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      1 /*
      2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
      3  *             of Java bytecode.
      4  *
      5  * Copyright (c) 2002-2009 Eric Lafortune (eric (at) graphics.cornell.edu)
      6  *
      7  * This program is free software; you can redistribute it and/or modify it
      8  * under the terms of the GNU General Public License as published by the Free
      9  * Software Foundation; either version 2 of the License, or (at your option)
     10  * any later version.
     11  *
     12  * This program is distributed in the hope that it will be useful, but WITHOUT
     13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
     15  * more details.
     16  *
     17  * You should have received a copy of the GNU General Public License along
     18  * with this program; if not, write to the Free Software Foundation, Inc.,
     19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
     20  */
     21 package proguard.io;
     22 
     23 import proguard.classfile.ClassConstants;
     24 
     25 import java.io.*;
     26 
     27 /**
     28  * This <code>DataEntry</code> represents a file.
     29  *
     30  * @author Eric Lafortune
     31  */
     32 public class FileDataEntry implements DataEntry
     33 {
     34     private final File        directory;
     35     private final File        file;
     36     private InputStream inputStream;
     37 
     38 
     39     public FileDataEntry(File directory,
     40                          File file)
     41     {
     42         this.directory = directory;
     43         this.file      = file;
     44     }
     45 
     46 
     47     // Implementations for DataEntry.
     48 
     49     public String getName()
     50     {
     51         // Chop the directory name from the file name and get the right separators.
     52         return file.equals(directory) ?
     53             file.getName() :
     54             file.getPath()
     55             .substring(directory.getPath().length() + File.separator.length())
     56             .replace(File.separatorChar, ClassConstants.INTERNAL_PACKAGE_SEPARATOR);
     57     }
     58 
     59 
     60     public boolean isDirectory()
     61     {
     62         return file.isDirectory();
     63     }
     64 
     65 
     66     public InputStream getInputStream() throws IOException
     67     {
     68         if (inputStream == null)
     69         {
     70             inputStream = new BufferedInputStream(new FileInputStream(file));
     71         }
     72 
     73         return inputStream;
     74     }
     75 
     76 
     77     public void closeInputStream() throws IOException
     78     {
     79         inputStream.close();
     80         inputStream = null;
     81     }
     82 
     83 
     84     public DataEntry getParent()
     85     {
     86         return null;
     87     }
     88 
     89 
     90     // Implementations for Object.
     91 
     92     public String toString()
     93     {
     94         return getName();
     95     }
     96 }
     97