'Open archive entry.'

def __init__(self, parser, inf):

    super(RarExtFile, self).__init__()
    self.name = inf.filename
    self.mode = 'rb'
    self._parser = parser
    self._inf = inf
    self._fd = None
    self._remain = 0
    self._returncode = 0
    self._md_context = None
    self._open()
