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function utf8_encodeFN($file,$safe=true){

  global $conf;
  if($conf['fnencode'] == 'utf-8') {
   	$file=mb_convert_encoding($file,"CP936","UTF-8");
return $file;}

  if($safe && preg_match('#^[a-zA-Z0-9/_\-\.%]+$#',$file)){
      return $file;
  }

  if($conf['fnencode'] == 'safe'){
      return SafeFN::encode($file);
  }

  $file = urlencode($file);
  $file = str_replace('%2F','/',$file);
  return $file;

}

function utf8_decodeFN($file){

  global $conf;
  if($conf['fnencode'] == 'utf-8') {
   	$file=mb_convert_encoding($file,"UTF-8","CP936");
return $file;}

  if($conf['fnencode'] == 'safe'){
      return SafeFN::decode($file);
  }

  return urldecode($file);

}