030a13d8fe
4313887: New I/O: Improved filesystem interface 4607272: New I/O: Support asynchronous I/O Reviewed-by: sherman, chegar
79 lines
2.9 KiB
Java
79 lines
2.9 KiB
Java
/*
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* Copyright 2008-2009 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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import java.nio.file.*;
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import java.nio.file.attribute.*;
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import java.io.IOException;
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import java.util.*;
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/**
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* Invokes Files.walkFileTree to traverse a file tree and prints
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* each of the directories and files. The -L option causes symbolic
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* links to be followed.
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*/
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public class PrintFileTree {
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public static void main(String[] args) throws Exception {
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boolean followLinks = false;
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Path dir;
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if (args[0].equals("-L")) {
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followLinks = true;
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dir = Paths.get(args[1]);
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} else {
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dir = Paths.get(args[0]);
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}
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Set<FileVisitOption> options = new HashSet<FileVisitOption>();
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if (followLinks)
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options.add(FileVisitOption.FOLLOW_LINKS);
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Files.walkFileTree(dir, options, Integer.MAX_VALUE, new FileVisitor<FileRef>() {
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public FileVisitResult preVisitDirectory(FileRef dir) {
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System.out.println(dir);
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return FileVisitResult.CONTINUE;
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}
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public FileVisitResult preVisitDirectoryFailed(FileRef dir, IOException exc) {
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exc.printStackTrace();
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return FileVisitResult.CONTINUE;
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}
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public FileVisitResult visitFile(FileRef file, BasicFileAttributes attrs) {
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System.out.println(file);
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return FileVisitResult.CONTINUE;
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}
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public FileVisitResult postVisitDirectory(FileRef dir, IOException exc) {
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if (exc != null) {
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exc.printStackTrace();
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return FileVisitResult.TERMINATE;
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}
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return FileVisitResult.CONTINUE;
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}
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public FileVisitResult visitFileFailed(FileRef file, IOException exc) {
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exc.printStackTrace();
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return FileVisitResult.TERMINATE;
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}
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});
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}
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}
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