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:ch.ethz.inf.vs.android.g54.a4.util.SnapshotCache.java

/**
 * Returns snapshot at index modulo the length of the list, if index is < 0, it returns a random snapshot
 */// w w  w .  ja  v a 2 s . c o  m
private static List<WifiReading> getSnapshot(int index, Context c) {
    String state = Environment.getExternalStorageState();

    if (Environment.MEDIA_MOUNTED.equals(state) || Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
        // We can at least read the external storage
        File root = c.getExternalCacheDir();
        File[] snapshotFiles = root.listFiles(new FilenameFilter() {

            public boolean accept(File dir, String filename) {
                if (filename.endsWith(FILE_EXTENSION)) {
                    return true;
                } else {
                    return false;
                }
            }
        });
        if (snapshotFiles.length > 0) {
            if (index < 0) {
                Random rand = new Random();
                index = rand.nextInt(snapshotFiles.length);
            } else {
                index = index % snapshotFiles.length;
            }
            try {
                // read file into a string
                FileInputStream fstream = new FileInputStream(snapshotFiles[index]);
                Log.d(TAG, snapshotFiles[index].getName());
                DataInputStream in = new DataInputStream(fstream);
                BufferedReader br = new BufferedReader(new InputStreamReader(in));
                String fileContents = "";
                String strLine;
                while ((strLine = br.readLine()) != null) {
                    fileContents += strLine;
                }

                // make a json array out of the string
                JSONArray json = new JSONArray(fileContents);

                // parse the json array
                return jsonToReadings(json);
            } catch (Exception e) {
                Log.e(TAG, "Could not read file.");
                return null;
            }
        } else {
            // there are no cached snapshots
            return null;
        }
    } else {
        // we cannot read the external storage
        return null;
    }
}

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From source file:edu.indiana.d2i.htrc.io.SequentialDataCopyJob.java

@Override
public int run(String[] args) throws Exception {
    if (args.length != 5) {
        printUsage();/*from w w w .j  av  a  2 s .c om*/
    }

    String inputPath = args[0];
    String outputPath = args[1];
    int chunkSizeInMB = Integer.valueOf(args[2]);
    String dataAPIConfClassName = args[3];
    int maxIdsPerReq = Integer.valueOf(args[4]);

    logger.info("SequentialDataCopyJob ");
    logger.info(" - input: " + inputPath);
    logger.info(" - output: " + outputPath);
    logger.info(" - chunkSizeInMB: " + chunkSizeInMB);
    logger.info(" - dataAPIConfClassName: " + dataAPIConfClassName);
    logger.info(" - maxIdsPerReq: " + maxIdsPerReq);

    Configuration conf = getConf();
    Utilities.setDataAPIConf(conf, dataAPIConfClassName, maxIdsPerReq);

    HTRCDataAPIClient client = Utilities.creatDataAPIClient(conf);

    ChunkedWriter chunkWriter = new ChunkedWriter(getConf(), chunkSizeInMB, new Path(outputPath));

    Path input = new Path(inputPath);
    FileSystem fs = input.getFileSystem(conf);
    DataInputStream fsinput = new DataInputStream(fs.open(input));
    BufferedReader reader = new BufferedReader(new InputStreamReader(fsinput));
    String line = null;
    int idNumThreshold = 100;
    int idNum = 0;
    StringBuilder idList = new StringBuilder();
    while ((line = reader.readLine()) != null) {
        idList.append(line + "|");
        if ((++idNum) >= idNumThreshold) {
            text2Seq(client.getID2Content(idList.toString()), chunkWriter);
            idList = new StringBuilder();
            idNum = 0;
        }
    }
    if (idList.length() > 0)
        text2Seq(client.getID2Content(idList.toString()), chunkWriter);

    chunkWriter.close();
    reader.close();

    return 0;
}

---

From source file:io.undertow.servlet.test.proprietry.TransferTestCase.java

@Test
public void testServletRequest() throws Exception {
    TestListener.init(2);/*w ww .  j  ava2 s.c om*/
    TestHttpClient client = new TestHttpClient();
    try {
        HttpGet get = new HttpGet(DefaultServer.getDefaultServerURL() + "/servletContext/aa");
        HttpResponse result = client.execute(get);
        Assert.assertEquals(StatusCodes.OK, result.getStatusLine().getStatusCode());
        final byte[] response = HttpClientUtils.readRawResponse(result);
        Path file = Paths.get(TXServlet.class.getResource(TXServlet.class.getSimpleName() + ".class").toURI());
        byte[] expected = new byte[(int) Files.size(file)];
        DataInputStream dataInputStream = new DataInputStream(Files.newInputStream(file));
        dataInputStream.readFully(expected);
        dataInputStream.close();
        Assert.assertArrayEquals(expected, response);
    } finally {
        client.getConnectionManager().shutdown();
    }
}

---

From source file:com.eufar.asmm.server.DownloadFunction.java

public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    System.out.println("DownloadFunction - the function started");
    ServletContext context = getServletConfig().getServletContext();
    request.setCharacterEncoding("UTF-8");
    String dir = context.getRealPath("/tmp");
    ;//  w  w w . j  a v  a 2s .com
    String filename = "";
    File fileDir = new File(dir);
    try {
        System.out.println("DownloadFunction - create the file on server");
        filename = request.getParameterValues("filename")[0];
        String xmltree = request.getParameterValues("xmltree")[0];

        // format xml code to pretty xml code
        Document doc = DocumentHelper.parseText(xmltree);
        StringWriter sw = new StringWriter();
        OutputFormat format = OutputFormat.createPrettyPrint();
        format.setIndent(true);
        format.setIndentSize(4);
        XMLWriter xw = new XMLWriter(sw, format);
        xw.write(doc);

        Writer out = new BufferedWriter(
                new OutputStreamWriter(new FileOutputStream(dir + "/" + filename), "UTF-8"));
        out.append(sw.toString());
        out.flush();
        out.close();
    } catch (Exception ex) {
        System.out.println("ERROR during rendering: " + ex);
    }
    try {
        System.out.println("DownloadFunction - send file to user");
        ServletOutputStream out = response.getOutputStream();
        File file = new File(dir + "/" + filename);
        String mimetype = context.getMimeType(filename);
        response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
        response.setContentLength((int) file.length());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
        response.setHeader("Pragma", "private");
        response.setHeader("Cache-Control", "private, must-revalidate");
        DataInputStream in = new DataInputStream(new FileInputStream(file));
        int length;
        while ((in != null) && ((length = in.read(bbuf)) != -1)) {
            out.write(bbuf, 0, length);
        }
        in.close();
        out.flush();
        out.close();
        FileUtils.cleanDirectory(fileDir);
    } catch (Exception ex) {
        System.out.println("ERROR during downloading: " + ex);
    }
    System.out.println("DownloadFunction - file ready to be donwloaded");
}

---

From source file:gridool.util.xfer.TransferUtils.java

public static void sendfile(@Nonnull final File file, final long fromPos, final long count,
        @Nullable final String writeDirPath, @Nonnull final InetAddress dstAddr, final int dstPort,
        final boolean append, final boolean sync, @Nonnull final TransferClientHandler handler)
        throws IOException {
    if (!file.exists()) {
        throw new IllegalArgumentException(file.getAbsolutePath() + " does not exist");
    }/*  www.j  av a2  s .c  om*/
    if (!file.isFile()) {
        throw new IllegalArgumentException(file.getAbsolutePath() + " is not file");
    }
    if (!file.canRead()) {
        throw new IllegalArgumentException(file.getAbsolutePath() + " cannot read");
    }

    final SocketAddress dstSockAddr = new InetSocketAddress(dstAddr, dstPort);
    SocketChannel channel = null;
    Socket socket = null;
    final OutputStream out;
    try {
        channel = SocketChannel.open();
        socket = channel.socket();
        socket.connect(dstSockAddr);
        out = socket.getOutputStream();
    } catch (IOException e) {
        LOG.error("failed to connect: " + dstSockAddr, e);
        IOUtils.closeQuietly(channel);
        NetUtils.closeQuietly(socket);
        throw e;
    }

    DataInputStream din = null;
    if (sync) {
        InputStream in = socket.getInputStream();
        din = new DataInputStream(in);
    }
    final DataOutputStream dos = new DataOutputStream(out);
    final StopWatch sw = new StopWatch();
    FileInputStream src = null;
    final long nbytes;
    try {
        src = new FileInputStream(file);
        FileChannel fc = src.getChannel();

        String fileName = file.getName();
        IOUtils.writeString(fileName, dos);
        IOUtils.writeString(writeDirPath, dos);
        long xferBytes = (count == -1L) ? fc.size() : count;
        dos.writeLong(xferBytes);
        dos.writeBoolean(append); // append=false
        dos.writeBoolean(sync);
        if (handler == null) {
            dos.writeBoolean(false);
        } else {
            dos.writeBoolean(true);
            handler.writeAdditionalHeader(dos);
        }

        // send file using zero-copy send
        nbytes = fc.transferTo(fromPos, xferBytes, channel);
        if (LOG.isDebugEnabled()) {
            LOG.debug("Sent a file '" + file.getAbsolutePath() + "' of " + nbytes + " bytes to "
                    + dstSockAddr.toString() + " in " + sw.toString());
        }

        if (sync) {// receive ack in sync mode
            long remoteRecieved = din.readLong();
            if (remoteRecieved != xferBytes) {
                throw new IllegalStateException(
                        "Sent " + xferBytes + " bytes, but remote node received " + remoteRecieved + " bytes");
            }
        }

    } catch (FileNotFoundException e) {
        LOG.error(PrintUtils.prettyPrintStackTrace(e, -1));
        throw e;
    } catch (IOException e) {
        LOG.error(PrintUtils.prettyPrintStackTrace(e, -1));
        throw e;
    } finally {
        IOUtils.closeQuietly(src);
        IOUtils.closeQuietly(din, dos);
        IOUtils.closeQuietly(channel);
        NetUtils.closeQuietly(socket);
    }
}

---

From source file:fileInfo.java

/**
 * Normal constructor with one filename; file is opened and saved.
 *//* www .  j a  v  a  2s  .  c  o  m*/
fileInfo(String filename) {
    symbol = new node[MAXLINECOUNT + 2];
    other = null; // allocated later!
    try {
        file = new DataInputStream(new FileInputStream(filename));
    } catch (IOException e) {
        System.err.println("Diff can't read file " + filename);
        System.err.println("Error Exception was:" + e);
        System.exit(1);
    }
}

---

From source file:com.cloudmaster.cmp.util.AlarmSystem.transfer.HttpSender.java

public ResponseObject send(TransportObject object) throws Exception {
    ResponseObject rs = new ResponseObject();
    ByteArrayOutputStream bOs = null;
    DataOutputStream dOs = null;/*from   w  ww  .j a  v a2  s .c om*/
    DataInputStream dIs = null;
    HttpClient client;
    PostMethod meth = null;
    byte[] rawData;
    try {
        bOs = new ByteArrayOutputStream();
        dOs = new DataOutputStream(bOs);
        object.toStream(dOs);
        bOs.flush();
        rawData = bOs.toByteArray();

        client = new HttpClient();
        client.setConnectionTimeout(this.timeout);
        client.setTimeout(this.datatimeout);
        client.setHttpConnectionFactoryTimeout(this.timeout);

        meth = new PostMethod(object.getValue(SERVER_URL));
        // meth = new UTF8PostMethod(url);
        meth.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET, ENCODING);
        // meth.addParameter(SERVER_ARGS, new String(rawData,"UTF-8"));

        // meth.setRequestBody(new String(rawData));
        // meth.setRequestBody(new String(rawData,"UTF-8"));

        byte[] base64Array = Base64.encode(rawData).getBytes();
        meth.setRequestBody(new String(base64Array));

        // System.out.println(new String(rawData));

        client.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
                new DefaultHttpMethodRetryHandler(1, false));
        client.executeMethod(meth);

        dIs = new DataInputStream(meth.getResponseBodyAsStream());

        if (meth.getStatusCode() == HttpStatus.SC_OK) {

            Header errHeader = meth.getResponseHeader(HDR_ERROR);

            if (errHeader != null) {
                rs.setError(meth.getResponseBodyAsString());
                return rs;
            }

            rs = ResponseObject.fromStream(dIs);

            return rs;
        } else {
            meth.releaseConnection();
            throw new IOException("Connection failure: " + meth.getStatusLine().toString());
        }
    } finally {
        if (meth != null) {
            meth.releaseConnection();
        }
        if (bOs != null) {
            bOs.close();
        }
        if (dOs != null) {
            dOs.close();
        }
        if (dIs != null) {
            dIs.close();
        }
    }
}

---

From source file:jetbrains.exodus.entitystore.FileSystemBlobVaultOld.java

protected FileSystemBlobVaultOld(@NotNull final String parentDirectory, @NotNull final String blobsDirectory,
        @NotNull final String blobExtension, @NotNull final BlobHandleGenerator blobHandleGenerator,
        final int expectedVersion) throws IOException {
    this.blobsDirectory = blobsDirectory;
    this.blobExtension = blobExtension;
    location = new File(parentDirectory, blobsDirectory);
    this.blobHandleGenerator = blobHandleGenerator;
    size = new AtomicLong(UNKNOWN_SIZE);
    //noinspection ResultOfMethodCallIgnored
    location.mkdirs();/*from  w  ww .ja v  a 2 s. c o  m*/
    // load version
    final File versionFile = new File(location, VERSION_FILE);
    if (versionFile.exists()) {
        try (DataInputStream input = new DataInputStream(new FileInputStream(versionFile))) {
            version = input.readInt();
        }
        if (expectedVersion != version) {
            throw new UnexpectedBlobVaultVersionException("Unexpected FileSystemBlobVault version: " + version);
        }
    } else {
        final File[] files = location.listFiles();
        final boolean hasFiles = files != null && files.length > 0;
        if (!hasFiles) {
            version = expectedVersion;
        } else {
            version = EXPECTED_VERSION;
            if (expectedVersion != version) {
                throw new UnexpectedBlobVaultVersionException(
                        "Unexpected FileSystemBlobVault version: " + version);
            }
        }
        try (DataOutputStream output = new DataOutputStream(new FileOutputStream(versionFile))) {
            output.writeInt(expectedVersion);
        }
    }
}

---

From source file:com.aliyun.odps.ogg.handler.datahub.DatahubHandler.java

public static int getSkipSendTimes(String fileName, OggAlarm oggAlarm) {
    File handlerInfoFile = new File(fileName);
    if (handlerInfoFile.exists() && !handlerInfoFile.isDirectory()) {
        DataInputStream in = null;
        try {/*w  ww  .ja v  a  2  s  .  com*/
            in = new DataInputStream(new FileInputStream(handlerInfoFile));
            return in.readInt();
        } catch (IOException e) {
            logger.warn("Error reading handler info file, may cause duplication ", e);
            oggAlarm.warn("Error reading handler info file, may cause duplication ", e);
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    logger.warn("Close handler info file failed. ", e);
                    oggAlarm.warn("Close handler info file failed. ", e);
                }
            }
        }
    }
    return 0;
}

---

From source file:com.atilika.kuromoji.trie.DoubleArrayTrie.java

/**
 * Load Stored data/*w w  w. jav a  2  s  .  c om*/
 *
 * @param input  input stream to read the double array trie from
 * @return double array trie, not null
 * @throws IOException if an IO error occured during reading the double array trie
 */
public static DoubleArrayTrie read(InputStream input) throws IOException {
    DoubleArrayTrie trie = new DoubleArrayTrie();
    DataInputStream dis = new DataInputStream(new BufferedInputStream(input));

    trie.compact = dis.readBoolean();
    int baseCheckSize = dis.readInt(); // Read size of baseArr and checkArr
    int tailSize = dis.readInt(); // Read size of tailArr
    ReadableByteChannel channel = Channels.newChannel(dis);

    ByteBuffer tmpBaseBuffer = ByteBuffer.allocate(baseCheckSize * 4);
    channel.read(tmpBaseBuffer);
    tmpBaseBuffer.rewind();
    trie.baseBuffer = tmpBaseBuffer.asIntBuffer();

    ByteBuffer tmpCheckBuffer = ByteBuffer.allocate(baseCheckSize * 4);
    channel.read(tmpCheckBuffer);
    tmpCheckBuffer.rewind();
    trie.checkBuffer = tmpCheckBuffer.asIntBuffer();

    ByteBuffer tmpTailBuffer = ByteBuffer.allocate(tailSize * 2);
    channel.read(tmpTailBuffer);
    tmpTailBuffer.rewind();
    trie.tailBuffer = tmpTailBuffer.asCharBuffer();

    input.close();
    return trie;
}

---

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