require 'find'
require 'rubygems'
gem 'sexp_processor', '~> 3.0.0'
require 'sexp_processor'
require 'composite_sexp_processor'
gem 'ruby_parser', '~> 2.0.0'
require 'ruby_parser'
gem 'diff-lcs', '~> 1.1'
require 'diff/lcs'

# Equivalent to a header guard in C/C++
# Used to prevent the class/module from being loaded more than once
unless defined? Doppelganger

module Doppelganger
  
  # :stopdoc:
  VERSION = '0.8.0'.freeze
  LIBPATH = ::File.expand_path(::File.dirname(__FILE__)) + ::File::SEPARATOR
  PATH = ::File.dirname(LIBPATH) + ::File::SEPARATOR

  # Returns the version string for the library.
  #
  def self.version
    VERSION
  end

  # Returns the library path for the module. If any arguments are given,
  # they will be joined to the end of the libray path using
  # <tt>File.join</tt>.
  #
  def self.libpath( *args )
    args.empty? ? LIBPATH : ::File.join(LIBPATH, args.flatten)
  end

  # Returns the lpath for the module. If any arguments are given,
  # they will be joined to the end of the path using
  # <tt>File.join</tt>.
  #
  def self.path( *args )
    args.empty? ? PATH : ::File.join(PATH, args.flatten)
  end

  # Utility method used to rquire all files ending in .rb that lie in the
  # directory below this file that has the same name as the filename passed
  # in. Optionally, a specific _directory_ name can be passed in such that
  # the _filename_ does not have to be equivalent to the directory.
  #
  def self.require_all_libs_relative_to( fname, dir = nil )
    dir ||= ::File.basename(fname, '.*')
    search_me = ::File.expand_path(
        ::File.join(::File.dirname(fname), dir, '**', '*.rb'))

    Dir.glob(search_me).sort.each {|rb| require rb}
  end
  # :startdoc:
  
end  # module Doppelganger

Doppelganger.require_all_libs_relative_to __FILE__

end  # unless defined?