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<?php |
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namespace VDB\Spider; |
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use GuzzleHttp\Psr7; |
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use Psr\Http\Message\ResponseInterface; |
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use Symfony\Component\DomCrawler\Crawler; |
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use VDB\Spider\Uri\DiscoveredUri; |
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/** |
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* @author Matthijs van den Bos |
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* @copyright 2013 Matthijs van den Bos |
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*/ |
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class Resource |
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{ |
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/** @var DiscoveredUri */ |
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protected $uri; |
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/** @var ResponseInterface */ |
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protected $response; |
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/** @var Crawler */ |
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protected $crawler; |
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/** @var string */ |
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protected $body; |
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/** |
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* @param DiscoveredUri $uri |
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* @param ResponseInterface $response |
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*/ |
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public function __construct(DiscoveredUri $uri, ResponseInterface $response) |
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{ |
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$this->uri = $uri; |
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$this->response = $response; |
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} |
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/** |
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* Lazy loads a Crawler object based on the ResponseInterface; |
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* @return Crawler |
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*/ |
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public function getCrawler() |
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{ |
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if (!$this->crawler instanceof Crawler) { |
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$this->crawler = new Crawler('', $this->getUri()->toString()); |
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$this->crawler->addContent( |
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$this->getResponse()->getBody()->__toString(), |
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$this->getResponse()->getHeaderLine('Content-Type') |
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); |
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} |
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return $this->crawler; |
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} |
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/** |
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* @return DiscoveredUri |
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*/ |
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public function getUri() |
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{ |
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return $this->uri; |
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} |
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/** |
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* @return ResponseInterface |
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*/ |
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public function getResponse() |
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{ |
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return $this->response; |
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} |
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public function __sleep() |
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{ |
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/* |
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* Because the Crawler isn't serialized correctly, we exclude it from serialization |
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* It will be available again after wakeup through lazy loading with getCrawler() |
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*/ |
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// we store the response manually, because otherwise it will not get serialized. |
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$this->body = Psr7\str($this->response); |
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return array( |
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'uri', |
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'body' |
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); |
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} |
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/** |
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* We need to set the body again after deserialization because it was a stream that didn't get serialized |
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*/ |
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public function __wakeup() |
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{ |
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$this->response = Psr7\parse_response($this->body); |
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} |
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} |
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mvdbos /
php-spider
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