| /******************************************************************************* |
| * Copyright (c) 2005, 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ltk.internal.ui.refactoring.model; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.team.core.mapping.IStorageMerger; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.core.resources.IStorage; |
| |
| import org.eclipse.ltk.core.refactoring.RefactoringDescriptor; |
| |
| import org.eclipse.ltk.internal.core.refactoring.history.RefactoringHistoryManager; |
| import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIMessages; |
| import org.eclipse.ltk.internal.ui.refactoring.RefactoringUIPlugin; |
| |
| import org.eclipse.compare.IStreamMerger; |
| |
| /** |
| * Stream merger for refactoring history files. |
| * |
| * @since 3.2 |
| */ |
| public final class RefactoringHistoryMerger implements IStreamMerger, IStorageMerger { |
| |
| /** |
| * Creates a new refactoring history merger. |
| */ |
| public RefactoringHistoryMerger() { |
| // Do nothing |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean canMergeWithoutAncestor() { |
| return true; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public IStatus merge(final OutputStream output, final String outputEncoding, final InputStream ancestor, final String ancestorEncoding, final InputStream target, final String targetEncoding, final InputStream source, final String sourceEncoding, final IProgressMonitor monitor) { |
| try { |
| performMerge(output, target, source); |
| } catch (CoreException exception) { |
| return new Status(IStatus.ERROR, RefactoringUIPlugin.getPluginId(), 1, RefactoringUIMessages.RefactoringHistoryMerger_error_auto_merge, exception); |
| } |
| return Status.OK_STATUS; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public IStatus merge(final OutputStream output, final String encoding, final IStorage ancestor, final IStorage target, final IStorage other, final IProgressMonitor monitor) throws CoreException { |
| InputStream targetStream= null; |
| InputStream sourceStream= null; |
| try { |
| targetStream= target.getContents(); |
| sourceStream= target.getContents(); |
| performMerge(output, targetStream, sourceStream); |
| } catch (CoreException exception) { |
| return new Status(IStatus.ERROR, RefactoringUIPlugin.getPluginId(), 1, RefactoringUIMessages.RefactoringHistoryMerger_error_auto_merge, exception); |
| } finally { |
| if (targetStream != null) { |
| try { |
| targetStream.close(); |
| } catch (IOException exception) { |
| // Do nothing |
| } |
| } |
| if (sourceStream != null) { |
| try { |
| sourceStream.close(); |
| } catch (IOException exception) { |
| // Do nothing |
| } |
| } |
| } |
| return Status.OK_STATUS; |
| } |
| |
| /** |
| * Performs the actual merge operation. |
| * |
| * @param output |
| * the output stream |
| * @param target |
| * the target input stream |
| * @param source |
| * the source input stream |
| * @throws CoreException |
| * if an error occurs |
| */ |
| private void performMerge(final OutputStream output, final InputStream target, final InputStream source) throws CoreException { |
| final RefactoringDescriptor[] sourceDescriptors= RefactoringHistoryManager.readRefactoringDescriptors(source, 0, Long.MAX_VALUE); |
| final RefactoringDescriptor[] targetDescriptors= RefactoringHistoryManager.readRefactoringDescriptors(target, 0, Long.MAX_VALUE); |
| final Set set= new HashSet(); |
| for (int index= 0; index < sourceDescriptors.length; index++) |
| set.add(sourceDescriptors[index]); |
| for (int index= 0; index < targetDescriptors.length; index++) |
| set.add(targetDescriptors[index]); |
| final RefactoringDescriptor[] outputDescriptors= new RefactoringDescriptor[set.size()]; |
| set.toArray(outputDescriptors); |
| Arrays.sort(outputDescriptors, new Comparator() { |
| |
| public final int compare(final Object first, final Object second) { |
| final RefactoringDescriptor predecessor= (RefactoringDescriptor) first; |
| final RefactoringDescriptor successor= (RefactoringDescriptor) second; |
| final long delta= successor.getTimeStamp() - predecessor.getTimeStamp(); |
| if (delta > 0) |
| return 1; |
| else if (delta < 0) |
| return -1; |
| return 0; |
| } |
| }); |
| RefactoringHistoryManager.writeRefactoringDescriptors(output, outputDescriptors, true); |
| } |
| } |