# File lib/chef/util/file_edit.rb, line 31
                def initialize(filepath)
                        @original_pathname = filepath
                        @file_edited = false
                        
                        raise ArgumentError, "File doesn't exist" unless File.exist? @original_pathname
                        raise ArgumentError, "File is blank" unless (@contents = File.new(@original_pathname).readlines).length > 0
                end