protected function initScriptVars()
{
if (class_exists('\\Mage')) {
$this->scriptVars['${magento.root}'] = $this->getApplication()->getMagentoRootFolder();
$this->scriptVars['${magento.version}'] = \Mage::getVersion();
$this->scriptVars['${magento.edition}'] = is_callable(array('\\Mage', 'getEdition')) ? \Mage::getEdition() : 'Community';
}
$this->scriptVars['${php.version}'] = substr(phpversion(), 0, strpos(phpversion(), '-'));
$this->scriptVars['${magerun.version}'] = $this->getApplication()->getVersion();
$this->scriptVars['${script.file}'] = $this->_scriptFilename;
$this->scriptVars['${script.dir}'] = dirname($this->_scriptFilename);
}