Example usage for java.nio ByteBuffer clear

Introduction

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

Prototype

public final Buffer clear() 

Source Link

Document

Clears this buffer.

Usage

From source file:org.mhisoft.common.util.FileUtils.java

/**
 * @param source/*  w ww . ja  v  a2  s  .c  om*/
 * @param target
 * @throws IOException
 */
public static void copyFile(final File source, final File target) throws IOException {
    FileChannel in = null;
    FileChannel out = null;
    //   long totalFileSize = 0;

    try {
        in = new FileInputStream(source).getChannel();
        out = new FileOutputStream(target).getChannel();
        //totalFileSize = in.size();

        ByteBuffer buffer = ByteBuffer.allocateDirect(BUFFER);
        int readSize = in.read(buffer);
        long totalRead = 0;
        //int progress = 0;

        //long startTime, endTime  ;

        while (readSize != -1) {

            //startTime = System.currentTimeMillis();
            totalRead = totalRead + readSize;

            //progress = (int) (totalRead * 100 / totalFileSize);

            buffer.flip();

            while (buffer.hasRemaining()) {
                out.write(buffer);
                //System.out.printf(".");
                //showPercent(rdProUI, totalSize/size );
            }
            buffer.clear();
            readSize = in.read(buffer);

            //endTime = System.currentTimeMillis();
        }

    } finally {
        close(in);
        close(out);

    }
}

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From source file:org.sglover.nlp.EntityExtracter.java

private String getContent(ReadableByteChannel channel) throws IOException {
    StringBuilder sb = new StringBuilder();
    ByteBuffer bb = ByteBuffer.allocate(2048);
    int c = -1;/*  www  .  j  a va 2 s.co  m*/
    do {
        c = channel.read(bb);
        bb.flip();
        bb.clear();
        sb.append(new String(bb.array(), "UTF-8"));
    } while (c != -1);

    String content = sb.toString();
    return content;
}

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From source file:org.apache.hadoop.io.crypto.aes.NativeOpensslAESCipher.java

/**
 * input and output are direct buffer for speed improvement.
 * /*from   ww w  . j av a  2  s. c  o m*/
 * @param input
 * @param inputLength
 * @param output
 * @return the output length
 * @throws Exception when error happens
 */
@Override
public int doFinal(ByteBuffer input, int inputLength, ByteBuffer output) throws Exception {
    if (!inited) {
        throw new Exception("Cipher not inited, please call init()");
    }
    output.clear();
    output.limit(0);
    int length = doFinal(context, input, inputLength, output);
    if (0 == length) {
        throw new Exception("Decompressed length is 0!!!");
    }
    output.limit(length);
    return length;
}

---

From source file:org.apache.nifi.processors.standard.util.BaseStrictSyslog5424ParserTest.java

@Test
public void testParseWithSender() {
    final String sender = "127.0.0.1";
    final String message = "<14>1 2014-06-20T09:14:07+00:00 loggregator"
            + " d0602076-b14a-4c55-852a-981e7afeed38 DEA MSG-01"
            + " [exampleSDID@32473 iut=\"3\" eventSource=\"Application\" eventID=\"1011\"]"
            + " [exampleSDID@32480 iut=\"4\" eventSource=\"Other Application\" eventID=\"2022\"] Removing instance";

    final byte[] bytes = message.getBytes(CHARSET);
    final ByteBuffer buffer = ByteBuffer.allocate(bytes.length);
    buffer.clear();
    buffer.put(bytes);/*  ww w .  j  av a  2 s .c o  m*/

    final Syslog5424Event event = parser.parseEvent(buffer, sender);
    Assert.assertNotNull(event);
    Assert.assertTrue(event.isValid());
    Assert.assertEquals(sender, event.getSender());
}

---

From source file:org.lispmob.noroot.IPC.java

public void run() {
    int len = 0;/*  w ww  .ja  v  a  2 s .  c o  m*/
    ByteBuffer buf = ByteBuffer.allocate(9000);
    while (!ipc_thread.isInterrupted()) {
        buf.clear();
        try {
            len = ipc_channel.read(buf);
            if (len == 0) {
                continue;
            }
            buf.flip();
            String json_str = EncodingUtils.getString(buf.array(), "utf8");
            JSONObject jObj = new JSONObject(json_str);
            int ipc_type = jObj.getInt("type");
            System.out.println("LISPmob: Received IPC message: " + ipc_type);
            switch (ipc_type) {
            case IPC_LOG_MSG:
                LISPmobVPNService.err_msg_code = jObj.getInt("err_msg_code");
                Thread.sleep(1000);
                if (LISPmobVPNService.err_msg_code != 0) {
                    /* If LISPmob is not the active windows, the error msg code is not clean
                     * and we send a notification of the error */
                    Resources res = vpn_service.getResources();
                    String[] err_msg = res.getStringArray(R.array.ErrMsgArray);
                    String msg = err_msg[LISPmobVPNService.err_msg_code];
                    //notifications.notify_msg( msg);
                }
                break;
            case IPC_PROTECT_SOCKS:
                int socket = jObj.getInt("socket");
                if (socket != -1) {
                    boolean sock_protect = false;
                    int retry = 0;
                    while (!sock_protect && retry < 30) {
                        if (!vpn_service.protect(socket)) {
                            retry++;
                            Thread.sleep(200);
                        } else {
                            sock_protect = true;
                            System.out.println(
                                    "LISPmob: The socket " + socket + " has been protected (VPN Service)");
                        }
                    }
                }
                break;
            default:
                System.out.println("***** Unknown IPC message: " + ipc_type);
                break;
            }

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

---

From source file:MainClass.java

public void run() {

    ByteBuffer sizeb = ByteBuffer.allocate(4);
    try {//from w w w  .  j  a  v  a2s  .  c  o m
        while (sizeb.hasRemaining())
            in.read(sizeb);
        sizeb.flip();
        int howMany = sizeb.getInt();
        sizeb.clear();

        for (int i = 0; i < howMany; i++) {
            while (sizeb.hasRemaining())
                in.read(sizeb);
            sizeb.flip();
            int length = sizeb.getInt();
            sizeb.clear();

            ByteBuffer data = ByteBuffer.allocate(length);
            while (data.hasRemaining())
                in.read(data);

            BigInteger result = new BigInteger(data.array());
            System.out.println(result);
        }
    } catch (IOException ex) {
        System.err.println(ex);
    } finally {
        try {
            in.close();
        } catch (Exception ex) {
            // We tried
        }
    }
}

---

From source file:org.apache.nifi.processors.standard.util.BaseStrictSyslog5424ParserTest.java

@Test
public void testRFC5424WithoutVersion() {
    final String pri = "34";
    final String version = "-";
    final String stamp = "2003-10-11T22:14:15.003Z";
    final String host = "mymachine.example.com";
    final String appName = "su";
    final String procId = "-";
    final String msgId = "ID17";
    final String structuredData = "-";
    final String body = "BOM'su root' failed for lonvick on /dev/pts/8";

    final String message = "<" + pri + ">" + version + " " + stamp + " " + host + " " + appName + " " + procId
            + " " + msgId + " " + "-" + " " + body;

    final byte[] bytes = message.getBytes(CHARSET);
    final ByteBuffer buffer = ByteBuffer.allocate(bytes.length);
    buffer.clear();
    buffer.put(bytes);//  w w  w.j  a  va 2  s  .  co  m

    final Syslog5424Event event = parser.parseEvent(buffer);
    Assert.assertFalse(event.isValid());
}

---

From source file:org.apache.nifi.processors.standard.util.BaseStrictSyslog5424ParserTest.java

@Test
public void testVariety() {
    final List<String> messages = new ArrayList<>();

    // supported examples from RFC 5424
    messages.add("<34>1 2003-10-11T22:14:15.003Z mymachine.example.com su - "
            + "ID47 - BOM'su root' failed for lonvick on /dev/pts/8");
    messages.add("<165>1 2003-08-24T05:14:15.000003-07:00 192.0.2.1 myproc "
            + "8710 - - %% It's time to make the do-nuts.");
    messages.add("<14>1 2014-06-20T09:14:07+00:00 loggregator"
            + " d0602076-b14a-4c55-852a-981e7afeed38 DEA MSG-01"
            + " [exampleSDID@32473 iut=\"3\" eventSource=\"Application\" eventID=\"1011\"]"
            + " [exampleSDID@32480 iut=\"4\" eventSource=\"Other Application\" eventID=\"2022\"] Removing instance");

    for (final String message : messages) {
        final byte[] bytes = message.getBytes(CHARSET);
        final ByteBuffer buffer = ByteBuffer.allocate(bytes.length);
        buffer.clear();
        buffer.put(bytes);//from w w w  .  j a  v  a 2 s  . c o m

        final Syslog5424Event event = parser.parseEvent(buffer);
        Assert.assertTrue(event.isValid());
    }
}

---

From source file:ti.modules.titanium.utils.UtilsModule.java

public String transcodeString(String orig, String inEncoding, String outEncoding) {
    try {/*from   w ww  .j  a va  2s  . c  o m*/

        Charset charsetOut = Charset.forName(outEncoding);
        Charset charsetIn = Charset.forName(inEncoding);

        ByteBuffer bufferIn = ByteBuffer.wrap(orig.getBytes(charsetIn.name()));
        CharBuffer dataIn = charsetIn.decode(bufferIn);
        bufferIn.clear();
        bufferIn = null;

        ByteBuffer bufferOut = charsetOut.encode(dataIn);
        dataIn.clear();
        dataIn = null;
        byte[] dataOut = bufferOut.array();
        bufferOut.clear();
        bufferOut = null;

        return new String(dataOut, charsetOut.name());

    } catch (UnsupportedEncodingException e) {
        Log.e(TAG, "Unsupported encoding: " + e.getMessage(), e);
    }
    return null;
}

---

From source file:org.apache.hadoop.mapred.nativetask.buffer.DirectBufferPool.java

public void returnBuffer(ByteBuffer buffer) throws IOException {
    if (null == buffer || !buffer.isDirect()) {
        throw new IOException("the buffer is null or the buffer returned is not direct buffer");
    }/*from   ww w  .j  a va  2s . co  m*/

    buffer.clear();
    int capacity = buffer.capacity();
    Queue<WeakReference<ByteBuffer>> list = bufferMap.get(capacity);
    if (null == list) {
        list = new ConcurrentLinkedQueue<WeakReference<ByteBuffer>>();
        Queue<WeakReference<ByteBuffer>> prev = bufferMap.putIfAbsent(capacity, list);
        if (prev != null) {
            list = prev;
        }
    }
    list.add(new WeakReference<ByteBuffer>(buffer));
}

---

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