001/* 002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * bstefanescu 016 * 017 * $Id$ 018 */ 019 020package org.nuxeo.ecm.webengine.model.impl; 021 022import java.io.File; 023import java.io.FileFilter; 024import java.io.IOException; 025import java.util.ArrayList; 026import java.util.Arrays; 027import java.util.List; 028 029import org.apache.commons.logging.Log; 030import org.apache.commons.logging.LogFactory; 031 032/** 033 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 034 */ 035public class DirectoryStack { 036 037 private static final Log log = LogFactory.getLog(DirectoryStack.class); 038 039 protected final List<File> dirs; 040 041 public DirectoryStack() { 042 dirs = new ArrayList<File>(); 043 } 044 045 public DirectoryStack(List<File> entries) { 046 this(); 047 dirs.addAll(entries); 048 } 049 050 public List<File> getDirectories() { 051 return dirs; 052 } 053 054 public boolean isEmpty() { 055 return dirs.isEmpty(); 056 } 057 058 public void addDirectory(File dir) throws IOException { 059 dirs.add(dir.getCanonicalFile()); 060 } 061 062 /** 063 * Gets the file given its name in this virtual directory. 064 * <p> 065 * The canonical file is returned if any file is found 066 * 067 * @param name the file name to lookup 068 * @return the file in the canonical form 069 * @throws IOException 070 */ 071 public File getFile(String name) throws IOException { 072 for (File entry : dirs) { 073 File file = new File(entry, name); 074 if (file.exists()) { 075 return file.getCanonicalFile(); 076 } 077 } 078 return null; 079 } 080 081 public File[] listFiles() { 082 List<File> result = new ArrayList<File>(); 083 for (File entry : dirs) { 084 File[] files = entry.listFiles(); 085 result.addAll(Arrays.asList(files)); 086 } 087 return result.toArray(new File[result.size()]); 088 } 089 090 public File[] listFiles(FileFilter filter) { 091 List<File> result = new ArrayList<File>(); 092 for (File entry : dirs) { 093 File[] files = entry.listFiles(filter); 094 result.addAll(Arrays.asList(files)); 095 } 096 return result.toArray(new File[result.size()]); 097 } 098 099 public static void main(String[] args) { 100 try { 101 DirectoryStack vd = new DirectoryStack(); 102 vd.addDirectory(new File("/home/bstefanescu/Desktop")); 103 vd.addDirectory(new File("/home/bstefanescu/src")); 104 105 for (File file : vd.listFiles()) { 106 System.out.println("> " + file); 107 } 108 System.out.println("dummy: " + vd.getFile("dummy")); 109 System.out.println("dev: " + vd.getFile("dev")); 110 } catch (IOException e) { 111 log.error(e, e); 112 } 113 } 114 115}