From: Art Gillespie <agillesp@...>
Date: 2005-12-31T17:30:24+09:00
Subject: Newb: Search & Replace

Hi all,

I'm implementing build automation in Ruby as a 'learn Ruby' exercise. 
I wanted to post the following code and solicit feedback on any idioms
I might have missed with regards to text processing with Ruby.  The
code works--I'm just wondering if it should be shorter, or smarter,
or...

Thanks,

Art

---

#!/usr/bin/env ruby

VERSION_HEX=ARGV[0]

File.open("iDrum_prefix.h.tmp", "w") do |ofile|
  File.open("iDrum_prefix.h") do |file|
    file.each do |line|
      if line =~ /^#define kIDComponentVersion\t*(.*)/
        ofile.puts line.sub($1, "#{VERSION_HEX}")
      else
        ofile.puts line
      end
    end
  end
end

File.rename("iDrum_prefix.h.tmp", "iDrum_prefix.h")