cleanup_source

#!/bin/bash
#-*-bash-*-#############################################################################################################
# Copyright 2022, Inesonic, LLC
#
# GNU Public License, Version 3:
#   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
#   <https://www.gnu.org/licenses/>.
########################################################################################################################
# Small shell script the identifies files with tabs and/or trailing whitespace and converts tabs to spaces and removes
# the trailing whitespace.
#

TEMPORARY_DIRECTORY=$(mktemp -d "${TMPDIR:-/tmp/}$(basename $0).XXXXXXXX")
FILE_LIST=${TEMPORARY_DIRECTORY}/files_to_scrub
SORTED_FILE_LIST=${TEMPORARY_DIRECTORY}/sorted_files_to_scrub
WORK_FILE=${TEMPORARY_DIRECTORY}/in_work

grep -l --recursive -P '\t' * >${FILE_LIST}
grep -l --recursive -P '\s+$' * >>${FILE_LIST}
cat ${FILE_LIST} | grep -v 'vendor/' | sort | uniq >${SORTED_FILE_LIST}

for FILE in $(cat ${SORTED_FILE_LIST});
do
    MIME_TYPE=$(file --mime "${FILE}" | sed -e 's/^[^:]*: *//' | sed -e 's/;.*//')
    if echo ${MIME_TYPE} | grep -q -e '^text/.*';
    then
        expand --tabs=4 <"${FILE}" | sed -e 's/\s+$//' >${WORK_FILE}
        mv ${WORK_FILE} "${FILE}"
        echo Processed ${FILE}
    fi
done