module Utils::Find::ConfigurableFinder::PathExtension

def exist?
  !!file
end

def file
  tried = false
  begin
    file = @finder.get_file(self)
    if file
      file.closed? and file.reopen(file.path, 'rb')
    else
      file = File.new(self, 'rb')
      @finder.add_file self, file
    end
    return file
  rescue Errno::EMFILE
    tried and raise
    @finder.close_files
    tried = true
    retry
  rescue Errno::ENOENT, Errno::EACCES
    return
  end
end

def lstat
  file and file.lstat
end

def pathname
  Pathname.new(self)
end

def stat
  file and file.stat
end

def suffix
  pathname.extname[1..-1]
end