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

Example 26 with Deflater

use of java.util.zip.Deflater in project robovm by robovm.

the class OldAndroidDeflateTest method bigTest.

/*
     * "step" determines how compressible the data is.
     *
     * Note we must set "nowrap" to false, or the Adler-32 doesn't get
     * computed.
     */
private void bigTest(int step, int expectedAdler) throws UnsupportedEncodingException, DataFormatException {
    byte[] input = new byte[128 * 1024];
    byte[] comp = new byte[128 * 1024 + 512];
    byte[] output = new byte[128 * 1024 + 512];
    Inflater inflater = new Inflater(false);
    Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION, false);
    createSample(input, step);
    compress(deflater, input, comp);
    expand(inflater, comp, (int) deflater.getBytesWritten(), output);
    assertEquals(inflater.getBytesWritten(), input.length);
    assertEquals(deflater.getAdler(), inflater.getAdler());
    assertEquals(deflater.getAdler(), expectedAdler);
}

Example 27 with Deflater

use of java.util.zip.Deflater in project robovm by robovm.

the class OldAndroidDeflateTest method simpleTest.

/*
     * Simple inflate/deflate test, taken from the reference docs for the
     * Inflater/Deflater classes.
     */
private void simpleTest() throws UnsupportedEncodingException, DataFormatException {
    // Encode a String into bytes
    String inputString = "blahblahblah??";
    byte[] input = inputString.getBytes("UTF-8");
    // Compress the bytes
    byte[] output = new byte[100];
    Deflater compresser = new Deflater();
    compresser.setInput(input);
    compresser.finish();
    int compressedDataLength = compresser.deflate(output);
    // Decompress the bytes
    Inflater decompresser = new Inflater();
    decompresser.setInput(output, 0, compressedDataLength);
    byte[] result = new byte[100];
    int resultLength = decompresser.inflate(result);
    // Decode the bytes into a String
    String outputString = new String(result, 0, resultLength, "UTF-8");
    assertEquals(inputString, outputString);
    assertEquals(compresser.getAdler(), decompresser.getAdler());
    decompresser.end();
}

Example 28 with Deflater

use of java.util.zip.Deflater in project trex-stateless-gui by cisco-system-traffic-generator.

the class CompressionUtils method compress.

public static byte[] compress(byte[] data) throws IOException {
    Deflater deflater = new Deflater();
    deflater.setInput(data);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(data.length);
    deflater.finish();
    byte[] buffer = new byte[1024];
    while (!deflater.finished()) {
        int count = deflater.deflate(buffer);
        outputStream.write(buffer, 0, count);
    }
    outputStream.close();
    byte[] output = outputStream.toByteArray();
    return output;
}

Example 29 with Deflater

use of java.util.zip.Deflater in project ddf by codice.

the class RestSecurity method deflateAndBase64Encode.

/**
     * Deflates a value and Base64 encodes the result.
     *
     * @param value value to deflate and Base64 encode
     * @return String
     * @throws IOException if the value cannot be converted
     */
public static String deflateAndBase64Encode(String value) throws IOException {
    ByteArrayOutputStream valueBytes = new ByteArrayOutputStream();
    try (OutputStream tokenStream = new DeflaterOutputStream(valueBytes, new Deflater(Deflater.DEFLATED, GZIP_COMPATIBLE))) {
        tokenStream.write(value.getBytes(StandardCharsets.UTF_8));
        tokenStream.close();
        return Base64.getEncoder().encodeToString(valueBytes.toByteArray());
    }
}

Example 30 with Deflater

use of java.util.zip.Deflater in project geode by apache.

the class CliUtil method compressBytes.

public static DeflaterInflaterData compressBytes(byte[] input) {
    Deflater compresser = new Deflater();
    compresser.setInput(input);
    compresser.finish();
    byte[] buffer = new byte[100];
    byte[] result = new byte[0];
    int compressedDataLength = 0;
    int totalCompressedDataLength = 0;
    do {
        byte[] newResult = new byte[result.length + buffer.length];
        System.arraycopy(result, 0, newResult, 0, result.length);
        compressedDataLength = compresser.deflate(buffer);
        totalCompressedDataLength += compressedDataLength;
        System.arraycopy(buffer, 0, newResult, result.length, buffer.length);
        result = newResult;
    } while (compressedDataLength != 0);
    return new DeflaterInflaterData(totalCompressedDataLength, result);
}