/*
* 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 org.apache.tika.parser.pkg;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.io.input.CloseShieldInputStream;
import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.pkg.bzip2.CBZip2InputStream;
import org.apache.tika.sax.XHTMLContentHandler;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* Gzip parser.
*/
public class Bzip2Parser extends PackageParser {
/**
* Parses the given stream as a gzip file.
*/
public void parse(
InputStream stream, ContentHandler handler, Metadata metadata)
throws IOException, SAXException, TikaException {
// The CBZip2InputStream class does not want to see the magic BZ header
if (stream.read() != 'B' || stream.read() != 'Z') {
throw new TikaException("Invalid BZip2 magic header");
}
metadata.set(Metadata.CONTENT_TYPE, "application/x-bzip");
XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
xhtml.startDocument();
// At the end we want to close the bzip2 stream to release any associated
// resources, but the underlying document stream should not be closed
InputStream gzip =
new CBZip2InputStream(new CloseShieldInputStream(stream));
try {
Metadata entrydata = new Metadata();
String name = metadata.get(Metadata.RESOURCE_NAME_KEY);
if (name != null) {
if (name.endsWith(".tbz")) {
name = name.substring(0, name.length() - 4) + ".tar";
} else if (name.endsWith(".tbz2")) {
name = name.substring(0, name.length() - 5) + ".tar";
} else if (name.endsWith(".bz")) {
name = name.substring(0, name.length() - 3);
} else if (name.endsWith(".bz2")) {
name = name.substring(0, name.length() - 4);
}
entrydata.set(Metadata.RESOURCE_NAME_KEY, name);
}
parseEntry(gzip, xhtml, entrydata);
} finally {
gzip.close();
}
xhtml.endDocument();
}
}