1 /*
2 * Copyright (c) 2012-2022, jcabi.com
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met: 1) Redistributions of source code must retain the above
8 * copyright notice, this list of conditions and the following
9 * disclaimer. 2) Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution. 3) Neither the name of the jcabi.com nor
13 * the names of its contributors may be used to endorse or promote
14 * products derived from this software without specific prior written
15 * permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
19 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 package com.jcabi.manifests;
31
32 import java.io.File;
33 import java.io.IOException;
34 import java.io.InputStream;
35 import java.util.ArrayList;
36 import java.util.Collection;
37 import java.util.Collections;
38
39 /**
40 * Manifests in files.
41 *
42 * Append attributes from {@code MANIFEST.MF} file:
43 *
44 * <pre> Manifests.append(new FilesMfs(new File("MANIFEST.MF")));</pre>
45 *
46 * <p>The class is immutable and thread-safe.
47 *
48 * @since 1.1
49 */
50 public final class FilesMfs implements Mfs {
51
52 /**
53 * Files.
54 */
55 private final transient Collection<File> files;
56
57 /**
58 * Ctor.
59 * @param file File
60 */
61 public FilesMfs(final File file) {
62 this(Collections.singleton(file));
63 }
64
65 /**
66 * Ctor.
67 * @param list Files
68 */
69 public FilesMfs(final Collection<File> list) {
70 this.files = Collections.unmodifiableCollection(list);
71 }
72
73 @Override
74 public Collection<InputStream> fetch() throws IOException {
75 final Collection<InputStream> streams = new ArrayList<>(1);
76 for (final File file : this.files) {
77 streams.add(file.toURI().toURL().openStream());
78 }
79 return streams;
80 }
81
82 }