1 package org.djutils.decoderdumper;
2
3 /**
4 * Keep track of the address of the decoder-dumper and call flushLine when the last possible address of a line is received.
5 * <p>
6 * Copyright (c) 2013-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
7 * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
8 * </p>
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 HexAddressDecoder implements Decoder
13 {
14 /** Round all printed addresses down to a multiple of this value. */
15 private final int roundToMultiple;
16
17 /**
18 * Construct a new HexAddressDecoder.
19 * @param roundToMultiple int; if > 1 round addresses down to the nearest (lower) multiple of this value and the append
20 * method will return true when the last byte before such a multiple is added.
21 */
22 public HexAddressDecoder(final int roundToMultiple)
23 {
24 this.roundToMultiple = roundToMultiple > 0 ? roundToMultiple : 1;
25 }
26
27 /** Result returned by getResult. */
28 private String result = "";
29
30 @Override
31 public String getResult()
32 {
33 String retVal = this.result;
34 this.result = "";
35 return retVal;
36 }
37
38 @Override
39 public int getMaximumWidth()
40 {
41 return 8;
42 }
43
44 @Override
45 public boolean append(final int address, final byte theByte)
46 {
47 this.result = String.format("%08x", address / this.roundToMultiple * this.roundToMultiple);
48 return this.roundToMultiple > 1 && address % this.roundToMultiple == this.roundToMultiple - 1;
49 }
50
51 @Override
52 public boolean ignoreForIdenticalOutputCheck()
53 {
54 return true;
55 }
56
57 @Override
58 public String toString()
59 {
60 return "HexAddressDecoder [result=" + this.result + "]";
61 }
62
63 }