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JarFileWrapper.java
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JarFileWrapper.java
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/*
* Copyright 2012-2022 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.boot.loader.jar;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.Permission;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.Manifest;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
/**
* A wrapper used to create a copy of a {@link JarFile} so that it can be safely closed
* without closing the original.
*
* @author Phillip Webb
*/
class JarFileWrapper extends AbstractJarFile {
private final JarFile parent;
JarFileWrapper(JarFile parent) throws IOException {
super(parent.getRootJarFile().getFile());
this.parent = parent;
}
@Override
URL getUrl() throws MalformedURLException {
return this.parent.getUrl();
}
@Override
JarFileType getType() {
return this.parent.getType();
}
@Override
Permission getPermission() {
return this.parent.getPermission();
}
@Override
public Manifest getManifest() throws IOException {
return this.parent.getManifest();
}
@Override
public Enumeration<JarEntry> entries() {
return this.parent.entries();
}
@Override
public Stream<JarEntry> stream() {
return this.parent.stream();
}
@Override
public JarEntry getJarEntry(String name) {
return this.parent.getJarEntry(name);
}
@Override
public ZipEntry getEntry(String name) {
return this.parent.getEntry(name);
}
@Override
InputStream getInputStream() throws IOException {
return this.parent.getInputStream();
}
@Override
public synchronized InputStream getInputStream(ZipEntry ze) throws IOException {
return this.parent.getInputStream(ze);
}
@Override
public String getComment() {
return this.parent.getComment();
}
@Override
public int size() {
return this.parent.size();
}
@Override
public String toString() {
return this.parent.toString();
}
@Override
public String getName() {
return this.parent.getName();
}
static JarFile unwrap(java.util.jar.JarFile jarFile) {
if (jarFile instanceof JarFile) {
return (JarFile) jarFile;
}
if (jarFile instanceof JarFileWrapper) {
return unwrap(((JarFileWrapper) jarFile).parent);
}
throw new IllegalStateException("Not a JarFile or Wrapper");
}
}