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();

Source Link

Document

Returns the byte at the current position and increases the position by 1.

Usage

From source file:Main.java

/**
 * Merge long value from two byte buffer. First bytes of long will be extracted from first byte buffer and second from second one.
 * How many bytes will be read from first buffer determines based on <code>buffer.remaining()</code> value
 * /*from  w  w  w.j a  v  a  2  s.c  o  m*/
 * @param buffer
 *          to read first part of value
 * @param buffer1
 *          to read second part of value
 * @return merged value
 */
public static long mergeLongFromBuffers(ByteBuffer buffer, ByteBuffer buffer1) {
    long result = 0;
    int remaining = buffer.remaining();
    for (int i = 0; i < remaining; ++i) {
        result = result | (MASK & buffer.get());
        result = result << SIZE_OF_BYTE_IN_BITS;
    }
    for (int i = 0; i < SIZE_OF_LONG - remaining - 1; ++i) {
        result = result | (MASK & buffer1.get());
        result = result << SIZE_OF_BYTE_IN_BITS;
    }
    result = result | (MASK & buffer1.get());
    return result;
}

From source file:Main.java

private static String urlencode(final String content, final Charset charset, final BitSet safechars,
        final boolean blankAsPlus) {
    if (content == null) {
        return null;
    }/*from  ww  w  .ja v a  2 s. c o m*/
    StringBuilder buf = new StringBuilder();
    ByteBuffer bb = charset.encode(content);
    while (bb.hasRemaining()) {
        int b = bb.get() & 0xff;
        if (safechars.get(b)) {
            buf.append((char) b);
        } else if (blankAsPlus && b == ' ') {
            buf.append('+');
        } else {
            buf.append("%");
            char hex1 = Character.toUpperCase(Character.forDigit((b >> 4) & 0xF, RADIX));
            char hex2 = Character.toUpperCase(Character.forDigit(b & 0xF, RADIX));
            buf.append(hex1);
            buf.append(hex2);
        }
    }
    return buf.toString();
}

From source file:Main.java

public static byte[] getByteArray(final ByteBuffer buff) {
    if (buff == null) {
        return null;
    }//from w w  w .ja v  a  2s .  co  m
    buff.clear();
    final byte[] inds = new byte[buff.limit()];
    for (int x = 0; x < inds.length; x++) {
        inds[x] = buff.get();
    }
    return inds;
}

From source file:com.sm.message.Header.java

public static Header toHeader(byte[] data) {
    ByteBuffer buf = ByteBuffer.wrap(data);
    byte release = buf.get();
    long version = buf.getLong();
    long node = buf.getLong();
    byte[] n = new byte[data.length - FIRST];
    buf.get(n);//from   w  ww. j a  va  2  s .  co m
    try {
        String name = new String(n, "UTF-8");
        return new Header(name, version, release, node);
    } catch (UnsupportedEncodingException ex) {
        throw new RuntimeException(ex.getMessage());
    }

}

From source file:com.stratagis.geoevent.adapter.nmeaplus.NmeaPlusInboundAdapter.java

private static List<byte[]> index(ByteBuffer in) {

    List<byte[]> messages = new ArrayList<byte[]>();
    for (int i = -1; in.hasRemaining();) {
        byte b = in.get();
        if (b == ((byte) '$')) // bom
        {/*from  w  w w.j av a2s  .  c  o m*/
            i = in.position();
            in.mark();
        } else if (b == ((byte) '\r') || b == ((byte) '\n')) // eom
        {
            if (i != -1) {
                byte[] message = new byte[in.position() - 1 - i];
                System.arraycopy(in.array(), i, message, 0, message.length);
                messages.add(message);
            }
            i = -1;
            in.mark();
        } else if (messages.isEmpty() && i == -1)
            in.mark();
    }
    return messages;
}

From source file:com.twitter.distributedlog.DLSN.java

@VisibleForTesting
static DLSN deserialize0(String dlsn) {
    byte[] data = Base64.decodeBase64(dlsn);
    ByteBuffer bb = ByteBuffer.wrap(data);
    byte version = bb.get();
    if (VERSION0 != version || VERSION0_LEN != data.length) {
        throw new IllegalArgumentException("Invalid DLSN " + dlsn);
    }//  w ww  .j a  v a 2 s .c o m
    return new DLSN(bb.getLong(), bb.getLong(), bb.getLong());
}

From source file:com.twitter.distributedlog.DLSN.java

/**
 * Deserialize the DLSN from bytes array.
 *
 * @param data/*from  w  ww.j  a  v  a2 s . c  o m*/
 *          serialized bytes
 * @return dlsn
 */
public static DLSN deserializeBytes(byte[] data) {
    ByteBuffer bb = ByteBuffer.wrap(data);
    byte version = bb.get();
    if (VERSION0 == version) {
        if (VERSION0_LEN != data.length) {
            throw new IllegalArgumentException("Invalid version zero DLSN " + Hex.encodeHexString(data));
        }
    } else if (VERSION1 == version) {
        if (VERSION1_LEN != data.length) {
            throw new IllegalArgumentException("Invalid version one DLSN " + Hex.encodeHexString(data));
        }
    } else {
        throw new IllegalArgumentException(
                "Invalid DLSN : version = " + version + ", " + Hex.encodeHexString(data));
    }
    return new DLSN(bb.getLong(), bb.getLong(), bb.getLong());
}

From source file:Main.java

/**
 * Finds next Nth MPEG bitstream marker 0x000001xx and returns the data that
 * preceeds it as a ByteBuffer slice//from  w  ww  .  ja v  a  2 s . com
 * 
 * Segment byte order is always little endian
 * 
 * @param buf
 * @return
 */
public static final ByteBuffer gotoMarker(ByteBuffer buf, int n, int mmin, int mmax) {
    if (!buf.hasRemaining())
        return null;

    int from = buf.position();
    ByteBuffer result = buf.slice();
    result.order(ByteOrder.BIG_ENDIAN);

    int val = 0xffffffff;
    while (buf.hasRemaining()) {
        val = (val << 8) | (buf.get() & 0xff);
        if (val >= mmin && val <= mmax) {
            if (n == 0) {
                buf.position(buf.position() - 4);
                result.limit(buf.position() - from);
                break;
            }
            --n;
        }
    }
    return result;
}

From source file:com.tera.common.util.ConsolePrinter.java

/**
 * Convert data from given ByteBuffer to hex
 * //from w  w  w .  j  a  va2 s  .com
 * @param data
 * @return hex
 */
public static String toHex(ByteBuffer data) {
    StringBuilder result = new StringBuilder();
    int counter = 0;
    int b;
    while (data.hasRemaining()) {
        if (counter % 16 == 0)
            result.append(String.format("%04X: ", counter));

        b = data.get() & 0xff;
        result.append(String.format("%02X ", b));

        counter++;
        if (counter % 16 == 0) {
            result.append("  ");
            toText(data, result, 16);
            result.append("\n");
        }
    }
    int rest = counter % 16;
    if (rest > 0) {
        for (int i = 0; i < 17 - rest; i++) {
            result.append("   ");
        }
        toText(data, result, rest);
    }
    return result.toString();
}

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

public static int readShortLength(ByteBuffer bb) {
    int length = (bb.get() & 0xFF) << 8;
    return length | (bb.get() & 0xFF);
}