org.icepdf.core.pobjects
Class CrossReference

java.lang.Object
  org.icepdf.core.pobjects.CrossReference

public class CrossReference
extends java.lang.Object

Since:

2.0

Author:

Mark Collette

Nested Class Summary

static class	CrossReference.CompressedEntry
static class	CrossReference.Entry
static class	CrossReference.FreeEntry
class	CrossReference.UsedEntry

Field Summary

static Name	INDEX_KEY
protected int	offset
static Name	SIZE_KEY
static Name	W_KEY

Constructor Summary

CrossReference()

Method Summary

protected void	addCompressedEntry(int objectNumber, int objectNumberOfContainingObjectStream, int indexWithinObjectStream)
protected void	addFreeEntry(int objectNumber, int nextFreeObjectNumber, int generationNumberIfReused)
void	addToEndOfChainOfPreviousXRefs(CrossReference prev)
protected void	addUsedEntry(int objectNumber, long filePositionOfObject, int generationNumber)
void	addXRefStreamEntries(Library library, java.util.HashMap xrefStreamHash, java.io.InputStream streamInput) Once a XRef stream is found, the decoded streamInput is itereated over to build out the Xref structure.
void	addXRefTableEntries(Parser parser) Starts the parsing of an xRef table entries as found when using the Parser to Parse out an object via Parser.getObject().
CrossReference.Entry	getEntryForObject(java.lang.Integer objectNumber)
void	setOffset(int offset)
void	setTrailer(PTrailer trailer)

Methods inherited from class java.lang.Object

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

Field Detail

SIZE_KEY

public static final Name SIZE_KEY

INDEX_KEY

public static final Name INDEX_KEY

W_KEY

public static final Name W_KEY

offset

protected int offset

Constructor Detail

CrossReference

public CrossReference()

Method Detail

setTrailer

public void setTrailer(PTrailer trailer)

addXRefTableEntries

public void addXRefTableEntries(Parser parser)

Starts the parsing of an xRef table entries as found when using the Parser to Parse out an object via Parser.getObject().

All entries are taken into consideration except for ones that are marked free.

Parameters:

parser - content parser

addXRefStreamEntries

public void addXRefStreamEntries(Library library,
                                 java.util.HashMap xrefStreamHash,
                                 java.io.InputStream streamInput)

Once a XRef stream is found, the decoded streamInput is itereated over to build out the Xref structure.

Parameters:

library - The Document's Library

xrefStreamHash - Dictionary for XRef stream

streamInput - Decoded stream bytes for XRef stream

getEntryForObject

public CrossReference.Entry getEntryForObject(java.lang.Integer objectNumber)

addToEndOfChainOfPreviousXRefs

public void addToEndOfChainOfPreviousXRefs(CrossReference prev)

addFreeEntry

protected void addFreeEntry(int objectNumber,
                            int nextFreeObjectNumber,
                            int generationNumberIfReused)

addUsedEntry

protected void addUsedEntry(int objectNumber,
                            long filePositionOfObject,
                            int generationNumber)

addCompressedEntry

protected void addCompressedEntry(int objectNumber,
                                  int objectNumberOfContainingObjectStream,
                                  int indexWithinObjectStream)

setOffset

public void setOffset(int offset)