From: Ron Fox <fox@...>
Date: 2007-11-21T02:55:01+09:00
Subject: Re: Array object but to_a is needed to access data

Works for me once I clean up the issues in your paste.. specifically:
This nonsense:

 >     endclass Filter
 >     include State
 > end

towards the end of the State module def.. at least I hope these are
paste errors.

Ron.

Luc Evers wrote:
>  Hi,
> 
>  Below a progam (test version) that shall analyse syslog messages.
>  The program works fine but I don't understand why to_a is needed.
> (filter.hash[:action].to_a[0])
> 
>  filter.hash[:action].class -> answer array
>  filter.hash[:action][0]    -> don't work
>  filter.hash[:action].to_a[0] -> ok
> 
> 
> ---------------------------------------------------------------------
> 
> module State
>  attr_reader :hash, :action
> 
>  def initialize
>    @hash = Hash.new
>    @action = Array.new
>  end
> 
>  def chkurg(line)
>     case line
>      when /%FAN-3-FAN_FAILED/
>          @action << 'urgent' << 'mail' << 'sms'
>          @hash[:alarm] = 'testurgent'
>          @hash[:action] = @action
>       #   @hash =  { :alarm  => 'urgent',
>       #              :action => @action }
>      when /CONTROLLER-2-FIRMWARE/
>          action << 'urgent' << 'mail' << 'sms'
>          @hash =  { :alarm  => 'urgent',
>                     :action => @action }
>      else
>          "noState"
>     endclass Filter
>     include State
> end
> 
> 
> class Filter
>     include State
> end
> 
> 
> 
> filter = Filter.new()
> filename = ARGV.pop or fail "Usage: #$0 number filename"
> number = (ARGV.pop || 0).to_i.abs
> 
> File::Tail::Logfile.open(filename) do |log|
>   log.backward(number).tail { |line|
>   filter.hash.clear
>   filter.action.clear
>   filter.chkurg(line)
>    case filter.hash[:alarm]
>      when 'testurgent'
>         puts filter.hash[:action].to_a[0]
>         puts "urgent: #{line}"
>      when 'reject'
>        puts "reject: #{line}"
>        next
>      else
>        puts "mail: #{line}"
>    end
>   }
> end
> 
>  end
> end