wpsso / lib / integ / lang / polylang.php

polylang.php in WPSSO Core – Complete Schema Markup and Meta Tags 22.7.0, at lib/integ/lang/polylang.php

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1	<?php
2	/*
3	* License: GPLv3
4	* License URI: https://www.gnu.org/licenses/gpl.txt
5	* Copyright 2012-2026 Jean-Sebastien Morisset (https://wpsso.com/)
6	*/
7
8	if ( ! defined( 'ABSPATH' ) ) {
9
10	die( 'These aren\'t the droids you\'re looking for.' );
11	}
12
13	if ( ! class_exists( 'WpssoIntegLangPolylang' ) ) {
14
15	class WpssoIntegLangPolylang {
16
17	private $p; // Wpsso class object.
18
19	public function __construct( &$plugin ) {
20
21	$this->p =& $plugin;
22
23	if ( $this->p->debug->enabled ) {
24
25	$this->p->debug->mark();
26	}
27
28	$this->p->util->add_plugin_filters( $this, array(
29	'home_url' => 2,
30	'sitemaps_alternates' => 2,
31	) );
32
33	$this->p->util->add_plugin_filters( $this, array(
34	'available_feed_locale_names' => 1,
35	'get_locale' => 2,
36	), $prio = 200, $ext = 'sucom' ); // Note the 'sucom' filter prefix.
37	}
38
39	public function filter_home_url( $url, $mod ) {
40
41	if ( function_exists( 'pll_home_url' ) ) { // Just in case.
42
43	return pll_home_url();
44	}
45
46	return $url;
47	}
48
49	public function filter_sitemaps_alternates( $alternates, $mod ) {
50
51	if ( $this->p->debug->enabled ) {
52
53	$this->p->debug->mark();
54	}
55
56	if ( $mod[ 'is_post' ] ) {
57
58	$translations = pll_get_post_translations( $mod[ 'id' ] );
59
60	if ( $this->p->debug->enabled ) {
61
62	$this->p->debug->log_arr( 'translations', $translations );
63	}
64
65	foreach ( $translations as $lang_code => $post_id ) {
66
67	$transl_mod = $this->p->post->get_mod( $post_id );
68
69	$alternates[] = array(
70	'href' => $this->p->util->get_canonical_url( $transl_mod ),
71	'hreflang' => $this->p->schema->get_schema_lang( $transl_mod ),
72	);
73	}
74
75	} elseif ( $mod[ 'is_term' ] ) {
76
77	$translations = pll_get_term_translations( $mod[ 'id' ] );
78
79	if ( $this->p->debug->enabled ) {
80
81	$this->p->debug->log_arr( 'translations', $translations );
82	}
83
84	foreach ( $translations as $lang_code => $term_id ) {
85
86	$transl_mod = $this->p->term->get_mod( $term_id );
87
88	$alternates[] = array(
89	'href' => $this->p->util->get_canonical_url( $transl_mod ),
90	'hreflang' => $this->p->schema->get_schema_lang( $transl_mod ),
91	);
92	}
93	}
94
95	return $alternates;
96	}
97
98	public function filter_available_feed_locale_names( $locale_names ) {
99
100	$languages = pll_languages_list( array( 'fields' => array() ) );
101
102	$locale_names = array();
103
104	foreach ( $languages as $lang_obj ) {
105
106	$locale_names[ $lang_obj->locale ] = $lang_obj->name;
107	}
108
109	return $locale_names;
110	}
111
112	/*
113	* Argument can also be a numeric post ID, to return the language of that post.
114	*/
115	public function filter_get_locale( $wp_locale, $mixed = 'current' ) {
116
117	if ( $this->p->debug->enabled ) {
118
119	$this->p->debug->log( 'wp locale = ' . $wp_locale );
120	}
121
122	$pll_locale = false;
123
124	switch ( true ) {
125
126	case ( is_array( $mixed ) ):
127
128	if ( $mixed[ 'id' ] > 0 ) { // Just in case.
129
130	if ( $mixed[ 'is_post' ] ) {
131
132	$pll_locale = $this->get_post_language( $mixed[ 'id' ] );
133
134	} elseif ( $mixed[ 'is_term' ] ) {
135
136	$pll_locale = $this->get_term_language( $mixed[ 'id' ] );
137	}
138
139	if ( $this->p->debug->enabled ) {
140
141	$this->p->debug->log( 'pll_locale for ' . $mixed[ 'name' ] . ' id ' . $mixed[ 'id' ] . ' = ' . $pll_locale );
142	}
143	}
144
145	break;
146
147	case ( is_numeric( $mixed ) ):
148
149	if ( $mixed > 0 ) { // Just in case.
150
151	$pll_locale = $this->get_post_language( $mixed );
152
153	if ( $this->p->debug->enabled ) {
154
155	$this->p->debug->log( 'pll_locale for post ID ' . $mixed . ' = ' . $pll_locale );
156	}
157	}
158
159	break;
160
161	case ( 'default' === $mixed ):
162
163	if ( function_exists( 'pll_default_language' ) ) {
164
165	$pll_locale = pll_default_language( 'locale' );
166
167	if ( $this->p->debug->enabled ) {
168
169	$this->p->debug->log( 'pll_locale for default = ' . $pll_locale );
170	}
171
172	} elseif ( $this->p->debug->enabled ) {
173
174	$this->p->debug->log( 'pll_default_language function not found' );
175	}
176
177	break;
178
179	case ( 'current' === $mixed ):
180
181	if ( function_exists( 'pll_current_language' ) ) {
182
183	$pll_locale = pll_current_language( 'locale' );
184
185	if ( $this->p->debug->enabled ) {
186
187	$this->p->debug->log( 'pll_locale for current = ' . $pll_locale );
188	}
189
190	} elseif ( $this->p->debug->enabled ) {
191
192	$this->p->debug->log( 'pll_current_language function not found' );
193	}
194
195	break;
196	}
197
198	return $pll_locale ? $pll_locale : $wp_locale;
199	}
200
201	private function get_post_language( $post_id ) {
202
203	$pll_locale = '';
204
205	if ( function_exists( 'pll_get_post_language' ) ) { // Since PLL v1.5.4.
206
207	$pll_locale = pll_get_post_language( $post_id, 'locale' );
208
209	} else {
210
211	global $polylang;
212
213	if ( isset( $polylang->model->post ) ) {
214
215	$pll_lang = $polylang->model->post->get_language( $post_id );
216
217	} elseif ( isset( $polylang->model ) ) {
218
219	$pll_lang = $polylang->model->get_post_language( $post_id );
220	}
221
222	if ( ! empty( $pll_lang ) ) {
223
224	$pll_locale = $pll_lang->locale;
225	}
226	}
227
228	return $pll_locale;
229	}
230
231	private function get_term_language( $term_id ) {
232
233	$pll_locale = '';
234
235	if ( function_exists( 'pll_get_term_language' ) ) { // Since PLL v1.5.4.
236
237	$pll_locale = pll_get_term_language( $term_id, 'locale' );
238
239	} else {
240
241	global $polylang;
242
243	if ( isset( $polylang->model->term ) ) {
244
245	$pll_lang = $polylang->model->term->get_language( $term_id );
246
247	} elseif ( isset( $polylang->model ) ) {
248
249	$pll_lang = $polylang->model->get_term_language( $term_id );
250	}
251
252	if ( ! empty( $pll_lang ) ) {
253
254	$pll_locale = $pll_lang->locale;
255	}
256	}
257
258	return $pll_locale;
259	}
260	}
261	}
262