# bash completion for xgamma(1)                            -*- shell-script -*-

proc _xgamma {
    local cur prev words cword
    _init_completion -n : || return

    case (prev) {
        -screen {
            local screens=$( xrandr --query 2>/dev/null | sed -n \
                '/^Screen /s|^Screen \{1,\}\(.*\):.*$|\1|p' 2>/dev/null )
            setvar COMPREPLY = ''( $( compgen -W "$screens" -- "$cur" ) )
            return
            }
        -gamma|-rgamma|-ggamma|-bgamma {
            # expect f.f
            if [[ $cur && "$cur" != *.* ]] {
                setvar COMPREPLY = ''( . )
            }
            setvar COMPREPLY = ''( $( compgen -W "{0..9}" ) )
            compopt -o nospace
            return
            }
        -display {
            # expect hostname:displaynumber.screennumber
            if [[ "$cur" == :* && "$cur" != :*.* ]] {
                # FIXME: where to get local display numbers?
                local display=${cur#:}
                setvar COMPREPLY = ''( $( compgen -W "${display:-0}." ) )
                compopt -o nospace
            } elif [[ "$cur" == :*.* ]] {
                # local screen numbers
                local t screens=$( xrandr --query 2>/dev/null | sed -ne \
                    '/^Screen /s|^Screen \{1,\}\(.*\):.*$|\1|p' 2>/dev/null )
                setvar t = "${cur#:}"
                setvar COMPREPLY = ''( $( compgen -P "${t%.*}." -W "$screens" -- \
                    "${cur##*.}" ) )
            } elif [[ "$cur" != *:* ]] {
                # complete hostnames
                _known_hosts_real -c $cur
                if [[ ! $cur ]] {
                    setvar COMPREPLY = ''( : )
                }
                compopt -o nospace
            }
            # no dislpay completion for remote hosts
            return
            }
    }

    if [[ "$cur" == -* ]] {
        setvar COMPREPLY = ''( $( compgen -W '$( _parse_help "$1" -help )' -- "$cur" ) )
        [[ $COMPREPLY == *= ]] && compopt -o nospace
        [[ $COMPREPLY ]] && return
    }
} && complete -F _xgamma xgamma

# ex: ts=4 sw=4 et filetype=sh