| DiffUtil.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 *
5 *
6 *
7 * The contents of this file are subject to the terms of the Liferay Enterprise
8 * Subscription License ("License"). You may not use this file except in
9 * compliance with the License. You can obtain a copy of the License by
10 * contacting Liferay, Inc. See the License for the specific language governing
11 * permissions and limitations under the License, including but not limited to
12 * distribution rights of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.portal.kernel.util;
24
25 import java.io.Reader;
26
27 import java.util.List;
28
29 /**
30 * <a href="DiffUtil.java.html"><b><i>View Source</i></b></a>
31 *
32 * <p>
33 * This class can compare two different versions of a text. Source refers to the
34 * earliest version of the text and target refers to a modified version of
35 * source. Changes are considered either as a removal from the source or as an
36 * addition to the target. This class detects changes to an entire line and also
37 * detects changes within lines, such as, removal or addition of characters.
38 * Take a look at <code>DiffTest</code> to see the expected inputs and outputs.
39 * </p>
40 *
41 * @author Bruno Farache
42 * @see com.liferay.portal.kernel.util.DiffUtil
43 */
44 public class DiffUtil {
45
46 public static List<DiffResult>[] diff(Reader source, Reader target) {
47 return getDiff().diff(source, target);
48 }
49
50 public static List<DiffResult>[] diff(
51 Reader source, Reader target, String addedMarkerStart,
52 String addedMarkerEnd, String deletedMarkerStart,
53 String deletedMarkerEnd, int margin) {
54
55 return getDiff().diff(
56 source, target, addedMarkerStart, addedMarkerEnd,
57 deletedMarkerStart, deletedMarkerEnd, margin);
58 }
59
60 public static Diff getDiff() {
61 return _diff;
62 }
63
64 public void setDiff(Diff diff) {
65 _diff = diff;
66 }
67
68 private static Diff _diff;
69
70 }