# bash completion for vncviewer

have vncviewer &&
_vncviewer_bootstrap()
{
    local fname
    case $(_realcommand vncviewer) in
        *xvnc4viewer)      fname=_xvnc4viewer    ;;
        *tightvncviewer)   fname=_tightvncviewer ;;
        *)                 fname=_known_hosts    ;;
    esac

    # Install real completion for subsequent completions
    complete -F $fname vncviewer
    $fname  # Generate completions once for now
    unset -f _vncviewer_bootstrap
} &&
complete -F _vncviewer_bootstrap vncviewer

have tightvncviewer &&
_tightvncviewer()
{
    local cur prev

    COMPREPLY=()
    _get_comp_words_by_ref cur prev

    case $prev in
        -passwd)
            _filedir
            return 0
            ;;
        -encodings)
            COMPREPLY=( $( compgen -W 'copyrect tight hextile zlib \
                corre rre raw' -- "$cur" ) )
            return 0
            ;;
        -via)
            _known_hosts_real "$cur"
            return 0
            ;;
    esac


    if [[ "$cur" == -* ]]; then
        COMPREPLY=( $( compgen -W '-help -listen -via -shared -noshared\
            -viewonly -fullscreen -noraiseonbeep -passwd -encodings\
            -bgr233 -owncmap -truecolour -truecolor -depth \
            -compresslevel -quality -nojpeg -nocursorshape \
            -x11cursor' -- $cur ) )
    else
        _known_hosts_real "$cur"
    fi
} &&
complete -F _tightvncviewer tightvncviewer


# NOTE: - VNC Viewer options are case insensitive.
#         Preferred case is taken from -help.
#       - Both single dash (-) and double dash (--) are allowed as option prefix
have xvnc4viewer &&
_xvnc4viewer()
{
    local cur prev

    COMPREPLY=()
    _get_comp_words_by_ref cur prev

    # Convert double dash to single dash
    case ${prev/#--/-} in
        # -passwd, -PasswordFile
        -[pP][aA][sS][sS][wW][dD]|-[pP][aA][sS][sS][wW][oO][rR][dD][fF][iI][lL][eE])
            _filedir
            return 0
            ;;
        # -PreferredEncoding
        -[pP][rR][eE][fF][eE][rR][rR][eE][dD][eE][nN][cC][oO][dD][iI][nN][gG])
            COMPREPLY=( $( compgen -W 'zrle hextile raw' -- $cur ) )
            return 0
            ;;
        # -via
        -[vV][iI][aA])
            _known_hosts_real "$cur"
            return 0
            ;;
    esac

    if [[ "$cur" == -* || "$cur" == --* ]]; then
        # Default to vncviewer camelcase options, see `vncviewer -help'
        local dash options=( \
            AcceptClipboard AutoSelect DebugDelay display \
            DotWhenNoCursor FullColor FullColour FullScreen \
            geometry help listen Log \
            LowColourLevel MenuKey name Parent \
            passwd PasswordFile PointerEventInterval PreferredEncoding \
            SendClipboard SendPrimary Shared UseLocalCursor \
            via ViewOnly WMDecorationHeight WMDecorationWidth \
            ZlibLevel \
        )
        [[ "$cur" == --* ]] && dash=-- || dash=-
        # Is a `nocasematch' variable available (bash > v3.1)?
        if shopt nocasematch 2> /dev/null | command grep -q ^nocasematch; then
            # Variable `nocasematch' is available
            # Use vncviewer camelcase options
            local option oldNoCaseMatch=$(shopt -p nocasematch)
            shopt -s nocasematch
            COMPREPLY=( $( for option in "${options[@]}"; do
                [[ $dash$option == "$cur"* ]] && printf '%s\n' $dash$option
            done ) )
            eval "$oldNoCaseMatch" 2> /dev/null
        else
            # Variable 'nocasematch' isn't available;
            # Convert completions to lowercase
            COMPREPLY=( $( compgen -W \
                "$( tr [:upper:] [:lower:] <<<${options[@]/#/$dash} )" \
                -- "$( tr [:upper:] [:lower:] <<<"$cur" )" ) )
        fi
    else
        _known_hosts_real "$cur"
    fi
} &&
complete -F _xvnc4viewer xvnc4viewer

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