<?php
/**
 * $Id: tiny_mce_gzip.php 315 2007-10-25 14:03:43Z 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";
 $core = getParam("core", "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", "") . $suffix;

  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
 if ($core == "true") {
  $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
 if ($core == "true")
  $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);
  }
 }
?>
