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:com.aliyun.openservices.tablestore.hadoop.Credential.java

public static Credential deserialize(String in) {
    if (in == null) {
        return null;
    }/* w w  w .  ja  v a  2 s  .  c o  m*/
    byte[] buf = Base64.decodeBase64(in);
    ByteArrayInputStream is = new ByteArrayInputStream(buf);
    DataInputStream din = new DataInputStream(is);
    try {
        return read(din);
    } catch (IOException ex) {
        return null;
    }
}

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From source file:lirmm.inria.fr.data.DataMatrix.java

protected void loadMatrix(String file, int rowDimension, int columnDimension) {
    FileInputStream fstream;//from   ww  w. j  av  a  2s . co  m
    try {
        fstream = new FileInputStream(file);
        // Get the object of DataInputStream
        DataInputStream in = new DataInputStream(fstream);

        Set<Integer> cI = new HashSet();
        for (int i = 0; i < rowDimension; i++) {
            cI.add(i);
        }
        Set<Integer> cJ = new HashSet();
        for (int j = 0; j < columnDimension; j++) {
            cJ.add(j);
        }
        try (BufferedReader br = new BufferedReader(new InputStreamReader(in))) {
            String str;
            int z = 0;
            while ((str = br.readLine()) != null) {
                str = str.trim();
                if (str.startsWith("#")) {
                    continue;
                }
                if (str.trim().length() == 0) {
                    continue;
                }
                z++;
                StringTokenizer st = new StringTokenizer(str);
                String row_id = st.nextToken();
                String column_id = st.nextToken();
                double rating = Double.parseDouble(st.nextToken());
                Integer i, j;
                if (rowsMapping.containsKey(row_id)) {
                    i = rowsMapping.get(row_id);
                } else {
                    i = cI.iterator().next();
                    //                        i = cI.get(0);
                    cI.remove(i);
                    rowsMapping.put(row_id, i);
                }
                if (columnsMapping.containsKey(column_id)) {
                    j = columnsMapping.get(column_id);
                } else {
                    j = cJ.iterator().next();
                    //                        j = cJ.get(0);
                    cJ.remove(j);
                    columnsMapping.put(column_id, j);
                }
                setEntry(i, j, rating);
            }
        }

        for (OpenLongToDoubleHashMap.Iterator iterator = getEntries().iterator(); iterator.hasNext();) {
            iterator.advance();
            final long key = iterator.key();
            final int i, j;
            if (isTransposed()) {
                j = (int) (key / getRowDimension());
                i = (int) (key % getRowDimension());
            } else {
                i = (int) (key / getColumnDimension());
                j = (int) (key % getColumnDimension());
            }
            double v = rowNonZeroEntries.get(i);
            rowNonZeroEntries.put(i, v + 1);
            v = columnNonZeroEntries.get(j);
            columnNonZeroEntries.put(j, v + 1);
        }

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

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From source file:com.pdfhow.diff.UploadServlet.java

/**
 * Handles the HTTP <code>GET</code> method.
 *
 * @param request//from w w  w. j  a  va  2 s .  c o  m
 *            servlet request
 * @param response
 *            servlet response
 * @throws ServletException
 *             if a servlet-specific error occurs
 * @throws IOException
 *             if an I/O error occurs
 */
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    if (request.getParameter("getfile") != null && !request.getParameter("getfile").isEmpty()) {
        File file = new File(
                request.getServletContext().getRealPath("/") + "imgs/" + request.getParameter("getfile"));
        if (file.exists()) {
            int bytes = 0;
            ServletOutputStream op = response.getOutputStream();

            response.setContentType(getMimeType(file));
            response.setContentLength((int) file.length());
            response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\"");

            byte[] bbuf = new byte[1024];
            DataInputStream in = new DataInputStream(new FileInputStream(file));

            while ((in != null) && ((bytes = in.read(bbuf)) != -1)) {
                op.write(bbuf, 0, bytes);
            }

            in.close();
            op.flush();
            op.close();
        }
    } else if (request.getParameter("delfile") != null && !request.getParameter("delfile").isEmpty()) {
        File file = new File(
                request.getServletContext().getRealPath("/") + "imgs/" + request.getParameter("delfile"));
        if (file.exists()) {
            file.delete(); // TODO:check and report success
        }
    } else if (request.getParameter("getthumb") != null && !request.getParameter("getthumb").isEmpty()) {
        File file = new File(
                request.getServletContext().getRealPath("/") + "imgs/" + request.getParameter("getthumb"));
        if (file.exists()) {
            System.out.println(file.getAbsolutePath());
            String mimetype = getMimeType(file);
            if (mimetype.endsWith("png") || mimetype.endsWith("jpeg") || mimetype.endsWith("jpg")
                    || mimetype.endsWith("gif")) {
                BufferedImage im = ImageIO.read(file);
                if (im != null) {
                    BufferedImage thumb = Scalr.resize(im, 75);
                    ByteArrayOutputStream os = new ByteArrayOutputStream();
                    if (mimetype.endsWith("png")) {
                        ImageIO.write(thumb, "PNG", os);
                        response.setContentType("image/png");
                    } else if (mimetype.endsWith("jpeg")) {
                        ImageIO.write(thumb, "jpg", os);
                        response.setContentType("image/jpeg");
                    } else if (mimetype.endsWith("jpg")) {
                        ImageIO.write(thumb, "jpg", os);
                        response.setContentType("image/jpeg");
                    } else {
                        ImageIO.write(thumb, "GIF", os);
                        response.setContentType("image/gif");
                    }
                    ServletOutputStream srvos = response.getOutputStream();
                    response.setContentLength(os.size());
                    response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\"");
                    os.writeTo(srvos);
                    srvos.flush();
                    srvos.close();
                }
            }
        } // TODO: check and report success
    } else {
        PrintWriter writer = response.getWriter();
        writer.write("call POST with multipart form data");
    }
}

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From source file:com.csipsimple.backup.SipSharedPreferencesHelper.java

@Override
public void performBackup(ParcelFileDescriptor oldState, BackupDataOutput data, ParcelFileDescriptor newState) {
    boolean forceBackup = (oldState == null);

    long fileModified = 1;
    if (prefsFiles != null) {
        fileModified = prefsFiles.lastModified();
    }//from ww w  .  j  a  v a  2  s  .  com
    try {
        if (!forceBackup) {
            FileInputStream instream = new FileInputStream(oldState.getFileDescriptor());
            DataInputStream in = new DataInputStream(instream);
            long lastModified = in.readLong();
            in.close();

            if (lastModified < fileModified) {
                forceBackup = true;
            }
        }
    } catch (IOException e) {
        Log.e(THIS_FILE, "Cannot manage previous local backup state", e);
        forceBackup = true;
    }

    Log.d(THIS_FILE, "Will backup profiles ? " + forceBackup);
    if (forceBackup) {
        JSONObject settings = SipProfileJson.serializeSipSettings(mContext);
        try {
            writeData(data, settings.toString());
        } catch (IOException e) {
            Log.e(THIS_FILE, "Cannot manage remote backup", e);
        }
    }

    try {
        FileOutputStream outstream = new FileOutputStream(newState.getFileDescriptor());
        DataOutputStream out = new DataOutputStream(outstream);
        out.writeLong(fileModified);
        out.close();
    } catch (IOException e) {
        Log.e(THIS_FILE, "Cannot manage final local backup state", e);
    }

}

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From source file:edu.cornell.med.icb.goby.alignments.perms.PermutationReader.java

private void makeIndex(FastBufferedInputStream inputStream) throws IOException {
    input.position(0);/*from ww  w.  j a  v a  2 s  .c o  m*/
    final ObjectArrayList<Block> blocks = new ObjectArrayList<Block>();

    final DataInputStream dataInput = new DataInputStream(
            new FastBufferedInputStream(new FileInputStream(basename + ".perm")));
    try {
        long offset = 0;

        while (dataInput.available() > 0) {

            final Block block = new Block();
            block.offset = offset;
            block.n = dataInput.readInt();
            block.firstSmallIndex = dataInput.readInt();
            dataInput.skip(block.n * 4L);
            blocks.add(block);
            offset += block.n * 4L + 8L;
        }
        Collections.sort(blocks, SMALL_INDEX_COMPARATOR);
        indexBlocks = blocks.toArray(new Block[blocks.size()]);
    } finally {
        dataInput.close();
    }
}

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From source file:ro.bmocanu.trafficproxy.peers.PeerCommunicationServer.java

/**
 * {@inheritDoc}//from ww w  . j ava2 s .  com
 */
@Override
protected void internalRun() throws Exception {
    if (!clientSocket.isClosed() && peerChannel.isConnectionUp()) {
        // nothing to do if the connection is still on
        return;
    }

    try {
        LOG.info("Waiting for incoming peer connections");
        clientSocket = serverSocket.accept();

        LOG.info("Peer connection established");
        peerChannel.setInputStream(new DataInputStream(new BufferedInputStream(clientSocket.getInputStream())));
        peerChannel.setOutputStream(
                new DataOutputStream(new BufferedOutputStream(clientSocket.getOutputStream())));
        peerChannel.setConnectionUp(true);

    } catch (SocketTimeoutException exception) {
        // this is ok, it is expected
    }
}

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From source file:jp.co.cyberagent.jenkins.plugins.DeployStrategy.java

public String getVersion() {
    File versionFile = new File(mBuild.getWorkspace().getRemote() + "/VERSION");

    if (versionFile.exists()) {
        FileInputStream stream = null;
        DataInputStream in = null;
        InputStreamReader reader = null;
        BufferedReader br = null;
        try {//from ww w . ja  va 2s . c o m
            stream = new FileInputStream(versionFile);
            in = new DataInputStream(stream);
            reader = new InputStreamReader(in);
            br = new BufferedReader(reader);
            return br.readLine();
        } catch (Exception e) {
            getLogger().println(TAG + "Error: " + e.getMessage());
        } finally {
            try {
                if (stream != null)
                    stream.close();
                if (br != null)
                    br.close();
                if (reader != null)
                    reader.close();
                if (in != null)
                    in.close();
            } catch (IOException e) {
                getLogger().println(TAG + "Error: " + e.getMessage());
            }
        }
    }
    return null;
}

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From source file:com.rhythm.louie.info.DownloadServlet.java

private void downloadFile(HttpServletRequest request, HttpServletResponse response, String filePath)
        throws IOException {
    if (filePath.isEmpty()) {
        response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return;//from  w w w . java  2  s  .  co  m
    }
    File file = new File(filePath);
    int length = 0;
    try (ServletOutputStream outStream = response.getOutputStream()) {
        ServletContext context = getServletConfig().getServletContext();

        String mimetype = context.getMimeType(filePath);

        // sets response content type
        if (mimetype == null) {
            mimetype = "application/octet-stream";
        }
        response.setContentType(mimetype);
        response.setContentLength((int) file.length());
        String fileName = (new File(filePath)).getName();

        // sets HTTP header
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        byte[] byteBuffer = new byte[4096];
        // reads the file's bytes and writes them to the response stream
        try (DataInputStream in = new DataInputStream(new FileInputStream(file))) {
            // reads the file's bytes and writes them to the response stream
            while ((in != null) && ((length = in.read(byteBuffer)) != -1)) {
                outStream.write(byteBuffer, 0, length);
            }
        }
    }
}

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From source file:ja.lingo.engine.mergedindex.ChannelMergedIndex.java

public ChannelMergedIndex(String fileName, Map<String, IDictionaryIndex> indexFileNameToReaderMap)
        throws IOException {
    Arguments.assertNotNull("fileName", fileName);
    Arguments.assertNotNull("indexFileNameToReaderMap", indexFileNameToReaderMap);

    this.fileName = fileName;

    fisMappedByteBufferWrapper = new MappedByteBufferWrapper(fileName);

    ISliceReader sliceReader = new ByteBufferSliceReader(fisMappedByteBufferWrapper.getMappedByteBuffer());

    // read position + fill readerIntIdToReaderMap
    {//w  w  w . j  a v  a 2  s .  c o m
        ByteBuffer buffer = sliceReader.getSlice(SLICE_READER_INT_ID_TO_READER_ID_MAP);
        byte[] bytes = new byte[buffer.limit()];
        buffer.position(0);
        buffer.get(bytes);

        try {
            readerIntIdToReaderMap = _deserializeReaderIdToReaderMap(
                    new DataInputStream(new ByteArrayInputStream(bytes)), indexFileNameToReaderMap);
        } catch (IOException e) {
            Files.close(fisMappedByteBufferWrapper);
            throw e;
        }
    }

    groupsIndexLengthIntReader = new IntBufferIntReader(
            sliceReader.getSlice(SLICE_GROUPS_INDEX_LENGTH_LIST).asIntBuffer());
    groupsIntReader = new IntBufferIntReader(sliceReader.getSlice(SLICE_GROUPS_LIST).asIntBuffer());
}

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From source file:com.lightboxtechnologies.spectrum.MRCoffeeClient.java

public void open(File pipe) throws IOException {
    sock.connect(new AFUNIXSocketAddress(pipe));
    in = new DataInputStream(sock.getInputStream());
    out = new DataOutputStream(sock.getOutputStream());
}

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