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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.eclipse.org/org/documents/epl-v10.php
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.ide.eclipse.adt.internal.wizards.templates;
     18 
     19 import com.android.annotations.NonNull;
     20 import com.android.ide.eclipse.adt.AdtPlugin;
     21 import com.android.ide.eclipse.adt.AdtUtils;
     22 import com.google.common.io.Closeables;
     23 import com.google.common.io.Files;
     24 import com.google.common.io.InputSupplier;
     25 
     26 import org.eclipse.core.resources.IContainer;
     27 import org.eclipse.core.resources.IFile;
     28 import org.eclipse.core.resources.IFolder;
     29 import org.eclipse.core.resources.IResource;
     30 import org.eclipse.core.resources.ResourcesPlugin;
     31 import org.eclipse.core.runtime.CoreException;
     32 import org.eclipse.core.runtime.IPath;
     33 import org.eclipse.core.runtime.IProgressMonitor;
     34 import org.eclipse.core.runtime.OperationCanceledException;
     35 import org.eclipse.core.runtime.SubProgressMonitor;
     36 import org.eclipse.ltk.core.refactoring.Change;
     37 import org.eclipse.ltk.core.refactoring.RefactoringStatus;
     38 import org.eclipse.ltk.core.refactoring.resource.ResourceChange;
     39 
     40 import java.io.File;
     41 import java.io.FileInputStream;
     42 import java.io.InputStream;
     43 import java.net.URI;
     44 
     45 /** Change which lazily copies a file */
     46 public class CreateFileChange extends ResourceChange {
     47     private String mName;
     48     private final IPath mPath;
     49     private final File mSource;
     50 
     51     CreateFileChange(@NonNull String name, @NonNull IPath workspacePath, File source) {
     52         mName = name;
     53         mPath = workspacePath;
     54         mSource = source;
     55     }
     56 
     57     @Override
     58     protected IResource getModifiedResource() {
     59       return ResourcesPlugin.getWorkspace().getRoot().getFile(mPath);
     60     }
     61 
     62     @Override
     63     public String getName() {
     64         return mName;
     65     }
     66 
     67     @Override
     68     public RefactoringStatus isValid(IProgressMonitor pm)
     69             throws CoreException, OperationCanceledException {
     70         RefactoringStatus result = new RefactoringStatus();
     71         IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(mPath);
     72         URI location = file.getLocationURI();
     73         if (location == null) {
     74             result.addFatalError("Unknown location " + file.getFullPath().toString());
     75             return result;
     76         }
     77         return result;
     78     }
     79 
     80     @SuppressWarnings("resource") // Eclipse doesn't know about Guava's Closeables.closeQuietly
     81     @Override
     82     public Change perform(IProgressMonitor pm) throws CoreException {
     83         InputSupplier<FileInputStream> supplier = Files.newInputStreamSupplier(mSource);
     84         InputStream is = null;
     85         try {
     86             pm.beginTask("Creating file", 3);
     87             IFile file = (IFile) getModifiedResource();
     88 
     89             IContainer parent = file.getParent();
     90             if (parent != null && !parent.exists()) {
     91                 IFolder folder = ResourcesPlugin.getWorkspace().getRoot().getFolder(
     92                         parent.getFullPath());
     93                 AdtUtils.ensureExists(folder);
     94             }
     95 
     96             is = supplier.getInput();
     97             file.create(is, false, new SubProgressMonitor(pm, 1));
     98             pm.worked(1);
     99         } catch (Exception ioe) {
    100             AdtPlugin.log(ioe, null);
    101         } finally {
    102             Closeables.closeQuietly(is);
    103             pm.done();
    104         }
    105         return null;
    106     }
    107 }
    108