Java Code Examples for java.util.zip.DeflaterOutputStream#write()
The following examples show how to use
java.util.zip.DeflaterOutputStream#write() .
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Example 1
Source File: UtilAll.java From rocketmq_trans_message with Apache License 2.0 | 6 votes |
public static byte[] compress(final byte[] src, final int level) throws IOException { byte[] result = src; ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(src.length); java.util.zip.Deflater defeater = new java.util.zip.Deflater(level); DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(byteArrayOutputStream, defeater); try { deflaterOutputStream.write(src); deflaterOutputStream.finish(); deflaterOutputStream.close(); result = byteArrayOutputStream.toByteArray(); } catch (IOException e) { defeater.end(); throw e; } finally { try { byteArrayOutputStream.close(); } catch (IOException ignored) { } defeater.end(); } return result; }
Example 2
Source File: PRStream.java From itext2 with GNU Lesser General Public License v3.0 | 6 votes |
/** * Sets the data associated with the stream, either compressed or * uncompressed. Note that the data will never be compressed if * Document.compress is set to false. * * @param data raw data, decrypted and uncompressed. * @param compress true if you want the stream to be compressed. * @param compressionLevel a value between -1 and 9 (ignored if compress == false) * @since iText 2.1.3 */ public void setData(byte[] data, boolean compress, int compressionLevel) { remove(PdfName.FILTER); this.offset = -1; if (Document.compress && compress) { try { ByteArrayOutputStream stream = new ByteArrayOutputStream(); Deflater deflater = new Deflater(compressionLevel); DeflaterOutputStream zip = new DeflaterOutputStream(stream, deflater); zip.write(data); zip.close(); deflater.end(); bytes = stream.toByteArray(); this.compressionLevel = compressionLevel; } catch (IOException ioe) { throw new ExceptionConverter(ioe); } put(PdfName.FILTER, PdfName.FLATEDECODE); } else bytes = data; setLength(bytes.length); }
Example 3
Source File: ZlibEncoder.java From Decoder-Improved with GNU General Public License v3.0 | 6 votes |
@Override public byte[] modifyBytes(byte[] input) { try { ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length); DeflaterOutputStream deflater = new DeflaterOutputStream(bos); deflater.write(input, 0, input.length); deflater.finish(); deflater.flush(); bos.flush(); deflater.close(); bos.close(); return bos.toByteArray(); } catch (IOException e) { return new byte[]{}; } }
Example 4
Source File: MixAll.java From iot-mqtt with Apache License 2.0 | 6 votes |
public static byte[] compress(final byte[] src,final int level) throws IOException { byte[] result = src; ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(src.length); Deflater deflater = new Deflater(level); DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(byteArrayOutputStream,deflater); try{ deflaterOutputStream.write(src); deflaterOutputStream.flush(); deflaterOutputStream.close(); result = byteArrayOutputStream.toByteArray(); }catch (IOException e){ deflater.end(); throw e; }finally { try { byteArrayOutputStream.close(); } catch (IOException ignored) { } deflater.end(); } return result; }
Example 5
Source File: DeflateCompressor.java From iGap-Android with GNU Affero General Public License v3.0 | 6 votes |
public static byte[] compress(byte[] input) throws IOException { // Destination where compressed data will be stored. ByteArrayOutputStream baos = new ByteArrayOutputStream(); // Create a compressor. Deflater deflater = createDeflater(); DeflaterOutputStream dos = new DeflaterOutputStream(baos, deflater); // Compress the data. // // Some other implementations such as Jetty and Tyrus use // Deflater.deflate(byte[], int, int, int) with Deflate.SYNC_FLUSH, // but this implementation does not do it intentionally because the // method and the constant value are not available before Java 7. dos.write(input, 0, input.length); dos.close(); // Release the resources held by the compressor. deflater.end(); // Retrieve the compressed data. return baos.toByteArray(); }
Example 6
Source File: BenchmarkRunner.java From dubbox with Apache License 2.0 | 6 votes |
private static byte[] compressDeflate(byte[] data) { try { ByteArrayOutputStream bout = new ByteArrayOutputStream(500); DeflaterOutputStream compresser = new DeflaterOutputStream(bout); compresser.write(data, 0, data.length); compresser.finish(); compresser.flush(); return bout.toByteArray(); } catch (IOException ex) { AssertionError ae = new AssertionError("IOException while writing to ByteArrayOutputStream!"); ae.initCause(ex); throw ae; } }
Example 7
Source File: PRStream.java From itext2 with GNU Lesser General Public License v3.0 | 6 votes |
/** * Creates a new PDF stream object that will replace a stream * in a existing PDF file. * @param reader the reader that holds the existing PDF * @param conts the new content * @param compressionLevel the compression level for the content * @since 2.1.3 (replacing the existing constructor without param compressionLevel) */ public PRStream(PdfReader reader, byte[] conts, int compressionLevel) { this.reader = reader; this.offset = -1; if (Document.compress) { try { ByteArrayOutputStream stream = new ByteArrayOutputStream(); Deflater deflater = new Deflater(compressionLevel); DeflaterOutputStream zip = new DeflaterOutputStream(stream, deflater); zip.write(conts); zip.close(); deflater.end(); bytes = stream.toByteArray(); } catch (IOException ioe) { throw new ExceptionConverter(ioe); } put(PdfName.FILTER, PdfName.FLATEDECODE); } else bytes = conts; setLength(bytes.length); }
Example 8
Source File: StandardEncrypter.java From fastods with GNU General Public License v3.0 | 6 votes |
/** * Deflate as LibreOffice. * * @param data the data to DEFLATE * @return the DEFLATEd data * @throws IOException if a I/O error occurs */ public byte[] compress(final byte[] data) throws IOException { final ByteArrayOutputStream os = new ByteArrayOutputStream(); final Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION, true); final DeflaterOutputStream dos = new DeflaterOutputStream(os, deflater); final InputStream is = new ByteArrayInputStream(data); final byte[] buffer = new byte[BUFFER_SIZE]; int count = is.read(buffer); while (count != -1) { dos.write(buffer, 0, count); count = is.read(buffer); } dos.close(); return os.toByteArray(); }
Example 9
Source File: UtilAll.java From DDMQ with Apache License 2.0 | 6 votes |
public static byte[] compress(final byte[] src, final int level) throws IOException { byte[] result = src; ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(src.length); java.util.zip.Deflater defeater = new java.util.zip.Deflater(level); DeflaterOutputStream deflaterOutputStream = new DeflaterOutputStream(byteArrayOutputStream, defeater); try { deflaterOutputStream.write(src); deflaterOutputStream.finish(); deflaterOutputStream.close(); result = byteArrayOutputStream.toByteArray(); } catch (IOException e) { defeater.end(); throw e; } finally { try { byteArrayOutputStream.close(); } catch (IOException ignored) { } defeater.end(); } return result; }
Example 10
Source File: BenchmarkRunner.java From dubbox with Apache License 2.0 | 6 votes |
private static byte[] compressDeflate(byte[] data) { try { ByteArrayOutputStream bout = new ByteArrayOutputStream(500); DeflaterOutputStream compresser = new DeflaterOutputStream(bout); compresser.write(data, 0, data.length); compresser.finish(); compresser.flush(); return bout.toByteArray(); } catch (IOException ex) { AssertionError ae = new AssertionError("IOException while writing to ByteArrayOutputStream!"); ae.initCause(ex); throw ae; } }
Example 11
Source File: PNGImageWriter.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
private byte[] deflate(byte[] b) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); DeflaterOutputStream dos = new DeflaterOutputStream(baos); dos.write(b); dos.close(); return baos.toByteArray(); }
Example 12
Source File: TestZlibCompressorDecompressor.java From big-c with Apache License 2.0 | 5 votes |
private void compressDecompressLoop(int rawDataSize) throws IOException { byte[] rawData = null; rawData = generate(rawDataSize); ByteArrayOutputStream baos = new ByteArrayOutputStream(rawDataSize+12); DeflaterOutputStream dos = new DeflaterOutputStream(baos); dos.write(rawData); dos.flush(); dos.close(); byte[] compressedResult = baos.toByteArray(); int compressedSize = compressedResult.length; ZlibDirectDecompressor decompressor = new ZlibDirectDecompressor(); ByteBuffer inBuf = ByteBuffer.allocateDirect(compressedSize); ByteBuffer outBuf = ByteBuffer.allocateDirect(rawDataSize); inBuf.put(compressedResult, 0, compressedSize); inBuf.flip(); ByteBuffer expected = ByteBuffer.wrap(rawData); outBuf.clear(); while(!decompressor.finished()) { decompressor.decompress(inBuf, outBuf); if (outBuf.remaining() == 0) { outBuf.flip(); while (outBuf.remaining() > 0) { assertEquals(expected.get(), outBuf.get()); } outBuf.clear(); } } outBuf.flip(); while (outBuf.remaining() > 0) { assertEquals(expected.get(), outBuf.get()); } outBuf.clear(); assertEquals(0, expected.remaining()); }
Example 13
Source File: TestRawTripPayload.java From hudi with Apache License 2.0 | 5 votes |
private byte[] compressData(String jsonData) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); DeflaterOutputStream dos = new DeflaterOutputStream(baos, new Deflater(Deflater.BEST_COMPRESSION), true); try { dos.write(jsonData.getBytes()); } finally { dos.flush(); dos.close(); } return baos.toByteArray(); }
Example 14
Source File: DigestUtils.java From opencron with Apache License 2.0 | 5 votes |
public static String compressData(String data, String charset) { try { ByteArrayOutputStream bos = new ByteArrayOutputStream(); DeflaterOutputStream zos = new DeflaterOutputStream(bos); zos.write(data.getBytes()); zos.close(); return new String(getenBASE64inCodec(bos.toByteArray(), charset)); } catch (Exception ex) { ex.printStackTrace(); return "ZIP_ERR"; } }
Example 15
Source File: ZLibUtil.java From MonitorClient with Apache License 2.0 | 5 votes |
/** * 压缩 这是一个测试 * @param data 待压缩数据 * @param os 输出流 */ public static void compress(byte[] data, OutputStream os) { DeflaterOutputStream dos = new DeflaterOutputStream(os); try { dos.write(data, 0, data.length); dos.finish(); dos.flush(); dos.close(); } catch (IOException e) { e.printStackTrace(); } }
Example 16
Source File: PNGImageWriter.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
private byte[] deflate(byte[] b) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); DeflaterOutputStream dos = new DeflaterOutputStream(baos); dos.write(b); dos.close(); return baos.toByteArray(); }
Example 17
Source File: ZLibUtils.java From android-project-wo2b with Apache License 2.0 | 5 votes |
/** * 压缩 * * @param data 待压缩的数据 * @param os 输出流 * @throws IOException */ public static void compress(byte[] data, OutputStream os) throws IOException { DeflaterOutputStream dos = new DeflaterOutputStream(os); dos.write(data, 0, data.length); dos.finish(); dos.flush(); }
Example 18
Source File: PNGImageWriter.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
private byte[] deflate(byte[] b) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); DeflaterOutputStream dos = new DeflaterOutputStream(baos); dos.write(b); dos.close(); return baos.toByteArray(); }
Example 19
Source File: PNGImageWriter.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
private byte[] deflate(byte[] b) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(); DeflaterOutputStream dos = new DeflaterOutputStream(baos); dos.write(b); dos.close(); return baos.toByteArray(); }
Example 20
Source File: ReadParams.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
public static void main(String args[]) throws Exception{ /* initialise stuff */ File fn = new File("x.ReadBounds"); FileOutputStream fout = new FileOutputStream(fn); for (int i = 0; i < 32; i++) { fout.write(i); } fout.close(); byte b[] = new byte[64]; for(int i = 0; i < 64; i++) { b[i] = 1; } /* test all input streams */ FileInputStream fis = new FileInputStream(fn); doTest(fis); doTest1(fis); fis.close(); BufferedInputStream bis = new BufferedInputStream(new MyInputStream(1024)); doTest(bis); doTest1(bis); bis.close(); ByteArrayInputStream bais = new ByteArrayInputStream(b); doTest(bais); doTest1(bais); bais.close(); FileOutputStream fos = new FileOutputStream(fn); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeInt(12345); oos.writeObject("Today"); oos.writeObject(new Integer(32)); oos.close(); ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fn)); doTest(ois); doTest1(ois); ois.close(); DataInputStream dis = new DataInputStream(new MyInputStream(1024)); doTest(dis); doTest1(dis); dis.close(); LineNumberInputStream lis = new LineNumberInputStream(new MyInputStream(1024)); doTest(lis); doTest1(lis); lis.close(); PipedOutputStream pos = new PipedOutputStream(); PipedInputStream pis = new PipedInputStream(); pos.connect(pis); pos.write(b, 0, 64); doTest(pis); doTest1(pis); pis.close(); PushbackInputStream pbis = new PushbackInputStream(new MyInputStream(1024)); doTest(pbis); doTest1(pbis); pbis.close(); StringBufferInputStream sbis = new StringBufferInputStream(new String(b)); doTest(sbis); doTest1(sbis); sbis.close(); SequenceInputStream sis = new SequenceInputStream(new MyInputStream(1024), new MyInputStream(1024)); doTest(sis); doTest1(sis); sis.close(); ZipInputStream zis = new ZipInputStream(new FileInputStream(fn)); doTest(zis); doTest1(zis); zis.close(); byte[] data = new byte[256]; ByteArrayOutputStream bos = new ByteArrayOutputStream(); DeflaterOutputStream dos = new DeflaterOutputStream(bos); dos.write(data, 0, data.length); dos.close(); InflaterInputStream ifs = new InflaterInputStream (new ByteArrayInputStream(bos.toByteArray())); doTest(ifs); doTest1(ifs); ifs.close(); /* cleanup */ fn.delete(); }