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

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

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

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

# ex: filetype=sh