Example usage for java.nio ByteBuffer get

Introduction

In this page you can find the example usage for java.nio ByteBuffer get.

Prototype

public abstract byte get(int index);

Source Link

Document

Returns the byte at the specified index and does not change the position.

Usage

From source file:de.dfki.kiara.jsonrpc.JsonRpcMessage.java

private static JsonNode readFromBuffer(JsonRpcProtocol protocol, ByteBuffer data) throws IOException {
    byte[] array;
    int arrayOffset;
    int arrayLength;
    int oldPos = data.position();
    if (data.hasArray()) {
        array = data.array();// w w  w .ja va 2s . c  o  m
        arrayOffset = data.arrayOffset();
        arrayLength = data.remaining();
    } else {
        array = new byte[data.remaining()];
        data.get(array);
        arrayOffset = 0;
        arrayLength = array.length;
    }
    data.position(oldPos);

    JsonNode node;
    try (JsonParser parser = protocol.getObjectReader().getFactory().createParser(array, arrayOffset,
            arrayLength)) {
        node = parser.readValueAsTree();
    }
    return node;
}

From source file:com.googlecode.mp4parser.boxes.microsoft.XtraBox.java

private static void dumpByteBuffer(ByteBuffer input)
        throws ArrayIndexOutOfBoundsException, IllegalArgumentException, IOException {
    input = input.slice();//from  www.j a v a 2s.  c o  m
    byte bytes[] = new byte[input.remaining()];
    input.get(bytes);
    HexDump.dump(bytes, 0, System.out, 0);
}

From source file:edu.umass.cs.nio.MessageNIOTransport.java

/**
 * @param bytes//from   ww w . j a v a  2s.c  o m
 * @return Sender InetSocketAddress from bytes
 * @throws UnknownHostException
 */
public static InetSocketAddress getSenderAddress(byte[] bytes) throws UnknownHostException {
    ByteBuffer bbuf = ByteBuffer.wrap(bytes, 0, NIOHeader.BYTES);
    byte[] addressBytes = new byte[4];
    bbuf.get(addressBytes);
    InetAddress address = InetAddress.getByAddress(addressBytes);
    int port = (int) bbuf.getShort();
    if (port < 0)
        port += 2 * (Short.MAX_VALUE + 1);
    return new InetSocketAddress(address, port);
}

From source file:edu.umass.cs.nio.MessageNIOTransport.java

/**
 * @param bytes//  www .  ja va 2  s . c o  m
 * @return Sender InetSocketAddress from bytes
 * @throws UnknownHostException
 */
public static InetSocketAddress getReceiverAddress(byte[] bytes) throws UnknownHostException {
    ByteBuffer bbuf = ByteBuffer.wrap(bytes, 6, NIOHeader.BYTES);
    byte[] addressBytes = new byte[4];
    bbuf.get(addressBytes);
    InetAddress address = InetAddress.getByAddress(addressBytes);
    int port = (int) bbuf.getShort();
    if (port < 0)
        port += 2 * (Short.MAX_VALUE + 1);
    return new InetSocketAddress(address, port);
}

From source file:edu.cmu.cylab.starslinger.transaction.WebEngine.java

public static byte[] parseMessageResponse(byte[] resp) throws BufferUnderflowException {
    ByteBuffer buffer = ByteBuffer.wrap(resp);
    byte[] encfile = null;

    int errCode = buffer.getInt();
    if (errCode != 1)
        return null;

    int fileLen = buffer.getInt();
    encfile = new byte[fileLen];
    try {//from  ww w. j a v  a2s .c  o m
        buffer.get(encfile);
        return encfile;
    } catch (BufferUnderflowException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:io.mycat.util.ByteBufferUtil.java

/**
 * ByteBuffer adaptation of org.apache.commons.lang3.ArrayUtils.lastIndexOf method
 *
 * @param buffer the array to traverse for looking for the object, may be <code>null</code>
 * @param valueToFind the value to find//from   w  w  w  .j av  a2  s . co m
 * @param startIndex the start index (i.e. BB position) to travers backwards from
 * @return the last index (i.e. BB position) of the value within the array
 * [between buffer.position() and buffer.limit()]; <code>-1</code> if not found.
 */
public static int lastIndexOf(ByteBuffer buffer, byte valueToFind, int startIndex) {
    assert buffer != null;

    if (startIndex < buffer.position()) {
        return -1;
    } else if (startIndex >= buffer.limit()) {
        startIndex = buffer.limit() - 1;
    }

    for (int i = startIndex; i >= buffer.position(); i--) {
        if (valueToFind == buffer.get(i)) {
            return i;
        }
    }

    return -1;
}

From source file:net.servicestack.client.Utils.java

public static byte[] toGuidBytes(UUID theUuid) {
    ByteBuffer first8 = ByteBuffer.allocate(8);
    first8.putLong(theUuid.getMostSignificantBits());
    first8.rewind();//from w  w w.  j a  v  a2  s  . c  o  m

    byte[] first4 = new byte[4];
    first8.get(first4);
    reverse(first4);

    byte[] second2 = new byte[2];
    first8.get(second2);
    reverse(second2);

    byte[] third2 = new byte[2];
    first8.get(third2);
    reverse(third2);

    ByteBuffer converted16 = ByteBuffer.allocate(16).put(first4).put(second2).put(third2);

    ByteBuffer last8 = ByteBuffer.allocate(8);
    last8.putLong(theUuid.getLeastSignificantBits());
    last8.rewind();

    converted16.put(last8);

    return converted16.array();
}

From source file:com.glaf.core.util.ByteBufferUtils.java

public static String bytesToHex(ByteBuffer bytes) {
    final int offset = bytes.position();
    final int size = bytes.remaining();
    final char[] c = new char[size * 2];
    for (int i = 0; i < size; i++) {
        final int bint = bytes.get(i + offset);
        c[i * 2] = Hex.byteToChar[(bint & 0xf0) >> 4];
        c[1 + i * 2] = Hex.byteToChar[bint & 0x0f];
    }//from   w  w  w  .  j av  a  2 s . c  o m
    return Hex.wrapCharArray(c);
}

From source file:com.glaf.core.util.ByteBufferUtils.java

public static void write(ByteBuffer buffer, DataOutput out) throws IOException {
    if (buffer.hasArray()) {
        out.write(buffer.array(), buffer.arrayOffset() + buffer.position(), buffer.remaining());
    } else {/*from   w  w  w. ja  va  2s  .c o m*/
        for (int i = buffer.position(); i < buffer.limit(); i++) {
            out.writeByte(buffer.get(i));
        }
    }
}

From source file:com.aerohive.nms.engine.admin.task.licensemgr.license.processor2.PacketUtil.java

public static byte[] join(Header header, byte[] content) {
    ByteBuffer buf = ByteBuffer.allocate(8192);

    byte[] outBytes;
    if (content.length == 0) {
        outBytes = new byte[0];
    } else {/*from  ww  w  .j a  v a2s . co m*/
        if (header.isSecretFlag()) {
            // encrypt data
            outBytes = encryptData(content);
        } else {
            outBytes = new byte[content.length];
            System.arraycopy(content, 0, outBytes, 0, content.length);
        }
    }
    buf.put(header.getType());
    buf.putInt(outBytes.length);
    buf.put(header.getProtocolVersion());
    buf.put(header.isSecretFlag() ? CommConst.Secret_Flag_Yes : CommConst.Secret_Flag_No);
    buf.put(outBytes);

    buf.flip();

    byte[] dst = new byte[buf.limit()];
    buf.get(dst);
    return dst;
}