Package org.apache.pdfbox.pdfparser

Class PDFXrefStreamParser

java.lang.Object

org.apache.pdfbox.pdfparser.BaseParser

org.apache.pdfbox.pdfparser.PDFXrefStreamParser

public class PDFXrefStreamParser
extends BaseParser

This will parse a PDF 1.5 (or better) Xref stream and extract the xref information from the stream.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	PDFXrefStreamParser.ObjectNumbers

Field Summary

Fields

Modifier and Type	Field	Description
private PDFXrefStreamParser.ObjectNumbers	objectNumbers
private final int[]	w

Fields inherited from class org.apache.pdfbox.pdfparser.BaseParser

A, ASCII_CR, ASCII_LF, B, D, DEF, document, E, ENDOBJ_STRING, ENDSTREAM_STRING, J, M, MAX_LENGTH_LONG, N, O, R, S, source, STREAM_STRING, T

Constructor Summary

Constructors

Constructor	Description
PDFXrefStreamParser(COSStream stream, COSDocument document)	Constructor.

Method Summary

Modifier and Type	Method	Description
private void	close()
private void	initParserValues(COSStream stream)
void	parse(XrefTrailerResolver resolver)	Parses through the unfiltered stream and populates the xrefTable HashMap.
private long	parseValue(byte[] data, int start, int length)
private void	readNextValue(byte[] value)

Methods inherited from class org.apache.pdfbox.pdfparser.BaseParser

getObjectKey, isClosing, isClosing, isDigit, isDigit, isEndOfName, isEOF, isEOL, isEOL, isSpace, isSpace, isWhitespace, isWhitespace, parseCOSArray, parseCOSDictionary, parseCOSName, parseCOSString, parseDirObject, readExpectedChar, readExpectedString, readGenerationNumber, readInt, readLine, readLong, readObjectNumber, readString, readString, readStringNumber, skipLinebreak, skipSpaces, skipWhiteSpaces

Methods inherited from class java.lang.Object

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

Field Details

w

private final int[] w

objectNumbers

private PDFXrefStreamParser.ObjectNumbers objectNumbers

Constructor Details

PDFXrefStreamParser

public PDFXrefStreamParser(COSStream stream,
 COSDocument document)
                    throws IOException

Constructor.

Parameters:

stream - The stream to parse.

document - The document for the current parsing.

Throws:

IOException - If there is an error initializing the stream.

Method Details

initParserValues

private void initParserValues(COSStream stream)
                       throws IOException

Throws:

IOException

close

private void close()
            throws IOException

Throws:

IOException

parse

public void parse(XrefTrailerResolver resolver)
           throws IOException

Parses through the unfiltered stream and populates the xrefTable HashMap.

Parameters:

resolver - resolver to read the xref/trailer information

Throws:

IOException - If there is an error while parsing the stream.

readNextValue

private void readNextValue(byte[] value)
                    throws IOException

Throws:

IOException

parseValue

private long parseValue(byte[] data,
 int start,
 int length)