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<?php |
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/* |
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* This file is part of the bisarca/robots-txt package. |
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* |
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* (c) Emanuele Minotto <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Bisarca\RobotsTxt\Directive; |
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use Bisarca\RobotsTxt\Exception\InvalidDirectiveException; |
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use Pdp\Parser; |
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use Pdp\PublicSuffixListManager; |
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/** |
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* "Host" directive element. |
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*/ |
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class Host implements NonGroupInterface |
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{ |
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/** |
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* PHP Domain Parser (if available). |
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* |
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* @var Parser |
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*/ |
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private static $domainParser; |
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/** |
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* Directive value. |
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* |
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* @var string |
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*/ |
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private $value = ''; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __construct(string $raw) |
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{ |
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if ( |
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class_exists(Parser::class) && |
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class_exists(PublicSuffixListManager::class) && |
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null === self::$domainParser |
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) { |
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$pslManager = new PublicSuffixListManager(); |
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self::setDomainParser(new Parser($pslManager->getList())); |
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} |
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if (!preg_match('/^host:\s*([^# ]+).*/i', $raw, $matches)) { |
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throw InvalidDirectiveException::create($raw); |
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} |
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$host = trim($matches[1]); |
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$this->validateHost($host, $raw); |
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$this->value = $host; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function getField(): string |
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{ |
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return 'host'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getValue(): string |
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{ |
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return $this->value; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function __toString(): string |
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{ |
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return sprintf('Host: %s', $this->value); |
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} |
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/** |
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* Validates host (if PHP Domain Parser is available). |
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* |
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* @param string $host |
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* @param string $raw |
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*/ |
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private function validateHost(string $host, string $raw) |
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{ |
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if ( |
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null !== self::$domainParser && |
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!self::$domainParser->isSuffixValid($host) |
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) { |
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throw InvalidDirectiveException::create($raw); |
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} |
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} |
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/** |
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* Sets the domain parser. |
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* |
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* @param Parser $domainParser |
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*/ |
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public static function setDomainParser(Parser $domainParser) |
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{ |
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self::$domainParser = $domainParser; |
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} |
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} |
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bisarca /
robots-txt
