<?php 
// some code below is from:
/**
 * $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.
 **/

// Discard any buffers
while ( @ob_end_clean() );

@ require('../../../wp-load.php');

function getFileContents($path) {

	if ( function_exists('realpath') )
		$path = realpath($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 );

	$newfile = false;
	$fp = @fopen( $path, 'wb' );
	if ($fp) {
		$newfile = fwrite( $fp, $content );
		fclose($fp);
	}
	return $newfile;
}

// Set up init variables
$baseurl = includes_url('js/tinymce');

$mce_css = $baseurl . '/wordpress.css';
$mce_css = apply_filters('mce_css', $mce_css);

$mce_locale = ( '' == get_locale() ) ? 'en' : strtolower( substr(get_locale(), 0, 2) ); // only ISO 639-1

/*
The following filter allows localization scripts to change the languages displayed in the spellchecker's drop-down menu.
By default it uses Google's spellchecker API, but can be configured to use PSpell/ASpell if installed on the server.
The + sign marks the default language. More information:
http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/spellchecker
*/
$mce_spellchecker_languages = apply_filters('mce_spellchecker_languages', '+English=en,Danish=da,Dutch=nl,Finnish=fi,French=fr,German=de,Italian=it,Polish=pl,Portuguese=pt,Spanish=es,Swedish=sv');

$plugins = array( 'safari', 'inlinepopups', 'autosave', 'spellchecker', 'paste', 'wordpress', 'media', 'fullscreen', 'wpeditimage' );

/* 
The following filter takes an associative array of external plugins for TinyMCE in the form 'plugin_name' => 'url'.
It adds the plugin's name to TinyMCE's plugins init and the call to PluginManager to load the plugin. 
The url should be absolute and should include the js file name to be loaded. Example: 
array( 'myplugin' => 'http://my-site.com/wp-content/plugins/myfolder/mce_plugin.js' )
If the plugin uses a button, it should be added with one of the "$mce_buttons" filters.
*/
$mce_external_plugins = apply_filters('mce_external_plugins', array());

$ext_plugins = "\n";
if ( ! empty($mce_external_plugins) ) {
	
	/*
	The following filter loads external language files for TinyMCE plugins.
	It takes an associative array 'plugin_name' => 'path', where path is the 
	include path to the file. The language file should follow the same format as 
	/tinymce/langs/wp-langs.php and should define a variable $strings that 
	holds all translated strings. Example: 
	$strings = 'tinyMCE.addI18n("' . $mce_locale . '.mypluginname_dlg",{tab_general:"General", ... })';
	*/
	$mce_external_languages = apply_filters('mce_external_languages', array()); 
	
	$loaded_langs = array();
	$strings = '';
	
	if ( ! empty($mce_external_languages) ) {
		foreach ( $mce_external_languages as $name => $path ) {
			if ( is_file($path) && is_readable($path) ) { 
				include_once($path);
				$ext_plugins .= $strings;
				$loaded_langs[] = $name;
			}
		}
	}

	foreach ( $mce_external_plugins as $name => $url ) {
		
		if ( is_ssl() ) $url = str_replace('http://', 'https://', $url);
		
		$plugins[] = '-' . $name;

		if ( in_array($name, $loaded_langs) ) {
			$plugurl = dirname($url);
			$ext_plugins .= 'tinyMCEPreInit.load_ext("' . $plugurl . '", "' . $mce_locale . '");' . "\n";
		}
		$ext_plugins .= 'tinymce.PluginManager.load("' . $name . '", "' . $url . '");' . "\n";
	}
}
$plugins = implode($plugins, ',');

$mce_buttons = apply_filters('mce_buttons', array('bold', 'italic', 'strikethrough', '|', 'bullist', 'numlist', 'blockquote', '|', 'justifyleft', 'justifycenter', 'justifyright', '|', 'link', 'unlink', 'wp_more', '|', 'spellchecker', 'fullscreen', 'wp_adv' ));
$mce_buttons = implode($mce_buttons, ',');

$mce_buttons_2 = apply_filters('mce_buttons_2', array('formatselect', 'underline', 'justifyfull', 'forecolor', '|', 'pastetext', 'pasteword', 'removeformat', '|', 'media', 'charmap', '|', 'outdent', 'indent', '|', 'undo', 'redo', 'wp_help' ));
$mce_buttons_2 = implode($mce_buttons_2, ',');

$mce_buttons_3 = apply_filters('mce_buttons_3', array());
$mce_buttons_3 = implode($mce_buttons_3, ',');
	
$mce_buttons_4 = apply_filters('mce_buttons_4', array());
$mce_buttons_4 = implode($mce_buttons_4, ',');

$do_captions = ( defined('CAPTIONS_OFF') && true == CAPTIONS_OFF ) ? false : true;

// TinyMCE init settings
$initArray = array (
	'mode' => 'none',
	'onpageload' => 'wpEditorInit',
	'width' => '100%',
	'theme' => 'advanced',
	'skin' => 'wp_theme',
	'theme_advanced_buttons1' => "$mce_buttons",
	'theme_advanced_buttons2' => "$mce_buttons_2",
	'theme_advanced_buttons3' => "$mce_buttons_3",
	'theme_advanced_buttons4' => "$mce_buttons_4",
	'language' => "$mce_locale",
	'spellchecker_languages' => "$mce_spellchecker_languages",
	'theme_advanced_toolbar_location' => 'top',
	'theme_advanced_toolbar_align' => 'left',
	'theme_advanced_statusbar_location' => 'bottom',
	'theme_advanced_resizing' => true,
	'theme_advanced_resize_horizontal' => false,
	'dialog_type' => 'modal',
	'relative_urls' => false,
	'remove_script_host' => false,
	'convert_urls' => false,
	'apply_source_formatting' => false,
	'remove_linebreaks' => true,
	'paste_convert_middot_lists' => true,
	'paste_remove_spans' => true,
	'paste_remove_styles' => true,
	'gecko_spellcheck' => true,
	'entities' => '38,amp,60,lt,62,gt',
	'accessibility_focus' => false,
	'tab_focus' => ':next',
	'content_css' => "$mce_css",
	'save_callback' => 'switchEditors.saveCallback',
	'wpeditimage_do_captions' => $do_captions,
	'plugins' => "$plugins",
	// pass-through the settings for compression and caching, so they can be changed with "tiny_mce_before_init"
	'disk_cache' => true,
	'compress' => true,
	'old_cache_max' => '1' // number of cache files to keep
);

// For people who really REALLY know what they're doing with TinyMCE
// You can modify initArray to add, remove, change elements of the config before tinyMCE.init (changed from action to filter)
$initArray = apply_filters('tiny_mce_before_init', $initArray);

// Setting "valid_elements", "invalid_elements" and "extended_valid_elements" can be done through "tiny_mce_before_init".
// Best is to use the default cleanup by not specifying valid_elements, as TinyMCE contains full set of XHTML 1.0.

// support for deprecated actions
ob_start();
do_action('mce_options');
$mce_deprecated = ob_get_contents();
ob_end_clean();

$mce_deprecated = (string) $mce_deprecated;
if ( strlen( $mce_deprecated ) < 10 || ! strpos( $mce_deprecated, ':' ) || ! strpos( $mce_deprecated, ',' ) )	
	$mce_deprecated = '';

// Settings for the gzip compression and cache
$disk_cache = ( ! isset($initArray['disk_cache']) || false == $initArray['disk_cache'] ) ? false : true;
$compress = ( ! isset($initArray['compress']) || false == $initArray['compress'] ) ? false : true;
$old_cache_max = ( isset($initArray['old_cache_max']) ) ? (int) $initArray['old_cache_max'] : 0;

$initArray['disk_cache'] = $initArray['compress'] = $initArray['old_cache_max'] = null;
unset( $initArray['disk_cache'], $initArray['compress'], $initArray['old_cache_max'] );

// Anybody still using IE5/5.5? It can't handle gzip compressed js well.
if ( $msie = strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') ) {
	$ie_ver = (int) substr( $_SERVER['HTTP_USER_AGENT'] , $msie + 5, 3 );
	if ( $ie_ver && $ie_ver < 6 ) $compress = false;
}

// Cache path, this is where the .gz files will be stored
$cache_path = WP_CONTENT_DIR . '/uploads/js_cache'; 
if ( $disk_cache && ! is_dir($cache_path) )
	$disk_cache = wp_mkdir_p($cache_path);

$cache_ext = '.js';
$plugins = explode( ',', $initArray['plugins'] );
$theme = ( 'simple' == $initArray['theme'] ) ? 'simple' : 'advanced';
$language = ( isset($initArray['language']) && ! empty($initArray['language']) ) ? substr( $initArray['language'], 0, 2 ) : 'en';
$cacheKey = $mce_options = '';	

// Check if browser supports gzip
if ( $compress && isset($_SERVER['HTTP_ACCEPT_ENCODING']) ) {
	if ( ( false !== strpos( strtolower($_SERVER['HTTP_ACCEPT_ENCODING']), 'gzip') || isset($_SERVER['---------------']) ) && function_exists('gzencode') && ! ini_get('zlib.output_compression') ) {
		$cache_ext = '.gz';
	}
}

// Setup cache info
if ( $disk_cache ) {

	$cacheKey = apply_filters('tiny_mce_version', '20080731');

	foreach ( $initArray as $v )
		$cacheKey .= $v;

	if ( ! empty($mce_external_plugins) ) {
		foreach ( $mce_external_plugins as $n => $v )
			$cacheKey .= $n;
	}
	
	$cacheKey = md5( $cacheKey );
	$cache_file = $cache_path . '/tinymce_' . $cacheKey . $cache_ext;
}

$expiresOffset = 864000; // 10 days
header( 'Content-Type: application/x-javascript; charset=UTF-8' );
header( 'Vary: Accept-Encoding' ); // Handle proxies
header( 'Expires: ' . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . ' GMT' );

// Use cached file if exists
if ( $disk_cache && is_file($cache_file) && is_readable($cache_file) ) {

	$mtime = gmdate("D, d M Y H:i:s", filemtime($cache_file)) . " GMT";
	
	if ( isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $_SERVER['HTTP_IF_MODIFIED_SINCE'] == $mtime ) {
		header('HTTP/1.1 304 Not Modified');
		exit;
	}
	header("Last-Modified: " . $mtime);
	header("Cache-Control: must-revalidate", false);

	$content = getFileContents( $cache_file );
	
	if ( '.gz' == $cache_ext )
		header( 'Content-Encoding: gzip' );

	echo $content;
	exit;
}

foreach ( $initArray as $k => $v ) 
    $mce_options .= $k . ':"' . $v . '",';

if ( $mce_deprecated ) $mce_options .= $mce_deprecated;

$mce_options = rtrim( trim($mce_options), '\n\r,' );

$content = 'var tinyMCEPreInit = { settings : { themes : "' . $theme . '", plugins : "' . $initArray['plugins'] . '", languages : "' . $language . '", debug : false }, base : "' . $baseurl . '", suffix : "", query : "ver=311" };';

// Load patch
$content .= getFileContents( 'tiny_mce_ext.js' );

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

// Patch loading functions
$content .= 'tinyMCEPreInit.start();';

// Add all languages (WP)
include_once( dirname(__FILE__).'/langs/wp-langs.php' );
$content .= $strings;

// Add themes
$content .= getFileContents( 'themes/' . $theme . '/editor_template.js' );

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

// Add external plugins and init 
$content .= $ext_plugins . 'tinyMCE.init({' . $mce_options . '});';

// Generate GZIP'd content
if ( '.gz' == $cache_ext ) {
	header('Content-Encoding: gzip');
	$content = gzencode( $content, 9, FORCE_GZIP );
}

// Stream to client
echo $content;

// Write file
if ( '' != $cacheKey && is_dir($cache_path) && is_readable($cache_path) ) {	

	$old_cache = array();
	$handle = opendir($cache_path);
	while ( false !== ( $file = readdir($handle) ) ) {
		if ( $file == '.' || $file == '..' ) continue;
        $saved = filectime("$cache_path/$file");
		if ( strpos($file, 'tinymce_') !== false && substr($file, -3) == $cache_ext ) $old_cache["$saved"] = $file;
	}
	closedir($handle);
			
	krsort($old_cache);
	if ( 1 >= $old_cache_max ) $del_cache = $old_cache;
	else $del_cache = array_slice( $old_cache, ($old_cache_max - 1) );

	foreach ( $del_cache as $key )
		@unlink("$cache_path/$key");

	putFileContents( $cache_file, $content );
}

?>