Java ByteBuffer Write write(ByteBuffer bb, int elementWidth, long value)

Description

write

License

Open Source License

Declaration

public static void write(ByteBuffer bb, int elementWidth, long value) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.nio.ByteBuffer;
import java.nio.ByteOrder;

public class Main {
    public static void write(ByteBuffer bb, int elementWidth, long value) {
        if (bb.order() == ByteOrder.BIG_ENDIAN) {
            value = swap(elementWidth, value);
        }//from  ww  w  . j a  v  a  2s. c  o m
        writeBE(bb, elementWidth, value);
    }

    private static long swap(int elementWidth, long value) {
        return Long.reverseBytes(value) >>> (8 * (8 - elementWidth));
    }

    private static void writeBE(ByteBuffer bb, int elementWidth, long value) {
        final int p = bb.position();
        for (int j = 0; j < elementWidth; j++) {
            bb.put(p + j, (byte) value);
            value >>>= 8;
        }
        bb.position(p + elementWidth);
    }
}

Related

1. write(ByteBuffer data, String filename, boolean append)
2. write(final byte[] array, final int offset, final int end, final ByteBuffer outBB)
3. write(GatheringByteChannel out, ByteBuffer[] buffers, int offset, int length)
4. write(MappedByteBuffer buffer, int pos, String asciString)