Examples with Adler32 java.util.zip.Adler32 used on opensource projects

Example 26 with Adler32

use of java.util.zip.Adler32 in project bigbluebutton by bigbluebutton.

the class BlockStreamProtocolEncoder method encodeChecksum.

public static byte[] encodeChecksum(byte[] data) {
    Adler32 checksum = new Adler32();
    checksum.reset();
    checksum.update(data);
    return longToBytes(checksum.getValue());
}

Example 27 with Adler32

use of java.util.zip.Adler32 in project hawtjournal by fusesource.

the class Journal method recoveryCheck.

private Location recoveryCheck() throws IOException {
    Location location = goToFirstLocation(dataFiles.firstEntry().getValue(), Location.BATCH_CONTROL_RECORD_TYPE, false);
    while (true) {
        ByteBuffer buffer = accessor.readLocation(location).toByteBuffer();
        for (int i = 0; i < BATCH_CONTROL_RECORD_MAGIC.length; i++) {
            if (buffer.get() != BATCH_CONTROL_RECORD_MAGIC[i]) {
                throw new IOException("Bad control record magic for location: " + location);
            }
        }
        if (isChecksum()) {
            long expectedChecksum = buffer.getLong();
            byte[] data = new byte[buffer.remaining()];
            Checksum checksum = new Adler32();
            buffer.get(data);
            checksum.update(data, 0, data.length);
            if (expectedChecksum != checksum.getValue()) {
                throw new IOException("Bad checksum for location: " + location);
            }
        }
        Location next = goToNextLocation(location, Location.BATCH_CONTROL_RECORD_TYPE, true);
        if (next != null) {
            location = next;
        } else {
            break;
        }
    }
    return location;
}

Example 28 with Adler32

use of java.util.zip.Adler32 in project buck by facebook.

the class DexFile method calcChecksum.

/**
     * Calculates the checksum for the {@code .dex} file in the
     * given array, and modify the array to contain it.
     *
     * @param bytes {@code non-null;} the bytes of the file
     */
private static void calcChecksum(byte[] bytes) {
    Adler32 a32 = new Adler32();
    a32.update(bytes, 12, bytes.length - 12);
    int sum = (int) a32.getValue();
    bytes[8] = (byte) sum;
    bytes[9] = (byte) (sum >> 8);
    bytes[10] = (byte) (sum >> 16);
    bytes[11] = (byte) (sum >> 24);
}

Example 29 with Adler32

use of java.util.zip.Adler32 in project j2objc by google.

the class InflaterTest method adler32.

private static int adler32(byte[] bytes) {
    Adler32 adler32 = new Adler32();
    adler32.update(bytes);
    return (int) adler32.getValue();
}

Example 30 with Adler32

use of java.util.zip.Adler32 in project pinot by linkedin.

the class CrcUtils method computeCrc.

public long computeCrc() {
    CheckedInputStream cis = null;
    InputStream is = null;
    final Checksum checksum = new Adler32();
    final byte[] tempBuf = new byte[BUFFER_SIZE];
    for (final File file : filesToProcess) {
        try {
            is = new BufferedInputStream(new FileInputStream(file));
            cis = new CheckedInputStream(is, checksum);
            while (cis.read(tempBuf) >= 0) {
            }
            cis.close();
            is.close();
        } catch (final Exception e) {
            LOGGER.error("Caught exception while computing CRC", e);
            Utils.rethrowException(e);
            throw new AssertionError("Should not reach this");
        }
    }
    return checksum.getValue();
}