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<?php
/**
* @package Duplicator\Installer
*/
namespace Duplicator\Installer\Bootstrap;
use Exception;
class LogHandler
{
/** @var bool */
private static $initialized = false;
/** @var callable */
private static $logCallback = null;
/**
* This function only initializes the error handler the first time it is called
*
* @param callable $logCallback log callback
*
* @return void
*/
public static function initErrorHandler($logCallback)
{
if (!self::$initialized) {
if (!is_callable($logCallback)) {
throw new Exception('Log callback must be callable');
}
self::$logCallback = $logCallback;
@set_error_handler(array(__CLASS__, 'error'));
@register_shutdown_function(array(__CLASS__, 'shutdown'));
self::$initialized = true;
}
}
/**
* Error handler
*
* @param integer $errno Error level
* @param string $errstr Error message
* @param string $errfile Error file
* @param integer $errline Error line
*
* @return bool
*/
public static function error($errno, $errstr, $errfile, $errline)
{
switch ($errno) {
case E_ERROR:
$log_message = self::getMessage($errno, $errstr, $errfile, $errline);
if (call_user_func(self::$logCallback, $log_message) === false) {
$log_message = "Can\'t wrinte logfile\n\n" . $log_message;
}
die('<pre>' . htmlspecialchars($log_message) . '</pre>');
case E_NOTICE:
case E_WARNING:
default:
$log_message = self::getMessage($errno, $errstr, $errfile, $errline);
call_user_func(self::$logCallback, $log_message);
break;
}
return true;
}
/**
* Get message from error
*
* @param int $errno errno
* @param string $errstr message
* @param string $errfile file
* @param int $errline line
*
* @return string
*/
private static function getMessage($errno, $errstr, $errfile, $errline)
{
$result = '[PHP ERR]';
switch ($errno) {
case E_ERROR:
$result .= '[FATAL]';
break;
case E_WARNING:
$result .= '[WARN]';
break;
case E_NOTICE:
$result .= '[NOTICE]';
break;
default:
$result .= '[ISSUE]';
break;
}
$result .= ' MSG:';
$result .= $errstr;
$result .= ' [CODE:' . $errno . '|FILE:' . $errfile . '|LINE:' . $errline . ']';
return $result;
}
/**
* Shutdown handler
*
* @return void
*/
public static function shutdown()
{
if (($error = error_get_last())) {
LogHandler::error($error['type'], $error['message'], $error['file'], $error['line']);
}
}
}