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#!/bin/bash
# Copyright (C) David P. <megver83@parabola.nu>
# Look for CONFIG lines which try to enable blobs
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

version=$1
args=${@#$1}

usage() {
cat <<EOM
Usage: ${0##*/} [VERSION] [FILE1] [FILE2] ...
Where VERSION should be the kernel version and FILE the config file(s).
Example: ${0##*/} 4.14 /usr/src/linux-4.14/.config

To see a list of available versions, look at the files under the 'versions'
directory.
EOM
}

err() {
    printf '%sError:%s %s\n' \
            "$(tput setaf 1)" \
            "$(tput sgr0)" \
            "$1"
    false
}

check() {
    if [ ! -f versions/$version ]; then
        err "Version $version not available"
    fi

    if [[ $args != "" ]]; then
        for f in $args; do
            [ -f $f ] || err "$f does not exist"
        done
    else
        err 'No config files provided'
    fi
}

deblob() {
    local configs=$(grep -v ^# versions/$version)
    for c in $configs; do
        sed -i "s|$c=|# $c is not set|" $1
    done
}

main(){
    check
	for i in $@; do
        echo "Modifying $i"
        deblob $i
    done
}

if [[ $# -lt 1 ]]; then
    usage
else
    main $args
fi