SimplePie_Locator::get_base

			return false;
		}
	}

	public function get_base()
	{
		if ($this->dom === null)
		{
			throw new SimplePie_Exception('DOMDocument not found, unable to use locator');
		}
		$this->http_base = $this->file->url;
		$this->base = $this->http_base;
		$elements = $this->dom->getElementsByTagName('base');
		foreach ($elements as $element)
		{
			if ($element->hasAttribute('href'))
			{
				$base = $this->registry->call('Misc', 'absolutize_url', array(trim($element->getAttribute('href')), $this->http_base));
				if ($base === false)
				{
					continue;
				}
				$this->base = $base;
				$this->base_location = method_exists($element, 'getLineNo') ? $element->getLineNo() : 0;