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<?php |
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namespace vipnytt\RobotsTxtParser\Directives; |
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use vipnytt\RobotsTxtParser\ObjectTools; |
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use vipnytt\RobotsTxtParser\RobotsTxtInterface; |
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/** |
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* Class UserAgent |
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* |
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* @package vipnytt\RobotsTxtParser\Directives |
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*/ |
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final class UserAgent implements DirectiveInterface, RobotsTxtInterface |
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{ |
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use ObjectTools; |
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/** |
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* Sub directives white list |
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*/ |
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const SUB_DIRECTIVES = [ |
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self::DIRECTIVE_ALLOW, |
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self::DIRECTIVE_CACHE_DELAY, |
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self::DIRECTIVE_CRAWL_DELAY, |
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self::DIRECTIVE_DISALLOW, |
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]; |
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/** |
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* Directive |
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*/ |
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const DIRECTIVE = self::DIRECTIVE_USER_AGENT; |
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/** |
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* All User-agents declared |
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* @var array |
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*/ |
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public $userAgents = []; |
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/** |
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* Sub-directive Allow |
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* @var array |
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*/ |
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public $allow = []; |
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/** |
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* Sub-directive Cache-delay |
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* @var array |
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*/ |
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public $cacheDelay = []; |
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/** |
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* Sub-directive Crawl-delay |
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* @var array |
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*/ |
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public $crawlDelay = []; |
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/** |
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* Sub-directive Disallow |
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* @var array |
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*/ |
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public $disallow = []; |
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/** |
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* Current User-agent(s) |
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* @var array |
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*/ |
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protected $userAgent = []; |
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/** |
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* UserAgent constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->set(); |
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} |
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/** |
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* Set new User-agent |
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* |
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* @param array $array |
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* @return bool |
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*/ |
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public function set($array = [self::USER_AGENT]) |
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{ |
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$this->userAgent = $array; |
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foreach ($this->userAgent as $userAgent) { |
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if (!in_array($userAgent, $this->userAgents)) { |
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$this->allow[$userAgent] = new DisAllow(self::DIRECTIVE_ALLOW); |
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$this->cacheDelay[$userAgent] = new CrawlDelay(self::DIRECTIVE_CACHE_DELAY); |
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$this->crawlDelay[$userAgent] = new CrawlDelay(self::DIRECTIVE_CRAWL_DELAY); |
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$this->disallow[$userAgent] = new DisAllow(self::DIRECTIVE_DISALLOW); |
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$this->userAgents[] = $userAgent; |
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} |
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} |
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return true; |
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} |
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/** |
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* Add |
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* |
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* @param string $line |
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* @return bool |
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*/ |
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public function add($line) |
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{ |
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$result = false; |
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$pair = $this->generateRulePair($line, self::SUB_DIRECTIVES); |
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foreach ($this->userAgent as $userAgent) { |
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switch ($pair['directive']) { |
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case self::DIRECTIVE_ALLOW: |
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$result = $this->allow[$userAgent]->add($pair['value']); |
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break; |
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case self::DIRECTIVE_CACHE_DELAY: |
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$result = $this->cacheDelay[$userAgent]->add($pair['value']); |
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break; |
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case self::DIRECTIVE_CRAWL_DELAY: |
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$result = $this->crawlDelay[$userAgent]->add($pair['value']); |
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break; |
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case self::DIRECTIVE_DISALLOW: |
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$result = $this->disallow[$userAgent]->add($pair['value']); |
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break; |
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} |
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} |
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return isset($result) ? $result : false; |
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} |
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/** |
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* Export |
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* |
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* @return array |
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*/ |
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public function export() |
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{ |
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$result = []; |
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foreach ($this->userAgents as $userAgent) { |
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$current = $this->allow[$userAgent]->export() |
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+ $this->cacheDelay[$userAgent]->export() |
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+ $this->crawlDelay[$userAgent]->export() |
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+ $this->disallow[$userAgent]->export(); |
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if (!empty($current)) { |
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$result[$userAgent] = $current; |
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} |
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} |
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return empty($result) ? [] : [self::DIRECTIVE => $result]; |
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} |
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} |
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VIPnytt /
RobotsTxtParser
