diff options
Diffstat (limited to 'plugins/wp-syntax/wp-syntax.php')
| -rw-r--r-- | plugins/wp-syntax/wp-syntax.php | 892 |
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' );
+
+}
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