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- /*
- * Copyright (C) 2012, Robin Rosenberg <robin.rosenberg@dewire.com>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.util;
-
- import java.io.File;
- import java.io.IOException;
- import java.nio.file.Files;
- import java.nio.file.LinkOption;
- import java.nio.file.NoSuchFileException;
- import java.nio.file.Path;
- import java.nio.file.attribute.BasicFileAttributeView;
- import java.nio.file.attribute.BasicFileAttributes;
- import java.nio.file.attribute.FileTime;
- import java.nio.file.attribute.PosixFileAttributeView;
- import java.nio.file.attribute.PosixFileAttributes;
- import java.nio.file.attribute.PosixFilePermission;
- import java.text.Normalizer;
- import java.text.Normalizer.Form;
-
- import org.eclipse.jgit.lib.Constants;
- import org.eclipse.jgit.util.FS.Attributes;
-
- /**
- * File utilities using Java 7 NIO2
- */
- public class FileUtil {
-
- static class Java7BasicAttributes extends Attributes {
-
- Java7BasicAttributes(FS fs, File fPath, boolean exists,
- boolean isDirectory, boolean isExecutable,
- boolean isSymbolicLink, boolean isRegularFile,
- long creationTime, long lastModifiedTime, long length) {
- super(fs, fPath, exists, isDirectory, isExecutable, isSymbolicLink,
- isRegularFile, creationTime, lastModifiedTime, length);
- }
- }
-
- /**
- * @param path
- * @return target path of the symlink
- * @throws IOException
- */
- public static String readSymlink(File path) throws IOException {
- Path nioPath = path.toPath();
- Path target = Files.readSymbolicLink(nioPath);
- String targetString = target.toString();
- if (SystemReader.getInstance().isWindows())
- targetString = targetString.replace('\\', '/');
- else if (SystemReader.getInstance().isMacOS())
- targetString = Normalizer.normalize(targetString, Form.NFC);
- return targetString;
- }
-
- /**
- * @param path
- * path of the symlink to be created
- * @param target
- * target of the symlink to be created
- * @throws IOException
- */
- public static void createSymLink(File path, String target)
- throws IOException {
- Path nioPath = path.toPath();
- if (Files.exists(nioPath, LinkOption.NOFOLLOW_LINKS))
- Files.delete(nioPath);
- if (SystemReader.getInstance().isWindows())
- target = target.replace('/', '\\');
- Path nioTarget = new File(target).toPath();
- Files.createSymbolicLink(nioPath, nioTarget);
- }
-
- /**
- * @param path
- * @return {@code true} if the passed path is a symlink
- */
- public static boolean isSymlink(File path) {
- Path nioPath = path.toPath();
- return Files.isSymbolicLink(nioPath);
- }
-
- /**
- * @param path
- * @return lastModified attribute for given path
- * @throws IOException
- */
- public static long lastModified(File path) throws IOException {
- Path nioPath = path.toPath();
- return Files.getLastModifiedTime(nioPath, LinkOption.NOFOLLOW_LINKS)
- .toMillis();
- }
-
- /**
- * @param path
- * @param time
- * @throws IOException
- */
- public static void setLastModified(File path, long time) throws IOException {
- Path nioPath = path.toPath();
- Files.setLastModifiedTime(nioPath, FileTime.fromMillis(time));
- }
-
- /**
- * @param path
- * @return {@code true} if the given path exists
- */
- public static boolean exists(File path) {
- Path nioPath = path.toPath();
- return Files.exists(nioPath, LinkOption.NOFOLLOW_LINKS);
- }
-
- /**
- * @param path
- * @return {@code true} if the given path is hidden
- * @throws IOException
- */
- public static boolean isHidden(File path) throws IOException {
- Path nioPath = path.toPath();
- return Files.isHidden(nioPath);
- }
-
- /**
- * @param path
- * @param hidden
- * @throws IOException
- */
- public static void setHidden(File path, boolean hidden) throws IOException {
- Path nioPath = path.toPath();
- Files.setAttribute(nioPath, "dos:hidden", Boolean.valueOf(hidden), //$NON-NLS-1$
- LinkOption.NOFOLLOW_LINKS);
- }
-
- /**
- * @param path
- * @return length of the given file
- * @throws IOException
- */
- public static long getLength(File path) throws IOException {
- Path nioPath = path.toPath();
- if (Files.isSymbolicLink(nioPath))
- return Files.readSymbolicLink(nioPath).toString()
- .getBytes(Constants.CHARSET).length;
- return Files.size(nioPath);
- }
-
- /**
- * @param path
- * @return {@code true} if the given file a directory
- */
- public static boolean isDirectory(File path) {
- Path nioPath = path.toPath();
- return Files.isDirectory(nioPath, LinkOption.NOFOLLOW_LINKS);
- }
-
- /**
- * @param path
- * @return {@code true} if the given file is a file
- */
- public static boolean isFile(File path) {
- Path nioPath = path.toPath();
- return Files.isRegularFile(nioPath, LinkOption.NOFOLLOW_LINKS);
- }
-
- /**
- * @param path
- * @return {@code true} if the given file can be executed
- */
- public static boolean canExecute(File path) {
- if (!isFile(path))
- return false;
- return path.canExecute();
- }
-
- /**
- * @param path
- * @throws IOException
- */
- public static void delete(File path) throws IOException {
- Path nioPath = path.toPath();
- Files.delete(nioPath);
- }
-
- static Attributes getFileAttributesBasic(FS fs, File path) {
- try {
- Path nioPath = path.toPath();
- BasicFileAttributes readAttributes = nioPath
- .getFileSystem()
- .provider()
- .getFileAttributeView(nioPath,
- BasicFileAttributeView.class,
- LinkOption.NOFOLLOW_LINKS).readAttributes();
- Attributes attributes = new FileUtil.Java7BasicAttributes(fs, path,
- true,
- readAttributes.isDirectory(),
- fs.supportsExecute() ? path.canExecute() : false,
- readAttributes.isSymbolicLink(),
- readAttributes.isRegularFile(), //
- readAttributes.creationTime().toMillis(), //
- readAttributes.lastModifiedTime().toMillis(),
- readAttributes.isSymbolicLink() ? Constants
- .encode(FileUtils.readSymLink(path)).length
- : readAttributes.size());
- return attributes;
- } catch (NoSuchFileException e) {
- return new FileUtil.Java7BasicAttributes(fs, path, false, false,
- false, false, false, 0L, 0L, 0L);
- } catch (IOException e) {
- return new Attributes(path, fs);
- }
- }
-
- /**
- * @param fs
- * @param path
- * @return file system attributes for the given file
- */
- public static Attributes getFileAttributesPosix(FS fs, File path) {
- try {
- Path nioPath = path.toPath();
- PosixFileAttributes readAttributes = nioPath
- .getFileSystem()
- .provider()
- .getFileAttributeView(nioPath,
- PosixFileAttributeView.class,
- LinkOption.NOFOLLOW_LINKS).readAttributes();
- Attributes attributes = new FileUtil.Java7BasicAttributes(
- fs,
- path,
- true, //
- readAttributes.isDirectory(), //
- readAttributes.permissions().contains(
- PosixFilePermission.OWNER_EXECUTE),
- readAttributes.isSymbolicLink(),
- readAttributes.isRegularFile(), //
- readAttributes.creationTime().toMillis(), //
- readAttributes.lastModifiedTime().toMillis(),
- readAttributes.size());
- return attributes;
- } catch (NoSuchFileException e) {
- return new FileUtil.Java7BasicAttributes(fs, path, false, false,
- false, false, false, 0L, 0L, 0L);
- } catch (IOException e) {
- return new Attributes(path, fs);
- }
- }
-
- /**
- * @param file
- * @return on Mac: NFC normalized {@link File}, otherwise the passed file
- */
- public static File normalize(File file) {
- if (SystemReader.getInstance().isMacOS()) {
- // TODO: Would it be faster to check with isNormalized first
- // assuming normalized paths are much more common
- String normalized = Normalizer.normalize(file.getPath(),
- Normalizer.Form.NFC);
- return new File(normalized);
- }
- return file;
- }
-
- /**
- * @param name
- * @return on Mac: NFC normalized form of given name
- */
- public static String normalize(String name) {
- if (SystemReader.getInstance().isMacOS()) {
- if (name == null)
- return null;
- return Normalizer.normalize(name, Normalizer.Form.NFC);
- }
- return name;
- }
-
- }
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