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.cloudera.branchreduce.impl.thrift.Writables.java

public static <T extends Writable> T fromByteBuffer(ByteBuffer bb, Class<T> clazz) {
    T instance = ReflectionUtils.newInstance(clazz, DUMMY);
    try {/*from ww  w .  j a v  a2 s . c  o m*/
        instance.readFields(
                new DataInputStream(new ByteArrayInputStream(bb.array(), bb.arrayOffset(), bb.limit())));
    } catch (IOException e) {
        LOG.error("Deserialization error for class: " + clazz, e);
    }
    return instance;
}

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From source file:Main.java

static boolean isJPEG(File file) throws IOException {
    return internalIsJPEG(new DataInputStream(new BufferedInputStream(new FileInputStream(file))));
}

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From source file:Main.java

public static int getSuVersionCode() {
    Process process = null;/*from   w w  w .  ja  va2s .c  o m*/
    String inLine = null;

    try {
        process = Runtime.getRuntime().exec("sh");
        DataOutputStream os = new DataOutputStream(process.getOutputStream());
        BufferedReader is = new BufferedReader(
                new InputStreamReader(new DataInputStream(process.getInputStream())), 64);
        os.writeBytes("su -v\n");

        // We have to hold up the thread to make sure that we're ready to read
        // the stream, using increments of 5ms makes it return as quick as
        // possible, and limiting to 1000ms makes sure that it doesn't hang for
        // too long if there's a problem.
        for (int i = 0; i < 400; i++) {
            if (is.ready()) {
                break;
            }
            try {
                Thread.sleep(5);
            } catch (InterruptedException e) {
                Log.w(TAG, "Sleep timer got interrupted...");
            }
        }
        if (is.ready()) {
            inLine = is.readLine();
            if (inLine != null && Integer.parseInt(inLine.substring(0, 1)) > 2) {
                inLine = null;
                os.writeBytes("su -V\n");
                inLine = is.readLine();
                if (inLine != null) {
                    return Integer.parseInt(inLine);
                }
            } else {
                return 0;
            }
        } else {
            os.writeBytes("exit\n");
        }
    } catch (IOException e) {
        Log.e(TAG, "Problems reading current version.", e);
        return 0;
    } finally {
        if (process != null) {
            process.destroy();
        }
    }
    return 0;
}

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From source file:Main.java

public String downloadWWWPage(URL pageURL) throws Exception {
    String host, file;/* ww  w .  j a v a 2  s .  co m*/
    host = pageURL.getHost();
    file = pageURL.getFile();

    InputStream pageStream = getWWWPageStream(host, file);
    if (pageStream == null) {
        return "";
    }

    DataInputStream in = new DataInputStream(pageStream);
    StringBuffer pageBuffer = new StringBuffer();
    String line;

    while ((line = in.readUTF()) != null) {
        pageBuffer.append(line);
    }
    in.close();
    return pageBuffer.toString();
}

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From source file:com.ccoe.build.core.utils.FileUtils.java

public static String readFile(File file) {
    BufferedReader br = null;//w ww.  j ava 2  s .c om
    DataInputStream in = null;
    StringBuffer sBuffer = new StringBuffer();

    try {
        in = new DataInputStream(new FileInputStream(file));
        br = new BufferedReader(new InputStreamReader(in));

        String sCurrentLine = null;

        while ((sCurrentLine = br.readLine()) != null) {
            sBuffer.append(sCurrentLine);
            sBuffer.append("\n");
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            in.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
    return sBuffer.toString().trim();
}

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From source file:Main.java

public static float[] readBinAverageShapeArray(String dir, String fileName, int size) {
    float x;/*from  w  w  w .  j ava  2  s.  c  o m*/
    int i = 0;
    float[] tab = new float[size];

    // theses values was for 64140 points average shape
    //float minX = -90.3540f, minY = -22.1150f, minZ = -88.7720f, maxX = 101.3830f, maxY = 105.1860f, maxZ = 102.0530f;

    // values for average shape after simplification (8489 points)
    float maxX = 95.4549f, minX = -85.4616f, maxY = 115.0088f, minY = -18.0376f, maxZ = 106.7329f,
            minZ = -90.4051f;

    float deltaX = (maxX - minX) / 2.0f;
    float deltaY = (maxY - minY) / 2.0f;
    float deltaZ = (maxZ - minZ) / 2.0f;

    float midX = (maxX + minX) / 2.0f;
    float midY = (maxY + minY) / 2.0f;
    float midZ = (maxZ + minZ) / 2.0f;

    File sdLien = Environment.getExternalStorageDirectory();
    File inFile = new File(sdLien + File.separator + dir + File.separator + fileName);
    Log.d(TAG, "path of file : " + inFile);
    if (!inFile.exists()) {
        throw new RuntimeException("File doesn't exist");
    }
    DataInputStream in = null;
    try {
        in = new DataInputStream(new FileInputStream(inFile));
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    try {
        //read first x
        x = in.readFloat();
        //Log.d(TAG,"first Vertices = "+x);
        while (true) {

            tab[i] = (x - midX) / deltaX; //rescale x
            i++;

            //read y
            x = in.readFloat();
            tab[i] = (x - midY) / deltaY; //rescale y
            i++;

            //read z
            x = in.readFloat();
            tab[i] = (x - midZ) / deltaZ; //rescale z
            i++;

            //read x
            x = in.readFloat();
        }
    } catch (EOFException e) {
        try {
            Log.d(TAG, "close");
            in.close();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (in != null) {
            try { //free ressources
                Log.d(TAG, "close");
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return tab;
}

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From source file:PNGDecoder.java

public static BufferedImage decode(InputStream in) throws IOException {
    DataInputStream dataIn = new DataInputStream(in);
    readSignature(dataIn);//from   w  w  w  . ja  v a2 s.  c  om
    PNGData chunks = readChunks(dataIn);

    long widthLong = chunks.getWidth();
    long heightLong = chunks.getHeight();
    if (widthLong > Integer.MAX_VALUE || heightLong > Integer.MAX_VALUE)
        throw new IOException("That image is too wide or tall.");
    int width = (int) widthLong;
    int height = (int) heightLong;

    ColorModel cm = chunks.getColorModel();
    WritableRaster raster = chunks.getRaster();

    BufferedImage image = new BufferedImage(cm, raster, false, null);

    return image;
}

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From source file:Main.java

public void run() {
    while (true) {
        try {/* w w w.ja  va2  s .  c  o  m*/
            System.out.println("Waiting for client on port " + serverSocket.getLocalPort() + "...");
            Socket server = serverSocket.accept();

            System.out.println("Just connected to " + server.getRemoteSocketAddress());
            DataInputStream in = new DataInputStream(server.getInputStream());
            System.out.println(in.readUTF());

            DataOutputStream out = new DataOutputStream(server.getOutputStream());
            out.writeUTF("Thank you for connecting to " + server.getLocalSocketAddress() + "\nGoodbye!");

            server.close();
        } catch (SocketTimeoutException s) {
            System.out.println("Socket timed out!");
            break;
        } catch (IOException e) {
            e.printStackTrace();
            break;
        }
    }
}

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From source file:com.polivoto.networking.ServicioDeIPExterna.java

public static String obtenerIPServidorRemoto() {
    String ip = null;//  w w w  . j a va2  s. c  o m
    try {
        HttpURLConnection con = (HttpURLConnection) new URL(REMOTE_HOST).openConnection();
        DataInputStream entrada = new DataInputStream(con.getInputStream());
        int length;
        byte[] chunk = new byte[64];
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        while ((length = entrada.read(chunk)) != -1)
            baos.write(chunk, 0, length);
        JSONObject json = new JSONObject(baos.toString());
        baos.close();
        entrada.close();
        con.disconnect();
        ip = json.getString("content");
    } catch (JSONException | IOException e) {
        e.printStackTrace();
    }
    System.out.println("IP servidor remoto: " + ip);
    return ip;
}

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From source file:com.cloud.utils.crypt.RSAHelper.java

private static RSAPublicKey readKey(String key) throws Exception {
    byte[] encKey = Base64.decodeBase64(key.split(" ")[1]);
    DataInputStream dis = new DataInputStream(new ByteArrayInputStream(encKey));

    byte[] header = readElement(dis);
    String pubKeyFormat = new String(header);
    if (!pubKeyFormat.equals("ssh-rsa"))
        throw new RuntimeException("Unsupported format");

    byte[] publicExponent = readElement(dis);
    byte[] modulus = readElement(dis);

    KeySpec spec = new RSAPublicKeySpec(new BigInteger(modulus), new BigInteger(publicExponent));
    KeyFactory keyFactory = KeyFactory.getInstance("RSA", BouncyCastleProvider.PROVIDER_NAME);
    RSAPublicKey pubKey = (RSAPublicKey) keyFactory.generatePublic(spec);

    return pubKey;
}

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