Examples of java.util.zip.Inflater

java.util.zip.Inflater
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 Deflater @version 1.47, 04/07/06 @author David Connelly

            {
                case GZIP:
                  FastByteArrayOutputStream byteArray = new FastByteArrayOutputStream();
                    byte[] outBuffer = new byte[1024], inBuffer = new byte[1024];
                    
                    Inflater decompressor = new Inflater();
                    
                    int lenRead = 0;
                    while (true)
                    {
                        if (decompressor.needsInput())
                            lenRead = query.remaining() < 1024 ? query.remaining() : 1024;
                            query.get(inBuffer, 0, lenRead);
                            decompressor.setInput(inBuffer, 0, lenRead);
                        
                        int lenWrite = 0;
                        while ((lenWrite = decompressor.inflate(outBuffer)) !=0)
                            byteArray.write(outBuffer, 0, lenWrite);
                        
                        if (decompressor.finished())
                            break;
                    }
                    
                    decompressor.end();
                    
                    queryString = new String(byteArray.toByteArray(), 0, byteArray.size(), "UTF-8");
                    break;
                case NONE:
                    try

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        // Parse prior IDAT chunks
        InputStream seqStream = 
            new SequenceInputStream(streamVec.elements());
        InputStream infStream =
            new InflaterInputStream(seqStream, new Inflater());
        dataStream = new DataInputStream(infStream);
        
        // Create an empty WritableRaster
        int depth = bitDepth;
        if ((colorType == PNG_COLOR_GRAY) &&

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            bStream.mark(100);
            byte[] bytes = new byte[100];
            int nbBytes = bStream.read(bytes);
            bStream.reset();


            Inflater inflater = new Inflater();
            inflater.setInput(bytes, 0, nbBytes);
            try {
                inflater.inflate(new byte[1000]);


                // no error decompressing the first 100 bytes, so we
                // assume the "zlib"-variant was used.
                result = new InflaterInputStream(bStream);
            } catch (DataFormatException e) {
                // there was an error decompressing the first 100 bytes,
                // so we assume the "gzip/raw"-variant was used.
                result = new InflaterInputStream(bStream, new Inflater(true));
            } finally {
                inflater.end();
            }
        } else {
            result = in;
        }

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        // Parse prior IDAT chunks
        InputStream seqStream =
            new SequenceInputStream(Collections.enumeration(streamVec));
        InputStream infStream =
            new InflaterInputStream(seqStream, new Inflater());
        dataStream = new DataInputStream(infStream);


        // Create an empty WritableRaster
        int depth = bitDepth;
        if ((colorType == PNG_COLOR_GRAY) &&

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        // Parse prior IDAT chunks
        InputStream seqStream =
            new SequenceInputStream( Collections.enumeration( streamVec ));
        InputStream infStream =
            new InflaterInputStream(seqStream, new Inflater());
        dataStream = new DataInputStream(infStream);


        // Create an empty WritableRaster
        int depth = bitDepth;
        if ((colorType == PNG_COLOR_GRAY) &&

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            {
                case GZIP:
                    DataOutputBuffer decompressed = new DataOutputBuffer();
                    byte[] outBuffer = new byte[1024], inBuffer = new byte[1024];


                    Inflater decompressor = new Inflater();


                    int lenRead = 0;
                    while (true)
                    {
                        if (decompressor.needsInput())
                            lenRead = query.remaining() < 1024 ? query.remaining() : 1024;
                        query.get(inBuffer, 0, lenRead);
                        decompressor.setInput(inBuffer, 0, lenRead);


                        int lenWrite = 0;
                        while ((lenWrite = decompressor.inflate(outBuffer)) != 0)
                            decompressed.write(outBuffer, 0, lenWrite);


                        if (decompressor.finished())
                            break;
                    }


                    decompressor.end();


                    queryString = new String(decompressed.getData(), 0, decompressed.size(), "UTF-8");
                    break;
                case NONE:
                    try

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        if (iccpNode instanceof IIOMetadataNode) {
            IIOMetadataNode imn = (IIOMetadataNode) iccpNode;
            byte[] prof = (byte[]) imn.getUserObject();
            String comp = imn.getAttribute("compressionMethod");
            if ("deflate".equalsIgnoreCase(comp)) {
                Inflater decompresser = new Inflater();
                decompresser.setInput(prof);
                byte[] result = new byte[100];
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                boolean failed = false;
                while (!decompresser.finished() && !failed) {
                    try {
                        int resultLength = decompresser.inflate(result);
                        bos.write(result, 0, resultLength);
                        if (resultLength == 0) {
                            // this means more data or an external dictionary is
                            // needed. Both of which are not available, so we
                            // fail.
                            log.debug("Failed to deflate ICC Profile");
                            failed = true;
                        }
                    } catch (DataFormatException e) {
                        log.debug("Failed to deflate ICC Profile", e);
                        failed = true;
                    }
                }
                decompresser.end();
                try {
                    iccProf = ColorProfileUtil.getICC_Profile(bos.toByteArray());
                } catch (IllegalArgumentException e) {
                    log.debug("Failed to interpret embedded ICC Profile", e);
                    iccProf = null;

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            case COMP_NONE:
            case COMP_PACKBITS:
                // Do nothing.
                break;
            case COMP_DEFLATE:
                inflater = new Inflater();
                break;
            case COMP_FAX_G3_1D:
            case COMP_FAX_G3_2D:
            case COMP_FAX_G4_2D:
                if (sampleSize != 1) {

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            {
                case GZIP:
                    DataOutputBuffer decompressed = new DataOutputBuffer();
                    byte[] outBuffer = new byte[1024], inBuffer = new byte[1024];


                    Inflater decompressor = new Inflater();


                    int lenRead = 0;
                    while (true)
                    {
                        if (decompressor.needsInput())
                            lenRead = query.remaining() < 1024 ? query.remaining() : 1024;
                        query.get(inBuffer, 0, lenRead);
                        decompressor.setInput(inBuffer, 0, lenRead);


                        int lenWrite = 0;
                        while ((lenWrite = decompressor.inflate(outBuffer)) != 0)
                            decompressed.write(outBuffer, 0, lenWrite);


                        if (decompressor.finished())
                            break;
                    }


                    decompressor.end();


                    queryString = new String(decompressed.getData(), 0, decompressed.size(), "UTF-8");
                    break;
                case NONE:
                    try

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  public void test_reset() {
    // test method of java.util.zip.inflater.reset()
    byte byteArray[] = { 1, 3, 4, 7, 8, 'e', 'r', 't', 'y', '5' };
    byte outPutInf[] = new byte[100];
    int y = 0;
    Inflater inflate = new Inflater();
    try {
      while (!(inflate.finished())) {
        if (inflate.needsInput()) {
          inflate.setInput(outPutBuff1);
        }
        y += inflate.inflate(outPutInf, y, outPutInf.length - y);
      }
    } catch (DataFormatException e) {
      fail("Invalid input to be decompressed");
    }
    for (int i = 0; i < byteArray.length; i++) {
      assertTrue(
          "Final decompressed data does not equal the original data",
          byteArray[i] == outPutInf[i]);
    }
    assertEquals("final decompressed data contained more bytes than original - reset",
        0, outPutInf[byteArray.length]);


    // testing that resetting the inflater will also return the correct
    // decompressed data


    inflate.reset();
    try {
      while (!(inflate.finished())) {
        if (inflate.needsInput()) {
          inflate.setInput(outPutBuff1);
        }
        inflate.inflate(outPutInf);
      }
    } catch (DataFormatException e) {
      fail("Invalid input to be decompressed");
    }
    for (int i = 0; i < byteArray.length; i++) {

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