Module com.github.librepdf.openpdf

Package org.openpdf.text.pdf

Class LZWDecoder

java.lang.Object

org.openpdf.text.pdf.LZWDecoder

public class LZWDecoder
extends Object

A class for performing LZW decoding.

Constructor Summary

Constructors

Constructor	Description
LZWDecoder()

Method Summary

Modifier and Type	Method	Description
void	addStringToTable(byte[] string)	Add a new string to the string table.
void	addStringToTable(byte[] oldString, byte newString)	Add a new string to the string table.
byte[]	composeString(byte[] oldString, byte newString)	Append newString to the end of oldString.
void	decode(byte[] data, OutputStream uncompData)	Method to decode LZW compressed data.
int	getNextCode()
void	initializeStringTable()	Initialize the string table.
void	writeString(byte[] string)	Write out the string just uncompressed.

Methods inherited from class java.lang.Object

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

Constructor Details

LZWDecoder

public LZWDecoder()

Method Details

decode

public void decode(byte[] data,
 OutputStream uncompData)

Method to decode LZW compressed data.

Parameters:

data - The compressed data.

uncompData - Array to return the uncompressed data in.

initializeStringTable

public void initializeStringTable()

Initialize the string table.

writeString

public void writeString(byte[] string)

Write out the string just uncompressed.

Parameters:

string - bytes

addStringToTable

public void addStringToTable(byte[] oldString,
 byte newString)

Add a new string to the string table.

Parameters:

oldString - old string bytes

newString - new string bytes

addStringToTable

public void addStringToTable(byte[] string)

Add a new string to the string table.

Parameters:

string - bytes

composeString

public byte[] composeString(byte[] oldString,
 byte newString)

Append newString to the end of oldString.

Parameters:

oldString - old string bytes

newString - new string bytes

Returns:

byes

getNextCode

public int getNextCode()