Ticket #3572: tiny_mce_gzip.phps

<?php
/**
 * $RCSfile: tiny_mce_gzip.php,v $
 * $Revision: $
 * $Date: $
 *
 * @version 1.08
 * @author Moxiecode
 * @copyright Copyright � 2005-2006, Moxiecode Systems AB, All rights reserved.
 *
 * This file compresses the TinyMCE JavaScript using GZip and
 * enables the browser to do two requests instead of one for each .js file.
 * Notice: This script defaults the button_tile_map option to true for extra performance.
 */

@require_once('../../../wp-config.php');

// gzip_compression();

function wp_tinymce_lang($path) {
        global $language;

        $text = '';

        // Look for xx_YY.js, xx_yy.js, xx.js
        $file = realpath(sprintf($path, $language));
        if ( file_exists($file) )
                $text = file_get_contents($file);
        $file = realpath(sprintf($path, strtolower($language)));
        if ( file_exists($file) )
                $text = file_get_contents($file);
        $file = realpath(sprintf($path, substr($language, 0, 2)));
        if ( file_exists($file) )
                $text = file_get_contents($file);


        // Fall back on en.js
        $file = realpath(sprintf($path, 'en'));
        if ( empty($text) && file_exists($file) )
                $text = file_get_contents($file);

        // Send lang file through gettext
        if ( function_exists('__') && strtolower(substr($language, 0, 2)) != 'en' ) {
                $search1 = "/^tinyMCELang\\[(['\"])(.*)\\1\]( ?= ?)(['\"])(.*)\\4/Uem";
                $replace1 = "'tinyMCELang[\\1\\2\\1]\\3'.stripslashes('\\4').__('\\5').stripslashes('\\4')";

                $search2 = "/\\s:\\s(['\"])(.*)\\1(,|\\s*})/Uem";
                $replace2 = "' : '.stripslashes('\\1').__('\\2').stripslashes('\\1').'\\3'";

                $search = array($search1, $search2);
                $replace = array($replace1, $replace2);

                $text = preg_replace($search, $replace, $text);

                return $text;
        }

        return $text;
}

function wp_compact_tinymce_js($text) {
        // This function was custom-made for TinyMCE 2.0, not expected to work with any other JS.

        // Strip comments
        $text = preg_replace("!(^|\s+)//.*$!m", '', $text);
        $text = preg_replace("!/\*.*?\*/!s", '', $text);

        // Strip leading tabs, carriage returns and unnecessary line breaks.
        $text = preg_replace("!^\t+!m", '', $text);
        $text = str_replace("\r", '', $text);
        $text = preg_replace("!(^|{|}|;|:|\))\n!m", '\\1', $text);

        return "$text\n";
}


// General options
$suffix = "";                                                   // Set to "_src" to use source version
$expiresOffset = 3600 * 24 * 10;                // 10 days util client cache expires
$diskCache = false;                                             // If you enable this option gzip files will be cached on disk.
$cacheDir = realpath(".");                              // Absolute directory path to where cached gz files will be stored
$debug = false;                                                 // Enable this option if you need debuging info

// Headers
header("Content-type: text/javascript; charset: UTF-8");
// header("Cache-Control: must-revalidate");
header("Vary: Accept-Encoding"); // Handle proxies
header("Expires: " . gmdate("D, d M Y H:i:s", time() + $expiresOffset) . " GMT");

// Get data to load
$theme = isset($_GET['theme']) ? TinyMCE_cleanInput($_GET['theme']) : "";
$language = isset($_GET['language']) ? TinyMCE_cleanInput($_GET['language']) : "";
$plugins = isset($_GET['plugins']) ? TinyMCE_cleanInput($_GET['plugins']) : "";
$lang = isset($_GET['lang']) ? TinyMCE_cleanInput($_GET['lang']) : "en";
$index = isset($_GET['index']) ? TinyMCE_cleanInput($_GET['index']) : -1;
$cacheKey = md5($theme . $language . $plugins . $lang . $index . $debug);
$cacheFile = $cacheDir == "" ? "" : $cacheDir . "/" . "tinymce_" .  $cacheKey . ".gz";
$cacheData = "";

// Patch older versions of PHP < 4.3.0
if (!function_exists('file_get_contents')) {
        function file_get_contents($filename) {
                $fd = fopen($filename, 'rb');
                $content = fread($fd, filesize($filename));
                fclose($fd);
                return $content;
        }
}

// Security check function, can only contain a-z 0-9 , _ - and whitespace.
function TinyMCE_cleanInput($str) {
        return preg_replace("/[^0-9a-z\-_,]+/i", "", $str); // Remove anything but 0-9,a-z,-_
}

function TinyMCE_echo($str) {
        global $cacheData, $diskCache;

        if ($diskCache)
                $cacheData .= $str;
        else
                echo $str;
}

// Only gzip the contents if clients and server support it
$encodings = array();

if (isset($_SERVER['HTTP_ACCEPT_ENCODING']))
        $encodings = explode(',', strtolower(preg_replace("/\s+/", "", $_SERVER['HTTP_ACCEPT_ENCODING'])));

// Check for gzip header or northon internet securities
if ((in_array('gzip', $encodings) || in_array('x-gzip', $encodings) || isset($_SERVER['---------------'])) && function_exists('ob_gzhandler') && !ini_get('zlib.output_compression')) {

} else
        $diskCache = false;

if ($index > -1) {
        // Write main script and patch some things
        if ($index == 0) {
                TinyMCE_echo(wp_compact_tinymce_js(file_get_contents(realpath("tiny_mce" . $suffix . ".js")))); // WP
                TinyMCE_echo('TinyMCE.prototype.orgLoadScript = TinyMCE.prototype.loadScript;');
                TinyMCE_echo('TinyMCE.prototype.loadScript = function() {};var realTinyMCE = tinyMCE;');
        } else
                TinyMCE_echo('tinyMCE = realTinyMCE;');

        // Do init based on index
        TinyMCE_echo("tinyMCE.init(tinyMCECompressed.configs[" . $index . "]);");

        // Load external plugins
        if ($index == 0)
                TinyMCE_echo("tinyMCECompressed.loadPlugins();");

        // Load theme, language pack and theme language packs
        if ($theme) {
                TinyMCE_echo(wp_compact_tinymce_js(file_get_contents(realpath("themes/" . $theme . "/editor_template" . $suffix . ".js")))); // WP
                TinyMCE_echo(wp_tinymce_lang("themes/" . $theme . "/langs/%s.js")); // WP
        }

        /* WP if ($language) WP */
                TinyMCE_echo(wp_tinymce_lang("langs/%s.js")); // WP

        // Load all plugins and their language packs
        $plugins = explode(",", $plugins);
        foreach ($plugins as $plugin) {
                $pluginFile = realpath("plugins/" . $plugin . "/editor_plugin" . $suffix . ".js");
                /* WP $languageFile = realpath("plugins/" . $plugin . "/langs/" . $lang . ".js"); WP */

                if ($pluginFile)
                        TinyMCE_echo(file_get_contents($pluginFile));

                /* WP if ($languageFile) WP */
                        TinyMCE_echo(wp_tinymce_lang("plugins/" . $plugin . "/langs/%s.js")); // WP
        }

        // Reset tinyMCE compressor engine
        TinyMCE_echo("tinyMCE = tinyMCECompressed;");

        // Write to cache
        if ($diskCache) {
                // Calculate compression ratio and debug target output path
                if ($debug) {
                        $ratio = round(100 - strlen(gzencode($cacheData, 9, FORCE_GZIP)) / strlen($cacheData) * 100.0);
                        TinyMCE_echo("alert('TinyMCE was compressed by " . $ratio . "%.\\nOutput cache file: " . $cacheFile . "');");
                }

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

                // Write to file if possible
                $fp = @fopen($cacheFile, "wb");
                if ($fp) {
                        fwrite($fp, $cacheData);
                        fclose($fp);
                }

                // Output
                header("Content-Encoding: " . $enc);
                echo $cacheData;
        }

        die;
}
?>

function TinyMCECompressed() {
        this.configs = new Array();
        this.loadedFiles = new Array();
        this.externalPlugins = new Array();
        this.loadAdded = false;
        this.isLoaded = false;
}

TinyMCECompressed.prototype.init = function(settings) {
        var elements = document.getElementsByTagName('script');
        var scriptURL = "";

        for (var i=0; i<elements.length; i++) {
                if (elements[i].src && elements[i].src.indexOf("tiny_mce_gzip.php") != -1) {
                        scriptURL = elements[i].src;
                        break;
                }
        }

        settings["theme"] = typeof(settings["theme"]) != "undefined" ? settings["theme"] : "default";
        settings["plugins"] = typeof(settings["plugins"]) != "undefined" ? settings["plugins"] : "";
        settings["language"] = typeof(settings["language"]) != "undefined" ? settings["language"] : "en";
        settings["button_tile_map"] = typeof(settings["button_tile_map"]) != "undefined" ? settings["button_tile_map"] : true;
        this.configs[this.configs.length] = settings;
        this.settings = settings;

        scriptURL += (scriptURL.indexOf('?') == -1) ? '?' : '&';
        scriptURL += "theme=" + escape(this.getOnce(settings["theme"])) + "&language=" + escape(this.getOnce(settings["language"])) + "&plugins=" + escape(this.getOnce(settings["plugins"])) + "&lang=" + settings["language"] + "&index=" + escape(this.configs.length-1);
        document.write('<sc'+'ript language="javascript" type="text/javascript" src="' + scriptURL + '"></script>');

        if (!this.loadAdded) {
                tinyMCE.addEvent(window, "DOMContentLoaded", TinyMCECompressed.prototype.onLoad);
                tinyMCE.addEvent(window, "load", TinyMCECompressed.prototype.onLoad);
                this.loadAdded = true;
        }
}

TinyMCECompressed.prototype.onLoad = function() {
        if (tinyMCE.isLoaded)
                return true;

        tinyMCE = realTinyMCE;
        TinyMCE_Engine.prototype.onLoad();
        tinyMCE._addUnloadEvents();

        tinyMCE.isLoaded = true;
}

TinyMCECompressed.prototype.addEvent = function(o, n, h) {
        if (o.attachEvent)
                o.attachEvent("on" + n, h);
        else
                o.addEventListener(n, h, false);
}

TinyMCECompressed.prototype.getOnce = function(str) {
        var ar = str.replace(/\s+/g, '').split(',');

        for (var i=0; i<ar.length; i++) {
                if (ar[i] == '' || ar[i].charAt(0) == '-') {
                        ar[i] = null;
                        continue;
                }

                // Skip load
                for (var x=0; x<this.loadedFiles.length; x++) {
                        if (this.loadedFiles[x] == ar[i])
                                ar[i] = null;
                }

                this.loadedFiles[this.loadedFiles.length] = ar[i];
        }

        // Glue
        str = "";
        for (var i=0; i<ar.length; i++) {
                if (ar[i] == null)
                        continue;

                str += ar[i];

                if (i != ar.length-1)
                        str += ",";
        }

        return str;
};

TinyMCECompressed.prototype.loadPlugins = function() {
        var i, ar;

        TinyMCE.prototype.loadScript = TinyMCE.prototype.orgLoadScript;
        tinyMCE = realTinyMCE;

        ar = tinyMCECompressed.externalPlugins;
        for (i=0; i<ar.length; i++)
                tinyMCE.loadPlugin(ar[i].name, ar[i].url);

        TinyMCE.prototype.loadScript = function() {};
};

TinyMCECompressed.prototype.loadPlugin = function(n, u) {
        this.externalPlugins[this.externalPlugins.length] = {name : n, url : u};
};

TinyMCECompressed.prototype.importPluginLanguagePack = function(n, v) {
        tinyMCE = realTinyMCE;
        TinyMCE.prototype.loadScript = TinyMCE.prototype.orgLoadScript;
        tinyMCE.importPluginLanguagePack(n, v);
};

TinyMCECompressed.prototype.addPlugin = function(n, p) {
        tinyMCE = realTinyMCE;
        tinyMCE.addPlugin(n, p);
};

var tinyMCE = new TinyMCECompressed();
var tinyMCECompressed = tinyMCE;