Method formatLine

/**
 * Format a line for the log file.
 *
 * @param   LogEntry  $entry  The log entry to format as a string.
 *
 * @return  String
 *
 * @since  3.9.0
 */
protected function formatLine(LogEntry $entry)
{
    // Set some default field values if not already set.
    if (!isset($entry->clientIP)) {
        $ip = IpHelper::getIp();
        if ($ip !== '') {
            $entry->clientIP = $ip;
        }
    }
    // If the time field is missing or the date field isn't only the date we need to rework it.
    if (\strlen($entry->date) != 10 || !isset($entry->time)) {
        // Get the date and time strings in GMT.
        $entry->datetime = $entry->date->toISO8601();
        $entry->time = $entry->date->format('H:i:s', false);
        $entry->date = $entry->date->format('Y-m-d', false);
    }
    // Get a list of all the entry keys and make sure they are upper case.
    $tmp = array_change_key_case(get_object_vars($entry), CASE_UPPER);
    // Decode the entry priority into an English string.
    $tmp['PRIORITY'] = $this->priorities[$entry->priority];
    // Fill in field data for the line.
    $line = $this->format;
    foreach ($this->fields as $field) {
        $line = str_replace('{' . $field . '}', $tmp[$field] ?? '-', $line);
    }
    return $line;
}