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1 /*
2  * Copyright (C) 2009 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
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 android.cts.util;
18 
19 import android.content.Context;
20 
21 import java.io.File;
22 import java.io.FileOutputStream;
23 import java.io.IOException;
24 import java.io.InputStream;
25 import java.io.OutputStream;
26 import java.util.ArrayList;
27 
28 /**
29  * The Class FileCopyHelper is used to copy files from resources to the
30  * application directory and responsible for deleting the files.
31  *
32  * @see MediaStore_VideoTest
33  * @see MediaStore_Images_MediaTest
34  * @see MediaStore_Images_ThumbnailsTest
35  */
36 public class FileCopyHelper {
37     /** The context. */
38     private Context mContext;
39 
40     /** The files added. */
41     private ArrayList<String> mFilesList;
42 
43     /**
44      * Instantiates a new file copy helper.
45      *
46      * @param context the context
47      */
FileCopyHelper(Context context)48     public FileCopyHelper(Context context) {
49         mContext = context;
50         mFilesList = new ArrayList<String>();
51     }
52 
53     /**
54      * Copy the file from the resources with a filename .
55      *
56      * @param resId the res id
57      * @param fileName the file name
58      *
59      * @return the absolute path of the destination file
60      * @throws IOException
61      */
copy(int resId, String fileName)62     public String copy(int resId, String fileName) throws IOException {
63         InputStream source = mContext.getResources().openRawResource(resId);
64         OutputStream target = mContext.openFileOutput(fileName, Context.MODE_WORLD_READABLE);
65         copyFile(source, target);
66         mFilesList.add(fileName);
67         return mContext.getFileStreamPath(fileName).getAbsolutePath();
68     }
69 
copyToExternalStorage(int resId, File path)70     public void copyToExternalStorage(int resId, File path) throws IOException {
71         InputStream source = mContext.getResources().openRawResource(resId);
72         OutputStream target = new FileOutputStream(path);
73         copyFile(source, target);
74     }
75 
copyFile(InputStream source, OutputStream target)76     private void copyFile(InputStream source, OutputStream target) throws IOException {
77         try {
78             byte[] buffer = new byte[1024];
79             for (int len = source.read(buffer); len > 0; len = source.read(buffer)) {
80                 target.write(buffer, 0, len);
81             }
82         } finally {
83             if (source != null) {
84                 source.close();
85             }
86             if (target != null) {
87                 target.close();
88             }
89         }
90     }
91 
92     /**
93      * Delete all the files copied by the helper.
94      */
clear()95     public void clear(){
96         for (String path : mFilesList) {
97             mContext.deleteFile(path);
98         }
99     }
100 }
101