content: /*
   * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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   */
  package javac.internal.jimage.decompressor;
  
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Properties;
  
  /**
   *
   * JLink Decompressors. All decompressors must be registered in the static
   * initializer of this class.
   *
   * @implNote This class needs to maintain JDK 8 source compatibility.
   *
   * It is used internally in the JDK to implement jimage/jrtfs access,
   * but also compiled and delivered as part of the jrtfs.jar to support access
   * to the jimage file provided by the shipped JDK by tools running on JDK 8.
   */
  public final class ResourceDecompressorRepository {
  
      private ResourceDecompressorRepository() {
      }
  
      private static final Map<String, ResourceDecompressorFactory> factories = new HashMap<>();
  
      static {
          registerReaderProvider(new ZipDecompressorFactory());
          registerReaderProvider(new StringSharingDecompressorFactory());
      }
  
      /**
       * Build a new decompressor for the passed name.
       * @param properties Contains plugin configuration.
       * @param name The plugin name to build.
       * @return A decompressor or null if not found
       * @throws IOException
       */
      public static ResourceDecompressor newResourceDecompressor(Properties properties,
              String name) throws IOException {
  
          ResourceDecompressorFactory fact = factories.get(name);
          if (fact != null) {
              return fact.newDecompressor(properties);
          }
          return null;
      }
  
      private static void registerReaderProvider(ResourceDecompressorFactory factory) {
          factories.put(factory.getName(), factory);
      }
  
  
  }
  