/documentrepository/protected/extensions/tinymce/assets/tiny_mce/tiny_mce_gzip.php

<?php

/**

 * tiny_mce_gzip.php

 *

 * Copyright 2010, Moxiecode Systems AB

 * Released under LGPL License.

 *

 * License: http://tinymce.moxiecode.com/license

 * Contributing: http://tinymce.moxiecode.com/contributing

 */



// Handle incoming request if it's a script call

if (TinyMCE_Compressor::getParam("js")) {

	// Default settings

	$tinyMCECompressor = new TinyMCE_Compressor(array(

	/*

	 * Add any site-specific defaults here that you may wish to implement. For example:

	 *

	 * 	"languages" => "en",

	 *  "cache_dir" => realpath(dirname(__FILE__) . "/../../_cache"),

	 *  "files"     => "somescript,anotherscript",

	 *  "expires"   => "1m",

	 */

	));



	// Handle request, compress and stream to client

	$tinyMCECompressor->handleRequest();

}



/**

 * This class combines and compresses the TinyMCE core, plugins, themes and

 * language packs into one disk cached gzipped request. It improves the loading speed of TinyMCE dramatically but

 * still provides dynamic initialization.

 *

 * Example of direct usage:

 * require_once("../jscripts/tiny_mce/tiny_mce_gzip.php");

 *

 * // Renders script tag with compressed scripts

 * TinyMCE_Compressor::renderTag(array(

 *    "url" => "../jscripts/tiny_mce/tiny_mce_gzip.php",

 *    "plugins" => "pagebreak,style",

 *    "themes" => "advanced",

 *    "languages" => "en"

 * ));

 */

class TinyMCE_Compressor {

	private $files, $settings;

	private static $defaultSettings = array(

		"plugins"    => "",

		"themes"     => "",

		"languages"  => "",

		"disk_cache" => true,

		"expires"    => "30d",

		"cache_dir"  => "",

		"compress"   => true,

		"suffix"     => "",

		"files"      => "",

		"source"     => false,

	);



	/**

	 * Constructs a new compressor instance.

	 *

	 * @param Array $settings Name/value array with non-default settings for the compressor instance.

	 */

	public function __construct($settings = array()) {

		$this->settings = array_merge(self::$defaultSettings, $settings);



		if (empty($this->settings["cache_dir"]))

			$this->settings["cache_dir"] = dirname(__FILE__);

	}



	/**

	 * Adds a file to the concatenation/compression process.

	 *

	 * @param String $path Path to the file to include in the compressed package/output.

	 */

	public function &addFile($file) {

		$this->files .= ($this->files ? "," : "") . $file;



		return $this;

	}



	/**

	 * Handles the incoming HTTP request and sends back a compressed script depending on settings and client support.

	 */

	public function handleRequest() {

		$files = array();

		$supportsGzip = false;

		$expiresOffset = $this->parseTime($this->settings["expires"]);

		$tinymceDir = dirname(__FILE__);



		// Override settings with querystring params

		$plugins = self::getParam("plugins");

		if ($plugins)

			$this->settings["plugins"] = $plugins;

		$plugins = explode(',', $this->settings["plugins"]);



		$themes = self::getParam("themes");

		if ($themes)

			$this->settings["themes"] = $themes;

		$themes = explode(',', $this->settings["themes"]);



		$languages = self::getParam("languages");

		if ($languages)

			$this->settings["languages"] = $languages;

		$languages = explode(',', $this->settings["languages"]);



		$tagFiles = self::getParam("files");

		if ($tagFiles)

			$this->settings["files"] = $tagFiles;



		$diskCache = self::getParam("diskcache");

		if ($diskCache)

			$this->settings["disk_cache"] = ($diskCache === "true");



		$src = self::getParam("src");

		if ($src)

			$this->settings["source"] = ($src === "true");



		// Add core

		$files[] = "tiny_mce";

		foreach ($languages as $language)

			$files[] = "langs/$language";



		// Add plugins

		foreach ($plugins as $plugin) {

			$files[] = "plugins/$plugin/editor_plugin";



			foreach ($languages as $language)

				$files[] = "plugins/$plugin/langs/$language";

		}



		// Add themes

		foreach ($themes as $theme) {

			$files[] = "themes/$theme/editor_template";



			foreach ($languages as $language)

				$files[] = "themes/$theme/langs/$language";

		}



		// Add any specified files.

		$allFiles = array_merge($files, explode(',', $this->settings['files']));



		// Process source files

		for ($i = 0; $i < count($allFiles); $i++) {

			$file = $allFiles[$i];



			if ($this->settings["source"] && file_exists($file . "_src.js")) {

				$file .= "_src.js";

			} else if (file_exists($file . ".js"))  {

				$file .= ".js";

			} else {

				$file = "";

			}



			$allFiles[$i] = $file;

		}



		// Generate hash for all files

		$hash = md5(implode('', $allFiles));



		// Check if it supports gzip

		$zlibOn = ini_get('zlib.output_compression') || (ini_set('zlib.output_compression', 0) === false);

		$encodings = (isset($_SERVER['HTTP_ACCEPT_ENCODING'])) ? strtolower($_SERVER['HTTP_ACCEPT_ENCODING']) : "";

		$encoding = preg_match( '/\b(x-gzip|gzip)\b/', $encodings, $match) ? $match[1] : "";



		// Is northon antivirus header

		if (isset($_SERVER['---------------']))

			$encoding = "x-gzip";



		$supportsGzip = $this->settings['compress'] && !empty($encoding) && !$zlibOn && function_exists('gzencode');



		// Set cache file name

		$cacheFile = $this->settings["cache_dir"] . "/" . $hash . ($supportsGzip ? ".gz" : ".js");



 		// Set headers

		header("Content-type: text/javascript");

		header("Vary: Accept-Encoding");  // Handle proxies

		header("Expires: " . gmdate("D, d M Y H:i:s", time() + $expiresOffset) . " GMT");

		header("Cache-Control: public, max-age=" . $expiresOffset);



		if ($supportsGzip)

			header("Content-Encoding: " . $encoding);



		// Use cached file

		if ($this->settings['disk_cache'] && file_exists($cacheFile)) {

			readfile($cacheFile);

			return;

		}



		// Set base URL for where tinymce is loaded from

		$buffer = "var tinyMCEPreInit={base:'" . dirname($_SERVER["SCRIPT_NAME"]) . "',suffix:''};";



		// Load all tinymce script files into buffer

		foreach ($allFiles as $file) {

			if ($file) {

				$fileContents = $this->getFileContents($tinymceDir . "/" . $file);

//				$buffer .= "\n//-FILE-$tinymceDir/$file (". strlen($fileContents) . " bytes)\n";

				$buffer .= $fileContents;

			}

		}



		// Mark all themes, plugins and languages as done

		$buffer .= 'tinymce.each("' . implode(',', $files) . '".split(","),function(f){tinymce.ScriptLoader.markDone(tinyMCE.baseURL+"/"+f+".js");});';



		// Compress data

		if ($supportsGzip)

			$buffer = gzencode($buffer, 9, FORCE_GZIP);



		// Write cached file

		if ($this->settings["disk_cache"])

			@file_put_contents($cacheFile, $buffer);	



		// Stream contents to client

		echo $buffer;

	}



	/**

	 * Renders a script tag that loads the TinyMCE script.

	 *

	 * @param Array $settings Name/value array with settings for the script tag.

	 * @param Bool  $return   The script tag is return instead of being output if true

	 * @return String the tag is returned if $return is true  

	 */

	public static function renderTag($tagSettings, $return = false) {

		$settings = array_merge(self::$defaultSettings, $tagSettings);



		if (empty($settings["cache_dir"]))

			$settings["cache_dir"] = dirname(__FILE__);



		$scriptSrc = $settings["url"] . "?js=1";



		// Add plugins

		if (isset($settings["plugins"]))

			$scriptSrc .= "&plugins=" . (is_array($settings["plugins"]) ? implode(',', $settings["plugins"]) : $settings["plugins"]);



		// Add themes

		if (isset($settings["themes"]))

			$scriptSrc .= "&themes=" . (is_array($settings["themes"]) ? implode(',', $settings["themes"]) : $settings["themes"]);



		// Add languages

		if (isset($settings["languages"]))

			$scriptSrc .= "&languages=" . (is_array($settings["languages"]) ? implode(',', $settings["languages"]) : $settings["languages"]);



		// Add disk_cache

		if (isset($settings["disk_cache"]))

			$scriptSrc .= "&diskcache=" . ($settings["disk_cache"] === true ? "true" : "false");



		// Add any explicitly specified files if the default settings have been overriden by the tag ones

		/*

		 * Specifying tag files will override (rather than merge with) any site-specific ones set in the 

		 * TinyMCE_Compressor object creation.  Note that since the parameter parser limits content to alphanumeric

		 * only base filenames can be specified.  The file extension is assumed to be ".js" and the directory is

		 * the TinyMCE root directory.  A typical use of this is to include a script which initiates the TinyMCE object. 

		 */

		if (isset($tagSettings["files"]))

			$scriptSrc .= "&files=" .(is_array($settings["files"]) ? implode(',', $settings["files"]) : $settings["files"]);



		// Add src flag

		if (isset($settings["source"]))

			$scriptSrc .= "&src=" . ($settings["source"] === true ? "true" : "false");



		$scriptTag = '<script type="text/javascript" src="' . htmlspecialchars($scriptSrc) . '"></script>';



		if ($return) {

			return $scriptTag;

		} else {

			echo $scriptTag;

		}

	}



	/**

	 * Returns a sanitized query string parameter.

	 *

	 * @param String $name Name of the query string param to get.

	 * @param String $default Default value if the query string item shouldn't exist.

	 * @return String Sanitized query string parameter value.

	 */

	public static function getParam($name, $default = "") {

		if (!isset($_GET[$name]))

			return $default;



		return preg_replace("/[^0-9a-z\-_,]+/i", "", $_GET[$name]); // Sanatize for security, remove anything but 0-9,a-z,-_,

	}



	/**

	 * Parses the specified time format into seconds. Supports formats like 10h, 10d, 10m.

	 *

	 * @param String $time Time format to convert into seconds.

	 * @return Int Number of seconds for the specified format.

	 */

	private function parseTime($time) {

		$multipel = 1;



		// Hours

		if (strpos($time, "h") > 0)

			$multipel = 3600;



		// Days

		if (strpos($time, "d") > 0)

			$multipel = 86400;



		// Months

		if (strpos($time, "m") > 0)

			$multipel = 2592000;



		// Trim string

		return intval($time) * $multipel;

	}



	/**

	 * Returns the contents of the script file if it exists and removes the UTF-8 BOM header if it exists.

	 *

	 * @param String $file File to load.

	 * @return String File contents or empty string if it doesn't exist.

	 */

	private function getFileContents($file) {

		$content = file_get_contents($file);



		// Remove UTF-8 BOM

		if (substr($content, 0, 3) === pack("CCC", 0xef, 0xbb, 0xbf))

			$content = substr($content, 3);



		return $content;

	}

}

?>