msg() {
    # check if messages are to be printed using color
    unset ALL_OFF BOLD BLUE GREEN RED YELLOW
    # prefer terminal safe colored and bold text when tput is supported
    if tput setaf 0 &>/dev/null; then
        ALL_OFF="$(tput sgr0)"
        BOLD="$(tput bold)"
        BLUE="${BOLD}$(tput setaf 4)"
        GREEN="${BOLD}$(tput setaf 2)"
        RED="${BOLD}$(tput setaf 1)"
        YELLOW="${BOLD}$(tput setaf 3)"
    else
        ALL_OFF="\e[0m"
        BOLD="\e[1m"
        BLUE="${BOLD}\e[34m"
        GREEN="${BOLD}\e[32m"
        RED="${BOLD}\e[31m"
        YELLOW="${BOLD}\e[33m"
    fi

    local mesg=$1; shift
    printf "${RED}  ->${ALL_OFF}${BOLD} ${mesg}${ALL_OFF}\n" "$@" >&2
}

license() {
    msg "By installing this software you agree to the term of the Segger license."
    msg "See /usr/share/licenses/jlink-software-and-documentation/LicenseIncGUI.txt"
    msg "SEGGER J-Link software may only be used with original SEGGER products and authorized OEM products."
    msg "The use of the licensed software to operate SEGGER product clones is prohibited and illegal."
}

pre_install(){
    license
}

pre_upgrade() {
    license
}

post_install() {
    udevadm control --reload
}