| /******************************************************************************* |
| * 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.util.regex.Pattern; |
| |
| import org.eclipse.compare.internal.DocLineComparator; |
| import org.eclipse.compare.rangedifferencer.RangeDifference; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| |
| /** |
| * Compute differences between local and remote contents and checks if all match |
| * the given regex pattern. If there is at least one diff whose either left or |
| * right side don't match the pattern |
| * <code>{@link #compareRangeDifferences(RangeDifference[], IDocument, IDocument)}</code> |
| * returns <code>false</code>. |
| */ |
| public class RegexDiffComparator extends RangeDifferenceComparator { |
| |
| private Pattern pattern; |
| |
| public RegexDiffComparator(Pattern pattern, boolean ignoreWhitespace) { |
| super(ignoreWhitespace); |
| this.pattern = pattern; |
| } |
| |
| @Override |
| protected boolean compareRangeDifferences(RangeDifference[] ranges, |
| IDocument lDoc, IDocument rDoc) { |
| try { |
| for (RangeDifference diff : ranges) { |
| if (diff.kind() == RangeDifference.NOCHANGE) |
| continue; |
| |
| DocLineComparator sleft = new DocLineComparator(lDoc, null, |
| shouldIgnoreWhitespace()); |
| DocLineComparator sright = new DocLineComparator(rDoc, null, |
| shouldIgnoreWhitespace()); |
| |
| IRegion lRegion = lDoc.getLineInformation(diff.leftStart()); |
| int leftEnd = sleft.getTokenStart(diff.leftStart() |
| + diff.leftLength()); |
| String left = lDoc.get(lRegion.getOffset(), |
| leftEnd - lRegion.getOffset()); |
| IRegion rRegion = rDoc.getLineInformation(diff.rightStart()); |
| int rightEnd = sright.getTokenStart(diff.rightStart() |
| + diff.rightLength()); |
| String right = rDoc.get(rRegion.getOffset(), |
| rightEnd - rRegion.getOffset()); |
| |
| boolean m1 = pattern.matcher(left).matches(); |
| boolean m2 = pattern.matcher(right).matches(); |
| |
| if (!m1 && !m2) |
| // it's false that all diffs match the pattern |
| return false; |
| } |
| } catch (BadLocationException e) { |
| // ignore |
| } |
| return true; |
| } |
| } |