ldc-sbv/pole-sbv-content/plugins/polylang/include/links.php

<?php

/**
 * Manages links related functions
 *
 * @since 1.2
 */
class PLL_Links {
	public $links_model, $model, $options;

	/**
	 * Constructor
	 *
	 * @since 1.2
	 *
	 * @param object $polylang
	 */
	public function __construct( &$polylang ) {
		$this->links_model = &$polylang->links_model;
		$this->model = &$polylang->model;
		$this->options = &$polylang->options;
	}

	/**
	 * Returns the home url in the requested language
	 *
	 * @since 1.3
	 *
	 * @param object|string $language
	 * @param bool          $is_search optional whether we need the home url for a search form, defaults to false
	 */
	public function get_home_url( $language, $is_search = false ) {
		$language = is_object( $language ) ? $language : $this->model->get_language( $language );
		return $is_search ? $language->search_url : $language->home_url;
	}

	/**
	 * Checks if the current user can read the post
	 *
	 * @since 1.5
	 *
	 * @param int $post_id
	 * @return bool
	 */
	public function current_user_can_read( $post_id ) {
		$post = get_post( $post_id );

		if ( 'inherit' === $post->post_status && $post->post_parent ) {
			$post = get_post( $post->post_parent );
		}

		if ( 'inherit' === $post->post_status || in_array( $post->post_status, get_post_stati( array( 'public' => true ) ) ) ) {
			return true;
		}

		// Follow WP practices, which shows links to private posts ( when readable ), but not for draft posts ( ex: get_adjacent_post_link() )
		if ( in_array( $post->post_status, get_post_stati( array( 'private' => true ) ) ) ) {
			$post_type_object = get_post_type_object( $post->post_type );
			$user = wp_get_current_user();
			return is_user_logged_in() && ( current_user_can( $post_type_object->cap->read_private_posts ) || $user->ID == $post->post_author ); // Comparison must not be strict!
		}

		return false;
	}
}