embed-privacy / inc / integration / class-x.php

class-x.php in Embed Privacy trunk, at inc/integration/class-x.php

114 lines 3.4 KB

Raw Download Zip

1	<?php
2	namespace epiphyt\Embed_Privacy\integration;
3
4	use DOMDocument;
5	use DOMElement;
6	use DOMXPath;
7
8	/**
9	* Twitter/X integration for Embed Privacy.
10	*
11	* @author Epiphyt
12	* @license GPL2
13	* @package epiphyt\Embed_Privacy
14	* @since 1.10.5
15	*/
16	class X {
17	/**
18	* Initialize functionality.
19	*/
20	public static function init() {
21	\add_filter( 'embed_privacy_custom_oembed_replacement', [ self::class, 'set_local_tweet' ], 10, 3 );
22	}
23
24	/**
25	* Transform a tweet into a local one.
26	*
27	* @param string $html Embed code
28	* @return string Local embed
29	*/
30	public static function get_local_tweet( $html ) {
31	\libxml_use_internal_errors( true );
32	$dom = new DOMDocument();
33	$dom->loadHTML(
34	'<html><meta charset="utf-8">' . $html . '</html>',
35	\LIBXML_HTML_NOIMPLIED \| \LIBXML_HTML_NODEFDTD
36	);
37
38	// phpcs:disable WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
39	// remove script tag
40	foreach ( $dom->getElementsByTagName( 'script' ) as $script ) {
41	$script->parentNode->removeChild( $script );
42	}
43
44	$xpath = new DOMXPath( $dom );
45
46	// get text node, which represents the author name
47	// and give it a span with class
48	foreach ( $xpath->query( '//blockquote/text()' ) as $node ) {
49	$author_node = $dom->createElement( 'span', $node->nodeValue );
50	$author_node->setAttribute( 'class', 'embed-privacy-author-meta' );
51	$node->parentNode->replaceChild( $author_node, $node );
52	}
53
54	// wrap author name by a meta div
55	/** @var \DOMElement $node */
56	foreach ( $dom->getElementsByTagName( 'span' ) as $node ) {
57	if ( $node->getAttribute( 'class' ) !== 'embed-privacy-author-meta' ) {
58	continue;
59	}
60
61	// create meta cite
62	$parent_node = $dom->createElement( 'cite' );
63	$parent_node->setAttribute( 'class', 'embed-privacy-tweet-meta' );
64	// append created cite to blockquote
65	$node->parentNode->appendChild( $parent_node );
66	// move author meta inside meta cite
67	$parent_node->appendChild( $node );
68	}
69
70	/** @var \DOMElement $link */
71	foreach ( $dom->getElementsByTagName( 'a' ) as $link ) {
72	if (
73	! \preg_match( '/https?:\/\/twitter.com\/([^\/]+)\/status\/(\d+)/', $link->getAttribute( 'href' ) )
74	&& ! \preg_match( '/https?:\/\/x.com\/([^\/]+)\/status\/(\d+)/', $link->getAttribute( 'href' ) )
75	) {
76	continue;
77	}
78
79	// modify date in link to tweet
80	$l10n_date = \wp_date( \get_option( 'date_format' ), \strtotime( $link->nodeValue ) );
81
82	if ( \is_string( $l10n_date ) ) {
83	$link->nodeValue = $l10n_date;
84	}
85
86	// move link inside meta div
87	if ( isset( $parent_node ) && $parent_node instanceof DOMElement ) {
88	$parent_node->appendChild( $link );
89	}
90	}
91
92	$content = $dom->saveHTML( $dom->documentElement );
93	// phpcs:enable
94
95	return \str_replace( [ '<html><meta charset="utf-8">', '</html>' ], [ '<div class="embed-privacy-local-tweet">', '</div>' ], $content );
96	}
97
98	/**
99	* Set local tweets.
100	*
101	* @param string $custom_replacement Current custom replacement
102	* @param string $content The original content
103	* @param \epiphyt\Embed_privacy\embed\Provider $provider Current provider
104	* @return string Original replacement or local tweet
105	*/
106	public static function set_local_tweet( $custom_replacement, $content, $provider ) {
107	if ( $provider->is( 'x' ) && \get_option( 'embed_privacy_local_tweets' ) ) {
108	return self::get_local_tweet( $content );
109	}
110
111	return $custom_replacement;
112	}
113	}
114