1 /* 2 * Copyright (c) 2009-2010 jMonkeyEngine 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 package com.jme3.asset.plugins; 34 35 import com.jme3.asset.*; 36 import java.io.*; 37 38 /** 39 * <code>FileLocator</code> allows you to specify a folder where to 40 * look for assets. 41 * @author Kirill Vainer 42 */ 43 public class FileLocator implements AssetLocator { 44 45 private File root; 46 setRootPath(String rootPath)47 public void setRootPath(String rootPath) { 48 if (rootPath == null) 49 throw new NullPointerException(); 50 51 try { 52 root = new File(rootPath).getCanonicalFile(); 53 if (!root.isDirectory()){ 54 throw new IllegalArgumentException("Given root path \"" + root + "\" not a directory"); 55 } 56 } catch (IOException ex) { 57 throw new AssetLoadException("Root path is invalid", ex); 58 } 59 } 60 61 private static class AssetInfoFile extends AssetInfo { 62 63 private File file; 64 AssetInfoFile(AssetManager manager, AssetKey key, File file)65 public AssetInfoFile(AssetManager manager, AssetKey key, File file){ 66 super(manager, key); 67 this.file = file; 68 } 69 70 @Override openStream()71 public InputStream openStream() { 72 try{ 73 return new FileInputStream(file); 74 }catch (FileNotFoundException ex){ 75 // NOTE: Can still happen even if file.exists() is true, e.g. 76 // permissions issue and similar 77 throw new AssetLoadException("Failed to open file: " + file, ex); 78 } 79 } 80 } 81 locate(AssetManager manager, AssetKey key)82 public AssetInfo locate(AssetManager manager, AssetKey key) { 83 String name = key.getName(); 84 File file = new File(root, name); 85 if (file.exists() && file.isFile()){ 86 try { 87 // Now, check asset name requirements 88 String canonical = file.getCanonicalPath(); 89 String absolute = file.getAbsolutePath(); 90 if (!canonical.endsWith(absolute)){ 91 throw new AssetNotFoundException("Asset name doesn't match requirements.\n"+ 92 "\"" + canonical + "\" doesn't match \"" + absolute + "\""); 93 } 94 } catch (IOException ex) { 95 throw new AssetLoadException("Failed to get file canonical path " + file, ex); 96 } 97 98 return new AssetInfoFile(manager, key, file); 99 }else{ 100 return null; 101 } 102 } 103 104 } 105