| /******************************************************************************* |
| * Copyright (c) 2005, 2008 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.ltk.internal.ui.refactoring.model; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.util.Arrays; |
| 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.RefactoringDescriptorProxy; |
| 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; |
| |
| /** |
| * Combined storage and stream merger for refactoring history index files. |
| * |
| * @since 3.2 |
| */ |
| public final class RefactoringIndexMerger implements IStorageMerger { |
| |
| /** |
| * Creates a new refactoring index merger. |
| */ |
| public RefactoringIndexMerger() { |
| // Do nothing |
| } |
| |
| @Override |
| public boolean canMergeWithoutAncestor() { |
| return true; |
| } |
| |
| @Override |
| public IStatus merge(final OutputStream output, final String encoding, final IStorage ancestor, final IStorage target, final IStorage source, final IProgressMonitor monitor) throws CoreException { |
| InputStream targetStream= null; |
| InputStream sourceStream= null; |
| try { |
| targetStream= target.getContents(); |
| sourceStream= target.getContents(); |
| performMerge(output, encoding, targetStream, sourceStream); |
| } catch (IOException exception) { |
| return new Status(IStatus.ERROR, RefactoringUIPlugin.getPluginId(), 1, RefactoringUIMessages.RefactoringHistoryMerger_error_auto_merge, exception); |
| } 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 encoding |
| * the output stream encoding |
| * @param target |
| * the target input stream |
| * @param source |
| * the source input stream |
| * @throws IOException |
| * if an input/output error occurs |
| * @throws UnsupportedEncodingException |
| * if the encoding is not supported |
| */ |
| private void performMerge(final OutputStream output, final String encoding, final InputStream target, final InputStream source) throws IOException, UnsupportedEncodingException { |
| final RefactoringDescriptorProxy[] sourceProxies= RefactoringHistoryManager.readRefactoringDescriptorProxies(source, null, 0, Long.MAX_VALUE); |
| final RefactoringDescriptorProxy[] targetProxies= RefactoringHistoryManager.readRefactoringDescriptorProxies(target, null, 0, Long.MAX_VALUE); |
| final Set<RefactoringDescriptorProxy> set= new HashSet<>(); |
| set.addAll(Arrays.asList(sourceProxies)); |
| set.addAll(Arrays.asList(targetProxies)); |
| RefactoringHistoryManager.writeRefactoringDescriptorProxies(output, set.toArray(new RefactoringDescriptorProxy[set.size()])); |
| } |
| } |