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

public static String readStr(InputStream in, String charset) throws IOException {
    if (TextUtils.isEmpty(charset))
        charset = "UTF-8";

    if (!(in instanceof BufferedInputStream)) {
        in = new BufferedInputStream(in);
    }// w w  w .  j a  v a  2 s.c om
    Reader reader = new InputStreamReader(in, charset);
    StringBuilder sb = new StringBuilder();
    char[] buf = new char[1024];
    int len;
    while ((len = reader.read(buf)) >= 0) {
        sb.append(buf, 0, len);
    }
    return sb.toString().trim();
}

From source file:Main.java

/**
 * Saves a file from the given URL to the given filename and returns the file
 * @param link URL to file/*from w w w  . j a v  a  2  s.c  o  m*/
 * @param fileName Name to save the file
 * @return The file
 * @throws IOException Thrown if any IOException occurs
 */
public static File saveFileFromNet(URL link, String fileName) throws IOException {
    InputStream in = new BufferedInputStream(link.openStream());
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] buf = new byte[1024];
    int n = 0;
    while (-1 != (n = in.read(buf))) {
        out.write(buf, 0, n);
    }
    out.close();
    in.close();
    byte[] response = out.toByteArray();

    File file = new File(fileName);
    if (!file.exists()) {
        if (file.getParentFile() != null) {
            file.getParentFile().mkdirs();
        }
        file.createNewFile();
    }
    FileOutputStream fos = new FileOutputStream(file);
    fos.write(response);
    fos.close();

    return new File(fileName);
}

From source file:Main.java

private static File saveFile(InputStream is, String destDir, String fileName) throws IOException {
    File dir = new File(destDir);
    fileName = getString(fileName);//from  w w  w  . j  a v  a 2  s.  c  o  m
    if (!dir.exists()) {
        dir.mkdirs();
    }
    BufferedInputStream bis = new BufferedInputStream(is);
    BufferedOutputStream bos = null;
    try {
        File saveFile = new File(destDir, fileName);
        bos = new BufferedOutputStream(new FileOutputStream(saveFile));
        int len = -1;
        while ((len = bis.read()) != -1) {
            bos.write(len);
            bos.flush();
        }
        bos.close();
        bis.close();
        return saveFile;
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static void fastBufferFileCopy(File source, File target) {
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    long start = System.currentTimeMillis();
    FileInputStream fis = null;/*from   www. jav a  2s .c  o m*/
    FileOutputStream fos = null;
    long size = source.length();
    try {
        fis = new FileInputStream(source);
        bis = new BufferedInputStream(fis);
        fos = new FileOutputStream(target);
        bos = new BufferedOutputStream(fos);

        byte[] barr = new byte[Math.min((int) size, 1 << 20)];
        int read = 0;
        while ((read = bis.read(barr)) != -1) {
            bos.write(barr, 0, read);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        close(fis);
        close(fos);
        close(bis);
        close(bos);
    }
    long end = System.currentTimeMillis();

    String srcPath = source.getAbsolutePath();
    Log.d("Copied " + srcPath + " to " + target,
            ", took " + (end - start) / 1000 + " ms, total size " + nf.format(size) + " Bytes, speed "
                    + ((end - start > 0) ? nf.format(size / (end - start)) : 0) + "KB/s");
}

From source file:Main.java

/**
 * Determine whether a file is a ZIP File.
 *//*from   w  w w.  j a  v a  2  s.  c  om*/
public static boolean isZipFile(File file) throws IOException {
    if (file.isDirectory()) {
        return false;
    }
    if (!file.canRead()) {
        throw new IOException("Cannot read file " + file.getAbsolutePath());
    }
    if (file.length() < 4) {
        return false;
    }
    DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(file)));
    int test = in.readInt();
    in.close();
    return test == 0x504b0304;
}

From source file:Main.java

public static String getJsonCurrencyObject(String myurl) {
    StringBuilder strBuilder = new StringBuilder();

    try {/*from   w w w.  ja  v  a 2 s  .  c om*/
        URL url = new URL(myurl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        InputStream inputStream = new BufferedInputStream(connection.getInputStream());

        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        String line;
        while ((line = reader.readLine()) != null) {
            strBuilder.append(line);
        }
        inputStream.close();

    } catch (MalformedURLException ex) {
        Log.d("HttpURLConnection", "getJsonCurrencyObject: " + ex.getMessage());
    }

    catch (IOException e) {
        Log.d("readJSONFeed", e.getLocalizedMessage());
        e.printStackTrace();
    } catch (Exception ex) {
        Log.d("GeneralException", ex.getMessage());
    }

    return strBuilder.toString();
}

From source file:Main.java

public static boolean downloadFile(File file, URL url) throws IOException {
    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    HttpURLConnection conn = null;
    try {/*from ww  w . j a  va2s.c  o m*/
        conn = (HttpURLConnection) url.openConnection();
        bis = new BufferedInputStream(conn.getInputStream());
        bos = new BufferedOutputStream(new FileOutputStream(file));

        int contentLength = conn.getContentLength();

        byte[] buffer = new byte[BUFFER_SIZE];
        int read = 0;
        int count = 0;
        while ((read = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, read);
            count += read;
        }
        if (count < contentLength)
            return false;
        int responseCode = conn.getResponseCode();
        if (responseCode / 100 != 2) {
            // error
            return false;
        }
        // finished
        return true;
    } finally {
        try {
            bis.close();
            bos.close();
            conn.disconnect();
        } catch (Exception e) {
        }
    }
}

From source file:Main.java

/**
 * Makes a GET call to the server./*  w w w  .  j  a va  2s  .c  o  m*/
 * @return The serve response (expected is JSON)
 */
public static String httpGet(String urlStr) {
    try {
        URL url = new URL(urlStr);

        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
        String r = readStream(in);
        urlConnection.disconnect();
        return r;
    } catch (MalformedURLException e) {
        Log.v("MyLog", "GET: Bad URL");
        e.printStackTrace();
        return "GET: Bad URL";
    } catch (IOException e) {
        Log.v("MyLog", "GET: Bad Con");
        e.printStackTrace();
        return "GET: Bad Con [" + urlStr + "]";
    }
}

From source file:Main.java

public static byte[] readZipEntry(File zfile, ZipEntry entry) throws ZipException, IOException {
    Log.d("file3: ", zfile.toString());
    Log.d("zipEntry3: ", entry.toString());
    ZipFile zipFile = new ZipFile(zfile);
    if (entry != null && !entry.isDirectory()) {
        byte[] barr = new byte[(int) entry.getSize()];
        int read = 0;
        int len = 0;
        InputStream is = zipFile.getInputStream(entry);
        BufferedInputStream bis = new BufferedInputStream(is);
        int length = barr.length;
        while ((len = bis.read(barr, read, length - read)) != -1) {
            read += len;/*w  ww.j  a v  a  2 s .c o m*/
        }
        bis.close();
        is.close();
        zipFile.close();
        return barr;
    } else {
        zipFile.close();
        return new byte[0];
    }
}

From source file:Main.java

public static Bitmap revitionImageSize(String path, int width, int height) throws IOException {
    BufferedInputStream in = new BufferedInputStream(new FileInputStream(new File(path)));
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;//  w w w .  ja v a 2 s.co  m
    BitmapFactory.decodeStream(in, null, options);
    in.close();
    int i = 0;
    Bitmap bitmap = null;
    while (true) {
        if ((options.outWidth >> i <= width) && (options.outHeight >> i <= height)) {
            in = new BufferedInputStream(new FileInputStream(new File(path)));
            options.inSampleSize = (int) Math.pow(2.0D, i);
            options.inJustDecodeBounds = false;
            bitmap = BitmapFactory.decodeStream(in, null, options);
            break;
        }
        i += 1;
    }
    return bitmap;
}