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

Example 61 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project teaTime by ancfdy.

the class AppZLibMgr method decompress.

/**
 * 解压缩
 *
 * @param is
 *            输入流
 * @return byte[] 解压缩后的数据
 */
public static byte[] decompress(InputStream is) {
    InflaterInputStream iis = new InflaterInputStream(is);
    ByteArrayOutputStream o = new ByteArrayOutputStream(1024);
    try {
        int i = 1024;
        byte[] buf = new byte[i];
        while ((i = iis.read(buf, 0, i)) > 0) {
            o.write(buf, 0, i);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return o.toByteArray();
}

Example 62 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project commons by twitter.

the class Base64ZlibCodec method decompress.

private static byte[] decompress(byte[] compressed) throws InvalidDataException {
    byte[] bytes;
    try {
        final InputStream bin = new ByteArrayInputStream(compressed);
        final InputStream zin;
        if (startsWith(compressed, GZIP_HEADER_PREFIX)) {
            zin = new GZIPInputStream(bin);
        } else if (startsWith(compressed, ZLIB_HEADER_PREFIX)) {
            zin = new InflaterInputStream(bin);
        } else {
            throw new Base64ZlibCodec.InvalidDataException("Value doesn't start with either GZIP or zlib header");
        }
        try {
            bytes = ByteStreams.toByteArray(zin);
        } finally {
            zin.close();
        }
    } catch (IOException e) {
        throw new Base64ZlibCodec.InvalidDataException("zlib/GZIP decoding error", e);
    }
    return bytes;
}

Example 63 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project hazelcast by hazelcast.

the class MetricsCompressor method readDictionary.

private static String[] readDictionary(byte[] dictionaryBlob) throws IOException {
    try (DataInputStream dis = new DataInputStream(new InflaterInputStream(new ByteArrayInputStream(dictionaryBlob)))) {
        int dictionarySize = dis.readInt();
        String[] dictionary = new String[dictionarySize];
        String lastWord = "";
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < dictionarySize; i++) {
            int dictionaryId = dis.readInt();
            int commonLen = dis.readUnsignedByte();
            int diffLen = dis.readUnsignedByte();
            sb.append(lastWord, 0, commonLen);
            for (int j = 0; j < diffLen; j++) {
                sb.append(dis.readChar());
            }
            String readWord = sb.toString();
            lastWord = readWord;
            dictionary[dictionaryId] = readWord;
            sb.setLength(0);
        }
        return dictionary;
    }
}

Example 64 with InflaterInputStream

use of java.util.zip.InflaterInputStream in project jena by apache.

the class HttpLib method getInputStream.

/**
 * Get the InputStream from an HttpResponse, handling possible compression settings.
 * The application must consume or close the {@code InputStream} (see {@link #finish(InputStream)}).
 * Closing the InputStream may close the HTTP connection.
 * Assumes the status code has been handled e.g. {@link #handleHttpStatusCode} has been called.
 */
public static InputStream getInputStream(HttpResponse<InputStream> httpResponse) {
    String encoding = httpResponse.headers().firstValue(HttpNames.hContentEncoding).orElse("");
    InputStream responseInput = httpResponse.body();
    // "Content-Encoding: chunked, <compression>"
    try {
        switch(encoding) {
            case "":
            case // Proper name for no compression.
            "identity":
                return responseInput;
            case "gzip":
                return new GZIPInputStream(responseInput, 2 * 1024);
            case "inflate":
                return new InflaterInputStream(responseInput);
            // RFC7932
            case "br":
            default:
                throw new UnsupportedOperationException("Not supported: Content-Encoding: " + encoding);
        }
    } catch (IOException ex) {
        throw new UncheckedIOException(ex);
    }
}

Example 65 with InflaterInputStream

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

the class DeflaterOutputStreamTest method test_write$BII.

/**
 * java.util.zip.DeflaterOutputStream#write(byte[], int, int)
 */
/* J2ObjC removed: not supported by Junit 4.11 (https://github.com/google/j2objc/issues/1318).
    @DisableResourceLeakageDetection(
            why = "DeflaterOutputStream.close() does not work properly if finish() throws an"
                    + " exception; DeflaterOutputStream.finish() throws an exception if the"
                    + " underlying OutputStream has been closed and the Deflater still has data to"
                    + " write.",
            bug = "31797037") */
public void test_write$BII() throws Exception {
    byte[] byteArray = { 1, 3, 4, 7, 8, 3, 6 };
    // Test to see if the correct bytes are saved.
    File f1 = File.createTempFile("writeBII", ".tst");
    FileOutputStream fos1 = new FileOutputStream(f1);
    DeflaterOutputStream dos1 = new DeflaterOutputStream(fos1);
    dos1.write(byteArray, 2, 3);
    dos1.close();
    FileInputStream fis = new FileInputStream(f1);
    InflaterInputStream iis = new InflaterInputStream(fis);
    assertEquals("Incorrect Byte Returned.", 4, iis.read());
    assertEquals("Incorrect Byte Returned.", 7, iis.read());
    assertEquals("Incorrect Byte Returned.", 8, iis.read());
    assertEquals("Incorrect Byte Returned (EOF).", -1, iis.read());
    assertEquals("Incorrect Byte Returned (EOF).", -1, iis.read());
    iis.close();
    f1.delete();
    // Test for trying to write more bytes than available from the array
    File f2 = File.createTempFile("writeBII2", ".tst");
    FileOutputStream fos2 = new FileOutputStream(f2);
    DeflaterOutputStream dos2 = new DeflaterOutputStream(fos2);
    try {
        dos2.write(byteArray, 2, 10);
        fail("IndexOutOfBoundsException not thrown");
    } catch (IndexOutOfBoundsException e) {
    }
    // Test for trying to write a negative number of bytes.
    try {
        dos2.write(byteArray, 2, Integer.MIN_VALUE);
        fail("IndexOutOfBoundsException not thrown");
    } catch (IndexOutOfBoundsException e) {
    }
    // Test for trying to start writing from a byte < 0 from the array.
    try {
        dos2.write(byteArray, Integer.MIN_VALUE, 2);
        fail("IndexOutOfBoundsException not thrown");
    } catch (IndexOutOfBoundsException e) {
    }
    // size.
    try {
        dos2.write(byteArray, 10, 2);
        fail("IndexOutOfBoundsException not thrown");
    } catch (IndexOutOfBoundsException e) {
    }
    dos2.close();
    // Not sure if this test is that important.
    // Checks to see if you can write using the DeflaterOutputStream
    // after
    // the FileOutputStream has been closed.
    FileOutputStream fos3 = new FileOutputStream(f2);
    DeflaterOutputStream dos3 = new DeflaterOutputStream(fos3);
    fos3.close();
    try {
        dos3.write(byteArray, 2, 3);
        fail("IOException not thrown");
    } catch (IOException e) {
    }
    // Close to try and free up the resources.
    try {
        dos3.close();
        fail("IOException not thrown");
    } catch (IOException e) {
    }
    f2.delete();
}