Add Coder 1.0

coder.php

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+<?php
+
+/*
+Plugin Name: Coder
+Plugin URI: http://jamesmckay.net/code/coder/
+Description: Automatically escape code within &lt;code&gt;...&lt;/code&gt; tag and highlights it using Alex Gorbatchev's javascript based Syntax Highlighter. Based on Code Auto Escape by Priyadi Iman Nurcahyo and SyntaxHighlighter by matt, Viper007Bond and mdawaffe. 
+Version: 1.0 alpha 1
+Author: James McKay 
+Author URI: http://jamesmckay.net/
+*/
+
+
+
+class jm_coder
+{
+	/* ====== Display options ====== */
+
+	var $opts;
+
+	var $numbers = true;
+	var $controls = true;
+	var $collapse = false;
+	var $columns = false;
+
+
+	/* ====== [ Code Auto Escape ] ====== */
+
+	/* ====== mask code ====== */
+
+	function mask($text) {
+		// Quick optimisation if there are no code blocks
+		if (stripos($text, '<code') === false) {
+			return $text;
+		}
+		$textarr = preg_split("/(<code[^>]*>.*<\\/code>)/Us", $text, -1, PREG_SPLIT_DELIM_CAPTURE); // capture the tags as well as in between
+		$stop = count($textarr);// loop stuff
+		for ($i = 0; $i < $stop; $i++) {
+			$content = $textarr[$i];
+			if (preg_match("/^<code[^>]*>(.*)<\\/code>/Us", $content, $code)) { // If it's a code	
+				$content = '[code]' . base64_encode($code[1]) . '[/code]';
+			}
+			$output .= $content;
+		}
+		return $output;
+	}
+
+
+	/* ====== unmask code ====== */
+
+	function unmask($text, $replace = false, $addpre = false) {
+		// Quick optimisation if there are no code blocks
+		if (stripos ($text, '[code]') === false) {
+			return $text;
+		}
+
+		$textarr = preg_split("/(\\[code\\].*\\[\\/code\\])/Us", $text, -1, PREG_SPLIT_DELIM_CAPTURE); // capture the tags as well as in between
+		$stop = count($textarr);// loop stuff
+		for ($i = 0; $i < $stop; $i++) {
+			$content = $textarr[$i];
+			if (preg_match("/^\\[code\\](.*)\\[\\/code\\]/Us", $content, $code)) { // If it's a code
+				$content = base64_decode($code[1]);
+				if ($replace) {
+					$content = preg_replace("/<\\\\\\/([^>]+)>/", '</$1>', $content);
+					$content = preg_replace("/\\r/", '', $content);
+					$content = preg_replace("/^\\s*?\\n/", "\n", $content);
+					$content = preg_replace("/&/", '&amp;', $content);
+					$content = preg_replace("/</", '&lt;', $content);
+					$content = preg_replace("/>/", '&gt;', $content);
+					$content = '<code>' . $content . '</code>';
+					if ($addpre) {
+						if (preg_match('/\\n/', $content)) {
+							$content = "<pre>" . $content . "</pre>";
+						}
+					}
+				} else {
+					$content = "<code>" . $content . "</code>";
+				}
+			}
+			$output .= $content;
+		}
+		return $output;
+	}
+
+
+	/* ====== unmask and do replacement ====== */
+
+	function unmask_replace($text) {
+		return $this->unmask($text, true);
+	}
+
+
+	/* ====== unmask and do replacement, plus enclose in <pre> ====== */
+
+	function unmask_replace_addpre($text) {
+		return $this->unmask($text, true, true);
+	}
+
+
+	/* ====== Code Auto Escape init ====== */
+
+	function caeInit()
+	{
+		add_filter('content_save_pre', array(&$this, 'mask'), 28);
+		add_filter('content_save_pre', array(&$this, 'unmask'), 72);
+		add_filter('the_content', array(&$this, 'mask'), 1);
+		add_filter('the_content', array(&$this, 'unmask_replace'), 99);
+
+		add_filter('excerpt_save_pre', array(&$this, 'mask'), 28);
+		add_filter('excerpt_save_pre', array(&$this, 'unmask'), 72);
+		add_filter('the_excerpt', array(&$this, 'mask'), 1);
+		add_filter('the_excerpt', array(&$this, 'unmask_replace'), 99);
+
+		add_filter('pre_comment_content', array(&$this, 'mask'), 4);
+		add_filter('pre_comment_content', array(&$this, 'unmask'), 36);
+		add_filter('comment_save_pre', array(&$this, 'mask'), 28);
+		add_filter('comment_save_pre', array(&$this, 'unmask'), 72);
+		add_filter('comment_text', array(&$this, 'mask'), 1);
+		add_filter('comment_text', array(&$this, 'unmask_replace_addpre'), 99);
+	}
+
+
+	/* ====== [ JavaScript style-up ] ====== */
+
+	var $languages;
+	var $scripts;
+
+	function do_pre($tag)
+	{
+		if (stripos($tag[1], 'lang') === false) {
+			return $tag[0];
+		}
+
+		$count = preg_match_all('/\\s(.*?)\\s*=\\s*([\'\"])(.*?)\\2/s', $tag[1], $matches);
+		$attrs = array();
+		for($i = 0; $i < $count; $i++) {
+			$attrs[$matches[1][$i]] = $matches[3][$i];
+		}
+
+		$lang = $attrs['lang'];
+		$script = $this->languages[$lang];
+		$this->scripts[$script] = $lang;
+
+		$attrs['name'] = 'code';
+		$attrs['class'] = $attrs['lang'];
+		unset($attrs['lang']);
+
+		// Add the options
+
+		foreach ($this->opts as $k => $v) {
+			$a = $this->$k;
+			if (isset ($attrs[$k])) {
+				switch (strtolower($attrs[$k])) {
+					case '1':
+					case 'true':
+					case 'on':
+					case 'yes':
+						$a = true;
+						break;
+					case '0':
+					case 'off':
+					case 'false':
+					case 'no':
+						$a = false;
+				}
+				unset ($attrs[$k]);
+			}
+			$attrs['class'] .= $v[$a ? 0 : 1];
+		}
+
+		if (isset($attrs['start'])) {
+			$attrs['class'] .= ":firstline[$attrs[start]]";
+			unset($attrs['start']);
+		}
+
+		$result = '<pre';
+		foreach ($attrs as $k => $v) {
+			$result .= ' ' . $k . '="' . $v . '"';
+		}
+		return $result . '>' . $tag[3] . '</pre>';
+	}
+
+
+	function get_scripts($text)
+	{
+		if (stripos($text, '<pre') === false) {
+			return $text;
+		}		
+		return preg_replace_callback(
+			'/<pre(\s[^>]*)?>(<code>)?(.*?)(<\/code>)?<\/pre>/is', 
+			array(&$this, 'do_pre'), $text);
+	}
+
+
+	function write_scripts()
+	{
+		if (count($this->scripts) > 0) {
+			$baseUrl = get_bloginfo( 'wpurl' ) . '/wp-content/plugins/coder/files';
+
+			echo "<!-- SyntaxHighlighter Stuff -->\n";
+			echo "<script type=\"text/javascript\" src=\"$baseUrl/shCore.js\"></script>\n";
+			foreach ($this->scripts as $k => $v) {
+				echo "<script type=\"text/javascript\" src=\"$baseUrl/$k\"></script>\n";
+			}
+			echo "<script type=\"text/javascript\">\n";
+			echo "\tdp.SyntaxHighlighter.ClipboardSwf = '$baseUrl/clipboard.swf';\n";
+			echo "\tdp.SyntaxHighlighter.HighlightAll('code');\n";
+			echo "</script>\n";
+		}
+	}
+
+
+	function add_stylesheet()
+	{
+		$baseUrl = get_bloginfo( 'wpurl' ) . '/wp-content/plugins/coder/files';
+		echo "<link rel=\"stylesheet\" type=\"text/css\" href=\"$baseUrl/SyntaxHighlighter.css\" />\n";
+	}
+
+
+	function jsInit()
+	{
+		add_filter('the_content', array(&$this, 'get_scripts'), 100); // Needs to be called after the last the_content in caeInit()
+		add_filter('comment_text', array(&$this, 'get_scripts'), 100);
+		add_action( 'wp_footer', array(&$this, 'write_scripts'), 1000 );
+		add_action( 'admin_footer', array(&$this, 'write_scripts'), 1000 ); // For viewing comments in admin area
+		add_action( 'wp_head', array(&$this, 'add_stylesheet'), 1000 );
+		add_action( 'admin_head', array(&$this, 'add_stylesheet'), 1000 );
+		add_action('admin_menu', array(&$this, 'add_config_page'));
+		$this->scripts = array();
+		$this->languages = array(
+			'cpp'        => 'shBrushCpp.js',
+			'c'          => 'shBrushCpp.js',
+			'c++'        => 'shBrushCpp.js',
+			'c#'         => 'shBrushCSharp.js',
+			'c-sharp'    => 'shBrushCSharp.js',
+			'csharp'     => 'shBrushCSharp.js',
+			'css'        => 'shBrushCss.js',
+			'delphi'     => 'shBrushDelphi.js',
+			'pascal'     => 'shBrushDelphi.js',
+			'java'       => 'shBrushJava.js',
+			'js'         => 'shBrushJScript.js',
+			'jscript'    => 'shBrushJScript.js',
+			'javascript' => 'shBrushJScript.js',
+			'php'        => 'shBrushPhp.js',
+			'py'         => 'shBrushPython.js',
+			'python'     => 'shBrushPython.js',
+			'rb'         => 'shBrushRuby.js',
+			'ruby'       => 'shBrushRuby.js',
+			'rails'      => 'shBrushRuby.js',
+			'ror'        => 'shBrushRuby.js',
+			'sql'        => 'shBrushSql.js',
+			'vb'         => 'shBrushVb.js',
+			'vb.net'     => 'shBrushVb.js',
+			'xml'        => 'shBrushXml.js',
+			'html'       => 'shBrushXml.js',
+			'xhtml'      => 'shBrushXml.js',
+			'xslt'       => 'shBrushXml.js',
+		);
+		$this->opts = array(
+			// directive => array(true, false, default, description) 
+			'numbers' => array('', ':nogutter', true, 'Show line numbers'),
+			'controls' => array('', ':nocontrols', true, 'Show clipboard controls above each code block'),
+			'collapse' => array(':collapse', '', false, 
+				'Collapse code blocks when first shown (this has no effect if clipboard controls are not shown)'),
+			'columns' => array(':showcolumns', '', false, 
+				'Show column numbers above each code block')
+		);
+		$settings = get_option('jm_coder');
+		foreach ($this->opts as $k => $v) {
+			if ($settings !== false && isset($settings[$k])) {
+				$this->$k = $settings[$k];
+			}
+			else {
+				$this->$k = $v[2];			
+			}
+		}
+	}
+
+
+	/* ====== Configuration ====== */
+
+	function admin_page()
+	{
+		if ('POST' == $_SERVER['REQUEST_METHOD']) {
+
+			$settings = array();
+			foreach ($this->opts as $k => $v) {
+				$this->$k = $settings[$k] = $_POST[$k] ? true : false;
+			}
+			update_option('jm_coder', $settings);
+
+			echo '<div id="coder-saved" class="updated fade-ffff00"">';
+			echo '<p><strong>';
+			_e('Options saved.');
+			echo '</strong></p></div>';
+		}
+
+		require_once(dirname(__FILE__) . '/config.php');
+	}
+
+
+	/* ====== add_config_page ====== */
+
+	/**
+	 * Adds the configuration page to the submenu
+	 */
+
+	function add_config_page()
+	{
+		add_submenu_page('options-general.php', __('Source code'), __('Source code'), 
+			'manage_options', 'coder', array(&$this, 'admin_page'));
+	}
+
+
+
+	/* ====== constructor ====== */
+
+	function jm_coder()
+	{
+		$this->caeInit();
+		$this->jsInit();
+	}
+}
+
+
+$myCoder = new jm_coder();

config.php

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+<div class="wrap">
+	<h2>Code syntax highlighting default options</h2>
+	<form method="post" action="" id="coder-conf">
+		<p>These options can be overridden for each code block.</p>
+		<?php foreach ($this->opts as $k => $v): ?>
+			<p>
+				<input type="checkbox" id="<?php echo $k; ?>" name="<?php echo $k; ?>" <?php
+					if ($this->$k) { echo ' checked="checked"'; } 
+					?> />
+				<label for="<?php echo $k; ?>">
+					<?php echo $v[3]; ?>
+				</label>
+			</p>
+		<?php endforeach; ?>	
+		<p class="submit">
+			<input type="submit" name="Submit" value="Update Options &raquo;" />
+		</p>
+	</form>
+</div>