/*
* 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.
*/
package com.hp.hpl.jena.util;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.hp.hpl.jena.shared.JenaException;
/** Location files in a zip file */
public class LocatorZip implements Locator
{
static Logger log = LoggerFactory.getLogger(LocatorZip.class) ;
String zipFileName = null ;
ZipFile zipFile = null ;
public LocatorZip(String zfn)
{
try {
zipFileName = zfn ;
zipFile = new ZipFile(zipFileName) ;
} catch (IOException ex)
{
throw new JenaException("Problems accessing "+zipFileName, ex) ;
}
}
@Override
public TypedStream open(String filenameOrURI)
{
ZipEntry entry = zipFile.getEntry(filenameOrURI) ;
if ( entry == null )
{
if ( FileManager.logAllLookups && log.isDebugEnabled() )
log.debug("Not found: "+zipFileName+" : "+filenameOrURI) ;
return null ;
}
try
{
InputStream in = zipFile.getInputStream(entry) ;
if ( in == null )
{
if ( FileManager.logAllLookups && log.isTraceEnabled() )
log.trace("Not found: "+filenameOrURI) ;
return null ;
}
if ( FileManager.logAllLookups && log.isTraceEnabled() )
log.trace("Found: "+filenameOrURI) ;
return new TypedStream(in) ;
}
catch (IOException ex)
{
log.warn("IO Exception opening zip entry: " + filenameOrURI);
return null;
}
}
public String getZipFileName() { return zipFileName ; }
@Override
public String getName() { return "LocatorZip("+zipFileName+")" ; }
}