Here you can find the source of copyBytes(DataInput in, DataOutput out, int length, byte[] buf)
| Parameter | Description |
|---|---|
| in | the DataInput to read from. |
| out | the DataOutput to write to. |
| length | the number of bytes to copy. |
| buf | the buffer to use. Must be of length BUF_LEN. |
public static final void copyBytes(DataInput in, DataOutput out, int length, byte[] buf) throws IOException
//package com.java2s; /**//from w w w. j av a 2s .c om * Copyright (C) 2010-2014 Fabric project group, Cornell University * * This file is part of Fabric. * * Fabric 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 2 of the License, or (at your option) any later * version. * * Fabric 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. */ import java.io.DataInput; import java.io.DataOutput; import java.io.IOException; public class Main { private static final byte BUF_LEN_LOG_2 = 7; private static final byte BUF_LEN_MASK = 0x7f; /** * Copies the specified number of bytes from the given DataInput to the given * DataOutput. * * @param in * the DataInput to read from. * @param out * the DataOutput to write to. * @param length * the number of bytes to copy. * @param buf * the buffer to use. Must be of length BUF_LEN. */ public static final void copyBytes(DataInput in, DataOutput out, int length, byte[] buf) throws IOException { int numLoops = length >> BUF_LEN_LOG_2; for (int count = 0; count < numLoops; count++) { in.readFully(buf); out.write(buf); } in.readFully(buf, 0, length & BUF_LEN_MASK); out.write(buf, 0, length & BUF_LEN_MASK); } }