com.gitee.starblues.loader.jar.AbstractJarFile Maven / Gradle / Ivy
/*
* Copyright 2012-2021 the original author or authors.
* Copy from spring-boot-loader
*
* 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 com.gitee.starblues.loader.jar;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.security.Permission;
/**
* Base class for extended variants of {@link java.util.jar.JarFile}.
*
* @author Phillip Webb
*/
public abstract class AbstractJarFile extends java.util.jar.JarFile{
/**
* Create a new {@link AbstractJarFile}.
* @param file the root jar file.
* @throws IOException on IO error
*/
AbstractJarFile(File file) throws IOException {
super(file);
}
/**
* Return a URL that can be used to access this JAR file. NOTE: the specified URL
* cannot be serialized and or cloned.
* @return the URL
* @throws MalformedURLException if the URL is malformed
*/
abstract URL getUrl() throws MalformedURLException;
/**
* Return the {@link JarFileType} of this instance.
* @return the jar file type
*/
abstract JarFileType getType();
/**
* Return the security permission for this JAR.
* @return the security permission.
*/
abstract Permission getPermission();
/**
* Return an {@link InputStream} for the entire jar contents.
* @return the contents input stream
* @throws IOException on IO error
*/
abstract InputStream getInputStream() throws IOException;
/**
* The type of a {@link JarFile}.
*/
enum JarFileType {
/**
* DIRECT
*/
DIRECT,
/**
* NESTED_DIRECTORY
*/
NESTED_DIRECTORY,
/**
* NESTED_JAR
*/
NESTED_JAR
}
}