btest-progress

#! /usr/bin/env bash

function usage {
    cat <<EOF >&2
usage: $(basename "$0") [-q] [-T] <message>

         -q: Do not print message to standard output or standard error.
         -T: Do not include timestamp on standard error message.

EOF
    exit 1
}

### Main.

quiet=0
time=1

while getopts ":qT" opt; do
    case $opt in
        q)
            quiet=1
            shift
            ;;
        T)
            time=0
            shift
            ;;
        *)
            usage
            ;;
    esac
done

test $# != 0 || usage

msg="[btest] -- $*"

if [ "${quiet}" -eq 0 ]; then
    echo "${msg}"
    if [ "${time}" -eq 0 ]; then
        echo "${msg}" >&2
    else
        echo "${msg} -- $(date -u +'%Y-%m-%dT%H:%M:%S.%3NZ') " >&2
    fi
fi

TIME=$(python3 -c 'import time; print(time.time_ns())')
file=$(mktemp ".progress.${TIME}.XXXXXX") || exit 1
echo "$@" >>"${file}"