errorviewer.inc.php
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<?php
/**
* $Id$
*
* KnowledgeTree Open Source Edition
* Document Management Made Simple
* Copyright (C) 2004 - 2007 The Jam Warehouse Software (Pty) Limited
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 3 as published by the
* Free Software Foundation.
*
* This program 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can contact The Jam Warehouse Software (Pty) Limited, Unit 1, Tramber Place,
* Blake Street, Observatory, 7925 South Africa. or email info@knowledgetree.com.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU General Public License version 3.
*
* In accordance with Section 7(b) of the GNU General Public License version 3,
* these Appropriate Legal Notices must retain the display of the "Powered by
* KnowledgeTree" logo and retain the original copyright notice. If the display of the
* logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
* must display the words "Powered by KnowledgeTree" and retain the original
* copyright notice.
* Contributor( s): ______________________________________
*
*/
class KTErrorViewerRegistry {
var $aViewers = array();
static function &getSingleton() {
static $singleton = null;
if (is_null($singleton))
{
$singleton = new KTErrorViewerRegistry();
}
return $singleton;
}
function register($sViewerClassName, $sHandledClass) {
$this->aViewers[strtolower($sHandledClass)] = $sViewerClassName;
}
function getViewer($oError) {
$sErrorClass = strtolower(get_class($oError));
// Try for direct hit first
$sClass = $sErrorClass;
$sHandlerClass = KTUtil::arrayGet($this->aViewers, $sClass);
if ($sHandlerClass) {
return new $sHandlerClass($oError);
}
// PHP 4.0.5 added get_parent_class - this offers us the
// best/first match
if (function_exists('get_parent_class')) {
while ($sClass = get_parent_class($sClass)) {
$sHandlerClass = KTUtil::arrayGet($this->aViewers, $sClass);
if ($sHandlerClass) {
return new $sHandlerClass($oError);
}
}
}
// Now try things the hard way - no best/first match (ick!)
// Reverse, since hopefully the best/first match will be added
// after the other matches.
foreach (array_reverse($this->aViewers) as $sHandlerClass => $sClass) {
if (is_a($oError, $sClass)) {
return new $sHandlerClass($oError);
}
}
// Just in case we have an unhandled i18n-friendly error
if (method_exists($oError, 'geti18nMessage')) {
return new KTStringErrorViewer($oError->getMessage());
}
// PEAR_Error should have caught things above, but just in case,
// check if getMessage is there, and use that:
if (method_exists($oError, 'getMessage')) {
return new KTStringErrorViewer($oError->getMessage());
}
// Check if we are a string
if (is_string($oError)) {
return new KTStringErrorViewer($oError);
}
// Give up.
return new KTStringErrorViewer(_kt("Unknown error"));
}
}
$oEVRegistry =& KTErrorViewerRegistry::getSingleton();
class KTErrorViewer {
function KTErrorViewer($oError) {
$this->oError = $oError;
}
function view() {
return $this->oError->getMessage();
}
function viewFull() {
return $this->oError->toString();
}
function page() {
$ret = "<h2>Error</h2>\n\n";
$ret .= "<dl>\n";
$ret .= "\t<dt>Error type</dt>\n";
$ret .= "\t<dd>" . $this->oError->getMessage() . "</dd>\n";
$sInfo = $this->parseUserInfo();
if ($sInfo) {
$ret .= "\t<dt>Additional information</dt>\n";
$ret .= "\t<dd>" . $sInfo . "</dd>\n";
}
$ret .= "</dl>\n";
return $ret;
}
function parseUserInfo() {
$sUserInfo = $this->oError->getUserInfo();
return $sUserInfo;
}
}
$oEVRegistry->register("KTErrorViewer", "PEAR_Error");
class KTDBErrorViewer extends KTErrorViewer {
function view() {
return _kt("Database error") . ": " . $this->oError->getMessage();
}
function page() {
$ret = "<h2>Database Error</h2>\n\n";
$ret .= "<dl>\n";
$ret .= "\t<dt>Error type</dt>\n";
$ret .= "\t<dd>" . $this->oError->getMessage() . "</dd>\n";
$sInfo = $this->parseUserInfo();
if ($sInfo) {
$ret .= "\t<dt>Additional information</dt>\n";
$ret .= "\t<dd>" . $sInfo . "</dd>\n";
}
$ret .= "</dl>\n";
return $ret;
}
function parseUserInfo() {
$sUserInfo = $this->oError->getUserInfo();
$aMatches = array();
if (preg_match("#^ ?\[nativecode=(Can't connect to local.*) \(13\)#", $sUserInfo, $aMatches)) {
return $aMatches[1];
}
return $sUserInfo;
}
}
$oEVRegistry->register("KTDBErrorViewer", "DB_Error");
class KTStringErrorViewer extends KTErrorViewer {
function view() {
return $this->oError;
}
function viewFull() {
return $this->oError;
}
}