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wp-content/plugins/polylang/include/links-abstract-domain.php

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+<?php
+/**
+ * @package Polylang
+ */
+
+/**
+ * Links model for use when using one domain or subdomain per language.
+ *
+ * @since 2.0
+ */
+abstract class PLL_Links_Abstract_Domain extends PLL_Links_Permalinks {
+
+	/**
+	 * Constructor.
+	 *
+	 * @since 2.0
+	 *
+	 * @param PLL_Model $model Instance of PLL_Model.
+	 */
+	public function __construct( &$model ) {
+		parent::__construct( $model );
+
+		// Avoid cross domain requests (mainly for custom fonts).
+		add_filter( 'content_url', array( $this, 'site_url' ) );
+		add_filter( 'theme_root_uri', array( $this, 'site_url' ) ); // The above filter is not sufficient with WPMU Domain Mapping.
+		add_filter( 'plugins_url', array( $this, 'site_url' ) );
+		add_filter( 'rest_url', array( $this, 'site_url' ) );
+		add_filter( 'upload_dir', array( $this, 'upload_dir' ) );
+
+		// Set the correct domain for each language.
+		add_filter( 'pll_language_flag_url', array( $this, 'site_url' ) );
+	}
+
+	/**
+	 * Returns the language based on the language code in url.
+	 *
+	 * @since 1.2
+	 * @since 2.0 Add the $url argument.
+	 *
+	 * @param string $url Optional, defaults to the current url.
+	 * @return string Language slug.
+	 */
+	public function get_language_from_url( $url = '' ) {
+		if ( empty( $url ) ) {
+			$url = pll_get_requested_url();
+		}
+
+		$host = wp_parse_url( $url, PHP_URL_HOST );
+		return ( $lang = array_search( $host, $this->get_hosts() ) ) ? $lang : '';
+	}
+
+	/**
+	 * Modifies an url to use the domain associated to the current language.
+	 *
+	 * @since 1.8
+	 *
+	 * @param string $url The url to modify.
+	 * @return string The modified url.
+	 */
+	public function site_url( $url ) {
+		$lang = $this->get_language_from_url();
+
+		$lang = $this->model->get_language( $lang );
+
+		return $this->add_language_to_link( $url, $lang );
+	}
+
+	/**
+	 * Fixes the domain for the upload directory.
+	 *
+	 * @since 2.0.6
+	 *
+	 * @param array $uploads Array of information about the upload directory. @see wp_upload_dir().
+	 * @return array
+	 */
+	public function upload_dir( $uploads ) {
+		$lang = $this->get_language_from_url();
+		$lang = $this->model->get_language( $lang );
+		$uploads['url'] = $this->add_language_to_link( $uploads['url'], $lang );
+		$uploads['baseurl'] = $this->add_language_to_link( $uploads['baseurl'], $lang );
+		return $uploads;
+	}
+
+	/**
+	 * Adds home and search URLs to language data before the object is created.
+	 *
+	 * @since 3.4.1
+	 *
+	 * @param array $additional_data Array of language additional data.
+	 * @param array $language        Language data.
+	 * @return array Language data with home and search URLs added.
+	 */
+	public function set_language_home_urls( $additional_data, $language ) {
+		$language = array_merge( $language, $additional_data );
+		$additional_data['search_url'] = $this->home_url( $language['slug'] );
+		$additional_data['home_url']   = $additional_data['search_url'];
+		return $additional_data;
+	}
+
+	/**
+	 * Returns language home URL property according to the current domain.
+	 *
+	 * @since 3.4.4
+	 *
+	 * @param string $url      Home URL.
+	 * @param array  $language Array of language props.
+	 * @return string Filtered home URL.
+	 */
+	public function set_language_home_url( $url, $language ) {
+		return $this->home_url( $language['slug'] );
+	}
+}