cc-to-params.rb

require 'rubygems'
require 'active_support'
require 'pathname'
# require 'tapp'

class ToParams
  attr_reader :pathname

  def initialize(path)
    @pathname = Pathname.new path
    raise ArgumentError, "#{pathname} not found!" unless pathname.exist?
  end

  def process
    pathname.rename params_full_path
  end

  private
  def params_full_path
    File.join(dir, "#{params_name}#{extension}")
  end

  def params_name
    ActiveSupport::Inflector::underscore basename
  end

  def basename
    pathname.sub_ext('').basename
  end

  def dir
    pathname.dirname
  end

  def extension
    pathname.extname
  end
end

HELP_TEXT=<<EOF
  To use:
  ruby cc-to-params.rb FILE1 FILE2 FILE3 ...
  (will rename CamelCaseFiles to camel_case_files)
EOF

if $0 == __FILE__
  abort(HELP_TEXT) if (ARGV[0] && ARGV[0] == '-h')

  ARGV.each do |path|
    ToParams.new(path).process
  end
end

-1 for not embedding a test