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<?php |
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/** |
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* vipnytt/RobotsTxtParser |
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* |
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* @link https://github.com/VIPnytt/RobotsTxtParser |
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* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT) |
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*/ |
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namespace vipnytt\RobotsTxtParser\Parser\Directives; |
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use vipnytt\RobotsTxtParser\Client\Directives\DelayClient; |
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use vipnytt\RobotsTxtParser\Handler\RenderHandler; |
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use vipnytt\RobotsTxtParser\RobotsTxtInterface; |
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/** |
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* Class DelayParser |
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* |
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* @package vipnytt\RobotsTxtParser\Parser\Directives |
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*/ |
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class DelayParser implements ParserInterface, RobotsTxtInterface |
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{ |
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/** |
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* Directive |
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* @var string |
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*/ |
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private $directive; |
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/** |
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* Base uri |
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* @var string |
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*/ |
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private $base; |
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/** |
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* Delay |
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* @var float|int |
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*/ |
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private $delay; |
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/** |
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* DelayParser constructor. |
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* |
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* @param string $base |
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* @param string $directive |
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*/ |
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public function __construct($base, $directive) |
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{ |
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$this->base = $base; |
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$this->directive = $directive; |
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} |
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/** |
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* Add |
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* |
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* @param float|int|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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if (!is_numeric($line) || |
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( |
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isset($this->delay) && |
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$this->delay > 0 |
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) |
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) { |
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return false; |
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} |
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// PHP hack to convert numeric string to float or int |
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// http://stackoverflow.com/questions/16606364/php-cast-string-to-either-int-or-float |
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$this->delay = $line + 0; |
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return true; |
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} |
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/** |
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* Client |
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* |
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* @param string $userAgent |
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* @param float|int $fallbackValue |
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* @return DelayClient |
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*/ |
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public function client($userAgent = self::USER_AGENT, $fallbackValue = 0) |
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{ |
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return new DelayClient($this->base, $userAgent, $this->delay, $fallbackValue); |
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} |
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/** |
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* Render |
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* |
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* @param RenderHandler $handler |
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* @return bool |
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*/ |
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public function render(RenderHandler $handler) |
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{ |
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if (!empty($this->delay)) { |
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$handler->add($this->directive, $this->delay); |
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} |
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return true; |
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} |
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} |
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VIPnytt /
RobotsTxtParser
