Example usage for java.io BufferedInputStream read

Introduction

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

Prototype

public synchronized int read(byte b[], int off, int len) throws IOException 

Source Link

Document

Reads bytes from this byte-input stream into the specified byte array, starting at the given offset.

Usage

From source file:com.chinamobile.bcbsp.fault.tools.Zip.java

/**
 * Uncompress *.zip files.//from w ww .  j  a  v  a 2s.  co m
 * @param fileName
 *        : file to be uncompress
 */
@SuppressWarnings("unchecked")
public static void decompress(String fileName) {
    File sourceFile = new File(fileName);
    String filePath = sourceFile.getParent() + "/";
    try {
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        ZipFile zipFile = new ZipFile(fileName);
        Enumeration en = zipFile.entries();
        byte[] data = new byte[BUFFER];
        while (en.hasMoreElements()) {
            ZipEntry entry = (ZipEntry) en.nextElement();
            if (entry.isDirectory()) {
                new File(filePath + entry.getName()).mkdirs();
                continue;
            }
            bis = new BufferedInputStream(zipFile.getInputStream(entry));
            File file = new File(filePath + entry.getName());
            File parent = file.getParentFile();
            if (parent != null && (!parent.exists())) {
                parent.mkdirs();
            }
            bos = new BufferedOutputStream(new FileOutputStream(file));
            int count;
            while ((count = bis.read(data, 0, BUFFER)) != -1) {
                bos.write(data, 0, count);
            }
            bis.close();
            bos.close();
        }
        zipFile.close();
    } catch (IOException e) {
        //LOG.error("[compress]", e);
        throw new RuntimeException("[compress]", e);
    }
}

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From source file:com.ibuildapp.romanblack.FanWallPlugin.data.Statics.java

/**
 * download file url and save it/*  w w  w .ja v  a 2 s. co m*/
 *
 * @param url
 */
public static String downloadFile(String url) {
    int BYTE_ARRAY_SIZE = 1024;
    int CONNECTION_TIMEOUT = 30000;
    int READ_TIMEOUT = 30000;

    // downloading cover image and saving it into file
    try {
        URL imageUrl = new URL(URLDecoder.decode(url));
        URLConnection conn = imageUrl.openConnection();
        conn.setConnectTimeout(CONNECTION_TIMEOUT);
        conn.setReadTimeout(READ_TIMEOUT);
        BufferedInputStream bis = new BufferedInputStream(conn.getInputStream());

        File resFile = new File(cachePath + File.separator + Utils.md5(url));
        if (!resFile.exists()) {
            resFile.createNewFile();
        }

        FileOutputStream fos = new FileOutputStream(resFile);
        int current = 0;
        byte[] buf = new byte[BYTE_ARRAY_SIZE];
        Arrays.fill(buf, (byte) 0);
        while ((current = bis.read(buf, 0, BYTE_ARRAY_SIZE)) != -1) {
            fos.write(buf, 0, current);
            Arrays.fill(buf, (byte) 0);
        }

        bis.close();
        fos.flush();
        fos.close();
        Log.d("", "");
        return resFile.getAbsolutePath();
    } catch (SocketTimeoutException e) {
        return null;
    } catch (IllegalArgumentException e) {
        return null;
    } catch (Exception e) {
        return null;
    }
}

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From source file:mpimp.assemblxweb.util.J5FileUtils.java

private static void zipDirectoryRecursively(String dirPath, BufferedInputStream origin, int BUFFER,
        ZipOutputStream out, byte[] data, String parentDirName) throws Exception {
    File directory = new File(dirPath);
    File content[] = directory.listFiles();

    for (int i = 0; i < content.length; i++) {
        if (content[i].isDirectory()) {
            String parentPath = parentDirName + File.separator + content[i].getName();
            zipDirectoryRecursively(content[i].getAbsolutePath(), origin, BUFFER, out, data, parentPath);
        } else {//from  ww w.  j a  v a  2  s  . c om
            String filePathInDirectory = parentDirName + File.separator + content[i].getName();
            FileInputStream in = new FileInputStream(content[i].getAbsolutePath());
            origin = new BufferedInputStream(in, BUFFER);
            ZipEntry zipEntry = new ZipEntry(filePathInDirectory);
            out.putNextEntry(zipEntry);
            int count;
            while ((count = origin.read(data, 0, BUFFER)) != -1) {
                out.write(data, 0, count);
            }
            origin.close();
            in.close();
        }
    }
}

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From source file:com.seajas.search.contender.scripting.XmlHtmlReader.java

/**
 * Returns the encoding declared in <?xml encoding=...?>, or NULL if none.
 * //from  w  w w.java2s .c o m
 * @param is
 * @param guessedEnc
 * @return String
 * @throws IOException
 */
private static String getXmlProlog(final BufferedInputStream is, final String guessedEnc) {
    try {
        String encoding = null;

        if (guessedEnc != null) {
            byte[] bytes = new byte[BUFFER_SIZE];
            is.mark(BUFFER_SIZE);
            int offset = 0;
            int max = BUFFER_SIZE;
            int c = is.read(bytes, offset, max);
            int firstGT = -1;
            while (c != -1 && firstGT == -1 && offset < BUFFER_SIZE) {
                offset += c;
                max -= c;
                try {
                    c = is.read(bytes, offset, max);
                } catch (IOException e) {
                    if (offset > 0)
                        is.reset();

                    throw e;
                }
                firstGT = new String(bytes, 0, offset).indexOf(">");
            }
            if (firstGT == -1) {
                if (offset > 0)
                    is.reset();
                if (c == -1) {
                    throw new IOException("Unexpected end of XML stream");
                } else {
                    throw new IOException("XML prolog or ROOT element not found on first " + offset + " bytes");
                }
            }
            int bytesRead = offset;
            if (bytesRead > 0) {
                is.reset();
                Reader reader = new InputStreamReader(new ByteArrayInputStream(bytes, 0, firstGT + 1),
                        guessedEnc);
                BufferedReader bReader = new BufferedReader(reader);
                StringBuffer prolog = new StringBuffer();
                String line = bReader.readLine();
                while (line != null) {
                    prolog.append(line);
                    line = bReader.readLine();
                }
                Matcher m = ENCODING_PATTERN.matcher(prolog);
                if (m.find()) {
                    encoding = m.group(1).toUpperCase();
                    encoding = encoding.substring(1, encoding.length() - 1);
                }
            }
        }
        return encoding;
    } catch (IOException e) {
        if (logger.isDebugEnabled())
            logger.debug("Could not retrieve the XML prolog from the given input: " + e.getMessage());

        return null;
    }
}

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From source file:com.thejustdo.util.Utils.java

/**
 * Creates a ZIP file containing all the files inside a directory.
 * @param location Directory to read.//from  w w w.  jav  a 2 s  .c o m
 * @param pathname Name and path where to store the file.
 * @throws FileNotFoundException If can't find the initial directory.
 * @throws IOException If can't read/write.
 */
public static void zipDirectory(File location, File pathname) throws FileNotFoundException, IOException {

    BufferedInputStream origin;
    FileOutputStream dest = new FileOutputStream(pathname);
    ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest));
    byte data[] = new byte[2048];

    // 1. Get a list of files from current directory
    String files[] = location.list();
    File f;

    // 2. Adding each file to the zip-set.
    for (String s : files) {
        log.info(String.format("Adding: %s", s));
        f = new File(location, s);
        FileInputStream fi = new FileInputStream(f);
        origin = new BufferedInputStream(fi, 2048);
        ZipEntry entry = new ZipEntry(location.getName() + File.separator + s);
        out.putNextEntry(entry);
        int count;
        while ((count = origin.read(data, 0, 2048)) != -1) {
            out.write(data, 0, count);
        }
        origin.close();
    }
    out.close();
}

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From source file:com.sun.socialsite.util.Utilities.java

/**
 * Utility method to copy an input stream to an output stream.
 * Wraps both streams in buffers. Ensures right numbers of bytes copied.
 */// w w w  . j  a v  a2  s  . co  m
public static void copyInputToOutput(InputStream input, OutputStream output, long byteCount)
        throws IOException {
    int bytes;
    long length;

    BufferedInputStream in = new BufferedInputStream(input);
    BufferedOutputStream out = new BufferedOutputStream(output);

    byte[] buffer;
    buffer = new byte[8192];

    for (length = byteCount; length > 0;) {
        bytes = (int) (length > 8192 ? 8192 : length);

        try {
            bytes = in.read(buffer, 0, bytes);
        } catch (IOException ex) {
            try {
                in.close();
                out.close();
            } catch (IOException ex1) {
            }
            throw new IOException("Reading input stream, " + ex.getMessage());
        }

        if (bytes < 0)
            break;

        length -= bytes;

        try {
            out.write(buffer, 0, bytes);
        } catch (IOException ex) {
            try {
                in.close();
                out.close();
            } catch (IOException ex1) {
            }
            throw new IOException("Writing output stream, " + ex.getMessage());
        }
    }

    try {
        in.close();
        out.close();
    } catch (IOException ex) {
        throw new IOException("Closing file streams, " + ex.getMessage());
    }
}

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From source file:com.sun.faces.generate.RenderKitSpecificationGenerator.java

public static void copyResourceToFile(String resourceName, File file) throws Exception {
    FileOutputStream fos = null;/*from   w w  w. j a va 2  s .co m*/
    BufferedInputStream bis = null;
    URL url = null;
    URLConnection conn = null;
    byte[] bytes = new byte[1024];
    int len = 0;

    fos = new FileOutputStream(file);
    url = getCurrentLoader(fos).getResource(resourceName);
    conn = url.openConnection();
    conn.setUseCaches(false);
    bis = new BufferedInputStream(conn.getInputStream());
    while (-1 != (len = bis.read(bytes, 0, 1024))) {
        fos.write(bytes, 0, len);
    }
    fos.close();
    bis.close();

}

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From source file:piramide.multimodal.downloader.client.RestClient.java

private String[] json2list(String url) throws DownloaderException {
    try {/*from   w w w.  j  a  va2 s .  c  om*/
        final HttpClient client = new DefaultHttpClient();
        final HttpResponse response = client.execute(new HttpGet(url));
        final InputStream is = response.getEntity().getContent();
        final int size = (int) response.getEntity().getContentLength();
        final byte[] buffer = new byte[size];
        final BufferedInputStream bis = new BufferedInputStream(is);
        int position = 0;
        while (position < size) {
            final int read = bis.read(buffer, position, buffer.length - position);
            if (read <= 0)
                break;
            position += read;
        }

        final String strResponse = new String(buffer);
        final JSONArray arr = new JSONArray(strResponse);
        final String[] returnValue = new String[arr.length()];

        for (int i = 0; i < arr.length(); ++i)
            returnValue[i] = arr.getString(i);

        return returnValue;
    } catch (ClientProtocolException e) {
        throw new DownloaderException(e.getMessage(), e);
    } catch (IllegalStateException e) {
        throw new DownloaderException(e.getMessage(), e);
    } catch (IOException e) {
        throw new DownloaderException(e.getMessage(), e);
    } catch (JSONException e) {
        throw new DownloaderException(e.getMessage(), e);
    }
}

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From source file:it.geosolutions.tools.compress.file.Extractor.java

public static void unZip(File inputZipFile, File outputDir) throws IOException, CompressorException {
    if (inputZipFile == null || outputDir == null) {
        throw new CompressorException("Unzip: with null parameters");
    }/*from w  w  w.j  ava 2  s .  com*/

    if (!outputDir.exists()) {
        if (!outputDir.mkdirs()) {
            throw new CompressorException("Unzip: Unable to create directory structure: " + outputDir);
        }
    }

    final int BUFFER = Conf.getBufferSize();

    ZipInputStream zipInputStream = null;
    try {
        // Open Zip file for reading
        zipInputStream = new ZipInputStream(new FileInputStream(inputZipFile));
    } catch (FileNotFoundException fnf) {
        throw new CompressorException("Unzip: Unable to find the input zip file named: " + inputZipFile);
    }

    // extract file if not a directory
    BufferedInputStream bis = new BufferedInputStream(zipInputStream);
    // grab a zip file entry
    ZipEntry entry = null;
    while ((entry = zipInputStream.getNextEntry()) != null) {
        // Process each entry

        File currentFile = new File(outputDir, entry.getName());

        FileOutputStream fos = null;
        BufferedOutputStream dest = null;
        try {
            int currentByte;
            // establish buffer for writing file
            byte data[] = new byte[BUFFER];

            // write the current file to disk
            fos = new FileOutputStream(currentFile);
            dest = new BufferedOutputStream(fos, BUFFER);

            // read and write until last byte is encountered
            while ((currentByte = bis.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, currentByte);
            }
        } catch (IOException ioe) {

        } finally {
            try {
                if (dest != null) {
                    dest.flush();
                    dest.close();
                }
                if (fos != null)
                    fos.close();
            } catch (IOException ioe) {
                throw new CompressorException(
                        "Unzip: unable to close the zipInputStream: " + ioe.getLocalizedMessage());
            }
        }
    }
    try {
        if (zipInputStream != null)
            zipInputStream.close();
    } catch (IOException ioe) {
        throw new CompressorException(
                "Unzip: unable to close the zipInputStream: " + ioe.getLocalizedMessage());
    }
    try {
        if (bis != null)
            bis.close();
    } catch (IOException ioe) {
        throw new CompressorException(
                "Unzip: unable to close the Buffered zipInputStream: " + ioe.getLocalizedMessage());
    }
}

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From source file:piramide.multimodal.client.tester.ApplicationDownloader.java

private void downloadFile(HttpResponse response, OutputStream os) throws IOException {
    final InputStream is = response.getEntity().getContent();
    long size = response.getEntity().getContentLength();
    BufferedInputStream bis = new BufferedInputStream(is);
    final byte[] buffer = new byte[1024 * 1024]; // 1 MB
    long position = 0;
    while (position < size) {
        final int read = bis.read(buffer, 0, buffer.length);
        if (read <= 0)
            break;

        os.write(buffer, 0, read);//from ww  w  .j  ava  2 s . c  o  m
        os.flush();

        position += read;
    }
    is.close();
}

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