1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package jdk.internal.jimage.decompressor;
  26 
  27 import java.io.IOException;
  28 import java.util.HashMap;
  29 import java.util.Map;
  30 import java.util.Properties;
  31 
  32 /**
  33  *
  34  * JImage Decompressors. All decompressors must be registered in the static
  35  * initializer of this class.
  36  */
  37 public final class ResourceDecompressorRepository {
  38 
  39     private ResourceDecompressorRepository() {
  40     }
  41 
  42     private static final Map<String, ResourceDecompressorFactory> factories = new HashMap<>();
  43 
  44     static {
  45         registerReaderProvider(new ZipDecompressorFactory());
  46     }
  47 
  48     /**
  49      * Build a new decompressor for the passed name.
  50      * @param properties Contains plugin configuration.
  51      * @param name The plugin name to build.
  52      * @return A decompressor or null if not found
  53      * @throws IOException
  54      */
  55     public static ResourceDecompressor newResourceDecompressor(Properties properties,
  56             String name) throws IOException {
  57 
  58         ResourceDecompressorFactory fact = factories.get(name);
  59         if (fact != null) {
  60             return fact.newDecompressor(properties);
  61         }
  62         return null;
  63     }
  64 
  65     private static void registerReaderProvider(ResourceDecompressorFactory factory) {
  66         factories.put(factory.getName(), factory);
  67     }
  68 
  69 
  70 }