Example usage for java.nio ByteBuffer hasRemaining

Introduction

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

Prototype

public final boolean hasRemaining() 

Source Link

Document

Indicates if there are elements remaining in this buffer, that is if position < limit .

Usage

From source file:io.github.dsheirer.sample.adapter.ChannelShortAdapter.java

@Override
public float[] convert(byte[] samples) {
    float[] processed = new float[samples.length / 4];

    int pointer = 0;

    /* Wrap byte array in a byte buffer so we can process them as shorts */
    ByteBuffer buffer = ByteBuffer.wrap(samples);

    /* Set endian to correct byte ordering */
    buffer.order(mByteOrder);//  w  ww  . ja  v  a 2s  .  c om

    while (buffer.hasRemaining()) {
        if (mMixerChannel == MixerChannel.LEFT) {
            processed[pointer] = mMap.get(buffer.getShort());

            /* Throw away the right channel */
            buffer.getShort();
        } else {
            /* Throw away the left channel */
            buffer.getShort();

            processed[pointer] = mMap.get(buffer.getShort());
        }

        pointer++;
    }

    return processed;
}

---

From source file:org.alfresco.repo.transfer.HttpClientTransmitterImpl.java

private static void channelCopy(final ReadableByteChannel src, final WritableByteChannel dest)
        throws IOException {
    final ByteBuffer buffer = ByteBuffer.allocateDirect(2 * 1024);
    while (src.read(buffer) != -1) {
        // prepare the buffer to be drained
        buffer.flip();/* ww  w. ja va 2s  .c om*/
        // write to the channel, may block
        dest.write(buffer);

        // If partial transfer, shift remainder down
        // If buffer is empty, same as doing clear()
        buffer.compact();
    }

    // EOF will leave buffer in fill state
    buffer.flip();

    // make sure the buffer is fully drained.
    while (buffer.hasRemaining()) {
        dest.write(buffer);
    }
}

---

From source file:com.alibaba.napoli.metamorphosis.client.consumer.storage.LocalOffsetStorage.java

@Override
public void commitOffset(final String group, final Collection<TopicPartitionRegInfo> infoList) {
    if (infoList == null || infoList.isEmpty()) {
        return;//from   www  .j  ava  2  s  .com
    }
    this.groupInfoMap.put(group, (List<TopicPartitionRegInfo>) infoList);
    try {
        final String json = JSONUtils.serializeObject(this.groupInfoMap);
        this.channel.position(0);
        final ByteBuffer buf = ByteBuffer.wrap(json.getBytes());
        while (buf.hasRemaining()) {
            this.channel.write(buf);
        }
        this.channel.truncate(this.channel.position());
    } catch (final Exception e) {
        log.error("commitOffset failed ", e);
    }

}

---

From source file:net.lightbody.bmp.proxy.jetty.http.nio.ByteBufferInputStream.java

public synchronized void write(ByteBuffer buffer) {
    if (buffer.hasRemaining()) {
        _buffers = LazyList.add(_buffers, buffer);
        this.notify();
    } else//w  w w . jav a2 s.co m
        recycle(buffer);
}

---

From source file:com.byteatebit.nbserver.task.TestWriteMessageTask.java

@Test
public void testWriteCompleteMessage() throws IOException {
    SocketChannel socket = mock(SocketChannel.class);
    ByteArrayOutputStream messageStream = new ByteArrayOutputStream();
    String message = "hi\n";
    when(socket.write(any(ByteBuffer.class))).then(new Answer<Integer>() {
        @Override//from  www.  j ava2  s  .  c om
        public Integer answer(InvocationOnMock invocationOnMock) throws Throwable {
            ByteBuffer buffer = (ByteBuffer) invocationOnMock.getArguments()[0];
            while (buffer.hasRemaining())
                messageStream.write(buffer.get());
            return buffer.position();
        }
    });
    INbContext nbContext = mock(INbContext.class);
    SelectionKey selectionKey = mock(SelectionKey.class);
    when(selectionKey.channel()).thenReturn(socket);
    when(selectionKey.isValid()).thenReturn(true);
    when(selectionKey.readyOps()).thenReturn(SelectionKey.OP_WRITE);

    WriteMessageTask writeTask = WriteMessageTask.Builder.builder().withByteBuffer(ByteBuffer.allocate(100))
            .build();
    List<String> callbackInvoked = new ArrayList<>();
    Runnable callback = () -> callbackInvoked.add("");
    Consumer<Exception> exceptionHandler = e -> Assert.fail(e.getMessage());
    writeTask.writeMessage(message.getBytes(StandardCharsets.UTF_8), nbContext, socket, callback,
            exceptionHandler);
    verify(nbContext, times(1)).register(any(SocketChannel.class), eq(SelectionKey.OP_WRITE), any(), any());
    writeTask.write(selectionKey, callback, exceptionHandler);
    verify(selectionKey, times(1)).interestOps(0);

    Assert.assertEquals(message, messageStream.toString(StandardCharsets.UTF_8));
    Assert.assertEquals(1, callbackInvoked.size());
}

---

From source file:com.flexive.core.stream.BinaryUploadProtocol.java

/**
 * {@inheritDoc}//www.j ava2  s. c  o m
 */
@Override
public synchronized boolean receiveStream(ByteBuffer buffer) throws IOException {
    if (!buffer.hasRemaining()) {
        //this can only happen on remote clients
        if (LOG.isDebugEnabled())
            LOG.debug("aborting (empty)");
        return false;
    }
    if (!rcvStarted) {
        rcvStarted = true;
        if (LOG.isDebugEnabled())
            LOG.debug("(internal serverside) receive start");
        try {
            pout = getContentStorage().receiveTransitBinary(division, handle, mimeType, expectedLength,
                    timeToLive);
        } catch (SQLException e) {
            LOG.error("SQL Error trying to receive binary stream: " + e.getMessage(), e);
        } catch (FxNotFoundException e) {
            LOG.error("Failed to lookup content storage for division #" + division + ": "
                    + e.getLocalizedMessage());
        }
    }
    if (LOG.isDebugEnabled() && count + buffer.remaining() > expectedLength) {
        LOG.debug("poss. overflow: pos=" + buffer.position() + " lim=" + buffer.limit() + " cap="
                + buffer.capacity());
        LOG.debug("Curr count: " + count + " count+rem="
                + (count + buffer.remaining() + " delta:" + ((count + buffer.remaining()) - expectedLength)));
    }
    count += buffer.remaining();
    pout.write(buffer.array(), buffer.position(), buffer.remaining());
    buffer.clear();
    if (expectedLength > 0 && count >= expectedLength) {
        if (LOG.isDebugEnabled())
            LOG.debug("aborting");
        return false;
    }
    return true;
}

---

From source file:hudson.Util.java

/**
 * Encode a single path component for use in an HTTP URL.
 * Escapes all non-ASCII, general unsafe (space and "#%<>[\]^`{|}~)
 * and HTTP special characters (/;:?) as specified in RFC1738.
 * (so alphanumeric and !@$&*()-_=+',. are not encoded)
 * Note that slash(/) is encoded, so the given string should be a
 * single path component used in constructing a URL.
 * Method name inspired by PHP's rawurlencode.
 *//*from w  ww.ja  va 2  s .  c o  m*/
public static String rawEncode(String s) {
    boolean escaped = false;
    StringBuilder out = null;
    CharsetEncoder enc = null;
    CharBuffer buf = null;
    char c;
    for (int i = 0, m = s.length(); i < m; i++) {
        c = s.charAt(i);
        if (c > 122 || uriMap[c]) {
            if (!escaped) {
                out = new StringBuilder(i + (m - i) * 3);
                out.append(s.substring(0, i));
                enc = Charset.forName("UTF-8").newEncoder();
                buf = CharBuffer.allocate(1);
                escaped = true;
            }
            // 1 char -> UTF8
            buf.put(0, c);
            buf.rewind();
            try {
                ByteBuffer bytes = enc.encode(buf);
                while (bytes.hasRemaining()) {
                    byte b = bytes.get();
                    out.append('%');
                    out.append(toDigit((b >> 4) & 0xF));
                    out.append(toDigit(b & 0xF));
                }
            } catch (CharacterCodingException ex) {
            }
        } else if (escaped) {
            out.append(c);
        }
    }
    return escaped ? out.toString() : s;
}

---

From source file:com.act.lcms.v2.fullindex.BuilderTest.java

@Test
public void testExtractTriples() throws Exception {
    // Verify all TMzI triples are stored correctly.
    Map<Long, TMzI> deserializedTriples = new HashMap<>();
    assertEquals("All triples should have entries in the DB", 9,
            fakeDB.getFakeDB().get(ColumnFamilies.ID_TO_TRIPLE).size());
    for (Map.Entry<List<Byte>, byte[]> entry : fakeDB.getFakeDB().get(ColumnFamilies.ID_TO_TRIPLE).entrySet()) {
        Long id = ByteBuffer.wrap(fakeDB.byteListToArray(entry.getKey())).getLong();
        TMzI triple = TMzI.readNextFromByteBuffer(ByteBuffer.wrap(entry.getValue()));
        Float expectedTime = Double.valueOf(TIMES[id.intValue() / 3]).floatValue();
        Double expectedMZ = MZS[id.intValue() / 3][id.intValue() % 3];
        Float expectedIntensity = Double.valueOf(INTENSITIES[id.intValue() / 3][id.intValue() % 3])
                .floatValue();/*from w  ww .j  av  a2s . c  o m*/

        assertEquals("Time matches expected", expectedTime, triple.getTime(), FP_TOLERANCE); // No error expected
        assertEquals("M/z matches expected", expectedMZ, triple.getMz(), FP_TOLERANCE);
        assertEquals("Intensity matches expected", expectedIntensity, triple.getIntensity(), FP_TOLERANCE);

        deserializedTriples.put(id, triple);
    }

    for (Map.Entry<List<Byte>, byte[]> entry : fakeDB.getFakeDB().get(ColumnFamilies.WINDOW_ID_TO_TRIPLES)
            .entrySet()) {
        int windowId = ByteBuffer.wrap(fakeDB.byteListToArray(entry.getKey())).getInt();
        MZWindow window = windowIdsToWindows.get(windowId);

        List<Long> tmziIds = new ArrayList<>(entry.getValue().length / Long.BYTES);
        ByteBuffer valBuffer = ByteBuffer.wrap(entry.getValue());
        while (valBuffer.hasRemaining()) {
            tmziIds.add(valBuffer.getLong());
        }

        for (Long tripleId : tmziIds) {
            TMzI triple = deserializedTriples.get(tripleId);
            assertTrue("Triple m/z falls within range of containing window",
                    triple.getMz() >= window.getMin() && triple.getMz() <= window.getMax());
        }
    }

    for (Map.Entry<List<Byte>, byte[]> entry : fakeDB.getFakeDB().get(ColumnFamilies.TIMEPOINT_TO_TRIPLES)
            .entrySet()) {
        float time = ByteBuffer.wrap(fakeDB.byteListToArray(entry.getKey())).getFloat();

        List<Long> tmziIds = new ArrayList<>(entry.getValue().length / Long.BYTES);
        ByteBuffer valBuffer = ByteBuffer.wrap(entry.getValue());
        while (valBuffer.hasRemaining()) {
            tmziIds.add(valBuffer.getLong());
        }

        for (Long tripleId : tmziIds) {
            TMzI triple = deserializedTriples.get(tripleId);
            assertEquals("Triple time matches key time", time, triple.getTime(), FP_TOLERANCE);
        }
    }
}

---

From source file:org.gephi.desktop.importer.DesktopImportControllerUI.java

/**
 * Uncompress a GZIP file./*from  ww  w .  j a v  a2  s  .c  o  m*/
 */
private static File getGzFile(FileObject in, File out, boolean isTar) throws IOException {

    // Stream buffer
    final int BUFF_SIZE = 8192;
    final byte[] buffer = new byte[BUFF_SIZE];

    GZIPInputStream inputStream = null;
    FileOutputStream outStream = null;

    try {
        inputStream = new GZIPInputStream(new FileInputStream(in.getPath()));
        outStream = new FileOutputStream(out);

        if (isTar) {
            // Read Tar header
            int remainingBytes = readTarHeader(inputStream);

            // Read content
            ByteBuffer bb = ByteBuffer.allocateDirect(4 * BUFF_SIZE);
            byte[] tmpCache = new byte[BUFF_SIZE];
            int nRead, nGet;
            while ((nRead = inputStream.read(tmpCache)) != -1) {
                if (nRead == 0) {
                    continue;
                }
                bb.put(tmpCache);
                bb.position(0);
                bb.limit(nRead);
                while (bb.hasRemaining() && remainingBytes > 0) {
                    nGet = Math.min(bb.remaining(), BUFF_SIZE);
                    nGet = Math.min(nGet, remainingBytes);
                    bb.get(buffer, 0, nGet);
                    outStream.write(buffer, 0, nGet);
                    remainingBytes -= nGet;
                }
                bb.clear();
            }
        } else {
            int len;
            while ((len = inputStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, len);
            }
        }
    } catch (IOException ex) {
        Exceptions.printStackTrace(ex);
    } finally {
        if (inputStream != null) {
            inputStream.close();
        }
        if (outStream != null) {
            outStream.close();
        }
    }

    return out;
}

---

From source file:org.gephi.desktop.importer.DesktopImportControllerUI.java

/**
 * Uncompress a Bzip2 file./*from  ww w  . j a  v  a 2  s .c  o m*/
 */
private static File getBzipFile(FileObject in, File out, boolean isTar) throws IOException {

    // Stream buffer
    final int BUFF_SIZE = 8192;
    final byte[] buffer = new byte[BUFF_SIZE];

    BZip2CompressorInputStream inputStream = null;
    FileOutputStream outStream = null;

    try {
        FileInputStream is = new FileInputStream(in.getPath());
        inputStream = new BZip2CompressorInputStream(is);
        outStream = new FileOutputStream(out.getAbsolutePath());

        if (isTar) {
            // Read Tar header
            int remainingBytes = readTarHeader(inputStream);

            // Read content
            ByteBuffer bb = ByteBuffer.allocateDirect(4 * BUFF_SIZE);
            byte[] tmpCache = new byte[BUFF_SIZE];
            int nRead, nGet;
            while ((nRead = inputStream.read(tmpCache)) != -1) {
                if (nRead == 0) {
                    continue;
                }
                bb.put(tmpCache);
                bb.position(0);
                bb.limit(nRead);
                while (bb.hasRemaining() && remainingBytes > 0) {
                    nGet = Math.min(bb.remaining(), BUFF_SIZE);
                    nGet = Math.min(nGet, remainingBytes);
                    bb.get(buffer, 0, nGet);
                    outStream.write(buffer, 0, nGet);
                    remainingBytes -= nGet;
                }
                bb.clear();
            }
        } else {
            int len;
            while ((len = inputStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, len);
            }
        }
    } catch (IOException ex) {
        Exceptions.printStackTrace(ex);
    } finally {
        if (inputStream != null) {
            inputStream.close();
        }
        if (outStream != null) {
            outStream.close();
        }
    }

    return out;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• »