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      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 com.jme3.system.JmeSystem;
     37 import java.io.File;
     38 import java.io.IOException;
     39 import java.net.URISyntaxException;
     40 import java.net.URL;
     41 import java.util.logging.Logger;
     42 
     43 /**
     44  * The <code>ClasspathLocator</code> looks up an asset in the classpath.
     45  * @author Kirill Vainer
     46  */
     47 public class ClasspathLocator implements AssetLocator {
     48 
     49     private static final Logger logger = Logger.getLogger(ClasspathLocator.class.getName());
     50     private String root = "";
     51 
     52     public ClasspathLocator(){
     53     }
     54 
     55     public void setRootPath(String rootPath) {
     56         this.root = rootPath;
     57         if (root.equals("/"))
     58             root = "";
     59         else if (root.length() > 1){
     60             if (root.startsWith("/")){
     61                 root = root.substring(1);
     62             }
     63             if (!root.endsWith("/"))
     64                 root += "/";
     65         }
     66     }
     67 
     68     public AssetInfo locate(AssetManager manager, AssetKey key) {
     69         URL url;
     70         String name = key.getName();
     71         if (name.startsWith("/"))
     72             name = name.substring(1);
     73 
     74         name = root + name;
     75 //        if (!name.startsWith(root)){
     76 //            name = root + name;
     77 //        }
     78 
     79         if (JmeSystem.isLowPermissions()){
     80             url = ClasspathLocator.class.getResource("/" + name);
     81         }else{
     82             url = Thread.currentThread().getContextClassLoader().getResource(name);
     83         }
     84         if (url == null)
     85             return null;
     86 
     87         if (url.getProtocol().equals("file")){
     88             try {
     89                 String path = new File(url.toURI()).getCanonicalPath();
     90 
     91                 // convert to / for windows
     92                 if (File.separatorChar == '\\'){
     93                     path = path.replace('\\', '/');
     94                 }
     95 
     96                 // compare path
     97                 if (!path.endsWith(name)){
     98                     throw new AssetNotFoundException("Asset name doesn't match requirements.\n"+
     99                                                      "\"" + path + "\" doesn't match \"" + name + "\"");
    100                 }
    101             } catch (URISyntaxException ex) {
    102                 throw new AssetLoadException("Error converting URL to URI", ex);
    103             } catch (IOException ex){
    104                 throw new AssetLoadException("Failed to get canonical path for " + url, ex);
    105             }
    106         }
    107 
    108         try{
    109             return UrlAssetInfo.create(manager, key, url);
    110         }catch (IOException ex){
    111             // This is different handling than URL locator
    112             // since classpath locating would return null at the getResource()
    113             // call, otherwise there's a more critical error...
    114             throw new AssetLoadException("Failed to read URL " + url, ex);
    115         }
    116     }
    117 }
    118