| /******************************************************************************* |
| * Copyright (c) 2000, 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.compare.internal; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.eclipse.compare.IEditableContent; |
| import org.eclipse.compare.IStreamContentAccessor; |
| import org.eclipse.compare.ITypedElement; |
| import org.eclipse.compare.ResourceNode; |
| import org.eclipse.compare.structuremergeviewer.IStructureComparator; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IFolder; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| /** |
| * A buffer for a workspace resource. |
| */ |
| public class BufferedResourceNode extends ResourceNode { |
| |
| private boolean fDirty= false; |
| private IFile fDeleteFile; |
| |
| /** |
| * Creates a <code>ResourceNode</code> for the given resource. |
| * |
| * @param resource the resource |
| */ |
| public BufferedResourceNode(IResource resource) { |
| super(resource); |
| } |
| |
| /* |
| * Returns <code>true</code> if buffer contains uncommitted changes. |
| */ |
| public boolean isDirty() { |
| return fDirty; |
| } |
| |
| @Override |
| protected IStructureComparator createChild(IResource child) { |
| return new BufferedResourceNode(child); |
| } |
| |
| @Override |
| public void setContent(byte[] contents) { |
| fDirty= true; |
| super.setContent(contents); |
| } |
| |
| /* |
| * Commits buffered contents to resource. |
| */ |
| public void commit(IProgressMonitor pm) throws CoreException { |
| if (fDirty) { |
| |
| if (fDeleteFile != null) { |
| fDeleteFile.delete(true, true, pm); |
| return; |
| } |
| |
| IResource resource= getResource(); |
| if (resource instanceof IFile) { |
| |
| byte[] bytes= getContent(); |
| ByteArrayInputStream is= new ByteArrayInputStream(bytes); |
| try { |
| IFile file= (IFile) resource; |
| if (file.exists()) |
| file.setContents(is, false, true, pm); |
| else |
| file.create(is, false, pm); |
| fDirty= false; |
| } finally { |
| if (is != null) |
| try { |
| is.close(); |
| } catch(IOException ex) { |
| // Silently ignored |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public ITypedElement replace(ITypedElement child, ITypedElement other) { |
| |
| if (child == null) { // add resource |
| // create a node without a resource behind it! |
| IResource resource= getResource(); |
| if (resource instanceof IFolder) { |
| IFolder folder= (IFolder) resource; |
| IFile file= folder.getFile(other.getName()); |
| child= new BufferedResourceNode(file); |
| } |
| } |
| |
| if (other == null) { // delete resource |
| IResource resource= getResource(); |
| if (resource instanceof IFolder) { |
| IFolder folder= (IFolder) resource; |
| IFile file= folder.getFile(child.getName()); |
| if (file != null && file.exists()) { |
| fDeleteFile= file; |
| fDirty= true; |
| } |
| } |
| return null; |
| } |
| |
| if (other instanceof IStreamContentAccessor && child instanceof IEditableContent) { |
| IEditableContent dst= (IEditableContent) child; |
| |
| try { |
| InputStream is= ((IStreamContentAccessor)other).getContents(); |
| byte[] bytes= Utilities.readBytes(is); |
| if (bytes != null) |
| dst.setContent(bytes); |
| } catch (CoreException ex) { |
| // NeedWork |
| } |
| } |
| return child; |
| } |
| } |
| |