| /* |
| * Copyright (C) 2013 Google Inc. |
| * |
| * 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 |
| * |
| * 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 com.google.caliper.platform.jvm; |
| |
| import com.google.common.base.Joiner; |
| import com.google.common.base.Splitter; |
| import com.google.common.collect.ImmutableSet; |
| |
| import java.io.File; |
| import java.net.URISyntaxException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * Provides a class path containing all of the jars present on the local machine that are referenced |
| * by a given {@link ClassLoader}. |
| */ |
| final class EffectiveClassPath { |
| private EffectiveClassPath() {} |
| |
| private static final String PATH_SEPARATOR = System.getProperty("path.separator"); |
| private static final String JAVA_CLASS_PATH = System.getProperty("java.class.path"); |
| |
| static String getClassPathForClassLoader(ClassLoader classLoader) { |
| // Order of JAR files may have some significance. Try to preserve it. |
| LinkedHashSet<File> files = new LinkedHashSet<File>(); |
| for (String entry : Splitter.on(PATH_SEPARATOR).split(JAVA_CLASS_PATH)) { |
| files.add(new File(entry)); |
| } |
| files.addAll(getClassPathFiles(classLoader)); |
| |
| return Joiner.on(PATH_SEPARATOR).join(files); |
| } |
| |
| private static Set<File> getClassPathFiles(ClassLoader classLoader) { |
| ImmutableSet.Builder<File> files = ImmutableSet.builder(); |
| @Nullable ClassLoader parent = classLoader.getParent(); |
| if (parent != null) { |
| files.addAll(getClassPathFiles(parent)); |
| } |
| if (classLoader instanceof URLClassLoader) { |
| URLClassLoader urlClassLoader = (URLClassLoader) classLoader; |
| for (URL url : urlClassLoader.getURLs()) { |
| try { |
| files.add(new File(url.toURI())); |
| } catch (URISyntaxException e) { |
| // skip it then |
| } catch (IllegalArgumentException e) { |
| // skip it then |
| } |
| } |
| } |
| return files.build(); |
| } |
| } |