Java ByteBuffer to Hex toHex(ByteBuffer buffer)

Description

to Hex

License

Open Source License

Declaration

public static String toHex(ByteBuffer buffer) 

Method Source Code

//package com.java2s;
import java.nio.ByteBuffer;

public class Main {
    static final String HEX = "0123456789ABCDEF";

    public static String toHex(ByteBuffer buffer) {
        StringBuilder result = new StringBuilder();
        int pos = buffer.position();
        buffer.position(0);/*  w  w w.ja v  a2s.  co m*/

        for (int i = buffer.limit(); --i >= 0;) {
            byte b = buffer.get();
            result.append(HEX.charAt((b >> 4) & 0xF));
            result.append(HEX.charAt(b & 0xF));
            result.append(' ');
        }

        buffer.position(pos);

        return result.toString();
    }

    public static String toHex(byte[] buffer) {
        StringBuilder result = new StringBuilder();

        for (byte b : buffer) {
            result.append(HEX.charAt((b >> 4) & 0xF));
            result.append(HEX.charAt(b & 0xF));
            result.append(' ');
        }

        return result.toString();
    }

    static void append(ByteBuffer buffer, String s) {
        int len = s.length();
        for (int i = 0; i < len; i++)
            buffer.put((byte) s.charAt(i));
        buffer.put((byte) 0);
        align(buffer);
    }

    static void append(ByteBuffer buffer, byte[] data) {
        buffer.putInt(data.length);
        buffer.put(data);
        align(buffer);
    }

    static void append(ByteBuffer buffer, Object o) {
        if (o instanceof Integer) {
            buffer.putInt((Integer) o);
        } else if (o instanceof Float) {
            buffer.putFloat((Float) o);
        } else if (o instanceof Double) {
            buffer.putDouble((Double) o);
        } else if (o instanceof String) {
            append(buffer, (String) o);
        } else if (o instanceof byte[]) {
            append(buffer, (byte[]) o);
        } else if (o instanceof Boolean) {
            // Nothing to do. The value (true or false) is already sent in the
            // type string
        } else if (o == null) {
            // Nothing to do. The type string alreday specifies a null
        } else
            throw new IllegalArgumentException("Unsupported OSC Type:" + o.getClass().getName());
    }

    static void align(ByteBuffer buffer) {
        buffer.position(((buffer.position() + 3) / 4) * 4);
    }
}

Related

1. bytesToHex(ByteBuffer bytes)
2. bytesToHexString(ByteBuffer b)
3. toHex(ByteBuffer bb)
4. toHex(ByteBuffer bb)
5. toHex(ByteBuffer buf)
6. toHex(ByteBuffer data)
7. toHexStr(final ByteBuffer data)
8. toHexStream(ByteBuffer data)
9. toHexString(ByteBuffer bb)