| /******************************************************************************* |
| * 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); |
| } |
| } |