errorviewer.inc.php
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<?php
/**
* $Id$
*
* The contents of this file are subject to the KnowledgeTree Public
* License Version 1.1.2 ("License"); You may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.knowledgetree.com/KPL
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights and
* limitations under the License.
*
* All copies of the Covered Code must include on each user interface screen:
* (i) the "Powered by KnowledgeTree" logo and
* (ii) the KnowledgeTree copyright notice
* in the same form as they appear in the distribution. See the License for
* requirements.
*
* The Original Code is: KnowledgeTree Open Source
*
* The Initial Developer of the Original Code is The Jam Warehouse Software
* (Pty) Ltd, trading as KnowledgeTree.
* Portions created by The Jam Warehouse Software (Pty) Ltd are Copyright
* (C) 2007 The Jam Warehouse Software (Pty) Ltd;
* All Rights Reserved.
* Contributor( s): ______________________________________
*
*/
class KTErrorViewerRegistry {
var $aViewers = array();
function &getSingleton() {
$oRegistry =& KTUtil::arrayGet($GLOBALS, 'KTErrorViewerRegistry');
if ($oRegistry) {
return $oRegistry;
}
$GLOBALS['KTErrorViewerRegistry'] =& new KTErrorViewerRegistry();
return $GLOBALS['KTErrorViewerRegistry'];
}
function register($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;
}
}