2 * Sonitus - FileSource.java - Copyright © 2013 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sonitus.data.source;
20 import static com.google.common.base.Preconditions.checkNotNull;
22 import java.io.EOFException;
23 import java.io.FileInputStream;
24 import java.io.IOException;
25 import java.io.InputStream;
26 import java.util.Arrays;
28 import net.pterodactylus.sonitus.data.Metadata;
29 import net.pterodactylus.sonitus.data.Source;
30 import net.pterodactylus.sonitus.io.IdentifyingInputStream;
32 import com.google.common.base.Optional;
35 * A {@link net.pterodactylus.sonitus.data.Source} that is read from the local
38 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
40 public class FileSource implements Source {
42 /** The path of the file. */
43 private final String path;
45 /** The identified metadata of the file. */
46 private final Metadata metadata;
48 /** The input stream. */
49 private InputStream fileInputStream;
52 * Creates a new file source.
55 * The path of the file
56 * @throws java.io.IOException
57 * if the file can not be found, or an I/O error occurs
59 public FileSource(String path) throws IOException {
60 this.path = checkNotNull(path, "path must not be null");
61 fileInputStream = new FileInputStream(path);
63 /* identify file type. */
64 Optional<IdentifyingInputStream> identifyingInputStream = IdentifyingInputStream.create(new FileInputStream(path));
65 if (identifyingInputStream.isPresent()) {
66 metadata = identifyingInputStream.get().metadata();
69 metadata = new Metadata().name(path);
78 public byte[] get(int bufferSize) throws IOException {
79 byte[] buffer = new byte[bufferSize];
80 int read = fileInputStream.read(buffer);
82 throw new EOFException();
84 return Arrays.copyOf(buffer, read);
88 public Metadata metadata() {
97 public String toString() {
98 return String.format("%s (%s)", path, metadata);