| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.pig.data.utils; |
| |
| public class BytesHelper { |
| private static final int[] mask = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80}; |
| private static final int[] invMask = {0xFE, 0xFD, 0xFB, 0xF7, 0xEF, 0xDF, 0xBF, 0x7F}; |
| |
| public static boolean getBitByPos(byte byt, int pos) { |
| return (byt & mask[pos]) > 0; |
| } |
| |
| public static byte setBitByPos(byte byt, boolean bool, int pos) { |
| if (bool) { |
| return (byte)((int)byt | mask[pos]); |
| } else { |
| return (byte)((int)byt & invMask[pos]); |
| } |
| } |
| } |
