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<?php
/**
 * $Id: tiny_mce_gzip.php 158 2006-12-21 14:32:19Z spocke $
 *
 * @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.
 */

        // Set the error reporting to minimal.
        @error_reporting(E_ERROR | E_WARNING | E_PARSE);

        // Get input
        $plugins = explode(',', getParam("plugins", ""));
        $languages = explode(',', getParam("languages", ""));
        $themes = explode(',', getParam("themes", ""));
        $diskCache = getParam("diskcache", "") == "true";
        $isJS = getParam("js", "") == "true";
        $compress = getParam("compress", "true") == "true";
        $suffix = getParam("suffix", "_src") == "_src" ? "_src" : "";
        $cachePath = realpath("."); // Cache path, this is where the .gz files will be stored
        $expiresOffset = 3600 * 24 * 10; // Cache for 10 days in browser cache
        $content = "";
        $encodings = array();
        $supportsGzip = false;
        $enc = "";
        $cacheKey = "";

        // Custom extra javascripts to pack
        $custom = array(/*
                "some custom .js file",
                "some custom .js file"
        */);

        // 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");

        // Is called directly then auto init with default settings
        if (!$isJS) {
                echo getFileContents("tiny_mce_gzip.js");
                echo "tinyMCE_GZ.init({});";
                die();
        }

        // Setup cache info
        if ($diskCache) {
                if (!$cachePath)
                        die("alert('Real path failed.');");

                $cacheKey = getParam("plugins", "") . getParam("languages", "") . getParam("themes", "");

                foreach ($custom as $file)
                        $cacheKey .= $file;

                $cacheKey = md5($cacheKey);

                if ($compress)
                        $cacheFile = $cachePath . "/tiny_mce_" . $cacheKey . ".gz";
                else
                        $cacheFile = $cachePath . "/tiny_mce_" . $cacheKey . ".js";
        }

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

        if ((in_array('gzip', $encodings) || in_array('x-gzip', $encodings) || isset($_SERVER['---------------'])) && function_exists('ob_gzhandler') && !ini_get('zlib.output_compression')) {
                $enc = in_array('x-gzip', $encodings) ? "x-gzip" : "gzip";
                $supportsGzip = true;
        }

        // Use cached file disk cache
        if ($diskCache && $supportsGzip && file_exists($cacheFile)) {
                if ($compress)
                        header("Content-Encoding: " . $enc);

                echo getFileContents($cacheFile);
                die();
        }

        // Add core
        $content .= getFileContents("tiny_mce" . $suffix . ".js");

        // Patch loading functions
        $content .= "tinyMCE_GZ.start();";

        // Add core languages
        foreach ($languages as $lang)
                $content .= getFileContents("langs/" . $lang . ".js");

        // Add themes
        foreach ($themes as $theme) {
                $content .= getFileContents( "themes/" . $theme . "/editor_template" . $suffix . ".js");

                foreach ($languages as $lang)
                        $content .= getFileContents("themes/" . $theme . "/langs/" . $lang . ".js");
        }

        // Add plugins
        foreach ($plugins as $plugin) {
                $content .= getFileContents("plugins/" . $plugin . "/editor_plugin" . $suffix . ".js");

                foreach ($languages as $lang)
                        $content .= getFileContents("plugins/" . $plugin . "/langs/" . $lang . ".js");
        }

        // Add custom files
        foreach ($custom as $file)
                $content .= getFileContents($file);

        // Restore loading functions
        $content .= "tinyMCE_GZ.end();";

        // Generate GZIP'd content
        if ($supportsGzip) {
                if ($compress) {
                        header("Content-Encoding: " . $enc);
                        $cacheData = gzencode($content, 9, FORCE_GZIP);
                } else
                        $cacheData = $content;

                // Write gz file
                if ($diskCache && $cacheKey != "")
                        putFileContents($cacheFile, $cacheData);

                // Stream to client
                echo $cacheData;
        } else {
                // Stream uncompressed content
                echo $content;
        }

        /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

        function getParam($name, $def = false) {
                if (!isset($_GET[$name]))
                        return $def;

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

        function getFileContents($path) {
                $path = realpath($path);

                if (!$path || !@is_file($path))
                        return "";

                if (function_exists("file_get_contents"))
                        return @file_get_contents($path);

                $content = "";
                $fp = @fopen($path, "r");
                if (!$fp)
                        return "";

                while (!feof($fp))
                        $content .= fgets($fp);

                fclose($fp);

                return $content;
        }

        function putFileContents($path, $content) {
                if (function_exists("file_put_contents"))
                        return @file_put_contents($path, $content);

                $fp = @fopen($path, "wb");
                if ($fp) {
                        fwrite($fp, $content);
                        fclose($fp);
                }
        }
?>