<?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("Content-type: text/javascript; charset=utf-8");
    header("Vary: Accept-Encoding; Content-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);
        }
    }
?>