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<?php |
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namespace vipnytt\RobotsTxtParser; |
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use vipnytt\RobotsTxtParser\Client\Directives\CleanParamClient; |
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use vipnytt\RobotsTxtParser\Client\Directives\HostClient; |
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use vipnytt\RobotsTxtParser\Client\Directives\SitemapClient; |
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use vipnytt\RobotsTxtParser\Client\Directives\UserAgentClient; |
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use vipnytt\RobotsTxtParser\Client\Encoding\EncodingConverter; |
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use vipnytt\RobotsTxtParser\Parser\RobotsTxtParser; |
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use vipnytt\RobotsTxtParser\Parser\UrlParser; |
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/** |
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* Class Core |
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* |
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* @link https://developers.google.com/webmasters/control-crawl-index/docs/robots_txt |
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* @link https://yandex.com/support/webmaster/controlling-robot/robots-txt.xml |
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* @link http://www.robotstxt.org/robotstxt.html |
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* @link https://www.w3.org/TR/html4/appendix/notes.html#h-B.4.1.1 |
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* @link http://www.conman.org/people/spc/robots2.html |
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* |
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* @package vipnytt\RobotsTxtParser |
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*/ |
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class Core extends RobotsTxtParser |
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{ |
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use UrlParser; |
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/** |
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* Base uri |
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* @var string |
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*/ |
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protected $base; |
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/** |
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* Status code |
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* @var int|null |
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*/ |
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protected $statusCode; |
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/** |
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* Robots.txt content |
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* @var string |
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*/ |
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protected $content; |
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/** |
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* Core constructor. |
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* |
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* @param string $baseUri |
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* @param int $statusCode |
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* @param string|null $content |
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* @param string $encoding |
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* @param int|null $byteLimit |
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*/ |
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public function __construct($baseUri, $statusCode, $content, $encoding = self::ENCODING, $byteLimit = self::BYTE_LIMIT) |
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{ |
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$this->base = $this->urlBase($this->urlEncode($baseUri)); |
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$this->statusCode = $statusCode; |
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$this->content = $content; |
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$this->convertEncoding($encoding); |
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$this->limitBytes($byteLimit); |
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parent::__construct($this->base, $this->content); |
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} |
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/** |
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* Convert character encoding |
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* |
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* @param string $encoding |
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* @return string |
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*/ |
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private function convertEncoding($encoding) |
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{ |
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mb_internal_encoding(self::ENCODING); |
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$convert = new EncodingConverter($this->content, $encoding); |
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if (($result = $convert->auto()) !== false) { |
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return $this->content = $result; |
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} |
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return $this->content; |
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} |
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/** |
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* Byte limit |
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* |
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* @param int|null $bytes |
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* @return string |
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*/ |
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private function limitBytes($bytes) |
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{ |
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if ($bytes === null) { |
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return $this->content; |
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} elseif ($bytes < 5000) { |
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trigger_error('Byte limit is set dangerously low!', E_USER_WARNING); |
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} |
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return $this->content = mb_strcut($this->content, 0, intval($bytes)); |
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} |
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/** |
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* Clean-param |
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* |
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* @return CleanParamClient |
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*/ |
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public function cleanParam() |
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{ |
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return $this->handler->cleanParam()->client(); |
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} |
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/** |
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* Host |
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* |
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* @return HostClient |
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*/ |
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public function host() |
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{ |
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return $this->handler->host()->client(); |
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} |
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/** |
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* Sitemaps |
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* |
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* @return SitemapClient |
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*/ |
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public function sitemap() |
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{ |
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return $this->handler->sitemap()->client(); |
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} |
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/** |
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* Get User-agent list |
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* |
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* @return string[] |
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*/ |
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public function getUserAgents() |
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{ |
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return $this->handler->userAgent()->getUserAgents(); |
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} |
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/** |
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* Client User-agent specific rules |
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* |
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* @param string $string |
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* @return UserAgentClient |
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*/ |
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public function userAgent($string = self::USER_AGENT) |
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{ |
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return $this->handler->userAgent()->client($string, $this->statusCode); |
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} |
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} |
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VIPnytt /
RobotsTxtParser
