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:eu.stratosphere.pact.runtime.task.util.SerializationCopier.java

/**
 * Resets the array and write a serialized copy to the array.
 * If the array is not sufficiently large, a new array is created.
 * The new size is double of the required size for the current copy.
 * /*from   w  w  w  . ja v  a 2s.  c  o  m*/
 * @param copy
 *        Object from which a serialized copy is created.
 */
public void setCopy(T copy) {

    try {
        copy.write(dos);
        dos.flush();
        baos.flush();
    } catch (IOException e) {
        LOG.error(e);
    }

    if (baos.size() <= serializedCopy.length) {
        // copy
        System.arraycopy(baos.toByteArray(), 0, serializedCopy, 0, baos.size());
    } else {
        // allocate larger array
        serializedCopy = new byte[baos.size() * 2];
        System.arraycopy(baos.toByteArray(), 0, serializedCopy, 0, baos.size());
        // create new input streams
        bais = new ByteArrayInputStream(serializedCopy);
        dis = new DataInputStream(bais);
    }
    baos.reset();
}

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From source file:org.pdfgal.pdfgalweb.utils.impl.ZipUtilsImpl.java

@Override
public boolean isZip(final InputStream inputStream) {

    boolean result = false;

    try {/* www .ja va2  s  .  c  o m*/
        final DataInputStream dataInputStream = new DataInputStream(new BufferedInputStream(inputStream));
        final int test = dataInputStream.readInt();
        dataInputStream.close();
        result = (test == 0x504b0304);
    } catch (final IOException e) {
        result = false;
    }

    return result;
}

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

/**
 * Support for splitting the entries on the file system.
 * Seek the input to start and start looking for the beginning of a new collection.
 * When found, return all entries in the collection through hasNext, next().
 * Will possibly return additional collection of entries, but will stop
 * returning new entries if the position in the input stream is past end.
 *
 * @param start The start index for the split
 * @param end   The end index for the split
 * @param input The input stream containing the data
 * @throws IOException if there is a problem reading from the stream
 *///from  www  . j  a va  2  s.co  m
public FastBufferedMessageChunksReader(final long start, long end, final FastBufferedInputStream input)
        throws IOException {
    super();

    if (start < 0L) {
        throw new IllegalArgumentException("Start position (" + start + ") must not be less than zero");
    }
    if (end != Long.MAX_VALUE && end < 0L) {
        throw new IllegalArgumentException("End position (" + end + ") must not be less than zero");
    }
    if (start > end) {
        throw new IllegalArgumentException(
                "Start position (" + start + ") must not be greater than the end position (" + end + ")");
    }
    if (end != Long.MAX_VALUE && start != end) {
        end += MessageChunksWriter.DELIMITER_LENGTH + 4;
    }
    startOffset = start;
    endOffset = end;
    this.input = input;
    this.in = new DataInputStream(input);
    supportedCodecRegistrationCodes = ChunkCodecHelper.registrationCodes();
    reposition(start, end);
}

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From source file:mitm.common.security.password.PBEncryptionParameters.java

private void fromByteArray(byte[] encoded) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(encoded);

    DataInputStream in = new DataInputStream(bis);

    long version = in.readLong();

    if (version != serialVersionUID) {
        throw new SerializationException("Version expected '" + serialVersionUID + "' but got '" + version);
    }//from  w w  w . j a va  2  s .c  om

    int saltSize = in.readInt();

    this.salt = new byte[saltSize];

    in.readFully(salt);

    this.iterationCount = in.readInt();

    int encryptedSize = in.readInt();

    this.encryptedData = new byte[encryptedSize];

    in.readFully(encryptedData);
}

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From source file:com.bruce.study.demo.studydata.demos60.httpclient.MyHttpClientActivity.java

/**
 * ???/*from w ww .  j  av a  2s.  c  om*/
 */
private void getNetInfo() {
    DataInputStream dataInputStream = null;
    try {
        URL url = new URL(ADDRESS); // ??
        URLConnection urlConnection = url.openConnection(); // http
        // ??
        dataInputStream = new DataInputStream(urlConnection.getInputStream());
        // ??
        //                    DataOutputStream dataOutputStream = new DataOutputStream(urlConnection.getOutputStream())
        // ???
        int temp = 0;
        byteArrayBuffer = new ByteArrayBuffer(1000);
        while ((temp = dataInputStream.read()) != -1) {
            byteArrayBuffer.append(temp);
        }
        // ??
        MyHttpClientActivity.this.sendUIMessageEmpty(0x02);
    } catch (MalformedURLException e) {
        logE(e.toString());
    } catch (IOException e) {
        logE(e.toString());
    } finally {
        try {
            if (dataInputStream != null) {
                dataInputStream.close();
            }
        } catch (IOException e) {
            logE(e.toString());
        }
    }
}

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From source file:ffx.xray.CCP4MapFilter.java

/**
 * {@inheritDoc}//from  ww  w  . j  a  v  a 2  s.c  o m
 */
@Override
public Crystal getCrystal(String filename, CompositeConfiguration properties) {
    int imapdata;
    int sg = -1;
    double cella = -1.0;
    double cellb = -1.0;
    double cellc = -1.0;
    double cellalpha = -1.0;
    double cellbeta = -1.0;
    double cellgamma = -1.0;

    ByteOrder b = ByteOrder.nativeOrder();

    FileInputStream fis;
    DataInputStream dis;

    // first determine byte order of file versus system
    try {
        fis = new FileInputStream(filename);
        dis = new DataInputStream(fis);

        dis.skipBytes(212);
        byte bytes[] = new byte[4];
        dis.read(bytes, 0, 4);
        ByteBuffer bb = ByteBuffer.wrap(bytes);

        imapdata = bb.order(ByteOrder.BIG_ENDIAN).getInt();
        String stampstr = Integer.toHexString(imapdata);
        // System.out.println("stamp: " + stampstr);
        switch (stampstr.charAt(0)) {
        case '1':
        case '3':
            if (b.equals(ByteOrder.LITTLE_ENDIAN)) {
                b = ByteOrder.BIG_ENDIAN;
            }
            break;
        case '4':
            if (b.equals(ByteOrder.BIG_ENDIAN)) {
                b = ByteOrder.LITTLE_ENDIAN;
            }
            break;
        }
        fis.close();
    } catch (Exception e) {
        String message = "Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
        System.exit(-1);
    }

    try {
        fis = new FileInputStream(filename);
        dis = new DataInputStream(fis);

        dis.skipBytes(40);
        byte bytes[] = new byte[80];
        dis.read(bytes, 0, 80);
        ByteBuffer bb = ByteBuffer.wrap(bytes);

        cella = bb.order(b).getFloat();
        cellb = bb.order(b).getFloat();
        cellc = bb.order(b).getFloat();
        cellalpha = bb.order(b).getFloat();
        cellbeta = bb.order(b).getFloat();
        cellgamma = bb.order(b).getFloat();

        for (int i = 0; i < 3; i++) {
            bb.order(b).getInt();
        }
        for (int i = 0; i < 3; i++) {
            bb.order(b).getFloat();
        }

        sg = bb.order(b).getInt();
        fis.close();
    } catch (Exception e) {
        String message = "Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
        System.exit(-1);
    }

    return new Crystal(cella, cellb, cellc, cellalpha, cellbeta, cellgamma, SpaceGroup.spaceGroupNames[sg - 1]);
}

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From source file:com.github.terma.m.server.Repo.java

public Map<String, Short> readMetricCodes() throws IOException {
    Map<String, Short> result = new HashMap<>();
    DataInputStream ois = null;//w  w  w  . ja  v  a2  s .c o m
    try {
        ois = new DataInputStream(new FileInputStream(eventCodesFile));
        //noinspection InfiniteLoopStatement
        while (true) {
            result.put(ois.readUTF(), ois.readShort());
        }
    } catch (EOFException | FileNotFoundException e) {
        // just end
    } finally {
        IOUtils.closeQuietly(ois);
    }
    return result;
}

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From source file:com.igormaznitsa.jhexed.hexmap.HexFieldLayer.java

public HexFieldLayer(final InputStream in) throws IOException {
    final DataInputStream din = in instanceof DataInputStream ? (DataInputStream) in : new DataInputStream(in);
    this.name = din.readUTF();
    this.comments = din.readUTF();

    final int valuesNum = din.readShort() & 0xFFFF;
    for (int i = 0; i < valuesNum; i++) {
        final HexFieldValue value = HexFieldValue.readValue(in);
        value.setIndex(i);//from   w  w  w . j  ava2s  . c o m
        this.values.add(value);
    }

    this.columns = din.readInt();
    this.rows = din.readInt();
    this.visible = din.readBoolean();

    final byte[] packedLayerData = new byte[din.readInt()];
    IOUtils.readFully(din, packedLayerData);
    this.array = Utils.unpackArray(packedLayerData);

    if (this.array.length != (this.columns * this.rows))
        throw new IOException("Wrong field size");
}

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From source file:com.athena.chameleon.engine.core.analyzer.parser.Parser.java

/**
 * <pre>/*from www  .  ja  v a2s  .  c o  m*/
 * ?? ? ?  .
 * </pre>
 * @param file
 * @return
 * @throws IOException 
 */
protected String fileToString(String file) throws IOException {

    // return IOUtils.toString(file.toURI());

    String result = null;

    DataInputStream in = null;
    File f = new File(file);
    byte[] buffer = new byte[(int) f.length()];
    in = new DataInputStream(new FileInputStream(f));
    in.readFully(buffer);
    result = new String(buffer);
    IOUtils.closeQuietly(in);

    return result;
}

---

From source file:ffx.realspace.CCP4MapFilter.java

/**
 * {@inheritDoc}//from  w  w  w  .ja  v  a2 s . co  m
 */
@Override
public Crystal getCrystal(String fileName, CompositeConfiguration properties) {
    int imapData;
    int spaceGroup = -1;
    double cellA = -1.0;
    double cellB = -1.0;
    double cellC = -1.0;
    double cellAlpha = -1.0;
    double cellBeta = -1.0;
    double cellGamma = -1.0;

    ByteOrder byteOrder = ByteOrder.nativeOrder();
    FileInputStream fileInputStream;
    DataInputStream dataInputStream;

    // first determine byte order of file versus system
    try {
        fileInputStream = new FileInputStream(fileName);
        dataInputStream = new DataInputStream(fileInputStream);

        dataInputStream.skipBytes(212);
        byte bytes[] = new byte[4];
        dataInputStream.read(bytes, 0, 4);
        ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);

        imapData = byteBuffer.order(ByteOrder.BIG_ENDIAN).getInt();
        String stampString = Integer.toHexString(imapData);

        switch (stampString.charAt(0)) {
        case '1':
        case '3':
            if (byteOrder.equals(ByteOrder.LITTLE_ENDIAN)) {
                byteOrder = ByteOrder.BIG_ENDIAN;
            }
            break;
        case '4':
            if (byteOrder.equals(ByteOrder.BIG_ENDIAN)) {
                byteOrder = ByteOrder.LITTLE_ENDIAN;
            }
            break;
        }
        fileInputStream.close();
    } catch (Exception e) {
        String message = " Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
    }

    try {
        fileInputStream = new FileInputStream(fileName);
        dataInputStream = new DataInputStream(fileInputStream);

        dataInputStream.skipBytes(40);
        byte bytes[] = new byte[80];
        dataInputStream.read(bytes, 0, 80);
        ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);

        cellA = byteBuffer.order(byteOrder).getFloat();
        cellB = byteBuffer.order(byteOrder).getFloat();
        cellC = byteBuffer.order(byteOrder).getFloat();
        cellAlpha = byteBuffer.order(byteOrder).getFloat();
        cellBeta = byteBuffer.order(byteOrder).getFloat();
        cellGamma = byteBuffer.order(byteOrder).getFloat();

        for (int i = 0; i < 3; i++) {
            byteBuffer.order(byteOrder).getInt();
        }
        for (int i = 0; i < 3; i++) {
            byteBuffer.order(byteOrder).getFloat();
        }

        spaceGroup = byteBuffer.order(byteOrder).getInt();
        fileInputStream.close();
    } catch (Exception e) {
        String message = " Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
    }

    return new Crystal(cellA, cellB, cellC, cellAlpha, cellBeta, cellGamma,
            SpaceGroup.spaceGroupNames[spaceGroup - 1]);
}

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