jedchecker/source/administrator/components/com_jedchecker/script.php

<?php
/**
 * @author Daniel Dimitrov - compojoom.com
 * @date: 02.06.12
 *
 * @copyright  Copyright (C) 2008 - 2012 compojoom.com . All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

defined('_JEXEC') or die('Restricted access');


class com_jedcheckerInstallerScript
{
    protected $extension = 'com_jedchecker';

    function preflight( $type, $parent ) {
        $this->parent = $parent;
        if (version_compare(PHP_VERSION, '5.3.1', '<')) {
            $this->loadLanguage();
            Jerror::raiseWarning(null, JText::sprintf('COM_JEDCHECKER_PHP_VERSION_INCOMPATIBLE', PHP_VERSION, '5.3.6'));
            return false;
        }
    }

    /**
     * Update cleans out any old rules.
     *
     * @param   JInstallerComponent  $parent  Is the class calling this method.
     *
     * @return  bool|null  If this returns false, Joomla will abort the update and undo everything already done.
     */
    public function update($parent)
    {
        $this->loadLanguage();

        // Doing it this way in case there are other old rules to be deleted
        $oldRules = array('htmlindexes');

        foreach ($oldRules as $rule)
        {
            $rulePhpFile = JPATH_ADMINISTRATOR . '/components/' . $this->extension . '/libraries/rules/' . $rule . '.php';
            $ruleIniFile = JPATH_ADMINISTRATOR . '/components/' . $this->extension . '/libraries/rules/' . $rule . '.ini';

            // Remove the rule's php file
            if(file_exists($rulePhpFile))
            {
                if(JFile::delete($rulePhpFile))
                {
                    $msg = JText::sprintf('COM_JEDCHECKER_OLD_RULE_X_PHP_FILE_REMOVED', $rule);
                }
                else
                {
                    $msg = JText::sprintf('COM_JEDCHECKER_OLD_RULE_X_PHP_FILE_NOT_REMOVED', $rule);
                }
                echo "<p>$msg</p>";
            }

            // Remove the rule's ini file
            if(file_exists($ruleIniFile))
            {
                if(JFile::delete($ruleIniFile))
                {
                    $msg = JText::sprintf('COM_JEDCHECKER_OLD_RULE_X_INI_FILE_REMOVED', $rule);
                }
                else
                {
                    $msg = JText::sprintf('COM_JEDCHECKER_OLD_RULE_X_INI_FILE_NOT_REMOVED', $rule);
                }
                echo "<p>$msg</p>";
            }
        }
    }

    public function loadLanguage()
    {
        $extension = $this->extension;
        $jlang = JFactory::getLanguage();
        $path = $this->parent->getParent()->getPath('source') . '/administrator';
        $jlang->load($extension, $path, 'en-GB', true);
        $jlang->load($extension, $path, $jlang->getDefault(), true);
        $jlang->load($extension, $path, null, true);
        $jlang->load($extension . '.sys', $path, 'en-GB', true);
        $jlang->load($extension . '.sys', $path, $jlang->getDefault(), true);
        $jlang->load($extension . '.sys', $path, null, true);
    }
}