359 lines
12 KiB
PHP
Executable File
359 lines
12 KiB
PHP
Executable File
<?php
|
|
/* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
|
|
// +----------------------------------------------------------------------+
|
|
// | PEAR_Exception |
|
|
// +----------------------------------------------------------------------+
|
|
// | Copyright (c) 2004 The PEAR Group |
|
|
// +----------------------------------------------------------------------+
|
|
// | This source file is subject to version 3.0 of the PHP license, |
|
|
// | that is bundled with this package in the file LICENSE, and is |
|
|
// | available at through the world-wide-web at |
|
|
// | http://www.php.net/license/3_0.txt. |
|
|
// | If you did not receive a copy of the PHP license and are unable to |
|
|
// | obtain it through the world-wide-web, please send a note to |
|
|
// | license@php.net so we can mail you a copy immediately. |
|
|
// +----------------------------------------------------------------------+
|
|
// | Authors: Tomas V.V.Cox <cox@idecnet.com> |
|
|
// | Hans Lellelid <hans@velum.net> |
|
|
// | Bertrand Mansion <bmansion@mamasam.com> |
|
|
// | Greg Beaver <cellog@php.net> |
|
|
// +----------------------------------------------------------------------+
|
|
//
|
|
// $Id: Exception.php,v 1.4.2.2 2004/12/31 19:01:52 cellog Exp $
|
|
|
|
|
|
/**
|
|
* Base PEAR_Exception Class
|
|
*
|
|
* WARNING: This code should be considered stable, but the API is
|
|
* subject to immediate and drastic change, so API stability is
|
|
* at best alpha
|
|
*
|
|
* 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 $trace
|
|
*
|
|
* 4) Inherited methods from PHP Exception Class:
|
|
*
|
|
* __clone
|
|
* __construct
|
|
* getMessage
|
|
* getCode
|
|
* getFile
|
|
* getLine
|
|
* getTraceSafe
|
|
* getTraceSafeAsString
|
|
* __toString
|
|
*
|
|
* 5) Usage example
|
|
*
|
|
* <code>
|
|
* require_once 'PEAR/Exception.php';
|
|
*
|
|
* class Test {
|
|
* function foo() {
|
|
* throw new PEAR_Exception('Error Message', ERROR_CODE);
|
|
* }
|
|
* }
|
|
*
|
|
* function myLogger($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;
|
|
* }
|
|
* </code>
|
|
*
|
|
* @since PHP 5
|
|
* @package PEAR
|
|
* @version $Revision: 1.4.2.2 $
|
|
* @author Tomas V.V.Cox <cox@idecnet.com>
|
|
* @author Hans Lellelid <hans@velum.net>
|
|
* @author Bertrand Mansion <bmansion@mamasam.com>
|
|
*
|
|
*/
|
|
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, array $causes);
|
|
* PEAR_Exception(string $message, array $causes, int $code);
|
|
*/
|
|
public function __construct($message, $p2 = null, $p3 = null)
|
|
{
|
|
if (is_int($p2)) {
|
|
$code = $p2;
|
|
$this->cause = null;
|
|
} elseif ($p2 instanceof Exception || is_array($p2)) {
|
|
$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:
|
|
* <pre>
|
|
* array('name' => $name, 'context' => array(...))
|
|
* </pre>
|
|
* @return array
|
|
*/
|
|
public function getErrorData()
|
|
{
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Returns the exception that caused this exception to be thrown
|
|
* @access public
|
|
* @return Exception|array The context of the exception
|
|
*/
|
|
public function getCause()
|
|
{
|
|
return $this->cause;
|
|
}
|
|
|
|
/**
|
|
* Function must be public to call on caused exceptions
|
|
* @param array
|
|
*/
|
|
public function getCauseMessage(&$causes)
|
|
{
|
|
$trace = $this->getTraceSafe();
|
|
$cause = array('class' => get_class($this),
|
|
'message' => $this->message,
|
|
'file' => 'unknown',
|
|
'line' => 'unknown');
|
|
if (isset($trace[0])) {
|
|
if (isset($trace[0]['file'])) {
|
|
$cause['file'] = $trace[0]['file'];
|
|
$cause['line'] = $trace[0]['line'];
|
|
}
|
|
}
|
|
if ($this->cause instanceof PEAR_Exception) {
|
|
$this->cause->getCauseMessage($causes);
|
|
}
|
|
if (is_array($this->cause)) {
|
|
foreach ($this->cause as $cause) {
|
|
if ($cause instanceof PEAR_Exception) {
|
|
$cause->getCauseMessage($causes);
|
|
} elseif (is_array($cause) && isset($cause['message'])) {
|
|
// PEAR_ErrorStack warning
|
|
$causes[] = array(
|
|
'class' => $cause['package'],
|
|
'message' => $cause['message'],
|
|
'file' => isset($cause['context']['file']) ?
|
|
$cause['context']['file'] :
|
|
'unknown',
|
|
'line' => isset($cause['context']['line']) ?
|
|
$cause['context']['line'] :
|
|
'unknown',
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public function getTraceSafe()
|
|
{
|
|
if (!isset($this->_trace)) {
|
|
$this->_trace = $this->getTrace();
|
|
if (empty($this->_trace)) {
|
|
$backtrace = debug_backtrace();
|
|
$this->_trace = array($backtrace[count($backtrace)-1]);
|
|
}
|
|
}
|
|
return $this->_trace;
|
|
}
|
|
|
|
public function getErrorClass()
|
|
{
|
|
$trace = $this->getTraceSafe();
|
|
return $trace[0]['class'];
|
|
}
|
|
|
|
public function getErrorMethod()
|
|
{
|
|
$trace = $this->getTraceSafe();
|
|
return $trace[0]['function'];
|
|
}
|
|
|
|
public function __toString()
|
|
{
|
|
if (isset($_SERVER['REQUEST_URI'])) {
|
|
return $this->toHtml();
|
|
}
|
|
return $this->toText();
|
|
}
|
|
|
|
public function toHtml()
|
|
{
|
|
$trace = $this->getTraceSafe();
|
|
$causes = array();
|
|
$this->getCauseMessage($causes);
|
|
$html = '<table border="1" cellspacing="0">' . "\n";
|
|
foreach ($causes as $i => $cause) {
|
|
$html .= '<tr><td colspan="3" bgcolor="#ff9999">'
|
|
. str_repeat('-', $i) . ' <b>' . $cause['class'] . '</b>: '
|
|
. htmlspecialchars($cause['message']) . ' in <b>' . $cause['file'] . '</b> '
|
|
. 'on line <b>' . $cause['line'] . '</b>'
|
|
. "</td></tr>\n";
|
|
}
|
|
$html .= '<tr><td colspan="3" bgcolor="#aaaaaa" align="center"><b>Exception trace</b></td></tr>' . "\n"
|
|
. '<tr><td align="center" bgcolor="#cccccc" width="20"><b>#</b></td>'
|
|
. '<td align="center" bgcolor="#cccccc"><b>Function</b></td>'
|
|
. '<td align="center" bgcolor="#cccccc"><b>Location</b></td></tr>' . "\n";
|
|
|
|
foreach ($trace as $k => $v) {
|
|
$html .= '<tr><td align="center">' . $k . '</td>'
|
|
. '<td>';
|
|
if (!empty($v['class'])) {
|
|
$html .= $v['class'] . $v['type'];
|
|
}
|
|
$html .= $v['function'];
|
|
$args = array();
|
|
if (!empty($v['args'])) {
|
|
foreach ($v['args'] as $arg) {
|
|
if (is_null($arg)) $args[] = 'null';
|
|
elseif (is_array($arg)) $args[] = 'Array';
|
|
elseif (is_object($arg)) $args[] = 'Object('.get_class($arg).')';
|
|
elseif (is_bool($arg)) $args[] = $arg ? 'true' : 'false';
|
|
elseif (is_int($arg) || is_double($arg)) $args[] = $arg;
|
|
else {
|
|
$arg = (string)$arg;
|
|
$str = htmlspecialchars(substr($arg, 0, 16));
|
|
if (strlen($arg) > 16) $str .= '…';
|
|
$args[] = "'" . $str . "'";
|
|
}
|
|
}
|
|
}
|
|
$html .= '(' . implode(', ',$args) . ')'
|
|
. '</td>'
|
|
. '<td>' . $v['file'] . ':' . $v['line'] . '</td></tr>' . "\n";
|
|
}
|
|
$html .= '<tr><td align="center">' . ($k+1) . '</td>'
|
|
. '<td>{main}</td>'
|
|
. '<td> </td></tr>' . "\n"
|
|
. '</table>';
|
|
return $html;
|
|
}
|
|
|
|
public function toText()
|
|
{
|
|
$causes = array();
|
|
$this->getCauseMessage($causes);
|
|
$causeMsg = '';
|
|
foreach ($causes as $i => $cause) {
|
|
$causeMsg .= str_repeat(' ', $i) . $cause['class'] . ': '
|
|
. $cause['message'] . ' in ' . $cause['file']
|
|
. ' on line ' . $cause['line'] . "\n";
|
|
}
|
|
return $causeMsg . $this->getTraceAsString();
|
|
}
|
|
}
|
|
|
|
?>
|