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

Example 11 with Adler32

use of java.util.zip.Adler32 in project tinker by Tencent.

the class Dex method computeChecksum.

/**
     * Returns the checksum of all but the first 12 bytes of {@code dex}.
     */
public int computeChecksum() throws IOException {
    Adler32 adler32 = new Adler32();
    byte[] buffer = new byte[8192];
    // positioned ByteBuffers aren't thread safe
    ByteBuffer data = this.data.duplicate();
    data.limit(data.capacity());
    data.position(CHECKSUM_OFFSET + SizeOf.CHECKSUM);
    while (data.hasRemaining()) {
        int count = Math.min(buffer.length, data.remaining());
        data.get(buffer, 0, count);
        adler32.update(buffer, 0, count);
    }
    return (int) adler32.getValue();
}

Example 12 with Adler32

use of java.util.zip.Adler32 in project atlas by alibaba.

the class Dex method computeChecksum.

/**
     * Returns the checksum of all but the first 12 bytes of {@code dex}.
     */
public int computeChecksum() throws IOException {
    Adler32 adler32 = new Adler32();
    byte[] buffer = new byte[8192];
    // positioned ByteBuffers aren't thread safe
    ByteBuffer data = this.data.duplicate();
    data.limit(data.capacity());
    data.position(CHECKSUM_OFFSET + CHECKSUM_SIZE);
    while (data.hasRemaining()) {
        int count = Math.min(buffer.length, data.remaining());
        data.get(buffer, 0, count);
        adler32.update(buffer, 0, count);
    }
    return (int) adler32.getValue();
}

Example 13 with Adler32

use of java.util.zip.Adler32 in project atlas by alibaba.

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 14 with Adler32

use of java.util.zip.Adler32 in project atlas by alibaba.

the class Dex method computeChecksum.

/**
     * Returns the checksum of all but the first 12 bytes of {@code dex}.
     */
public int computeChecksum() throws IOException {
    Adler32 adler32 = new Adler32();
    byte[] buffer = new byte[8192];
    // positioned ByteBuffers aren't thread safe
    ByteBuffer data = this.data.duplicate();
    data.limit(data.capacity());
    data.position(CHECKSUM_OFFSET + SizeOf.CHECKSUM);
    while (data.hasRemaining()) {
        int count = Math.min(buffer.length, data.remaining());
        data.get(buffer, 0, count);
        adler32.update(buffer, 0, count);
    }
    return (int) adler32.getValue();
}

Example 15 with Adler32

use of java.util.zip.Adler32 in project voltdb by VoltDB.

the class FileSnap method serialize.

/**
     * serialize the datatree and session into the file snapshot
     * @param dt the datatree to be serialized
     * @param sessions the sessions to be serialized
     * @param snapShot the file to store snapshot into
     */
@Override
public synchronized void serialize(DataTree dt, Map<Long, Long> sessions, File snapShot) throws IOException {
    if (!close) {
        OutputStream sessOS = new BufferedOutputStream(new FileOutputStream(snapShot));
        CheckedOutputStream crcOut = new CheckedOutputStream(sessOS, new Adler32());
        //CheckedOutputStream cout = new CheckedOutputStream()
        OutputArchive oa = BinaryOutputArchive.getArchive(crcOut);
        FileHeader header = new FileHeader(SNAP_MAGIC, VERSION, dbId);
        serialize(dt, sessions, oa, header);
        long val = crcOut.getChecksum().getValue();
        oa.writeLong(val, "val");
        oa.writeString("/", "path");
        sessOS.flush();
        crcOut.close();
        sessOS.close();
    }
}