com.helger.commons.codec

Class LZWCodec

java.lang.Object

com.helger.commons.codec.LZWCodec

All Implemented Interfaces:

IByteArrayCodec, IByteArrayDecoder, IByteArrayEncoder, IByteArrayStreamDecoder, IByteArrayStreamEncoder, ICodec<byte[]>, IDecoder<byte[],byte[]>, IEncoder<byte[],byte[]>

public class LZWCodec
extends Object
implements IByteArrayCodec

Encoder and decoder for the LZW algorithm

Author:

Philip Helger

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	LZWCodec.AbstractLZWDictionary
protected static class	LZWCodec.LZWDecodeDictionary
protected static class	LZWCodec.LZWEncodeDictionary
protected static class	LZWCodec.LZWNode A single LZW node

Constructor Summary

Constructors

Constructor and Description
LZWCodec()

Method Summary

Modifier and Type	Method and Description
void	decode(byte[] aEncodedBuffer, int nOfs, int nLen, OutputStream aOS) Decode a byte array.
void	decode(InputStream aEncodedIS, OutputStream aOS)
void	encode(byte[] aBuffer, int nOfs, int nLen, OutputStream aOS) Encode (part of) a byte array to an OutputStream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.helger.commons.codec.ICodec

identity

Methods inherited from interface com.helger.commons.codec.IByteArrayStreamDecoder

getDecoded, getDecodedAsString, getDecodedAsString, getDecodedAsString

Methods inherited from interface com.helger.commons.codec.IByteArrayDecoder

getDecoded, getDecoded, getDecodedLength

Methods inherited from interface com.helger.commons.codec.IByteArrayStreamEncoder

getEncoded, getEncoded, getEncoded, getEncodedAsString, getEncodedAsString, getEncodedAsString, getEncodedLength

Constructor Detail

LZWCodec

public LZWCodec()

Method Detail

encode

public void encode(@Nullable
                   byte[] aBuffer,
                   @Nonnegative
                   int nOfs,
                   @Nonnegative
                   int nLen,
                   @Nonnull @WillNotClose
                   OutputStream aOS)

Description copied from interface: IByteArrayStreamEncoder

Encode (part of) a byte array to an OutputStream.

Specified by:

encode in interface IByteArrayStreamEncoder

Parameters:

aBuffer - The byte array to be encoded. May be null.

nOfs - Offset into the byte array to start from.

nLen - Number of bytes starting from offset to consider.

aOS - The output stream to write to. May not be null and is NOT closed afterwards!

decode

public void decode(@Nonnull @WillNotClose
                   InputStream aEncodedIS,
                   @Nonnull @WillNotClose
                   OutputStream aOS)

decode

public void decode(@Nullable
                   byte[] aEncodedBuffer,
                   @Nonnegative
                   int nOfs,
                   @Nonnegative
                   int nLen,
                   @Nonnull @WillNotClose
                   OutputStream aOS)

Description copied from interface: IByteArrayStreamDecoder

Decode a byte array.

Specified by:

decode in interface IByteArrayStreamDecoder

Parameters:

aEncodedBuffer - The byte array to be decoded. May be null.

nOfs - Offset into the byte array to start from.

nLen - Number of bytes starting from offset to consider.

aOS - The output stream to write to. May not be null and is NOT closed afterwards!