From: Paul Lutus <nospam@...>
Date: 2006-11-14T09:45:06+09:00
Subject: Re: parsing unknown options

Stefano Crocco wrote:

> I'm not a ruby expert, so forgive me if the answer to my question is
> obvious.

This time, the answer really is obvious.

> The problem is that, as far as I can tell, OptParse will raise an
> exception when it finds an unknown option (i.e as soon as it hits -c in
> my example above). Is there a way around this behavior? Or does anybody
> know of a better way to approach the whole problem?

Sure. Parse the command line yourself. Scan the input arguments, select
those that begin with a dash, submit any second character to a case
statement. Use the case statement to distribute your actions. You would
have to do the latter no matter how you parsed the command line, and the
former is a few lines of code.

-----------------------------------------

#!/usr/bin/ruby -w

ARGV.each do |com|
   if com.length > 1 && com[0,1] == '-'
      case com[1,1]
      when 'a' then
         puts "Option a"
      when 'b' then
         puts "Option b"
      when 'c' then
         puts "Option c"
      when 'd' then
         puts "Option d"
      end
   end
end

-----------------------------------------

-- 
Paul Lutus
http://www.arachnoid.com