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# coding=utf-8
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT
from __future__ import print_function
from __future__ import absolute_import
import sys
import time


class ProgressCallback(object):
    """
    Class to display the progress in the console
    """

    def __init__(self, time_change_step=0.5):
        self.time_change_step = time_change_step
        self.ts_start = time.time()
        self.ts_change_screen = 0

    def start(self):
        self.ts_start = time.time()

    @staticmethod
    def stop():
        print('')

    def change_screen(self, percentage):
        sys.stdout.write(
            '\rProgress: {0:.2f}%; work time: {1}s'.format(
                percentage, int(time.time() - self.ts_start)))
        sys.stdout.flush()
        self.ts_change_screen = time.time()

    def __call__(self, percentage, force=False):
        if force or (time.time() - self.ts_change_screen >= self.time_change_step):
            self.change_screen(percentage)

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