WordPress 4.1.1-scripts

[autoinstalls/wordpress.git] / wp-includes / shortcodes.php

diff --git a/wp-includes/shortcodes.php b/wp-includes/shortcodes.php
index f2048bda63eeeeb208094eb57951c54ee73cb4db..99eec774dcd8ecd677577499516ea0025a40956e 100644 (file)
--- a/wp-includes/shortcodes.php
+++ b/wp-includes/shortcodes.php
@@ -21,21 +21,20 @@
  *
  * To apply shortcode tags to content:
  *
  *
  * To apply shortcode tags to content:
  *

- * <code>
- * $out = do_shortcode($content);
- * </code>
+ *     $out = do_shortcode( $content );

  *
  * @link http://codex.wordpress.org/Shortcode_API
  *
  * @package WordPress
  * @subpackage Shortcodes
  *
  * @link http://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
  *
  */
 
 /**
  * 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
  * @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:
  *
  *
  * 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:
  *
  *
  * 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:
  *
  *
  * 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.
  * @uses $shortcode_tags
  *
  * @param string $tag Shortcode tag to be searched in post content.


@@ -100,7 +96,8 @@ function add_shortcode($tag, $func) {
 /**
  * Removes hook for shortcode.
  *
 /**
  * Removes hook for shortcode.
  *

- * @since 2.5
+ * @since 2.5.0
+ *

  * @uses $shortcode_tags
  *
  * @param string $tag shortcode tag to remove hook for.
  * @uses $shortcode_tags
  *
  * @param string $tag shortcode tag to remove hook for.


@@ -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.
  *
  * 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() {
  * @uses $shortcode_tags
  */
 function remove_all_shortcodes() {


@@ -127,6 +125,50 @@ function remove_all_shortcodes() {
        $shortcode_tags = array();
 }
 
        $shortcode_tags = array();
 }
 

+/**
+ * Whether a registered shortcode exists named $tag
+ *
+ * @since 3.6.0
+ *
+ * @global array $shortcode_tags
+ * @param string $tag
+ * @return boolean
+ */
+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 $tag
+ * @return boolean
+ */
+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.
  *
 /**
  * Search content for shortcodes and filter shortcodes through their hooks.
  *


@@ -134,9 +176,9 @@ 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.
  *
  * 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
+ * @since 2.5.0
+ *

  * @uses $shortcode_tags
  * @uses $shortcode_tags

- * @uses get_shortcode_regex() Gets the search pattern for searching shortcodes.

  *
  * @param string $content Content to search for shortcodes
  * @return string Content with shortcodes filtered out.
  *
  * @param string $content Content to search for shortcodes
  * @return string Content with shortcodes filtered out.


@@ -144,11 +186,15 @@ function remove_all_shortcodes() {
 function do_shortcode($content) {
        global $shortcode_tags;
 
 function do_shortcode($content) {
        global $shortcode_tags;
 

+       if ( false === strpos( $content, '[' ) ) {
+               return $content;
+       }
+

        if (empty($shortcode_tags) || !is_array($shortcode_tags))
                return $content;
 
        $pattern = get_shortcode_regex();
        if (empty($shortcode_tags) || !is_array($shortcode_tags))
                return $content;
 
        $pattern = get_shortcode_regex();

-       return preg_replace_callback('/'.$pattern.'/s', 'do_shortcode_tag', $content);
+       return preg_replace_callback( "/$pattern/s", 'do_shortcode_tag', $content );

 }
 
 /**
 }
 
 /**


@@ -157,15 +203,17 @@ function do_shortcode($content) {
  * The regular expression combines the shortcode tags in the regular expression
  * in a regex class.
  *
  * The regular expression combines the shortcode tags in the regular expression
  * in a regex class.
  *

- * The regular expresion contains 6 different sub matches to help with parsing.
+ * The regular expression contains 6 different sub matches to help with parsing.

  *
  *

- * 1/6 - An extra [ or ] to allow for escaping shortcodes with double [[]]
+ * 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.
  * 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 2.5

  * @uses $shortcode_tags
  *
  * @return string The shortcode search regular expression
  * @uses $shortcode_tags
  *
  * @return string The shortcode search regular expression


@@ -175,15 +223,44 @@ function get_shortcode_regex() {
        $tagnames = array_keys($shortcode_tags);
        $tagregexp = join( '|', array_map('preg_quote', $tagnames) );
 
        $tagnames = array_keys($shortcode_tags);
        $tagregexp = join( '|', array_map('preg_quote', $tagnames) );
 

-       // WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcodes()
-       return '(.?)\[('.$tagregexp.')\b(.*?)(?:(\/))?\](?:(.+?)\[\/\2\])?(.?)';
+       // 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
+               . '(?![\\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]]

 }
 
 /**
  * Regular Expression callable for do_shortcode() for calling shortcode hook.
  * @see get_shortcode_regex for details of the match array contents.
  *
 }
 
 /**
  * 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
  *
  * @access private
  * @uses $shortcode_tags
  *


@@ -206,7 +283,7 @@ 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, $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];

        }
 }
 
        }
 }
 


@@ -217,7 +294,7 @@ 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.
  *
  * 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.
  *
  * @param string $text
  * @return array List of attributes and their value.


@@ -255,13 +332,14 @@ function shortcode_parse_atts($text) {
  * If the $atts list has unsupported attributes, then they will be ignored and
  * removed from the final returned list.
  *
  * 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 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.
  */
  * @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) {
        $atts = (array)$atts;
        $out = array();
        foreach($pairs as $name => $default) {


@@ -270,13 +348,29 @@ function shortcode_atts($pairs, $atts) {
                else
                        $out[$name] = $default;
        }
                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.
  *
        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.
  * @uses $shortcode_tags
  *
  * @param string $content Content to remove shortcode tags.


@@ -285,14 +379,25 @@ function shortcode_atts($pairs, $atts) {
 function strip_shortcodes( $content ) {
        global $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;
 
        $pattern = get_shortcode_regex();
 
        if (empty($shortcode_tags) || !is_array($shortcode_tags))
                return $content;
 
        $pattern = get_shortcode_regex();
 

-       return preg_replace('/'.$pattern.'/s', '$1$6', $content);
+       return preg_replace_callback( "/$pattern/s", 'strip_shortcode_tag', $content );

 }
 
 }
 

-add_filter('the_content', 'do_shortcode', 11); // AFTER wpautop()
+function strip_shortcode_tag( $m ) {
+       // allow [[foo]] syntax for escaping a tag
+       if ( $m[1] == '[' && $m[6] == ']' ) {
+               return substr($m[0], 1, -1);
+       }

 
 

-?>
\ No newline at end of file
+       return $m[1] . $m[6];
+}
+
+add_filter('the_content', 'do_shortcode', 11); // AFTER wpautop()