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timwingfield/zsh_battery_icon.rb

Created September 5, 2011 19:04
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zsh script to set an icon on my prompt based on battery charge/status
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zsh_battery_icon.rb
#!/usr/bin/env ruby
# encoding: UTF-8
# example for getting the battery settings https://gist.github.com/176025
info = `ioreg -rc "AppleSmartBattery"`
battery = %w(ExternalConnected CurrentCapacity MaxCapacity IsCharging).inject({}) do |hash, property|
hash[property.to_sym] = info[/"#{property}" = (.*)$/, 1]; hash
end
percentage = (battery[:CurrentCapacity].to_f / battery[:MaxCapacity].to_f * 100).to_i
isCharging = battery[:IsCharging] == "Yes"
isPluggedIn = battery[:ExternalConnected] == "Yes"
green = "%{%}"
yellow = "%{%}"
red = "%{%}"
reset = "%{%}"
if percentage > 50
color = green
elsif percentage > 20
color = yellow
else
color = red
end
if isPluggedIn and percentage > 95
color = reset
end
output = color + ""
if isCharging
output += yellow + "⚡"
end
puts output += reset
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