Package com.pff

Class PSTNodeInputStream

java.lang.Object

java.io.InputStream

com.pff.PSTNodeInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class PSTNodeInputStream
extends InputStream

this input stream basically "maps" an input stream on top of the random access file

Field Summary

Fields

Modifier and Type	Field	Description
private byte[]	allData
private int	currentBlock
private long	currentLocation
private boolean	encrypted
private RandomAccessFile	in
private LinkedList<OffsetIndexItem>	indexItems
private long	length
private PSTFile	pstFile
private LinkedList<Long>	skipPoints
private int	totalLoopCount

Constructor Summary

Constructors

Constructor	Description
PSTNodeInputStream(PSTFile pstFile, byte[] attachmentData)
PSTNodeInputStream(PSTFile pstFile, byte[] attachmentData, boolean encrypted)
PSTNodeInputStream(PSTFile pstFile, OffsetIndexItem offsetItem)
PSTNodeInputStream(PSTFile pstFile, PSTDescriptorItem descriptorItem)

Method Summary

Modifier and Type	Method	Description
Long[]	getBlockOffsets()	Get the offsets (block positions) used in the array
private void	getBlockSkipPoints(byte[] data)
PSTFile	getPSTFile()
boolean	isEncrypted()
long	length()
private void	loadFromOffsetItem(OffsetIndexItem offsetItem)
boolean	markSupported()
int	read()
int	read(byte[] output)	Read a block from the input stream.
int	read(byte[] output, int offset, int length)
void	reset()
void	seek(long location)
long	seekAndReadLong(long location, int bytes)

Methods inherited from class java.io.InputStream

available, close, mark, nullInputStream, readAllBytes, readNBytes, readNBytes, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Details

in

private RandomAccessFile in

pstFile

private PSTFile pstFile

skipPoints

private LinkedList<Long> skipPoints

indexItems

private LinkedList<OffsetIndexItem> indexItems

currentBlock

private int currentBlock

currentLocation

private long currentLocation

allData

private byte[] allData

length

private long length

encrypted

private boolean encrypted

totalLoopCount

private int totalLoopCount

Constructor Details

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
 byte[] attachmentData)

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
 byte[] attachmentData,
 boolean encrypted)

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
 PSTDescriptorItem descriptorItem)
            throws IOException,
PSTException

Throws:

IOException

PSTException

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
 OffsetIndexItem offsetItem)
            throws IOException,
PSTException

Throws:

IOException

PSTException

Method Details

loadFromOffsetItem

private void loadFromOffsetItem(OffsetIndexItem offsetItem)
                         throws IOException,
PSTException

Throws:

IOException

PSTException

isEncrypted

public boolean isEncrypted()

getBlockSkipPoints

private void getBlockSkipPoints(byte[] data)
                         throws IOException,
PSTException

Throws:

IOException

PSTException

length

public long length()

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] output)
         throws IOException

Read a block from the input stream. Recommended block size = 8176 (size used internally by PSTs)

Overrides:

read in class InputStream

Parameters:

output -

Returns:

Throws:

IOException

read

public int read(byte[] output,
 int offset,
 int length)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

reset

public void reset()

Overrides:

reset in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

getBlockOffsets

public Long[] getBlockOffsets()

Get the offsets (block positions) used in the array

Returns:

seek

public void seek(long location)
          throws IOException,
PSTException

Throws:

IOException

PSTException

seekAndReadLong

public long seekAndReadLong(long location,
 int bytes)
                     throws IOException,
PSTException

Throws:

IOException

PSTException

getPSTFile

public PSTFile getPSTFile()