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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 java.io.File;
     37 import java.io.IOException;
     38 import java.io.InputStream;
     39 import java.util.logging.Logger;
     40 import java.util.zip.ZipEntry;
     41 import java.util.zip.ZipFile;
     42 
     43 /**
     44  * <code>ZipLocator</code> is a locator that looks up resources in a .ZIP file.
     45  * @author Kirill Vainer
     46  */
     47 public class ZipLocator implements AssetLocator {
     48 
     49     private ZipFile zipfile;
     50     private static final Logger logger = Logger.getLogger(ZipLocator.class.getName());
     51 
     52     private class JarAssetInfo extends AssetInfo {
     53 
     54         private final ZipEntry entry;
     55 
     56         public JarAssetInfo(AssetManager manager, AssetKey key, ZipEntry entry){
     57             super(manager, key);
     58             this.entry = entry;
     59         }
     60 
     61         public InputStream openStream(){
     62             try{
     63                 return zipfile.getInputStream(entry);
     64             }catch (IOException ex){
     65                 throw new AssetLoadException("Failed to load zip entry: "+entry, ex);
     66             }
     67         }
     68     }
     69 
     70     public void setRootPath(String rootPath) {
     71         try{
     72             zipfile = new ZipFile(new File(rootPath), ZipFile.OPEN_READ);
     73         }catch (IOException ex){
     74             throw new AssetLoadException("Failed to open zip file: " + rootPath, ex);
     75         }
     76     }
     77 
     78     public AssetInfo locate(AssetManager manager, AssetKey key) {
     79         String name = key.getName();
     80         ZipEntry entry = zipfile.getEntry(name);
     81         if (entry == null)
     82             return null;
     83 
     84         return new JarAssetInfo(manager, key, entry);
     85     }
     86 
     87 }
     88