//opt/remi/php70/root/usr/share/pear/
* @author Hans Lellelid
* @author Bertrand Mansion
* @author Greg Beaver
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @link http://pear.php.net/package/PEAR
* @since File available since Release 1.3.3
*/
/**
* Base PEAR_Exception Class
*
* 1) Features:
*
* - Nestable exceptions (throw new PEAR_Exception($msg, $prev_exception))
* - Definable triggers, shot when exceptions occur
* - Pretty and informative error messages
* - Added more context info available (like class, method or cause)
* - cause can be a PEAR_Exception or an array of mixed
* PEAR_Exceptions/PEAR_ErrorStack warnings
* - callbacks for specific exception classes and their children
*
* 2) Ideas:
*
* - Maybe a way to define a 'template' for the output
*
* 3) Inherited properties from PHP Exception Class:
*
* protected $message
* protected $code
* protected $line
* protected $file
* private $trace
*
* 4) Inherited methods from PHP Exception Class:
*
* __clone
* __construct
* getMessage
* getCode
* getFile
* getLine
* getTraceSafe
* getTraceSafeAsString
* __toString
*
* 5) Usage example
*
*
* require_once 'PEAR/Exception.php';
*
* class Test {
* function foo() {
* throw new PEAR_Exception('Error Message', ERROR_CODE);
* }
* }
*
* function myLogger($pear_exception) {
* echo $pear_exception->getMessage();
* }
* // each time a exception is thrown the 'myLogger' will be called
* // (its use is completely optional)
* PEAR_Exception::addObserver('myLogger');
* $test = new Test;
* try {
* $test->foo();
* } catch (PEAR_Exception $e) {
* print $e;
* }
*
*
* @category pear
* @package PEAR
* @author Tomas V.V.Cox
* @author Hans Lellelid
* @author Bertrand Mansion
* @author Greg Beaver
* @copyright 1997-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version Release: 1.10.15
* @link http://pear.php.net/package/PEAR
* @since Class available since Release 1.3.3
*
*/
class PEAR_Exception extends Exception
{
const OBSERVER_PRINT = -2;
const OBSERVER_TRIGGER = -4;
const OBSERVER_DIE = -8;
protected $cause;
private static $_observers = array();
private static $_uniqueid = 0;
private $_trace;
/**
* Supported signatures:
* - PEAR_Exception(string $message);
* - PEAR_Exception(string $message, int $code);
* - PEAR_Exception(string $message, Exception $cause);
* - PEAR_Exception(string $message, Exception $cause, int $code);
* - PEAR_Exception(string $message, PEAR_Error $cause);
* - PEAR_Exception(string $message, PEAR_Error $cause, int $code);
* - PEAR_Exception(string $message, array $causes);
* - PEAR_Exception(string $message, array $causes, int $code);
* @param string exception message
* @param int|Exception|PEAR_Error|array|null exception cause
* @param int|null exception code or null
*/
public function __construct($message, $p2 = null, $p3 = null)
{
if (is_int($p2)) {
$code = $p2;
$this->cause = null;
} elseif (is_object($p2) || is_array($p2)) {
// using is_object allows both Exception and PEAR_Error
if (is_object($p2) && !($p2 instanceof Exception)) {
if (!class_exists('PEAR_Error') || !($p2 instanceof PEAR_Error)) {
throw new PEAR_Exception('exception cause must be Exception, ' .
'array, or PEAR_Error');
}
}
$code = $p3;
if (is_array($p2) && isset($p2['message'])) {
// fix potential problem of passing in a single warning
$p2 = array($p2);
}
$this->cause = $p2;
} else {
$code = null;
$this->cause = null;
}
parent::__construct($message, $code);
$this->signal();
}
/**
* @param mixed $callback - A valid php callback, see php func is_callable()
* - A PEAR_Exception::OBSERVER_* constant
* - An array(const PEAR_Exception::OBSERVER_*,
* mixed $options)
* @param string $label The name of the observer. Use this if you want
* to remove it later with removeObserver()
*/
public static function addObserver($callback, $label = 'default')
{
self::$_observers[$label] = $callback;
}
public static function removeObserver($label = 'default')
{
unset(self::$_observers[$label]);
}
/**
* @return int unique identifier for an observer
*/
public static function getUniqueId()
{
return self::$_uniqueid++;
}
private function signal()
{
foreach (self::$_observers as $func) {
if (is_callable($func)) {
call_user_func($func, $this);
continue;
}
settype($func, 'array');
switch ($func[0]) {
case self::OBSERVER_PRINT :
$f = (isset($func[1])) ? $func[1] : '%s';
printf($f, $this->getMessage());
break;
case self::OBSERVER_TRIGGER :
$f = (isset($func[1])) ? $func[1] : E_USER_NOTICE;
trigger_error($this->getMessage(), $f);
break;
case self::OBSERVER_DIE :
$f = (isset($func[1])) ? $func[1] : '%s';
die(printf($f, $this->getMessage()));
break;
default:
trigger_error('invalid observer type', E_USER_WARNING);
}
}
}
/**
* Return specific error information that can be used for more detailed
* error messages or translation.
*
* This method may be overridden in child exception classes in order
* to add functionality not present in PEAR_Exception and is a placeholder
* to define API
*
* The returned array must be an associative array of parameter => value like so:
*