adb-pretty-logcat.rb

#!/usr/bin/env ruby
# coding: utf-8

CMD = "#{ENV['ANDROID_HOME']}/platform-tools/adb logcat -v process"
(TAG,PRIORITY) = (ARGV.first || '*:I').split(':')

Signal.trap(:INT) do
  puts "\nさよなライオン"
  exit 0
end

IO.popen("#{CMD} -s #{TAG}:#{PRIORITY}", 'r:utf-8') do |log|
  while line = log.readline
    line.chomp!
    line.sub!(/\(#{TAG}\)\z/, '') if TAG != '*'
    color = case line
            when /\AV/ then 30 # black
            when /\AD/ then 33 # yellow
            when /\AI/ then 34 # blue
            when /\AW/ then 31 # red
            when /\AE/ then 41 # on_red
            end
    STDOUT.puts "\e[#{color}m#{line}\e[0m"
  end
end