mirror of
https://github.com/WordPress/WordPress.git
synced 2024-06-27 15:24:59 +02:00
0e3147c40e
Using the canonical function name for PHP functions is strongly recommended, as aliases may be deprecated or removed without (much) warning. This replaces all uses of the following: * `join()` with `implode()` * `sizeof()` with `count()` * `is_writeable()` with `is_writable()` * `doubleval()` with a `(float)` cast In part, this is a follow-up to #47746. Props jrf. See #50767. Built from https://develop.svn.wordpress.org/trunk@49193 git-svn-id: http://core.svn.wordpress.org/trunk@48955 1a063a9b-81f0-0310-95a4-ce76da25c4cd
672 lines
21 KiB
PHP
672 lines
21 KiB
PHP
<?php
|
|
/**
|
|
* WordPress API for creating bbcode-like tags or what WordPress calls
|
|
* "shortcodes". The tag and attribute parsing or regular expression code is
|
|
* based on the Textpattern tag parser.
|
|
*
|
|
* A few examples are below:
|
|
*
|
|
* [shortcode /]
|
|
* [shortcode foo="bar" baz="bing" /]
|
|
* [shortcode foo="bar"]content[/shortcode]
|
|
*
|
|
* Shortcode tags support attributes and enclosed content, but does not entirely
|
|
* support inline shortcodes in other shortcodes. You will have to call the
|
|
* shortcode parser in your function to account for that.
|
|
*
|
|
* {@internal
|
|
* Please be aware that the above note was made during the beta of WordPress 2.6
|
|
* and in the future may not be accurate. Please update the note when it is no
|
|
* longer the case.}}
|
|
*
|
|
* To apply shortcode tags to content:
|
|
*
|
|
* $out = do_shortcode( $content );
|
|
*
|
|
* @link https://developer.wordpress.org/plugins/shortcodes/
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Shortcodes
|
|
* @since 2.5.0
|
|
*/
|
|
|
|
/**
|
|
* Container for storing shortcode tags and their hook to call for the shortcode
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @name $shortcode_tags
|
|
* @var array
|
|
* @global array $shortcode_tags
|
|
*/
|
|
$shortcode_tags = array();
|
|
|
|
/**
|
|
* Adds a new shortcode.
|
|
*
|
|
* Care should be taken through prefixing or other means to ensure that the
|
|
* shortcode tag being added is unique and will not conflict with other,
|
|
* already-added shortcode tags. In the event of a duplicated tag, the tag
|
|
* loaded last will take precedence.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @param string $tag Shortcode tag to be searched in post content.
|
|
* @param callable $callback The callback function to run when the shortcode is found.
|
|
* Every shortcode callback is passed three parameters by default,
|
|
* including an array of attributes (`$atts`), the shortcode content
|
|
* or null if not set (`$content`), and finally the shortcode tag
|
|
* itself (`$shortcode_tag`), in that order.
|
|
*/
|
|
function add_shortcode( $tag, $callback ) {
|
|
global $shortcode_tags;
|
|
|
|
if ( '' === trim( $tag ) ) {
|
|
$message = __( 'Invalid shortcode name: Empty name given.' );
|
|
_doing_it_wrong( __FUNCTION__, $message, '4.4.0' );
|
|
return;
|
|
}
|
|
|
|
if ( 0 !== preg_match( '@[<>&/\[\]\x00-\x20=]@', $tag ) ) {
|
|
/* translators: 1: Shortcode name, 2: Space-separated list of reserved characters. */
|
|
$message = sprintf( __( 'Invalid shortcode name: %1$s. Do not use spaces or reserved characters: %2$s' ), $tag, '& / < > [ ] =' );
|
|
_doing_it_wrong( __FUNCTION__, $message, '4.4.0' );
|
|
return;
|
|
}
|
|
|
|
$shortcode_tags[ $tag ] = $callback;
|
|
}
|
|
|
|
/**
|
|
* Removes hook for shortcode.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @param string $tag Shortcode tag to remove hook for.
|
|
*/
|
|
function remove_shortcode( $tag ) {
|
|
global $shortcode_tags;
|
|
|
|
unset( $shortcode_tags[ $tag ] );
|
|
}
|
|
|
|
/**
|
|
* Clear all shortcodes.
|
|
*
|
|
* This function is simple, it clears all of the shortcode tags by replacing the
|
|
* shortcodes global by a empty array. This is actually a very efficient method
|
|
* for removing all shortcodes.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @global array $shortcode_tags
|
|
*/
|
|
function remove_all_shortcodes() {
|
|
global $shortcode_tags;
|
|
|
|
$shortcode_tags = array();
|
|
}
|
|
|
|
/**
|
|
* Whether a registered shortcode exists named $tag
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @global array $shortcode_tags List of shortcode tags and their callback hooks.
|
|
*
|
|
* @param string $tag Shortcode tag to check.
|
|
* @return bool Whether the given shortcode exists.
|
|
*/
|
|
function shortcode_exists( $tag ) {
|
|
global $shortcode_tags;
|
|
return array_key_exists( $tag, $shortcode_tags );
|
|
}
|
|
|
|
/**
|
|
* Whether the passed content contains the specified shortcode
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @param string $content Content to search for shortcodes.
|
|
* @param string $tag Shortcode tag to check.
|
|
* @return bool Whether the passed content contains the given shortcode.
|
|
*/
|
|
function has_shortcode( $content, $tag ) {
|
|
if ( false === strpos( $content, '[' ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( shortcode_exists( $tag ) ) {
|
|
preg_match_all( '/' . get_shortcode_regex() . '/', $content, $matches, PREG_SET_ORDER );
|
|
if ( empty( $matches ) ) {
|
|
return false;
|
|
}
|
|
|
|
foreach ( $matches as $shortcode ) {
|
|
if ( $tag === $shortcode[2] ) {
|
|
return true;
|
|
} elseif ( ! empty( $shortcode[5] ) && has_shortcode( $shortcode[5], $tag ) ) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Search content for shortcodes and filter shortcodes through their hooks.
|
|
*
|
|
* This function is an alias for do_shortcode().
|
|
*
|
|
* @since 5.4.0
|
|
*
|
|
* @see do_shortcode()
|
|
*
|
|
* @param string $content Content to search for shortcodes.
|
|
* @param bool $ignore_html When true, shortcodes inside HTML elements will be skipped.
|
|
* Default false.
|
|
* @return string Content with shortcodes filtered out.
|
|
*/
|
|
function apply_shortcodes( $content, $ignore_html = false ) {
|
|
return do_shortcode( $content, $ignore_html );
|
|
}
|
|
|
|
/**
|
|
* Search content for shortcodes and filter shortcodes through their hooks.
|
|
*
|
|
* If there are no shortcode tags defined, then the content will be returned
|
|
* without any filtering. This might cause issues when plugins are disabled but
|
|
* the shortcode will still show up in the post or content.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @global array $shortcode_tags List of shortcode tags and their callback hooks.
|
|
*
|
|
* @param string $content Content to search for shortcodes.
|
|
* @param bool $ignore_html When true, shortcodes inside HTML elements will be skipped.
|
|
* Default false.
|
|
* @return string Content with shortcodes filtered out.
|
|
*/
|
|
function do_shortcode( $content, $ignore_html = false ) {
|
|
global $shortcode_tags;
|
|
|
|
if ( false === strpos( $content, '[' ) ) {
|
|
return $content;
|
|
}
|
|
|
|
if ( empty( $shortcode_tags ) || ! is_array( $shortcode_tags ) ) {
|
|
return $content;
|
|
}
|
|
|
|
// Find all registered tag names in $content.
|
|
preg_match_all( '@\[([^<>&/\[\]\x00-\x20=]++)@', $content, $matches );
|
|
$tagnames = array_intersect( array_keys( $shortcode_tags ), $matches[1] );
|
|
|
|
if ( empty( $tagnames ) ) {
|
|
return $content;
|
|
}
|
|
|
|
$content = do_shortcodes_in_html_tags( $content, $ignore_html, $tagnames );
|
|
|
|
$pattern = get_shortcode_regex( $tagnames );
|
|
$content = preg_replace_callback( "/$pattern/", 'do_shortcode_tag', $content );
|
|
|
|
// Always restore square braces so we don't break things like <!--[if IE ]>.
|
|
$content = unescape_invalid_shortcodes( $content );
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the shortcode regular expression for searching.
|
|
*
|
|
* The regular expression combines the shortcode tags in the regular expression
|
|
* in a regex class.
|
|
*
|
|
* The regular expression contains 6 different sub matches to help with parsing.
|
|
*
|
|
* 1 - An extra [ to allow for escaping shortcodes with double [[]]
|
|
* 2 - The shortcode name
|
|
* 3 - The shortcode argument list
|
|
* 4 - The self closing /
|
|
* 5 - The content of a shortcode when it wraps some content.
|
|
* 6 - An extra ] to allow for escaping shortcodes with double [[]]
|
|
*
|
|
* @since 2.5.0
|
|
* @since 4.4.0 Added the `$tagnames` parameter.
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @param array $tagnames Optional. List of shortcodes to find. Defaults to all registered shortcodes.
|
|
* @return string The shortcode search regular expression
|
|
*/
|
|
function get_shortcode_regex( $tagnames = null ) {
|
|
global $shortcode_tags;
|
|
|
|
if ( empty( $tagnames ) ) {
|
|
$tagnames = array_keys( $shortcode_tags );
|
|
}
|
|
$tagregexp = implode( '|', array_map( 'preg_quote', $tagnames ) );
|
|
|
|
// WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcode_tag().
|
|
// Also, see shortcode_unautop() and shortcode.js.
|
|
|
|
// phpcs:disable Squiz.Strings.ConcatenationSpacing.PaddingFound -- don't remove regex indentation
|
|
return '\\[' // Opening bracket.
|
|
. '(\\[?)' // 1: Optional second opening bracket for escaping shortcodes: [[tag]].
|
|
. "($tagregexp)" // 2: Shortcode name.
|
|
. '(?![\\w-])' // Not followed by word character or hyphen.
|
|
. '(' // 3: Unroll the loop: Inside the opening shortcode tag.
|
|
. '[^\\]\\/]*' // Not a closing bracket or forward slash.
|
|
. '(?:'
|
|
. '\\/(?!\\])' // A forward slash not followed by a closing bracket.
|
|
. '[^\\]\\/]*' // Not a closing bracket or forward slash.
|
|
. ')*?'
|
|
. ')'
|
|
. '(?:'
|
|
. '(\\/)' // 4: Self closing tag...
|
|
. '\\]' // ...and closing bracket.
|
|
. '|'
|
|
. '\\]' // Closing bracket.
|
|
. '(?:'
|
|
. '(' // 5: Unroll the loop: Optionally, anything between the opening and closing shortcode tags.
|
|
. '[^\\[]*+' // Not an opening bracket.
|
|
. '(?:'
|
|
. '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag.
|
|
. '[^\\[]*+' // Not an opening bracket.
|
|
. ')*+'
|
|
. ')'
|
|
. '\\[\\/\\2\\]' // Closing shortcode tag.
|
|
. ')?'
|
|
. ')'
|
|
. '(\\]?)'; // 6: Optional second closing brocket for escaping shortcodes: [[tag]].
|
|
// phpcs:enable
|
|
}
|
|
|
|
/**
|
|
* Regular Expression callable for do_shortcode() for calling shortcode hook.
|
|
*
|
|
* @see get_shortcode_regex() for details of the match array contents.
|
|
*
|
|
* @since 2.5.0
|
|
* @access private
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @param array $m Regular expression match array
|
|
* @return string|false False on failure.
|
|
*/
|
|
function do_shortcode_tag( $m ) {
|
|
global $shortcode_tags;
|
|
|
|
// Allow [[foo]] syntax for escaping a tag.
|
|
if ( '[' === $m[1] && ']' === $m[6] ) {
|
|
return substr( $m[0], 1, -1 );
|
|
}
|
|
|
|
$tag = $m[2];
|
|
$attr = shortcode_parse_atts( $m[3] );
|
|
|
|
if ( ! is_callable( $shortcode_tags[ $tag ] ) ) {
|
|
/* translators: %s: Shortcode tag. */
|
|
$message = sprintf( __( 'Attempting to parse a shortcode without a valid callback: %s' ), $tag );
|
|
_doing_it_wrong( __FUNCTION__, $message, '4.3.0' );
|
|
return $m[0];
|
|
}
|
|
|
|
/**
|
|
* Filters whether to call a shortcode callback.
|
|
*
|
|
* Returning a non-false value from filter will short-circuit the
|
|
* shortcode generation process, returning that value instead.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @param false|string $return Short-circuit return value. Either false or the value to replace the shortcode with.
|
|
* @param string $tag Shortcode name.
|
|
* @param array|string $attr Shortcode attributes array or empty string.
|
|
* @param array $m Regular expression match array.
|
|
*/
|
|
$return = apply_filters( 'pre_do_shortcode_tag', false, $tag, $attr, $m );
|
|
if ( false !== $return ) {
|
|
return $return;
|
|
}
|
|
|
|
$content = isset( $m[5] ) ? $m[5] : null;
|
|
|
|
$output = $m[1] . call_user_func( $shortcode_tags[ $tag ], $attr, $content, $tag ) . $m[6];
|
|
|
|
/**
|
|
* Filters the output created by a shortcode callback.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @param string $output Shortcode output.
|
|
* @param string $tag Shortcode name.
|
|
* @param array|string $attr Shortcode attributes array or empty string.
|
|
* @param array $m Regular expression match array.
|
|
*/
|
|
return apply_filters( 'do_shortcode_tag', $output, $tag, $attr, $m );
|
|
}
|
|
|
|
/**
|
|
* Search only inside HTML elements for shortcodes and process them.
|
|
*
|
|
* Any [ or ] characters remaining inside elements will be HTML encoded
|
|
* to prevent interference with shortcodes that are outside the elements.
|
|
* Assumes $content processed by KSES already. Users with unfiltered_html
|
|
* capability may get unexpected output if angle braces are nested in tags.
|
|
*
|
|
* @since 4.2.3
|
|
*
|
|
* @param string $content Content to search for shortcodes.
|
|
* @param bool $ignore_html When true, all square braces inside elements will be encoded.
|
|
* @param array $tagnames List of shortcodes to find.
|
|
* @return string Content with shortcodes filtered out.
|
|
*/
|
|
function do_shortcodes_in_html_tags( $content, $ignore_html, $tagnames ) {
|
|
// Normalize entities in unfiltered HTML before adding placeholders.
|
|
$trans = array(
|
|
'[' => '[',
|
|
']' => ']',
|
|
);
|
|
$content = strtr( $content, $trans );
|
|
$trans = array(
|
|
'[' => '[',
|
|
']' => ']',
|
|
);
|
|
|
|
$pattern = get_shortcode_regex( $tagnames );
|
|
$textarr = wp_html_split( $content );
|
|
|
|
foreach ( $textarr as &$element ) {
|
|
if ( '' === $element || '<' !== $element[0] ) {
|
|
continue;
|
|
}
|
|
|
|
$noopen = false === strpos( $element, '[' );
|
|
$noclose = false === strpos( $element, ']' );
|
|
if ( $noopen || $noclose ) {
|
|
// This element does not contain shortcodes.
|
|
if ( $noopen xor $noclose ) {
|
|
// Need to encode stray '[' or ']' chars.
|
|
$element = strtr( $element, $trans );
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if ( $ignore_html || '<!--' === substr( $element, 0, 4 ) || '<![CDATA[' === substr( $element, 0, 9 ) ) {
|
|
// Encode all '[' and ']' chars.
|
|
$element = strtr( $element, $trans );
|
|
continue;
|
|
}
|
|
|
|
$attributes = wp_kses_attr_parse( $element );
|
|
if ( false === $attributes ) {
|
|
// Some plugins are doing things like [name] <[email]>.
|
|
if ( 1 === preg_match( '%^<\s*\[\[?[^\[\]]+\]%', $element ) ) {
|
|
$element = preg_replace_callback( "/$pattern/", 'do_shortcode_tag', $element );
|
|
}
|
|
|
|
// Looks like we found some crazy unfiltered HTML. Skipping it for sanity.
|
|
$element = strtr( $element, $trans );
|
|
continue;
|
|
}
|
|
|
|
// Get element name.
|
|
$front = array_shift( $attributes );
|
|
$back = array_pop( $attributes );
|
|
$matches = array();
|
|
preg_match( '%[a-zA-Z0-9]+%', $front, $matches );
|
|
$elname = $matches[0];
|
|
|
|
// Look for shortcodes in each attribute separately.
|
|
foreach ( $attributes as &$attr ) {
|
|
$open = strpos( $attr, '[' );
|
|
$close = strpos( $attr, ']' );
|
|
if ( false === $open || false === $close ) {
|
|
continue; // Go to next attribute. Square braces will be escaped at end of loop.
|
|
}
|
|
$double = strpos( $attr, '"' );
|
|
$single = strpos( $attr, "'" );
|
|
if ( ( false === $single || $open < $single ) && ( false === $double || $open < $double ) ) {
|
|
/*
|
|
* $attr like '[shortcode]' or 'name = [shortcode]' implies unfiltered_html.
|
|
* In this specific situation we assume KSES did not run because the input
|
|
* was written by an administrator, so we should avoid changing the output
|
|
* and we do not need to run KSES here.
|
|
*/
|
|
$attr = preg_replace_callback( "/$pattern/", 'do_shortcode_tag', $attr );
|
|
} else {
|
|
// $attr like 'name = "[shortcode]"' or "name = '[shortcode]'".
|
|
// We do not know if $content was unfiltered. Assume KSES ran before shortcodes.
|
|
$count = 0;
|
|
$new_attr = preg_replace_callback( "/$pattern/", 'do_shortcode_tag', $attr, -1, $count );
|
|
if ( $count > 0 ) {
|
|
// Sanitize the shortcode output using KSES.
|
|
$new_attr = wp_kses_one_attr( $new_attr, $elname );
|
|
if ( '' !== trim( $new_attr ) ) {
|
|
// The shortcode is safe to use now.
|
|
$attr = $new_attr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$element = $front . implode( '', $attributes ) . $back;
|
|
|
|
// Now encode any remaining '[' or ']' chars.
|
|
$element = strtr( $element, $trans );
|
|
}
|
|
|
|
$content = implode( '', $textarr );
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Remove placeholders added by do_shortcodes_in_html_tags().
|
|
*
|
|
* @since 4.2.3
|
|
*
|
|
* @param string $content Content to search for placeholders.
|
|
* @return string Content with placeholders removed.
|
|
*/
|
|
function unescape_invalid_shortcodes( $content ) {
|
|
// Clean up entire string, avoids re-parsing HTML.
|
|
$trans = array(
|
|
'[' => '[',
|
|
']' => ']',
|
|
);
|
|
|
|
$content = strtr( $content, $trans );
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Retrieve the shortcode attributes regex.
|
|
*
|
|
* @since 4.4.0
|
|
*
|
|
* @return string The shortcode attribute regular expression
|
|
*/
|
|
function get_shortcode_atts_regex() {
|
|
return '/([\w-]+)\s*=\s*"([^"]*)"(?:\s|$)|([\w-]+)\s*=\s*\'([^\']*)\'(?:\s|$)|([\w-]+)\s*=\s*([^\s\'"]+)(?:\s|$)|"([^"]*)"(?:\s|$)|\'([^\']*)\'(?:\s|$)|(\S+)(?:\s|$)/';
|
|
}
|
|
|
|
/**
|
|
* Retrieve all attributes from the shortcodes tag.
|
|
*
|
|
* The attributes list has the attribute name as the key and the value of the
|
|
* attribute as the value in the key/value pair. This allows for easier
|
|
* retrieval of the attributes, since all attributes have to be known.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param string $text
|
|
* @return array|string List of attribute values.
|
|
* Returns empty array if '""' === trim( $text ).
|
|
* Returns empty string if '' === trim( $text ).
|
|
* All other matches are checked for not empty().
|
|
*/
|
|
function shortcode_parse_atts( $text ) {
|
|
$atts = array();
|
|
$pattern = get_shortcode_atts_regex();
|
|
$text = preg_replace( "/[\x{00a0}\x{200b}]+/u", ' ', $text );
|
|
if ( preg_match_all( $pattern, $text, $match, PREG_SET_ORDER ) ) {
|
|
foreach ( $match as $m ) {
|
|
if ( ! empty( $m[1] ) ) {
|
|
$atts[ strtolower( $m[1] ) ] = stripcslashes( $m[2] );
|
|
} elseif ( ! empty( $m[3] ) ) {
|
|
$atts[ strtolower( $m[3] ) ] = stripcslashes( $m[4] );
|
|
} elseif ( ! empty( $m[5] ) ) {
|
|
$atts[ strtolower( $m[5] ) ] = stripcslashes( $m[6] );
|
|
} elseif ( isset( $m[7] ) && strlen( $m[7] ) ) {
|
|
$atts[] = stripcslashes( $m[7] );
|
|
} elseif ( isset( $m[8] ) && strlen( $m[8] ) ) {
|
|
$atts[] = stripcslashes( $m[8] );
|
|
} elseif ( isset( $m[9] ) ) {
|
|
$atts[] = stripcslashes( $m[9] );
|
|
}
|
|
}
|
|
|
|
// Reject any unclosed HTML elements.
|
|
foreach ( $atts as &$value ) {
|
|
if ( false !== strpos( $value, '<' ) ) {
|
|
if ( 1 !== preg_match( '/^[^<]*+(?:<[^>]*+>[^<]*+)*+$/', $value ) ) {
|
|
$value = '';
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
$atts = ltrim( $text );
|
|
}
|
|
|
|
return $atts;
|
|
}
|
|
|
|
/**
|
|
* Combine user attributes with known attributes and fill in defaults when needed.
|
|
*
|
|
* The pairs should be considered to be all of the attributes which are
|
|
* supported by the caller and given as a list. The returned attributes will
|
|
* only contain the attributes in the $pairs list.
|
|
*
|
|
* If the $atts list has unsupported attributes, then they will be ignored and
|
|
* removed from the final returned list.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param array $pairs Entire list of supported attributes and their defaults.
|
|
* @param array $atts User defined attributes in shortcode tag.
|
|
* @param string $shortcode Optional. The name of the shortcode, provided for context to enable filtering
|
|
* @return array Combined and filtered attribute list.
|
|
*/
|
|
function shortcode_atts( $pairs, $atts, $shortcode = '' ) {
|
|
$atts = (array) $atts;
|
|
$out = array();
|
|
foreach ( $pairs as $name => $default ) {
|
|
if ( array_key_exists( $name, $atts ) ) {
|
|
$out[ $name ] = $atts[ $name ];
|
|
} else {
|
|
$out[ $name ] = $default;
|
|
}
|
|
}
|
|
|
|
if ( $shortcode ) {
|
|
/**
|
|
* Filters shortcode attributes.
|
|
*
|
|
* If the third parameter of the shortcode_atts() function is present then this filter is available.
|
|
* The third parameter, $shortcode, is the name of the shortcode.
|
|
*
|
|
* @since 3.6.0
|
|
* @since 4.4.0 Added the `$shortcode` parameter.
|
|
*
|
|
* @param array $out The output array of shortcode attributes.
|
|
* @param array $pairs The supported attributes and their defaults.
|
|
* @param array $atts The user defined shortcode attributes.
|
|
* @param string $shortcode The shortcode name.
|
|
*/
|
|
$out = apply_filters( "shortcode_atts_{$shortcode}", $out, $pairs, $atts, $shortcode );
|
|
}
|
|
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Remove all shortcode tags from the given content.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @global array $shortcode_tags
|
|
*
|
|
* @param string $content Content to remove shortcode tags.
|
|
* @return string Content without shortcode tags.
|
|
*/
|
|
function strip_shortcodes( $content ) {
|
|
global $shortcode_tags;
|
|
|
|
if ( false === strpos( $content, '[' ) ) {
|
|
return $content;
|
|
}
|
|
|
|
if ( empty( $shortcode_tags ) || ! is_array( $shortcode_tags ) ) {
|
|
return $content;
|
|
}
|
|
|
|
// Find all registered tag names in $content.
|
|
preg_match_all( '@\[([^<>&/\[\]\x00-\x20=]++)@', $content, $matches );
|
|
|
|
$tags_to_remove = array_keys( $shortcode_tags );
|
|
|
|
/**
|
|
* Filters the list of shortcode tags to remove from the content.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @param array $tags_to_remove Array of shortcode tags to remove.
|
|
* @param string $content Content shortcodes are being removed from.
|
|
*/
|
|
$tags_to_remove = apply_filters( 'strip_shortcodes_tagnames', $tags_to_remove, $content );
|
|
|
|
$tagnames = array_intersect( $tags_to_remove, $matches[1] );
|
|
|
|
if ( empty( $tagnames ) ) {
|
|
return $content;
|
|
}
|
|
|
|
$content = do_shortcodes_in_html_tags( $content, true, $tagnames );
|
|
|
|
$pattern = get_shortcode_regex( $tagnames );
|
|
$content = preg_replace_callback( "/$pattern/", 'strip_shortcode_tag', $content );
|
|
|
|
// Always restore square braces so we don't break things like <!--[if IE ]>.
|
|
$content = unescape_invalid_shortcodes( $content );
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Strips a shortcode tag based on RegEx matches against post content.
|
|
*
|
|
* @since 3.3.0
|
|
*
|
|
* @param array $m RegEx matches against post content.
|
|
* @return string|false The content stripped of the tag, otherwise false.
|
|
*/
|
|
function strip_shortcode_tag( $m ) {
|
|
// Allow [[foo]] syntax for escaping a tag.
|
|
if ( '[' === $m[1] && ']' === $m[6] ) {
|
|
return substr( $m[0], 1, -1 );
|
|
}
|
|
|
|
return $m[1] . $m[6];
|
|
}
|