make_stream

# File lib/yaml/stringio.rb, line 55
        def YAML.make_stream( io )
        if String === io
            io = StringIO.new( io )
        elsif not IO === io
            raise YAML::Error, "YAML stream must be an IO or String object."
        end
        if YAML::unicode
            def io.readline
                YAML.utf_to_internal( readline( @ln_sep ), @utf_encoding )
            end
            def io.check_unicode
                @utf_encoding = YAML.sniff_encoding( read( 4 ) )
                @ln_sep = YAML.enc_separator( @utf_encoding )
                seek( -4, IO::SEEK_CUR )
            end
                    def io.utf_encoding
                      @utf_encoding
                    end
            io.check_unicode
        else
            def io.utf_encoding
                :None
            end
        end
        io
        end