/* $Id: JarReader.java,v 1.3.2.1 2006/01/16 22:57:56 eric Exp $ * * ProGuard -- shrinking, optimization, and obfuscation of Java class files. * * Copyright (c) 2002-2006 Eric Lafortune (eric@graphics.cornell.edu) * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */package proguard.io;import java.io.*;import java.util.zip.*;/** * This DataEntryReader lets a given DataEntryReader read all data entries of * the read jar/war/zip data entries. * * @author Eric Lafortune */public class JarReader implements DataEntryReader{    DataEntryReader dataEntryReader;    /**     * Creates a new JarReader.     */    public JarReader(DataEntryReader dataEntryReader)    {        this.dataEntryReader = dataEntryReader;    }    // Implementation for DataEntryReader.    public void read(DataEntry dataEntry) throws IOException    {        ZipInputStream zipInputStream = new ZipInputStream(dataEntry.getInputStream());        try        {            // Get all entries from the input jar.            while (true)            {                // Can we get another entry?                ZipEntry zipEntry = zipInputStream.getNextEntry();                if (zipEntry == null)                {                    break;                }                if (!zipEntry.isDirectory())                {                    // Delegate the actual reading to the data entry reader.                    dataEntryReader.read(new ZipDataEntry(dataEntry,                                                          zipEntry,                                                          zipInputStream));                }            }        }        finally        {            dataEntry.closeInputStream();        }    }}