Java Jar File Find getJarManifest(File file)

Description

get Jar Manifest

License

Open Source License

Declaration

public static Manifest getJarManifest(File file) throws IOException 

Method Source Code

//package com.java2s;
/*// ww w.j  ava  2s.c o  m
 * Copyright (c) 2006-2012 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Nuxeo - initial API and implementation
 *
 * $Id$
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.jar.JarFile;
import java.util.jar.Manifest;

public class Main {
    public static Manifest getJarManifest(File file) throws IOException {
        JarFile jar = null;
        try {
            jar = new JarFile(file);
            return jar.getManifest();
        } finally {
            if (jar != null) {
                jar.close();
            }
        }
    }

    public static Manifest getManifest(File file) {
        try {
            if (file.isDirectory()) {
                return getDirectoryManifest(file);
            } else {
                return getJarManifest(file);
            }
        } catch (IOException ignored) {
            return null;
        }
    }

    public static Manifest getManifest(URL url) {
        try {
            return new JarFile(new File(url.getFile())).getManifest();
        } catch (IOException e) {
            return null;
        }
    }

    public static Manifest getDirectoryManifest(File file) throws IOException {
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(new File(file, "META-INF/MANIFEST.MF"));
            return new Manifest(fis);
        } finally {
            if (fis != null) {
                fis.close();
            }
        }
    }
}

Related

1. getJarFolder(Class clazz)
2. getJarLocation()
3. getJarLocation(Class classFromJar)
4. getJarLocation(Class clazz)
5. getJarLocation(final Class cClass)
6. getJarOrDir(Class mainClass)
7. getJarPath(Class caller)
8. getJarPath(String pkg)
9. getJarPathOf(Class classObject)