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

Example 16 with Inflater

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

the class SpdyReader method newNameValueBlockStream.

private DataInputStream newNameValueBlockStream() {
    // Limit the inflater input stream to only those bytes in the Name/Value block.
    final InputStream throttleStream = new InputStream() {

        @Override
        public int read() throws IOException {
            return Util.readSingleByte(this);
        }

        @Override
        public int read(byte[] buffer, int offset, int byteCount) throws IOException {
            byteCount = Math.min(byteCount, compressedLimit);
            int consumed = in.read(buffer, offset, byteCount);
            compressedLimit -= consumed;
            return consumed;
        }

        @Override
        public void close() throws IOException {
            in.close();
        }
    };
    // Subclass inflater to install a dictionary when it's needed.
    Inflater inflater = new Inflater() {

        @Override
        public int inflate(byte[] buffer, int offset, int count) throws DataFormatException {
            int result = super.inflate(buffer, offset, count);
            if (result == 0 && needsDictionary()) {
                setDictionary(DICTIONARY);
                result = super.inflate(buffer, offset, count);
            }
            return result;
        }
    };
    return new DataInputStream(new InflaterInputStream(throttleStream, inflater));
}

Example 17 with Inflater

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

the class FilterInputStreamNullSourceTest method testInflaterInputStream.

public void testInflaterInputStream() throws IOException {
    try {
        new InflaterInputStream(null);
        fail();
    } catch (NullPointerException expected) {
    }
    try {
        new InflaterInputStream(null, new Inflater());
        fail();
    } catch (NullPointerException expected) {
    }
    try {
        new InflaterInputStream(null, new Inflater(), 1024);
        fail();
    } catch (NullPointerException expected) {
    }
}

Example 18 with Inflater

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

the class DeflaterTest method testDeflate.

public void testDeflate() throws DataFormatException {
    deflater.setInput(new byte[] { 1, 2, 3 });
    deflateInflate(Deflater.NO_FLUSH);
    assertTrue(totalInflated < 3);
    // the 3rd byte shouldn't have been flushed yet
    assertEquals(0, decompressed[2]);
    deflater.setInput(new byte[] { 4, 5, 6 });
    deflateInflate(Deflater.SYNC_FLUSH);
    assertEquals(6, totalInflated);
    assertDecompressed(1, 2, 3, 4, 5, 6);
    assertEquals(0, inflater.inflate(decompressed));
    deflater.setInput(new byte[] { 7, 8, 9 });
    deflateInflate(Deflater.FULL_FLUSH);
    assertEquals(9, totalInflated);
    assertDecompressed(1, 2, 3, 4, 5, 6, 7, 8, 9);
    assertEquals(0, inflater.inflate(decompressed));
    // safe because we did a FULL_FLUSH
    inflater = new Inflater(true);
    deflater.setInput(new byte[] { 10, 11, 12 });
    deflateInflate(Deflater.SYNC_FLUSH);
    assertEquals(12, totalInflated);
    assertDecompressed(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12);
    assertEquals(0, inflater.inflate(decompressed));
}

Example 19 with Inflater

use of java.util.zip.Inflater 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 20 with Inflater

use of java.util.zip.Inflater 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();
}