Example usage for java.util.zip GZIPOutputStream GZIPOutputStream

Introduction

In this page you can find the example usage for java.util.zip GZIPOutputStream GZIPOutputStream.

Prototype

public GZIPOutputStream(OutputStream out) throws IOException

Source Link

Document

Creates a new output stream with a default buffer size.

Usage

From source file:edu.cornell.med.icb.goby.algorithmic.data.WeightsInfo.java

/**
 * Save weights info to disk.//from  w  w w. j a v  a2s  .co  m
 *
 * @param filename The name of the file to save to
 * @throws IOException If the file cannot be written
 */
public void save(final String filename) throws IOException {
    GZIPOutputStream gzipOutputStream = null;
    try {
        gzipOutputStream = new GZIPOutputStream(new FileOutputStream(filename));
        BinIO.storeObject(this, gzipOutputStream);
        gzipOutputStream.flush();
        LOG.info("Saved " + filename);
    } finally {
        IOUtils.closeQuietly(gzipOutputStream);
    }
}

From source file:com.github.k0zka.contentcompress.ContentGzipMojo.java

void compress(final File directory, final String fileName) throws IOException {
    final File sourceFile = new File(directory, fileName);
    final File gzippedFile = new File(directory, fileName.concat(".gz"));
    if (gzippedFile.exists() && gzippedFile.lastModified() > sourceFile.lastModified()) {
        getLog().info("Skipped file " + sourceFile.getName() + " .gz is up to date");
        return;// www. j  a v  a2s .c  o  m
    }
    final FileInputStream inputStream = new FileInputStream(sourceFile);
    final FileOutputStream fileStream = new FileOutputStream(gzippedFile);
    final GZIPOutputStream gzipStream = new GZIPOutputStream(fileStream);
    IOUtils.copy(inputStream, gzipStream);
    IOUtils.closeQuietly(inputStream);
    IOUtils.closeQuietly(gzipStream);
    IOUtils.closeQuietly(fileStream);
    final long sourceLength = sourceFile.length();
    final long gzipedLength = gzippedFile.length();
    if (sourceLength > gzipedLength) {
        getLog().info("Compressed file " + sourceFile.getName() + ". " + sourceLength + " -> " + gzipedLength);
    } else {
        getLog().info("Compressed file " + sourceFile.getName() + ". " + sourceLength + " -> " + gzipedLength
                + " removing, gzipped version is bigger");
        gzippedFile.delete();
    }
}

From source file:com.spstudio.common.image.ImageUtils.java

/**
 * byte[]//from  w w  w .j  a  va 2s .c  o m
 *
 * @param ??
 * @return ??
 */
public static byte[] compress(byte[] data) {
    System.out.println("before:" + data.length);

    GZIPOutputStream gzip = null;
    ByteArrayOutputStream baos = null;
    byte[] newData = null;

    try {
        baos = new ByteArrayOutputStream();
        gzip = new GZIPOutputStream(baos);

        gzip.write(data);
        gzip.finish();
        gzip.flush();

        newData = baos.toByteArray();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            gzip.close();
            baos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    System.out.println("after:" + newData.length);
    return newData;
}

From source file:org.calrissian.accumulorecipes.blobstore.impl.ext.ExtendedAccumuloBlobStoreTest.java

@Test
public void testSaveAndQueryComplex() throws Exception {
    ExtendedAccumuloBlobStore blobStore = new ExtendedAccumuloBlobStore(getConnector(), CHUNK_SIZE);

    Collection<String> testValues = new ArrayList<String>(10);
    for (int i = 0; i < CHUNK_SIZE; i++)
        testValues.add(randomUUID().toString());

    //Store json in a Gzipped format
    OutputStream storageStream = blobStore.store("test", "1", currentTimeMillis(), "");
    mapper.writeValue(new GZIPOutputStream(storageStream), testValues);

    //reassemble the json after unzipping the stream.
    InputStream retrievalStream = blobStore.get("test", "1", Auths.EMPTY);
    Collection<String> actualValues = mapper.readValue(new GZIPInputStream(retrievalStream), strColRef);

    //if there were no errors, then verify that the two collections are equal.
    assertThat(actualValues, is(equalTo(testValues)));
}

From source file:io.github.azige.whitespace.Cli.java

static void compile(InputStream input, String path) throws IOException {
    Interpreter interpreter = createInterpreter();
    Program program = interpreter.interpret(createReader(input));
    path = path.replaceFirst("\\.[^\\.]+$", WHITESPACE_BINARY_FILE_SUFFIX);
    try (ObjectOutputStream output = new ObjectOutputStream(
            new GZIPOutputStream(Files.newOutputStream(Paths.get(path))))) {
        output.writeObject(program);/*from  w w  w.  ja  va 2  s. c  o  m*/
    }
}

From source file:hr.fer.zemris.vhdllab.platform.remoting.HttpClientRequestExecutor.java

@Override
protected OutputStream decorateOutputStream(OutputStream os) throws IOException {
    return new GZIPOutputStream(os);
}

From source file:org.envirocar.app.network.HTTPClient.java

public static HttpEntity createEntity(byte[] data) throws IOException {
    AbstractHttpEntity entity;/*ww w . j  av  a2  s . co  m*/
    if (data.length < MIN_GZIP_SIZE) {
        entity = new ByteArrayEntity(data);
    } else {
        ByteArrayOutputStream arr = new ByteArrayOutputStream();
        OutputStream zipper = new GZIPOutputStream(arr);
        zipper.write(data);
        zipper.close();
        entity = new ByteArrayEntity(arr.toByteArray());
        entity.setContentEncoding("gzip");
    }
    return entity;
}

From source file:com.ery.ertc.estorm.util.GZIPUtils.java

public static final byte[] zip(byte[] in, int offset, int length) {
    try {/*from  w w  w .ja  va2s. c  o m*/
        // compress using GZIPOutputStream
        ByteArrayOutputStream byteOut = new ByteArrayOutputStream(length / EXPECTED_COMPRESSION_RATIO);

        GZIPOutputStream outStream = new GZIPOutputStream(byteOut);

        try {
            outStream.write(in, offset, length);
        } catch (Exception e) {
            LOG.error("Failed to get outStream.write input", e);
        }

        try {
            outStream.close();
        } catch (IOException e) {
            LOG.error("Failed to implement outStream.close", e);
        }

        return byteOut.toByteArray();

    } catch (IOException e) {
        LOG.error("Failed with IOException", e);
        return null;
    }
}

From source file:edu.umn.cs.spatialHadoop.visualization.FrequencyMap.java

@Override
public void write(DataOutput out) throws IOException {
    super.write(out);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GZIPOutputStream gzos = new GZIPOutputStream(baos);
    ByteBuffer bbuffer = ByteBuffer.allocate(getHeight() * 4 + 8);
    bbuffer.putInt(getWidth());// w w  w  .ja  va  2  s. c  om
    bbuffer.putInt(getHeight());
    gzos.write(bbuffer.array(), 0, bbuffer.position());
    for (int x = 0; x < getWidth(); x++) {
        bbuffer.clear();
        for (int y = 0; y < getHeight(); y++) {
            bbuffer.putFloat(frequencies[x][y]);
        }
        gzos.write(bbuffer.array(), 0, bbuffer.position());
    }
    gzos.close();

    byte[] serializedData = baos.toByteArray();
    out.writeInt(serializedData.length);
    out.write(serializedData);
}

From source file:de.zib.scalaris.examples.wikipedia.data.Revision.java

/**
 * Compresses the given text and returns it as a byte array.
 * //w  w  w .  j a va2 s . c  o  m
 * @param text
 *            the un-compressed text
 * 
 * @return the compressed text
 * 
 * @throws RuntimeException
 *             if compressing the text did not work
 */
protected static byte[] packText(String text) throws RuntimeException {
    try {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        GZIPOutputStream gos = new GZIPOutputStream(bos);
        gos.write(text.getBytes("UTF-8"));
        gos.flush();
        gos.close();
        return bos.toByteArray();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}