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<?php |
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namespace Spatie\Crawler\CrawlQueue; |
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use Psr\Http\Message\UriInterface; |
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use Spatie\Crawler\CrawlUrl; |
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use Spatie\Crawler\Exception\InvalidUrl; |
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use Spatie\Crawler\Exception\UrlNotFoundByIndex; |
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class ArrayCrawlQueue implements CrawlQueue |
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{ |
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/** |
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* All known URLs, indexed by URL string. |
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* |
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* @var CrawlUrl[] |
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*/ |
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protected $urls = []; |
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/** |
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* Pending URLs, indexed by URL string. |
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* |
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* @var CrawlUrl[] |
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*/ |
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protected $pendingUrls = []; |
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public function add(CrawlUrl $url) : CrawlQueue |
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{ |
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$urlString = (string) $url->url; |
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if (! isset($this->urls[$urlString])) { |
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$url->setId($urlString); |
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$this->urls[$urlString] = $url; |
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$this->pendingUrls[$urlString] = $url; |
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} |
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return $this; |
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} |
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public function hasPendingUrls() : bool |
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{ |
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return (bool) $this->pendingUrls; |
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} |
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public function getUrlById($id) : CrawlUrl |
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{ |
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if (! isset($this->urls[$id])) { |
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throw new UrlNotFoundByIndex("Crawl url {$id} not found in collection."); |
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} |
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return $this->urls[$id]; |
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} |
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public function hasAlreadyBeenProcessed(CrawlUrl $url) : bool |
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{ |
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$url = (string) $url->url; |
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if (isset($this->pendingUrls[$url])) { |
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return false; |
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} |
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if (isset($this->urls[$url])) { |
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return true; |
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} |
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return false; |
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} |
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public function markAsProcessed(CrawlUrl $crawlUrl) |
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{ |
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$url = (string) $crawlUrl->url; |
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unset($this->pendingUrls[$url]); |
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} |
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/** |
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* @param CrawlUrl|UriInterface $crawlUrl |
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* |
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* @return bool |
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*/ |
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public function has($crawlUrl) : bool |
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{ |
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if ($crawlUrl instanceof CrawlUrl) { |
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$url = (string) $crawlUrl->url; |
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} elseif ($crawlUrl instanceof UriInterface) { |
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$url = (string) $crawlUrl; |
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} else { |
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throw InvalidUrl::unexpectedType($crawlUrl); |
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} |
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return isset($this->urls[$url]); |
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} |
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public function getFirstPendingUrl() : ?CrawlUrl |
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{ |
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foreach ($this->pendingUrls as $pendingUrl) { |
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return $pendingUrl; |
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} |
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return null; |
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} |
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} |
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spatie /
crawler
