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
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
26package jdk.tools.jlink.internal;
27
28import java.io.IOException;
29import java.io.InputStream;
30import java.io.UncheckedIOException;
31import java.nio.file.Files;
32import java.nio.file.Path;
33import java.util.Objects;
34
35/**
36 * A ResourcePoolEntry backed by a given nio Path.
37 */
38public class PathResourcePoolEntry extends AbstractResourcePoolEntry {
39    private final Path file;
40
41    /**
42     * Create a new PathResourcePoolEntry.
43     *
44     * @param module The module name.
45     * @param path The path for the resource content.
46     * @param type The data type.
47     * @param file The data file identifier.
48     */
49    public PathResourcePoolEntry(String module, String path, Type type, Path file) {
50        super(module, path, type);
51        this.file = Objects.requireNonNull(file);
52        if (!Files.isRegularFile(file)) {
53            throw new IllegalArgumentException(file + " not a file");
54        }
55    }
56
57    @Override
58    public final InputStream content() {
59        try {
60            return Files.newInputStream(file);
61        } catch (IOException ex) {
62            throw new UncheckedIOException(ex);
63        }
64    }
65
66    @Override
67    public final long contentLength() {
68        try {
69            return Files.size(file);
70        } catch (IOException ex) {
71            throw new UncheckedIOException(ex);
72        }
73    }
74}
75