| package backtype.storm.utils; |
| |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| |
| public class BufferFileInputStream { |
| byte[] buffer; |
| FileInputStream stream; |
| |
| public BufferFileInputStream(String file, int bufferSize) throws FileNotFoundException { |
| stream = new FileInputStream(file); |
| buffer = new byte[bufferSize]; |
| } |
| |
| public BufferFileInputStream(String file) throws FileNotFoundException { |
| this(file, 15*1024); |
| } |
| |
| public byte[] read() throws IOException { |
| int length = stream.read(buffer); |
| if(length==-1) { |
| close(); |
| return new byte[0]; |
| } else if(length==buffer.length) { |
| return buffer; |
| } else { |
| return Arrays.copyOf(buffer, length); |
| } |
| } |
| |
| public void close() throws IOException { |
| stream.close(); |
| } |
| } |