Example usage for java.io BufferedInputStream BufferedInputStream

Introduction

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

Prototype

public BufferedInputStream(InputStream in)

Source Link

Document

Creates a BufferedInputStream and saves its argument, the input stream in, for later use.

Usage

From source file:Main.java

/**
 * Detect the XML encoding of the document
 * //w  ww  . j a  v a  2  s .  co  m
 * @param is The input stream
 * @return The encoding
 * @throws IOException
 */
public static String getEncoding(InputStream is) throws IOException {
    if (!is.markSupported())
        is = new BufferedInputStream(is);

    byte[] buffer = readBuffer(is);
    return getXMLEncoding(buffer);
}

From source file:Main.java

@SuppressWarnings("SameParameterValue")
public static Bitmap fetchAndRescaleBitmap(String uri, int width, int height) throws IOException {
    URL url = new URL(uri);
    BufferedInputStream is = null;
    try {/*w w  w.jav  a2s.  c  om*/
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        is = new BufferedInputStream(urlConnection.getInputStream());
        is.mark(MAX_READ_LIMIT_PER_IMG);
        int scaleFactor = findScaleFactor(width, height, is);
        Log.d(TAG, "Scaling bitmap " + uri + " by factor " + scaleFactor + " to support " + width + "x" + height
                + "requested dimension");
        is.reset();
        return scaleBitmap(scaleFactor, is);
    } finally {
        if (is != null) {
            is.close();
        }
    }
}

From source file:Main.java

public static Document parseDoc(final InputStream is)
        throws ParserConfigurationException, SAXException, IOException {
    try {/*from  w w  w .ja  v  a  2 s.  c o  m*/
        BufferedInputStream in = new BufferedInputStream(is);
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        InputSource source = new InputSource(in);
        return builder.parse(source);
    } finally {
        is.close();
    }
}

From source file:Main.java

/**
 * Reads an object from an XML file./*  www. j  av a2 s. com*/
 * 
 * @param filename the filename
 * 
 * @return the object
 * 
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static Object readBeanFromFile(String filename) throws IOException {
    XMLDecoder decoder = null;
    try {
        decoder = new XMLDecoder(new BufferedInputStream(new FileInputStream(filename)));
        return decoder.readObject();
    } finally {
        if (decoder != null) {
            decoder.close();
        }
    }
}

From source file:Main.java

/**
 * This method deserializes an object from an input stream.
 *
 * @param file The input file/*ww w. java 2s.c om*/
 * @return The deserialized object
 * @exception IOException IOError
 */
public static Object deserializeObject(File file) throws IOException, ClassNotFoundException {
    FileInputStream fis = new FileInputStream(file);
    Object object = null;
    try {
        ObjectInputStream ois = new ObjectInputStream(new BufferedInputStream(fis));
        object = ois.readObject();
    } finally {
        fis.close();
    }
    return object;
}

From source file:Main.java

/**
 * @param url/*www  .  j ava  2  s . c o m*/
 * @return
 */
public static Bitmap getBitMapFromURL(URL url) {
    Bitmap mBitmap = null;

    try {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoInput(true);
        conn.connect();
        conn.getContentLength();
        InputStream is = conn.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        mBitmap = BitmapFactory.decodeStream(bis);
        bis.close();
        is.close();
    } catch (Exception e) {
        Log.e("Exception in MapScrollActivity.getBitmapFromURL", "" + e.getMessage());
        e.printStackTrace();
    }
    return mBitmap;
}

From source file:Main.java

public static Document parseDoc(final InputStream is)
        throws ParserConfigurationException, SAXException, IOException {
    try {//  w w  w . j  ava  2 s.  c o m
        BufferedInputStream in = new BufferedInputStream(is);
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
        factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
        factory.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
        DocumentBuilder builder = factory.newDocumentBuilder();
        InputSource source = new InputSource(in);
        return builder.parse(source);
    } finally {
        is.close();
    }
}

From source file:Main.java

public static String getBinaryHash(File apk, String algo) {
    FileInputStream fis = null;/*  ww w  .  ja  v a  2s  .  c o m*/
    BufferedInputStream bis = null;
    try {
        MessageDigest md = MessageDigest.getInstance(algo);
        fis = new FileInputStream(apk);
        bis = new BufferedInputStream(fis);

        byte[] dataBytes = new byte[524288];
        int nread = 0;

        while ((nread = bis.read(dataBytes)) != -1)
            md.update(dataBytes, 0, nread);

        byte[] mdbytes = md.digest();
        return toHexString(mdbytes);
    } catch (IOException e) {
        Log.e("FDroid", "Error reading \"" + apk.getAbsolutePath() + "\" to compute " + algo + " hash.");
        return null;
    } catch (NoSuchAlgorithmException e) {
        Log.e("FDroid", "Device does not support " + algo + " MessageDisgest algorithm");
        return null;
    } finally {
        closeQuietly(fis);
    }
}

From source file:Main.java

/**
 *
 * @param f/*ww  w.j a  v  a 2s. com*/
 * @throws Exception
 */
private static X509Certificate readCertificate(File f) throws CertificateException, IOException {
    CertificateFactory cf = CertificateFactory.getInstance("X.509");

    // Use BufferedInputStream (which supports mark and reset) so that each
    // generateCertificate call consumes one certificate.
    BufferedInputStream in = new BufferedInputStream(new FileInputStream(f));
    X509Certificate cert = (X509Certificate) cf.generateCertificate(in);
    in.close();
    return cert;
}

From source file:Main.java

public static boolean unzip(InputStream inputStream, String dest, boolean replaceIfExists) {

    final int BUFFER_SIZE = 4096;

    BufferedOutputStream bufferedOutputStream = null;

    boolean succeed = true;

    try {//from   ww w  . j  a v a  2 s. c o m
        ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(inputStream));
        ZipEntry zipEntry;

        while ((zipEntry = zipInputStream.getNextEntry()) != null) {

            String zipEntryName = zipEntry.getName();

            //             if(!zipEntry.isDirectory()) {
            //                 File fil = new File(dest + zipEntryName);
            //                 fil.getParent()
            //             }

            // file exists ? delete ?
            File file2 = new File(dest + zipEntryName);

            if (file2.exists()) {
                if (replaceIfExists) {

                    try {
                        boolean b = deleteDir(file2);
                        if (!b) {
                            Log.e("Haggle", "Unzip failed to delete " + dest + zipEntryName);
                        } else {
                            Log.d("Haggle", "Unzip deleted " + dest + zipEntryName);
                        }
                    } catch (Exception e) {
                        Log.e("Haggle", "Unzip failed to delete " + dest + zipEntryName, e);
                    }
                }
            }

            // extract
            File file = new File(dest + zipEntryName);

            if (file.exists()) {

            } else {
                if (zipEntry.isDirectory()) {
                    file.mkdirs();
                    chmod(file, 0755);

                } else {

                    // create parent file folder if not exists yet
                    if (!file.getParentFile().exists()) {
                        file.getParentFile().mkdirs();
                        chmod(file.getParentFile(), 0755);
                    }

                    byte buffer[] = new byte[BUFFER_SIZE];
                    bufferedOutputStream = new BufferedOutputStream(new FileOutputStream(file), BUFFER_SIZE);
                    int count;

                    while ((count = zipInputStream.read(buffer, 0, BUFFER_SIZE)) != -1) {
                        bufferedOutputStream.write(buffer, 0, count);
                    }

                    bufferedOutputStream.flush();
                    bufferedOutputStream.close();
                }
            }

            // enable standalone python
            if (file.getName().endsWith(".so") || file.getName().endsWith(".xml")
                    || file.getName().endsWith(".py") || file.getName().endsWith(".pyc")
                    || file.getName().endsWith(".pyo")) {
                chmod(file, 0755);
            }

            Log.d("Haggle", "Unzip extracted " + dest + zipEntryName);
        }

        zipInputStream.close();

    } catch (FileNotFoundException e) {
        Log.e("Haggle", "Unzip error, file not found", e);
        succeed = false;
    } catch (Exception e) {
        Log.e("Haggle", "Unzip error: ", e);
        succeed = false;
    }

    return succeed;
}