/**
* Execute Lua code with the PHP extension.
*
* @param string $input
* @return array<string> Stdout and stderr
*/
private function executeWithExtension($input)
{
// We're using the extension - verify it exists
if (!class_exists('lua')) {
throw new LooahException("The Lua extension is unavailable");
}
// Create a lua instance and load the wrapper library
$lua = new lua();
try {
$lua->evaluatefile($this->getCompiledWrapperPath());
$lua->evaluate("wrap = make_wrapper({$this->maxLines}, {$this->maxRecursionDepth})");
$res = $lua->wrap($input);
return array($res[0], $res[1]);
} catch (Exception $e) {
throw new LooahException("Could not the evaluate Lua sandbox wrapper script");
}
}
