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<?php
namespace Yoast\WP\SEO\Helpers;
use Yoast\WP\SEO\Values\Robots\User_Agent_List;
/**
* A helper object for the robots txt file.
*/
class Robots_Txt_Helper {
/**
* Holds a list of user agents with directives.
*
* @var User_Agent_List
*/
protected $robots_txt_user_agents;
/**
* Holds an array with absolute URLs of sitemaps.
*
* @var array
*/
protected $robots_txt_sitemaps;
/**
* Constructor for Robots_Txt_Helper.
*/
public function __construct() {
$this->robots_txt_user_agents = new User_Agent_List();
$this->robots_txt_sitemaps = [];
}
/**
* Add a disallow rule for a specific user agent if it does not exist yet.
*
* @param string $user_agent The user agent to add the disallow rule to.
* @param string $path The path to add as a disallow rule.
*
* @return void
*/
public function add_disallow( $user_agent, $path ) {
$user_agent_container = $this->robots_txt_user_agents->get_user_agent( $user_agent );
$user_agent_container->add_disallow_directive( $path );
}
/**
* Add an allow rule for a specific user agent if it does not exist yet.
*
* @param string $user_agent The user agent to add the allow rule to.
* @param string $path The path to add as a allow rule.
*
* @return void
*/
public function add_allow( $user_agent, $path ) {
$user_agent_container = $this->robots_txt_user_agents->get_user_agent( $user_agent );
$user_agent_container->add_allow_directive( $path );
}
/**
* Add sitemap to robots.txt if it does not exist yet.
*
* @param string $absolute_path The absolute path to the sitemap to add.
*
* @return void
*/
public function add_sitemap( $absolute_path ) {
if ( ! \in_array( $absolute_path, $this->robots_txt_sitemaps, true ) ) {
$this->robots_txt_sitemaps[] = $absolute_path;
}
}
/**
* Get all registered disallow directives per user agent.
*
* @return array The registered disallow directives per user agent.
*/
public function get_disallow_directives() {
return $this->robots_txt_user_agents->get_disallow_directives();
}
/**
* Get all registered allow directives per user agent.
*
* @return array The registered allow directives per user agent.
*/
public function get_allow_directives() {
return $this->robots_txt_user_agents->get_allow_directives();
}
/**
* Get all registered sitemap rules.
*
* @return array The registered sitemap rules.
*/
public function get_sitemap_rules() {
return $this->robots_txt_sitemaps;
}
/**
* Get all registered user agents
*
* @return array The registered user agents.
*/
public function get_robots_txt_user_agents() {
return $this->robots_txt_user_agents->get_user_agents();
}
}