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

Example 76 with Inflater

use of java.util.zip.Inflater in project j2objc by google.

the class InflaterTest method testInflaterCounts.

public void testInflaterCounts() throws Exception {
    Inflater inflater = new Inflater();
    byte[] decompressed = new byte[32];
    byte[] compressed = deflate(new byte[] { 1, 2, 3 }, null);
    assertEquals(11, compressed.length);
    // Feed in bytes [0, 5) to the first iteration.
    inflater.setInput(compressed, 0, 5);
    inflater.inflate(decompressed, 0, decompressed.length);
    assertEquals(5, inflater.getBytesRead());
    assertEquals(5, inflater.getTotalIn());
    assertEquals(2, inflater.getBytesWritten());
    assertEquals(2, inflater.getTotalOut());
    // Feed in bytes [5, 11) to the second iteration.
    assertEquals(true, inflater.needsInput());
    inflater.setInput(compressed, 5, 6);
    assertEquals(1, inflater.inflate(decompressed, 0, decompressed.length));
    assertEquals(11, inflater.getBytesRead());
    assertEquals(11, inflater.getTotalIn());
    assertEquals(3, inflater.getBytesWritten());
    assertEquals(3, inflater.getTotalOut());
    inflater.reset();
    assertEquals(0, inflater.getBytesRead());
    assertEquals(0, inflater.getTotalIn());
    assertEquals(0, inflater.getBytesWritten());
    assertEquals(0, inflater.getTotalOut());
}

Example 77 with Inflater

use of java.util.zip.Inflater in project j2objc by google.

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 78 with Inflater

use of java.util.zip.Inflater in project j2objc by google.

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 79 with Inflater

use of java.util.zip.Inflater in project dex2jar by pxb1988.

the class ZipFile method getInputStream.

/**
     * Returns an input stream on the data of the specified {@code android.ZipEntry}.
     * 
     * @param entry
     *            the android.ZipEntry.
     * @return an input stream of the data contained in the {@code android.ZipEntry}.
     * @throws java.io.IOException
     *             if an {@code IOException} occurs.
     * @throws IllegalStateException
     *             if this zip file has been closed.
     */
public InputStream getInputStream(ZipEntry entry) throws IOException {
    long entryDataStart = getEntryDataStart(entry);
    ByteBuffer is = (ByteBuffer) raf.duplicate().position((int) entryDataStart);
    if (entry.compressionMethod == ZipEntry.STORED) {
        final ByteBuffer buf = (ByteBuffer) is.slice().order(ByteOrder.LITTLE_ENDIAN).limit((int) entry.size);
        return new ByteBufferBackedInputStream(buf);
    } else {
        final ByteBuffer buf = (ByteBuffer) is.slice().order(ByteOrder.LITTLE_ENDIAN).limit((int) entry.compressedSize);
        int bufSize = Math.max(1024, (int) Math.min(entry.getSize(), 65535L));
        return new ZipInflaterInputStream(new ByteBufferBackedInputStream(buf), new Inflater(true), bufSize, entry);
    }
}

Example 80 with Inflater

use of java.util.zip.Inflater in project cordova-android-chromeview by thedracle.

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));
}