From: Ola Bini <ola.bini@...>
Date: 2006-09-11T23:45:38+09:00
Subject: Filtering files while copying/moving.

Hi,

I have the need to filter files, replacing in-place-tokens with 
variables during the copy. I would like to be able to do something like 
this:

FileUtils.filter_cp_r from_dir, to_dir, { "SERVER1" => "s1.example.com", 

          /LDAP_SERVER_([\d])/ => "l\\1.example.com" }
and those files will be copied, but modified so that in the destination 
dir, all occurances of SERVER1 have been changed to s1.example.com and 
the regexp substituted with the substitution string.

Is there any library for this? I've looked but not found. My current 
approach is to create a small lib for this myself, using FileUtils, Find 
and Tempfile. But it feels like this should be a common operation, 
especially when doing installation scripts.

And before someone suggests it: no, I'm not at liberty to change the 
tokens, so I can't embed ERb-tags in the source material.

-- 
  Ola Bini (http://ola-bini.blogspot.com)
  JvYAML, RbYAML, JRuby and Jatha contributor
  System Developer, Karolinska Institutet (http://www.ki.se)
  OLogix Consulting (http://www.ologix.com)

  "Yields falsehood when quined" yields falsehood when quined.