001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.classic.util; 015 016import java.util.ArrayList; 017import java.util.Iterator; 018import java.util.List; 019import java.util.ServiceLoader; 020 021import ch.qos.logback.core.util.EnvUtil; 022import ch.qos.logback.core.util.Loader; 023 024/** 025 * @author Ceki Gülcü 026 */ 027public class ClassicEnvUtil { 028 029 /* 030 * Used to replace the ClassLoader that the ServiceLoader uses for unit testing. 031 * We need this to mock the resources the ServiceLoader attempts to load from 032 * /META-INF/services thus keeping the projects src/test/resources clean (see 033 * src/test/resources/README.txt). 034 */ 035 //static ClassLoader testServiceLoaderClassLoader = null; 036 037 static public boolean isGroovyAvailable() { 038 return EnvUtil.isClassAvailable(ClassicEnvUtil.class, "groovy.lang.Binding"); 039 } 040// 041// private static ClassLoader getServiceLoaderClassLoader() { 042// return testServiceLoaderClassLoader == null ? Loader.getClassLoaderOfClass(ClassicEnvUtil.class) 043// : testServiceLoaderClassLoader; 044// } 045 046 public static <T> List<T> loadFromServiceLoader(Class<T> c, ClassLoader classLoader) { 047 ServiceLoader<T> loader = ServiceLoader.load(c, classLoader); 048 List<T> listOfT = new ArrayList<>(); 049 Iterator<T> it = loader.iterator(); 050 while(it.hasNext()) { 051 T t = it.next(); 052 listOfT.add(t); 053 } 054 return listOfT; 055 } 056 057}