1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/*******************************************************************************
* Copyright (c) 2011 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ui.synchronize;
import java.io.IOException;
import java.io.InputStream;
import org.eclipse.compare.internal.DocLineComparator;
import org.eclipse.compare.internal.Utilities;
import org.eclipse.compare.rangedifferencer.RangeDifference;
import org.eclipse.compare.rangedifferencer.RangeDifferencer;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.Region;
import org.eclipse.team.internal.core.subscribers.AbstractContentComparator;
/**
* Compare differences between local and remote contents.
* <p>
* Subclass to specify a criterion for comparison.
*/
public abstract class RangeDifferenceComparator extends
AbstractContentComparator {
public RangeDifferenceComparator(boolean ignoreWhitespace) {
super(ignoreWhitespace);
}
/**
* Return <code>true</code> if the provided differences match a criterion.
*
* @param ranges the differences found
* @param lDoc the left document
* @param rDoc the right document
* @return <code>true</code> if all differences match a criterion
*/
abstract protected boolean compareRangeDifferences(RangeDifference[] ranges,
IDocument lDoc, IDocument rDoc);
@Override
protected boolean contentsEqual(IProgressMonitor monitor, InputStream is1,
InputStream is2, boolean ignoreWhitespace) {
try {
final String left = Utilities.readString(is1, ResourcesPlugin.getEncoding());
final String right = Utilities.readString(is2, ResourcesPlugin.getEncoding());
return compareStrings(left, right, monitor);
} catch (IOException e) {
// ignore
}
return false;
}
private boolean compareStrings(String left, String right,
IProgressMonitor monitor) {
IDocument lDoc = new Document(left);
IDocument rDoc = new Document(right);
DocLineComparator sleft = new DocLineComparator(lDoc, new Region(0,
lDoc.getLength()), shouldIgnoreWhitespace());
DocLineComparator sright = new DocLineComparator(rDoc, new Region(0,
rDoc.getLength()), shouldIgnoreWhitespace());
final DocLineComparator sl = sleft, sr = sright;
RangeDifference[] ranges = RangeDifferencer.findRanges(monitor, sl, sr);
return compareRangeDifferences(ranges, lDoc, rDoc);
}
}
|
