1 /*
2  * Copyright (c) 2016, 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
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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.
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24  */
25 
26 package jdk.tools.jlink.internal;
27 
28 import java.io.ByteArrayInputStream;
29 import java.io.IOException;
30 import java.io.InputStream;
31 import java.io.OutputStream;
32 import java.io.UncheckedIOException;
33 import java.util.Objects;
34 
35 /**
36  * A ResourcePoolEntry backed by a given byte[].
37  */
38 class ByteArrayResourcePoolEntry extends AbstractResourcePoolEntry {
39     private final byte[] buffer;
40 
41     /**
42      * Create a new ByteArrayResourcePoolEntry.
43      *
44      * @param module The module name.
45      * @param path The data path identifier.
46      * @param type The data type.
47      * @param buf  The byte buffer.
48      */
ByteArrayResourcePoolEntry(String module, String path, Type type, byte[] buffer)49     ByteArrayResourcePoolEntry(String module, String path, Type type, byte[] buffer) {
50         super(module, path, type);
51         this.buffer = Objects.requireNonNull(buffer);
52     }
53 
54     @Override
contentBytes()55     public byte[] contentBytes() {
56         return buffer.clone();
57     }
58 
59     @Override
content()60     public InputStream content() {
61         return new ByteArrayInputStream(buffer);
62     }
63 
64     @Override
write(OutputStream out)65     public void write(OutputStream out) {
66         try {
67             out.write(buffer);
68         } catch (IOException ex) {
69             throw new UncheckedIOException(ex);
70         }
71     }
72 
73     @Override
contentLength()74     public long contentLength() {
75         return buffer.length;
76     }
77 }
78