/*
 * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package jdk.tools.jaotc.collect;

import static java.nio.file.FileVisitResult.CONTINUE;

import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.Iterator;

FileVisitor implementation to find class files recursively.
/** * {@link FileVisitor} implementation to find class files recursively. */
public final class FileSystemFinder extends SimpleFileVisitor<Path> implements Iterable<Path> { private final ArrayList<Path> fileNames = new ArrayList<>(); private final PathMatcher filter; public FileSystemFinder(Path combinedPath, PathMatcher filter) { this.filter = filter; try { Files.walkFileTree(combinedPath, this); } catch (IOException e) { throw new InternalError(e); } }
Compares the glob pattern against the file name.
/** * Compares the glob pattern against the file name. */
private void find(Path file) { Path name = file.getFileName(); if (name != null && filter.matches(name)) { fileNames.add(file); } } @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { find(file); return CONTINUE; } @Override public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) { find(dir); return CONTINUE; } @Override public Iterator<Path> iterator() { return fileNames.iterator(); } }