| /* |
| * 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.ftpserver.command.impl.listing; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.ftpserver.ftplet.FileSystemView; |
| import org.apache.ftpserver.ftplet.FtpException; |
| import org.apache.ftpserver.ftplet.FtpFile; |
| |
| /** |
| * <strong>Internal class, do not use directly.</strong> |
| * |
| * This class prints file listing. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class DirectoryLister { |
| |
| private String traverseFiles(final List<? extends FtpFile> files, |
| final FileFilter filter, final FileFormater formater) { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append(traverseFiles(files, filter, formater, true)); |
| sb.append(traverseFiles(files, filter, formater, false)); |
| |
| return sb.toString(); |
| } |
| |
| private String traverseFiles(final List<? extends FtpFile> files, |
| final FileFilter filter, final FileFormater formater, |
| boolean matchDirs) { |
| StringBuilder sb = new StringBuilder(); |
| for (FtpFile file : files) { |
| if (file == null) { |
| continue; |
| } |
| |
| if (filter == null || filter.accept(file)) { |
| if (file.isDirectory() == matchDirs) { |
| sb.append(formater.format(file)); |
| } |
| } |
| } |
| |
| return sb.toString(); |
| } |
| |
| public String listFiles(final ListArgument argument, |
| final FileSystemView fileSystemView, final FileFormater formater) |
| throws IOException { |
| |
| StringBuilder sb = new StringBuilder(); |
| |
| // get all the file objects |
| List<? extends FtpFile> files = listFiles(fileSystemView, argument.getFile()); |
| if (files != null) { |
| FileFilter filter = null; |
| if (!argument.hasOption('a')) { |
| filter = new VisibleFileFilter(); |
| } |
| if (argument.getPattern() != null) { |
| filter = new RegexFileFilter(argument.getPattern(), filter); |
| } |
| |
| sb.append(traverseFiles(files, filter, formater)); |
| } |
| |
| return sb.toString(); |
| } |
| |
| /** |
| * Get the file list. Files will be listed in alphabetlical order. |
| */ |
| private List<? extends FtpFile> listFiles(FileSystemView fileSystemView, String file) { |
| List <? extends FtpFile> files = null; |
| try { |
| FtpFile virtualFile = fileSystemView.getFile(file); |
| if (virtualFile.isFile()) { |
| List<FtpFile> auxFiles = new ArrayList<>(); |
| auxFiles.add(virtualFile); |
| files = auxFiles; |
| } else { |
| files = virtualFile.listFiles(); |
| } |
| } catch (FtpException ex) { |
| } |
| return files; |
| } |
| } |