#!/bin/sh

_sep=':'

ifconfig wlan | { while read _line; do

    case ${_line} in

      status*)

       [[ ${_line} != "status: active" ]] && exit
      ;;

      ieee80211:*)

        _sid=${_line%% chan*}
        _sid=${_sid##*nwid }
        _sid=${_sid##*join }

        _sig=${_line%%\%*}
        _sig=${_sig##* }
      ;;

      inet\ *)

        _ip=${_line##*inet }
        _ip=${_ip%% *}
      ;;
    esac
  done

  for _arg in $@; do

    case ${_arg} in

      sig)
        printf "%s" ${_count:+\ ${_sep}\ }
        printf "%3.3s" ${_sig}
        [[ ${#@} -gt 1 ]] && printf "%s" "%"
        _count=1
        ;;
      sid)
        printf "%s" ${_count:+\ ${_sep}\ }
        printf "%s" ${_sid}
        _count=1
        ;;
       ip)
        printf "%s" ${_count:+\ ${_sep}\ }
        printf "%s" ${_ip}
        _count=1
        ;;
    esac
  done
}