# ip(8) completion                                         -*- shell-script -*-

_iproute2_etc()
{
    COMPREPLY+=( $(compgen -W \
        "$(awk '!/#/ { print $2 }' /etc/iproute2/$1 2>/dev/null)" \
        -- "$cur") )
}

_ip()
{
    local cur prev words cword
    _init_completion || return

    case $prev in
        -V|-Version|-rc|-rcvbuf)
            return
            ;;
        -f|-family)
            COMPREPLY=( $(compgen -W 'inet inet6 ipx dnet link' -- "$cur") )
            return
            ;;
        -b|-batch)
            _filedir
            return
            ;;
        -force)
            COMPREPLY=( $(compgen -W '-batch' -- "$cur") )
            return
            ;;
    esac

    local subcword cmd subcmd
    for (( subcword=1; subcword < ${#words[@]}-1; subcword++ )); do
        [[ ${words[subcword]} == -b?(atch) ]] && return
        [[ -n $cmd ]] && subcmd=${words[subcword]} && break
        [[ ${words[subcword]} != -* && \
                ${words[subcword-1]} != -@(f?(amily)|rc?(vbuf)) ]] && \
            cmd=${words[subcword]}
    done

    if [[ -z $cmd ]]; then
        case $cur in
            -*)
                local c="-Version -statistics -details -resolve -family
                    -oneline -timestamp -batch -rcvbuf"
                [[ $cword -eq 1 ]] && c+=" -force"
                COMPREPLY=( $(compgen -W "$c" -- "$cur") )
                return
                ;;
            *)
                COMPREPLY=( $(compgen -W "help $($1 help 2>&1 | command sed -e \
                    '/OBJECT := /,/}/!d' -e \
                    's/.*{//' -e \
                    's/}.*//' -e \
                    's/|//g')" -- "$cur") )
                return
                ;;
        esac
    fi

    [[ $subcmd == help ]] && return

    case $cmd in
        l|link)
            case $subcmd in
                add)
                    # TODO
                    ;;
                delete)
                    case $(($cword-$subcword)) in
                        1)
                            _available_interfaces
                            ;;
                        2)
                            COMPREPLY=( $(compgen -W 'type' -- "$cur") )
                            ;;
                        3)
                            [[ $prev == type ]] && \
                                COMPREPLY=( $(compgen -W 'vlan veth vcan dummy
                                    ifb macvlan can' -- "$cur") )
                            ;;
                    esac
                    ;;
                set)
                    if [[ $cword-$subcword -eq 1 ]]; then
                        _available_interfaces
                    else
                        case $prev in
                            arp|dynamic|multicast|allmulticast|promisc|\
                            trailers)
                                COMPREPLY=( $(compgen -W 'on off' -- "$cur") )
                                ;;
                            txqueuelen|name|address|broadcast|mtu|netns|alias)
                                ;;
                            *)
                                local c="arp dynamic multicast allmulticast
                                    promisc trailers txqueuelen name address
                                    broadcast mtu netns alias"
                                [[ $prev != @(up|down) ]] && c+=" up down"
                                COMPREPLY=( $(compgen -W "$c" -- "$cur") )
                                ;;
                        esac
                    fi
                    ;;
                show)
                    if [[ $cword -eq $subcword+1 ]]; then
                        _available_interfaces
                        COMPREPLY+=( $(compgen -W 'dev group up' -- "$cur") )
                    elif [[ $prev == dev ]]; then
                        _available_interfaces
                    elif [[ $prev == group ]]; then
                        _iproute2_etc group
                    fi
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help add delete set show' \
                        -- "$cur") )
                    ;;
            esac
            ;;

        a|addr|address)
            case $subcmd in
                add|change|replace)
                    if [[ $prev == dev ]]; then
                        _available_interfaces
                    elif [[ $prev == scope ]]; then
                        _iproute2_etc rt_scopes
                    else
                        : # TODO
                    fi
                    ;;
                del)
                    if [[ $prev == dev ]]; then
                        _available_interfaces
                    elif [[ $prev == scope ]]; then
                        _iproute2_etc rt_scopes
                    else
                        : # TODO
                    fi
                    ;;
                show|flush)
                    if [[ $cword -eq $subcword+1 ]]; then
                        _available_interfaces
                        COMPREPLY+=( $(compgen -W 'dev scope to label dynamic
                            permanent tentative deprecated dadfailed temporary
                            primary secondary up' -- "$cur") )
                    elif [[ $prev == dev ]]; then
                        _available_interfaces
                    elif [[ $prev == scope ]]; then
                        _iproute2_etc rt_scopes
                    fi
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help add change replace del
                            show flush' -- "$cur") )
                    ;;
            esac
            ;;

        addrlabel)
            case $subcmd in
                list|add|del|flush)
                    if [[ $prev == dev ]]; then
                        _available_interfaces
                    else
                        : # TODO
                    fi
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help list add del flush' \
                        -- "$cur") )
                    ;;
            esac
            ;;

        route)
            case $subcmd in
                list|flush)
                    if [[ $prev == proto ]]; then
                        _iproute2_etc rt_protos
                    else
                        : # TODO
                    fi
                    ;;
                get)
                    # TODO
                    ;;
                add|del|change|append|replace|monitor)
                    # TODO
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help list flush get add del
                            change append replace monitor' -- "$cur") )
                    ;;
            esac
            ;;

        rule)
            case $subcmd in
                add|del)
                    # TODO
                    ;;
                flush|show|list|lst)
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help list add del flush' \
                        -- "$cur") )
                    ;;
            esac
            ;;

        neigh)
            case $subcmd in
                add|del|change|replace)
                    # TODO
                    ;;
                show|flush)
                    # TODO
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help add del change replace
                            show flush' -- "$cur") )
                    ;;
            esac
            ;;

        ntable)
            case $subcmd in
                change)
                    # TODO
                    ;;
                show)
                    # TODO
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help change show' \
                        -- "$cur") )
                    ;;
            esac
            ;;

        tunnel)
            case $subcmd in
                show)
                    ;;
                add|change|del|prl|6rd)
                    # TODO
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help add change del show prl
                            6rd' -- "$cur") )
                    ;;
            esac
            ;;

        maddr)
            case $subcmd in
                add|del)
                    # TODO
                    ;;
                show)
                    if [[ $cword -eq $subcword+1 || $prev == dev ]]; then
                        _available_interfaces
                        [[ $prev != dev ]] && \
                            COMPREPLY=( $(compgen -W '${COMPREPLY[@]} dev' \
                            -- "$cur") )
                    fi
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help add del show' \
                        -- "$cur") )
                    ;;
            esac
            ;;

        mroute)
            case $subcmd in
                show)
                    # TODO
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help show' -- "$cur") )
                    ;;
            esac
            ;;

        monitor)
            case $subcmd in
                all) ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'help all' -- "$cur") )
                    ;;
            esac
            ;;

        xfrm)
            case $subcmd in
                state|policy|monitor)
                    # TODO
                    ;;
                *)
                    [[ $cword -eq $subcword ]] && \
                        COMPREPLY=( $(compgen -W 'state policy monitor' \
                        -- "$cur") )
                    ;;
            esac
            ;;
    esac
} &&
complete -F _ip ip

# ex: filetype=sh