# Copyright (c) 2023, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from nvflare.fuel.utils.buffer_list import BufferList
[docs]class BufListStream:
def __init__(self, buf_list: list = None):
self.buffer_list = BufferList(buf_list)
self.pos = 0
self.size = self.buffer_list.get_size()
[docs] def getvalue(self):
return self.buffer_list.get_list()
[docs] def write(self, buf: bytes):
self.buffer_list.append(buf)
[docs] def read(self, n: int):
end = self.pos + n
if end > self.size:
end = self.size
result = self.buffer_list.read(self.pos, end)
self.pos = end
return result