#!/bin/bash
#
# This file is part of AtomVM.
#
# Copyright 2019 Fred Dushin <fred@dushin.net>
#
# 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.
#
# SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later
#

set -e

ROOT_DIR=$(cd $(dirname $0)/../.. && pwd)

function clean_file {
    file=$1
    cat ${file} | sed "s/[ ]*$//g" | sed -e '$a\' > ${file}.cleaned
    if [ -n "$(diff ${file} ${file}.cleaned)" ]; then
        cat ${file}.cleaned > ${file}
        echo "Cleaned ${file}"
    fi
    rm ${file}.cleaned
}

nargs=$#
if [ "${nargs}" -gt 0 ]; then
    files=$@
else
    files=$(git ls-files)
fi

cd ${ROOT_DIR}
for f in ${files}; do
    case $f in
        *.sh | *.erl | *.c | *.h | *.txt)
            clean_file $f
            ;;
    esac
done

