phplinter\Config::__construct PHP Method

    public function __construct($filename = null)
    {
        $conf = null;
        if ($filename) {
            if (file_exists($filename)) {
                $conf = json_decode(file_get_contents($filename), true);
                if (empty($conf)) {
                    echo 'Unable to parse input file';
                    switch (json_last_error()) {
                        case JSON_ERROR_NONE:
                            echo ' - No errors';
                            break;
                        case JSON_ERROR_DEPTH:
                            echo ' - Maximum stack depth exceeded';
                            break;
                        case JSON_ERROR_STATE_MISMATCH:
                            echo ' - Underflow or the modes mismatch';
                            break;
                        case JSON_ERROR_CTRL_CHAR:
                            echo ' - Unexpected control character found';
                            break;
                        case JSON_ERROR_SYNTAX:
                            echo ' - Syntax error, malformed JSON';
                            break;
                        case JSON_ERROR_UTF8:
                            echo ' - Malformed UTF-8 characters, possibly incorrectly encoded';
                            break;
                        default:
                            echo ' - Unknown error';
                            break;
                    }
                    die("\n");
                }
            } else {
                die("Config-file '{$filename}' not found or not readable...\n");
            }
        }
        $this->_parse($conf);
    }