Split apache access log file

split_apache_log.rb

require 'date'

apache_log = ARGV[0] unless ARGV.empty?

@cur_date = nil
@next_date = nil

File.open(apache_log) do |f|
  
  for line in f
  
    if line.match /(\d{1,2}\/\w{1,3}\/\d{1,4})/
  
      @next_date = Date.strptime($~[1], "%d/%b/%Y").strftime("%d-%m-%Y")
      unless @cur_date == @next_date
        @cur_date = @next_date
        begin
          log.close         
        rescue NameError
          log = nil
        end
        log = File.new "access-#{@cur_date}.log", "w"
      else
        log.write(line)
      end
    end
  
  end
    
end