| /* |
| * 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.commons.compress.archivers.jar; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.commons.compress.archivers.ArchiveEntry; |
| import org.apache.commons.compress.archivers.zip.ZipArchiveEntry; |
| import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream; |
| |
| /** |
| * Implements an input stream that can read entries from jar files. |
| * |
| * @NotThreadSafe |
| */ |
| public class JarArchiveInputStream extends ZipArchiveInputStream { |
| |
| /** |
| * Creates an instance from the input stream using the default encoding. |
| * |
| * @param inputStream the input stream to wrap |
| */ |
| public JarArchiveInputStream( final InputStream inputStream ) { |
| super(inputStream); |
| } |
| |
| /** |
| * Creates an instance from the input stream using the specified encoding. |
| * |
| * @param inputStream the input stream to wrap |
| * @param encoding the encoding to use |
| * @since 1.10 |
| */ |
| public JarArchiveInputStream( final InputStream inputStream, final String encoding ) { |
| super(inputStream, encoding); |
| } |
| |
| public JarArchiveEntry getNextJarEntry() throws IOException { |
| final ZipArchiveEntry entry = getNextZipEntry(); |
| return entry == null ? null : new JarArchiveEntry(entry); |
| } |
| |
| @Override |
| public ArchiveEntry getNextEntry() throws IOException { |
| return getNextJarEntry(); |
| } |
| |
| /** |
| * Checks if the signature matches what is expected for a jar file |
| * (in this case it is the same as for a zip file). |
| * |
| * @param signature |
| * the bytes to check |
| * @param length |
| * the number of bytes to check |
| * @return true, if this stream is a jar archive stream, false otherwise |
| */ |
| public static boolean matches(final byte[] signature, final int length ) { |
| return ZipArchiveInputStream.matches(signature, length); |
| } |
| } |