/*

 * Copyright (c) 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package jdk.tools.jlink.internal;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.UncheckedIOException;

import java.util.Objects;

/**

 * A ModuleEntry backed by a given byte[].

 */

class ByteArrayModuleEntry extends AbstractModuleEntry {

    private final byte[] buffer;

    /**

     * Create a new ByteArrayModuleEntry.

     *

     * @param module The module name.

     * @param path The data path identifier.

     * @param type The data type.

     * @param buf  The byte buffer.

     */

    ByteArrayModuleEntry(String module, String path, Type type, byte[] buffer) {

        super(module, path, type);

        this.buffer = Objects.requireNonNull(buffer);

    }

    @Override

    public byte[] getBytes() {

        return buffer.clone();

    }

    @Override

    public InputStream stream() {

        return new ByteArrayInputStream(buffer);

    }

    @Override

    public void write(OutputStream out) {

        try {

            out.write(buffer);

        } catch (IOException ex) {

            throw new UncheckedIOException(ex);

        }

    }

    @Override

    public long getLength() {

        return buffer.length;

    }

}