# coding: utf-8
# Copyright (c) 2016, 2021, Oracle and/or its affiliates.  All rights reserved.
# This software is dual-licensed to you under the Universal Permissive License (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl or Apache License 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose either license.


class FileReadCallbackStream:
    def __init__(self, file, progress_callback):
        self.progress_callback = progress_callback
        self.file = file
        self.mode = file.mode

    # this is used by 'requests' to determine the Content-Length header using fstat
    def fileno(self):
        return self.file.fileno()

    def read(self, n):
        self.progress_callback(n)
        return self.file.read(n)

    def __getattr__(self, attr):
        return getattr(self.file, attr)
