omglog.rb

require 'rb-fsevent'

LOG_CMD = 'git log --all --graph --pretty="format:%C(yellow)%h%Cblue%d%Creset %s %C(white) %an, %ar%Creset"'

abort("Run with a single argument (the directory to omglog).") unless ARGV.length == 1

FSEvent.new.tap {|fsevent|
  lines = (`tput lines`.to_i * 0.8).floor
  fsevent.watch(File.join(ARGV[0], '.git')) {|directories|
    `#{LOG_CMD} -#{lines}`.tap {|log|
      STDOUT.puts "\033[2J" + log
    }
  }
  fsevent.run
}