From: ara.t.howard@...
Date: 2006-10-06T23:05:05+09:00
Subject: Re: Using configuration files (replacing shellscripts)

On Fri, 6 Oct 2006, Trans wrote:

>> Is is possible to reduce the redundancy of
>>
>> ,----
>> | basedir: /this/directory
>> | logdir:  /this/directory/log
>> `----
>>
>> to something like that?
>>
>> ,----
>> | basedir: /this/directory
>> | logdir:  $basedir/log
>> `----
>>
>> I have to use this in the configs quite often.

harp:~ > cat a.rb
# this would come from file

conf = <<'conf'

   basedir "/this/directory"

   logdir "#{ basedir }/log"

conf

require 'traits'
class Config < OpenTraits
   def initialize(conf) instance_eval conf end
end

config = Config.new conf

p config.basedir
p config.logdir





harp:~ > ruby a.rb
"/this/directory"
"/this/directory/log"


-a
-- 
in order to be effective truth must penetrate like an arrow - and that is
likely to hurt. -- wei wu wei