| /* |
| * Licensed to the Apache Software Foundation (ASF) under one * |
| * or more contributor license agreements. See the NOTICE file * |
| * distributed with this work for additional information * |
| * regarding copyright ownership. The ASF licenses this file * |
| * to you 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 org.apache.rat.walker; |
| |
| import org.apache.rat.api.Document; |
| import org.apache.rat.api.RatException; |
| import org.apache.rat.document.impl.FileDocument; |
| import org.apache.rat.report.IReportable; |
| import org.apache.rat.report.RatReport; |
| |
| import java.io.File; |
| import java.io.FilenameFilter; |
| import java.util.Arrays; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Walks directories. |
| */ |
| public class DirectoryWalker extends Walker implements IReportable { |
| |
| protected static final FileNameComparator COMPARATOR = new FileNameComparator(); |
| |
| public DirectoryWalker(File file) { |
| this(file, (FilenameFilter) null); |
| } |
| |
| /** |
| * Constructs a walker. |
| * |
| * @param file not null |
| * @param filter filters input files (optional), |
| * or null when no filtering should be performed |
| */ |
| public DirectoryWalker(File file, final FilenameFilter filter) { |
| super(file.getPath(), file, filter); |
| } |
| |
| public DirectoryWalker(File file, final Pattern ignoreNameRegex) { |
| super(file.getPath(), file, regexFilter(ignoreNameRegex)); |
| } |
| |
| public boolean isRestricted() { |
| return false; |
| } |
| |
| /** |
| * Process a directory, restricted directories will be ignored. |
| * |
| * @param report The report to process the directory with |
| * @param file the directory to process |
| * @throws RatException |
| */ |
| private void processDirectory(RatReport report, final File file) throws RatException { |
| if (!isRestricted(file)) { |
| process(report, file); |
| } |
| } |
| |
| /** |
| * Run a report over all files and directories in this DirectoryWalker, |
| * ignoring any files/directories set to be ignored. |
| * |
| * @param report the defined RatReport to run on this Directory walker. |
| */ |
| public void run(final RatReport report) throws RatException { |
| process(report, file); |
| } |
| |
| /** |
| * Process a directory, ignoring any files/directories set to be ignored. |
| * |
| * @param report the report to use in processing |
| * @param file the run the report against |
| * @throws RatException |
| */ |
| private void process(final RatReport report, final File file) throws RatException { |
| final File[] files = file.listFiles(); |
| if (files != null) { |
| Arrays.sort(files, COMPARATOR); |
| // breadth first traversal |
| processNonDirectories(report, files); |
| processDirectories(report, files); |
| } |
| } |
| |
| /** |
| * Process all directories in a set of file objects, ignoring any directories set to be ignored. |
| * |
| * @param report the report to use in processing |
| * @param files the files to process (only directories will be processed) |
| * @throws RatException |
| */ |
| private void processDirectories(final RatReport report, final File[] files) throws RatException { |
| for (final File file : files) { |
| if (!ignored(file) && file.isDirectory()) { |
| processDirectory(report, file); |
| } |
| } |
| } |
| |
| /** |
| * Process all files in a set of file objects, ignoring any files set to be ignored. |
| * |
| * @param report the report to use in processing |
| * @param files the files to process (only files will be processed) |
| * @throws RatException |
| */ |
| private void processNonDirectories(final RatReport report, final File[] files) throws RatException { |
| for (final File file : files) { |
| if (!ignored(file) && !file.isDirectory()) { |
| report(report, file); |
| } |
| } |
| |
| } |
| |
| /** |
| * Report on the given file. |
| * |
| * @param report the report to process the file with |
| * @param file the file to be reported on |
| * @throws RatException |
| */ |
| private void report(final RatReport report, File file) throws RatException { |
| |
| Document document = new FileDocument(file); |
| report.report(document); |
| |
| } |
| } |