# 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 display completion for remote hosts
            return
            ;;
    esac

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

# ex: filetype=sh