protected function _getBaseUrl() {
		do {
			$baseUrl = $this->in(__d('cake_installer', 'Input base URL (e.g. %s):', 'http://someapp.fabrikam.com'));
			$baseUrl = trim($baseUrl);
		} while (!preg_match('/http[s]?\:\/\/[A-z0-9\.\/]+/', $baseUrl));

		return trim($baseUrl, '/');
	}