polylang / include / links-permalinks.php

links-permalinks.php in Polylang 2.4, at include/links-permalinks.php

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1	<?php
2
3	/**
4	* Links model base class when using pretty permalinks
5	*
6	* @since 1.6
7	*/
8	abstract class PLL_Links_Permalinks extends PLL_Links_Model {
9	public $using_permalinks = true;
10	protected $index = 'index.php'; // Need this before $wp_rewrite is created, also hardcoded in wp-includes/rewrite.php
11	protected $root, $use_trailing_slashes;
12	protected $always_rewrite = array( 'date', 'root', 'comments', 'search', 'author' );
13
14	/**
15	* Constructor
16	*
17	* @since 1.8
18	*
19	* @param object $model PLL_Model instance
20	*/
21	public function __construct( &$model ) {
22	parent::__construct( $model );
23
24	// Inspired by wp-includes/rewrite.php
25	$permalink_structure = get_option( 'permalink_structure' );
26	$this->root = preg_match( '#^/*' . $this->index . '#', $permalink_structure ) ? $this->index . '/' : '';
27	$this->use_trailing_slashes = ( '/' == substr( $permalink_structure, -1, 1 ) );
28	}
29
30	/**
31	* Returns the link to the first page when using pretty permalinks
32	*
33	* @since 1.2
34	*
35	* @param string $url url to modify
36	* @return string modified url
37	*/
38	public function remove_paged_from_link( $url ) {
39	/**
40	* Filter an url after the paged part has been removed
41	*
42	* @since 2.0.6
43	*
44	* @param string $modified_url The link to the first page
45	* @param string $original_url The link to the original paged page
46	*/
47	return apply_filters( 'pll_remove_paged_from_link', preg_replace( '#\/page\/[0-9]+\/?#', $this->use_trailing_slashes ? '/' : '', $url ), $url );
48	}
49
50	/**
51	* Returns the link to the paged page when using pretty permalinks
52	*
53	* @since 1.5
54	*
55	* @param string $url url to modify
56	* @param int $page
57	* @return string modified url
58	*/
59	public function add_paged_to_link( $url, $page ) {
60	/**
61	* Filter an url after the paged part has been added
62	*
63	* @since 2.0.6
64	*
65	* @param string $modified_url The link to the paged page
66	* @param string $original_url The link to the original first page
67	* @param int $page The page number
68	*/
69	return apply_filters( 'pll_add_paged_to_link', user_trailingslashit( trailingslashit( $url ) . 'page/' . $page, 'paged' ), $url, $page );
70	}
71
72	/**
73	* Returns the home url
74	*
75	* @since 1.3.1
76	*
77	* @param object $lang PLL_Language object
78	* @return string
79	*/
80	public function home_url( $lang ) {
81	return trailingslashit( parent::home_url( $lang ) );
82	}
83
84	/**
85	* Returns the static front page url
86	*
87	* @since 1.8
88	*
89	* @param object $lang
90	* @return string
91	*/
92	public function front_page_url( $lang ) {
93	if ( $this->options['hide_default'] && $lang->slug == $this->options['default_lang'] ) {
94	return trailingslashit( $this->home );
95	}
96	$url = home_url( $this->root . get_page_uri( $lang->page_on_front ) );
97	$url = $this->use_trailing_slashes ? trailingslashit( $url ) : untrailingslashit( $url );
98	return $this->options['force_lang'] ? $this->add_language_to_link( $url, $lang ) : $url;
99	}
100
101	/**
102	* Prepares rewrite rules filters
103	*
104	* @since 1.6
105	*/
106	public function get_rewrite_rules_filters() {
107	// Make sure we have the right post types and taxonomies
108	$types = array_values( array_merge( $this->model->get_translated_post_types(), $this->model->get_translated_taxonomies(), $this->model->get_filtered_taxonomies() ) );
109	$types = array_merge( $this->always_rewrite, $types );
110
111	/**
112	* Filter the list of rewrite rules filters to be used by Polylang
113	*
114	* @since 0.8.1
115	*
116	* @param array $types the list of filters (without '_rewrite_rules' at the end)
117	*/
118	return apply_filters( 'pll_rewrite_rules', $types );
119	}
120	}
121