| DiffUtil.java |
1 /**
2 * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License as published by the Free
6 * Software Foundation; either version 2.1 of the License, or (at your option)
7 * any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12 * details.
13 */
14
15 package com.liferay.portal.kernel.util;
16
17 import java.io.Reader;
18
19 import java.util.List;
20
21 /**
22 * <a href="DiffUtil.java.html"><b><i>View Source</i></b></a>
23 *
24 * <p>
25 * This class can compare two different versions of a text. Source refers to the
26 * earliest version of the text and target refers to a modified version of
27 * source. Changes are considered either as a removal from the source or as an
28 * addition to the target. This class detects changes to an entire line and also
29 * detects changes within lines, such as, removal or addition of characters.
30 * Take a look at <code>DiffTest</code> to see the expected inputs and outputs.
31 * </p>
32 *
33 * @author Bruno Farache
34 * @see com.liferay.portal.kernel.util.DiffUtil
35 */
36 public class DiffUtil {
37
38 public static List<DiffResult>[] diff(Reader source, Reader target) {
39 return getDiff().diff(source, target);
40 }
41
42 public static List<DiffResult>[] diff(
43 Reader source, Reader target, String addedMarkerStart,
44 String addedMarkerEnd, String deletedMarkerStart,
45 String deletedMarkerEnd, int margin) {
46
47 return getDiff().diff(
48 source, target, addedMarkerStart, addedMarkerEnd,
49 deletedMarkerStart, deletedMarkerEnd, margin);
50 }
51
52 public static Diff getDiff() {
53 return _diff;
54 }
55
56 public void setDiff(Diff diff) {
57 _diff = diff;
58 }
59
60 private static Diff _diff;
61
62 }