Compare two files

snippet.rb

require 'pathname'

# Compares two files for "similar" look, ignoring
# where elements are in the document.
def collect_unique_lines(*args)
  dir = Pathname.new(Rails.root.join('tmp'))
  contents = File.read(dir.join(args.join('.'))).split("\n")
  lines = []
  # proposed_lines = []
  contents.inject(lines) {|mem,string|
    string.strip!
    if string.empty?
      mem
    elsif string =~ /^\#/
      mem
    else
      mem << string
    end
  }
end

['production'].each do |rails_env|
  ['conductor.conf', 'conductor.common'].each do |filename_prefix|
    @proposed, @live = nil, nil
    @proposed = collect_unique_lines(filename_prefix, rails_env, 'proposed')
    @live = collect_unique_lines(filename_prefix, rails_env, 'live')

    if @proposed == @live
      puts "MATCH Filename: #{filename_prefix}"
    else
      puts "NO MATCH: #{filename_prefix}"
      puts "\tIN PROPOSED BUT NOT LIVE:"
      puts "\t\t" << (@proposed.clone - @live.clone).join("\n\t\t")
      puts "\tIN LIVE BUT NOT PROPOSED:"
      puts "\t\t" << (@live.clone - @proposed.clone).join("\n\t\t")
    end
  end
end