| // Copyright 2013 Google Inc. All Rights Reserved. |
| // |
| // 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 com.google.enterprise.adaptor.fs; |
| |
| import com.google.enterprise.adaptor.DocId; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.DirectoryStream; |
| import java.nio.file.Files; |
| import java.nio.file.LinkOption; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.nio.file.attribute.FileTime; |
| |
| /** |
| * A {@link FileDelegate} implementation on top of Java NIO. |
| * This acts as a base class for other OS-specific implementations, |
| * such as {@link WindowsFileDelegate}. |
| */ |
| abstract class NioFileDelegate implements FileDelegate { |
| |
| @Override |
| public Path getPath(String pathname) throws IOException { |
| return Paths.get(pathname); |
| } |
| |
| @Override |
| public boolean isDirectory(Path doc) throws IOException { |
| return Files.isDirectory(doc, LinkOption.NOFOLLOW_LINKS); |
| } |
| |
| @Override |
| public boolean isRegularFile(Path doc) throws IOException { |
| return Files.isRegularFile(doc, LinkOption.NOFOLLOW_LINKS); |
| } |
| |
| @Override |
| public boolean isHidden(Path doc) throws IOException { |
| // Using File.isHidden() because NIO Files.isHidden(Path) does not |
| // consider hidden directories to be hidden. |
| return doc.toFile().isHidden(); |
| } |
| |
| @Override |
| public BasicFileAttributes readBasicAttributes(Path doc) throws IOException { |
| return Files.readAttributes(doc, BasicFileAttributes.class); |
| } |
| |
| @Override |
| public void setLastAccessTime(Path doc, FileTime time) throws IOException { |
| Files.setAttribute(doc, "lastAccessTime", time, LinkOption.NOFOLLOW_LINKS); |
| } |
| |
| @Override |
| public String probeContentType(Path doc) throws IOException { |
| return Files.probeContentType(doc); |
| } |
| |
| @Override |
| public InputStream newInputStream(Path doc) throws IOException { |
| return Files.newInputStream(doc); |
| } |
| |
| @Override |
| public DirectoryStream<Path> newDirectoryStream(Path doc) throws IOException { |
| return Files.newDirectoryStream(doc); |
| } |
| |
| @Override |
| public DocId newDocId(Path doc) throws IOException { |
| File file = doc.toFile().getCanonicalFile(); |
| String id = file.getAbsolutePath(); |
| if (file.isDirectory() && !id.endsWith("/")) { |
| id += "/"; |
| } |
| return new DocId(id); |
| } |
| } |