Package org.apache.pdfbox.pdfparser

Class PDFObjectStreamParser

java.lang.Object

org.apache.pdfbox.pdfparser.BaseParser

org.apache.pdfbox.pdfparser.PDFObjectStreamParser

public class PDFObjectStreamParser
extends BaseParser

This will parse a PDF 1.5 object stream and extract the object with given object number from the stream.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	firstObject
private final int	numberOfObjects

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
PDFObjectStreamParser(COSStream stream, COSDocument document)	Constructor.

Method Summary

Modifier and Type	Method	Description
Map<COSObjectKey,COSBase>	parseAllObjects()	Parse all compressed objects.
COSBase	parseObject(long objectNumber)	Search for/parse the object with the given object number.
private Map<Long,Integer>	privateReadObjectNumbers()
private Map<Integer,Long>	privateReadObjectOffsets()
Map<Long,Integer>	readObjectNumbers()	Read all object numbers from the compressed object stream.

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

numberOfObjects

private final int numberOfObjects

firstObject

private final int firstObject

Constructor Details

PDFObjectStreamParser

public PDFObjectStreamParser(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

parseObject

public COSBase parseObject(long objectNumber)
                    throws IOException

Search for/parse the object with the given object number. The stream is closed after parsing the object with the given number.

Parameters:

objectNumber - the number of the object to b e parsed

Returns:

the parsed object or null if the object with the given number can't be found

Throws:

IOException - if there is an error while parsing the stream

parseAllObjects

public Map<COSObjectKey,COSBase> parseAllObjects()
                                          throws IOException

Parse all compressed objects. The stream is closed after parsing.

Returns:

a map containing all parsed objects using the object number as key

Throws:

IOException - if there is an error while parsing the stream

privateReadObjectNumbers

private Map<Long,Integer> privateReadObjectNumbers()
                                            throws IOException

Throws:

IOException

privateReadObjectOffsets

private Map<Integer,Long> privateReadObjectOffsets()
                                            throws IOException

Throws:

IOException

readObjectNumbers

public Map<Long,Integer> readObjectNumbers()
                                    throws IOException

Read all object numbers from the compressed object stream. The stream is closed after reading the object numbers.

Returns:

a map off all object numbers and the corresponding offset within the object stream.

Throws:

IOException - if there is an error while parsing the stream