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:cc.twittertools.corpus.data.TarJsonStatusCorpusReader.java

public TarJsonStatusCorpusReader(File file) throws IOException {
    Preconditions.checkNotNull(file);//  w  ww .ja v a 2 s.c  o m

    if (!file.isFile()) {
        throw new IOException("Expecting " + file + " to be a file!");
    }

    tarInput = new TarArchiveInputStream(new BufferedInputStream(new FileInputStream(file)));
}

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From source file:cn.edu.zju.acm.onlinejudge.util.ProblemManager.java

public static ProblemPackage importProblem(InputStream in, ActionMessages messages) {

    Map<String, byte[]> files = new HashMap<String, byte[]>();
    ZipInputStream zis = null;/* w  ww  .j  av a 2 s. c o  m*/
    try {

        zis = new ZipInputStream(new BufferedInputStream(in));
        // zis = new ZipInputStream(new BufferedInputStream(new FileInputStream("d:/100.zip")));
        ZipEntry entry = zis.getNextEntry();
        while (entry != null) {
            if (!entry.isDirectory()) {

                // TODO the file may be too big. > 100M
                /*
                 * byte data[] = new byte[(int) entry.getSize()]; int l = 0; while (l < data.length) { int ll =
                 * zis.read(data, l, data.length - l); if (ll < 0) { break; } l += ll; }
                 */
                ByteArrayOutputStream buf = new ByteArrayOutputStream();
                CopyUtils.copy(zis, buf);
                files.put(entry.getName(), buf.toByteArray());

            }
            entry = zis.getNextEntry();
        }

    } catch (IOException ioe) {
        messages.add("error", new ActionMessage("onlinejudge.importProblem.invalidzip"));
        return null;
    } finally {
        try {
            if (zis != null) {
                zis.close();
            }
        } catch (IOException e) {
            // ignore
        }
    }
    /*
     * files.clear(); files.put("problems.csv", "3,a\n2,b,true,1,2,3,4,a,b,c\n1,c".getBytes());
     * files.put("1\\checker", "checker".getBytes()); files.put("1\\input", "input".getBytes());
     * files.put("1\\output", "output".getBytes()); files.put("3\\checker", "checker3".getBytes());
     * files.put("3\\input", "input3".getBytes()); files.put("3\\output", "output3".getBytes());
     * files.put("images\\1.jpg", "1".getBytes()); files.put("images\\2\\2.jpg", "2".getBytes());
     */
    if (!files.containsKey(ProblemManager.PROBLEM_CSV_FILE)) {
        messages.add("error", new ActionMessage("onlinejudge.importProblem.missingproblemscsv"));
        return null;
    }
    ProblemPackage problemPackage = ProblemManager.parse(files, messages);
    if (messages.size() > 0) {
        return null;
    }
    return problemPackage;
}

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From source file:com.roche.iceboar.cachestorage.LocalCacheStorage.java

public CacheStatus loadCacheStatus(String cachePath) {
    InputStream file = null;//from  w  ww. j  a  va 2  s . c  o  m
    InputStream buffer = null;
    ObjectInput input = null;
    try {
        file = new FileInputStream(cachePath);
        buffer = new BufferedInputStream(file);
        input = new ObjectInputStream(buffer);

        CacheStatus cacheStatus = (CacheStatus) input.readObject();
        return cacheStatus;
    } catch (Exception e) {
        System.out.println("Can't open file with cache settings. Expected file here: " + cachePath);
    } finally {
        if (input != null) {
            try {
                input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (buffer != null) {
            try {
                buffer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (file != null) {
            try {
                file.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return new CacheStatus();
}

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From source file:CharsetDetector.java

private Charset detectCharset(File f, Charset charset) {
    try {// ww w.  j a v a2s .c o  m
        BufferedInputStream input = new BufferedInputStream(new FileInputStream(f));

        CharsetDecoder decoder = charset.newDecoder();
        decoder.reset();

        byte[] buffer = new byte[512];
        boolean identified = false;
        while ((input.read(buffer) != -1) && (!identified)) {
            identified = identify(buffer, decoder);
        }

        input.close();

        if (identified) {
            return charset;
        } else {
            return null;
        }

    } catch (Exception e) {
        return null;
    }
}

---

From source file:cn.guoyukun.spring.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String filePath,
        String displayName) throws IOException {
    File file = new File(filePath);

    if (StringUtils.isEmpty(displayName)) {
        displayName = file.getName();//from   www .j  av  a 2s.  c  o m
    }

    if (!file.exists() || !file.canRead()) {
        response.setContentType("text/html;charset=utf-8");
        response.getWriter().write("??");
        return;
    }

    String userAgent = request.getHeader("User-Agent");
    boolean isIE = (userAgent != null) && (userAgent.toLowerCase().indexOf("msie") != -1);

    response.reset();
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "must-revalidate, no-transform");
    response.setDateHeader("Expires", 0L);

    response.setContentType("application/x-download");
    response.setContentLength((int) file.length());

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    if (isIE) {
        displayFilename = URLEncoder.encode(displayFilename, "UTF-8");
        response.setHeader("Content-Disposition", "attachment;filename=\"" + displayFilename + "\"");
    } else {
        displayFilename = new String(displayFilename.getBytes("UTF-8"), "ISO8859-1");
        response.setHeader("Content-Disposition", "attachment;filename=" + displayFilename);
    }
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(new FileInputStream(file));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

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From source file:c3.ops.priam.compress.SnappyCompression.java

private void decompress(InputStream input, OutputStream output) throws IOException {
    SnappyInputStream is = new SnappyInputStream(new BufferedInputStream(input));
    byte data[] = new byte[BUFFER];
    BufferedOutputStream dest1 = new BufferedOutputStream(output, BUFFER);
    try {//  w ww. j a  v a  2  s  .c  o m
        int c;
        while ((c = is.read(data, 0, BUFFER)) != -1) {
            dest1.write(data, 0, c);
        }
    } finally {
        IOUtils.closeQuietly(dest1);
        IOUtils.closeQuietly(is);
    }
}

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From source file:ch.entwine.weblounge.common.impl.content.image.ImageMetadataUtils.java

/**
 * This utility method extracts image metadata stored in EXIF and IPTC tags
 * and returns the extracted information in a {@link ImageMetadata}.
 * //w w  w .j  av  a 2 s.  c om
 * @param img
 *          image file
 * @return extracted meta information
 */
public static ImageMetadata extractMetadata(File img) {
    BufferedInputStream is = null;
    try {
        is = new BufferedInputStream(new FileInputStream(img));
        return extractMetadata(is);
    } catch (FileNotFoundException e) {
        logger.warn("Tried to extract image metadata from none existing file '{}'", img.getName());
        return null;
    } finally {
        IOUtils.closeQuietly(is);
    }
}

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From source file:com.creditease.utilframe.http.client.entity.FileUploadEntity.java

@SuppressWarnings("resource")
@Override/*ww  w  .j av  a2  s  .com*/
public void writeTo(OutputStream outStream) throws IOException {
    if (outStream == null) {
        throw new IllegalArgumentException("Output stream may not be null");
    }
    BufferedInputStream inStream = null;
    try {
        inStream = new BufferedInputStream(new FileInputStream(this.file));
        byte[] tmp = new byte[4096];
        int len;
        while ((len = inStream.read(tmp)) != -1) {
            outStream.write(tmp, 0, len);
            uploadedSize += len;
            if (callBackHandler != null) {
                if (!callBackHandler.updateProgress(fileSize, uploadedSize, false)) {
                    IOUtils.closeQuietly(inStream);
                    throw new InterruptedIOException("cancel");
                }
            }
        }
        outStream.flush();
        if (callBackHandler != null) {
            callBackHandler.updateProgress(fileSize, uploadedSize, true);
        }
    } finally {
        IOUtils.closeQuietly(inStream);
    }
}

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From source file:com.progressiveaccess.cmlspeech.base.FileHandler.java

/**
 * Loads current file into the molecule IAtomContainer.
 *
 * @param fileName//from   www  .j  av a2  s .  c o  m
 *          File to load.
 *
 * @return The molecule loaded.
 *
 * @throws IOException
 *           Problems with loading file.
 * @throws CDKException
 *           Problems with input file format.
 */
public static IAtomContainer readFile(final String fileName) throws IOException, CDKException {
    final InputStream file = new BufferedInputStream(new FileInputStream(fileName));
    final ISimpleChemObjectReader reader = new ReaderFactory().createReader(file);
    IChemFile cmlFile = null;
    cmlFile = reader.read(SilentChemObjectBuilder.getInstance().newInstance(IChemFile.class));
    reader.close();
    final IAtomContainer molecule = ChemFileManipulator.getAllAtomContainers(cmlFile).get(0);
    Logger.logging(molecule);
    return molecule;
}

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From source file:com.cloudera.recordbreaker.analyzer.UnknownTextDataDescriptor.java

public static boolean isTextData(FileSystem fs, Path p) {
    try {// w w  w  .  j  ava2 s.co  m
        BufferedInputStream in = new BufferedInputStream(fs.open(p));
        try {
            byte buf[] = new byte[1024];
            int numBytes = in.read(buf);
            if (numBytes < 0) {
                return false;
            }
            int numASCIIChars = 0;
            for (int i = 0; i < numBytes; i++) {
                if (buf[i] >= 32 && buf[i] < 128) {
                    numASCIIChars++;
                }
            }
            return ((numASCIIChars / (1.0 * numBytes)) > asciiThreshold);
        } finally {
            in.close();
        }
    } catch (IOException iex) {
        return false;
    }
}

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