| /* |
| * 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 |
| * |
| * https://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.tools.ant.taskdefs.optional.depend; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.Vector; |
| |
| import org.apache.tools.ant.types.resources.ZipResource; |
| import org.apache.tools.ant.util.depend.AbstractAnalyzer; |
| import org.apache.tools.zip.ZipFile; |
| |
| /** |
| * An analyzer which uses the depend task's bytecode classes to analyze |
| * dependencies |
| * |
| */ |
| public class AntAnalyzer extends AbstractAnalyzer { |
| |
| /** |
| * Determine the dependencies of the configured root classes. |
| * |
| * @param files a vector to be populated with the files which contain |
| * the dependency classes |
| * @param classes a vector to be populated with the names of the |
| * dependency classes. |
| */ |
| @Override |
| protected void determineDependencies(Vector<File> files, Vector<String> classes) { |
| // we get the root classes and build up a set of |
| // classes upon which they depend |
| Set<String> dependencies = new HashSet<>(); |
| Set<File> containers = new HashSet<>(); |
| Set<String> toAnalyze = new HashSet<>(Collections.list(getRootClasses())); |
| Set<String> analyzedDeps = new HashSet<>(); |
| |
| int count = 0; |
| int maxCount = isClosureRequired() ? MAX_LOOPS : 1; |
| while (!toAnalyze.isEmpty() && count++ < maxCount) { |
| analyzedDeps.clear(); |
| for (String classname : toAnalyze) { |
| dependencies.add(classname); |
| File container = null; |
| try { |
| container = getClassContainer(classname); |
| } catch (IOException ioe) { |
| // ignore |
| } |
| if (container != null) { |
| containers.add(container); |
| |
| try (InputStream inStream = container.getName().endsWith(".class") |
| ? Files.newInputStream(Paths.get(container.getPath())) |
| : ZipResource.getZipEntryStream(new ZipFile(container.getPath(), "UTF-8"), |
| classname.replace('.', '/') + ".class")) { |
| ClassFile classFile = new ClassFile(); |
| classFile.read(inStream); |
| analyzedDeps.addAll(classFile.getClassRefs()); |
| } catch (IOException ioe) { |
| // ignore |
| } |
| } |
| } |
| |
| toAnalyze.clear(); |
| // now recover all the dependencies collected and add to the list. |
| analyzedDeps.stream().filter(className -> !dependencies.contains(className)) |
| .forEach(toAnalyze::add); |
| } |
| |
| // pick up the last round of dependencies that were determined |
| dependencies.addAll(analyzedDeps); |
| |
| files.removeAllElements(); |
| files.addAll(containers); |
| classes.removeAllElements(); |
| classes.addAll(dependencies); |
| } |
| |
| /** |
| * Indicate if this analyzer can determine dependent files. |
| * |
| * @return true if the analyzer provides dependency file information. |
| */ |
| @Override |
| protected boolean supportsFileDependencies() { |
| return true; |
| } |
| |
| } |