class Zip::FileSystem::ZipFsDirIterator

def close
  @filenames = nil
end

def each(&a_proc)
  raise IOError, 'closed directory' if @filenames.nil?
  @filenames.each(&a_proc)
end

def initialize(filenames)
  @filenames = filenames
  @index = 0
end

def read
  raise IOError, 'closed directory' if @filenames.nil?
  @filenames[(@index += 1) - 1]
end

def rewind
  raise IOError, 'closed directory' if @filenames.nil?
  @index = 0
end

def seek(position)
  raise IOError, 'closed directory' if @filenames.nil?
  @index = position
end

def tell
  raise IOError, 'closed directory' if @filenames.nil?
  @index
end