| /* |
| * 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.apache.dubbo.maven.plugin; |
| |
| import java.io.File; |
| import java.net.JarURLConnection; |
| import java.net.URL; |
| import java.util.Enumeration; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.function.Consumer; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarFile; |
| |
| public class ClassFinder { |
| |
| public Set<String> findClassSet(String packageName, Consumer<String> consumer) { |
| packageName = packageName.replace(".", "/"); |
| try { |
| ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); |
| Enumeration resources = classLoader.getResources(packageName); |
| Set<String> result = new HashSet<>(); |
| while (resources.hasMoreElements()) { |
| URL resource = (URL) resources.nextElement(); |
| if (resource != null) { |
| String protocol = resource.getProtocol(); |
| if ("file".equals(protocol)) { |
| findClassesByFile(packageName, resource.getPath(), result); |
| } else if ("jar".equals(protocol)) { |
| JarFile jar = ((JarURLConnection) resource.openConnection()).getJarFile(); |
| consumer.accept("findClassSet jar:" + jar.getName()); |
| findClassesByJar(packageName, jar, result); |
| } |
| } |
| } |
| return result; |
| } catch (Throwable ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| private void findClassesByFile(String packageName, String resource, Set<String> result) { |
| File directory = new File(resource); |
| File[] listFiles = directory.listFiles(); |
| for (File file : listFiles) { |
| if (file.isDirectory()) { |
| findClassesByFile(packageName, file.getPath(), result); |
| } else { |
| String path = file.getPath(); |
| if (path.endsWith(".class")) { |
| int packageIndex = path.indexOf(packageName.replace("/", File.separator)); |
| String classPath = path.substring(packageIndex, path.length() - 6); |
| result.add(classPath.replace(File.separator, ".")); |
| } |
| } |
| } |
| } |
| |
| private static void findClassesByJar(String packageName, JarFile jar, Set<String> classes) { |
| Enumeration<JarEntry> entry = jar.entries(); |
| JarEntry jarEntry; |
| String name; |
| while (entry.hasMoreElements()) { |
| jarEntry = entry.nextElement(); |
| name = jarEntry.getName(); |
| if (name.charAt(0) == '/') { |
| name = name.substring(1); |
| } |
| if (jarEntry.isDirectory() || !name.startsWith(packageName) || !name.endsWith(".class")) { |
| continue; |
| } |
| String className = name.substring(0, name.length() - 6); |
| classes.add(className.replace("/", ".")); |
| } |
| } |
| } |