Here you can find the source of swapBytes(byte[] dataToSwap, int wordByteLength)
| Parameter | Description |
|---|---|
| dataToSwap | a parameter |
| wordByteLength | a parameter |
public static final byte[] swapBytes(byte[] dataToSwap, int wordByteLength) throws IndexOutOfBoundsException
//package com.java2s; /**/*from w ww.j a v a2s . c o m*/ * stratum-proxy is a proxy supporting the crypto-currency stratum pool mining * protocol. * Copyright (C) 2014 Stratehm (stratehm@hotmail.com) * * 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 multipool-stats-backend. If not, see <http://www.gnu.org/licenses/>. */ public class Main { /** * Return an array which contains the same data as dataToSwap but with byte * reversed. The word length is used to know on which base the swap has to * be done. * * The wordByteLength has to be a multiple of the length of the given * dataToSwap, else an IndexOutOfBoundException is thrown. * * For example, with parameters: dataToSwap = B0 B1 B2 B3 B4 B5 B6 B7 * * wordByteLength=1 return B0 B1 B2 B3 B4 B5 B6 B7 * * wordByteLength=2 return B1 B0 B3 B2 B5 B4 B7 B6 * * wordByteLength=4 return B3 B2 B1 B0 B7 B6 B5 B4 * * wordByteLength=8 return B7 B6 B5 B4 B3 B2 B1 B0 * * @param dataToSwap * @param wordByteLength * @return */ public static final byte[] swapBytes(byte[] dataToSwap, int wordByteLength) throws IndexOutOfBoundsException { byte[] result = null; if (dataToSwap != null) { if (wordByteLength < 1 || dataToSwap.length % wordByteLength > 0) { throw new IndexOutOfBoundsException( "The wordByteLength is not a multiple of input data. wordByteLength=" + wordByteLength + ", inputDataSize=" + dataToSwap.length); } result = new byte[dataToSwap.length]; for (int i = 0; i < dataToSwap.length; i += wordByteLength) { for (int resultOffset = 0, inputOffset = wordByteLength - 1; resultOffset < wordByteLength; resultOffset++, inputOffset--) { result[i + resultOffset] = dataToSwap[i + inputOffset]; } } } return result; } }