#!/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)
        set -A WIFI ${WIFI[*]} ${WIFI:+${_sep}} ${_sig}
        ;;
      sid)
        set -A WIFI ${WIFI[*]} ${WIFI:+${_sep}} ${_sid}
        ;;
       ip)
        set -A WIFI ${WIFI[*]} ${WIFI:+${_sep}} ${_ip}
        ;;
    esac
  done
  print ${WIFI[*]}
}