File.here.rb

# require_here.rb
# by Josh Susser

class String
  # __FILE__.require_here 'foo'       # => require 'CURRENT_DIR/foo'
  # __FILE__.require_here %w(lib foo) # joins path segments so you don't have to
  # __FILE__.require_here             # add the current file's directory to the load path
  def require_here(path=nil)
    here = File.expand_path(File.dirname(self))
    if path
      require File.join(here, *path)
    else
      $LOAD_PATH.unshift(here)
    end
  end

  # __FILE__.require_there 'lib'       # => $LOAD_PATH.unshift 'CURRENT_DIR/lib'
  def require_there(path)
    here = File.expand_path(File.dirname(self))
    there = File.join(here, *path)
    $LOAD_PATH.unshift(there)
  end
end