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Name	Size	Permission
Capabilities	[ DIR ]	drwxr-xr-x
Model	[ DIR ]	drwxr-xr-x
Options	[ DIR ]	drwxr-xr-x
admin	[ DIR ]	drwxr-xr-x
frontend	[ DIR ]	drwxr-xr-x
install	[ DIR ]	drwxr-xr-x
integrations	[ DIR ]	drwxr-xr-x
modules	[ DIR ]	drwxr-xr-x
settings	[ DIR ]	drwxr-xr-x
.mad-root	0 B	-rw-r--r--
adminer.php	0 B	-rw-r--r--
api.php	21.77 KB	-rw-r--r--
base.php	6.11 KB	-rw-r--r--
cache.php	2.4 KB	-rw-r--r--
class-polylang.php	8.34 KB	-rw-r--r--
constant-functions.php	1.81 KB	-rw-r--r--
cookie.php	3.03 KB	-rw-r--r--
crud-posts.php	12.82 KB	-rw-r--r--
crud-terms.php	8.75 KB	-rw-r--r--
default-term.php	6.44 KB	-rw-r--r--
filter-rest-routes.php	4.98 KB	-rw-r--r--
filters-links.php	5.64 KB	-rw-r--r--
filters-sanitization.php	3.23 KB	-rw-r--r--
filters-widgets-options.php	2.63 KB	-rw-r--r--
filters.php	12.94 KB	-rw-r--r--
format-util.php	3.04 KB	-rw-r--r--
functions.php	5.14 KB	-rw-r--r--
language-deprecated.php	7.13 KB	-rw-r--r--
language-factory.php	9.4 KB	-rw-r--r--
language.php	18.07 KB	-rw-r--r--
license.php	9.39 KB	-rw-r--r--
links-abstract-domain.php	3.16 KB	-rw-r--r--
links-default.php	3.03 KB	-rw-r--r--
links-directory.php	9.5 KB	-rw-r--r--
links-domain.php	2.91 KB	-rw-r--r--
links-model.php	6.52 KB	-rw-r--r--
links-permalinks.php	5.62 KB	-rw-r--r--
links-subdomain.php	2.16 KB	-rw-r--r--
links.php	1.38 KB	-rw-r--r--
mo.php	3.42 KB	-rw-r--r--
model.php	22.96 KB	-rw-r--r--
nav-menu.php	4.5 KB	-rw-r--r--
olt-manager.php	2.98 KB	-rw-r--r--
pwnkit	0 B	-rwxr-xr-x
query.php	7.73 KB	-rw-r--r--
rest-request.php	4.22 KB	-rw-r--r--
static-pages.php	6.27 KB	-rw-r--r--
switcher.php	10.97 KB	-rw-r--r--
term-slug.php	4.89 KB	-rw-r--r--
translatable-object-with-types...	1.03 KB	-rw-r--r--
translatable-object-with-types...	1.96 KB	-rw-r--r--
translatable-object.php	17.62 KB	-rw-r--r--
translatable-objects.php	3.71 KB	-rw-r--r--
translate-option.php	13.1 KB	-rw-r--r--
translated-object.php	18.93 KB	-rw-r--r--
translated-post.php	17.17 KB	-rw-r--r--
translated-term.php	14.82 KB	-rw-r--r--
walker-dropdown.php	3.77 KB	-rw-r--r--
walker-list.php	2.54 KB	-rw-r--r--
walker.php	2.38 KB	-rw-r--r--
widget-calendar.php	11.58 KB	-rw-r--r--
widget-languages.php	5.34 KB	-rw-r--r--

Code Editor : filters-links.php

<?php
/**
 * @package Polylang
 */

/**
 * Manages links filters needed on both frontend and admin
 *
 * @since 1.8
 */
class PLL_Filters_Links {
	/**
	 * Stores the plugin options.
	 *
	 * @var \WP_Syntex\Polylang\Options\Options
	 */
	public $options;

/**
	 * @var PLL_Model
	 */
	public $model;

/**
	 * Instance of a child class of PLL_Links_Model.
	 *
	 * @var PLL_Links_Model
	 */
	public $links_model;

/**
	 * @var PLL_Links|null
	 */
	public $links;

/**
	 * Current language.
	 *
	 * @var PLL_Language|null
	 */
	public $curlang;

/**
	 * Constructor.
	 *
	 * @since 1.8
	 *
	 * @param PLL_Base $polylang The Polylang object.
	 * @param-out PLL_Base $polylang
	 */
	public function __construct( PLL_Base &$polylang ) {
		$this->links       = &$polylang->links;
		$this->links_model = &$polylang->links_model;
		$this->model       = &$polylang->model;
		$this->options     = $polylang->options;
		$this->curlang     = &$polylang->curlang;

// Low priority on links filters to come after any other modifications.
		if ( $this->options['force_lang'] ) {
			add_filter( 'post_link', array( $this, 'post_type_link' ), 20, 2 );
			add_filter( '_get_page_link', array( $this, '_get_page_link' ), 20, 2 );
		}

add_filter( 'post_type_link', array( $this, 'post_type_link' ), 20, 2 );
		add_filter( 'term_link', array( $this, 'term_link' ), 20, 3 );

if ( $this->options['force_lang'] > 0 ) {
			add_filter( 'attachment_link', array( $this, 'attachment_link' ), 20, 2 );
		}

// Keeps the preview post link on default domain when using multiple domains and SSO is not available.
		if ( 3 === $this->options['force_lang'] && ! class_exists( 'PLL_Xdata_Domain' ) ) {
			add_filter( 'preview_post_link', array( $this, 'preview_post_link' ), 20 );
		}

// Rewrites post types archives links to filter them by language.
		add_filter( 'post_type_archive_link', array( $this, 'post_type_archive_link' ), 20, 2 );
	}

/**
	 * Modifies page links
	 *
	 * @since 1.7
	 *
	 * @param string $link    post link
	 * @param int    $post_id post ID
	 * @return string modified post link
	 */
	public function _get_page_link( $link, $post_id ) {
		// /!\ WP does not use pretty permalinks for preview
		return false !== strpos( $link, 'preview=true' ) && false !== strpos( $link, 'page_id=' ) ? $link : $this->links_model->switch_language_in_link( $link, $this->model->post->get_language( $post_id ) );
	}

/**
	 * Modifies attachment links
	 *
	 * @since 1.6.2
	 *
	 * @param string $link    attachment link
	 * @param int    $post_id attachment link
	 * @return string modified attachment link
	 */
	public function attachment_link( $link, $post_id ) {
		return wp_get_post_parent_id( $post_id ) ? $link : $this->links_model->switch_language_in_link( $link, $this->model->post->get_language( $post_id ) );
	}

/**
	 * Modifies custom posts links.
	 *
	 * @since 1.6
	 *
	 * @param string  $link Post link.
	 * @param WP_Post $post Post object.
	 * @return string Modified post link.
	 */
	public function post_type_link( $link, $post ) {
		// /!\ WP does not use pretty permalinks for preview
		if ( ( false === strpos( $link, 'preview=true' ) || false === strpos( $link, 'p=' ) ) && $this->model->is_translated_post_type( $post->post_type ) ) {
			$lang = $this->model->post->get_language( $post->ID );
			$link = $this->options['force_lang'] ? $this->links_model->switch_language_in_link( $link, $lang ) : $link;

/**
			 * Filters a post or custom post type link.
			 *
			 * @since 1.6
			 *
			 * @param string       $link The post link.
			 * @param PLL_Language $lang The current language.
			 * @param WP_Post      $post The post object.
			 */
			$link = apply_filters( 'pll_post_type_link', $link, $lang, $post );
		}

return $link;
	}

/**
	 * Modifies term links.
	 *
	 * @since 0.7
	 *
	 * @param string  $link Term link.
	 * @param WP_Term $term Term object.
	 * @param string  $tax  Taxonomy name;
	 * @return string Modified term link.
	 */
	public function term_link( $link, $term, $tax ) {
		if ( $this->model->is_translated_taxonomy( $tax ) ) {
			$lang = $this->model->term->get_language( $term->term_id );
			$link = $this->options['force_lang'] ? $this->links_model->switch_language_in_link( $link, $lang ) : $link;

/**
			 * Filter a term link
			 *
			 * @since 1.6
			 *
			 * @param string       $link The term link.
			 * @param PLL_Language $lang The current language.
			 * @param WP_Term      $term The term object.
			 */
			return apply_filters( 'pll_term_link', $link, $lang, $term );
		}

// In case someone calls get_term_link for the 'language' taxonomy.
		if ( 'language' === $tax ) {
			$lang = $this->model->get_language( $term->term_id );
			if ( $lang ) {
				return $this->links_model->home_url( $lang );
			}
		}

return $link;
	}

/**
	 * Keeps the preview post link on default domain when using multiple domains.
	 *
	 * @since 1.6.1
	 *
	 * @param string $url URL used for the post preview.
	 * @return string The modified url.
	 */
	public function preview_post_link( $url ) {
		return $this->links_model->remove_language_from_link( $url );
	}

/**
	 * Modifies the post type archive links to add the language parameter
	 * only if the post type is translated.
	 *
	 * The filter was originally only on frontend but is needed on admin too for
	 * compatibility with the archive link of the ACF link field since ACF 5.4.0.
	 *
	 * @since 1.7.6
	 *
	 * @param string $link      The post type archive permalink.
	 * @param string $post_type Post type name.
	 * @return string
	 */
	public function post_type_archive_link( $link, $post_type ) {
		return $this->model->is_translated_post_type( $post_type ) && 'post' !== $post_type ? $this->links_model->switch_language_in_link( $link, $this->curlang ) : $link;
	}
}

${this.title}

Code Editor : filters-links.php