# File lib/FileSystemImage.rb, line 11
def FileSystemImage.is_file_system_image_filename?(filename)
  
  extension=File.extname(File.basename(filename,".gz")).downcase
  RipXploreLog.debug("checking if is file system image filename - #{filename} (extension #{extension})")
  RipXploreLog.debug(ImageFormat.all_possible_extensions.join(";"))
  ImageFormat.all_possible_extensions.include?(extension)
end