1430         try:

  1430         try:

  1431             with self._opener(self._file) as fp:

  1431             with self._opener(self._file) as fp:

  1432                 set = super(manifestfulltextcache, self).__setitem__

  1432                 set = super(manifestfulltextcache, self).__setitem__

  1433                 # ignore trailing data, this is a cache, corruption is skipped

  1433                 # ignore trailing data, this is a cache, corruption is skipped

  1434                 while True:

  1434                 while True:

  1435                     node = fp.read(20)

  1436                     node = fp.read(20)

  1436                     if len(node) < 20:

  1437                     if len(node) < 20:

  1437                         break

  1438                         break

  1438                     try:

  1439                     try:

  1439                         size = struct.unpack(b'>L', fp.read(4))[0]

  1440                         size = struct.unpack(b'>L', fp.read(4))[0]