| /* Copyright 2004 The Apache Software Foundation |
| * |
| * 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 org.apache.xmlbeans.impl.config; |
| |
| import com.github.javaparser.ParserConfiguration; |
| import com.github.javaparser.symbolsolver.resolution.typesolvers.CombinedTypeSolver; |
| import com.github.javaparser.symbolsolver.resolution.typesolvers.JarTypeSolver; |
| import com.github.javaparser.symbolsolver.resolution.typesolvers.JavaParserTypeSolver; |
| import com.github.javaparser.utils.CollectionStrategy; |
| import com.github.javaparser.utils.ProjectRoot; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import java.io.IOException; |
| import java.nio.file.*; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static java.nio.file.FileVisitResult.CONTINUE; |
| import static java.nio.file.FileVisitResult.SKIP_SUBTREE; |
| |
| /** |
| * Collection strategy which works on a subdirectory and determines the root source directory |
| * for further lookups |
| */ |
| class ChildSolverCollectionStrategy implements CollectionStrategy { |
| private static final Logger LOG = LogManager.getLogger(ChildSolverCollectionStrategy.class); |
| |
| private final ParserConfiguration config; |
| private final PathMatcher javaMatcher = getPathMatcher("glob:**.java"); |
| private final PathMatcher jarMatcher = getPathMatcher("glob:**.jar"); |
| private final List<Path> roots = new ArrayList<>(); |
| private final CombinedTypeSolver combinedTypeSolver; |
| |
| ChildSolverCollectionStrategy(ParserConfiguration config, CombinedTypeSolver combinedTypeSolver) { |
| this.config = config; |
| this.combinedTypeSolver = combinedTypeSolver; |
| } |
| |
| @Override |
| public ParserConfiguration getParserConfiguration() { |
| return config; |
| } |
| |
| @Override |
| public ProjectRoot collect(Path path) { |
| try { |
| Files.walkFileTree(path, new FileVisitor()); |
| } catch (IOException e) { |
| LOG.atWarn().withThrowable(e).log("Unable to walk {}",path); |
| } |
| return roots.isEmpty() ? null : new ProjectRoot(roots.get(roots.size()-1), config); |
| } |
| |
| public ProjectRoot collectAll() { |
| Path root = null; |
| for (Path p : roots) { |
| if (root == null) { |
| root = p; |
| } else { |
| root = commonRoot(root, p); |
| if (root == null) { |
| break; |
| } |
| } |
| } |
| |
| if (root == null) { |
| throw new IllegalStateException("Unable to construct a common project root - giving up."); |
| } |
| |
| ProjectRoot pr = new ProjectRoot(root, config); |
| roots.forEach(pr::addSourceRoot); |
| return pr; |
| } |
| |
| private static Path commonRoot(Path path1, Path path2) { |
| List<Path> l1 = new ArrayList<>(); |
| path1.toAbsolutePath().iterator().forEachRemaining(l1::add); |
| List<Path> l2 = new ArrayList<>(); |
| path2.toAbsolutePath().iterator().forEachRemaining(l2::add); |
| l1.retainAll(l2); |
| return l1.isEmpty() ? null : l1.get(l1.size()-1); |
| } |
| |
| private CombinedTypeSolver getSolver() { |
| return combinedTypeSolver; |
| } |
| |
| private class FileVisitor extends SimpleFileVisitor<Path> { |
| @Override |
| public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { |
| if (javaMatcher.matches(file)) { |
| if (roots.stream().map(Path::toAbsolutePath).noneMatch(file.toAbsolutePath()::startsWith)) { |
| getRoot(file).ifPresent(r -> { |
| getSolver().add(new JavaParserTypeSolver(r, getParserConfiguration())); |
| roots.add(r); |
| }); |
| } |
| } else if (jarMatcher.matches(file)) { |
| getSolver().add(new JarTypeSolver(file)); |
| } |
| return CONTINUE; |
| } |
| |
| @Override |
| public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException { |
| return Files.isHidden(dir) ? SKIP_SUBTREE : CONTINUE; |
| } |
| } |
| } |