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<?php |
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namespace PiedWeb\SeoPocketCrawler; |
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class ExtractExternalLinks |
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{ |
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protected $id; |
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protected $dir; |
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protected $filter; |
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protected $filterType; |
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protected $external = []; |
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/** |
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* @var CrawlerConfig |
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*/ |
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protected $config; |
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protected function __construct(string $id, ?string $dataDirectory = null) |
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{ |
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$this->config = CrawlerConfig::loadFrom($id, $dataDirectory); |
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$this->dir = $this->config->getDataFolder().'/links'; |
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} |
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protected function filter($filename) |
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{ |
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return 0 === strpos($filename, 'From_'); |
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} |
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public static function scan(string $id) |
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{ |
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$self = new self($id); |
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$self->scanLinksDir(); |
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return $self->getExternals(); |
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} |
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protected function scanLinksDir() |
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{ |
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if ($resource = opendir($this->dir)) { |
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while (false !== ($filename = readdir($resource))) { |
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if ($this->filter($filename)) { |
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$this->harvestExternalLinks( |
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trim(file_get_contents($this->dir.'/'.$filename)), |
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$this->config->getUrlFromId(substr($filename, strlen('From_'))) |
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); |
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} |
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} |
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closedir($resource); |
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} |
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} |
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protected function harvestExternalLinks(string $strUrlsLinked, $from) |
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{ |
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if (empty($strUrlsLinked)) { |
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return; |
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} |
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$lines = explode(chr(10), $strUrlsLinked); |
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foreach ($lines as $line) { |
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if (0 !== strpos($line, $this->config->getBase())) { |
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if (!isset($this->external[$line])) { |
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$this->external[$line] = []; |
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} |
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$this->external[$line][] = $from; |
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} |
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} |
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} |
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public function getExternals() |
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{ |
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return $this->external; |
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} |
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} |
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PiedWeb /
SeoPocketCrawler
