configure_os

# Determine the current OS

local SH_OS_TYPE SH_OS_FLAVOR SH_OS_DISTRO SH_OS_DISTRO_NUM SH_OS_RELEASE

if [[ $OSTYPE == darwin* ]]; then
    # OS X
    SH_OS_TYPE='OSX'
    SH_OS_FLAVOR='OSX'
    SH_OS_RELEASE=`type sw_vers >/dev/null 2>&1 && sw_vers -productVersion`
    SH_OS_DISTRO_NUM=`uname -r | tr "." "\n" | head -n 1`
    if [[ $OSTYPE == darwin24* ]]; then
        SH_OS_DISTRO='Sequoia'
    elif [[ $OSTYPE == darwin23* ]]; then
        SH_OS_DISTRO='Sonoma'
    elif [[ $OSTYPE == darwin22* ]]; then
        SH_OS_DISTRO='Ventura'
    elif [[ $OSTYPE == darwin21.1* ]]; then
        SH_OS_DISTRO='Ventura'
    elif [[ $OSTYPE == darwin21* ]]; then
        SH_OS_DISTRO='Monterey'
    elif [[ $OSTYPE == darwin20* ]]; then
        SH_OS_DISTRO='Monterey'
    elif [[ $OSTYPE == darwin19.4* ]]; then
        SH_OS_DISTRO='Monterey'
    elif [[ $OSTYPE == darwin19.2* ]]; then
        SH_OS_DISTRO='Big Sur'
    elif [[ $OSTYPE == darwin19* ]]; then
        SH_OS_DISTRO='Catalina'
    elif [[ $OSTYPE == darwin18* ]]; then
        SH_OS_DISTRO='Mojave'
    elif [[ $OSTYPE == darwin17* ]]; then
        SH_OS_DISTRO='High Sierra'
    elif [[ $OSTYPE == darwin16* ]]; then
        SH_OS_DISTRO='Sierra'
    elif [[ $OSTYPE == darwin15* ]]; then
        SH_OS_DISTRO='El Capitan'
    elif [[ $OSTYPE == darwin14* ]]; then
        SH_OS_DISTRO='Yosemite'
    elif [[ $OSTYPE == darwin13* ]]; then
        SH_OS_DISTRO='Mavericks'
    elif [[ $OSTYPE == darwin12* ]]; then
        SH_OS_DISTRO='Mountain Lion'
    elif [[ $OSTYPE == darwin11* ]]; then
        SH_OS_DISTRO='Lion'
    elif [[ $OSTYPE == darwin10* ]]; then
        SH_OS_DISTRO='Snow Leopard'
    else
        # How to get the distro
        SH_OS_DISTRO='Unknown'
    fi
elif [[ $OSTYPE == linux-gnu ]]; then
    # Linux
    SH_OS_TYPE='Linux'
    SH_OS_FLAVOR='Linux'
    if [[ -n '$WSL_DISTRO_NAME' ]]; then
        SH_OS_FLAVOR='WSL'
    fi
    if [[ -f /etc/lsb-release ]] || type lsb_release >/dev/null 2>&1 ; then
        SH_OS_DISTRO=`type lsb_release >/dev/null 2>&1 && lsb_release -i -s`
        SH_OS_RELEASE=`type lsb_release >/dev/null 2>&1 && lsb_release -r -s`
    elif [[ -f /etc/debian_version ]]; then
        # Debian/Ubuntu
        # How to distinguish Debian vs. Ubuntu?
        SH_OS_DISTRO='Debian'
        # How to get the release
        SH_OS_RELEASE=0
    elif [[ -f /etc/centos-release ]]; then
        # CentOS 6+
        SH_OS_DISTRO='CentOS'
        SH_OS_RELEASE=`cat /etc/centos-release >/dev/null 2>&1 && cat /etc/centos-release | sed s/.\*release\ // | sed s/\ .\*//`
    elif [[ -f /etc/redhat-release ]]; then
        # RedHat
        SH_OS_DISTRO='RedHat'
        SH_OS_RELEASE=`cat /etc/redhat-release >/dev/null 2>&1 && cat /etc/redhat-release | sed s/.\*release\ // | sed s/\ .\*//`
    elif [[ -f /etc/issue ]]; then
        # Yocto
        SH_OS_DISTRO='Yocto'
        SH_OS_RELEASE=`cat /etc/issue >/dev/null 2>&1 && cat /etc/issue | sed s/\ \(Yocto.\*//`
    else
        # How to get the distro
        SH_OS_DISTRO='Unknown'
        # How to get the release
        SH_OS_RELEASE=0
    fi
elif [[ $OSTYPE == linux-gnueabi* ]]; then
    # Linux Embedded
    SH_OS_TYPE='Linux'
    SH_OS_FLAVOR='Embedded'
    if [[ -f /etc/debian_version ]]; then
        if [[ -f /etc/rpi-issue ]]; then
            # Raspbian
            SH_OS_DISTRO='Raspbian'
        else
            # Debian
            SH_OS_DISTRO='Debian'
        fi
        SH_OS_RELEASE=`cat /etc/debian_version >/dev/null 2>&1 && cat /etc/debian_version`
    else
        # How to get the distro
        SH_OS_DISTRO='Unknown'
        # How to get the release
        SH_OS_RELEASE=0
    fi
elif [[ '$OS' == Windows* ]]; then
    # Windows Msys/MinGW (who uses these anymore?)
    SH_OS_TYPE='Windows'
    SH_OS_FLAVOR='Emulated'
    if [[ '$OSTYPE' == msys* ]]; then
        # Msys
        SH_OS_DISTRO='Msys'
        SH_OS_RELEASE=`uname -s | tr "-" "\n" | tail -n 1`
    elif [[ '$MSYSTEM' == MSYS* ]]; then
        # Msys
        SH_OS_DISTRO='Msys'
        SH_OS_RELEASE=`uname -s | tr "-" "\n" | tail -n 1`
    elif [[ '$MSYSTEM' == MINGW* ]]; then
        # MinGW
        SH_OS_DISTRO='Msys'
        SH_OS_RELEASE=`uname -s | tr "-" "\n" | tail -n 1`
    else
        # How to get the distro
        SH_OS_DISTRO='Unknown'
        # How to get the release
        SH_OS_RELEASE=0
    fi
else
    # What the heck are we running on???
    SH_OS_TYPE='Unknown'
    SH_OS_FLAVOR='Unknown'
    SH_OS_DISTRO='Unknown'
    SH_OS_RELEASE=0
fi