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nikolark committed 2015-08-12 20:17:58 +02:00
1 parent b3ac616fe8
commit 6e249f4820
1175 files changed
+305248 -54197
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wp-includes/shortcodes.php
+268 -56
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@@ -21,21 +21,20 @@
*
* To apply shortcode tags to content:
*
* <code>
* $out = do_shortcode($content);
* </code>
* $out = do_shortcode( $content );
*
* @link http://codex.wordpress.org/Shortcode_API
* @link https://codex.wordpress.org/Shortcode_API
*
* @package WordPress
* @subpackage Shortcodes
* @since 2.5
* @since 2.5.0
*/
/**
* Container for storing shortcode tags and their hook to call for the shortcode
*
* @since 2.5
* @since 2.5.0
*
* @name $shortcode_tags
* @var array
* @global array $shortcode_tags
@@ -51,40 +50,37 @@ $shortcode_tags = array();
*
* Simplest example of a shortcode tag using the API:
*
* <code>
* // [footag foo="bar"]
* function footag_func($atts) {
* return "foo = {$atts[foo]}";
* }
* add_shortcode('footag', 'footag_func');
* </code>
* // [footag foo="bar"]
* function footag_func( $atts ) {
* return "foo = {
* $atts[foo]
* }";
* }
* add_shortcode( 'footag', 'footag_func' );
*
* Example with nice attribute defaults:
*
* <code>
* // [bartag foo="bar"]
* function bartag_func($atts) {
* extract(shortcode_atts(array(
* 'foo' => 'no foo',
* 'baz' => 'default baz',
* ), $atts));
* // [bartag foo="bar"]
* function bartag_func( $atts ) {
* $args = shortcode_atts( array(
* 'foo' => 'no foo',
* 'baz' => 'default baz',
* ), $atts );
*
* return "foo = {$foo}";
* }
* add_shortcode('bartag', 'bartag_func');
* </code>
* return "foo = {$args['foo']}";
* }
* add_shortcode( 'bartag', 'bartag_func' );
*
* Example with enclosed content:
*
* <code>
* // [baztag]content[/baztag]
* function baztag_func($atts, $content='') {
* return "content = $content";
* }
* add_shortcode('baztag', 'baztag_func');
* </code>
* // [baztag]content[/baztag]
* function baztag_func( $atts, $content = '' ) {
* return "content = $content";
* }
* add_shortcode( 'baztag', 'baztag_func' );
*
* @since 2.5.0
*
* @since 2.5
* @uses $shortcode_tags
*
* @param string $tag Shortcode tag to be searched in post content.
@@ -100,10 +96,11 @@ function add_shortcode($tag, $func) {
/**
* Removes hook for shortcode.
*
* @since 2.5
* @since 2.5.0
*
* @uses $shortcode_tags
*
* @param string $tag shortcode tag to remove hook for.
* @param string $tag Shortcode tag to remove hook for.
*/
function remove_shortcode($tag) {
global $shortcode_tags;
@@ -118,7 +115,8 @@ function remove_shortcode($tag) {
* shortcodes global by a empty array. This is actually a very efficient method
* for removing all shortcodes.
*
* @since 2.5
* @since 2.5.0
*
* @uses $shortcode_tags
*/
function remove_all_shortcodes() {
@@ -127,6 +125,53 @@ function remove_all_shortcodes() {
$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() . '/s', $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.
*
@@ -134,21 +179,42 @@ function remove_all_shortcodes() {
* 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
* @uses $shortcode_tags
* @uses get_shortcode_regex() Gets the search pattern for searching shortcodes.
* @since 2.5.0
*
* @param string $content Content to search for shortcodes
* @global array $shortcode_tags List of shortcode tags and their callback hooks.
*
* @param string $content Content to search for shortcodes.
* @param bool $ignore_html When true, shortcodes inside HTML elements will be skipped.
* @return string Content with shortcodes filtered out.
*/
function do_shortcode($content) {
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;
$tagnames = array_keys($shortcode_tags);
$tagregexp = join( '|', array_map('preg_quote', $tagnames) );
$pattern = "/\\[($tagregexp)/s";
if ( 1 !== preg_match( $pattern, $content ) ) {
// Avoids parsing HTML when there are no shortcodes or embeds anyway.
return $content;
}
$content = do_shortcodes_in_html_tags( $content, $ignore_html );
$pattern = get_shortcode_regex();
return preg_replace_callback( "/$pattern/s", 'do_shortcode_tag', $content );
$content = preg_replace_callback( "/$pattern/s", 'do_shortcode_tag', $content );
// Always restore square braces so we don't break things like <!--[if IE ]>
$content = unescape_invalid_shortcodes( $content );
return $content;
}
/**
@@ -166,7 +232,8 @@ function do_shortcode($content) {
* 5 - The content of a shortcode when it wraps some content.
* 6 - An extra ] to allow for escaping shortcodes with double [[]]
*
* @since 2.5
* @since 2.5.0
*
* @uses $shortcode_tags
*
* @return string The shortcode search regular expression
@@ -177,11 +244,12 @@ function get_shortcode_regex() {
$tagregexp = join( '|', array_map('preg_quote', $tagnames) );
// WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcode_tag()
// Also, see shortcode_unautop() and shortcode.js.
return
'\\[' // Opening bracket
. '(\\[?)' // 1: Optional second opening bracket for escaping shortcodes: [[tag]]
. "($tagregexp)" // 2: Shortcode name
. '\\b' // Word boundary
. '(?![\\w-])' // Not followed by word character or hyphen
. '(' // 3: Unroll the loop: Inside the opening shortcode tag
. '[^\\]\\/]*' // Not a closing bracket or forward slash
. '(?:'
@@ -212,7 +280,7 @@ function get_shortcode_regex() {
* Regular Expression callable for do_shortcode() for calling shortcode hook.
* @see get_shortcode_regex for details of the match array contents.
*
* @since 2.5
* @since 2.5.0
* @access private
* @uses $shortcode_tags
*
@@ -235,10 +303,131 @@ function do_shortcode_tag( $m ) {
return $m[1] . call_user_func( $shortcode_tags[$tag], $attr, $m[5], $tag ) . $m[6];
} else {
// self-closing tag
return $m[1] . call_user_func( $shortcode_tags[$tag], $attr, NULL, $tag ) . $m[6];
return $m[1] . call_user_func( $shortcode_tags[$tag], $attr, null, $tag ) . $m[6];
}
}
/**
* 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.
* @return string Content with shortcodes filtered out.
*/
function do_shortcodes_in_html_tags( $content, $ignore_html ) {
// Normalize entities in unfiltered HTML before adding placeholders.
$trans = array( '&#91;' => '&#091;', '&#93;' => '&#093;' );
$content = strtr( $content, $trans );
$trans = array( '[' => '&#91;', ']' => '&#93;' );
$pattern = get_shortcode_regex();
$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/s", '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/s", '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/s", '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 ( '' !== $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( '&#91;' => '[', '&#93;' => ']' );
$content = strtr( $content, $trans );
return $content;
}
/**
* Retrieve all attributes from the shortcodes tag.
*
@@ -246,7 +435,7 @@ function do_shortcode_tag( $m ) {
* 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
* @since 2.5.0
*
* @param string $text
* @return array List of attributes and their value.
@@ -263,7 +452,7 @@ function shortcode_parse_atts($text) {
$atts[strtolower($m[3])] = stripcslashes($m[4]);
elseif (!empty($m[5]))
$atts[strtolower($m[5])] = stripcslashes($m[6]);
elseif (isset($m[7]) and strlen($m[7]))
elseif (isset($m[7]) && strlen($m[7]))
$atts[] = stripcslashes($m[7]);
elseif (isset($m[8]))
$atts[] = stripcslashes($m[8]);
@@ -284,13 +473,14 @@ function shortcode_parse_atts($text) {
* If the $atts list has unsupported attributes, then they will be ignored and
* removed from the final returned list.
*
* @since 2.5
* @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) {
function shortcode_atts( $pairs, $atts, $shortcode = '' ) {
$atts = (array)$atts;
$out = array();
foreach($pairs as $name => $default) {
@@ -299,13 +489,29 @@ function shortcode_atts($pairs, $atts) {
else
$out[$name] = $default;
}
/**
* Filter a shortcode's default 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
*
* @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.
*/
if ( $shortcode )
$out = apply_filters( "shortcode_atts_{$shortcode}", $out, $pairs, $atts );
return $out;
}
/**
* Remove all shortcode tags from the given content.
*
* @since 2.5
* @since 2.5.0
*
* @uses $shortcode_tags
*
* @param string $content Content to remove shortcode tags.
@@ -314,12 +520,22 @@ function shortcode_atts($pairs, $atts) {
function strip_shortcodes( $content ) {
global $shortcode_tags;
if ( false === strpos( $content, '[' ) ) {
return $content;
}
if (empty($shortcode_tags) || !is_array($shortcode_tags))
return $content;
$pattern = get_shortcode_regex();
$content = do_shortcodes_in_html_tags( $content, true );
return preg_replace_callback( "/$pattern/s", 'strip_shortcode_tag', $content );
$pattern = get_shortcode_regex();
$content = preg_replace_callback( "/$pattern/s", 'strip_shortcode_tag', $content );
// Always restore square braces so we don't break things like <!--[if IE ]>
$content = unescape_invalid_shortcodes( $content );
return $content;
}
function strip_shortcode_tag( $m ) {
@@ -330,7 +546,3 @@ function strip_shortcode_tag( $m ) {
return $m[1] . $m[6];
}
add_filter('the_content', 'do_shortcode', 11); // AFTER wpautop()
?>