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

Example 56 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;
}

Example 57 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project android_frameworks_base by DirtyUnicorns.

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 58 with DeflaterOutputStream

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

the class ZipDataFormat method marshal.

public void marshal(final Exchange exchange, final Object graph, final OutputStream stream) throws Exception {
    // ask for a mandatory type conversion to avoid a possible NPE beforehand as we do copy from the InputStream
    final InputStream is = exchange.getContext().getTypeConverter().mandatoryConvertTo(InputStream.class, exchange, graph);
    final Deflater deflater = new Deflater(compressionLevel);
    final DeflaterOutputStream zipOutput = new DeflaterOutputStream(stream, deflater);
    try {
        IOHelper.copy(is, zipOutput);
    } finally {
        IOHelper.close(is, zipOutput);
        /*
            * As we create the Deflater our self and do not use the stream default
            * (see {@link java.util.zip.DeflaterOutputStream#usesDefaultDeflater})
            * we need to close the Deflater to not risk a OutOfMemoryException
            * in native code parts (see {@link java.util.zip.Deflater#end})
            */
        deflater.end();
    }
}

Example 59 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project teaTime by ancfdy.

the class AppZLibMgr method compress.

/**
     * 压缩
     *
     * @param data
     *            待压
     *缩数据
     * @param os
     *            输出流
     */
public static void compress(byte[] data, OutputStream os) {
    DeflaterOutputStream dos = new DeflaterOutputStream(os);
    try {
        dos.write(data, 0, data.length);
        dos.finish();
        dos.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

Example 60 with DeflaterOutputStream

use of java.util.zip.DeflaterOutputStream in project voltdb by VoltDB.

the class Encoder method compressAndBase64Encode.

public static String compressAndBase64Encode(String string) {
    try {
        byte[] inBytes = string.getBytes(Constants.UTF8ENCODING);
        ByteArrayOutputStream baos = new ByteArrayOutputStream((int) (string.length() * 0.7));
        DeflaterOutputStream dos = new DeflaterOutputStream(baos);
        dos.write(inBytes);
        dos.close();
        byte[] outBytes = baos.toByteArray();
        return Base64.encodeToString(outBytes, false);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}