private function _bootStrap($packed, $keywords)
 {
     $ENCODE = $this->_safeRegExp('$encode\\($count\\)');
     // $packed: the packed script
     $packed = "'" . $this->_escape($packed) . "'";
     // $ascii: base for encoding
     $ascii = min(count($keywords['sorted']), $this->_encoding);
     if ($ascii == 0) {
         $ascii = 1;
     }
     // $count: number of words contained in the script
     $count = count($keywords['sorted']);
     // $keywords: list of words contained in the script
     foreach ($keywords['protected'] as $i => $value) {
         $keywords['sorted'][$i] = '';
     }
     // convert from a string to an array
     ksort($keywords['sorted']);
     $keywords = "'" . implode('|', $keywords['sorted']) . "'.split('|')";
     $encode = $this->_encoding > 62 ? '_encode95' : $this->_getEncoder($ascii);
     $encode = $this->_getJSFunction($encode);
     $encode = preg_replace('/_encoding/', '$ascii', $encode);
     $encode = preg_replace('/arguments\\.callee/', '$encode', $encode);
     $inline = '\\$count' . ($ascii > 10 ? '.toString(\\$ascii)' : '');
     // $decode: code snippet to speed up decoding
     if ($this->_fastDecode) {
         // create the decoder
         $decode = $this->_getJSFunction('_decodeBody');
         if ($this->_encoding > 62) {
             $decode = preg_replace('/\\\\w/', '[\\xa1-\\xff]', $decode);
         } elseif ($ascii < 36) {
             $decode = preg_replace($ENCODE, $inline, $decode);
         }
         // special case: when $count==0 there are no keywords. I want to keep
         //  the basic shape of the unpacking funcion so i'll frig the code...
         if ($count == 0) {
             $decode = preg_replace($this->_safeRegExp('($count)\\s*=\\s*1'), '$1=0', $decode, 1);
         }
     }
     // boot function
     $unpack = $this->_getJSFunction('_unpack');
     if ($this->_fastDecode) {
         // insert the decoder
         $this->buffer = $decode;
         $unpack = preg_replace_callback('/\\{/', array(&$this, '_insertFastDecode'), $unpack, 1);
     }
     $unpack = preg_replace('/"/', "'", $unpack);
     if ($this->_encoding > 62) {
         // high-ascii
         // get rid of the word-boundaries for regexp matches
         $unpack = preg_replace('/\'\\\\\\\\b\'\\s*\\+|\\+\\s*\'\\\\\\\\b\'/', '', $unpack);
     }
     if ($ascii > 36 || $this->_encoding > 62 || $this->_fastDecode) {
         // insert the encode function
         $this->buffer = $encode;
         $unpack = preg_replace_callback('/\\{/', array(&$this, '_insertFastEncode'), $unpack, 1);
     } else {
         // perform the encoding inline
         $unpack = preg_replace($ENCODE, $inline, $unpack);
     }
     // pack the boot function too
     $unpackPacker = new PhpWsdlJavaScriptPacker($unpack, 0, false, true);
     $unpack = $unpackPacker->pack();
     // arguments
     $params = array($packed, $ascii, $count, $keywords);
     if ($this->_fastDecode) {
         $params[] = 0;
         $params[] = '{}';
     }
     $params = implode(',', $params);
     // the whole thing
     return 'eval(' . $unpack . '(' . $params . "))\n";
 }
 /**
  * Compress a JavaScript
  * 
  * @param string $js The uncompressed JavaScript
  * @return string The compressed JavaScript
  */
 private function PackJavaScript($js)
 {
     if (!self::IsJsPackerAvailable()) {
         return $js;
     }
     PhpWsdl::Debug('Compress a JavaScript');
     if (PhpWsdl::HasHookHandler('ServersPackJsHook')) {
         return PhpWsdl::CallHook('ServersPackJsHook', array('server' => $this, 'js' => &$js));
     }
     $packer = new PhpWsdlJavaScriptPacker(utf8_decode($js), 62, true, true);
     return utf8_encode($packer->pack());
 }