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<?php |
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namespace PiedWeb\UrlHarvester; |
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trait HarvestLinksTrait |
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{ |
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/** |
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* @var array |
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*/ |
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protected $links; |
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protected $linksPerType; |
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abstract public function getDom(); |
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abstract public function getDomain(); |
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public function getLinkedRessources() |
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{ |
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return ExtractLinks::get($this->getDom(), $this->response->getEffectiveUrl(), ExtractLinks::SELECT_ALL); |
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} |
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public function getLinks($type = null) |
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{ |
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if (null === $this->links) { |
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$this->links = ExtractLinks::get($this->getDom(), $this->response->getEffectiveUrl()); |
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$this->classifyLinks(); |
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} |
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switch ($type) { |
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case self::LINK_SELF: |
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return $this->linksPerType[self::LINK_SELF]; |
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case self::LINK_INTERNAL: |
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return $this->linksPerType[self::LINK_INTERNAL]; |
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case self::LINK_SUB: |
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return $this->linksPerType[self::LINK_SUB]; |
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case self::LINK_EXTERNAL: |
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return $this->linksPerType[self::LINK_EXTERNAL]; |
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default: |
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return $this->links; |
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} |
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} |
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public function getNbrDuplicateLinks() |
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{ |
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$links = $this->getLinks(); |
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$u = []; |
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foreach ($links as $link) { |
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$u[$link->getUrl()] = 1; |
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} |
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return count($links) - count($u); |
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} |
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abstract function getDomainAndScheme(); |
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public function classifyLinks() |
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{ |
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$links = $this->getLinks(); |
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foreach ($links as $link) { |
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$type = $this->getType($link->getPageUrl()); |
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$this->linksPerType[$type][] = $link; |
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} |
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} |
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public function isInternalType(string $url) |
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{ |
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return strpos($url, $this->getDomainAndScheme()) === 0; |
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} |
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public function isSubType(string $host) |
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{ |
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return strtolower(substr($host, -strlen($this->getDomain()))) === $this->getDomain(); |
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} |
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public function isSelfType(string $url) |
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{ |
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if (strpos($url, '#') !== 0) { |
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$url = substr($url, 0, -(strlen(parse_url($url, PHP_URL_FRAGMENT)) + 1)); |
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} |
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return $this->isInternalType($url) && $url == $this->response->getEffectiveUrl(); |
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} |
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public function getType(string $url): string |
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{ |
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if ($this->isSelfType($url)) { |
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return self::LINK_SELF; |
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} elseif ($this->isInternalType($url)) { |
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return self::LINK_INTERNAL; |
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} elseif ($this->isSubType(parse_url($url, PHP_URL_HOST))) { |
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return self::LINK_SUB; |
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} |
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return self::LINK_EXTERNAL; |
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} |
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public function getAbsoluteInternalLink(string $url) |
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{ |
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return substr($url, strlen($this->getDomainAndScheme())); |
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} |
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} |
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PiedWeb /
UrlHarvester
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