org.eclipse.egit.ui.test/src/org/eclipse/egit/ui/view/synchronize/MockLogicalResourceMapping.java

   1 /*******************************************************************************
   2  * Copyright (C) 2016 Obeo.
   3  *
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License 2.0
   6  * which accompanies this distribution, and is available at
   7  * https://www.eclipse.org/legal/epl-2.0/
   8  *
   9  * SPDX-License-Identifier: EPL-2.0
  10  *******************************************************************************/
  11 package org.eclipse.egit.ui.view.synchronize;
  12
  13 import static org.eclipse.egit.ui.view.synchronize.MockLogicalModelProvider.MOCK_LOGICAL_FILE_EXTENSION;
  14
  15 import java.io.BufferedReader;
  16 import java.io.IOException;
  17 import java.io.InputStream;
  18 import java.io.InputStreamReader;
  19 import java.nio.charset.Charset;
  20 import java.util.ArrayList;
  21 import java.util.LinkedHashSet;
  22 import java.util.List;
  23 import java.util.Set;
  24
  25 import org.eclipse.core.resources.IContainer;
  26 import org.eclipse.core.resources.IFile;
  27 import org.eclipse.core.resources.IProject;
  28 import org.eclipse.core.resources.IResource;
  29 import org.eclipse.core.resources.IStorage;
  30 import org.eclipse.core.resources.mapping.RemoteResourceMappingContext;
  31 import org.eclipse.core.resources.mapping.ResourceMapping;
  32 import org.eclipse.core.resources.mapping.ResourceMappingContext;
  33 import org.eclipse.core.resources.mapping.ResourceTraversal;
  34 import org.eclipse.core.runtime.CoreException;
  35 import org.eclipse.core.runtime.IProgressMonitor;
  36 import org.eclipse.core.runtime.IStatus;
  37 import org.eclipse.core.runtime.Path;
  38 import org.eclipse.core.runtime.Status;
  39 import org.eclipse.core.runtime.SubMonitor;
  40
  41 /**
  42  * This resource mapping requires a remote context to get the logical model. It
  43  * will parse the content of its file which is supposed to be a list of files in
  44  * the same folder and aggregate all these files in its logical model. It does
  45  * that for every side, remote and base included.
  46  */
  47 public class MockLogicalResourceMapping extends ResourceMapping {
  48         private final IFile file;
  49
  50         private final String providerId;
  51
  52         public MockLogicalResourceMapping(IFile file, String providerId) {
  53                 this.file = file;
  54                 this.providerId = providerId;
  55         }
  56
  57         @Override
  58         public Object getModelObject() {
  59                 return file;
  60         }
  61
  62         @Override
  63         public String getModelProviderId() {
  64                 return providerId;
  65         }
  66
  67         @Override
  68         public ResourceTraversal[] getTraversals(ResourceMappingContext context,
  69                         IProgressMonitor monitor) throws CoreException {
  70                 SubMonitor sm = SubMonitor.convert(monitor, 3);
  71                 Set<IFile> result = new LinkedHashSet<IFile>();
  72                 result.add(file);
  73                 try {
  74                         List<IFile> dependencies = getDependencies(file, file.getParent());
  75                         result.addAll(dependencies);
  76                         sm.worked(1);
  77                         if (context instanceof RemoteResourceMappingContext) {
  78                                 RemoteResourceMappingContext rmc = (RemoteResourceMappingContext) context;
  79                                 IStorage baseContents = rmc.fetchBaseContents(file,
  80                                                 sm.newChild(1));
  81                                 if (baseContents != null) {
  82                                         result.addAll(
  83                                                         getDependencies(baseContents, file.getParent()));
  84                                 }
  85                                 IStorage remoteContents = rmc.fetchRemoteContents(file,
  86                                                 sm.newChild(1));
  87                                 if (remoteContents != null) {
  88                                         result.addAll(
  89                                                         getDependencies(remoteContents, file.getParent()));
  90                                 }
  91                         }
  92                 } catch (IOException e) {
  93                         throw new CoreException(
  94                                         new Status(IStatus.ERROR, "org.eclipse.egit.ui.test",
  95                                                         "Exception while computing logical model", e));
  96                 }
  97                 final IResource[] resourceArray = result
  98                                 .toArray(new IResource[0]);
  99                 return new ResourceTraversal[] { new ResourceTraversal(resourceArray,
 100                                 IResource.DEPTH_ONE, IResource.NONE), };
 101         }
 102
 103         private List<IFile> getDependencies(IStorage storage, IContainer c)
 104                         throws CoreException, IOException {
 105                 List<IFile> result = new ArrayList<>();
 106                 try (InputStream contents = storage.getContents();) {
 107                         BufferedReader r = new BufferedReader(
 108                                         new InputStreamReader(contents, Charset.forName("UTF-8")));
 109                         try {
 110                                 while (true) {
 111                                         String line = r.readLine();
 112                                         IFile dep = c.getFile(new Path(line));
 113                                         result.add(dep);
 114                                 }
 115                         } catch (Exception e) {
 116                                 // over
 117                         }
 118                 }
 119                 return result;
 120         }
 121
 122         protected void addLogicalModelFiles(IResource[] resources,
 123                         Set<IFile> sampleSiblings) {
 124                 if (resources == null) {
 125                         return;
 126                 }
 127                 for (IResource res : resources) {
 128                         if (res instanceof IFile && MOCK_LOGICAL_FILE_EXTENSION
 129                                         .equals(res.getFileExtension())) {
 130                                 sampleSiblings.add((IFile) res);
 131                         }
 132                 }
 133         }
 134
 135         @Override
 136         public IProject[] getProjects() {
 137                 return new IProject[] { file.getProject(), };
 138         }
 139 }