Example usage for java.io DataInputStream available

Introduction

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

Prototype

public int available() throws IOException

Source Link

Document

Returns an estimate of the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream.

Usage

From source file:ubic.gemma.analysis.preprocess.batcheffects.AffyScanDateExtractor.java

private String readGCOSString(DataInputStream str) throws IOException {
    int fieldLength = readIntLittleEndian(str);
    StringBuilder buf = new StringBuilder();
    for (int i = 0; i < fieldLength; i++) {
        if (str.available() == 0)
            throw new IOException("Reached end of file without string end");
        buf.append(new String(new byte[] { str.readByte() }, "US-ASCII"));
    }//from  w  w w  .  j  a v  a  2 s  . c o m
    String field = buf.toString();
    return field;
}

From source file:com.atlassian.extras.decoder.v2.Version2LicenseDecoder.java

private byte[] checkAndGetLicenseText(String licenseContent) {
    try {//from   w  ww.j  a  v  a2  s  . c om
        byte[] decodedBytes = Base64.decodeBase64(licenseContent.getBytes());
        ByteArrayInputStream in = new ByteArrayInputStream(decodedBytes);
        DataInputStream dIn = new DataInputStream(in);
        int textLength = dIn.readInt();
        byte[] licenseText = new byte[textLength];
        dIn.read(licenseText);
        byte[] hash = new byte[dIn.available()];
        dIn.read(hash);
        /*try
        {
        Signature signature = Signature.getInstance("SHA1withDSA");
        signature.initVerify(PUBLIC_KEY);
        signature.update(licenseText);
        if (!signature.verify(hash)) {
            throw new LicenseException("Failed to verify the license.");
        }
        }
        catch (InvalidKeyException e)
        {
        throw new LicenseException(e);
        }
        catch (SignatureException e)
        {
        throw new LicenseException(e);
        }
        catch (NoSuchAlgorithmException e)
        {
        throw new LicenseException(e);
        }*/
        return licenseText;
    } catch (IOException e) {
        throw new LicenseException(e);
    }
}

From source file:BA.Server.FileUpload.java

/** 
 * Handles the HTTP <code>POST</code> method.
 * @param request servlet request/*from  ww  w. j  ava2  s. co  m*/
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
@SuppressWarnings("unchecked")
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

    PrintWriter outp = resp.getWriter();

    PrintWriter writer = null;

    try {
        writer = resp.getWriter();
    } catch (IOException ex) {
        log(FileUpload.class.getName() + "has thrown an exception: " + ex.getMessage());
    }

    StringBuffer buff = new StringBuffer();

    File file1 = (File) req.getAttribute("file");

    if (file1 == null || !file1.exists()) {
        System.out.println("File does not exist");
    } else if (file1.isDirectory()) {
        System.out.println("File is a directory");
    }

    else {
        File outputFile = new File("/tmp/" + req.getParameter("file"));
        file1.renameTo(outputFile);

        FileInputStream f = new FileInputStream(outputFile);

        // Here BufferedInputStream is added for fast reading.
        BufferedInputStream bis = new BufferedInputStream(f);
        DataInputStream dis = new DataInputStream(bis);
        int i = 0;
        String result = "";

        writer.write("<html>");
        writer.write("<head><script type='text/javascript'>");
        while (dis.available() != 0) {
            String current = dis.readLine();

            if (((String) req.getParameter("uploadType")).equals("equations")) {
                if (FormulaTester.testInput(current) == -1) {
                    writer.write("window.opener.addTabExt(\"" + current + "\" , \"" + req.getParameter("file")
                            + "\");");
                }
            } else {
                writer.write("window.opener.addMacroExt(\"" + current + "\");");
            }
            i++;

        }

        writer.write("this.close();</script></head>");
        writer.write("</script></head>");
        writer.write("<body>");
        writer.write("</body>");
        writer.write("</html>");

        writer.flush();
        writer.close();

        dis.close();
        bis.close();
        f.close();
        outputFile.delete();

    }
}

From source file:org.apache.cassandra.db.SuperColumn.java

private void fillSuperColumn(IColumn superColumn, DataInputStream dis) throws IOException {
    assert dis.available() != 0;

    /* read the number of columns */
    int size = dis.readInt();
    /* read the size of all columns */
    dis.readInt();/*from  ww  w.j  a  v a  2  s .  co m*/
    for (int i = 0; i < size; ++i) {
        IColumn subColumn = Column.serializer().deserialize(dis);
        superColumn.addColumn(subColumn.name(), subColumn);
    }
}

From source file:Version2LicenseDecoder.java

private byte[] checkAndGetLicenseText(String licenseContent) {
    try {/*ww  w  .ja v a2  s.  c om*/
        byte[] e = Base64.decodeBase64(licenseContent.getBytes());
        ByteArrayInputStream in = new ByteArrayInputStream(e);
        DataInputStream dIn = new DataInputStream(in);
        int textLength = dIn.readInt();
        byte[] licenseText = new byte[textLength];
        dIn.read(licenseText);
        byte[] hash = new byte[dIn.available()];
        dIn.read(hash);

        try {
            Signature e1 = Signature.getInstance("SHA1withDSA");
            e1.initVerify(PUBLIC_KEY);
            e1.update(licenseText);
            if (!e1.verify(hash)) {
                throw new LicenseException("Failed to verify the license.");
            } else {
                return licenseText;
            }
        } catch (InvalidKeyException var9) {
            throw new LicenseException(var9);
        } catch (SignatureException var10) {
            throw new LicenseException(var10);
        } catch (NoSuchAlgorithmException var11) {
            throw new LicenseException(var11);
        }
    } catch (IOException var12) {
        throw new LicenseException(var12);
    }
}

From source file:org.apache.cassandra.db.SuperColumn.java

public IColumn deserialize(DataInputStream dis, IFilter filter) throws IOException {
    if (dis.available() == 0)
        return null;

    IColumn superColumn = defreezeSuperColumn(dis);
    superColumn = filter.filter(superColumn, dis);
    if (superColumn != null) {
        fillSuperColumn(superColumn, dis);
        return superColumn;
    } else {//from   w  w w  . ja  v  a  2s.com
        /* read the number of columns stored */
        dis.readInt();
        /* read the size of all columns to skip */
        int size = dis.readInt();
        dis.skip(size);
        return null;
    }
}

From source file:com.facebook.infrastructure.db.SuperColumn.java

private void fillSuperColumn(IColumn superColumn, DataInputStream dis) throws IOException {
    if (dis.available() == 0)
        return;//  ww  w .  ja v  a  2s .co m

    /* read the number of columns */
    int size = dis.readInt();
    /* read the size of all columns */
    dis.readInt();
    for (int i = 0; i < size; ++i) {
        IColumn subColumn = Column.serializer().deserialize(dis);
        superColumn.addColumn(subColumn.name(), subColumn);
    }
}

From source file:org.veronicadb.core.memorygraph.storage.SimpleLocalFileStorageSink.java

protected List<VVertex> readVertices(VSubGraph graph, DataInputStream stream) throws IOException {
    List<VVertex> vertices = new ArrayList<VVertex>();
    while (stream.available() > 0) {
        long id = readElementId(stream);
        String label = readElementLabel(stream);
        List<VEdge> edges = readVertexEdge(graph, id, stream);
        VVertex vertex = new VVertex(graph, id, label);
        vertex.getEdges().addAll(edges);
        vertices.add(vertex);//w w  w  .  j  av  a 2  s  .  c o  m
    }
    return vertices;
}

From source file:com.vimukti.accounter.license.LicenseManager.java

private byte[] checkAndGetLicenseText(String licenseContent) {
    byte[] licenseText;
    try {/*from   w  ww.  j  av  a  2s. c om*/
        byte[] decodedBytes = Base64.decodeBase64(licenseContent.getBytes());
        ByteArrayInputStream in = new ByteArrayInputStream(decodedBytes);
        DataInputStream dIn = new DataInputStream(in);
        int textLength = dIn.readInt();
        licenseText = new byte[textLength];
        dIn.read(licenseText);
        byte[] hash = new byte[dIn.available()];
        dIn.read(hash);
        try {
            Signature signature = Signature.getInstance("SHA1withDSA");
            signature.initVerify(PUBLIC_KEY);
            signature.update(licenseText);
            if (!signature.verify(hash)) {
                throw new LicenseException("Failed to verify the license.");
            }

        } catch (InvalidKeyException e) {
            throw new LicenseException(e);
        } catch (SignatureException e) {
            throw new LicenseException(e);
        } catch (NoSuchAlgorithmException e) {
            throw new LicenseException(e);
        }

    } catch (IOException e) {
        throw new LicenseException(e);
    }

    return licenseText;
}

From source file:com.facebook.infrastructure.db.SuperColumn.java

public IColumn deserialize(DataInputStream dis, IFilter filter) throws IOException {
    if (dis.available() == 0)
        return null;

    IColumn superColumn = defreezeSuperColumn(dis);
    superColumn = filter.filter(superColumn, dis);
    if (superColumn != null) {
        if (!superColumn.isMarkedForDelete())
            fillSuperColumn(superColumn, dis);
        return superColumn;
    } else {// ww  w.j av a2  s  .  c  om
        /* read the number of columns stored */
        dis.readInt();
        /* read the size of all columns to skip */
        int size = dis.readInt();
        dis.skip(size);
        return null;
    }
}