DataSift\Storyplayer\Cli\RuntimeConfigManager::loadRuntimeConfig PHP Method

    public function loadRuntimeConfig(Output $output)
    {
        // where is the config file?
        $configDir = $this->getConfigDir();
        $filename = $configDir . "/" . self::RUNTIME_FILENAME;
        // does the file exist?
        if (!is_file($filename)) {
            return new BaseObject();
        }
        // at this point, we should be able to load the config
        $raw = @file_get_contents($filename);
        if (FALSE === $raw) {
            $output->logCliError("unable to read config file '{$filename}'; permissions error?");
            exit(1);
        }
        // the config file may be empty
        if (strlen(rtrim($raw)) === 0) {
            return new BaseObject();
        }
        $config = @json_decode($raw);
        if (NULL === $config) {
            $output->logCliError("unable to parse JSON in config file '{$filename}'");
            exit(1);
        }
        // we need to convert the loaded config into our more powerful config
        // (at least for now)
        $enhancedConfig = new BaseObject();
        $enhancedConfig->mergeFrom($config);
        // all done
        return $enhancedConfig;
    }