<?php
namespace Spider\Lib;
include(DEVER_APP_PATH . 'third/phpQuery.php');
use Dever;
use phpQuery;

class Dom
{
	private $query;

	public function __construct($url, $rule = '')
	{
		$html = $this->download($url);
		$dom = phpQuery::newDocumentHTML($html);
		if ($rule) {
			$dom = $this->find($dom, $rule);
		}
		
		$this->query = $dom;
	}


	private function download($url)
	{
		$download = new Download($url);
		return $download->get();
	}

	public function get()
	{
		return $this->query;
	}

	public function find($dom, $rule)
	{
		$rule = str_replace('$', '$dom->find', $rule);
		$cmd = '$dom = ' . $rule . ';';
		eval($cmd);
		return $dom;
	}
}