function get_ci_tools_dir {
    local tools_dir=$(dirname "${BASH_SOURCE[0]}")
    realpath "${tools_dir}"
}


function realpath {
    ${REALPATH} "$@"
}


function get_realpath {
    (
        export PATH=${CI_TOOLS_ORIGINAL_PATH:-${PATH}}
        local tools_dir=$(dirname "${BASH_SOURCE[0]}")
        local python=$(which python3 || which python2 || wich python)
        if [ -x "${python}" ] && "${python}" --version > /dev/null; then
            local script="${tools_dir}/realpath.py"
            local script=$("${python}" "${script}" "${script}")
            echo "${python}" "${script}"
        else
            echo "Python command not found!" 1>&2
            exit 1
        fi
    )
}


export REALPATH=${REALPATH:-$(get_realpath)}
export CI_TOOLS_DIR=${CI_TOOLS_DIR:-$(get_ci_tools_dir)}
export CI_TOOLS_ORIGINAL_PATH=${CI_TOOLS_ORIGINAL_PATH:-${PATH}}
export PATH=${CI_TOOLS_DIR}:${PATH}
export PYTHONWARNINGS=${PYTHONWARNINGS:-ignore}