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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 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.IOException;
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
{
private final 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;
}
// Delegate the actual reading to the data entry reader.
dataEntryReader.read(new ZipDataEntry(dataEntry,
zipEntry,
zipInputStream));
}
}
finally
{
dataEntry.closeInputStream();
}
}
}
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