my dwm status bar (in both Io and Ruby)

dwm-bar.io

#!/usr/bin/env io
date := Date now asString("%Y-%m-%d %H:%M:%S")

wifi := File clone openForReading("/proc/net/wireless") readLines \
  at(2) split at(5) removeAt(2) asString

mpd := method(
  File clone openForReading("/home/simon/.mpd/state") foreachLine(i, line,
    parts := line split(":")
    if(parts at(0) == "state",   state := parts at(1))
    if(parts at(0) == "current", current := parts at(1) lstrip)
    if(slotNames contains("current") and parts at(0) == current,
      return parts at(1))
  )
)

"[M: #{mpd}] [W: #{wifi}] ||| #{date}]" interpolate print

dwm-bar.rb

#!/usr/bin/env ruby
require "librmpd"

def date
  Time.now.strftime("%Y-%m-%d %H:%M")
end

def mpd
  song = MPD.new.tap { |mpd| mpd.connect }.current_song
  return "NA" unless song

  if song.artist && song.album && song.title
    "#{song.artist} - #{song.album} - #{song.title}"
  else
    song.file[50..song.file.size]
  end
end

def battery
  state = File.readlines("/proc/acpi/battery/BAT0/state").map { |line|
    line.gsub(/.*:\s*/, "").chomp }
  info  = File.readlines("/proc/acpi/battery/BAT0/info").map  { |line|
    line.gsub(/.*:\s*/, "").chomp }
  percentage = ((state[4].chomp("mAh").to_f /
    info[2].chomp("mAh").to_f ) * 100).to_i
  status = state[2]

  indicator = case status
    when "charged"      then "="
    when "charging"     then "^"
    when "discharging"  then "v"
    else ""
  end

  if status == "discharging" && percentage <= 10
    xmessage = "xmessage -butt xmessage -buttons quit:0 -default quit -file -"
    IO.popen(xmessage, "w") { |io| io << "ZOMFGWTF CRITICAL BATTERY" }
  end

  "#{indicator}#{percentage}%"
end

def wifi
  info = File.readlines("/proc/net/wireless")
  info[2][/wlan0: \d{4}\s*(\d+)\./] && $1
rescue
  0
end

puts "[M: #{mpd}] | [B: #{battery}] | [W: #{wifi}] ||| #{date}"