001/* 002 * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bstefanescu 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.webengine.model.impl; 023 024import java.io.File; 025import java.io.FileFilter; 026import java.io.IOException; 027import java.util.ArrayList; 028import java.util.Arrays; 029import java.util.List; 030 031/** 032 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 033 */ 034public class DirectoryStack { 035 036 protected final List<File> dirs; 037 038 public DirectoryStack() { 039 dirs = new ArrayList<>(); 040 } 041 042 public DirectoryStack(List<File> entries) { 043 this(); 044 dirs.addAll(entries); 045 } 046 047 public List<File> getDirectories() { 048 return dirs; 049 } 050 051 public boolean isEmpty() { 052 return dirs.isEmpty(); 053 } 054 055 public void addDirectory(File dir) throws IOException { 056 dirs.add(dir.getCanonicalFile()); 057 } 058 059 /** 060 * Gets the file given its name in this virtual directory. 061 * <p> 062 * The canonical file is returned if any file is found 063 * 064 * @param name the file name to lookup 065 * @return the file in the canonical form 066 */ 067 public File getFile(String name) throws IOException { 068 for (File entry : dirs) { 069 File file = new File(entry, name); 070 if (file.exists()) { 071 return file.getCanonicalFile(); 072 } 073 } 074 return null; 075 } 076 077 public File[] listFiles() { 078 List<File> result = new ArrayList<>(); 079 for (File entry : dirs) { 080 File[] files = entry.listFiles(); 081 result.addAll(Arrays.asList(files)); 082 } 083 return result.toArray(new File[0]); 084 } 085 086 public File[] listFiles(FileFilter filter) { 087 List<File> result = new ArrayList<>(); 088 for (File entry : dirs) { 089 File[] files = entry.listFiles(filter); 090 result.addAll(Arrays.asList(files)); 091 } 092 return result.toArray(new File[0]); 093 } 094 095}