jetpack / modules / shortcodes.php

shortcodes.php in Jetpack – WP Security, Backup, Speed, & Growth 14.8, at modules/shortcodes.php

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1	<?php
2	/**
3	* Module Name: Shortcode Embeds
4	* Module Description: Easily embed rich media like YouTube videos and tweets using simple shortcodes.
5	* Sort Order: 3
6	* First Introduced: 1.1
7	* Major Changes In: 1.2
8	* Requires Connection: No
9	* Auto Activate: No
10	* Module Tags: Photos and Videos, Social, Writing, Appearance
11	* Feature: Writing
12	* Additional Search Queries: shortcodes, shortcode, embeds, media, bandcamp, dailymotion, facebook, flickr, google calendars, google maps, polldaddy, recipe, recipes, scribd, slideshare, slideshow, slideshows, soundcloud, ted, twitter, vimeo, vine, youtube
13	*
14	* @package automattic/jetpack
15	*/
16
17	/**
18	* Transforms the $atts array into a string that the old functions expected
19	*
20	* The old way was:
21	* [shortcode a=1&b=2&c=3] or [shortcode=1]
22	* This is parsed as array( a => '1&b=2&c=3' ) and array( 0 => '=1' ), which is useless
23	*
24	* @param array $params Array of old shortcode parameters.
25	* @param bool $old_format_support true if [shortcode=foo] format is possible.
26	*
27	* @return string $params
28	*/
29	function shortcode_new_to_old_params( $params, $old_format_support = false ) {
30	$str = '';
31
32	if ( $old_format_support && isset( $params[0] ) ) {
33	$str = ltrim( $params[0], '=' );
34	} elseif ( is_array( $params ) ) {
35	foreach ( array_keys( $params ) as $key ) {
36	if ( ! is_numeric( $key ) ) {
37	$str = $key . '=' . $params[ $key ];
38	}
39	}
40	}
41
42	return str_replace( array( '&', '&' ), '&', $str );
43	}
44
45	/**
46	* Load all available Jetpack shortcode files.
47	*/
48	function jetpack_load_shortcodes() {
49	// Prevent third-party shortcode plugins when loading shortcode files.
50	// Format: shortcode => condition_when_to_skip
51	$shortcode_skips = array(
52	'soundcloud' => function_exists( 'soundcloud_shortcode' ), // SoundCloud Shortcodes plugin
53	);
54
55	$shortcode_includes = array();
56
57	foreach ( Jetpack::glob_php( __DIR__ . '/shortcodes' ) as $file ) {
58	$filename = substr( basename( $file ), 0, -4 );
59
60	if ( empty( $shortcode_skips[ $filename ] ) ) {
61	$shortcode_includes[ $filename ] = $file;
62	}
63	}
64
65	/**
66	* This filter allows other plugins to override which shortcodes Jetpack loads.
67	*
68	* Fires as part of the `after_setup_theme` WP hook, so modifying code needs to be in a plugin, not in a theme's functions.php.
69	*
70	* @module shortcodes
71	*
72	* @since 2.2.1
73	* @since 4.2.0 Added filename without extension as array key.
74	*
75	* @param array $shortcode_includes An array of which shortcodes to include.
76	*/
77	$shortcode_includes = apply_filters( 'jetpack_shortcodes_to_include', $shortcode_includes );
78
79	foreach ( $shortcode_includes as $include ) {
80	include_once $include;
81	}
82	}
83
84	/**
85	* Runs preg_replace so that replacements don't happen within open tags.
86	* Parameters are the same as preg_replace, with an added optional search param for improved performance
87	*
88	* @param string $pattern Pattern to search for.
89	* @param string $replacement String to replace.
90	* @param string $content Post content.
91	* @param string $search String to search for.
92	*
93	* @return string $content Replaced post content.
94	*/
95	function jetpack_preg_replace_outside_tags( $pattern, $replacement, $content, $search = null ) {
96	if ( $search && ! str_contains( $content, $search ) ) {
97	return $content;
98	}
99
100	$textarr = wp_html_split( $content );
101	unset( $content );
102	foreach ( $textarr as &$element ) {
103	if ( '' === $element \|\| '<' === $element[0] ) {
104	continue;
105	}
106	$element = preg_replace( $pattern, $replacement, $element );
107	}
108
109	return implode( $textarr );
110	}
111
112	/**
113	* Runs preg_replace_callback so that replacements don't happen within open tags.
114	* Parameters are the same as preg_replace, with an added optional search param for improved performance.
115	*
116	* @param string $pattern Pattern to search for.
117	* @param string $callback Callback returning the replacement string.
118	* @param string $content Post content.
119	* @param string $search String to search for.
120	*
121	* @return string $content Replaced post content.
122	*/
123	function jetpack_preg_replace_callback_outside_tags( $pattern, $callback, $content, $search = null ) {
124	if ( $search && ! str_contains( $content, $search ) ) {
125	return $content;
126	}
127
128	$textarr = wp_html_split( $content );
129	unset( $content );
130	foreach ( $textarr as &$element ) {
131	if ( '' === $element \|\| '<' === $element[0] ) {
132	continue;
133	}
134	$element = preg_replace_callback( $pattern, $callback, $element );
135	}
136
137	return implode( $textarr );
138	}
139
140	if ( ! function_exists( 'jetpack_shortcode_get_wpvideo_id' ) ) {
141	/**
142	* Get VideoPress ID from wpvideo shortcode attributes.
143	*
144	* @param array $atts Shortcode attributes.
145	*
146	* @return string\|int $id VideoPress ID.
147	*/
148	function jetpack_shortcode_get_wpvideo_id( $atts ) {
149	if ( isset( $atts[0] ) ) {
150	return $atts[0];
151	} else {
152	return 0;
153	}
154	}
155	}
156
157	if ( ! function_exists( 'jetpack_shortcode_get_videopress_id' ) ) {
158	/**
159	* Get VideoPress ID from videopress shortcode attributes.
160	*
161	* @param array $atts Shortcode attributes.
162	* @return int $id VideoPress ID.
163	*/
164	function jetpack_shortcode_get_videopress_id( $atts ) {
165	if ( isset( $atts[0] ) ) {
166	return $atts[0];
167	} else {
168	return 0;
169	}
170	}
171	}
172
173	/**
174	* Common element attributes parsing and sanitizing for src, width and height.
175	*
176	* @since 4.5.0
177	*
178	* @param array $attrs With original values.
179	*
180	* @return array $attrs With sanitized values.
181	*/
182	function wpcom_shortcodereverse_parseattr( $attrs ) {
183	$defaults = array(
184	'src' => false,
185	'width' => false,
186	'height' => false,
187	);
188
189	$attrs = shortcode_atts( $defaults, $attrs );
190
191	$attrs['src'] = wp_strip_all_tags( $attrs['src'] ); // For sanity.
192	$attrs['width'] = ( is_numeric( $attrs['width'] ) ) ? abs( (int) $attrs['width'] ) : $defaults['width'];
193	$attrs['height'] = ( is_numeric( $attrs['height'] ) ) ? abs( (int) $attrs['height'] ) : $defaults['height'];
194
195	return $attrs;
196	}
197
198	/**
199	* When an embed service goes away, we can use this handler
200	* to output a link for history's sake.
201	*
202	* @param array $matches Regex partial matches against the URL passed.
203	* @param array $attr Attributes received in embed response.
204	* @param string $url Requested URL to be embedded.
205	* @return string Link to output.
206	*/
207	function jetpack_deprecated_embed_handler( $matches, $attr, $url ) {
208	return sprintf( '<a href="%s">%s</a>', esc_url( $url ), esc_html( esc_url( $url ) ) );
209	}
210
211	jetpack_load_shortcodes();
212