import java.util.Collections;
import java.util.List;
+import net.pterodactylus.sonitus.data.AbstractFilter;
import net.pterodactylus.sonitus.data.Controller;
+import net.pterodactylus.sonitus.data.DataPacket;
+import net.pterodactylus.sonitus.data.Filter;
import net.pterodactylus.sonitus.data.Metadata;
-import net.pterodactylus.sonitus.data.Source;
import net.pterodactylus.sonitus.io.IdentifyingInputStream;
import com.google.common.base.Optional;
/**
- * A {@link net.pterodactylus.sonitus.data.Source} that is read from the local
- * file system.
+ * A {@link Filter} that reads a file from the local file system and does not
+ * expect any input.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
-public class FileSource implements Source {
+public class FileSource extends AbstractFilter {
/** The path of the file. */
private final String path;
- /** The identified metadata of the file. */
- private final Metadata metadata;
-
/** The input stream. */
private InputStream fileInputStream;
* if the file can not be found, or an I/O error occurs
*/
public FileSource(String path) throws IOException {
+ super(path);
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()) {
- metadata = identifyingInputStream.get().metadata();
+ metadataUpdated(identifyingInputStream.get().metadata());
} else {
/* fallback. */
- metadata = new Metadata().name(path);
+ metadataUpdated(new Metadata().name(path));
}
}
//
- // CONTROLLED METHODS
+ // FILTER METHODS
//
@Override
- public String name() {
- return path;
- }
-
- @Override
public List<Controller<?>> controllers() {
return Collections.emptyList();
}
- //
- // SOURCE METHODS
- //
-
@Override
- public byte[] get(int bufferSize) throws IOException {
+ public DataPacket get(int bufferSize) throws IOException {
byte[] buffer = new byte[bufferSize];
int read = fileInputStream.read(buffer);
if (read == -1) {
throw new EOFException();
}
- return Arrays.copyOf(buffer, read);
- }
-
- @Override
- public Metadata metadata() {
- return metadata;
+ return new DataPacket(metadata(), Arrays.copyOf(buffer, read));
}
//
@Override
public String toString() {
- return String.format("%s (%s)", path, metadata);
+ return String.format("%s (%s)", path, metadata());
}
}