src/java.base/share/classes/jdk/internal/jimage/decompressor/ResourceDecompressor.java

/*
 * Copyright (c) 2015, 2016, 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.
 *
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package jdk.internal.jimage.decompressor;

/**
 *
 * JLink Image Decompressor.
 *
 * @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 interface ResourceDecompressor {

    public interface StringsProvider {
        public String getString(int offset);
    }
    /**
     * Decompressor unique name.
     * @return The decompressor name.
     */
    public String getName();

    /**
     * Decompress a resource.
     * @param strings The String provider
     * @param content The resource content
     * @param offset Resource content offset
     * @param originalSize Uncompressed size
     * @return Uncompressed resource
     * @throws Exception
     */
    public byte[] decompress(StringsProvider strings, byte[] content, int offset,
            long originalSize) throws Exception;
}