Merge "fat16copy: Allow to copy files to an existing directory."

    data.seek(0)

    data_file.write(data.read())

  def new_subdirectory(self, name):

  def open_subdirectory(self, name):

    """

    Create a new subdirectory of this directory with the given name.

    Open a subdirectory of this directory with the given name. If the

    subdirectory doesn't exist, a new one is created instead.

    Returns a fat_dir().

    """

    for dent in self.dentries:

      if dent.longname == name:

        return dent.open_directory()

    chunk = self.backing.fs.allocate(1)

    (shortname, ext) = self.make_short_name(name)

    new_dentry = self.add_dentry(ATTRIBUTE_SUBDIRECTORY, shortname,

    base = os.path.basename(item)

    if len(base) == 0:

      base = os.path.basename(item[:-1])

    sub = directory.new_subdirectory(base)

    sub = directory.open_subdirectory(base)

    for next_item in sorted(os.listdir(item)):

      add_item(sub, os.path.join(item, next_item))

  else: