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/*
* 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 java.util.jar;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* The {@code JarOutputStream} is used to write data in the {@code JarFile}
* format to an arbitrary output stream
*/
public class JarOutputStream extends ZipOutputStream {
private Manifest manifest;
/**
* Constructs a new {@code JarOutputStream} using an output stream. The
* content of the {@code Manifest} must match the JAR entry information
* written subsequently to the stream.
*
* @param os
* the {@code OutputStream} to write to
* @param mf
* the {@code Manifest} to output for this JAR file.
* @throws IOException
* if an error occurs creating the {@code JarOutputStream}.
*/
public JarOutputStream(OutputStream os, Manifest mf) throws IOException {
super(os);
if (mf == null) {
throw new NullPointerException();
}
manifest = mf;
ZipEntry ze = new ZipEntry(JarFile.MANIFEST_NAME);
putNextEntry(ze);
manifest.write(this);
closeEntry();
}
/**
* Constructs a new {@code JarOutputStream} using an arbitrary output
* stream.
*
* @param os
* the {@code OutputStream} to write to.
* @throws IOException
* if an error occurs creating the {@code JarOutputStream}.
*/
public JarOutputStream(OutputStream os) throws IOException {
super(os);
}
/**
* Writes the specified ZIP entry to the underlying stream. The previous
* entry is closed if it is still open.
*
* @param ze
* the {@code ZipEntry} to write to.
* @throws IOException
* if an error occurs writing to the entry.
* @see ZipEntry
*/
@Override
public void putNextEntry(ZipEntry ze) throws IOException {
super.putNextEntry(ze);
}
}
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