class Engine:
sentinal = bytes('ENCODED\n', 'utf-8')
# used to determine if the correct key was used
# to decrypt the file
def __init__(self, filename, encrypter):
self.name = filename
self.fp = None
self._sfp = None
self.mode = None
self.encrypter = encrypter
def __del__(self):
self.close()
def __repr__(self):
return '<%s "%s">' % (self.__class__.__name__, self.name)
def open(self):
try:
from ioXXX import StringIO
except ImportError:
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
self.fp = StringIO()
self._sfp = open(self.name, self._filemode)
self.mode = self._filemode.replace("b", "")
def close(self):
if self.fp:
self.fp = None
self.mode = None
if self._sfp:
self._sfp.close()
self._sfp = None
def seek(self, pos, whence=0):
if self.fp:
self.fp.seek(0, whence)
def open(self):
try:
from ioXXX import StringIO
except ImportError:
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
self.fp = StringIO()
self._sfp = open(self.name, self._filemode)
self.mode = self._filemode.replace("b", "")