#!/bin/bash

set -Cu

based=$(dirname $0)/..
pname=$(basename $0)
stime=$(date +%Y%m%d%H%M%S%Z)

# exec 3>&2
logd=$based/log
exec 3>&2 2>$logd/$pname.$stime.$$.log
set -vx

MSG() {
    echo "$pname $stime $(date +%Y%m%d%H%M%S%Z) $@"	>&3
}

tmpd=$(mktemp -d --suffix=".$pname.$stime.$$")/
if [ 0 -ne "$?" ] ; then
    MSG FATAL can not make temporally directory.
    exit 1
fi

trap 'BEFORE_EXIT' EXIT
BEFORE_EXIT()	{
    rm -rf $tmpd
}

IS_ERROR() {
    echo ${PIPESTATUS[@]}	|
	tr ' \t' '\n'	|
	grep -qv '^0$'
}
################################################################

MSG INFO This is a message.

true
IS_ERROR && MSG FATAL unreachable && exit 1

################################################################
exit 0