Update plugin wp-syntax to 1.1

1 files changed, 520 insertions, 372 deletions

diff --git a/plugins/wp-syntax/wp-syntax.php b/plugins/wp-syntax/wp-syntax.php
index d3a95ffe..3778b9f4 100644
--- a/plugins/wp-syntax/wp-syntax.php
+++ b/plugins/wp-syntax/wp-syntax.php
@@ -1,372 +1,520 @@
-<?php
-/*
-Plugin Name: WP-Syntax
-Plugin URI: http://www.connections-pro.com
-Description: Syntax highlighting using <a href="http://qbnz.com/highlighter/">GeSHi</a> supporting a wide range of popular languages.
-Version: 1.0
-Author: Steven A. Zahm
-Author URI: http://www.connections-pro.com
-License: GPL2
-Text Domain: wp_syntax
-Domain Path: /lang
-
-Original Author: Ryan McGeary
-
-Copyright 2013  Steven A. Zahm  (email : helpdesk@connections-pro.com)
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License, version 2, as
-published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-/*
-@todo integrate TinyMCE button support using one of these as a base:
-	http://wordpress.org/extend/plugins/wp-syntax-integration/
-	http://wordpress.org/extend/plugins/wp-syntax-button/
-@todo Merge this add-on plugin functionality:  http://wordpress.org/extend/plugins/wp-syntax-download-extension/
-
-Look at these:	http://wordpress.org/extend/plugins/wp-synhighlight/
-				http://wordpress.org/extend/plugins/wp-codebox/
- */
-
-if ( ! class_exists( 'WP_Syntax' ) ) {
-
-	class WP_Syntax {
-
-		/**
-		* @var (object) WP_Syntax stores the instance of this class.
-		*/
-		private static $instance;
-
-		private static $token;
-
-		private static $matches;
-
-		/**
-		 * A dummy constructor to prevent WP_Syntax from being loaded more than once.
-		 *
-		 * @access private
-		 * @since 1.0
-		 * @see WP_Syntax::instance()
-		 * @see WP_Syntax();
-		 */
-		private function __construct() { /* Do nothing here */ }
-
-		/**
-		 * Main WP_Syntax Instance
-		 *
-		 * Insures that only one instance of WP_Syntax exists in memory at any one time.
-		 *
-		 * @access public
-		 * @since 1.0
-		 * @return object WP_Syntax
-		 */
-		public static function getInstance() {
-			if ( ! isset( self::$instance ) ) {
-				self::$instance = new self;
-				self::$instance->init();
-			}
-			return self::$instance;
-		}
-
-		/**
-		 * Initiate the plugin.
-		 *
-		 * @access private
-		 * @since 1.0
-		 * @return void
-		 */
-		private function init() {
-
-			self::defineConstants();
-			self::inludeDependencies();
-
-			self::$token = md5( uniqid( rand() ) );
-
-			self::$matches = array();
-
-			// Nothing to do during activation/deactivation yet...
-			// register_activation_hook( dirname(__FILE__) . '/wp-syntax.php', array( __CLASS__, 'activate' ) );
-			// register_deactivation_hook( dirname(__FILE__) . '/wp-syntax.php', array( __CLASS__, 'deactivate' ) );
-
-			// Nothing to translate presently.
-			// load_plugin_textdomain( 'wp_syntax' , false , WPS__DIR_NAME . 'lang' );
-
-			add_action( 'wp_enqueue_scripts', array( __CLASS__, 'enqueueScripts' ) );
-
-			// Update config for WYSIWYG editor to accept the pre tag and its attributes.
-			add_filter( 'tiny_mce_before_init', array( __CLASS__,'tinyMCEConfig') );
-
-			// We want to run before other filters; hence, a priority of 0 was chosen.
-			// The lower the number, the higher the priority.  10 is the default and
-			// several formatting filters run at or around 6.
-			add_filter( 'the_content', array( __CLASS__, 'beforeFilter' ), 0);
-			add_filter( 'the_excerpt', array( __CLASS__, 'beforeFilter' ), 0);
-			add_filter( 'comment_text', array( __CLASS__, 'beforeFilter' ), 0);
-
-			// We want to run after other filters; hence, a priority of 99.
-			add_filter( 'the_content', array( __CLASS__, 'afterFilter' ), 99);
-			add_filter( 'the_excerpt', array( __CLASS__, 'afterFilter' ), 99);
-			add_filter( 'comment_text', array( __CLASS__, 'afterFilter' ), 99);
-
-		}
-
-		/**
-		 * Define the constants.
-		 *
-		 * @access private
-		 * @since 1.0
-		 * @return void
-		 */
-		private static function defineConstants() {
-
-			define( 'WPS_VERSION', '1.0' );
-
-			define( 'WPS_DIR_NAME', plugin_basename( dirname( __FILE__ ) ) );
-			define( 'WPS_BASE_NAME', plugin_basename( __FILE__ ) );
-			define( 'WPS_BASE_PATH', plugin_dir_path( __FILE__ ) );
-			define( 'WPS_BASE_URL', plugin_dir_url( __FILE__ ) );
-
-		}
-
-		private static function inludeDependencies() {
-
-			include_once( 'geshi/geshi.php' );
-
-		}
-
-		/**
-		 * Called when activating  via the activation hook.
-		 *
-		 * @access private
-		 * @since 1.0
-		 * @return void
-		 */
-		public static function activate() {
-
-		}
-
-		/**
-		 * Called when deactivating via the deactivation hook.
-		 *
-		 * @access private
-		 * @since 1.0
-		 * @return void
-		 */
-		public static function deactivate() {
-
-		}
-
-		/**
-		 * Enqueue the CSS and JavaScripts.
-		 *
-		 * @access private
-		 * @since 1.0
-		 * @return void
-		 */
-		public static function enqueueScripts() {
-
-			// If a wp-syntax.css file exists in the theme folder use it instead.
-			$url = file_exists( STYLESHEETPATH . '/wp-syntax.css' ) ? get_bloginfo( 'stylesheet_directory' ) . '/wp-syntax.css' : WPS_BASE_URL . 'css/wp-syntax.css';
-
-			// Enqueue the CSS
-			wp_enqueue_style( 'wp-syntax-css', $url, array(), WPS_VERSION );
-
-			// Enqueue the JavaScript
-			// wp_enqueue_script( 'wp-syntax-js', WPS_BASE_URL . 'js/wp-syntax.js', array( 'jquery' ), WPS_VERSION, TRUE );
-
-		}
-
-		/**
-		 * Update the TinyMCE config to add support for the pre tag and its attributes.
-		 *
-		 * @access private
-		 * @since 0.9.13
-		 * @param  (array) $init The TinyMCE config.
-		 * @return (array)
-		 */
-		public static function tinyMCEConfig( $init ) {
-
-			$ext = 'pre[id|name|class|style|lang|line|escaped|highlight|src]';
-
-			if ( isset( $init['extended_valid_elements'] ) ) {
-				$init['extended_valid_elements'] .= "," . $ext;
-			} else {
-				$init['extended_valid_elements'] = $ext;
-			}
-
-			return $init;
-		}
-
-		// special ltrim b/c leading whitespace matters on 1st line of content
-		public static function trimCode( $code ) {
-			$code = preg_replace("/^\s*\n/siU", '', $code);
-			$code = rtrim ($code );
-			return $code;
-		}
-
-		public static function substituteToken( &$match ) {
-			// global $wp_syntax_token, $wp_syntax_matches;
-
-			$i = count( self::$matches );
-			self::$matches[ $i ] = $match;
-
-			return "\n\n<p>" . self::$token . sprintf( '%03d', $i ) . "</p>\n\n";
-		}
-
-		public static function lineNumbers( $code, $start ) {
-
-			$line_count = count( explode( "\n", $code ) );
-			$output = '<pre>';
-
-			for ( $i = 0; $i < $line_count; $i++ ) {
-				$output .= ( $start + $i ) . "\n";
-			}
-
-			$output .= '</pre>';
-
-			return $output;
-		}
-
-		public static function caption( $url ) {
-
-			$parsed = parse_url( $url );
-			$path = pathinfo( $parsed['path'] );
-			$caption = '';
-
-			if ( ! isset( $path['filename'] ) ) {
-				return;
-			}
-
-			if ( isset( $parsed['scheme'] ) ) {
-				$caption .= '<a href="' . $url . '">';
-			}
-
-			if ( isset( $parsed["host"] ) && $parsed["host"] == 'github.com' )
-			{
-				$caption .= substr( $parsed['path'], strpos( $parsed['path'], '/', 1 ) ); /* strip github.com username */
-			} else {
-				$caption .= $parsed['path'];
-			}
-
-			/* $caption . $path["filename"];
-			if (isset($path["extension"])) {
-				$caption .= "." . $path["extension"];
-			}*/
-
-			if ( isset($parsed['scheme']) ) {
-				$caption .= '</a>';
-			}
-
-			return $caption;
-		}
-
-		public static function highlight( $match ) {
-			// global $wp_syntax_matches;
-
-			$i = intval( $match[1] );
-			$match = self::$matches[ $i ];
-
-			$language = strtolower( trim( $match[1] ) );
-			$line = trim( $match[2] );
-			$escaped = trim( $match[3] );
-			$caption = self::caption( $match[5] );
-			$code = self::trimCode( $match[6] );
-
-			if ( $escaped == 'true' ) $code = htmlspecialchars_decode( $code );
-
-			$geshi = new GeSHi( $code, $language );
-			$geshi->enable_keyword_links( FALSE );
-
-			do_action_ref_array( 'wp_syntax_init_geshi', array( &$geshi ) );
-
-			if ( ! empty( $match[4] ) ) {
-
-				$linespecs = strpos( $match[4], ",") == FALSE ? array( $match[4] ) : explode( ',', $match[4] );
-				$lines = array();
-
-				foreach ( $linespecs as $spec ) {
-					$range = explode( '-', $spec );
-					$lines = array_merge( $lines, ( count( $range ) == 2) ? range( $range[0], $range[1]) : $range );
-				}
-
-				$geshi->highlight_lines_extra( $lines );
-			}
-
-			$output = "\n" . '<div class="wp_syntax">';
-			$output .= '<table>';
-
-			if ( ! empty( $caption ) ) {
-				$output .= '<caption>' . $caption . '</caption>';
-			}
-
-			$output .= '<tr>';
-
-			if ( $line ) {
-				$output .='<td class="line_numbers">' . self::lineNumbers( $code, $line ) . '</td>';
-			}
-
-			$output .= '<td class="code">';
-			$output .= $geshi->parse_code();
-			$output .= '</td></tr></table>';
-			$output .= '</div>' . "\n";
-
-			return $output;
-		}
-
-		public static function beforeFilter( $content ) {
-
-			return preg_replace_callback(
-				"/\s*<pre(?:lang=[\"']([\w-]+)[\"']|line=[\"'](\d*)[\"']|escaped=[\"'](true|false)?[\"']|highlight=[\"']((?:\d+[,-])*\d+)[\"']|src=[\"']([^\"']+)[\"']|\s)+>(.*)<\/pre>\s*/siU",
-				array( __CLASS__, 'substituteToken' ),
-				$content
-			);
-
-		}
-
-		public static function afterFilter( $content ) {
-			// global $wp_syntax_token;
-
-			 $content = preg_replace_callback(
-				 '/<p>\s*' . self::$token . '(\d{3})\s*<\/p>/si',
-				 array( __CLASS__, 'highlight' ),
-				 $content
-			 );
-
-			return $content;
-		}
-
-	}
-
-	/**
-	 * The main function responsible for returning the WP_Syntax instance
-	 * to functions everywhere.
-	 *
-	 * Use this function like you would a global variable, except without needing
-	 * to declare the global.
-	 *
-	 * Example: <?php $wp_syntex = WP_Syntax(); ?>
-	 *
-	 * @access public
-	 * @since 1.0
-	 * @return mixed (object)
-	 */
-	function WP_Syntax() {
-		return WP_Syntax::getInstance();
-	}
-
-	/**
-	 * Start the plugin.
-	 */
-	add_action( 'plugins_loaded', 'WP_Syntax' );
-
-}
\ No newline at end of file
+<?php

+/*

+Plugin Name: WP-Syntax

+Plugin URI: http://www.connections-pro.com

+Description: Syntax highlighting using <a href="http://qbnz.com/highlighter/">GeSHi</a> supporting a wide range of popular languages.

+Version: 1.1

+Author: Steven A. Zahm

+Author URI: http://www.connections-pro.com

+License: GPL2

+Text Domain: wp_syntax

+Domain Path: /lang

+

+Original Author: Ryan McGeary

+

+Copyright 2013  Steven A. Zahm  (email : helpdesk@connections-pro.com)

+

+This program is free software; you can redistribute it and/or modify

+it under the terms of the GNU General Public License, version 2, as

+published by the Free Software Foundation.

+

+This program is distributed in the hope that it will be useful,

+but WITHOUT ANY WARRANTY; without even the implied warranty of

+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

+GNU General Public License for more details.

+

+You should have received a copy of the GNU General Public License

+along with this program; if not, write to the Free Software

+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

+*/

+

+/*

+@todo integrate TinyMCE button support using one of these as a base:

+	http://wordpress.org/extend/plugins/wp-syntax-integration/

+	http://wordpress.org/extend/plugins/wp-syntax-button/

+@todo Merge this add-on plugin functionality:  http://wordpress.org/extend/plugins/wp-syntax-download-extension/

+

+Look at these:	http://wordpress.org/extend/plugins/wp-synhighlight/

+				http://wordpress.org/extend/plugins/wp-codebox/

+ */

+

+if ( ! class_exists( 'WP_Syntax' ) ) {

+

+	class WP_Syntax {

+

+		/**

+		 * @var  WP_Syntax stores the instance of this class.

+		 */

+		private static $instance;

+

+		private static $token;

+

+		private static $matches;

+

+		// Used for caching

+		private static $cache = array();

+		private static $cache_generate = false;

+		private static $cache_match_num = 0;

+

+		/**

+		 * A dummy constructor to prevent WP_Syntax from being loaded more than once.

+		 *

+		 * @access private

+		 * @since 1.0

+		 * @see WP_Syntax::instance()

+		 * @see WP_Syntax();

+		 */

+		private function __construct() { /* Do nothing here */ }

+

+		/**

+		 * Main WP_Syntax Instance

+		 *

+		 * Insures that only one instance of WP_Syntax exists in memory at any one time.

+		 *

+		 * @access public

+		 * @since  1.0

+		 *

+		 * @return WP_Syntax

+		 */

+		public static function getInstance() {

+			if ( ! isset( self::$instance ) ) {

+				self::$instance = new self;

+				self::$instance->init();

+			}

+			return self::$instance;

+		}

+

+		/**

+		 * Initiate the plugin.

+		 *

+		 * @access private

+		 * @since 1.0

+		 * @return void

+		 */

+		private function init() {

+

+			self::defineConstants();

+			self::inludeDependencies();

+

+			self::$token = md5( uniqid( rand() ) );

+

+			self::$matches = array();

+

+			// Nothing to do during activation/deactivation yet...

+			// register_activation_hook( dirname(__FILE__) . '/wp-syntax.php', array( __CLASS__, 'activate' ) );

+			// register_deactivation_hook( dirname(__FILE__) . '/wp-syntax.php', array( __CLASS__, 'deactivate' ) );

+

+			// Nothing to translate presently.

+			// load_plugin_textdomain( 'wp_syntax' , false , WPS__DIR_NAME . 'lang' );

+

+			//Invalidate cache whenever new/updated posts/comments are made

+			add_action( 'save_post', array( __CLASS__, 'invalidatePostCache' ) );

+			add_action( 'comment_post', array( __CLASS__, 'invalidateCommentCache' ) );

+			add_action( 'edit_comment', array( __CLASS__, 'invalidateCommentCache' ) );

+

+			add_action( 'wp_enqueue_scripts', array( __CLASS__, 'enqueueScripts' ) );

+

+			// Update config for WYSIWYG editor to accept the pre tag and its attributes.

+			add_filter( 'tiny_mce_before_init', array( __CLASS__,'tinyMCEConfig') );

+

+			// We want to run before other filters; hence, a priority of 0 was chosen.

+			// The lower the number, the higher the priority.  10 is the default and

+			// several formatting filters run at or around 6.

+			add_filter( 'the_content', array( __CLASS__, 'beforeFilter' ), 0 );

+			add_filter( 'the_excerpt', array( __CLASS__, 'beforeFilter' ), 0 );

+			add_filter( 'comment_text', array( __CLASS__, 'beforeFilter' ), 0 );

+

+			// We want to run after other filters; hence, a priority of 99.

+			add_filter( 'the_content', array( __CLASS__, 'afterFilterContent' ), 99 );

+			add_filter( 'the_excerpt', array( __CLASS__, 'afterFilterExcerpt' ), 99 );

+			add_filter( 'comment_text', array( __CLASS__, 'afterFilterComment' ), 99 );

+		}

+

+		/**

+		 * Define the constants.

+		 *

+		 * @access private

+		 * @since 1.0

+		 * @return void

+		 */

+		private static function defineConstants() {

+

+			define( 'WPS_VERSION', '1.1' );

+

+			define( 'WPS_DIR_NAME', plugin_basename( dirname( __FILE__ ) ) );

+			define( 'WPS_BASE_NAME', plugin_basename( __FILE__ ) );

+			define( 'WPS_BASE_PATH', plugin_dir_path( __FILE__ ) );

+			define( 'WPS_BASE_URL', plugin_dir_url( __FILE__ ) );

+

+		}

+

+		public static function invalidatePostCache( $post_id ) {

+

+			delete_post_meta( $post_id, 'wp-syntax-cache-content' );

+			delete_post_meta( $post_id, 'wp-syntax-cache-excerpt' );

+		}

+

+		public static function invalidateCommentCache( $comment_id ) {

+

+			delete_comment_meta( $comment_id, 'wp-syntax-cache-comment' );

+		}

+

+		private static function inludeDependencies() {

+

+			include_once( 'geshi/geshi.php' );

+

+		}

+

+		/**

+		 * Called when activating  via the activation hook.

+		 *

+		 * @access private

+		 * @since 1.0

+		 * @return void

+		 */

+		public static function activate() {

+

+		}

+

+		/**

+		 * Called when deactivating via the deactivation hook.

+		 *

+		 * @access private

+		 * @since 1.0

+		 * @return void

+		 */

+		public static function deactivate() {

+

+		}

+

+		/**

+		 * Enqueue the CSS and JavaScripts.

+		 *

+		 * @access private

+		 * @since 1.0

+		 * @return void

+		 */

+		public static function enqueueScripts() {

+

+			// If a wp-syntax.css file exists in the theme folder use it instead.

+			$url = file_exists( STYLESHEETPATH . '/wp-syntax.css' ) ? get_bloginfo( 'stylesheet_directory' ) . '/wp-syntax.css' : WPS_BASE_URL . 'css/wp-syntax.css';

+

+			// Enqueue the CSS

+			wp_enqueue_style( 'wp-syntax-css', $url, array(), WPS_VERSION );

+

+			// Enqueue the Adobe Source Code Pro font

+			//wp_enqueue_style( 'source-code-font', 'http://fonts.googleapis.com/css?family=Source+Code+Pro');

+

+			// Enqueue the JavaScript

+			wp_enqueue_script( 'wp-syntax-js', WPS_BASE_URL . 'js/wp-syntax.js', array( 'jquery' ), WPS_VERSION, TRUE );

+

+		}

+

+		/**

+		 * Update the TinyMCE config to add support for the pre tag and its attributes.

+		 *

+		 * @access private

+		 * @since 0.9.13

+		 * @param  array $init The TinyMCE config.

+		 * @return array

+		 */

+		public static function tinyMCEConfig( $init ) {

+

+			$ext = 'pre[id|name|class|style|lang|line|escaped|highlight|src]';

+

+			if ( isset( $init['extended_valid_elements'] ) ) {

+				$init['extended_valid_elements'] .= "," . $ext;

+			} else {

+				$init['extended_valid_elements'] = $ext;

+			}

+

+			return $init;

+		}

+

+		// special ltrim b/c leading whitespace matters on 1st line of content

+		public static function trimCode( $code ) {

+			$code = preg_replace("/^\s*\n/siU", '', $code);

+			$code = rtrim ($code );

+			return $code;

+		}

+

+		public static function substituteToken( &$match ) {

+			// global $wp_syntax_token, $wp_syntax_matches;

+

+			$i = count( self::$matches );

+			self::$matches[ $i ] = $match;

+

+			return "\n\n<p>" . self::$token . sprintf( '%03d', $i ) . "</p>\n\n";

+		}

+

+		public static function lineNumbers( $code, $start ) {

+

+			$line_count = count( explode( "\n", $code ) );

+			$output = '<pre>';

+

+			for ( $i = 0; $i < $line_count; $i++ ) {

+				$output .= ( $start + $i ) . "\n";

+			}

+

+			$output .= '</pre>';

+

+			return $output;

+		}

+

+		public static function caption( $url ) {

+

+			$parsed = parse_url( $url );

+			$path = pathinfo( $parsed['path'] );

+			$caption = '';

+

+			if ( ! isset( $path['filename'] ) ) {

+				return '';

+			}

+

+			if ( isset( $parsed['scheme'] ) ) {

+				$caption .= '<a href="' . $url . '">';

+			}

+

+			if ( isset( $parsed["host"] ) && $parsed["host"] == 'github.com' )

+			{

+				$caption .= substr( $parsed['path'], strpos( $parsed['path'], '/', 1 ) ); /* strip github.com username */

+			} else {

+				$caption .= $parsed['path'];

+			}

+

+			/* $caption . $path["filename"];

+			if (isset($path["extension"])) {

+				$caption .= "." . $path["extension"];

+			}*/

+

+			if ( isset($parsed['scheme']) ) {

+				$caption .= '</a>';

+			}

+

+			return $caption;

+		}

+

+		public static function highlight( $match ) {

+			// global $wp_syntax_matches;

+

+			// Keep track of which <pre> tag we're up to

+			self::$cache_match_num++;

+

+			// Do we have cache? Serve it!

+			if ( isset( self::$cache[ self::$cache_match_num ] ) ) {

+				return self::$cache[ self::$cache_match_num ];

+			}

+

+			$i = intval( $match[1] );

+			$match = self::$matches[ $i ];

+

+			$language = strtolower( trim( $match[1] ) );

+			$line = trim( $match[2] );

+			$escaped = trim( $match[3] );

+			$caption = self::caption( $match[5] );

+			$code = self::trimCode( $match[6] );

+

+			if ( $escaped == 'true' ) $code = htmlspecialchars_decode( $code );

+

+			$geshi = new GeSHi( $code, $language );

+			$geshi->enable_keyword_links( FALSE );

+

+			do_action_ref_array( 'wp_syntax_init_geshi', array( &$geshi ) );

+

+			if ( ! empty( $match[4] ) ) {

+

+				$linespecs = strpos( $match[4], ",") == FALSE ? array( $match[4] ) : explode( ',', $match[4] );

+				$lines = array();

+

+				foreach ( $linespecs as $spec ) {

+					$range = explode( '-', $spec );

+					$lines = array_merge( $lines, ( count( $range ) == 2) ? range( $range[0], $range[1]) : $range );

+				}

+

+				$geshi->highlight_lines_extra( $lines );

+			}

+

+			$output = "\n" . '<div class="wp_syntax" style="position:relative;">';

+			$output .= '<table>';

+

+			if ( ! empty( $caption ) ) {

+				$output .= '<caption>' . $caption . '</caption>';

+			}

+

+			$output .= '<tr>';

+

+			if ( $line ) {

+				$output .='<td class="line_numbers">' . self::lineNumbers( $code, $line ) . '</td>';

+			}

+

+			$output .= '<td class="code">';

+			$output .= $geshi->parse_code();

+			$output .= '</td></tr></table>';

+			$output .= '<p class="theCode" style="display:none;">'.htmlspecialchars($code).'</p>';

+			$output .= '</div>' . "\n";

+

+			if ( self::$cache_generate ) {

+				self::$cache[ self::$cache_match_num ] = $output;

+			}

+

+			return $output;

+		}

+

+		/**

+		 * @param string $content

+		 *

+		 * @return string

+		 */

+		public static function beforeFilter( $content ) {

+

+			/*

+			 * Run this only after the page head has been rendered.

+			 * This is to make it compatible with Yoast SEO. Unfortunately if this filter is run any sooner, any shortcodes

+			 * which may exist in the post/page content is stripped by Yoast SEO so when code blocks are cached, they will be

+			 * cached without the shortcodes in the code blocks. Other than this it seems to work correctly.

+			 *

+			 * NOTE: Yoast seems to do this as part of rendering the opengraph in the page head.

+			 */

+			if ( did_action( 'wp_print_scripts' ) ) {

+

+				return preg_replace_callback(

+					"/\s*<pre(?:lang=[\"']([\w-]+)[\"']|line=[\"'](\d*)[\"']|escaped=[\"'](true|false)?[\"']|highlight=[\"']((?:\d+[,-])*\d+)[\"']|src=[\"']([^\"']+)[\"']|\s)+>(.*)<\/pre>\s*/siU",

+					array( __CLASS__, 'substituteToken' ),

+					$content

+				);

+			}

+

+			return $content;

+		}

+

+		public static function afterFilterContent( $content ) {

+

+			global $post;

+

+			$the_post    = $post;

+			$the_post_id = $post->ID;

+

+			//Reset cache settings on each filter - we might be showing

+			//multiple posts on the one page

+			self::$cache           = array();

+			self::$cache_match_num = 0;

+			self::$cache_generate  = FALSE;

+

+			if ( is_object( $the_post ) ) {

+				self::$cache = get_post_meta( $the_post_id, 'wp-syntax-cache-content', TRUE );

+

+				if ( ! self::$cache ) {

+					//Make sure self::$cache is an array

+					self::$cache = array();

+					//Inform the highlight() method that we're regenning

+					self::$cache_generate = TRUE;

+				}

+			}

+

+			$content = self::afterFilter( $content );

+

+			//Update cache if we're generating and were there <pre> tags generated

+			if ( is_object( $the_post ) && self::$cache_generate && self::$cache ) {

+				update_post_meta( $the_post_id, 'wp-syntax-cache-content', wp_slash( self::$cache ) );

+			}

+

+			return $content;

+		}

+

+		public static function afterFilterExcerpt( $content ) {

+

+			global $post;

+			$the_post    = $post;

+			$the_post_id = $post->ID;

+

+			//Reset cache settings on each filter - we might be showing

+			//multiple posts on the one page

+			self::$cache           = array();

+			self::$cache_match_num = 0;

+			self::$cache_generate  = FALSE;

+

+			if ( is_object( $the_post ) ) {

+				self::$cache = get_post_meta( $the_post_id, 'wp-syntax-cache-excerpt', TRUE );

+

+				if ( ! self::$cache ) {

+					//Make sure self::$cache is an array

+					self::$cache = array();

+					//Inform the highlight() method that we're regenning

+					self::$cache_generate = TRUE;

+				}

+			}

+

+			$content = self::afterFilter( $content );

+

+			//Update cache if we're generating and were there <pre> tags generated

+			if ( is_object( $the_post ) && self::$cache_generate && self::$cache ) {

+				update_post_meta( $the_post_id, 'wp-syntax-cache-excerpt', self::$cache );

+			}

+

+			return $content;

+		}

+

+		public static function afterFilterComment( $content ) {

+

+			global $comment;

+			$the_post    = $comment;

+			$the_post_id = $comment->comment_ID;

+

+			if ( is_object( $the_post ) ) {

+				self::$cache = get_comment_meta( $the_post_id, 'wp-syntax-cache-comment', TRUE );

+

+				if ( ! self::$cache ) {

+					//Make sure self::$cache is an array

+					self::$cache = array();

+					//Inform the highlight() method that we're regenning

+					self::$cache_generate = TRUE;

+				}

+			}

+

+			$content = self::afterFilter( $content );

+

+			//Update cache if we're generating and were there <pre> tags generated

+			if ( is_object( $the_post ) && self::$cache_generate && self::$cache ) {

+				update_comment_meta( $the_post_id, 'wp-syntax-cache-comment', self::$cache );

+			}

+

+			return $content;

+		}

+

+		public static function afterFilter( $content ) {

+			// global $wp_syntax_token;

+

+			$content = preg_replace_callback(

+				'/<p>\s*' . self::$token . '(\d{3})\s*<\/p>/si',

+				array( __CLASS__, 'highlight' ),

+				$content

+			);

+

+			return $content;

+		}

+

+	}

+

+	/**

+	 * The main function responsible for returning the WP_Syntax instance

+	 * to functions everywhere.

+	 *

+	 * Use this function like you would a global variable, except without needing

+	 * to declare the global.

+	 *

+	 * Example: <?php $wp_syntex = WP_Syntax(); ?>

+	 *

+	 * @access public

+	 * @since 1.0

+	 * @return WP_Syntax

+	 */

+	function WP_Syntax() {

+		return WP_Syntax::getInstance();

+	}

+

+	/**

+	 * Start the plugin.

+	 */

+	add_action( 'plugins_loaded', 'WP_Syntax' );

+

+}