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<?php |
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namespace HumanDirect\Socially\Normalizer; |
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use HumanDirect\Socially\Factory; |
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use HumanDirect\Socially\Util; |
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/** |
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* Class DefaultNormalizer. |
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*/ |
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class DefaultNormalizer implements NormalizerInterface |
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{ |
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/** |
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* @var bool |
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*/ |
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protected $stripSubdomain = true; |
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/** |
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* @var bool |
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*/ |
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protected $stripQueryStrings = true; |
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/** |
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* @var array |
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*/ |
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protected $allowedQueryParams = [ |
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'id' |
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]; |
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/** |
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* Normalize a URL. |
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* |
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* @param string $url |
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* |
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* @return string |
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*/ |
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public function normalize(string $url): string |
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{ |
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$url = rawurldecode($url); |
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$url = $this->cleanUrl($url); |
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$url = str_replace('http://', 'https://', $url); |
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return $this->afterNormalization($url); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function afterNormalization(string $url): string |
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{ |
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if (true === $this->stripSubdomain) { |
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$url = $this->cleanSubdomain($url); |
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} |
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if (true === $this->stripQueryStrings) { |
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$url = $this->cleanQueryString($url); |
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} |
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return $url; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supports(string $platform): bool |
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{ |
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return $this->getName() === Util::toCamelCase($platform); |
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} |
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/** |
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* @throws \ReflectionException |
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* |
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* @return string |
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*/ |
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protected function getName(): string |
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{ |
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$shortName = (new \ReflectionClass($this))->getShortName(); |
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return substr($shortName, 0, -10); |
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} |
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/** |
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* @param string $url |
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* |
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* @return string |
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*/ |
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protected function cleanUrl(string $url): string |
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{ |
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return rtrim(Util::cleanUrl($url), '/'); |
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} |
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/** |
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* @param string $url |
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* |
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* @throws \LayerShifter\TLDExtract\Exceptions\RuntimeException |
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* |
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* @return string |
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*/ |
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private function cleanSubdomain(string $url): string |
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{ |
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$tldExtractor = Factory::createTldExtractor(); |
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$result = $tldExtractor->parse($url); |
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$subdomain = $result->getSubdomain(); |
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if (null === $subdomain) { |
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return $url; |
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} |
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return str_replace($subdomain . '.', '', $url); |
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} |
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/** |
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* @param string $url |
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* |
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* @return string |
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*/ |
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private function cleanQueryString(string $url): string |
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{ |
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// all query params and fragments have to be removed |
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if (empty($this->allowedQueryParams)) { |
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return strtok($url, '?'); |
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} |
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// first remove fragments from URL |
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$url = strtok($url, '#'); |
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$query = parse_url($url, PHP_URL_QUERY); |
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if (null === $query) { |
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return $url; |
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} |
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parse_str($query, $params); |
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foreach ($params as $paramKey => $paramValue) { |
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if (!\in_array($paramKey, $this->allowedQueryParams, true)) { |
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unset($params[$paramKey]); |
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} |
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} |
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return strtok($url, '?') . (\count($params) ? '?' . http_build_query($params) : ''); |
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} |
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} |
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balazscsaba2006 /
socially
