Example usage for java.io DataInputStream DataInputStream

Introduction

In this page you can find the example usage for java.io DataInputStream DataInputStream.

Prototype

public DataInputStream(InputStream in) 

Source Link

Document

Creates a DataInputStream that uses the specified underlying InputStream.

Usage

From source file:ClassFile.java

/**
 * Read a class from InputStream <i>in</i>.
 *//*from   w  w  w.jav  a 2 s  .com*/
public boolean read(InputStream in) throws IOException {
    DataInputStream di = new DataInputStream(in);
    int count;

    magic = di.readInt();
    if (magic != (int) 0xCAFEBABE) {
        return (false);
    }

    majorVersion = di.readShort();
    minorVersion = di.readShort();
    count = di.readShort();
    constantPool = new ConstantPoolInfo[count];
    if (debug)
        System.out.println("read(): Read header...");
    constantPool[0] = new ConstantPoolInfo();
    for (int i = 1; i < constantPool.length; i++) {
        constantPool[i] = new ConstantPoolInfo();
        if (!constantPool[i].read(di)) {
            return (false);
        }
        // These two types take up "two" spots in the table
        if ((constantPool[i].type == ConstantPoolInfo.LONG)
                || (constantPool[i].type == ConstantPoolInfo.DOUBLE))
            i++;
    }

    /*
     * Update pointers in the constant table. This turns the
     * table into a real datastructure.
     *
     * TODO: Have it verify that the right arguments are present
     */
    for (int i = 1; i < constantPool.length; i++) {
        if (constantPool[i] == null)
            continue;
        if (constantPool[i].index1 > 0)
            constantPool[i].arg1 = constantPool[constantPool[i].index1];
        if (constantPool[i].index2 > 0)
            constantPool[i].arg2 = constantPool[constantPool[i].index2];
    }

    if (dumpConstants) {
        for (int i = 1; i < constantPool.length; i++) {
            System.out.println("C" + i + " - " + constantPool[i]);
        }
    }
    accessFlags = di.readShort();

    thisClass = constantPool[di.readShort()];
    superClass = constantPool[di.readShort()];
    if (debug)
        System.out.println("read(): Read class info...");

    /*
     * Identify all of the interfaces implemented by this class
     */
    count = di.readShort();
    if (count != 0) {
        if (debug)
            System.out.println("Class implements " + count + " interfaces.");
        interfaces = new ConstantPoolInfo[count];
        for (int i = 0; i < count; i++) {
            int iindex = di.readShort();
            if ((iindex < 1) || (iindex > constantPool.length - 1))
                return (false);
            interfaces[i] = constantPool[iindex];
            if (debug)
                System.out.println("I" + i + ": " + interfaces[i]);
        }
    }
    if (debug)
        System.out.println("read(): Read interface info...");

    /*
     * Identify all fields in this class.
     */
    count = di.readShort();
    if (debug)
        System.out.println("This class has " + count + " fields.");
    if (count != 0) {
        fields = new FieldInfo[count];
        for (int i = 0; i < count; i++) {
            fields[i] = new FieldInfo();
            if (!fields[i].read(di, constantPool)) {
                return (false);
            }
            if (debug)
                System.out.println("F" + i + ": " + fields[i].toString(constantPool));
        }
    }
    if (debug)
        System.out.println("read(): Read field info...");

    /*
       * Identify all the methods in this class.
     */
    count = di.readShort();
    if (count != 0) {
        methods = new MethodInfo[count];
        for (int i = 0; i < count; i++) {
            methods[i] = new MethodInfo();
            if (!methods[i].read(di, constantPool)) {
                return (false);
            }
            if (debug)
                System.out.println("M" + i + ": " + methods[i].toString());
        }
    }
    if (debug)
        System.out.println("read(): Read method info...");

    /*
     * Identify all of the attributes in this class
     */
    count = di.readShort();
    if (count != 0) {
        attributes = new AttributeInfo[count];
        for (int i = 0; i < count; i++) {
            attributes[i] = new AttributeInfo();
            if (!attributes[i].read(di, constantPool)) {
                return (false);
            }
        }
    }
    if (debug) {
        System.out.println("read(): Read attribute info...");
        System.out.println("done.");
    }
    isValidClass = true;
    return (true);
}

---

From source file:com.jivesoftware.os.amza.service.replication.http.HttpAvailableRowsTaker.java

@Override
public void availableRowsStream(RingMember localRingMember, TimestampedRingHost localTimestampedRingHost,
        RingMember remoteRingMember, RingHost remoteRingHost, boolean system, long takeSessionId,
        long takeSharedKey, long timeoutMillis, AvailableStream availableStream, PingStream pingStream)
        throws Exception {

    String endpoint = "/amza/rows/available" + "/" + localRingMember.getMember() + "/"
            + localTimestampedRingHost.ringHost.toCanonicalString() + "/" + system + "/"
            + localTimestampedRingHost.timestampId + "/" + takeSessionId + "/" + timeoutMillis;
    String sharedKeyJson = mapper.writeValueAsString(takeSharedKey); // lame
    HttpStreamResponse httpStreamResponse = ringClient.call("",
            new ConnectionDescriptorSelectiveStrategy(
                    new HostPort[] { new HostPort(remoteRingHost.getHost(), remoteRingHost.getPort()) }),
            "availableRowsStream", httpClient -> {
                HttpStreamResponse response = httpClient.streamingPost(endpoint, sharedKeyJson, null);
                if (response.getStatusCode() < 200 || response.getStatusCode() >= 300) {
                    throw new NonSuccessStatusCodeException(response.getStatusCode(),
                            response.getStatusReasonPhrase());
                }//www  .  j  ava 2  s. c  om
                return new ClientResponse<>(response, true);
            });
    try {
        BufferedInputStream bis = new BufferedInputStream(httpStreamResponse.getInputStream(), 8192); // TODO config??
        DataInputStream dis = new DataInputStream(new SnappyInputStream(bis));
        streamingTakesConsumer.consume(dis, availableStream, pingStream);
    } finally {
        httpStreamResponse.close();
    }
}

---

From source file:de.hybris.platform.jobs.RemovedItemPKProcessorTest.java

@Test
public void testAllIterated() {
    final PK one = PK.createFixedUUIDPK(102, 1);
    final PK two = PK.createFixedUUIDPK(102, 2);
    final PK three = PK.createFixedUUIDPK(102, 3);

    final MediaModel mediaPk = new MediaModel();
    final DataInputStream dis = new DataInputStream(buildUpStream(one, two, three));

    Mockito.when(model.getItemPKs()).thenReturn(mediaPk);
    Mockito.when(mediaService.getStreamFromMedia(mediaPk)).thenReturn(dis);

    iterator.init(model);/*  ww w.  ja  v  a  2 s .  co m*/

    Assert.assertTrue("Not all iterations should be skipped ", iterator.hasNext());
    Assert.assertEquals("Should  return first element ", one, iterator.next());
    Assert.assertTrue("Not all iterations should be skipped ", iterator.hasNext());
    Assert.assertEquals("Should  return second element ", two, iterator.next());
    Assert.assertTrue("Not all iterations should be skipped ", iterator.hasNext());
    Assert.assertEquals("Should  return third element ", three, iterator.next());
    Assert.assertFalse("Now all iterations should be skipped ", iterator.hasNext());
}

---

From source file:hudson.console.ConsoleAnnotationOutputStream.java

/**
 * Called after we read the whole line of plain text, which is stored in {@link #buf}.
 * This method performs annotations and send the result to {@link #out}.
 *//*from   www .j  a v a2s  . c o m*/
protected void eol(byte[] in, int sz) throws IOException {
    line.reset();
    final StringBuffer strBuf = line.getStringBuffer();

    int next = ConsoleNote.findPreamble(in, 0, sz);

    List<ConsoleAnnotator<T>> annotators = null;

    {// perform byte[]->char[] while figuring out the char positions of the BLOBs
        int written = 0;
        while (next >= 0) {
            if (next > written) {
                lineOut.write(in, written, next - written);
                lineOut.flush();
                written = next;
            } else {
                assert next == written;
            }

            // character position of this annotation in this line
            final int charPos = strBuf.length();

            int rest = sz - next;
            ByteArrayInputStream b = new ByteArrayInputStream(in, next, rest);

            try {
                final ConsoleNote a = ConsoleNote.readFrom(new DataInputStream(b));
                if (a != null) {
                    if (annotators == null)
                        annotators = new ArrayList<ConsoleAnnotator<T>>();
                    annotators.add(new ConsoleAnnotator<T>() {
                        public ConsoleAnnotator annotate(T context, MarkupText text) {
                            return a.annotate(context, text, charPos);
                        }
                    });
                }
            } catch (IOException e) {
                // if we failed to resurrect an annotation, ignore it.
                LOGGER.log(Level.FINE, "Failed to resurrect annotation", e);
            } catch (ClassNotFoundException e) {
                LOGGER.log(Level.FINE, "Failed to resurrect annotation", e);
            }

            int bytesUsed = rest - b.available(); // bytes consumed by annotations
            written += bytesUsed;

            next = ConsoleNote.findPreamble(in, written, sz - written);
        }
        // finish the remaining bytes->chars conversion
        lineOut.write(in, written, sz - written);

        if (annotators != null) {
            // aggregate newly retrieved ConsoleAnnotators into the current one.
            if (ann != null)
                annotators.add(ann);
            ann = ConsoleAnnotator.combine(annotators);
        }
    }

    lineOut.flush();
    MarkupText mt = new MarkupText(strBuf.toString());
    if (ann != null)
        ann = ann.annotate(context, mt);
    out.write(mt.toString(true)); // this perform escapes
}

---

From source file:jeeves.utils.EMail.java

/** Sends the message to the mail server
  *//*from  www  .  ja  v  a 2 s .  c  om*/

public boolean send() throws IOException {
    Socket socket = new Socket(sMailServer, iPort);
    try {
        in = new BufferedReader(new InputStreamReader(new DataInputStream(socket.getInputStream()),
                Charset.forName(Jeeves.ENCODING)));
        out = new OutputStreamWriter(new DataOutputStream(socket.getOutputStream()), "ISO-8859-1");

        if (lookMailServer())
            if (sendData("2", "HELO " + InetAddress.getLocalHost().getHostName() + "\r\n"))
                if (sendData("2", "MAIL FROM: <" + sFrom + ">\r\n"))
                    if (sendData("2", "RCPT TO: <" + sTo + ">\r\n"))
                        if (sendData("354", "DATA\r\n"))
                            if (sendData("2", buildContent()))
                                if (sendData("2", "QUIT\r\n"))
                                    return true;

        sendData("2", "QUIT\r\n");
    } finally {
        IOUtils.closeQuietly(socket);
    }
    return false;
}

---

From source file:es.logongas.util.seguridad.CodigoVerificacionSeguro.java

public int getKey() {
    try {//from  w w w. jav  a2s .  com
        Base32 base32 = new Base32();
        byte datos[] = base32.decode(valor);
        DataInputStream dataInputStream = new DataInputStream(new ByteArrayInputStream(datos));
        int key = dataInputStream.readInt();

        return key;
    } catch (IOException ex) {
        throw new RuntimeException(ex);
    }
}

---

From source file:com.sforce.cd.apexUnit.client.fileReader.ApexManifestFileReader.java

private String[] readInputStreamAndConstructClassArray(InputStream inStr) throws IOException {
    String[] testClassesAsArray = null;
    ArrayList<String> testClassList = new ArrayList<String>();

    LOG.debug("Input stream: " + inStr);
    DataInputStream dataIS = new DataInputStream(inStr);
    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(dataIS));
    String strLine = null;/* w  ww .j a va 2 s .  c o  m*/
    String newline = System.getProperty("line.separator");

    while ((strLine = bufferedReader.readLine()) != null) {
        if (!newline.equals(strLine) && !strLine.equals("") && strLine.length() > 0) {
            LOG.debug("The line says .... -  " + strLine);
            insertIntoTestClassesArray(strLine, testClassList);
        }
    }
    dataIS.close();

    Object[] apexClassesObjArr = testClassList.toArray();
    testClassesAsArray = (Arrays.copyOf(apexClassesObjArr, apexClassesObjArr.length, String[].class));
    if (LOG.isDebugEnabled()) {
        ApexClassFetcherUtils.logTheFetchedApexClasses(testClassesAsArray);
    }
    return testClassesAsArray;
}

---

From source file:CommPortThreaded.java

/**
 * This version of converse() just starts a Thread in each direction.
 *//*from  w ww. jav  a2  s. c  om*/
protected void converse() throws IOException {

    String resp; // the modem response.

    new DataThread(is, System.out).start();
    new DataThread(new DataInputStream(System.in), os).start();

}

---

From source file:RMSGameScores.java

public int compare(byte[] rec1, byte[] rec2) {

    // Construct DataInputStreams for extracting the scores from
    // the records.
    ByteArrayInputStream bais1 = new ByteArrayInputStream(rec1);
    DataInputStream inputStream1 = new DataInputStream(bais1);
    ByteArrayInputStream bais2 = new ByteArrayInputStream(rec2);
    DataInputStream inputStream2 = new DataInputStream(bais2);
    int score1 = 0;
    int score2 = 0;
    try {//from  w  w  w.  j  a v  a2  s  .  co  m
        // Extract the scores.
        score1 = inputStream1.readInt();
        score2 = inputStream2.readInt();
    } catch (EOFException eofe) {
        System.out.println(eofe);
        eofe.printStackTrace();
    } catch (IOException eofe) {
        System.out.println(eofe);
        eofe.printStackTrace();
    }

    // Sort by score
    if (score1 > score2) {
        return RecordComparator.FOLLOWS;
    } else if (score1 < score2) {
        return RecordComparator.PRECEDES;
    } else {
        return RecordComparator.EQUIVALENT;
    }
}

---

From source file:edu.cornell.med.icb.goby.compression.HybridChunkCodec2.java

@Override
public Message decode(final byte[] bytes) throws IOException {
    final DataInputStream completeChunkData = new DataInputStream(new ByteArrayInputStream(bytes));
    final int compressedSize = completeChunkData.readInt();
    final int storedChecksum = completeChunkData.readInt();

    final byte[] compressedBytes = new byte[compressedSize];
    final int read = completeChunkData.read(compressedBytes, 0, compressedSize);
    assert read == compressedSize : "read size must match recorded size.";
    crc32.reset();//www. ja va 2  s  .c o m

    crc32.update(compressedBytes);
    final int computedChecksum = (int) crc32.getValue();
    if (computedChecksum != storedChecksum) {
        throw new InvalidChecksumException();
    }
    final int bytesLeft = bytes.length - 4 - compressedSize - 4;
    final byte[] leftOver = new byte[bytesLeft];
    // 8 is the number of bytes to encode the length of the compressed chunk, plus
    // the number of bytes to encode the checksum.
    System.arraycopy(bytes, 8 + compressedSize, leftOver, 0, bytesLeft);
    final Message reducedProtoBuff = bzip2Codec.decode(leftOver);
    if (reducedProtoBuff == null) {
        return null;
    }
    return handler.decompressCollection(reducedProtoBuff, compressedBytes);
}

---

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