Examples of com.ning.compress.gzip.OptimizedGZIPInputStream

com.ning.compress.gzip.OptimizedGZIPInputStream
Optimized variant of {@link java.util.zip.GZIPInputStream} thatreuses underlying {@link java.util.zip.Deflater} instance}.

            case NONE:
                break;
            case LZF:
                return new LZFInputStream(in);
            case GZIP:
                return new OptimizedGZIPInputStream(in);
            default: // sanity check
                throw new IllegalArgumentException("Unrecognized compression type: "+comp);
            }
        }
        return in;

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    {
        if (expSize <= 0) {
            return gzipUncompress(compData);
        }
        byte[] buffer = new byte[expSize];
        OptimizedGZIPInputStream in = new OptimizedGZIPInputStream(new ByteArrayInputStream(compData));
        int offset = 0;
        int left = buffer.length;
        int count;


        while (left > 0 && (count = in.read(buffer, offset, left)) > 0) {
            offset += count;
            left -= count;
        }
        // should have gotten exactly expected amount
        try {
            if (offset < expSize) {
                throw new IOException("Corrupt GZIP/Deflate data: expected "+expSize+" bytes, got "+offset);
            }
            // and no more
            if (in.read() != -1) {
                throw new IOException("Corrupt GZIP/Deflate data: expected "+expSize+" bytes, got at least one more");
            }
        } finally {
            try { in.close(); } catch (IOException e) { }
        }
        return buffer;
    }

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    }


    public static byte[] gzipUncompress(byte[] compData)
        throws IOException
    {
        OptimizedGZIPInputStream in = new OptimizedGZIPInputStream(new ByteArrayInputStream(compData));
        ByteArrayOutputStream bytes = new ByteArrayOutputStream(16 + (compData.length << 1));
        byte[] buffer = new byte[500];
        int count;


        while ((count = in.read(buffer)) > 0) {
            bytes.write(buffer, 0, count);
        }
        in.close();
        bytes.close();
        return bytes.toByteArray();
    }

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