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:com.sitewhere.hbase.device.HBaseDeviceEvent.java

/**
 * Gets the absolute first possible event key for cases where a start timestamp is not
 * specified.// ww  w . j  a  va2 s . c o  m
 * 
 * @param assnKey
 * @return
 */
protected static byte[] getAbsoluteStartKey(byte[] assnKey) {
    ByteBuffer buffer = ByteBuffer.allocate(assnKey.length + 4);
    buffer.put(assnKey);
    buffer.put((byte) 0x00);
    buffer.put((byte) 0x00);
    buffer.put((byte) 0x00);
    buffer.put((byte) 0x00);
    return buffer.array();
}

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From source file:com.sitewhere.hbase.device.HBaseDeviceEvent.java

/**
 * Gets the absolute first possible event key for cases where a start timestamp is not
 * specified./*  w  w w  . j a v  a2 s . c o m*/
 * 
 * @param assnKey
 * @return
 */
protected static byte[] getAbsoluteEndKey(byte[] assnKey) {
    ByteBuffer buffer = ByteBuffer.allocate(assnKey.length + 4);
    buffer.put(assnKey);
    buffer.put((byte) 0xff);
    buffer.put((byte) 0xff);
    buffer.put((byte) 0xff);
    buffer.put((byte) 0xff);
    return buffer.array();
}

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

/**
 * @return a new copy of the data in @param buffer USUALLY YOU SHOULD USE
 *         ByteBuffer.duplicate() INSTEAD, which creates a new Buffer (so
 *         you can mutate its position without affecting the original)
 *         without copying the underlying array.
 *///w  ww  .  j a v  a  2  s .c  om
public static ByteBuffer clone(ByteBuffer buffer) {
    assert buffer != null;

    if (buffer.remaining() == 0)
        return EMPTY_BYTE_BUFFER;

    ByteBuffer clone = ByteBuffer.allocate(buffer.remaining());

    if (buffer.hasArray()) {
        System.arraycopy(buffer.array(), buffer.arrayOffset() + buffer.position(), clone.array(), 0,
                buffer.remaining());
    } else {
        clone.put(buffer.duplicate());
        clone.flip();
    }

    return clone;
}

---

From source file:gdv.xport.feld.Feld.java

private static String toBezeichnung(final String name) {
    String converted = name.replaceAll("_", " ");
    ByteBuffer outputBuffer = Config.DEFAULT_ENCODING.encode(converted);
    String convertedISO = new String(outputBuffer.array(), Config.DEFAULT_ENCODING);
    return WordUtils.capitalize(convertedISO.toLowerCase());
}

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From source file:com.alibaba.napoli.metamorphosis.client.producer.SimpleMessageProducer.java

/**
 * ??payload</br></br> 01attribute + payload
 * /*from   ww w .  ja va2  s.  co  m*/
 * @param message
 * @return
 */
public static byte[] encodeData(final Message message) {
    final byte[] payload = message.getData();
    final String attribute = message.getAttribute();
    byte[] attrData = null;
    if (attribute != null) {
        attrData = ByteUtils.getBytes(attribute);
    } else {
        return payload;
    }
    // attributenull
    final int attrLen = attrData == null ? 0 : attrData.length;
    final ByteBuffer buffer = ByteBuffer.allocate(4 + attrLen + payload.length);
    if (attribute != null) {
        buffer.putInt(attrLen);
        if (attrData != null) {
            buffer.put(attrData);
        }
    }

    buffer.put(payload);
    return buffer.array();
}

---

From source file:com.sitewhere.hbase.device.HBaseDeviceEvent.java

/**
 * Get row key for a given event type and time.
 * /* w w w  .  ja v a 2s.c  o m*/
 * @param assnToken
 * @param eventType
 * @param time
 * @return
 * @throws SiteWhereException
 */
public static byte[] getRowKey(byte[] assnKey, long time) throws SiteWhereException {
    time = time / 1000;
    long bucket = time - (time % BUCKET_INTERVAL);
    byte[] bucketBytes = Bytes.toBytes(bucket);
    ByteBuffer buffer = ByteBuffer.allocate(assnKey.length + 4);
    buffer.put(assnKey);
    buffer.put((byte) ~bucketBytes[4]);
    buffer.put((byte) ~bucketBytes[5]);
    buffer.put((byte) ~bucketBytes[6]);
    buffer.put((byte) ~bucketBytes[7]);
    return buffer.array();
}

---

From source file:byps.test.TestUtils.java

public static String bufferToString(ByteBuffer buf) {
    try {/*  w  w  w . j a v a2  s . c o m*/
        boolean isString = true;
        byte[] arr = buf.array();
        for (int i = 0; i < buf.remaining(); i++) {
            byte c = arr[i];
            if (c <= 127 || ((c & 0xC0) == 0x80) || ((c & 0xE0) == 0xC0))
                continue;
            isString = false;
            break;
        }
        if (isString) {
            return new String(buf.array(), 0, buf.remaining(), "UTF-8");
        } else {
            StringBuilder sbuf = new StringBuilder();
            sbuf.append("byte[] bytes = new byte[] {");
            for (int i = 0; i < buf.remaining(); i++) {
                if (i != 0)
                    sbuf.append(", ");
                if ((i % 10) == 0)
                    sbuf.append("\r\n");
                sbuf.append("(byte)0x");
                int c = arr[i] & 0xFF;
                String s = Integer.toHexString(c);
                if (s.length() < 2)
                    sbuf.append("0");
                sbuf.append(s);
            }
            sbuf.append("};");
            return sbuf.toString();
        }
    } catch (UnsupportedEncodingException e) {
        throw new IllegalStateException(e);
    }
}

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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();//  ww 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();
}

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From source file:com.orange.oidc.secproxy_service.KryptoUtils.java

static String encryptJWE(byte[] bytes, Key pubRsaKey, byte[] cek) {
    // Log.d("","encryptJWE");
    try {/*  w  w w  .  jav  a2  s .  com*/
        // A.2.1
        // jwe header already computed as static
        // jweProtectedHeader;

        // A.2.2 Content Encryption Key (CEK)
        if (cek == null) {
            cek = generateRandomKey(256);
        }

        // Log.d("","cek: "+bytesToHex(cek));

        // A.2.3 Key Encryption
        String jweEncrypted64 = encryptRsaB64(cek, pubRsaKey);
        // Log.d("","jweEncrypted "+jweEncrypted64 );

        // A.2.4 Initialization Vector
        byte[] iv_key = generateRandomKey(128);

        // Log.d("","jweInitVector: "+bytesToHex(iv_key));
        String jweInitVector64 = encodeB64(iv_key);
        // Log.d("","jweInitVector64 "+jweInitVector64 );

        // A.2.5 Additional Authenticated Data
        byte[] aad = jweProtectedHeader.getBytes();

        // A.2.6. Content Encryption
        Cipher encrypt = Cipher.getInstance("AES/CBC/PKCS5Padding");

        // check cek result byte array
        if (cek == null || cek.length == 0 || (cek.length % 2) != 0)
            return null;
        int keySize = cek.length / 2;
        Log.d("", "Encryption AES: " + keySize * 8);

        byte aes_key[] = new byte[keySize];
        byte hmac_key[] = new byte[keySize];

        System.arraycopy(cek, 0, hmac_key, 0, keySize);
        System.arraycopy(cek, keySize, aes_key, 0, keySize);

        // Log.d("","hmac_key: "+bytesToHex(hmac_key));
        // Log.d("","aes_key: "+bytesToHex(aes_key));

        encrypt.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(aes_key, "AES"), new IvParameterSpec(iv_key));
        byte[] cryptedBytes = encrypt.doFinal(bytes);
        String cryptedBytes64 = encodeB64(cryptedBytes);

        // compute hmac
        long al = aad.length * 8;

        // concatenate aad, iv_key, cryptedBytes and al 
        byte[] hmacData = new byte[aad.length + iv_key.length + cryptedBytes.length + 8];
        int offset = 0;
        System.arraycopy(aad, offset, hmacData, 0, aad.length);
        offset += aad.length;
        System.arraycopy(iv_key, 0, hmacData, offset, iv_key.length);
        offset += iv_key.length;
        System.arraycopy(cryptedBytes, 0, hmacData, offset, cryptedBytes.length);
        offset += cryptedBytes.length;
        ByteBuffer buffer = ByteBuffer.allocate(8);
        buffer.putLong(al);
        System.arraycopy(buffer.array(), 0, hmacData, offset, 8);

        // hmac
        Mac hmac = Mac.getInstance("HmacSHA256", "SC");
        hmac.init(new SecretKeySpec(hmac_key, "HmacSHA256"));
        byte[] hmacValue = hmac.doFinal(hmacData);

        // authentication tag
        byte[] auth_tag = Arrays.copyOf(hmacValue, 16);
        String auth_tag64 = encodeB64(auth_tag);

        // A.2.7. Complete Representation
        String finalString = jweProtectedHeader + "." + jweEncrypted64 + "." + jweInitVector64 + "."
                + cryptedBytes64 + "." + auth_tag64;

        return finalString;

    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}

---

From source file:io.blobkeeper.file.util.FileUtils.java

public static long getCrc(@NotNull File file) {
    CRC32 crc = new CRC32();

    while (true) {
        ByteBuffer buffer = ByteBuffer.allocate(CHUNK_SIZE);
        while (buffer.hasRemaining()) {
            int bytes = 0;
            try {
                bytes = file.getFileChannel().read(buffer);
            } catch (IOException e) {
                log.error("Can't read blob file " + file, e);
                throw new IllegalArgumentException(e);
            }/*from  w w  w. j av  a  2s .  c o m*/
            if (bytes < 0) {
                break;
            }
        }
        buffer.flip();
        if (buffer.remaining() == 0) {
            break;
        } else {
            crc.update(buffer.array());
        }
    }

    return crc.getValue();
}

---

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