<?php
//
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 2002-2003 Tereshchenko Andrey. All rights reserved. |
// +----------------------------------------------------------------------+
// | This source file is free software; you can redistribute it and/or |
// | modify it under the terms of the GNU Lesser General Public |
// | License as published by the Free Software Foundation; either |
// | version 2.1 of the License, or (at your option) any later version. |
// | |
// | This source file is distributed in the hope that it will be useful, |
// | but WITHOUT ANY WARRANTY; without even the implied warranty of |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
// | Lesser General Public License for more details. |
// +----------------------------------------------------------------------+
// | Author: Tereshchenko Andrey <tereshchenko@anter.com.ua> |
// +----------------------------------------------------------------------+
//
// $Id: Error.php,v 1.0 2004/02/05 17:18:10 anter Exp $
/**
* @package myXTree
*/
/**
* Base class for other PEAR classes.
*/
require_once('PEAR.php');
PEAR::setErrorHandling(PEAR_ERROR_RETURN, E_USER_ERROR);
/**
* Contains user-defined error handler
*
* @global string $GLOBALS['_ErrorHandler']
* @name $_ErrorHandler
*/
$GLOBALS['_ErrorHandler'] = null;
/**
* Design mode flag.
*
* If you the designer of a class where error occurred, use the design mode
* "true" for errors debug. If you the user of a class where error occurred, use
* the design mode "false".
*
* @global boolean $GLOBALS['_Design_Mode']
* @name $_Design_Mode
*/
$GLOBALS['_Design_Mode'] = false;
/**
* Levels of call.
*/
define('TOP_LEVEL', 0);
define('FUNC_LEVEL', 1);
define('CLASS_LEVEL', 2);
/**
* Generates a user-level error/warning/notice message.
*
* Is identical to the PHP function "trigger_error()", but it uses possibilities
* of PHP function "debug_backtrace()" for display of the debug information of
* caller function. See error_test.php file for example.
*
* Function "debug_backtrace()" present in PHP since version 4.3.0. In previous
* versions "raiseError()" calls "trigger_error()".
*
* @param string error message.
* @param integer optional parameter, error type, default type E_USER_ERROR.
* @param integer optional parameter, level of caller function, default level FUNC_LEVEL.
* @see setErrorHandler
*/
function raiseError($message, $type = null, $callLevel = FUNC_LEVEL)
{
if (!function_exists('debug_backtrace')) {
return trigger_error($message, $type);
}
$format = "<br/><b>%s:</b> %s in <b>%s</b> on line <b>%s</b><br/>";
$trace = debug_backtrace();
$file = ($trace[$callLevel]['file']) ? $trace[$callLevel]['file'] : $trace[TOP_LEVEL]['file'];
$line = ($trace[$callLevel]['line']) ? $trace[$callLevel]['line'] : $trace[TOP_LEVEL]['line'];
$type = ($type === null) ? E_USER_ERROR : $type;
$error_reporting = ini_get('error_reporting');
if (function_exists($GLOBALS['_ErrorHandler'])) {
$GLOBALS['_ErrorHandler']($message, $type, $file, $line);
} else {
if ($error_reporting & $type) {
switch ($type) {
case E_USER_NOTICE:
$message = sprintf($format, "Notice", $message, $file, $line);
print($message);
break;
case E_USER_WARNING:
$message = sprintf($format, "Warning", $message, $file, $line);
print($message);
break;
case E_USER_ERROR:
$message = sprintf($format, "Fatal error", $message, $file, $line);
exit($message);
}
}
}
}
/**
* Sets a user-defined error handler function.
*
* Is identical to the PHP function "set_error_handler()", but for
* "raiseError()".
*
* The user function needs to accept four parameters: a string describing the
* error, the error type, the filename in which the error occurred, and the line
* number in which the error occurred.
*
* @param string function name.
* @see raiseError
*/
function setErrorHandler($handler)
{
if (function_exists($handler)) {
$GLOBALS['_ErrorHandler'] = $handler;
} else {
raiseError("function '$handler' not exists", E_USER_WARNING);
}
}
/**
* Returns name of caller function.
*
* It uses possibilities of PHP function "debug_backtrace()", which present in
* PHP since version 4.3.0.
*
* @return string function name if present.
* @see getCallerClass
*/
function getCallerMethod()
{
if (function_exists('debug_backtrace')) {
$trace = debug_backtrace();
return $trace[2]['function'];
} else {
raiseError("function 'debug_backtrace' not exists in this version PHP", E_USER_NOTICE);
}
}
/**
* Returns name of class of caller method.
*
* It uses possibilities of PHP function "debug_backtrace()", which present in
* PHP since version 4.3.0.
*
* @return string class name if present.
* @see getCallerMethod
*/
function getCallerClass()
{
if (function_exists('debug_backtrace')) {
$trace = debug_backtrace();
return $trace[2]['class'];
} else {
raiseError("function 'debug_backtrace' not exists in this version PHP", E_USER_NOTICE);
}
}
/**
* Error class.
*
* This class works when mode PEAR_ERROR_RETURN is established. In other modes
* he works as is stipulated in PEAR error handling. See PEAR manual for details.
*
* @access public
*/
class Error extends PEAR_Error
{
/**
* Name in lowercase of class, that must be skipped.
*
* Usually a class which errors are processed.
*
* @var string
* @access public
*/
var $skipClass = 'error';
/**
* Error constructor.
*
* @return object Error
* @access public
*/
function Error($message = 'unknown error', $code = null,
$mode = null, $options = null, $userinfo = null)
{
$this->PEAR_Error($message, $code, $mode, $options, $userinfo);
if ($this->mode & PEAR_ERROR_RETURN) {
$callLevel = ($GLOBALS['_Design_Mode']) ? 4 : $this->_skipClass();
raiseError($this->getMessage().', userinfo: '.$this->getUserInfo(), $this->level, $callLevel);
}
}
/**
* Returns the index of first occurence of method of class specified.
*
* @return integer
* @access private
*/
function _skipClass()
{
for ($i = sizeof($this->backtrace); $i >= 0; $i--) {
if ($this->backtrace[$i]['class'] == $this->skipClass ||
get_parent_class($this->backtrace[$i]['class']) == $this->skipClass) {
return $i;
}
}
}
}
?>
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