Examples of java.util.zip.Inflater.inflate()

java.util.zip.Inflater.inflate()
Uncompresses bytes into specified buffer. Returns actual number of bytes uncompressed. A return value of 0 indicates that needsInput() or needsDictionary() should be called in order to determine if more input data or a preset dictionary is required. In the latter case, getAdler() can be used to get the Adler-32 value of the dictionary required. @param b the buffer for the uncompressed data @param off the start offset of the data @param len the maximum number of uncompressed bytes @return the actual number of uncompressed bytes @exception DataFormatException if the compressed data format is invalid @see Inflater#needsInput @see Inflater#needsDictionary

    int olen = 0;
    Inflater decompresser = new Inflater();
    byte output[] = new byte[len];
    decompresser.setInput(input);
    try {
      olen = decompresser.inflate(output);
    } catch(java.util.zip.DataFormatException e) {
    }
    decompresser.end();
    if(len != olen) return new byte[0];
    return output;

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        // Gzipped
        Inflater i = new Inflater();
        i.setInput(data, offset, length);
        // We shouldn't ever need a 4096 bytes long ref!
        byte[] output = new byte[4096];
        length = i.inflate(output, 0, output.length);
        // Finished
        data = output;
        offset = 0;
        if(logMINOR)
          Logger.minor(PeerNode.class, "We have decompressed a "+length+" bytes big reference.");

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        } else {
          if (data[0] == 0x78 /* 'x' */) {
            Inflater zlib = new Inflater();
            zlib.setInput(data, 0, compressedLen);
            byte[] result = new byte[actualLen * 3];
            int resultLen = zlib.inflate(result);
            zlib.end();
            data = result;
            dataOffset = 0;
            dataLen = resultLen;
          } else if (data[0] == 0x75 /* 'u' */) {

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        // Decompress the data
        byte[] buf = new byte[1024];
        while (!decompressor.finished())
        {
            int count = decompressor.inflate(buf);
            bos.write(buf, 0, count);
        }
        bos.close();


        // Get the decompressed data

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                            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;
                    }

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                            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;
                    }

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            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) {

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                            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;
                    }

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                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.

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                            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;
                    }

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