package org.apache.maven.index.util.zip;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import de.schlichtherle.truezip.zip.ZipEntry;
import de.schlichtherle.truezip.zip.ZipFile;
public class TrueZipZipFileHandle
extends AbstractZipHandle
implements ZipHandle
{
private final ZipFile zipFile;
public TrueZipZipFileHandle( final File targetFile )
throws IOException
{
super( targetFile );
this.zipFile = new ZipFile( targetFile );
}
protected ZipFile getZipFile()
{
return zipFile;
}
public boolean hasEntry( String path )
throws IOException
{
return getZipFile().getEntry( path ) != null;
}
public List<String> getEntries()
{
return getEntries( new EntryNameFilter()
{
public boolean accepts( String entryName )
{
return true;
}
} );
}
public List<String> getEntries( EntryNameFilter filter )
{
ArrayList<String> entries = new ArrayList<String>();
Enumeration<? extends ZipEntry> en = getZipFile().entries();
while ( en.hasMoreElements() )
{
final ZipEntry e = en.nextElement();
final String name = e.getName();
if ( filter != null && !filter.accepts( name ) )
{
continue;
}
entries.add( name );
}
return entries;
}
public InputStream getEntryContent( String path )
throws IOException
{
ZipEntry entry = getZipFile().getEntry( path );
if ( entry != null )
{
return getZipFile().getInputStream( entry );
}
else
{
return null;
}
}
public void close()
throws IOException
{
getZipFile().close();
}
}