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syntaxhighlighter.php
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<?php /*
**************************************************************************
Plugin Name: SyntaxHighlighter Evolved
Plugin URI: https://alex.blog/wordpress-plugins/syntaxhighlighter/
Version: 3.7.2
Description: Easily post syntax-highlighted code to your site without having to modify the code at all. Uses Alex Gorbatchev's <a href="http://alexgorbatchev.com/SyntaxHighlighter/">SyntaxHighlighter</a>. Includes a new editor block.
Author: Alex Mills (Viper007Bond)
Author URI: https://alex.blog/
Text Domain: syntaxhighlighter
License: GPL2+
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Requires at least: 5.7
Tested up to: 6.7
Requires PHP: 7.0
**************************************************************************/
class SyntaxHighlighter {
// All of these variables are private. Filters are provided for things that can be modified.
public $pluginver = '3.7.2'; // Plugin version
public $agshver = false; // Alex Gorbatchev's SyntaxHighlighter version (dynamically set below due to v2 vs v3)
public $shfolder = false; // Controls what subfolder to load SyntaxHighlighter from (v2 or v3)
public $settings = array(); // Contains the user's settings
public $defaultsettings = array(); // Contains the default settings
public $brushes = array(); // Array of aliases => brushes
public $shortcodes = array(); // Array of shortcodes to use
public $themes = array(); // Array of themes
public $usedbrushes = array(); // Stores used brushes so we know what to output
public $encoded = false; // Used to mark that a character encode took place
public $codeformat = false; // If set, SyntaxHighlighter::get_code_format() will return this value
public $content_save_pre_ran = false; // It's possible for the "content_save_pre" filter to run multiple times, so keep track
public $brush_names = array(); // Array of brush names for use.
public $specialchars = array(); // Array of special characters to be encoded.
function __construct() {
if ( ! function_exists( 'do_shortcodes_in_html_tags' ) )
return;
// Load localization domain
load_plugin_textdomain( 'syntaxhighlighter' );
// Display hooks
add_filter( 'the_content', array( $this, 'parse_shortcodes' ), 7 ); // Posts
add_filter( 'comment_text', array( $this, 'parse_shortcodes_comment' ), 7 ); // Comments
add_filter( 'bp_get_the_topic_post_content', array( $this, 'parse_shortcodes' ), 7 ); // BuddyPress
// Into the database
add_filter( 'content_save_pre', array( $this, 'encode_shortcode_contents_slashed_noquickedit' ), 1 ); // Posts
add_filter( 'pre_comment_content', array( $this, 'encode_shortcode_contents_slashed' ), 1 ); // Comments
add_filter( 'group_forum_post_text_before_save', array( $this, 'encode_shortcode_contents_slashed' ), 1 ); // BuddyPress
add_filter( 'group_forum_topic_text_before_save', array( $this, 'encode_shortcode_contents_slashed' ), 1 ); // BuddyPress
// Out of the database for editing
add_filter( 'the_editor_content', array( $this, 'the_editor_content' ), 1 ); // Posts
add_filter( 'comment_edit_pre', array( $this, 'decode_shortcode_contents' ), 1 ); // Comments
add_filter( 'bp_get_the_topic_text', array( $this, 'decode_shortcode_contents' ), 1 ); // BuddyPress
add_filter( 'bp_get_the_topic_post_edit_text', array( $this, 'decode_shortcode_contents' ), 1 ); // BuddyPress
// Outputting SyntaxHighlighter's JS and CSS
add_action( 'wp_footer', array( $this, 'maybe_output_scripts' ), 15 );
add_action( 'admin_footer', array( $this, 'maybe_output_scripts' ), 15 ); // For comments
// Admin hooks
add_action( 'admin_init', array( $this, 'register_setting' ) );
add_action( 'admin_menu', array( $this, 'register_settings_page' ) );
add_filter( 'mce_external_plugins', array( $this, 'add_tinymce_plugin' ) );
add_filter( 'save_post', array( $this, 'mark_as_encoded' ), 10, 2 );
add_filter( 'plugin_action_links', array( $this, 'settings_link' ), 10, 2 );
// Editor Blocks
if (
function_exists( 'parse_blocks' ) // WordPress 5.0+
|| function_exists( 'the_gutenberg_project' ) // Gutenberg plugin for older WordPress
) {
add_action( 'enqueue_block_editor_assets', array( $this, 'enqueue_block_editor_assets' ) );
add_action( 'the_content', array( $this, 'enable_brushes_used_in_blocks' ), 0 );
register_block_type(
'syntaxhighlighter/code',
array(
'render_callback' => array( $this, 'render_block' ),
)
);
}
// Register widget hooks
add_filter( 'widget_text', array( $this, 'widget_text_output' ), 7, 2 );
add_filter( 'widget_update_callback', array( $this, 'widget_text_save' ), 1, 4 );
add_filter( 'widget_form_callback', array( $this, 'widget_text_form' ), 1, 2 );
// Create array of default settings (you can use the filter to modify these)
$this->defaultsettings = (array) apply_filters( 'syntaxhighlighter_defaultsettings', array(
'theme' => 'default',
'loadallbrushes' => 0,
'shversion' => 3,
'title' => '',
'autolinks' => 1,
'classname' => '',
'collapse' => 0,
'firstline' => 1,
'gutter' => 1,
'htmlscript' => 0,
'light' => 0,
'padlinenumbers' => 'false',
'smarttabs' => 1,
'tabsize' => 4,
'toolbar' => 0,
'wraplines' => 1, // 2.x only
'quickcode' => 1, // 3.x only
) );
// Create the settings array by merging the user's settings and the defaults
$usersettings = (array) get_option('syntaxhighlighter_settings');
$this->settings = wp_parse_args( $usersettings, $this->defaultsettings );
// Dynamically set folder and version names for SynaxHighlighter
if ( 2 == $this->settings['shversion'] ) {
$this->shfolder = 'syntaxhighlighter2';
$this->agshver = '2.1.364';
} else {
$this->shfolder = 'syntaxhighlighter3';
$this->agshver = '3.0.9b';
}
// phpcs:disable Generic.Functions.FunctionCallArgumentSpacing.TooMuchSpaceAfterComma, PEAR.Functions.FunctionCallSignature.SpaceBeforeCloseBracket
// Register brush scripts
wp_register_script( 'syntaxhighlighter-core', plugins_url( $this->shfolder . '/scripts/shCore.js', __FILE__ ), array(), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-as3', plugins_url( $this->shfolder . '/scripts/shBrushAS3.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-arduino', plugins_url( $this->shfolder . '/scripts/shBrushArduino.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-bash', plugins_url( $this->shfolder . '/scripts/shBrushBash.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-coldfusion', plugins_url( $this->shfolder . '/scripts/shBrushColdFusion.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-cpp', plugins_url( $this->shfolder . '/scripts/shBrushCpp.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-csharp', plugins_url( $this->shfolder . '/scripts/shBrushCSharp.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-css', plugins_url( $this->shfolder . '/scripts/shBrushCss.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-delphi', plugins_url( $this->shfolder . '/scripts/shBrushDelphi.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-diff', plugins_url( $this->shfolder . '/scripts/shBrushDiff.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-erlang', plugins_url( $this->shfolder . '/scripts/shBrushErlang.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-go', plugins_url( $this->shfolder . '/scripts/shBrushGo.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-groovy', plugins_url( $this->shfolder . '/scripts/shBrushGroovy.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-haskell', plugins_url( $this->shfolder . '/scripts/shBrushHaskell.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-java', plugins_url( $this->shfolder . '/scripts/shBrushJava.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-javafx', plugins_url( $this->shfolder . '/scripts/shBrushJavaFX.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-jscript', plugins_url( $this->shfolder . '/scripts/shBrushJScript.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-perl', plugins_url( $this->shfolder . '/scripts/shBrushPerl.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-php', plugins_url( $this->shfolder . '/scripts/shBrushPhp.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-plain', plugins_url( $this->shfolder . '/scripts/shBrushPlain.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-powershell', plugins_url( $this->shfolder . '/scripts/shBrushPowerShell.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-python', plugins_url( $this->shfolder . '/scripts/shBrushPython.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-ruby', plugins_url( $this->shfolder . '/scripts/shBrushRuby.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-scala', plugins_url( $this->shfolder . '/scripts/shBrushScala.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-sql', plugins_url( $this->shfolder . '/scripts/shBrushSql.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-swift', plugins_url( $this->shfolder . '/scripts/shBrushSwift.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-vb', plugins_url( $this->shfolder . '/scripts/shBrushVb.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-xml', plugins_url( $this->shfolder . '/scripts/shBrushXml.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_script( 'syntaxhighlighter-brush-yaml', plugins_url( $this->shfolder . '/scripts/shBrushYaml.js', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
// Register some popular third-party brushes
wp_register_script( 'syntaxhighlighter-brush-clojure', plugins_url( 'third-party-brushes/shBrushClojure.js', __FILE__ ), array( 'syntaxhighlighter-core' ), '20090602' );
wp_register_script( 'syntaxhighlighter-brush-fsharp', plugins_url( 'third-party-brushes/shBrushFSharp.js', __FILE__ ), array( 'syntaxhighlighter-core' ), '20091003' );
wp_register_script( 'syntaxhighlighter-brush-latex', plugins_url( 'third-party-brushes/shBrushLatex.js', __FILE__ ), array( 'syntaxhighlighter-core' ), '20090613' );
wp_register_script( 'syntaxhighlighter-brush-matlabkey', plugins_url( 'third-party-brushes/shBrushMatlabKey.js', __FILE__ ), array( 'syntaxhighlighter-core' ), '20091209' );
wp_register_script( 'syntaxhighlighter-brush-objc', plugins_url( 'third-party-brushes/shBrushObjC.js', __FILE__ ), array( 'syntaxhighlighter-core' ), '20091207' );
wp_register_script( 'syntaxhighlighter-brush-r', plugins_url( 'third-party-brushes/shBrushR.js', __FILE__ ), array( 'syntaxhighlighter-core' ), '20100919' );
// Register theme stylesheets
wp_register_style( 'syntaxhighlighter-core', plugins_url( $this->shfolder . '/styles/shCore.css', __FILE__ ), array(), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-default', plugins_url( $this->shfolder . '/styles/shThemeDefault.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-django', plugins_url( $this->shfolder . '/styles/shThemeDjango.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-eclipse', plugins_url( $this->shfolder . '/styles/shThemeEclipse.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-emacs', plugins_url( $this->shfolder . '/styles/shThemeEmacs.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-fadetogrey', plugins_url( $this->shfolder . '/styles/shThemeFadeToGrey.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-midnight', plugins_url( $this->shfolder . '/styles/shThemeMidnight.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
wp_register_style( 'syntaxhighlighter-theme-rdark', plugins_url( $this->shfolder . '/styles/shThemeRDark.css', __FILE__ ), array( 'syntaxhighlighter-core' ), $this->agshver );
// phpcs:enable
// Create list of brush aliases and map them to their real brushes
// The key is the language alias
// The value is the script handle suffix: syntaxhighlighter-brush-ThisBitHere (your plugin needs to register the script itself)
$this->brushes = (array) apply_filters( 'syntaxhighlighter_brushes', array(
'as3' => 'as3',
'actionscript3' => 'as3',
'arduino' => 'arduino',
'bash' => 'bash',
'shell' => 'bash',
'coldfusion' => 'coldfusion',
'cf' => 'coldfusion',
'clojure' => 'clojure',
'clj' => 'clojure',
'cpp' => 'cpp',
'c' => 'cpp',
'c-sharp' => 'csharp',
'csharp' => 'csharp',
'css' => 'css',
'delphi' => 'delphi',
'pas' => 'delphi',
'pascal' => 'delphi',
'diff' => 'diff',
'patch' => 'diff',
'erl' => 'erlang',
'erlang' => 'erlang',
'fsharp' => 'fsharp',
'go' => 'go',
'golang' => 'go',
'groovy' => 'groovy',
'haskell' => 'haskell',
'java' => 'java',
'jfx' => 'javafx',
'javafx' => 'javafx',
'js' => 'jscript',
'jscript' => 'jscript',
'javascript' => 'jscript',
'latex' => 'latex', // Not used as a shortcode
'tex' => 'latex',
'matlab' => 'matlabkey',
'matlabkey' => 'matlabkey',
'objc' => 'objc',
'obj-c' => 'objc',
'perl' => 'perl',
'pl' => 'perl',
'php' => 'php',
'plain' => 'plain',
'text' => 'plain',
'ps' => 'powershell',
'powershell' => 'powershell',
'py' => 'python',
'python' => 'python',
'r' => 'r', // Not used as a shortcode
'splus' => 'r',
'rails' => 'ruby',
'rb' => 'ruby',
'ror' => 'ruby',
'ruby' => 'ruby',
'scala' => 'scala',
'sql' => 'sql',
'swift' => 'swift',
'vb' => 'vb',
'vbnet' => 'vb',
'xml' => 'xml',
'xhtml' => 'xml',
'xslt' => 'xml',
'html' => 'xml',
'yaml' => 'yaml',
'yml' => 'yaml',
) );
// phpcs:disable Generic.Functions.FunctionCallArgumentSpacing.TooMuchSpaceAfterComma
$this->brush_names = (array) apply_filters( 'syntaxhighlighter_brush_names', array(
'as3' => __( 'ActionScript', 'syntaxhighlighter' ),
'arduino' => __( 'Arduino', 'syntaxhighlighter' ),
'bash' => __( 'BASH / Shell', 'syntaxhighlighter' ),
'coldfusion' => __( 'ColdFusion', 'syntaxhighlighter' ),
'clojure' => __( 'Clojure', 'syntaxhighlighter' ),
'cpp' => __( 'C / C++', 'syntaxhighlighter' ),
'csharp' => __( 'C#', 'syntaxhighlighter' ),
'css' => __( 'CSS', 'syntaxhighlighter' ),
'delphi' => __( 'Delphi / Pascal', 'syntaxhighlighter' ),
'diff' => __( 'diff / patch', 'syntaxhighlighter' ),
'erlang' => __( 'Erlang', 'syntaxhighlighter' ),
'fsharp' => __( 'F#', 'syntaxhighlighter' ),
'go' => __( 'Go', 'syntaxhighlighter' ),
'groovy' => __( 'Groovy', 'syntaxhighlighter' ),
'haskell' => __( 'Haskell', 'syntaxhighlighter' ),
'java' => __( 'Java', 'syntaxhighlighter' ),
'javafx' => __( 'JavaFX', 'syntaxhighlighter' ),
'jscript' => __( 'JavaScript', 'syntaxhighlighter' ),
'latex' => __( 'LaTeX', 'syntaxhighlighter' ),
'matlabkey' => __( 'MATLAB', 'syntaxhighlighter' ),
'objc' => __( 'Objective-C', 'syntaxhighlighter' ),
'perl' => __( 'Perl', 'syntaxhighlighter' ),
'php' => __( 'PHP', 'syntaxhighlighter' ),
'plain' => __( 'Plain Text', 'syntaxhighlighter' ),
'powershell' => __( 'PowerShell', 'syntaxhighlighter' ),
'python' => __( 'Python', 'syntaxhighlighter' ),
'r' => __( 'R', 'syntaxhighlighter' ),
'ruby' => __( 'Ruby / Ruby on Rails', 'syntaxhighlighter' ),
'scala' => __( 'Scala', 'syntaxhighlighter' ),
'swift' => __( 'Swift', 'syntaxhighlighter' ),
'sql' => __( 'SQL', 'syntaxhighlighter' ),
'vb' => __( 'Visual Basic', 'syntaxhighlighter' ),
'xml' => __( 'HTML / XHTML / XML / XSLT', 'syntaxhighlighter' ),
'yaml' => __( 'YAML', 'syntaxhighlighter' ),
) );
// phpcs:enable
// Add any custom brushes that aren't making use of the newer "syntaxhighlighter_brush_names" filter.
foreach ( $this->brushes as $slug => $language ) {
if ( ! isset( $this->brush_names[ $language ] ) ) {
$this->brush_names[ $language ] = $slug;
}
}
// Create a list of shortcodes to use. You can use the filter to add/remove ones.
// If the language/lang parameter is left out, it's assumed the shortcode name is the language.
// If that's invalid, then "plain" is used.
$this->shortcodes = array( 'sourcecode', 'source', 'code' );
$this->shortcodes = array_merge( $this->shortcodes, array_keys( $this->brushes ) );
// Remove some shortcodes we don't want while still supporting them as language values
unset( $this->shortcodes[array_search( 'latex', $this->shortcodes )] ); // Remove "latex" shortcode (it'll collide)
unset( $this->shortcodes[array_search( 'r', $this->shortcodes )] ); // Remove "r" shortcode (too short)
$this->shortcodes = (array) apply_filters( 'syntaxhighlighter_shortcodes', $this->shortcodes );
// Register each shortcode with a placeholder callback so that strip_shortcodes() will work
// The proper callback and such is done in SyntaxHighlighter::shortcode_hack()
foreach ( $this->shortcodes as $shortcode )
add_shortcode( $shortcode, '__return_empty_string' );
// Create list of themes and their human readable names
// Plugins can add to this list: http://www.viper007bond.com/wordpress-plugins/syntaxhighlighter/adding-a-new-theme/
$this->themes = (array) apply_filters( 'syntaxhighlighter_themes', array(
'default' => __( 'Default', 'syntaxhighlighter' ),
'django' => __( 'Django', 'syntaxhighlighter' ),
'eclipse' => __( 'Eclipse', 'syntaxhighlighter' ),
'emacs' => __( 'Emacs', 'syntaxhighlighter' ),
'fadetogrey' => __( 'Fade to Grey', 'syntaxhighlighter' ),
'midnight' => __( 'Midnight', 'syntaxhighlighter' ),
'rdark' => __( 'RDark', 'syntaxhighlighter' ),
'none' => __( '[None]', 'syntaxhighlighter' ),
) );
// Other special characters that need to be encoded before going into the database (namely to work around kses)
$this->specialchars = (array) apply_filters( 'syntaxhighlighter_specialchars', array(
'\0' => '\0',
) );
}
// Register the settings page
function register_settings_page() {
add_options_page( __( 'SyntaxHighlighter Settings', 'syntaxhighlighter' ), __( 'SyntaxHighlighter', 'syntaxhighlighter' ), 'manage_options', 'syntaxhighlighter', array( $this, 'settings_page' ) );
}
// Register the plugin's setting
function register_setting() {
register_setting( 'syntaxhighlighter_settings', 'syntaxhighlighter_settings', array( $this, 'validate_settings' ) );
}
// Enqueue block assets for the Editor
function enqueue_block_editor_assets() {
wp_enqueue_script(
'syntaxhighlighter-blocks',
plugins_url( 'dist/blocks.build.js', __FILE__ ),
array( 'wp-blocks', 'wp-i18n', 'wp-element', 'wp-editor' ),
( ( defined( 'WP_DEBUG' ) && WP_DEBUG ) || ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) )
? filemtime( plugin_dir_path( __FILE__ ) . 'dist/blocks.build.js' )
: $this->pluginver
);
wp_enqueue_style(
'syntaxhighlighter-blocks-css', // Handle.
plugins_url( 'dist/blocks.editor.build.css', __FILE__ ),
[],
( ( defined( 'WP_DEBUG' ) && WP_DEBUG ) || ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) )
? filemtime( plugin_dir_path( __FILE__ ) . 'dist/blocks.editor.build.css' )
: $this->pluginver
);
// WordPress 5.0+ only, no Gutenberg plugin support
if ( function_exists( 'wp_set_script_translations' ) ) {
wp_set_script_translations( 'syntaxhighlighter-blocks', 'syntaxhighlighter' );
}
natcasesort( $this->brush_names );
$settings = (object) array(
'language' => (object) array(
'supported' => true,
'default' => 'plain'
),
'lineNumbers' => (object) array(
'supported' => true,
'default' => (bool) $this->settings['gutter'],
),
'firstLineNumber' => (object) array(
'supported' => true,
'default' => $this->settings['firstline'],
),
'highlightLines' => (object) array(
'supported' => true,
'default' => '',
),
'wrapLines' => (object) array(
'supported' => ( '2' == $this->settings['shversion'] ),
'default' => (bool) $this->settings['wraplines'],
),
'makeURLsClickable' => (object) array(
'supported' => true,
'default' => (bool) $this->settings['autolinks'],
),
'quickCode' => (object) array(
'supported' => ( '3' == $this->settings['shversion'] ),
'default' => (bool) $this->settings['quickcode'],
),
'tabSize' => (int) $this->settings['tabsize'],
);
wp_add_inline_script(
'syntaxhighlighter-blocks',
sprintf( '
var syntaxHighlighterData = {
brushes: %s,
settings: %s,
};',
json_encode( $this->brush_names ),
json_encode( $settings )
),
'before'
);
}
/**
* Enable the brushes that are used in blocks.
*
* For the shortcode, brushes are activated by `shortcode_callback()`, but that won't detect brushes that were
* used in blocks. For that, we need to extract the data from the block's attributes.
*
* @since 3.3.0
*
* @param string $content The post content.
*
* @return string Unmodified $content.
*/
function enable_brushes_used_in_blocks( $content ) {
/*
* Return early on the backend because SyntaxHighlighting is only active on the front end, see
* `syntaxHighlighterCode::edit()` block for details.
*/
if ( is_admin() ) {
return $content;
}
// Lower overhead than a full parse.
if (
! has_block( 'syntaxhighlighter/code', $content )
&& ! has_block( 'core/block', $content ) // Reusable
) {
return $content;
}
if ( function_exists( 'parse_blocks' ) ) { // WP 5.0+
$blocks = parse_blocks( $content );
} elseif ( Function_exists( 'gutenberg_parse_blocks' ) ) { // Gutenberg plugin
$blocks = gutenberg_parse_blocks( $content );
} else {
return $content;
}
foreach ( $blocks as $block ) {
if ( empty( $block['blockName'] ) ) {
continue;
}
switch ( $block['blockName'] ) {
// Normal block usage
case 'syntaxhighlighter/code':
$language = ( ! empty( $block['attrs']['language'] ) ) ? $block['attrs']['language'] : 'plain';
if ( in_array( $language, $this->brushes, true ) ) {
$this->usedbrushes[ $this->brushes[ $language ] ] = true;
}
break;
// But the block could also be used inside of a reusable block
case 'core/block':
/**
* Rather than going down the block parsing rabbit hole of dynamic blocks,
* let's just hook in post-render and look for our HTML.
*/
add_filter( 'the_content', array( $this, 'enable_brushes_via_raw_html_parsing' ), 10 );
break;
}
}
return $content;
}
/**
* Parses raw HTML looking for SyntaxHighlighter's <pre> tags and queues brushes
* for the languages used.
*
* This filter only runs when a reusable block is used in a post.
* It was easier to implement than loading the block, which then could
* have child blocks and so forth. Technically this means that we're
* parsing any regular SyntaxHighlighter blocks again, but oh well. :)
*
* @since 3.4.2
*
* @param string $content The post content.
*
* @return string Unmodified $content.
*/
public function enable_brushes_via_raw_html_parsing( $content ) {
if ( false === strpos( $content,'<pre class="wp-block-syntaxhighlighter-code' ) ) {
return $content;
}
preg_match_all(
'/<pre class="wp-block-syntaxhighlighter-code brush: ([^;]+);/',
$content,
$languages,
PREG_PATTERN_ORDER
);
if ( is_array( $languages ) ) {
foreach ( $languages[1] as $language ) {
if ( in_array( $language, $this->brushes, true ) ) {
$this->usedbrushes[ $this->brushes[ $language ] ] = true;
}
}
}
return $content;
}
/**
* Renders the content of the Gutenberg block on the front end
* using the shortcode callback. This ensures one source of truth
* and allows for forward compatibility.
*
* @param string $content The block's content.
*
* @return string The rendered content.
*/
public function render_block( $attributes, $content ) {
$remaps = array(
'lineNumbers' => 'gutter',
'firstLineNumber' => 'firstline',
'highlightLines' => 'highlight',
'wrapLines' => 'wraplines',
'makeURLsClickable' => 'autolinks',
'quickCode' => 'quickcode',
);
$classnames = ! empty( $attributes['className'] ) ? [ esc_attr( $attributes['className'] ) ] : [];
if ( ! empty( $attributes['align'] ) ) {
$classnames[] = 'align' . esc_attr( $attributes['align'] );
}
foreach ( $remaps as $from => $to ) {
if ( isset( $attributes[ $from ] ) ) {
if ( is_bool( $attributes[ $from ] ) ) {
$attributes[ $to ] = ( $attributes[ $from ] ) ? '1' : '0';
} else {
$attributes[ $to ] = $attributes[ $from ];
}
unset( $attributes[ $from ] );
}
}
$code = preg_replace( '#<pre [^>]+>([^<]+)?</pre>#', '$1', $content );
$language = null;
if ( isset( $attributes['language'] ) ) {
$language = $attributes['language'];
}
if ( isset( $this->brushes[ $language ] ) ) {
// Undo escaping done by WordPress
$code = htmlspecialchars_decode( $code );
}
$code = preg_replace( '/^(\s*https?:)�?47;�?47;([^\s<>"]+\s*)$/m', '$1//$2', $code );
$code = $this->shortcode_callback( $attributes, $code, 'code' );
return '<div class="wp-block-syntaxhighlighter-code ' . esc_attr( join( ' ', $classnames ) ) . '">' . $code . '</div>';
}
// Add the custom TinyMCE plugin which wraps plugin shortcodes in <pre> in TinyMCE
function add_tinymce_plugin( $plugins ) {
global $tinymce_version;
add_action( 'admin_print_footer_scripts', array( $this, 'output_shortcodes_for_tinymce' ), 9 );
if ( substr( $tinymce_version, 0, 1 ) < 4 ) {
$plugins['syntaxhighlighter'] = plugins_url( 'syntaxhighlighter_mce.js', __FILE__ );
} else {
$plugins['syntaxhighlighter'] = add_query_arg( 'ver', $this->pluginver, plugins_url( 'syntaxhighlighter_mce-4.js', __FILE__ ) );
wp_enqueue_script( 'syntaxhighlighter', plugins_url( 'syntaxhighlighter.js', __FILE__ ), array(), false, true );
}
return $plugins;
}
// Break the TinyMCE cache
function break_tinymce_cache( $version ) {
return $version . '-sh' . $this->pluginver;
}
// Add a "Settings" link to the plugins page
function settings_link( $links, $file ) {
static $this_plugin;
if ( empty( $this_plugin ) ) {
$this_plugin = plugin_basename(__FILE__);
}
if ( $file == $this_plugin ) {
$links[] = '<a href="' . admin_url( 'options-general.php?page=syntaxhighlighter' ) . '">' . __( 'Settings', 'syntaxhighlighter' ) . '</a>';
}
return $links;
}
// Output list of shortcode tags for the TinyMCE plugin
function output_shortcodes_for_tinymce() {
$shortcodes = array();
foreach ( $this->shortcodes as $shortcode )
$shortcodes[] = preg_quote( $shortcode );
echo "<script type='text/javascript'>\n";
echo " var syntaxHLcodes = '" . implode( '|', $shortcodes ) . "';\n";
echo "</script>\n";
}
/**
* Returns all shortcodes not handled by SyntaxHighlighter unchanged, so they
* can be processed by their original handlers after SyntaxHighlighter has
* run.
*
* @param mixed $output The shortcode's returned value (false by default).
* @param string $tag The name of the shortcode.
* @param array|null $attr The shortcode attributes.
* @param array $m Regular expression match array.
* @return string|false Return the matched shortcode as-is for all shortcodes not handled by SyntaxHighlighter, returns $output otherwise.
*/
function pre_do_shortcode_shortcode_hack_skip_others( $output, $tag, $attr, $m ) {
if ( ! in_array( $tag, $this->shortcodes, true ) ) {
return $m[0];
}
return $output;
}
/**
* Process only this plugin's shortcodes.
*
* If we waited for the normal do_shortcode() call at priority 11,
* then wpautop() and maybe others would mangle all of the code.
*
* So instead we hook in earlier with this function and process
* just this plugins's shortcodes. To do this requires some trickery.
*
* First we need to clear out all existing shortcodes, then register
* just this plugin's ones, process them, and then restore the original
* list of shortcodes. Additionally, we have to add another hack to other
* shortcodes, such as [gallery], to return the entire shortcode string as
* it appears in the original content to allow SyntaxHighlighter's shortcode
* strings (e.g., [c]) be used within other shortcodes without interference
* from SyntaxHighlighter.
*
* To make matters more complicated, if someone has done [[code]foo[/code]]
* in order to display the shortcode (not render it), then do_shortcode()
* will strip the outside brackets and when do_shortcode() runs a second
* time later on, it will render it.
*
* So instead before do_shortcode() runs for the first time, we add
* even more brackets escaped shortcodes in order to result in
* the shortcodes actually being displayed instead rendered.
*
* Phew!
*
* @param string $content The post content.
* @param array $callback The callback function that should be used for add_shortcode()
* @param bool $ignore_html When true, shortcodes inside HTML elements will be skipped.
*
* @return string The filtered content, with this plugin's shortcodes parsed.
*/
function shortcode_hack( $content, $callback, $ignore_html = true ) {
global $shortcode_tags;
// Regex is slow. Let's do some strpos() checks first.
if ( ! $this->string_has_shortcodes( $content, $this->shortcodes ) ) {
return $content;
}
// Backup current registered shortcodes and clear them all out (we do not backup our own, because we will add and parse them below)
$orig_shortcode_tags = array_diff_key( $shortcode_tags, array_flip( $this->shortcodes ) );
remove_all_shortcodes();
// Register all of this plugin's shortcodes
foreach ( $this->shortcodes as $shortcode ) {
add_shortcode( $shortcode, $callback );
}
// Register all other shortcodes, ensuring their content remains unchanged using yet another hack.
foreach ( $orig_shortcode_tags as $shortcode_tagname => $shortcode ) {
add_shortcode( $shortcode_tagname, '__return_empty_string' );
}
add_filter( 'pre_do_shortcode_tag', array( $this, 'pre_do_shortcode_shortcode_hack_skip_others' ), 10, 4 );
$regex = '/' . get_shortcode_regex() . '/';
// Parse the shortcodes (only this plugins's are registered)
if ( $ignore_html ) {
// Extra escape escaped shortcodes because do_shortcode_tag() called by do_shortcode() is going to strip a pair of square brackets when it runs
$content = preg_replace_callback(
$regex,
array( $this, 'shortcode_hack_extra_escape_escaped_shortcodes' ),
$content
);
// Normal, safe parsing
$content = do_shortcode( $content, true );
} else {
// Extra escape escaped shortcodes because do_shortcode_tag() called by do_shortcode() is going to strip a pair of square brackets when it runs.
// Then call do_shortcode_tag(). This is basically do_shortcode() without calling do_shortcodes_in_html_tags() which breaks things.
// For context, see https://wordpress.org/support/topic/php-opening-closing-tags-break-code-blocks
$content = preg_replace_callback(
$regex,
array( $this, 'shortcode_hack_extra_escape_escaped_shortcodes_and_parse' ),
$content
);
}
// Put the original shortcodes back, and remove the hacky pre_do_shortcode_tag filter
$shortcode_tags = $orig_shortcode_tags;
remove_filter('pre_do_shortcode_tag', array($this, 'pre_do_shortcode_shortcode_hack_skip_others'), 10);
return $content;
}
/**
* A quick checker to see if any of this plugin's shortcodes are in use in a string.
* Since all of the tags can't be self-closing, we look for the closing tag.
*
* @param string $string The string to look through. This is a post's contents usually.
* @param array $shortcodes The array of shortcodes to look for.
*
* @return bool Whether any shortcode usage was found.
*/
function string_has_shortcodes( $string, $shortcodes ) {
foreach ( $shortcodes as $shortcode ) {
if ( false !== strpos( $string, "[/{$shortcode}]" ) ) {
return true;
}
}
return false;
}
/**
* Add extra square brackets around escaped shortcodes.
* This is to counteract the beginning of the do_shortcode_tag() function.
*
* @param array $match The array of matches generated by get_shortcode_regex()
*
* @return string What should be placed into the post content. In this case it's the raw match, or an extra-wrapped raw match.
*/
function shortcode_hack_extra_escape_escaped_shortcodes( $match ) {
if ( $match[1] == '[' && $match[6] == ']' ) {
return '[' . $match[0] . ']';
}
return $match[0];
}
/**
* This is a combination of this class's shortcode_hack_extra_escape_escaped_shortcodes()
* and do_shortcode_tag() for performance reasons so that we don't have to run some regex twice.
*
* @param array $match Regular expression match array.
*
* @return string|false False on failure, otherwise a parse shortcode tag.
*/
function shortcode_hack_extra_escape_escaped_shortcodes_and_parse( $match ) {
$match[0] = $this->shortcode_hack_extra_escape_escaped_shortcodes( $match );
return do_shortcode_tag( $match );
}
// The main filter for the post contents. The regular shortcode filter can't be used as it's post-wpautop().
function parse_shortcodes( $content ) {
return $this->shortcode_hack( $content, array( $this, 'shortcode_callback' ) );
}
// HTML entity encode the contents of shortcodes
function encode_shortcode_contents( $content ) {
return $this->shortcode_hack( $content, array( $this, 'encode_shortcode_contents_callback' ), false );
}
// HTML entity encode the contents of shortcodes. Expects slashed content.
function encode_shortcode_contents_slashed( $content ) {
return addslashes( $this->encode_shortcode_contents( stripslashes( $content ) ) );
}
// HTML entity encode the contents of shortcodes. Expects slashed content. Aborts if AJAX.
function encode_shortcode_contents_slashed_noquickedit( $content ) {
// In certain weird circumstances, the content gets run through "content_save_pre" twice
// Keep track and don't allow this filter to be run twice
// I couldn't easily figure out why this happens and didn't bother looking into it further as this works fine
if ( true == $this->content_save_pre_ran ) {
return $content;
}
$this->content_save_pre_ran = true;
// Post quick edits aren't decoded for display, so we don't need to encode them (again)
// This also aborts for (un)trashing to avoid extra encoding.
if ( empty( $_POST ) || ( ! empty( $_POST['action'] ) && 'inline-save' == $_POST['action'] ) ) {
return $content;
}
return $this->encode_shortcode_contents_slashed( $content );
}
// HTML entity decode the contents of shortcodes
function decode_shortcode_contents( $content ) {
return $this->shortcode_hack( $content, array( $this, 'decode_shortcode_contents_callback' ), false );
}
// The callback function for SyntaxHighlighter::encode_shortcode_contents()
function encode_shortcode_contents_callback( $atts, $code = '', $tag = false ) {
$this->encoded = true;
$code = str_replace( array_keys( $this->specialchars ), array_values( $this->specialchars ), htmlspecialchars( $code ) );
return '[' . $tag . $this->atts2string( $atts ) . "]{$code}[/$tag]";
}
// The callback function for SyntaxHighlighter::decode_shortcode_contents()
// Shortcode attribute values need to not be quoted with TinyMCE disabled for some reason (weird bug)
function decode_shortcode_contents_callback( $atts, $code = '', $tag = false ) {
$quotes = ( user_can_richedit() ) ? true : false;
$code = str_replace( array_values( $this->specialchars ), array_keys( $this->specialchars ), htmlspecialchars_decode( $code ) );
return '[' . $tag . $this->atts2string( $atts, $quotes ) . "]{$code}[/$tag]";
}
// Dynamically format the post content for the edit form
function the_editor_content( $content ) {
global $post;
// New code format (stored encoded in database)
if ( 2 == $this->get_code_format( $post ) ) {
// If TinyMCE is disabled or the HTML tab is set to be displayed first, we need to decode the HTML
if ( !user_can_richedit() || 'html' == wp_default_editor() )
$content = $this->decode_shortcode_contents( $content );
}
// Old code format (stored raw in database)
else {
// If TinyMCE is enabled and is set to be displayed first, we need to encode the HTML
if ( user_can_richedit() && 'html' != wp_default_editor() )
$content = $this->encode_shortcode_contents( $content );
}
return $content;
}
// Run SyntaxHighlighter::encode_shortcode_contents() on the contents of the text widget
function widget_text_save( $instance, $new_instance, $old_instance, $widgetclass ) {
if ( 'text' == $widgetclass->id_base ) {
// Re-save the widget settings but this time with the shortcode contents encoded
$new_instance['text'] = $this->encode_shortcode_contents( $new_instance['text'] );
$instance = $widgetclass->update( $new_instance, $old_instance );
// And flag it as encoded
$instance['syntaxhighlighter_encoded'] = true;
}
return $instance;
}
// Run SyntaxHighlighter::decode_shortcode_contents_callback() on the contents of the text widget form
function widget_text_form( $instance, $widgetclass ) {
if ( 'text' == $widgetclass->id_base && ! empty( $instance['syntaxhighlighter_encoded'] ) ) {
$instance['text'] = $this->shortcode_hack( $instance['text'], array( $this, 'decode_shortcode_contents_callback' ) );
}
return $instance;
}
// Run SyntaxHighlighter::parse_shortcodes() on the contents of a text widget
function widget_text_output( $content, $instance = false ) {
$this->codeformat = ( false === $instance || empty( $instance['syntaxhighlighter_encoded'] ) ) ? 1 : 2;
$content = $this->parse_shortcodes( $content );
$this->codeformat = false;
return $content;
}
// Run SyntaxHighlighter::parse_shortcodes() on the contents of a comment
function parse_shortcodes_comment( $content ) {
$this->codeformat = 2;
$content = $this->parse_shortcodes( $content );
$this->codeformat = false;
return $content;
}
// This function determines what version of SyntaxHighlighter was used when the post was written
// This is because the code was stored differently for different versions of SyntaxHighlighter
function get_code_format( $post ) {
if ( false !== $this->codeformat ) {
return $this->codeformat;
}
if ( empty( $post ) ) {
$post = new stdClass();
}
if ( null !== $version = apply_filters( 'syntaxhighlighter_pre_getcodeformat', null, $post ) )
return $version;
$version = ( empty( $post->ID ) || get_post_meta( $post->ID, '_syntaxhighlighter_encoded', true ) || get_post_meta( $post->ID, 'syntaxhighlighter_encoded', true ) ) ? 2 : 1;
return apply_filters( 'syntaxhighlighter_getcodeformat', $version, $post );
}
// Adds a post meta saying that HTML entities are encoded (for backwards compatibility)
function mark_as_encoded( $post_ID, $post ) {
if ( false == $this->encoded || 'revision' == $post->post_type )
return;
delete_post_meta( $post_ID, 'syntaxhighlighter_encoded' ); // Previously used
add_post_meta( $post_ID, '_syntaxhighlighter_encoded', true, true );
}
// Transforms an attributes array into a 'key="value"' format (i.e. reverses the process)
function atts2string( $atts, $quotes = true ) {
if ( empty( $atts ) ) {
return '';
}
$atts = $this->attributefix( $atts );
// Re-map [code="php"] style tags
if ( isset( $atts[0] ) ) {
if ( empty( $atts['language'] ) ) {
$atts['language'] = $atts[0];
}
unset( $atts[0] );
}
$strings = array();
foreach ( $atts as $key => $value )
$strings[] = ( $quotes ) ? $key . '="' . esc_attr( $value ) . '"' : $key . '=' . esc_attr( $value );
return ' ' . implode( ' ', $strings );
}
// Simple function for escaping just single quotes (the original js_escape() escapes more than we need)
function js_escape_singlequotes( $string ) {
return str_replace( "'", "\'", $string );
}
// Output any needed scripts. This is meant for the footer.
function maybe_output_scripts() {
global $wp_styles;
if ( 1 == $this->settings['loadallbrushes'] ) {
$this->usedbrushes = array_flip( array_values( $this->brushes ) );
}
if ( empty( $this->usedbrushes ) ) {
return;
}
$scripts = array();
foreach ( $this->usedbrushes as $brush => $unused )
$scripts[] = 'syntaxhighlighter-brush-' . strtolower( $brush );
wp_print_scripts( $scripts );
// Stylesheets can't be in the footer, so inject them via Javascript
echo "<script type='text/javascript'>\n";
echo " (function(){\n";
echo " var corecss = document.createElement('link');\n";
echo " var themecss = document.createElement('link');\n";
if ( ! is_a( $wp_styles, 'WP_Styles' ) ) {
$wp_styles = new WP_Styles();
}