Examples with DeflaterOutputStream java.util.zip.DeflaterOutputStream used on opensource projects

Example 96 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project platform_frameworks_base by android.

the class BlobBackupHelper method deflate.

// Also versions the deflated blob internally in case we need to revise it
private byte[] deflate(byte[] data) {
    byte[] result = null;
    if (data != null) {
        try {
            ByteArrayOutputStream sink = new ByteArrayOutputStream();
            DataOutputStream headerOut = new DataOutputStream(sink);
            // write the header directly to the sink ahead of the deflated payload
            headerOut.writeInt(mCurrentBlobVersion);
            DeflaterOutputStream out = new DeflaterOutputStream(sink);
            out.write(data);
            // finishes and commits the compression run
            out.close();
            result = sink.toByteArray();
            if (DEBUG) {
                Log.v(TAG, "Deflated " + data.length + " bytes to " + result.length);
            }
        } catch (IOException e) {
            Log.w(TAG, "Unable to process payload: " + e.getMessage());
        }
    }
    return result;
}

Example 97 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project hadoop by apache.

the class CompressedWritable method write.

@Override
public final void write(DataOutput out) throws IOException {
    if (compressed == null) {
        ByteArrayOutputStream deflated = new ByteArrayOutputStream();
        Deflater deflater = new Deflater(Deflater.BEST_SPEED);
        DataOutputStream dout = new DataOutputStream(new DeflaterOutputStream(deflated, deflater));
        writeCompressed(dout);
        dout.close();
        deflater.end();
        compressed = deflated.toByteArray();
    }
    out.writeInt(compressed.length);
    out.write(compressed);
}

Example 98 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project intellij-community by JetBrains.

the class RefCountingStorage method zipAndWrite.

private void zipAndWrite(ByteSequence bytes, int record, boolean fixedSize) throws IOException {
    BufferExposingByteArrayOutputStream s = new BufferExposingByteArrayOutputStream();
    DeflaterOutputStream out = new DeflaterOutputStream(s);
    try {
        out.write(bytes.getBytes(), bytes.getOffset(), bytes.getLength());
    } finally {
        out.close();
    }
    synchronized (myLock) {
        doWrite(record, fixedSize, s);
        myPendingWriteRequestsSize -= bytes.getLength();
        myPendingWriteRequests.remove(record);
    }
}

Example 99 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project OpenAM by OpenRock.

the class IOUtilsTest method getObjectStreamBytes.

private byte[] getObjectStreamBytes(Object in, boolean compress) throws IOException {
    final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    final ObjectOutputStream objectOutputStream = compress ? new ObjectOutputStream(new DeflaterOutputStream(byteArrayOutputStream)) : new ObjectOutputStream(byteArrayOutputStream);
    objectOutputStream.writeObject(in);
    objectOutputStream.close();
    return byteArrayOutputStream.toByteArray();
}

Example 100 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project OpenAM by OpenRock.

the class SAML2Utils method encodeForRedirect.

/**
     * Returns the encoded request message.
     * The SAML Request message must be
     * encoded before being transmitted.
     * The Request message is encoded as follows:
     * 1. URL Encoded using the DEFLATE compression method.
     * 2. Then the message is base-64 encoded according to
     * the rules specified in RFC2045.
     *
     * @param str String to be encoded.
     * @return String the encoded String value or null on error.
     */
public static String encodeForRedirect(final String str) {
    String classMethod = "SAML2Utils.encodeForRedirect: ";
    byte[] input;
    try {
        input = str.getBytes("UTF-8");
    } catch (UnsupportedEncodingException uee) {
        debug.error(classMethod + "cannot get byte array: ", uee);
        return null;
    }
    Deflater deflater = new Deflater(Deflater.DEFAULT_COMPRESSION, true);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(out, deflater);
    try {
        deflaterOutputStream.write(input);
    } catch (IOException e) {
        debug.error(classMethod + "There was a problem compressing the input", e);
        return null;
    } finally {
        IOUtils.closeIfNotNull(deflaterOutputStream);
    }
    String encoded = URLEncDec.encode(Base64.encode(out.toByteArray()));
    if (debug.messageEnabled()) {
        debug.message(classMethod + "out string length : " + encoded.length());
        debug.message(classMethod + "out string is ===>" + encoded + "<===");
    }
    return encoded;
}