org.jpedal.io

Class PdfFileReader

java.lang.Object

org.jpedal.io.PdfFileReader

public class PdfFileReader
extends Object

provides access to the file using Random access class to read bytes and strings from a pdf file. Pdf file is a mix of character and binary data streams

Field Summary

Fields

Modifier and Type	Field and Description
static int	alwaysCacheInMemory should never be final

Constructor Summary

Constructors

Constructor and Description
PdfFileReader()

Method Summary

Modifier and Type	Method and Description
void	dispose()
byte[]	getBuffer() return pdf data
byte[]	getBytes(long start, int count)
DecryptionFactory	getDecryptionObject()
byte[]	getEncHash()
PdfObject	getInfoObject()
long	getOffset(int currentID)
int	getPDFflag(Integer flag) give user access to internal flags such as user permissions
String	getType() get pdf type in file (found at start of file)
void	init(RandomAccessBuffer pdf_datafile)
boolean	isCompressed(int ref, int gen) general routine to turn reference into id with object name
void	movePointer(long pointer) returns current location pointer and sets to new value
void	readObject(PdfObject pdfObject) read an object in the pdf into a Object which can be an indirect or an object
byte[]	readObjectAsByteArray(PdfObject pdfObject, boolean isCompressed, int objectID, int gen) get object as byte[]
byte[]	readObjectData(PdfObject pdfObject) read an object in the pdf into a Object which can be an indirect or an object
byte[]	readPageIntoStream(PdfObject pdfObject) get postscript data (which may be split across several objects)
PdfObject	readReferenceTable(PdfObject linearObj, PdfFileReader pdfFileReader) read reference table start to see if new 1.5 type or traditional xref
byte[]	readStream(PdfObject pdfObject, boolean cacheValue, boolean decompress, boolean keepRaw, boolean isMetaData, boolean isCompressedStream, String cacheName) read a stream
void	setCacheSize(int miniumumCacheSize) set size over which objects kept on disk
void	setCertificate(Certificate certificate, PrivateKey key)
void	setPassword(String password)
void	setupDecryption(PdfObject encryptObj, PdfFileReader pdfFileReader)
void	spoolStreamDataToDisk(File tmpFile, long start)
void	spoolStreamDataToDisk(File tmpFile, long start, int size)
void	storeLinearizedTables(LinearizedHintTable linHintTable)

Methods inherited from class java.lang.Object

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

Field Detail

alwaysCacheInMemory

public static int alwaysCacheInMemory

should never be final

Constructor Detail

PdfFileReader

public PdfFileReader()

Method Detail

getInfoObject

public PdfObject getInfoObject()

setCacheSize

public void setCacheSize(int miniumumCacheSize)

set size over which objects kept on disk

getBuffer

public byte[] getBuffer()

return pdf data

init

public void init(RandomAccessBuffer pdf_datafile)

readObject

public final void readObject(PdfObject pdfObject)

read an object in the pdf into a Object which can be an indirect or an object

readStream

public final byte[] readStream(PdfObject pdfObject,
                               boolean cacheValue,
                               boolean decompress,
                               boolean keepRaw,
                               boolean isMetaData,
                               boolean isCompressedStream,
                               String cacheName)

read a stream

getPDFflag

public int getPDFflag(Integer flag)

give user access to internal flags such as user permissions

spoolStreamDataToDisk

public void spoolStreamDataToDisk(File tmpFile,
                                  long start,
                                  int size)
                           throws Exception

Throws:

Exception

spoolStreamDataToDisk

public void spoolStreamDataToDisk(File tmpFile,
                                  long start)
                           throws Exception

Throws:

Exception

getOffset

public long getOffset(int currentID)

getBytes

public byte[] getBytes(long start,
                       int count)

storeLinearizedTables

public void storeLinearizedTables(LinearizedHintTable linHintTable)

dispose

public void dispose()

getType

public final String getType()

get pdf type in file (found at start of file)

movePointer

public void movePointer(long pointer)

returns current location pointer and sets to new value

isCompressed

public final boolean isCompressed(int ref,
                                  int gen)

general routine to turn reference into id with object name

getDecryptionObject

public DecryptionFactory getDecryptionObject()

setPassword

public void setPassword(String password)

readObjectData

public byte[] readObjectData(PdfObject pdfObject)

read an object in the pdf into a Object which can be an indirect or an object

readObjectAsByteArray

public byte[] readObjectAsByteArray(PdfObject pdfObject,
                                    boolean isCompressed,
                                    int objectID,
                                    int gen)

get object as byte[]

Parameters:

isCompressed -

objectID -

gen -

Returns:

readPageIntoStream

public byte[] readPageIntoStream(PdfObject pdfObject)

get postscript data (which may be split across several objects)

setCertificate

public void setCertificate(Certificate certificate,
                           PrivateKey key)

readReferenceTable

public final PdfObject readReferenceTable(PdfObject linearObj,
                                          PdfFileReader pdfFileReader)
                                   throws PdfException

read reference table start to see if new 1.5 type or traditional xref

Throws:

PdfException

setupDecryption

public void setupDecryption(PdfObject encryptObj,
                            PdfFileReader pdfFileReader)
                     throws PdfSecurityException

Throws:

PdfSecurityException

getEncHash

public byte[] getEncHash()