Examples of java.util.zip.Deflater

java.util.zip.Deflater
de a String into bytes String inputString = "blahblahblah\u20AC\u20AC"; byte[] input = inputString.getBytes("UTF-8"); // Compress the bytes byte[] output = new byte[100]; Deflater compresser = new Deflater(); compresser.setInput(input); compresser.finish(); int compressedDataLength = compresser.deflate(output); // Decompress the bytes Inflater decompresser = new Inflater(); decompresser.setInput(output, 0, compressedDataLength); byte[] result = new byte[100]; int resultLength = decompresser.inflate(result); decompresser.end(); // Decode the bytes into a String String outputString = new String(result, 0, resultLength, "UTF-8"); } catch(java.io.UnsupportedEncodingException ex) { // handle } catch (java.util.zip.DataFormatException ex) { // handle } @see Inflater @version 1.45, 04/07/06 @author David Connelly

            }
        }
        try {
            // compress
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            DeflaterOutputStream zip = new DeflaterOutputStream(stream, new Deflater(compressionLevel));
            if (streamBytes != null)
                streamBytes.writeTo(zip);
            else
                zip.write(bytes);
            zip.close();

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            OutputStreamEncryption ose = null;
            OutputStream fout = osc;
            if (crypto != null && !crypto.isEmbeddedFilesOnly())
                fout = ose = crypto.getEncryptionStream(fout);
            if (compressed)    
                fout = def = new DeflaterOutputStream(fout, new Deflater(compressionLevel), 0x8000);
            
            byte buf[] = new byte[4192];
            while (true) {
                int n = inputStream.read(buf);
                if (n <= 0)

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    public void init() throws Exception {
        deflater_pool=new ArrayBlockingQueue<Deflater>(pool_size);
        for(int i=0; i < pool_size; i++) {
            deflater_pool.add(new Deflater(compression_level));
        }
        inflater_pool=new ArrayBlockingQueue<Inflater>(pool_size);
        for(int i=0; i < pool_size; i++) {
            inflater_pool.add(new Inflater());
        }

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            int length=msg.getLength(); // takes offset/length (if set) into account
            if(length >= min_size) {
                byte[] payload=msg.getRawBuffer(); // here we get the ref so we can avoid copying
                byte[] compressed_payload=new byte[length];
                int compressed_size;
                Deflater deflater=null;
                try {
                    deflater=deflater_pool.take();
                    deflater.reset();
                    deflater.setInput(payload, msg.getOffset(), length);
                    deflater.finish();
                    deflater.deflate(compressed_payload);
                    compressed_size=deflater.getTotalOut();


                    if ( compressed_size < length ) { // JGRP-1000
                        byte[] new_payload=new byte[compressed_size];
                        System.arraycopy(compressed_payload, 0, new_payload, 0, compressed_size);
                        msg.setBuffer(new_payload);

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        this.reader = reader;
        this.offset = -1;
        if (Document.compress) {
            try {
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                DeflaterOutputStream zip = new DeflaterOutputStream(stream, new Deflater(compressionLevel));
                zip.write(conts);
                zip.close();
                bytes = stream.toByteArray();
            }
            catch (IOException ioe) {

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        remove(PdfName.FILTER);
        this.offset = -1;
        if (Document.compress && compress) {
            try {
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                DeflaterOutputStream zip = new DeflaterOutputStream(stream, new Deflater(compressionLevel));
                zip.write(data);
                zip.close();
                bytes = stream.toByteArray();
                this.compressionLevel = compressionLevel;
            }

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            streamBytes = new ByteArrayOutputStream();
            if (Document.compress)
            {
                compressed = true;
                compressionLevel = text.getPdfWriter().getCompressionLevel();
                out = new DeflaterOutputStream(streamBytes, new Deflater(compressionLevel));
            }
            else
                out = streamBytes;
            int rotation = page.getRotation();
            switch (rotation) {

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            OutputStreamEncryption ose = null;
            OutputStream fout = osc;
            if (crypto != null)
                fout = ose = crypto.getEncryptionStream(fout);
            if (compressed)    
                fout = def = new DeflaterOutputStream(fout, new Deflater(compressionLevel), 0x8000);
            
            byte buf[] = new byte[4192];
            while (true) {
                int n = inputStream.read(buf);
                if (n <= 0)

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 */
public class ContinousInflaterInputStreamTest extends TestCase {


    public void testContinuous() throws IOException {
        FastByteArrayOutputStream out = new FastByteArrayOutputStream(8192);
        DeflaterOutputStream def1 = new DeflaterOutputStream(out, new Deflater(Deflater.DEFAULT_COMPRESSION, false), 100);
        IOUtils.writeString("1", def1);
        IOUtils.writeInt(2, def1);
        def1.close();
        DeflaterOutputStream def2 = new DeflaterOutputStream(out, new Deflater(Deflater.DEFAULT_COMPRESSION, false), 100);
        IOUtils.writeString("3", def2);
        IOUtils.writeString("4", def2);
        def2.close();
        DeflaterOutputStream def3 = new DeflaterOutputStream(out, new Deflater(Deflater.DEFAULT_COMPRESSION, false), 100);
        IOUtils.writeString("5", def3);
        IOUtils.writeString("6", def3);
        def3.close();


        byte[] b = out.toByteArray();

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        Assert.assertEquals(0, inf1.available());
    }


    public void testNonContinuous() throws IOException {
        FastByteArrayOutputStream out = new FastByteArrayOutputStream(8192);
        DeflaterOutputStream def1 = new DeflaterOutputStream(out, new Deflater(Deflater.DEFAULT_COMPRESSION, false), 100);
        IOUtils.writeString("1", def1);
        IOUtils.writeInt(2, def1);
        IOUtils.writeString("3", def1);
        IOUtils.writeString("4", def1);
        IOUtils.writeString("5", def1);

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