2 * Sonar, open source software quality management tool.
3 * Copyright (C) 2008-2012 SonarSource
4 * mailto:contact AT sonarsource DOT com
6 * Sonar is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 3 of the License, or (at your option) any later version.
11 * Sonar is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Sonar; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
20 package org.sonar.plugins.core.timemachine;
22 import org.sonar.plugins.core.timemachine.tracking.HashedSequence;
23 import org.sonar.plugins.core.timemachine.tracking.HashedSequenceComparator;
24 import org.sonar.plugins.core.timemachine.tracking.StringText;
25 import org.sonar.plugins.core.timemachine.tracking.StringTextComparator;
27 public class ViolationTrackingBlocksRecognizer {
29 private final HashedSequence<StringText> a;
30 private final HashedSequence<StringText> b;
31 private final HashedSequenceComparator<StringText> cmp;
33 public ViolationTrackingBlocksRecognizer(String referenceSource, String source) {
34 this(new StringText(referenceSource), new StringText(source), StringTextComparator.IGNORE_WHITESPACE);
37 private ViolationTrackingBlocksRecognizer(StringText a, StringText b, StringTextComparator cmp) {
38 this.a = HashedSequence.wrap(a, cmp);
39 this.b = HashedSequence.wrap(b, cmp);
40 this.cmp = new HashedSequenceComparator<StringText>(cmp);
43 public int computeLengthOfMaximalBlock(int startA, int startB) {
44 if (!cmp.equals(a, startA, b, startB)) {
50 while (ai < a.length() && bi < b.length() && cmp.equals(a, ai, b, bi)) {
57 while (ai >= 0 && bi >= 0 && cmp.equals(a, ai, b, bi)) {
62 // Note that position (startA, startB) was counted twice