| /* |
| * Copyright (C) 2008, Google Inc. |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.pgm; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.text.MessageFormat; |
| import java.util.jar.JarFile; |
| import java.util.jar.Manifest; |
| |
| import org.eclipse.jgit.pgm.internal.CLIText; |
| |
| @Command(common = true, usage = "usage_DisplayTheVersionOfJgit") |
| class Version extends TextBuiltin { |
| @Override |
| protected void run() throws Exception { |
| // read the Implementation-Version from Manifest |
| String version = getImplementationVersion(); |
| |
| // if Implementation-Version is not available then try reading |
| // Bundle-Version |
| if (version == null) |
| version = getBundleVersion(); |
| |
| // if both Implementation-Version and Bundle-Version are not available |
| // then throw an exception |
| if (version == null) |
| throw die(CLIText.get().cannotReadPackageInformation); |
| |
| outw.println(MessageFormat.format(CLIText.get().jgitVersion, version)); |
| } |
| |
| @Override |
| protected final boolean requiresRepository() { |
| return false; |
| } |
| |
| private String getImplementationVersion() { |
| Package pkg = getClass().getPackage(); |
| return (pkg == null) ? null : pkg.getImplementationVersion(); |
| } |
| |
| private String getBundleVersion() { |
| ClassLoader cl = getClass().getClassLoader(); |
| if (cl instanceof URLClassLoader) { |
| URL url = ((URLClassLoader) cl).findResource(JarFile.MANIFEST_NAME); |
| if (url != null) |
| return getBundleVersion(url); |
| } |
| return null; |
| } |
| |
| private static String getBundleVersion(URL url) { |
| try { |
| InputStream is = url.openStream(); |
| try { |
| Manifest manifest = new Manifest(is); |
| return manifest.getMainAttributes().getValue("Bundle-Version"); //$NON-NLS-1$ |
| } finally { |
| is.close(); |
| } |
| } catch (IOException e) { |
| // do nothing - will return null |
| } |
| return null; |
| } |
| } |