Example usage for java.nio ByteBuffer array

Introduction

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

Prototype

public final byte[] array()

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:edu.harvard.iq.dvn.unf.Base64Encoding.java

/**
 *
 * @param digest byte array for encoding in base 64,
 * @param  chngByteOrd boolean indicating if to change byte order
 * @return String the encoded base64 of digest
 *///w  ww. j  a  v a 2 s.  c o m
public static String tobase64(byte[] digest, boolean chngByteOrd) {

    byte[] tobase64 = null;
    ByteOrder local = ByteOrder.nativeOrder();
    String ordbyte = local.toString();
    mLog.finer("Native byte order is: " + ordbyte);
    ByteBuffer btstream = ByteBuffer.wrap(digest);
    btstream.order(ByteOrder.BIG_ENDIAN);
    byte[] revdigest = null;
    if (chngByteOrd) {
        revdigest = changeByteOrder(digest, local);
    }
    if (revdigest != null) {
        btstream.put(revdigest);
    } else {
        btstream.put(digest);
    }

    tobase64 = Base64.encodeBase64(btstream.array());

    return new String(tobase64);

}

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

/**
 * You should almost never use this.  Instead, use the write* methods to avoid copies.
 *//*from  w ww  .java  2s.  c  o  m*/
public static byte[] getArray(ByteBuffer buffer) {
    int length = buffer.remaining();

    if (buffer.hasArray()) {
        int boff = buffer.arrayOffset() + buffer.position();
        return Arrays.copyOfRange(buffer.array(), boff, boff + length);
    }
    // else, DirectByteBuffer.get() is the fastest route
    byte[] bytes = new byte[length];
    buffer.duplicate().get(bytes);

    return bytes;
}

From source file:com.icloud.framework.core.util.FBUtilities.java

public static int byteBufferToInt(ByteBuffer bytes) {
    if (bytes.remaining() < 4) {
        throw new IllegalArgumentException("An integer must be 4 bytes in size.");
    }/*from w  w w .  ja  v a 2 s  .  c o  m*/
    int n = 0;
    for (int i = 0; i < 4; ++i) {
        n <<= 8;
        n |= bytes.array()[bytes.position() + bytes.arrayOffset() + i] & 0xFF;
    }
    return n;
}

From source file:com.easemob.dataexport.utils.JsonUtils.java

public static Object fromByteBuffer(ByteBuffer byteBuffer, Class<?> clazz) {
    if ((byteBuffer == null) || !byteBuffer.hasRemaining()) {
        return null;
    }//from  w  w w.  java  2 s  .  c  om
    if (clazz == null) {
        clazz = Object.class;
    }

    Object obj = null;
    try {
        obj = smileMapper.readValue(byteBuffer.array(), byteBuffer.arrayOffset() + byteBuffer.position(),
                byteBuffer.remaining(), clazz);
    } catch (Exception e) {
        LOG.error("Error parsing SMILE bytes", e);
    }
    return obj;
}

From source file:com.icloud.framework.core.util.FBUtilities.java

public static void writeShortByteArray(ByteBuffer name, DataOutput out) {
    int length = name.remaining();
    assert 0 <= length && length <= MAX_UNSIGNED_SHORT;
    try {//from  w  ww  .  ja  v a2  s .c  o  m
        out.writeByte((length >> 8) & 0xFF);
        out.writeByte(length & 0xFF);
        out.write(name.array(), name.position() + name.arrayOffset(), name.remaining());
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:com.arm.connector.bridge.core.Utils.java

public static String bytesToHexString(ByteBuffer bytes) {
    return Utils.bytesToHexString(bytes.array());
}

From source file:burstcoin.jminer.core.round.Round.java

private static int calcScoopNumber(long blockNumber, byte[] generationSignature) {
    if (blockNumber > 0 && generationSignature != null) {
        ByteBuffer buf = ByteBuffer.allocate(32 + 8);
        buf.put(generationSignature);//from w ww.  ja  va  2 s .  c  o m
        buf.putLong(blockNumber);

        // generate new scoop number
        Shabal256 md = new Shabal256();
        md.update(buf.array());

        BigInteger hashnum = new BigInteger(1, md.digest());
        return hashnum.mod(BigInteger.valueOf(MiningPlot.SCOOPS_PER_PLOT)).intValue();
    }
    return 0;
}

From source file:com.openteach.diamond.network.waverider.network.Packet.java

public static void dump(ByteBuffer buffer) {
    logger.info(//from w  ww  .ja v  a 2s  . c om
            "==========================================================================dump data==========================================================================");
    byte[] bytes = buffer.array();
    StringBuilder sb = new StringBuilder("");
    for (int i = 0; i < bytes.length; i++) {
        sb.append(bytes[i]);
        if (i % 80 == 0 && i > 0) {
            logger.info(sb);
            sb.delete(0, sb.length());
        }
    }
    logger.info(
            "==========================================================================dump data end======================================================================");
}

From source file:de.nx42.maps4cim.map.texture.osm.OsmHash.java

protected static String getQueryHashLocation(Area bounds) throws IOException {

    /*/*from   w  ww  .  ja v a  2  s .c o m*/
     * - base64 encode, every char holds 6 bits (2^6 = 64)
     * - 3 chars per float = 18bit precision = enough for 3 sigificant digits
     *   for numbers <256 (which is the case in WGS84)
     * - 4 values -> 12 chars. 72bit or 8 byte of information
     * - use URL safe encoding, or file name failures are expected!
     */

    // calculate size:  4 values, 8 bits per byte
    int bufSize = (int) Math.ceil(4 * locationPrecision / 8.0);

    ByteBuffer byteBuf = ByteBuffer.allocate(bufSize);
    BitOutput bitOut = BitOutput.newInstance(byteBuf); // direct

    storeCoordinate(bounds.getMinLat(), bitOut);
    storeCoordinate(bounds.getMaxLat(), bitOut);
    storeCoordinate(bounds.getMinLon(), bitOut);
    storeCoordinate(bounds.getMaxLon(), bitOut);

    // get array, return as Base64 (URL safe)
    byte[] ar = byteBuf.array();
    return Base64.encodeBase64URLSafeString(ar);

}

From source file:com.amazonaws.services.dynamodbv2.transactions.Request.java

protected static Request deserialize(String txId, ByteBuffer rawRequest) {
    byte[] requestBytes = rawRequest.array();
    try {/*from w  w w  .  java 2s . c  o  m*/
        return MAPPER.readValue(requestBytes, 0, requestBytes.length, Request.class);
    } catch (JsonParseException e) {
        throw new TransactionAssertionException(txId, "Failed to deserialize request " + rawRequest + " " + e);
    } catch (JsonMappingException e) {
        throw new TransactionAssertionException(txId, "Failed to deserialize request " + rawRequest + " " + e);
    } catch (IOException e) {
        throw new TransactionAssertionException(txId, "Failed to deserialize request " + rawRequest + " " + e);
    }
}