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      1 /*
      2  * Copyright (C) 2008 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 com.android.sdklib.io;
     18 
     19 
     20 import java.io.File;
     21 import java.io.FileInputStream;
     22 import java.io.FileNotFoundException;
     23 import java.io.FileOutputStream;
     24 import java.io.IOException;
     25 import java.io.InputStream;
     26 import java.io.OutputStream;
     27 import java.net.URI;
     28 
     29 /**
     30  * An implementation of {@link IAbstractFile} extending {@link File}.
     31  */
     32 public class FileWrapper extends File implements IAbstractFile {
     33     private static final long serialVersionUID = 1L;
     34 
     35     /**
     36      * Creates a new File instance from a parent abstract pathname and a child pathname string.
     37      * @param parent the parent pathname
     38      * @param child the child name
     39      *
     40      * @see File#File(File, String)
     41      */
     42     public FileWrapper(File parent, String child) {
     43         super(parent, child);
     44     }
     45 
     46     /**
     47      * Creates a new File instance by converting the given pathname string into an abstract
     48      * pathname.
     49      * @param pathname the pathname
     50      *
     51      * @see File#File(String)
     52      */
     53     public FileWrapper(String pathname) {
     54         super(pathname);
     55     }
     56 
     57     /**
     58      * Creates a new File instance from a parent abstract pathname and a child pathname string.
     59      * @param parent the parent pathname
     60      * @param child the child name
     61      *
     62      * @see File#File(String, String)
     63      */
     64     public FileWrapper(String parent, String child) {
     65         super(parent, child);
     66     }
     67 
     68     /**
     69      * Creates a new File instance by converting the given <code>file:</code> URI into an
     70      * abstract pathname.
     71      * @param uri An absolute, hierarchical URI with a scheme equal to "file", a non-empty path
     72      * component, and undefined authority, query, and fragment components
     73      *
     74      * @see File#File(URI)
     75      */
     76     public FileWrapper(URI uri) {
     77         super(uri);
     78     }
     79 
     80     /**
     81      * Creates a new File instance matching a give {@link File} object.
     82      * @param file the file to match
     83      */
     84     public FileWrapper(File file) {
     85         super(file.getAbsolutePath());
     86     }
     87 
     88     public InputStream getContents() throws StreamException {
     89         try {
     90             return new FileInputStream(this);
     91         } catch (FileNotFoundException e) {
     92             throw new StreamException(e);
     93         }
     94     }
     95 
     96     public void setContents(InputStream source) throws StreamException {
     97         FileOutputStream fos = null;
     98         try {
     99             fos = new FileOutputStream(this);
    100 
    101             byte[] buffer = new byte[1024];
    102             int count = 0;
    103             while ((count = source.read(buffer)) != -1) {
    104                 fos.write(buffer, 0, count);
    105             }
    106         } catch (IOException e) {
    107             throw new StreamException(e);
    108         } finally {
    109             if (fos != null) {
    110                 try {
    111                     fos.close();
    112                 } catch (IOException e) {
    113                     throw new StreamException(e);
    114                 }
    115             }
    116         }
    117     }
    118 
    119     public OutputStream getOutputStream() throws StreamException {
    120         try {
    121             return new FileOutputStream(this);
    122         } catch (FileNotFoundException e) {
    123             throw new StreamException(e);
    124         }
    125     }
    126 
    127     public PreferredWriteMode getPreferredWriteMode() {
    128         return PreferredWriteMode.OUTPUTSTREAM;
    129     }
    130 
    131     public String getOsLocation() {
    132         return getAbsolutePath();
    133     }
    134 
    135     @Override
    136     public boolean exists() {
    137         return isFile();
    138     }
    139 
    140     public IAbstractFolder getParentFolder() {
    141         String p = this.getParent();
    142         if (p == null) {
    143             return null;
    144         }
    145         return new FolderWrapper(p);
    146     }
    147 }
    148