Script for updating view files to the new <name>.<output_format>.<renderer> naming scheme of Rails 2.x (useful for upgrading 1.x apps).

upgrade_views

#!/usr/bin/env ruby
require 'optparse'

options = { :use_svn => true }
OptionParser.new do |opt|
  opt.banner = "Usage: upgrade_views [options]"
  opt.on('-f', '--file_rename', 'Use file renaming rather than svn move to update the files.') { |v| options[:use_svn] = false }
  opt.parse!(ARGV)
end

def do_file_rename_with_filesystem(old_file_parts, new_file_parts)
  File.rename(old_file_parts.join('.'), new_file_parts.join('.'))
end

def do_file_rename_with_svn(old_file_parts, new_file_parts)
  `svn move #{old_file_parts.join('.')} #{new_file_parts.join('.')}`
end

if options[:use_svn]
  alias :do_file_rename :do_file_rename_with_svn
else
  alias :do_file_rename :do_file_rename_with_filesystem
end

def move_view_file(view_file)
  puts "..processing: #{Dir.pwd}/#{view_file}"
  bits = view_file.split('.')
  the_ext = bits.last
  case the_ext
  when /^rhtml$/
    do_file_rename(bits, [bits[0..-2], 'html.erb'].flatten)
  when /^rjs$/
    do_file_rename(bits, [bits[0..-2], 'js.rjs'].flatten)
  when /^rxls$/
    do_file_rename(bits, [bits[0..-2], 'xls.rxls'].flatten)
  else
    puts "Oh! I don't know what to do to!"
  end
end

def walk_dir(dir)
  puts "Entering #{Dir.pwd}/#{dir}"
  Dir.chdir(dir) do
    Dir['*'].each do |file|
      if File.directory?(file)
        walk_dir(file)
      else
        move_view_file(file)
      end
    end
  end
end

walk_dir('app/views')