def open_file(self, name, *args, **kwargs):
offset, length = self.range(name)
if self._source:
# Create a memoryview/buffer from the mmap
buf = memoryview_(self._source, offset, length)
f = BufferFile(buf, name=name)
elif hasattr(self._file, "subset"):
f = self._file.subset(offset, length, name=name)
else:
f = StructFile(SubFile(self._file, offset, length), name=name)
return f
def _open_encrypted_file(self, name, onclose=lambda x: None):
if not self.file_exists(name):
if name in self._open_files:
f = self._open_files[name]
if not f.is_closed:
state = 'closed' if f.file.shouldClose else 'open'
if state == 'closed':
self._store_file(name, f.file.getvalue())
f.close()
del self._open_files[name]
else:
raise NameError(name)
file_content = open(self._fpath(name), "rb").read()
decrypted = self.decrypt(file_content)
self.length_cache[name] = (len(decrypted), sha256(decrypted).digest())
return BufferFile(buffer(decrypted), name=name, onclose=onclose)
def open_file(self, name, **kwargs):
if name not in self.files:
raise NameError(name)
buf = memoryview_(self.files[name])
return BufferFile(buf, name=name, **kwargs)
def _open_encrypted_file(self, name, onclose=lambda x: None):
file_content = open(self._fpath(name), "rb").read()
decrypted = self.f.decrypt(file_content)
self.length_cache[name] = len(decrypted)
return BufferFile(buffer(decrypted), name=name, onclose=onclose)