Examples with ByteArrayOutputStream com.codeforces.commons.io.ByteArrayOutputStream used on opensource projects

Example 6 with ByteArrayOutputStream

use of com.codeforces.commons.io.ByteArrayOutputStream in project codeforces-commons by Codeforces.

the class LzmaUtil method compress.

public static byte[] compress(byte[] plainBytes) throws IOException {
    InputStream in = new ByteArrayInputStream(plainBytes);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    Encoder encoder = new Encoder();
    encoder.setDictionarySize(1 << 23);
    encoder.setEndMarkerMode(true);
    encoder.setMatchFinder(Encoder.EMatchFinderTypeBT4);
    encoder.setNumFastBytes(0x20);
    encoder.writeCoderProperties(out);
    long fileSize = plainBytes.length;
    for (int i = 0; i < 8; ++i) {
        // noinspection NumericCastThatLosesPrecision
        out.write((int) (fileSize >>> (8 * i)) & 0xFF);
    }
    encoder.code(in, out, -1, -1, null);
    in.close();
    return out.toByteArray();
}

Example 7 with ByteArrayOutputStream

use of com.codeforces.commons.io.ByteArrayOutputStream in project codeforces-commons by Codeforces.

the class LzmaUtil method decompress.

public static byte[] decompress(byte[] compressedBytes) throws IOException {
    InputStream in = new ByteArrayInputStream(compressedBytes);
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    int propertiesSize = 5;
    byte[] properties = new byte[propertiesSize];
    if (in.read(properties, 0, propertiesSize) != propertiesSize) {
        throw new IOException("LZMA-input is too short.");
    }
    Decoder decoder = new Decoder();
    if (!decoder.setDecoderProperties(properties)) {
        throw new IOException("Incorrect stream properties.");
    }
    long outSize = 0;
    for (int i = 0; i < 8; i++) {
        int v = in.read();
        if (v < 0) {
            throw new IOException("Can't read stream size.");
        }
        // noinspection IntegerMultiplicationImplicitCastToLong
        outSize |= (long) v << (8 * i);
    }
    if (!decoder.code(in, out, outSize)) {
        throw new IOException("Error in data stream.");
    }
    in.close();
    return out.toByteArray();
}

Example 8 with ByteArrayOutputStream

use of com.codeforces.commons.io.ByteArrayOutputStream in project codeforces-commons by Codeforces.

the class ZipUtil method compress.

public static byte[] compress(byte[] bytes, int level) {
    Deflater deflater = new Deflater();
    deflater.setLevel(level);
    deflater.setInput(bytes);
    deflater.finish();
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(bytes.length);
    byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
    while (!deflater.finished()) {
        outputStream.write(buffer, 0, deflater.deflate(buffer));
    }
    return outputStream.toByteArray();
}

Example 9 with ByteArrayOutputStream

use of com.codeforces.commons.io.ByteArrayOutputStream in project codeforces-commons by Codeforces.

the class ZipUtil method decompress.

public static byte[] decompress(byte[] bytes) throws DataFormatException {
    if (bytes.length == 0) {
        return bytes;
    }
    Inflater inflater = new Inflater();
    inflater.setInput(bytes);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
    while (!inflater.finished()) {
        outputStream.write(buffer, 0, inflater.inflate(buffer));
    }
    inflater.end();
    return outputStream.toByteArray();
}

Example 10 with ByteArrayOutputStream

use of com.codeforces.commons.io.ByteArrayOutputStream in project codeforces-commons by Codeforces.

the class ZipUtil method getZipEntryBytes.

@Nonnull
public static byte[] getZipEntryBytes(File zipFile, String zipEntryPath) throws IOException {
    ByteArrayOutputStream zipEntryOutputStream = new ByteArrayOutputStream();
    writeZipEntryBytes(zipFile, zipEntryPath, zipEntryOutputStream);
    return zipEntryOutputStream.toByteArray();
}