Joomla! Documentation™

Description

Custom uninstall method

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Syntax

uninstall($id)

Parameter Name	Default Value	Description
$id		$id The id of the package to uninstall

Returns

boolean True on success

Defined in

libraries/joomla/installer/adapters/package.php

Importing

jimport( 'joomla.installer.adapters.package' );

Source Body

function uninstall($id)
{
        // Initialise variables.
        $row    = null;
        $retval = true;

        $row = & JTable::getInstance('extension');
        $row->load($id);

        $manifestFile = JPATH_MANIFESTS.DS.'packages' . DS . $row->get('element') .'.xml';
        $manifest = new JPackageManifest($manifestFile);

        // Set the plugin root path
        $this->parent->setPath('extension_root', JPATH_MANIFESTS.DS.'packages'.DS.$manifest->packagename);

        // Because libraries may not have their own folders we cannot use the standard method of finding an installation manifest
        if (file_exists($manifestFile))
        {
                $xml =JFactory::getXML($manifestFile);

                // If we cannot load the xml file return false
                if (!$xml)
                {
                        JError::raiseWarning(100, JText::_('Package').' '.JText::_('Uninstall').': '.JText::_('Could not load manifest file'));
                        return false;
                }

                /*
                 * Check for a valid XML root tag.
                 * @todo: Remove backwards compatability in a future version
                 * Should be 'extension', but for backward compatability we will accept 'install'.
                 */
                if ($xml->getName() != 'install' && $xml->getName() != 'extension')
                {
                        JError::raiseWarning(100, JText::_('Package').' '.JText::_('Uninstall').': '.JText::_('Invalid manifest file'));
                        return false;
                }

                $error = false;
                foreach ($manifest->filelist as $extension)
                {
                        $tmpInstaller = new JInstaller();
                        $id = $this->_getExtensionID($extension->type, $extension->id, $extension->client, $extension->group);
                        $client = JApplicationHelper::getClientInfo($extension->client,true);
                        if (!$tmpInstaller->uninstall($extension->type, $id, $client->id))
                        {
                                $error = true;
                                JError::raiseWarning(100, JText::_('Package').' '.JText::_('Uninstall').': '.
//                                                      JText::_('There was an error removing an extension!') . ' ' .
                                                JText::_('This extension may have already been uninstalled or might not have been uninstall properly') .': ' .
                                                basename($extension->filename));
                                //$this->parent->abort(JText::_('Package').' '.JText::_('Uninstall').': '.JText::_('There was an error removing an extension, try reinstalling:') . basename($extension->filename));
                                //return false;
                        }
                }
                $this->parent->removeFiles($xml->languages);
                // clean up manifest file after we're done if there were no errors
                if (!$error) {
                        JFile::delete($manifestFile);
                }
                else {
                        JError::raiseWarning(100, JText::_('Package'). ' ' . JText::_('Uninstall'). ': '.
                                JText::_('Errors were detected, manifest file not removed!'));
                }
        }
        else
        {
                JError::raiseWarning(100, JText::_('Package').' '.JText::_('Uninstall').': '.
                        JText::_('Manifest File invalid or not found') . $id);
                return false;
        }

        return $retval;
}

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