Example usage for java.nio ByteBuffer get

List of usage examples for java.nio ByteBuffer get

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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:com.mcxiaoke.next.http.util.URLUtils.java

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

From source file:au.org.ala.layers.grid.GridCacheBuilder.java

static void nextRowOfFloats(float[] row, String datatype, boolean byteOrderLSB, int ncols, RandomAccessFile raf,
        byte[] b, float noDataValue) throws IOException {
    int size = 4;
    if (datatype.charAt(0) == 'U') {
        size = 1;/*from w w w .j a  va  2s. c  om*/
    } else if (datatype.charAt(0) == 'B') {
        size = 1;
    } else if (datatype.charAt(0) == 'S') {
        size = 2;
    } else if (datatype.charAt(0) == 'I') {
        size = 4;
    } else if (datatype.charAt(0) == 'L') {
        size = 8;
    } else if (datatype.charAt(0) == 'F') {
        size = 4;
    } else if (datatype.charAt(0) == 'D') {
        size = 8;
    }

    raf.read(b, 0, size * ncols);
    ByteBuffer bb = ByteBuffer.wrap(b);
    if (byteOrderLSB) {
        bb.order(ByteOrder.LITTLE_ENDIAN);
    } else {
        bb.order(ByteOrder.BIG_ENDIAN);
    }

    int i;
    int length = ncols;
    if (datatype.charAt(0) == 'U') {
        for (i = 0; i < length; i++) {
            float ret = bb.get();
            if (ret < 0) {
                ret += 256;
            }
            row[i] = ret;
        }
    } else if (datatype.charAt(0) == 'B') {

        for (i = 0; i < length; i++) {
            row[i] = (float) bb.get();
        }
    } else if (datatype.charAt(0) == 'S') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getShort();
        }
    } else if (datatype.charAt(0) == 'I') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getInt();
        }
    } else if (datatype.charAt(0) == 'L') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getLong();
        }
    } else if (datatype.charAt(0) == 'F') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getFloat();
        }
    } else if (datatype.charAt(0) == 'D') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getDouble();
        }
    } else {
        logger.info("UNKNOWN TYPE: " + datatype);
    }

    for (i = 0; i < length; i++) {
        if (row[i] == noDataValue) {
            row[i] = Float.NaN;
        }
    }
}

From source file:de.metalcon.imageServer.protocol.CreateRequestTest.java

/**
 * compare two input streams//from w  ww  . j a va2 s . c o  m
 * 
 * @param stream1
 *            first input stream
 * @param stream2
 *            second input stream
 * @return true - if the two streams does contain the same content<br>
 *         false - otherwise
 * @throws IOException
 *             if IO errors occurred
 */
private static boolean compareInputStreams(final InputStream stream1, final InputStream stream2)
        throws IOException {
    final ReadableByteChannel channel1 = Channels.newChannel(stream1);
    final ReadableByteChannel channel2 = Channels.newChannel(stream2);
    final ByteBuffer buffer1 = ByteBuffer.allocateDirect(4096);
    final ByteBuffer buffer2 = ByteBuffer.allocateDirect(4096);

    try {
        while (true) {

            int n1 = channel1.read(buffer1);
            int n2 = channel2.read(buffer2);

            if ((n1 == -1) || (n2 == -1)) {
                return n1 == n2;
            }

            buffer1.flip();
            buffer2.flip();

            for (int i = 0; i < Math.min(n1, n2); i++) {
                if (buffer1.get() != buffer2.get()) {
                    return false;
                }
            }

            buffer1.compact();
            buffer2.compact();
        }

    } finally {
        if (stream1 != null) {
            stream1.close();
        }
        if (stream2 != null) {
            stream2.close();
        }
    }
}

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

public static InputStream inputStream(ByteBuffer bytes) {
    final ByteBuffer copy = bytes.duplicate();

    return new InputStream() {
        public int read() throws IOException {
            if (!copy.hasRemaining())
                return -1;

            return copy.get() & 0xFF;
        }/*from   w w  w .  j  a  va  2 s .  c o m*/

        @Override
        public int read(byte[] bytes, int off, int len) throws IOException {
            if (!copy.hasRemaining())
                return -1;

            len = Math.min(len, copy.remaining());
            copy.get(bytes, off, len);
            return len;
        }

        @Override
        public int available() throws IOException {
            return copy.remaining();
        }
    };
}

From source file:com.healthmarketscience.jackcess.impl.OleUtil.java

private static String readZeroTermStr(ByteBuffer bb) {
    int off = bb.position();
    while (bb.hasRemaining()) {
        byte b = bb.get();
        if (b == 0) {
            break;
        }//  w  w  w .j  av  a2  s.  c  om
    }
    int len = bb.position() - off;
    return readStr(bb, off, len);
}

From source file:com.healthmarketscience.jackcess.impl.UsageMap.java

/**
 * @param database database that contains this usage map
 * @param buf buffer which contains the usage map row info
 * @return Either an InlineUsageMap or a ReferenceUsageMap, depending on
 *         which type of map is found//from  w  w w.ja v a2  s. c o m
 */
public static UsageMap read(DatabaseImpl database, ByteBuffer buf, boolean assumeOutOfRangeBitsOn)
        throws IOException {
    int umapRowNum = buf.get();
    int umapPageNum = ByteUtil.get3ByteInt(buf);
    return read(database, umapPageNum, umapRowNum, false);
}

From source file:com.offbynull.portmapper.pcp.PcpOption.java

/**
 * Constructs a {@link PcpOption} object by parsing a buffer.
 * @param buffer buffer containing PCP option data
 * @throws NullPointerException if any argument is {@code null}
 * @throws BufferUnderflowException if not enough data is available in {@code buffer}
 */// w ww . j a  va 2s  .c om
public PcpOption(ByteBuffer buffer) {
    Validate.notNull(buffer);

    code = buffer.get() & 0xFF;

    buffer.get(); // skip over reserved

    length = buffer.getShort() & 0xFFFF;

    byte[] dataArr = new byte[length];
    buffer.get(dataArr);

    data = ByteBuffer.wrap(dataArr).asReadOnlyBuffer();

    // skip over padding
    int remainder = length % 4;
    for (int i = 0; i < remainder; i++) {
        buffer.get();
    }
}

From source file:net.jenet.Header.java

public void fromBuffer(ByteBuffer buffer) {
    peerID = buffer.getShort();/*from   w w w  .j a  v a2s . c om*/
    flags = buffer.get();
    commandCount = buffer.get();
    sentTime = buffer.getInt();
    challenge = buffer.getInt();
}

From source file:net.jenet.CommandHeader.java

public void fromBuffer(ByteBuffer buffer) {
    command = buffer.get();
    channelID = buffer.get();/* w w w  .  ja v a  2s  . com*/
    flags = buffer.get();
    reserved = buffer.get();
    commandLength = buffer.getInt();
    reliableSequenceNumber = buffer.getInt();
}

From source file:com.codeabovelab.dm.common.security.token.SignedTokenServiceBackend.java

private byte[] restoreArray(ByteBuffer buffer) {
    int len = ((int) buffer.get() & 0xff);
    byte[] bytes = new byte[len];
    buffer.get(bytes);/*from   ww  w  .  j a  va  2  s .  c  o m*/
    return bytes;
}