decisiontab

function decision_exec() {
    "${@}"
}

function decision_init() {
    __DECISIONTAB_CONDS=("${@}")
    __DECISIONTAB_RULES=()
}

function decision_make() {

    function test_rule() {
        for i in $(seq 0 $((${#__DECISIONTAB_CONDS[@]} - 1)))
        do
            case "${@:$((${i} + 1)):1}" in
                -)
                    continue
                    ;;
                "${!__DECISIONTAB_CONDS[${i}]}")
                    continue
                    ;;
                *)
                    return 1
                    ;;
            esac
        done
        return 0
    }

    for encoded_rule in "${__DECISIONTAB_RULES[@]}"
    do
        local rule=(${encoded_rule}) # TODO consider spaces
        if test_rule "${rule[@]}"
        then
            local cmd=(${rule[@]:${#__DECISIONTAB_CONDS[@]}})
            if [ ${#cmd[@]} -gt 0 ]
            then
                decision_exec "${cmd[@]}"
                return ${?}
            else
                return 0
            fi
        fi
    done
    return 1
}

function decision_rule() {
    __DECISIONTAB_RULES+=("${*}") # TODO consider spaces
}