1 package org.djutils.decoderdumper;
2
3 /**
4 * <p>
5 * Copyright (c) 2013-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
6 * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
7 * </p>
8 * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
9 * @author <a href="https://www.tudelft.nl/staff/p.knoppers/">Peter Knoppers</a>
10 */
11 public class FixedString implements Decoder
12 {
13 /**
14 * The String that will be returned by <code>getResult</code> on each invocation of getResult after at least one call to
15 * append.
16 */
17 private final String fixedResult;
18
19 /** Remember if the append method was ever called. */
20 private boolean appendWasCalled = false;
21
22 /**
23 * Construct a Decoder that returns a fixed result in the <code>getResult</code> method.
24 * @param fixedResult String; the String that the <code>getResult</code> method will return on each invocation
25 */
26 public FixedString(final String fixedResult)
27 {
28 this.fixedResult = fixedResult;
29 }
30
31 @Override
32 public String getResult()
33 {
34 if (this.appendWasCalled)
35 {
36 this.appendWasCalled = false;
37 return this.fixedResult;
38 }
39 return "";
40 }
41
42 @Override
43 public int getMaximumWidth()
44 {
45 return this.fixedResult.length();
46 }
47
48 @Override
49 public boolean append(final int address, final byte theByte)
50 {
51 this.appendWasCalled = true;
52 return false;
53 }
54
55 @Override
56 public boolean ignoreForIdenticalOutputCheck()
57 {
58 return false;
59 }
60
61 @Override
62 public String toString()
63 {
64 return "FixedString [fixedResult=" + this.fixedResult + ", appendWasCalled=" + this.appendWasCalled + "]";
65 }
66
67 }