1 package org.djutils.decoderdumper;
2
3 /**
4 * <p>
5 * Copyright (c) 2013-2023 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 * @version $Revision$, $LastChangedDate$, by $Author$, initial version Jan 3, 2019 <br>
9 * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
10 * @author <a href="https://www.tudelft.nl/staff/p.knoppers/">Peter Knoppers</a>
11 */
12 public class FixedString implements Decoder
13 {
14 /**
15 * The String that will be returned by <code>getResult</code> on each invocation of getResult after at least one call to
16 * append.
17 */
18 private final String fixedResult;
19
20 /** Remember if the append method was ever called. */
21 private boolean appendWasCalled = false;
22
23 /**
24 * Construct a Decoder that returns a fixed result in the <code>getResult</code> method.
25 * @param fixedResult String; the String that the <code>getResult</code> method will return on each invocation
26 */
27 public FixedString(final String fixedResult)
28 {
29 this.fixedResult = fixedResult;
30 }
31
32 /** {@inheritDoc} */
33 @Override
34 public String getResult()
35 {
36 if (this.appendWasCalled)
37 {
38 this.appendWasCalled = false;
39 return this.fixedResult;
40 }
41 return "";
42 }
43
44 /** {@inheritDoc} */
45 @Override
46 public int getMaximumWidth()
47 {
48 return this.fixedResult.length();
49 }
50
51 /** {@inheritDoc} */
52 @Override
53 public boolean append(final int address, final byte theByte)
54 {
55 this.appendWasCalled = true;
56 return false;
57 }
58
59 /** {@inheritDoc} */
60 @Override
61 public boolean ignoreForIdenticalOutputCheck()
62 {
63 return false;
64 }
65
66 /** {@inheritDoc} */
67 @Override
68 public String toString()
69 {
70 return "FixedString [fixedResult=" + this.fixedResult + ", appendWasCalled=" + this.appendWasCalled + "]";
71 }
72
73 }