/*
* 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]);
}
}
}