#!/usr/bin/env python

# Copyright (c) 2019, Intel Corporation
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#   * Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the Intel Corporation nor the
#     names of its contributors may be used to endorse or promote products
#     derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Author: Janusz Jankowski <janusz.jankowski@linux.intel.com>
#

# Loads current config file and updates with values from another
# config file. Configs that are not set in neither of files are set
# to default value.
#
# Usage:
#   overrideconfig.py KCONFIG_FILENAME CONFIG_OVERRIDE_FILE

import os
import sys

import kconfiglib


def main():
    if len(sys.argv) < 3:
        sys.exit("usage: {} KCONFIG_FILENAME CONFIG_OVERRIDE_FILE"
	    .format(sys.argv[0]))

    kconf = kconfiglib.Kconfig(sys.argv[1])
    kconf.load_config()

    kconf.disable_override_warnings()
    kconf.disable_redun_warnings()

    kconf.load_config(filename=sys.argv[2], replace=False)

    kconf.enable_override_warnings()
    kconf.enable_redun_warnings()

    kconf.write_config()


if __name__ == "__main__":
    main()