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ibute 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;
}
/**
* Removes 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 $content;
}
/**
* Retrieves the shortcode attributes regex.
*
* @since 4.4.0
*
* @return string The shortcode attribute regular expression.
*/
function get_shortcode_atts_regex() {
return '/([\w-]+)\s*=\s*"([^"]*)"(?:\s|$)|([\w-]+)\s*=\s*\'([^\']*)\'(?:\s|$)|([\w-]+)\s*=\s*([^\s\'"]+)(?:\s|$)|"([^"]*)"(?:\s|$)|\'([^\']*)\'(?:\s|$)|(\S+)(?:\s|$)/';
}
/**
* Retrieves 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
* @since 6.5.0 The function now always returns an array,
* even if the original arguments string cannot be parsed or is empty.
*
* @param string $text Shortcode arguments list.
* @return array Array of attribute values keyed by attribute name.
* Returns empty array if there are no attributes
* or if the original arguments string cannot be parsed.
*/
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 ( str_contains( $value, '<' ) ) {
if ( 1 !== preg_match( '/^[^<]*+(?:<[^>]*+>[^<]*+)*+$/', $value ) ) {
$value = '';
}
}
}
}
return $atts;
}
/**
* Combines 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;
}
/**
* Removes 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 ( ! str_contains( $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