Module org.sejda.sambox

Package org.sejda.sambox.input

Class XrefFullScanner

java.lang.Object

org.sejda.sambox.input.XrefFullScanner

class XrefFullScanner
extends Object

Component scanning for xref tables/streams. It scans top to bottom parsing any xref table/stream found with the assumption that xrefs found later in the file are more recent.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	XrefFullScanner.XrefScanOutcome	possible outcome of the xref full scan

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.slf4j.Logger	LOG
private Pattern	objectDefPatter
private XrefFullScanner.XrefScanOutcome	outcome
private COSParser	parser
private FileTrailer	trailer
private AbstractXrefStreamParser	xrefStreamParser
private AbstractXrefTableParser	xrefTableParser

Constructor Summary

Constructors

Constructor	Description
XrefFullScanner(COSParser parser)

Method Summary

Modifier and Type	Method	Description
private void	addEntryIfValid(XrefEntry entry)
private void	doScan()
private boolean	isValidEntry(XrefEntry entry)
private void	parseFoundObject(long offset)
private void	parseFoundXrefStream(COSDictionary trailer)
private void	parseFoundXrefTable(long offset)
(package private) XrefFullScanner.XrefScanOutcome	scan()
(package private) FileTrailer	trailer()

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

trailer

private FileTrailer trailer

xrefStreamParser

private AbstractXrefStreamParser xrefStreamParser

xrefTableParser

private AbstractXrefTableParser xrefTableParser

parser

private COSParser parser

objectDefPatter

private Pattern objectDefPatter

outcome

private XrefFullScanner.XrefScanOutcome outcome

Constructor Details

XrefFullScanner

XrefFullScanner(COSParser parser)

Method Details

addEntryIfValid

private void addEntryIfValid(XrefEntry entry)

scan

XrefFullScanner.XrefScanOutcome scan()

Returns:

the state of the scan

doScan

private void doScan()
             throws IOException

Throws:

IOException

parseFoundXrefTable

private void parseFoundXrefTable(long offset)
                          throws IOException

Throws:

IOException

trailer

FileTrailer trailer()

parseFoundObject

private void parseFoundObject(long offset)
                       throws IOException

Throws:

IOException

parseFoundXrefStream

private void parseFoundXrefStream(COSDictionary trailer)
                           throws IOException

Throws:

IOException

isValidEntry

private boolean isValidEntry(XrefEntry entry)

Parameters:

entry -

Returns:

true if the given xref entry actually points to a valid object definition