blink1_notifier.rb

# -*- coding: utf-8 -*-
# simple blink(1) earthquake.gem plugin
#

Earthquake.init do

  once do
    class Blink1Notify

      #
      # xterm colors
      #
      # ANSI escape code - Wikipedia, the free encyclopedia :
      # http://en.wikipedia.org/wiki/ANSI_escape_code#Colors
      #
      ANSI_NORMAL_COLORS = [
                            [205,   0,   0], # Red
                            [  0, 205,   0], # Green
                            [205, 205,   0], # Yellow
                            [  0,   0, 238], # Blue
                            [205,   0, 205], # Magenta
                            [  0, 205, 205]  # Cyan
                           ]
      ANSI_BRIGHT_COLORS = [
                            [255,   0,   0], # Red
                            [  0, 255,   0], # Green
                            [255, 255,   0], # Yellow
                            [ 92,  92, 255], # Blue
                            [255,   0, 255], # Magenta
                            [  0, 255, 255]  # Cyan
                           ]
      MIN_NORMAL_COLOR = 31
      MIN_BRIGHT_COLOR = 91
      MAX_NORMAL_COLOR = MIN_NORMAL_COLOR + ANSI_NORMAL_COLORS.size - 1
      MAX_BRIGHT_COLOR = MIN_BRIGHT_COLOR + ANSI_BRIGHT_COLORS.size - 1

      CMD       = "blinK1-tool"
      OPT_FADE  = 10
      OPT_DELAY = 200
      OPT_BLINK = 1

      def setup
        system("%s --off -q" % [CMD])
      end

      def notifier(ansi_color)
        rgb =  case ansi_color
               when MIN_NORMAL_COLOR .. MAX_NORMAL_COLOR
                 ANSI_NORMAL_COLORS[ ansi_color - MIN_NORMAL_COLOR ]
               when MIN_BRIGHT_COLOR .. MAX_BRIGHT_COLOR
                 ANSI_BRIGHT_COLORS[ ansi_color - MIN_BRIGHT_COLOR ]
               else
                 [0,0,0]
               end
        cmd = "%s -m %d -t %d --rgb %s --blink %d -q" % [ CMD, OPT_FADE, OPT_DELAY, rgb.join(','), OPT_BLINK ]
        return lambda { system cmd }
      end

    end
    Blink1Notify.new.setup
  end


  output do |item|
    next if item.nil? || item["user"].nil?
    screen_name = item["user"]["screen_name"]
    color = color_of(screen_name)
    EM.defer( Blink1Notify.new.notifier color )
  end
end