uirdinsert

#!/bin/bash 
### Add, replace, remove files from UIRD
### $0 UIRD.cpio.xz                       - interactive mode
### $0 UIRD.cpio.xz myfile::/usr/bin/file - add or replace /usr/bin/file in UIRD by myfile
### $0 UIRD.cpio.xz ::/usr/bin/file       - remove /usr/bin/file
### $0 UIRD.cpio.xz ::/usr/bin/file myfile::/usr/bin/file - more than one actions

unset UIRD
unset INTERACTIVE
cmdline="$@"

echo_exit() {
        echo -e "$1"  
        echo "exitcode: $2"
        exit $2 
}

run (){
    echo "$@"
    $@
}

[ "$1" ] || cat $0 |egrep '^### '
[ "$1" ] || exit
[ -f "$1" ] || echo_exit "$1 not a filem must be uird" ${LINENO}
UIRD="$(realpath $1)"
shift
[ "$1" ] || INTERACTIVE='yes'

TMPD=$(mktemp -d)
trap "rm -rf $TMPD" EXIT
pushd $TMPD >/dev/null
xz -dc $UIRD  | cpio -i -d -H newc --no-absolute-filenames
popd >/dev/null

NEWUIRD=${UIRD}.$(date +%M%S)

if [ "$INTERACTIVE" ] ; then 
    echo -e "\n\t$UIRD 
unpacket to: 
\t$TMPD
modify and push ENTER to pack it to: 
\t$NEWUIRD
"
    read qqq
else
    while [ $1 ] ; do
        IF=$(realpath $(echo $1 |cut -f1 -d ':') 2>/dev/null)
        OF=$(echo $1 |cut -f3 -d ':')
        if [ "$IF" ] ; then
            mkdir -p "${TMPD}/$(dirname $OF)"
            if [ -d "$IF" ] ; then
                run cp -fax "$IF" ${TMPD}${OF}/
            elif [ -f "$IF" ] ; then
                run cp -fp "$IF" ${TMPD}${OF}
            fi
        else
            if [ -d "$OF" ] ; then
                run rm -rf ${TMPD}${OF}
            elif [ -f "$OF" ] ; then
                run rm -f ${TMPD}${OF}
            fi
        fi
        shift
        unset IF OF
    done
fi

echo "Modified: $(date -R)" >> ${TMPD}/uird_version
echo "$0 $cmdline" >> ${TMPD}/uird_version

pushd $TMPD >/dev/null
find . |cpio -o -H newc |xz --check=crc32 --x86 --lzma2 > "$NEWUIRD"
popd >/dev/null
echo "$NEWUIRD"