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      1 /*
      2  * Copyright (C) 2008 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.io;
     18 
     19 import com.android.io.IAbstractFile;
     20 import com.android.io.IAbstractFolder;
     21 import com.android.io.StreamException;
     22 
     23 import org.eclipse.core.resources.IContainer;
     24 import org.eclipse.core.resources.IFile;
     25 import org.eclipse.core.resources.IResource;
     26 import org.eclipse.core.runtime.CoreException;
     27 import org.eclipse.core.runtime.NullProgressMonitor;
     28 
     29 import java.io.ByteArrayInputStream;
     30 import java.io.ByteArrayOutputStream;
     31 import java.io.IOException;
     32 import java.io.InputStream;
     33 import java.io.OutputStream;
     34 
     35 /**
     36  * An implementation of {@link IAbstractFile} on top of an {@link IFile} object.
     37  */
     38 public class IFileWrapper implements IAbstractFile {
     39 
     40     private final IFile mFile;
     41 
     42     public IFileWrapper(IFile file) {
     43         mFile = file;
     44     }
     45 
     46     @Override
     47     public InputStream getContents() throws StreamException {
     48         try {
     49             return mFile.getContents();
     50         } catch (CoreException e) {
     51             StreamException.Error error = StreamException.Error.DEFAULT;
     52             if (mFile.isSynchronized(IResource.DEPTH_ZERO) == false) {
     53                 error = StreamException.Error.OUTOFSYNC;
     54             }
     55             throw new StreamException(e, this, error);
     56         }
     57     }
     58 
     59     @Override
     60     public void setContents(InputStream source) throws StreamException {
     61         try {
     62             mFile.setContents(source, IResource.FORCE, null);
     63         } catch (CoreException e) {
     64             throw new StreamException(e, this);
     65         }
     66     }
     67 
     68     @Override
     69     public OutputStream getOutputStream() throws StreamException {
     70         return new ByteArrayOutputStream() {
     71             @Override
     72             public void close() throws IOException {
     73                 super.close();
     74 
     75                 byte[] data = toByteArray();
     76                 try {
     77                     setContents(new ByteArrayInputStream(data));
     78                 } catch (StreamException e) {
     79                     throw new IOException();
     80                 }
     81             }
     82         };
     83     }
     84 
     85     @Override
     86     public PreferredWriteMode getPreferredWriteMode() {
     87         return PreferredWriteMode.INPUTSTREAM;
     88     }
     89 
     90     @Override
     91     public String getOsLocation() {
     92         return mFile.getLocation().toOSString();
     93     }
     94 
     95     @Override
     96     public String getName() {
     97         return mFile.getName();
     98     }
     99 
    100     @Override
    101     public boolean exists() {
    102         return mFile.exists();
    103     }
    104 
    105     @Override
    106     public boolean delete() {
    107         try {
    108             mFile.delete(true /*force*/, new NullProgressMonitor());
    109             return true;
    110         } catch (CoreException e) {
    111             return false;
    112         }
    113     }
    114 
    115     /**
    116      * Returns the {@link IFile} object that the receiver could represent. Can be <code>null</code>
    117      */
    118     public IFile getIFile() {
    119         return mFile;
    120     }
    121 
    122     @Override
    123     public long getModificationStamp() {
    124         return mFile.getModificationStamp();
    125     }
    126 
    127     @Override
    128     public boolean equals(Object obj) {
    129         if (obj instanceof IFileWrapper) {
    130             return mFile.equals(((IFileWrapper)obj).mFile);
    131         }
    132 
    133         if (obj instanceof IFile) {
    134             return mFile.equals(obj);
    135         }
    136 
    137         return super.equals(obj);
    138     }
    139 
    140     @Override
    141     public int hashCode() {
    142         return mFile.hashCode();
    143     }
    144 
    145     @Override
    146     public IAbstractFolder getParentFolder() {
    147         IContainer p = mFile.getParent();
    148         if (p != null) {
    149             return new IFolderWrapper(p);
    150         }
    151 
    152         return null;
    153     }
    154 
    155     @Override
    156     public String toString() {
    157         return mFile.toString();
    158     }
    159 }
    160