From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Fri, 15 Mar 2013 05:58:48 +0000 (+0100)
Subject: Add file source.
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=b74bb6374b5b3f4d0f30fefe8771e9c48ceead13;hp=d33602f1921d7c12833cdfd144f7207de0fcc67b;p=sonitus.git

Add file source.
---

diff --git a/src/main/java/net/pterodactylus/sonitus/data/source/FileSource.java b/src/main/java/net/pterodactylus/sonitus/data/source/FileSource.java
new file mode 100644
index 0000000..cc61ce0
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sonitus/data/source/FileSource.java
@@ -0,0 +1,104 @@
+/*
+ * Sonitus - FileSource.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sonitus.data.source;
+
+import static com.google.common.base.Preconditions.*;
+import static net.pterodactylus.sonitus.data.Format.UNKNOWN_CHANNELS;
+import static net.pterodactylus.sonitus.data.Format.UNKNOWN_ENCODING;
+import static net.pterodactylus.sonitus.data.Format.UNKNOWN_FREQUENCY;
+
+import java.io.EOFException;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
+
+import net.pterodactylus.sonitus.data.Format;
+import net.pterodactylus.sonitus.data.Source;
+import net.pterodactylus.sonitus.io.IdentifyingInputStream;
+
+import com.google.common.base.Optional;
+import com.google.common.io.ByteStreams;
+
+/**
+ * A {@link Source} that is read from the local file system.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class FileSource implements Source {
+
+	/** The path of the file. */
+	private final String path;
+
+	/** The identified format of the file. */
+	private final Format format;
+
+	/** The input stream. */
+	private InputStream fileInputStream;
+
+	/**
+	 * Creates a new file source.
+	 *
+	 * @param path
+	 * 		The path of the file
+	 * @throws IOException
+	 * 		if the file can not be found, or an I/O error occurs
+	 */
+	public FileSource(String path) throws IOException {
+		this.path = checkNotNull(path, "path must not be null");
+		fileInputStream = new FileInputStream(path);
+
+		/* identify file type. */
+		Optional<IdentifyingInputStream> identifyingInputStream = IdentifyingInputStream.create(new FileInputStream(path));
+		if (identifyingInputStream.isPresent()) {
+			format = identifyingInputStream.get().format();
+		} else {
+			/* fallback. */
+			format = new Format(UNKNOWN_CHANNELS, UNKNOWN_FREQUENCY, UNKNOWN_ENCODING);
+		}
+	}
+
+	//
+	// SOURCE METHODS
+	//
+
+	@Override
+	public Format format() {
+		return format;
+	}
+
+	@Override
+	public byte[] get(int bufferSize) throws IOException {
+		byte[] buffer = new byte[bufferSize];
+		int read = ByteStreams.read(fileInputStream, buffer, 0, bufferSize);
+		if (read == 0) {
+			throw new EOFException();
+		}
+		return Arrays.copyOf(buffer, read);
+	}
+
+	//
+	// OBJECT METHODS
+	//
+
+	@Override
+	public String toString() {
+		return String.format("%s (%s)", path, format);
+	}
+
+}