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 
IFileWrapper(IFile file)42     public IFileWrapper(IFile file) {
43         mFile = file;
44     }
45 
46     @Override
getContents()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
setContents(InputStream source)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
getOutputStream()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