1 /*
2 * $Id: OutputStream.java,v 1.3 2005/10/08 04:05:57 weiju Exp $
3 *
4 * Created on 05.10.2005
5 * Copyright 2005 by Wei-ju Wu
6 *
7 * This file is part of The Z-machine Preservation Project (ZMPP).
8 *
9 * ZMPP is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * ZMPP is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ZMPP; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23 package org.zmpp.vm;
24
25 /***
26 * This interface defines an output stream in the Z-machine.
27 *
28 * @author Wei-ju Wu
29 * @version 1.0
30 */
31 public interface OutputStream {
32
33 /***
34 * Prints a Unicode string to the stream.
35 *
36 * @param str the string to print
37 */
38 void print(String str);
39
40 /***
41 * Prints a newline.
42 */
43 void newline();
44
45 /***
46 * Enables/disables this output stream.
47 *
48 * @param flag true to enable, false to disable
49 */
50 void setEnabled(boolean flag);
51
52 /***
53 * Determine, if this stream is enabled.
54 *
55 * @return true if enabled, false if disabled
56 */
57 boolean isEnabled();
58 }