com.pff

Class PSTNodeInputStream

java.lang.Object

java.io.InputStream

com.pff.PSTNodeInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class PSTNodeInputStream
extends java.io.InputStream

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

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor and 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 and Description
private void	detectZlib()
java.lang.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	readCompletely(byte[] target) Read a block from the input stream, ensuring buffer is completely filled.
void	reset()
void	seek(long location)
long	seekAndReadLong(long location, int bytes)

Methods inherited from class java.io.InputStream

available, close, mark, skip

Methods inherited from class java.lang.Object

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

Field Detail

in

private PSTFileContent in

pstFile

private PSTFile pstFile

skipPoints

private final java.util.LinkedList<java.lang.Long> skipPoints

indexItems

private final java.util.LinkedList<OffsetIndexItem> indexItems

currentBlock

private int currentBlock

currentLocation

private long currentLocation

allData

private byte[] allData

length

private long length

encrypted

private boolean encrypted

isZlib

private final boolean isZlib

See Also:

Constant Field Values

totalLoopCount

private int totalLoopCount

Constructor Detail

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
                   byte[] attachmentData)
            throws PSTException

Throws:

PSTException

PSTNodeInputStream

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

Throws:

PSTException

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
                   PSTDescriptorItem descriptorItem)
            throws java.io.IOException,
                   PSTException

Throws:

java.io.IOException

PSTException

PSTNodeInputStream

PSTNodeInputStream(PSTFile pstFile,
                   OffsetIndexItem offsetItem)
            throws java.io.IOException,
                   PSTException

Throws:

java.io.IOException

PSTException

Method Detail

detectZlib

private void detectZlib()
                 throws PSTException

Throws:

PSTException

loadFromOffsetItem

private void loadFromOffsetItem(OffsetIndexItem offsetItem)
                         throws java.io.IOException,
                                PSTException

Throws:

java.io.IOException

PSTException

isEncrypted

public boolean isEncrypted()

getBlockSkipPoints

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

Throws:

java.io.IOException

PSTException

length

public long length()

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

readCompletely

public void readCompletely(byte[] target)
                    throws java.io.IOException

Read a block from the input stream, ensuring buffer is completely filled. Recommended block size = 8176 (size used internally by PSTs)

Parameters:

target - buffer to fill

Throws:

java.io.IOException

read

public int read(byte[] output)
         throws java.io.IOException

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

Overrides:

read in class java.io.InputStream

Parameters:

output -

Returns:

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

reset

public void reset()

Overrides:

reset in class java.io.InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.InputStream

getBlockOffsets

public java.lang.Long[] getBlockOffsets()

Get the offsets (block positions) used in the array

Returns:

seek

public void seek(long location)
          throws java.io.IOException,
                 PSTException

Throws:

java.io.IOException

PSTException

seekAndReadLong

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

Throws:

java.io.IOException

PSTException

getPSTFile

public PSTFile getPSTFile()