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/*
* ============LICENSE_START=======================================================
* Actn Interface Tools
* ================================================================================
* Copyright (C) 2023 Huawei Canada Limited.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.integration.actninterfacetools.sampleapp.mpiconverter.converter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PncUtils {
private static final Logger log = LoggerFactory.getLogger(PncUtils.class);
//startIdx is 1-indexing;
public static void setBitsZero(byte[] bytes, int startIdx, int length){
int currentByteIdx = (startIdx -1) / 8;
if (currentByteIdx < bytes.length){
byte currByte = bytes[currentByteIdx];
int offset = startIdx ;
while (offset - startIdx < length){
int currBitIdx = (offset - 1) % 8;
currByte = (byte) (currByte & ~(1 << (7 - currBitIdx)));
bytes[currentByteIdx] = currByte;
if (currBitIdx == 7){
currentByteIdx++;
if (currentByteIdx < bytes.length ){
currByte = bytes[currentByteIdx];
}
}
offset++;
}
return;
}
throw new IllegalArgumentException("PncUtils: setBits: Illegal Argument");
}
public static void setBitsOne(byte[] bytes, int startIdx, int length){
int currentByteIdx = (startIdx -1) / 8;
if (currentByteIdx < bytes.length){
byte currByte = bytes[currentByteIdx];
int offset = startIdx ;
while (offset - startIdx < length){
int currBitIdx = (offset - 1) % 8;
currByte = (byte) (currByte | (1 << (7 - currBitIdx)));
bytes[currentByteIdx] = currByte;
if (currBitIdx == 7){
currentByteIdx++;
if (currentByteIdx < bytes.length ){
currByte = bytes[currentByteIdx];
}
}
offset++;
}
return;
}
throw new IllegalArgumentException("PncUtils: setBits: Illegal Argument");
}
public static boolean isBitsOne(byte[] bytes, int startIdx, int length){
int currentByteIdx = (startIdx -1) / 8;
if (currentByteIdx < bytes.length){
byte currByte = bytes[currentByteIdx];
int offset = startIdx ;
while (offset - startIdx < length){
int currBitIdx = (offset - 1) % 8;
if ( ((0x01 << (7 - currBitIdx)) & currByte) == 0){
return false;
};
if (currBitIdx == 7){
bytes[currentByteIdx] = currByte;
currentByteIdx++;
if (currentByteIdx < bytes.length ){
currByte = bytes[currentByteIdx];
}
}
offset++;
}
return true;
}
throw new IllegalArgumentException("PncUtils: setBits: Illegal Argument");
}
}
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