if (result == NULL)
        {
            /*Codes_SRS_MAP_02_051: [If any error occurs while producing the output, then Map_ToJSON shall fail and return NULL.] */
            LogError("STRING_construct failed");
        }
        else
        {
            size_t i;
            MAP_HANDLE_DATA* handleData = handle;
            /*Codes_SRS_MAP_02_049: [If the MAP is empty, then Map_ToJSON shall produce the string "{}".*/
            bool breakFor = false; /*used to break out of for*/
            for (i = 0; (i < handleData->count) && (!breakFor); i++)
            {
                /*add one entry to the JSON*/
                /*Codes_SRS_MAP_02_050: [If the map has properties then Map_ToJSON shall produce the following string:{"name1":"value1", "name2":"value2" ...}]*/
                STRING_HANDLE key = STRING_new_JSON(handleData->keys[i]);
                if (key == NULL)
                {
                    /*Codes_SRS_MAP_02_051: [If any error occurs while producing the output, then Map_ToJSON shall fail and return NULL.] */
                    LogError("STRING_new_JSON failed");
                    STRING_delete(result);
                    result = NULL;
                    breakFor = true;
                }
                else
                {
                    STRING_HANDLE value = STRING_new_JSON(handleData->values[i]);
                    if (value == NULL)
                    {
                        /*Codes_SRS_MAP_02_051: [If any error occurs while producing the output, then Map_ToJSON shall fail and return NULL.] */
                        LogError("STRING_new_JSON failed");
                        STRING_delete(result);
                        result = NULL;
                        breakFor = true;
                    }
                    else
                    {
                        if (!(
                            ((i>0) ? (STRING_concat(result, ",") == 0) : 1) &&
                            (STRING_concat_with_STRING(result, key) == 0) &&
                            (STRING_concat(result, ":") == 0) &&
                            (STRING_concat_with_STRING(result, value) == 0)
                            ))
                        {
                            /*Codes_SRS_MAP_02_051: [If any error occurs while producing the output, then Map_ToJSON shall fail and return NULL.] */
                            LogError("failed to build the JSON");
                            STRING_delete(result);
                            result = NULL;
                            breakFor = true;
                        }
                        else
                        {
                            /*all nice, go to the next element in the map*/
                        }
                        STRING_delete(value);
                    }
                    STRING_delete(key);
                }
            }

            if (breakFor)
            {
                LogError("error happened during JSON string builder");
            }
            else
            {
                if (STRING_concat(result, "}") != 0)
                {
                    /*Codes_SRS_MAP_02_051: [If any error occurs while producing the output, then Map_ToJSON shall fail and return NULL.] */
                    LogError("failed to build the JSON");
                    STRING_delete(result);
                    result = NULL;
                }
                else
                {
                    /*return as is, JSON has been build*/
                }
            }
        }
    }
    return result;

}