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:jenkins.plugins.publish_over_cifs.CifsHostConfiguration.java

@SuppressWarnings("PMD.EmptyCatchBlock")
private static String encode(final String raw) {
    if (raw == null)
        return null;
    final StringBuilder encoded = new StringBuilder(raw.length() * ESCAPED_BUILDER_SIZE_MULTIPLIER);
    final CharsetEncoder encoder = Charset.forName("UTF-8").newEncoder();
    final CharBuffer buffer = CharBuffer.allocate(1);
    for (final char c : raw.toCharArray()) {
        if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
            encoded.append(c);//  ww  w .  j a v  a2s .co  m
        } else {
            buffer.put(0, c);
            buffer.rewind();
            try {
                final ByteBuffer bytes = encoder.encode(buffer);
                while (bytes.hasRemaining()) {
                    final byte oneByte = bytes.get();
                    encoded.append('%');
                    encoded.append(toDigit((oneByte >> HI_TO_LOW_NIBBLE_BIT_SHIFT) & LOW_NIBBLE_BIT_MASK));
                    encoded.append(toDigit(oneByte & LOW_NIBBLE_BIT_MASK));
                }
            } catch (final CharacterCodingException cce) {
                throw new BapPublisherException(Messages.exception_encode_cce(cce.getLocalizedMessage()), cce);
            }
        }
    }
    return encoded.toString();
}

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From source file:net.pms.util.AudioUtils.java

private static void parseRealAudioMetaData(ByteBuffer buffer, DLNAMediaAudio audio, short version) {
    buffer.position(buffer.position() + (version == 4 ? 3 : 4)); // skip unknown
    byte b = buffer.get();
    if (b != 0) {
        byte[] title = new byte[Math.min(b & 0xFF, buffer.remaining())];
        buffer.get(title);//from   ww w .  j  av a 2 s . com
        String titleString = new String(title, StandardCharsets.US_ASCII);
        audio.setSongname(titleString);
        audio.setAudioTrackTitleFromMetadata(titleString);
    }
    if (buffer.hasRemaining()) {
        b = buffer.get();
        if (b != 0) {
            byte[] artist = new byte[Math.min(b & 0xFF, buffer.remaining())];
            buffer.get(artist);
            audio.setArtist(new String(artist, StandardCharsets.US_ASCII));
        }
    }
}

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From source file:edu.umass.cs.gigapaxos.paxosutil.PaxosPacketDemultiplexerFast.java

/**
 * @param bytes//from   ww w.j  a  v a2 s  .  c  o  m
 * @param header
 * @return A static utility method to convert bytes to RequestPacket with
 *         header processing.
 */
public static final Object processHeaderUtil(byte[] bytes, NIOHeader header) {
    if (isByteable(bytes)) {
        long t = System.nanoTime();
        if (PaxosPacket.getType(bytes) == PaxosPacketType.REQUEST) {
            // affix header info only for request packets
            byte[] caddress = header.sndr.getAddress().getAddress();
            short cport = (short) header.sndr.getPort();
            byte[] laddress = header.rcvr.getAddress().getAddress();
            short lport = (short) header.rcvr.getPort();
            ByteBuffer bbuf = ByteBuffer.wrap(bytes, 0, 16);
            for (int i = 0; i < 3; i++)
                bbuf.getInt();
            int paxosIDLength = bbuf.get();

            int offset = 13 + paxosIDLength + 8 + 1;
            int expectedPos = offset + 4 + 2 + 4 + 2;
            assert (bytes.length > offset + 12) : bytes.length + " <= " + expectedPos;
            bbuf = ByteBuffer.wrap(bytes, offset, 12);
            boolean noCA = bytes[offset + 4] == 0 && bytes[offset + 5] == 0;
            boolean noLA = bytes[offset + 6 + 4] == 0 && bytes[offset + 6 + 5] == 0;
            try {
                if (noCA)
                    bbuf.put(caddress).putShort(cport);
                if (noLA)
                    bbuf.put(laddress).putShort(lport);

            } catch (Exception e) {
                assert (false) : bytes.length + " ? " + 16 + 4 + paxosIDLength + 8 + 1;
            }
        }
        try {
            PaxosPacket pp = toPaxosPacket(bytes);
            if (PaxosMessenger.INSTRUMENT_SERIALIZATION && Util.oneIn(100)) {
                if (pp.getType() == PaxosPacketType.REQUEST)
                    DelayProfiler.updateDelayNano("<-request", t);
                else if (pp.getType() == PaxosPacketType.BATCHED_ACCEPT_REPLY)
                    DelayProfiler.updateDelayNano("<-acceptreply", t);
            }
            return pp;
        } catch (UnsupportedEncodingException | UnknownHostException e) {
            e.printStackTrace();
        }
        return null;
    }

    if (!JSONPacket.couldBeJSON(bytes))
        return bytes;

    String message;
    long t = System.nanoTime();
    try {
        message = MessageExtractor.decode(bytes);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
        return null;
    }
    net.minidev.json.JSONObject json = MessageExtractor.parseJSONSmart(message);
    assert (json != null) : message;
    net.minidev.json.JSONObject retval = MessageExtractor.stampAddressIntoJSONObject(header.sndr, header.rcvr,
            insertStringifiedSelf(json, message));
    assert (retval != null) : message + " " + header;
    try {
        if (PaxosMessenger.INSTRUMENT_SERIALIZATION && Util.oneIn(100))
            if (PaxosPacket.getPaxosPacketType(retval) == PaxosPacket.PaxosPacketType.REQUEST)
                DelayProfiler.updateDelayNano("requestJSONification", t);
            else if (PaxosPacket.getPaxosPacketType(retval) == PaxosPacket.PaxosPacketType.BATCHED_ACCEPT_REPLY)
                DelayProfiler.updateDelayNano("batchedAcceptReplyJSONification", t);
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return retval;
}

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From source file:net.darkmist.alib.io.BufferUtil.java

public static boolean isAll(ByteBuffer buf, byte b) {
    buf = buf.duplicate();// w ww  . j  a v a 2s . co m

    while (buf.hasRemaining())
        if (buf.get() != b)
            return false;
    return true;
}

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From source file:com.box.restclientv2.httpclientsupport.HttpClientURLEncodedUtils.java

/**
 * Emcode/escape a portion of a URL, to use with the query part ensure {@code plusAsBlank} is true.
 * // ww w . java 2  s .c  om
 * @param content
 *            the portion to decode
 * @param charset
 *            the charset to use
 * @param blankAsPlus
 *            if {@code true}, then convert space to '+' (e.g. for www-url-form-encoded content), otherwise leave as is.
 * @return
 */
private static String urlencode(final String content, final Charset charset, final BitSet safechars,
        final boolean blankAsPlus) {
    if (content == null) {
        return null;
    }
    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();
}

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From source file:com.gistlabs.mechanize.util.apache.URLEncodedUtils.java

/**
 * Emcode/escape a portion of a URL, to use with the query part ensure {@code plusAsBlank} is true.
 * //from  www  .  ja  v a2  s.c o m
 * @param content the portion to decode
 * @param charset the charset to use
 * @param blankAsPlus if {@code true}, then convert space to '+' (e.g. for www-url-form-encoded content), otherwise leave as is.
 * @return
 */
private static String urlencode(final String content, final Charset charset, final BitSet safechars,
        final boolean blankAsPlus) {
    if (content == null)
        return null;
    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();
}

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From source file:com.tongbanjie.tarzan.rpc.protocol.RpcCommand.java

public static RpcCommand decode(final ByteBuffer byteBuffer) {
    ///*w w w .  j  a v a  2s .com*/
    int length = byteBuffer.limit();
    //?? 1byte
    byte protocolType = byteBuffer.get();
    //Header 4type
    int headerLength = byteBuffer.getInt();
    //Header
    byte[] headerData = new byte[headerLength];
    byteBuffer.get(headerData);

    RpcCommand cmd = headerDecode(headerData, getProtocolType(protocolType));
    //body
    int bodyLength = length - 5 - headerLength;
    byte[] bodyData = null;
    if (bodyLength > 0) {
        bodyData = new byte[bodyLength];
        byteBuffer.get(bodyData);
    }
    cmd.body = bodyData;

    return cmd;
}

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

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

    return new InputStream() {
        public int read() {
            if (!copy.hasRemaining()) {
                return -1;
            }//from ww w  . ja  v a2  s  .  c  o m

            return copy.get() & 0xFF;
        }

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

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

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

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From source file:io.Text.java

/**
 * Returns the next code point at the current position in
 * the buffer. The buffer's position will be incremented.
 * Any mark set on this buffer will be changed by this method!
 *///w  w  w .j a  v a 2  s .com
public static int bytesToCodePoint(ByteBuffer bytes) {
    bytes.mark();
    byte b = bytes.get();
    bytes.reset();
    int extraBytesToRead = bytesFromUTF8[(b & 0xFF)];
    if (extraBytesToRead < 0)
        return -1; // trailing byte!
    int ch = 0;

    switch (extraBytesToRead) {
    case 5:
        ch += (bytes.get() & 0xFF);
        ch <<= 6; /* remember, illegal UTF-8 */
    case 4:
        ch += (bytes.get() & 0xFF);
        ch <<= 6; /* remember, illegal UTF-8 */
    case 3:
        ch += (bytes.get() & 0xFF);
        ch <<= 6;
    case 2:
        ch += (bytes.get() & 0xFF);
        ch <<= 6;
    case 1:
        ch += (bytes.get() & 0xFF);
        ch <<= 6;
    case 0:
        ch += (bytes.get() & 0xFF);
    }
    ch -= offsetsFromUTF8[extraBytesToRead];

    return ch;
}

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From source file:org.apache.arrow.vector.util.Text.java

/**
 * Returns the next code point at the current position in the buffer. The buffer's position will be incremented. Any
 * mark set on this buffer will be changed by this method!
 *//*from   w w  w  . j ava 2 s. c  o  m*/
public static int bytesToCodePoint(ByteBuffer bytes) {
    bytes.mark();
    byte b = bytes.get();
    bytes.reset();
    int extraBytesToRead = bytesFromUTF8[(b & 0xFF)];
    if (extraBytesToRead < 0) {
        return -1; // trailing byte!
    }
    int ch = 0;

    switch (extraBytesToRead) {
    case 5:
        ch += (bytes.get() & 0xFF);
        ch <<= 6; /* remember, illegal UTF-8 */
    case 4:
        ch += (bytes.get() & 0xFF);
        ch <<= 6; /* remember, illegal UTF-8 */
    case 3:
        ch += (bytes.get() & 0xFF);
        ch <<= 6;
    case 2:
        ch += (bytes.get() & 0xFF);
        ch <<= 6;
    case 1:
        ch += (bytes.get() & 0xFF);
        ch <<= 6;
    case 0:
        ch += (bytes.get() & 0xFF);
    }
    ch -= offsetsFromUTF8[extraBytesToRead];

    return ch;
}

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