_shared_lib

#
# https://misc.flogisoft.com/bash/tip_colors_and_formatting
#
TERM_NORMAL='\e[0m'
TERM_BOLD='\e[1m'
TERM_DIM='\e[2m'
TERM_UNDERLINE='\e[4m'
TERM_BLINK='\e[5m'

TERM_FOREGROUND_DEFAULT='\e[39m'
TERM_FOREGROUND_RED='\e[31m'
TERM_FOREGROUND_GREEN='\e[32m'
TERM_FOREGROUND_YELLOW='\e[33m'
TERM_FOREGROUND_BLUE='\e[34m'
TERM_FOREGROUND_MAGENTA='\e[35m'
TERM_FOREGROUND_CYAN='\e[36m'

TERM_FOREGROUND_NORMAL=$TERM_FOREGROUND_DEFAULT
TERM_FOREGROUND_WARNING=$TERM_FOREGROUND_YELLOW
TERM_FOREGROUND_ERROR=$TERM_FOREGROUND_RED

#
# show help
#

function showhelp () {
    desc=$1; shift
    optline=$1; shift
    opttext=$1; shift
    
    cat <<END
$_progname: $desc
Version: $_ver
Author: $_author

$_progname $optline

$opttext
END
}

#
# echo with verbosity threshold
#

function vecho () {
    local level=${1:-0}

    (( _verbose > level )) && {
        cat - | while IFS= read -r line; do
            echo -e $line
        done
    }
}

#
# Exit with error code and message.
#

function die () {
    >/dev/stderr cat -
    exit ${1:-1}
}

#
# Parsing command-line arguments.
#

function my_getopt () {
    short_opt="${1}hv"; shift
    long_opt="${1},help,verbose"; shift
    cont=$1; shift # name to a function to continue processing options.

    desc=$1; shift

    optline=$(cat <<END
$1
    [-h|--help] [-v|--verbose]
    [--] [<additional args>]
END
); shift

    opttext=$(cat <<END
$1
-h	--help			Help, and you are reading it.
-v	--verbose		Increase verbosity for each use.	
END
); shift

    # !!! _getopt is intentionally LEAKED out of this function.
    _getopt=$(getopt -n "$_progname" -o "$short_opt" -l "$long_opt" -- "$@")

    if [[ $? -ne 0 ]]; then
        showhelp "$desc" "$optline" "$opttext"
        die 1 <<END
Error in parsing options.
END
    fi

    eval set -- "$_getopt"

    local n_shift=0

    while true; do
        case "$1" in
            -h|--help)
                showhelp "$desc" "$optline" "$opttext"
                shift; ((n_shift++))
                exit 0
                ;;
            -v|--verbose)
                ((_verbose++))
                shift; ((n_shift++))
                continue
                ;;
            --)
                shift; ((n_shift++))
                break
                ;;
        esac

        "$cont" "$@" # return the number of shifts to do next
        ret=$?
        shift $ret; ((n_shift+=ret))
    done

    return $n_shift
}

#
# dump parameters (for sanity check)
#

function dumpparam () {
    cat -
    echo
    for name in LKHH_DIR LKHH_BIN LKHH_ARENA LKHH_IMAGE LKHH_LINUX; do
        echo "export $name=$(echo $(eval "echo \${$name}"))"
    done
}