/**
  * @return boolean
  * @param string $tag
  * @param int $isMime
  * @desc Check if a file is indexable by the zOOm toolbox.
  * @access public
  */
 function isIndexable($tag, $isMime = false)
 {
     if ($isMime) {
         $tag = MIME_Helper::convertMimeToExtension($tag);
     }
     return in_array($tag, $this->_indexableList());
 }
 /**
  * Autodetect a file's MIME-type
  *
  * This function may be called staticly.
  *
  * @param  string $file        Path to the file to get the type of
  * @param  string $custom_mime An optional custom 'default' value, mostly used for the filetype sent by the users' browser
  * @param  bool   $params      Append MIME parameters if true
  * @return string $file's      MIME-type on success, false boolean otherwise
  * @since 1.0.0beta1
  * @static
  */
 function autoDetect($file, $custom_mime = null, $custom_ext = null, $params = false)
 {
     if (function_exists('mime_content_type')) {
         $type = mime_content_type($file);
         if ($type == "application/octet-stream" || $type == "application/unknown") {
             if (!empty($custom_mime)) {
                 $type = $custom_mime;
             } elseif (!empty($custom_ext)) {
                 $type = MIME_Helper::convertExtensionToMime($custom_ext);
             }
         }
     } elseif (!empty($custom_mime)) {
         $type = $custom_mime;
     } else {
         $type = MIME_Type::_fileAutoDetect($file);
     }
     // _fileAutoDetect() may have returned an error.
     if ($type === false) {
         return $type;
     }
     //return PEAR::raiseError("Sorry, can't autodetect; you need the mime_magic extension or System_Command and 'file' installed to use this function.");
     if (!MIME_Helper::convertMimeToExtension($type)) {
         $type = MIME_Helper::convertExtensionToMime($custom_mime);
     }
     // flv (Flash Video format) files need exceptional handling (for now I'll provide a fictional mimetype)
     if ($custom_ext == "flv") {
         $type = "video/x-flv";
     }
     // Don't return an empty string
     if (!$type || !strlen($type)) {
         //return PEAR::raiseError("Sorry, couldn't determine file type.");
         return false;
     }
     // Strip parameters if present & requested
     if (MIME_Type::hasParameters($type) && !$params) {
         $type = MIME_Type::stripParameters($type);
     }
     return $type;
 }