From: Martin Hansen <mail@...>
Date: 2010-08-06T17:26:55+09:00
Subject: Re: Abstracting exception handling

I have been looking at your suggestions and done a few tests. However, I 
wonder if there is not a more simple way - and especially since these 
suggestions depends on methods being defined in order to invoke error 
handling. Here is a real life example of the type of minimalistic 
scripts I want to write:

#!/usr/bin/env ruby

require 'biopieces'

casts = []
casts << 
{:long=>'compress',:short=>'Z',:type=>'flag',:mandatory=>false,:default=>nil,:allowed=>nil,:disallowed=>nil}

bp = Biopieces.new

options = bp.parse(ARGV,casts)

bp.mktmpdir # create an optional temporary directory that is auto 
deleted.

bp.each_record do |record|
  # do something to each record (possibly according to the options). 
e.g.:
  record["SEQ"].upcase! if record.has_key? "SEQ"
  bp.puts record
  raise # Debug test of invokation of error handling
end



Now, I would like error handling to be invoked, if possible from 
biopieces.rb, in the case some exception is raised (either by raise or 
ctrl-c, etc), but I am not defining any methods and thus the suggested 
meta-programming approaches seem to fall short.


Cheers,


Martin
-- 
Posted via http://www.ruby-forum.com/.