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<?php |
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namespace MadWeb\Robots; |
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class Robots |
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{ |
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/** |
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* The lines of for the robots.txt. |
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* |
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* @var array |
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*/ |
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protected $lines = []; |
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/** @var callable|bool */ |
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protected static $shouldIndex = true; |
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/** |
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* Generate the robots.txt data. |
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* |
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* @return string |
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*/ |
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public function generate() |
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{ |
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return implode(PHP_EOL, $this->lines); |
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} |
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/** |
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* Add a Sitemap to the robots.txt. |
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* |
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* @param string $sitemap |
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*/ |
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public function addSitemap($sitemap) |
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{ |
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$this->addLine("Sitemap: $sitemap"); |
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} |
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/** |
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* Add a User-agent to the robots.txt. |
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* |
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* @param string $userAgent |
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*/ |
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public function addUserAgent($userAgent) |
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{ |
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$this->addLine("User-agent: $userAgent"); |
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} |
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/** |
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* Add a Host to the robots.txt. |
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* |
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* @param string $host |
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*/ |
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public function addHost($host) |
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{ |
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$this->addLine("Host: $host"); |
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} |
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/** |
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* Add a disallow rule to the robots.txt. |
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* |
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* @param string|array $directories |
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*/ |
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public function addDisallow($directories) |
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{ |
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$this->addRuleLine($directories, 'Disallow'); |
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} |
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/** |
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* Add a allow rule to the robots.txt. |
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* |
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* @param string|array $directories |
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*/ |
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public function addAllow($directories) |
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{ |
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$this->addRuleLine($directories, 'Allow'); |
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} |
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/** |
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* Add a rule to the robots.txt. |
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* |
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* @param string|array $directories |
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* @param string $rule |
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*/ |
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public function addRuleLine($directories, string $rule) |
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{ |
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foreach ((array) $directories as $directory) { |
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$this->addLine("$rule: $directory"); |
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} |
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} |
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/** |
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* Add a comment to the robots.txt. |
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* |
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* @param string $comment |
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*/ |
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public function addComment($comment) |
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{ |
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$this->addLine("# $comment"); |
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} |
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/** |
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* Add a spacer to the robots.txt. |
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*/ |
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public function addSpacer() |
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{ |
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$this->addLine(''); |
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} |
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/** |
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* Add a line to the robots.txt. |
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* |
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* @param string $line |
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*/ |
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public function addLine(string $line) |
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{ |
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$this->lines[] = $line; |
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} |
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/** |
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* Add multiple lines to the robots.txt. |
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* |
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* @param string|array $lines |
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*/ |
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protected function addLines($lines) |
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{ |
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foreach ((array) $lines as $line) { |
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$this->addLine($line); |
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} |
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} |
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/** |
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* Reset the lines. |
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* |
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* @return void |
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*/ |
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public function reset() |
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{ |
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$this->lines = []; |
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} |
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/** |
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* Set callback with should index condition. |
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*/ |
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public function setShouldIndexCallback(callable $callback) |
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{ |
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self::$shouldIndex = $callback; |
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} |
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148
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/** |
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149
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* Check is application should be indexed. |
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150
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*/ |
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151
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9 |
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public function shouldIndex(): bool |
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152
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{ |
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153
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9 |
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if (is_callable(self::$shouldIndex)) { |
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9 |
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return (bool) call_user_func(self::$shouldIndex); |
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155
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} |
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return self::$shouldIndex; |
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} |
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159
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160
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/** |
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161
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* Render robots meta tag. |
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162
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*/ |
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163
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3 |
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public function metaTag(): string |
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164
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{ |
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165
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3 |
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return '<meta name="robots" content="'.($this->shouldIndex() ? 'index, follow' : 'noindex, nofollow').'">'; |
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166
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} |
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167
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} |
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mad-web /
laravel-robots
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