def download(self, path, to):
conn, desc = self.session.data_objects.open(path, O_RDONLY)
raw = iRODSDataObjectFileRaw(conn, desc)
br = BufferedRandom(raw)
try:
with open(to, 'w') as wf:
while(True):
buf = _readLargeBlock(br)
if not buf:
break
wf.write(buf)
finally:
conn.release(True)
br.close()
return to
def read(self, path, offset, size):
buf = None
br = None
conn = None
try:
conn, desc = self.session.data_objects.open(path, O_RDONLY)
raw = iRODSDataObjectFileRaw(conn, desc)
br = BufferedRandom(raw)
new_offset = br.seek(offset)
if new_offset == offset:
buf = br.read(size)
finally:
if br:
br.close()
if conn:
conn.release(True)
return buf
def open(self, path, mode='r', errors=None):
stream = self.opened.get(path)
if not stream:
if mode[0] == 'r':
raise FileNotFoundError(path)
stream = self.opened[path] = BytesIO()
stream.seek(0)
stream = BufferedRandom(stream) if mode[-1] == 'b' else TextIOWrapper(
stream)
stream.close = stream.flush
return stream
def FileClose(file_handle: io.BufferedRandom) -> None:
file_handle.close()