| /* |
| * 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.codehaus.groovy.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.Properties; |
| |
| import static org.codehaus.groovy.runtime.DefaultGroovyMethodsSupport.closeQuietly; |
| |
| /** |
| * Exposes the Groovy release information |
| */ |
| public class ReleaseInfo { |
| private static final Properties RELEASE_INFO = new Properties(); |
| private static final String RELEASE_INFO_FILE = "META-INF/groovy-release-info.properties"; |
| private static final String KEY_IMPLEMENTATION_VERSION = "ImplementationVersion"; |
| |
| static { |
| URL url = null; |
| ClassLoader cl = ReleaseInfo.class.getClassLoader(); |
| // we need no security check for getting the system class |
| // loader since if we do the invoker has a null loader, |
| // in which case no security check will be done |
| if (cl == null) cl = ClassLoader.getSystemClassLoader(); |
| if (cl instanceof URLClassLoader) { |
| // this avoids going through the parent classloaders/bootstrap |
| url = ((URLClassLoader) cl).findResource(RELEASE_INFO_FILE); |
| } else { |
| // fallback option as ClassLoader#findResource() is protected |
| url = cl.getResource(RELEASE_INFO_FILE); |
| } |
| if (url != null) { |
| InputStream is = null; |
| try { |
| is = URLStreams.openUncachedStream(url); |
| if (is != null) { |
| RELEASE_INFO.load(is); |
| } |
| } catch (IOException ioex) { |
| // ignore. In case of some exception, release info is not available |
| } finally { |
| closeQuietly(is); |
| } |
| } |
| } |
| |
| public static String getVersion() { |
| return get(KEY_IMPLEMENTATION_VERSION); |
| } |
| |
| public static Properties getAllProperties() { |
| return RELEASE_INFO; |
| } |
| |
| private static String get(String propName) { |
| String propValue = RELEASE_INFO.getProperty(propName); |
| return (propValue == null ? "" : propValue); |
| } |
| } |