elementor / modules / markdown-render / markdown-renderer.php

markdown-renderer.php in Elementor Website Builder – more than just a page builder 4.3.0-beta1, at modules/markdown-render/markdown-renderer.php

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1	<?php
2	namespace Elementor\Modules\MarkdownRender;
3
4	use Elementor\Core\Base\Document;
5	use Elementor\Plugin;
6
7	if ( ! defined( 'ABSPATH' ) ) {
8	exit;
9	}
10
11	class Markdown_Renderer {
12
13	public function render( Document $document ): string {
14	return Module::execute_while_rendering_markdown( function () use ( $document ) {
15	$frontmatter = $this->build_frontmatter( $document );
16	$data = $document->get_elements_data();
17
18	if ( empty( $data ) ) {
19	return $frontmatter;
20	}
21
22	$sections = [];
23
24	foreach ( $data as $element_data ) {
25	$md = $this->render_element( $element_data );
26
27	if ( ! empty( trim( $md ) ) ) {
28	$sections[] = $md;
29	}
30	}
31
32	$body = implode( "\n\n---\n\n", $sections );
33
34	$output = $frontmatter . "\n\n" . $body;
35
36	return apply_filters( 'elementor/markdown/document_output', $output, $document );
37	} );
38	}
39
40	public function render_elements_data( array $elements_data ): string {
41	return Module::execute_while_rendering_markdown( function () use ( $elements_data ) {
42	if ( empty( $elements_data ) ) {
43	return '';
44	}
45
46	$sections = [];
47
48	foreach ( $elements_data as $element_data ) {
49	$md = $this->render_element( $element_data );
50
51	if ( ! empty( trim( $md ) ) ) {
52	$sections[] = $md;
53	}
54	}
55
56	return implode( "\n\n", $sections );
57	} );
58	}
59
60	private function build_frontmatter( Document $document ): string {
61	$post_id = $document->get_main_id();
62
63	$lines = [ '---' ];
64	$lines[] = 'title: "' . $this->escape_yaml_string( get_the_title( $post_id ) ) . '"';
65
66	$description = $this->get_meta_description( $post_id );
67
68	if ( $description ) {
69	$lines[] = 'description: "' . $this->escape_yaml_string( $description ) . '"';
70	}
71
72	$thumbnail = get_the_post_thumbnail_url( $post_id, 'full' );
73
74	if ( $thumbnail ) {
75	$lines[] = 'featured_image: "' . esc_url( $thumbnail ) . '"';
76	}
77
78	$permalink = get_permalink( $post_id );
79
80	if ( is_string( $permalink ) && '' !== $permalink ) {
81	$lines[] = 'url: "' . esc_url( $permalink ) . '"';
82	}
83
84	$modified_date = get_the_modified_date( 'c', $post_id );
85
86	if ( is_string( $modified_date ) && '' !== $modified_date ) {
87	$lines[] = 'date_modified: "' . $this->escape_yaml_string( $modified_date ) . '"';
88	}
89
90	$lines[] = '---';
91
92	return implode( "\n", $lines );
93	}
94
95	private function get_meta_description( int $post_id ): string {
96	$description = get_post_meta( $post_id, '_yoast_wpseo_metadesc', true );
97
98	if ( ! empty( $description ) ) {
99	return $description;
100	}
101
102	$description = get_post_meta( $post_id, '_aioseo_description', true );
103
104	if ( ! empty( $description ) ) {
105	return $description;
106	}
107
108	$excerpt = get_the_excerpt( $post_id );
109
110	return ! empty( $excerpt ) ? $excerpt : '';
111	}
112
113	private function render_element( array $element_data ): string {
114	$element = Plugin::$instance->elements_manager->create_element_instance( $element_data );
115
116	if ( ! $element ) {
117	return '';
118	}
119
120	$markdown = $element->render_markdown();
121
122	return apply_filters( 'elementor/markdown/element_output', $markdown, $element, $element_data );
123	}
124
125	private function escape_yaml_string( string $value ): string {
126	$value = html_entity_decode( $value, ENT_QUOTES \| ENT_HTML5, 'UTF-8' );
127	$value = str_replace( "\xE2\x80\x8B", '', $value );
128	$value = preg_replace( '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/', '', $value );
129
130	return strtr( $value, [
131	'\\' => '\\\\',
132	'"' => '\\"',
133	"\n" => '\\n',
134	"\r" => '\\r',
135	"\t" => '\\t',
136	] );
137	}
138	}
139