| /* |
| * Copyright 2014-present Facebook, Inc. |
| * |
| * 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.facebook.buck.java.abi; |
| |
| |
| import com.google.common.base.Preconditions; |
| |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.SimpleFileVisitor; |
| import java.nio.file.attribute.BasicFileAttributes; |
| |
| class DirectoryWalker implements Walker { |
| private final Path root; |
| |
| public DirectoryWalker(Path root) { |
| this.root = Preconditions.checkNotNull(root); |
| } |
| |
| @Override |
| public void walk(final FileAction onFile) throws IOException { |
| SimpleFileVisitor<Path> visitor = new SimpleFileVisitor<Path>() { |
| @Override |
| public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException { |
| Path relativized = root.relativize(file); |
| |
| try ( |
| InputStream is = Files.newInputStream(file); |
| BufferedInputStream bis = new BufferedInputStream(is)) { |
| onFile.visit(relativized, bis); |
| } |
| |
| return FileVisitResult.CONTINUE; |
| } |
| }; |
| Files.walkFileTree(root, visitor); |
| } |
| } |